Bearing bush installation state measuring device

Abstract

The invention relates to the field of bearing bush installation alignment, and provides a bearing bush installation state measuring device, which comprises a connecting ring and a measuring structure, and is characterized in that the connecting ring is used for sleeving the periphery of a large shaft; the multiple measuring structures comprise mounting bases and distance measuring sensors, the mounting bases are mounted on the connecting ring and arranged at intervals, the distance measuring sensors are mounted on the mounting bases and used for measuring the distance from the end face of the bearing bush to the mounting bases, the distance measuring sensors are located on the same normal plane, and the normal plane is perpendicular to the central axis of the large shaft. According to the bearing bush installation state measuring device, the installation state of the bearing bush relative to a large shaft can be timely and accurately measured in a time-saving and labor-saving manner through a simple, simplified and optimized measuring process, and the measuring precision can be remarkably improved; therefore, the mounting state of the bearing bush can be conveniently adjusted according to the measurement result of the bearing bush mounting state measurement device until the mounting alignment of the bearing bush is realized, and the effect and efficiency of the mounting alignment of the bearing bush can be optimized.

Description

Technical Field

[0001] This application belongs to the technical field of alignment of bearing bushes during installation, and particularly relates to a measuring device for the installation state of bearing bushes. Background Art

[0002] In large steam turbine generator sets, the bearing bushes are installed inside the bearing housings, and the large shaft passes through the bearing bushes to be supported by the bearing bushes. The large shaft is a high-speed rotating component, and the bearing bushes and the bearing housings are stationary components. Due to the large geometric dimensions of the bearing bushes in large steam turbine generator sets, it is easy for the bearing bushes and the large shaft to have contact skew and uneven contact after installation and fitting, resulting in a decrease in the bearing capacity, excessive local temperature, and even damage of the bearing bushes due to eccentric loading. Therefore, it is necessary to measure the installation state of the bearing bushes and manually adjust the installation state of the bearing bushes according to the measurement results until the alignment of the bearing bushes during installation is achieved.

[0003] Currently, the commonly used measurement methods for the installation state of bearing bushes are as follows: First, taking the horizontal mid-plane of the bearing housing as a reference object, measuring the height differences between the four corners of the horizontal mid-plane of the lower half bearing bush and the reference object; Second, measuring the clearances between the four corners of the horizontal mid-plane of the lower half bearing bush and the large shaft; Third, measuring the relative axial height difference between the lower half bearing bush and the lower bearing pillow of the bearing housing. By comparing the data measured for the bearing bush to be measured through the above measurement methods with the historical reference data previously retained for the reference bearing bush through the same measurement methods, it is possible to determine whether there is a skew situation of the bearing bush to be measured relative to the large shaft (that is, to obtain the installation state of the bearing bush to be measured).

[0004] However, the measurement process of the above measurement methods is cumbersome, time-consuming and laborious, and the measurement accuracy is relatively low. It is difficult to monitor and measure the installation state of the bearing bushes in real time, which affects the effect and efficiency of the alignment of the bearing bushes during installation. Summary of the Invention

[0005] An embodiment of this application provides a measuring device for the installation state of a bearing bush, aiming to solve the problems that the measurement process of the existing measurement methods is cumbersome, time-consuming and laborious, the measurement accuracy is relatively low, it is difficult to monitor and measure the installation state of the bearing bush in real time, and it affects the effect and efficiency of the alignment of the bearing bush during installation.

[0006] To achieve the above object, the technical solution adopted in the embodiment of this application is as follows:

[0007] In a first aspect, a measuring device for the installation state of a bearing bush is provided for measuring the installation state of the bearing bush relative to a large shaft. The bearing bush is sleeved on the outer periphery of the large shaft. The measuring device for the installation state of the bearing bush includes:

[0008] A connecting ring for sleeving on the outer periphery of the large shaft;

[0009] There are multiple measuring structures, each of which includes a mounting base and a distance measuring sensor. Each of the mounting bases is mounted on the connecting ring and is arranged at intervals. The distance measuring sensor is mounted on the mounting base and is used to measure the distance from the end face of the bearing bush to it. Each of the distance measuring sensors is in the same normal plane, and the normal plane is perpendicular to the central axis of the large shaft.

[0010] In some embodiments, along the axial and radial directions of the connecting ring, the position of the distance measuring sensor relative to the mounting base is adjustable;

[0011] The measuring structure includes a locking member, which is mounted on the mounting base and is used to lock the position of the distance measuring sensor relative to the mounting base.

[0012] In some embodiments, the measuring structure includes four bearings distributed in a matrix. The bearings are mounted on the mounting base and can rotate circumferentially around their own central axes. The central axes of the bearings are parallel to the central axis of the large shaft, and the bearings are used to abut against the outer peripheral surface of the large shaft.

[0013] In some embodiments, there are four measuring structures, two of which are arranged opposite to each other in the horizontal direction, and the other two measuring structures are arranged opposite to each other in the vertical direction.

[0014] In some embodiments, the connecting ring is passed through the mounting base, and the measuring structure includes a pin shaft, which passes through and connects the mounting base and the connecting ring.

[0015] In some embodiments, the connecting ring has a first end and a second end connected to each other, and the connection point of the second end to the first end is adjustable so that the radial dimension of the connecting ring is adjustable.

[0016] In some embodiments, one of the mounting bases is the first mounting base, the first end is fixed to the first mounting base, the second end is passed through and connected to the first mounting base, and the connection point of the second end to the first mounting base is adjustable.

[0017] In some embodiments, the second end is detachably connected to the first mounting base.

[0018] In some embodiments, the bearing bush installation state measuring device includes a calibration member, which includes a calibration shaft and a calibration shaft shoulder. The radial dimension of the calibration shaft is the same as that of the large shaft. The calibration shaft shoulder protrudes from the calibration shaft along the circumferential direction of the calibration shaft, and the end face of the calibration shaft shoulder facing the calibration shaft is the calibration surface;

[0019] The calibration piece is used for the connecting ring to be sleeved on the outer periphery of the calibration shaft, so that each of the measuring structures can measure the initial deviation.

[0020] In some embodiments, the distance measuring sensor is a laser distance measuring sensor;

[0021] And / or, the measuring structure includes a power supply, the power supply is installed on the installation base and is electrically connected to the distance measuring sensor;

[0022] And / or, the bearing bush installation state measuring device includes an arithmetic unit and a display screen, the arithmetic unit is signal-connected to each of the distance measuring sensors, and the display screen is signal-connected to the arithmetic unit.

[0023] The beneficial effects of the bearing bush installation state measuring device provided by this application are as follows:

[0024] During the measurement operation of the bearing bush installation state measuring device provided by the embodiment of this application for measuring the installation state of the bearing bush relative to the large shaft, by sleeving the connecting ring on the outer periphery of the large shaft, the installation states of the connecting ring and each measuring structure installed on the connecting ring relative to the large shaft can be stabilized, so that each measuring structure can perform the measurement operation stably and reliably; also, by making the distance measuring sensors of each measuring structure be in the same normal plane perpendicular to the central axis of the large shaft, each distance measuring sensor can uniformly use the large shaft itself and this normal plane as the measurement reference, and by measuring the distance from the end face of the bearing bush to this normal plane, it can be determined in real time and accurately whether there is an installation skew of the bearing bush relative to the large shaft. Based on this, the bearing bush installation state measuring device can measure the installation state of the bearing bush relative to the large shaft in a simple, simplified and optimized measurement process, saving time, effort, timely, real-time and accurately, especially meeting the need for continuous monitoring of the adjustment results during the adjustment process of bearing bush installation alignment; moreover, based on the relationship between the bearing bush and the large shaft, the large shaft itself can be directly used as the measurement reference, reducing or even basically eliminating the measurement errors and inaccuracies caused by relying on external reference objects for measurement, promoting the comparability of data by enabling each distance measuring sensor to have a unified reference normal plane, directly and accurately quantifying the skew degree and skew direction of the bearing bush, and significantly improving the measurement accuracy; thus, it is convenient to adjust the installation state of the bearing bush according to the measurement results of the bearing bush installation state measuring device until the installation alignment of the bearing bush is achieved, which is beneficial to optimizing the effect and efficiency of bearing bush installation alignment. Description of the Drawings

[0025] In order to clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required to be used in the embodiments of this application or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 The three-dimensional assembly of the bearing bush installation state measuring device, the large shaft, and the bearing bush provided for some embodiments of the present application Figure 1 ;

[0027] Figure 2 For Figure 1 The side view of the assembly of the bearing bush installation state measuring device, the large shaft, and the bearing bush provided;

[0028] Figure 3 For Figure 1 The three-dimensional assembly of the bearing bush installation state measuring device, the large shaft, and the bearing bush provided Figure 2 ;

[0029] Figure 4 The front view of the assembly of the bearing bush installation state measuring device and the large shaft provided for some embodiments of the present application;

[0030] Figure 5 The side view of the bearing bush installation state measuring device provided for some embodiments of the present application, wherein the connecting ring is sleeved on the outer periphery of the calibration shaft;

[0031] Figure 6 The connection schematic diagram of the partial structure of the bearing bush installation state measuring device provided for some embodiments of the present application, wherein the power supply is electrically connected to the distance measuring sensor, the arithmetic unit is signal-connected to each distance measuring sensor, and the display screen is signal-connected to the arithmetic unit.

[0032] Among them, the reference numerals in the figure:

[0033] 100 - bearing bush, 200 - large shaft, L1 - central axis of the large shaft, 10 - connecting ring, 11 - first end, 12 - second end, 20 - measuring structure, 21 - mounting base, 21a - first mounting base, 22 - distance measuring sensor, 23 - locking member, 24 - bearing, 25 - pin shaft, 26 - normal plane, 27 - power supply, 30 - calibration member, 31 - calibration shaft, 32 - calibration shaft shoulder, 321 - calibration surface, 40 - arithmetic unit, 50 - display screen, L2 - central axis of the bearing, x - horizontal direction, y - vertical direction. Detailed implementation manners

[0034] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present application clear and understandable, the present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Without special instructions, all implementation manners and optional implementation manners of the present application can be combined with each other to form a new technical solution. Without special instructions, all technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0037] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0038] In the present application, the "central axis" refers to the line passing through the geometric midline of the corresponding structure.

[0039] In the present application, the "axial direction" refers to the extending direction of the central axis of the corresponding structure, the "radial direction" refers to any direction passing through the central axis and perpendicular to the central axis of the corresponding structure, and the "circumferential direction" refers to the surrounding direction of the outer peripheral surface of the corresponding structure.

[0040] In a large steam turbine generator set, the bearing bush is installed inside the bearing housing, and the large shaft passes through the bearing bush to be supported by the bearing bush. The large shaft is a high-speed rotating component, and the bearing bush and the bearing housing are stationary components.

[0041] Four spherical shims are installed on the outer periphery of the bearing bush, and the bearing housing is provided with concave spherical surfaces in the areas corresponding to the spherical shims. In theory, the four spherical shims are adaptively matched with the four concave spherical surfaces one by one, which should prompt the bearing bush and the bearing housing to be in a good contact state. Thus, after the bearing bush and the large shaft are installed and matched, and during the subsequent use process, it can prompt the central axis of the bearing bush to coincide with the central axis of the large shaft (i.e., achieve self-aligning), and prompt the inner hole surface of the bearing bush to be in uniform contact with the outer peripheral surface of the large shaft without any eccentric loading phenomenon.

[0042] However, due to the large geometric size of the bearing bush of large steam turbine generator sets (the diameter usually exceeds 1m), in fact, the spherical shim and the concave spherical surface are matched, but it cannot promote the self-aligning of the bearing bush and the large shaft after installation and fitting. There will be uneven contact between the inner hole surface of the bearing bush and the outer peripheral surface of the large shaft. In some cases, there is an angle between the central axis of the bearing bush and the central axis of the large shaft in the horizontal direction, resulting in left-right contact skew between the bearing bush and the large shaft. In some cases, there is an angle between the central axis of the bearing bush and the central axis of the large shaft in the vertical direction, resulting in up-down contact skew between the bearing bush and the large shaft. In this way, the bearing bush is prone to a decrease in load-bearing capacity, local overheating, and even damage due to eccentric loading.

[0043] Therefore, it is necessary to measure the installation state of the bearing bush and adjust the installation state of the bearing bush manually according to the measurement results until the installation alignment of the bearing bush is achieved, so as to promote the self-aligning of the bearing bush and the large shaft after installation and fitting, and to ensure that the inner hole surface of the bearing bush and the outer peripheral surface of the large shaft can be in uniform contact without eccentric loading.

[0044] At present, the commonly used measurement methods for the installation state of the bearing bush are as follows:

[0045] First, taking the horizontal mid-plane of the bearing housing as a reference object, measure the height differences between the four corners of the horizontal mid-plane of the lower half of the bearing bush (the lower part of the bearing bush) and the reference object.

[0046] Second, measure the clearances (also called side clearances) between the four corners of the horizontal mid-plane of the lower half of the bearing bush and the large shaft.

[0047] Third, measure the relative axial height difference between the lower half of the bearing bush and the lower bearing pad (also called the lower bearing pad block) of the bearing housing.

[0048] Compare the data measured for the bearing bush to be measured through the above measurement methods with the historical reference data previously retained by the reference bearing bush (which is known to be in uniform contact with the large shaft and without eccentric loading) through the same measurement methods, and it can be judged whether there is a skew situation of the bearing bush to be measured relative to the large shaft (that is, the installation state of the bearing bush to be measured is obtained). For example, compare the data measured for the bearing bush to be measured through the first measurement method with the historical reference data obtained and retained by the reference bearing bush through the first measurement method during disassembly. If there is a difference, it can be judged that the bearing bush to be measured has a skew situation. If there is no difference, it can be judged that the bearing bush to be measured has no skew situation. In the case of judging that there is a skew situation of the bearing bush to be measured relative to the large shaft, the installation state of the bearing bush to be measured can be adjusted until there is no difference between "the data measured for the bearing bush to be measured through the above measurement methods" and "the historical reference data previously retained by the reference bearing bush through the same measurement methods", and it can be defaulted that the installation alignment of the bearing bush to be measured is achieved.

[0049] However, the measurement process of the above measurement means is cumbersome, time-consuming and laborious, with low measurement accuracy, and it is difficult to monitor and measure the installation state of the bearing bush in real time, which affects the effect and efficiency of the alignment of the bearing bush installation.

[0050] The embodiments provided in this application will solve the above problems.

[0051] In order to illustrate the technical solutions provided in this application, the following will be described in detail with reference to specific drawings and embodiments.

[0052] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 Some embodiments of this application provide a bearing bush installation state measuring device for measuring the installation state of the bearing bush 100 relative to the large shaft 200, and the bearing bush 100 is sleeved on the outer periphery of the large shaft 200. The bearing bush installation state measuring device includes a connecting ring 10 and a measuring structure 20. The connecting ring 10 is used to be sleeved on the outer periphery of the large shaft 200; there are multiple measuring structures 20. The measuring structure 20 includes an installation base 21 and a distance measuring sensor 22. Each installation base 21 is installed on the connecting ring 10 and is arranged at intervals from each other. The distance measuring sensor 22 is installed on the installation base 21 and is used to measure the distance from the end face of the bearing bush 100 to it. Each distance measuring sensor 22 is in the same normal plane 26, and the normal plane 26 is perpendicular to the central axis L1 of the large shaft 200.

[0053] It should be noted that the bearing bush installation state measuring device is used to measure the installation state of the bearing bush 100 relative to the large shaft 200 to determine whether there is a skew situation of the bearing bush 100 relative to the large shaft 200. Among them, the bearing bush 100 is sleeved on the outer periphery of the large shaft 200, that is, the large shaft 200 passes through the bearing bush 100, and the bearing bush 100 can support the large shaft 200.

[0054] It should also be noted that the bearing bush installation state measuring device includes a connecting ring 10 and multiple measuring structures 20.

[0055] The connecting ring 10 is a truss structure for connecting and supporting each measuring structure 20. The connecting ring 10 has an annular working form, so that the connecting ring 10 can be sleeved on the outer periphery of the large shaft 200 during the measurement operation to stabilize the installation state of the connecting ring 10 and each measuring structure 20 relative to the large shaft 200, so as to facilitate each measuring structure 20 to perform the measurement operation stably and reliably. Among them, in some embodiments, the connecting ring 10 can be a rigid member, so that the connecting ring 10 stably maintains the annular working form. In other embodiments, the connecting ring 10 can be a flexible member, so that the connecting ring 10 can be transformed from a straight strip unfolded form to an annular working form. Among them, the material of the connecting ring 10 can be flexibly set. For example, the connecting ring 10 can be made of but not limited to aluminum alloy material.

[0056] The measuring structure 20 includes a mounting base 21. The mounting bases 21 of the respective measuring structures 20 are all mounted and fixed on the connecting ring 10 to stably install the mounting position and mounting state of the mounting base 21 relative to the connecting ring 10, and to restrict the movement of the mounting base 21 relative to the connecting ring 10 (such as circumferential movement, axial movement, radial movement). Among them, a fixed connection method or a detachable connection method can be adopted between the mounting base 21 and the connecting ring 10, and the specific connection method adopted is not limited for the time being. The mounting bases 21 of the respective measuring structures 20 are arranged at intervals along the circumference of the connecting ring 10. Among them, the respective mounting bases 21 can be arranged in an equiangular circle around the central axis of the connecting ring 10, or can be arranged in a non-equiangular circle. Among them, the material of the mounting base 21 can be flexibly set. For example, the mounting base 21 can be made of, but not limited to, aluminum alloy material.

[0057] The distance measuring sensor 22 is installed on one side of the mounting base 21 along the axis of the connecting ring 10. In the case where the connecting ring 10 is sleeved on the outer circumference of the large shaft 200, the distance measuring sensor 22 can be arranged facing the bearing bush 100 to measure the distance between the end face of the bearing bush 100 perpendicular to the central axis of the bearing bush 100 and the distance measuring sensor 22. Among them, the type of the distance measuring sensor 22 can be set as required. Exemplarily, the distance measuring sensor 22 can be an optical distance measuring sensor (such as a laser distance measuring sensor, an infrared distance measuring sensor, an ultrasonic distance measuring sensor, etc.), an electromagnetic distance measuring sensor (such as a microwave radar, a capacitance / inductance type proximity sensor, etc.), a mechanical contact type distance measurement, etc.

[0058] In the case where the connecting ring 10 is sleeved on the outer circumference of the large shaft 200, during the measurement operation, the respective distance measuring sensors 22 are in the same normal plane 26 perpendicular to the central axis L1 of the large shaft 200. Based on this, the respective distance measuring sensors 22 can use the large shaft 200 itself and the normal plane 26 as the measurement reference, and by measuring the distance from the end face of the bearing bush 100 to the normal plane 26, to obtain whether there is an installation skew of the bearing bush 100 relative to the large shaft 200, that is, to obtain the installation state of the bearing bush 100 relative to the large shaft 200. Specifically, if the distances measured by the respective distance measuring sensors 22 are the same, it can be obtained that there is no installation skew of the bearing bush 100 relative to the large shaft 200; on the contrary, if the distances measured by the respective distance measuring sensors 22 are different, it can be obtained that there is an installation skew of the bearing bush 100 relative to the large shaft 200, and the installation state of the bearing bush 100 needs to be adjusted until the distances measured by the respective distance measuring sensors 22 are the same, so as to realize the installation alignment of the bearing bush 100, promote the self-aligning of the bearing bush 100 and the large shaft 200 after installation and cooperation, and promote the uniform contact between the inner hole surface of the bearing bush 100 and the outer circumferential surface of the large shaft 200 without uneven load phenomenon, and reduce the risk of the bearing bush 100 having problems such as reduced load-bearing capacity, local overheating, and damage due to uneven load.

[0059] In summary, during the measurement operation of the bearing bush installation state measuring device provided by the embodiments of the present application for measuring the installation state of the bearing bush 100 relative to the large shaft 200, the connecting ring 10 can be sleeved on the outer periphery of the large shaft 200 to stabilize the installation state of the connecting ring 10 and each measuring structure 20 installed on the connecting ring 10 relative to the large shaft 200, facilitating the stable and reliable measurement operation of each measuring structure 20; also, by making the distance measuring sensors 22 of each measuring structure 20 be in the same normal plane 26 perpendicular to the central axis of the large shaft 200, each distance measuring sensor 22 can uniformly use the large shaft 200 itself and the normal plane 26 as the measurement reference, and by measuring the distance from the end face of the bearing bush 100 to the normal plane 26, it can be determined in real time and accurately whether there is an installation skew of the bearing bush 100 relative to the large shaft 200. Based on this, the bearing bush installation state measuring device can measure the installation state of the bearing bush 100 relative to the large shaft 200 in a simple, simplified, and optimized measurement process, saving time, effort, timely, real-time, and accurately, especially meeting the need for continuous monitoring of the adjustment results during the adjustment process of aligning the installation of the bearing bush 100; moreover, based on the relationship between the bearing bush 100 and the large shaft 200, the large shaft 200 itself can be directly used as the measurement reference, reducing or even basically eliminating the measurement errors and inaccuracies caused by relying on external reference objects for measurement, enabling each distance measuring sensor 22 to have a unified reference normal plane 26 to improve data comparability, directly and accurately quantifying the skew degree and skew direction of the bearing bush 100, and significantly improving the measurement accuracy; thus, it is convenient to adjust the installation state of the bearing bush 100 according to the measurement results of the bearing bush installation state measuring device until the installation alignment of the bearing bush 100 is achieved, which is beneficial to optimizing the effect and efficiency of aligning the installation of the bearing bush 100.

[0060] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, along the axial and radial directions of the connecting ring 10, the position of the distance measuring sensor 22 relative to the mounting base 21 is adjustable; the measuring structure 20 includes a locking member 23, and the locking member 23 is installed on the mounting base 21 and is used to lock the position of the distance measuring sensor 22 relative to the mounting base 21.

[0061] It should be noted that on the basis that the distance measuring sensor 22 is installed on one side of the mounting base 21 along the axial direction of the connecting ring 10, relative to the mounting base 21, the position of the distance measuring sensor 22 along the axial direction of the connecting ring 10 is adjustable, and the position of the distance measuring sensor 22 along the radial direction of the connecting ring 10 is also adjustable. By adjusting the positions of the respective distance measuring sensors 22 relative to the mounting base 21 as required, it is convenient to accurately calibrate each distance measuring sensor 22 to be in the same normal plane 26.

[0062] After the adjustment of each distance measuring sensor 22 is completed, the position of the distance measuring sensor 22 relative to the mounting base 21 can be locked by the locking member 23 mounted on the mounting base 21, so as to limit the continuous adjustment of the position of the distance measuring sensor 22 relative to the mounting base 21, thereby stably and reliably stabilizing the position of the distance measuring sensor 22 relative to the mounting base 21, and facilitating the distance measuring sensor 22 to perform measurement operations stably and reliably.

[0063] Among them, a typical mechanical implementation scheme can be adopted to achieve the position adjustment and position locking of the distance measuring sensor 22. Exemplarily, in a specific implementation example, a setscrew can be used to press against the distance measuring sensor 22 to cause a slight movement of the distance measuring sensor 22, thereby realizing the adjustment of the position of the distance measuring sensor 22 relative to the mounting base 21; a locking screw can be used as the locking member 23 to tightly lock the distance measuring sensor 22, thereby realizing the locking of the position of the distance measuring sensor 22 relative to the mounting base 21. Exemplarily, in another specific implementation example, a T-shaped chute is machined on the mounting base 21, and the distance measuring sensor 22 is slidably mounted in the chute. The position of the distance measuring sensor 22 along the radial direction of the connecting ring 10 can be adjusted by using spring preloading and locking screws, and the position of the distance measuring sensor 22 along the axial direction of the connecting ring 10 can be adjusted by using a fine adjustment nut connected to the tail of the distance measuring sensor 22. Among them, both the locking screw and the fine adjustment nut have both adjustment and locking functions. Therefore, both the locking screw and the fine adjustment nut can be used as the locking member 23, or a stop screw can be additionally provided as the locking member 23 to provide an additional locking point.

[0064] By adopting the above scheme, it is convenient to adjust the positions of the respective distance measuring sensors 22 relative to the mounting base 21 as required, so as to accurately calibrate the respective distance measuring sensors 22 to be on the same normal plane 26, thereby reducing or even basically eliminating the measurement reference deviation caused by installation tolerances and machining errors, and thus improving the reference unity and data comparability of the respective distance measuring sensors 22. It is also convenient to lock the position of the distance measuring sensor 22 relative to the mounting base 21 by the locking member 23 to limit the continuous adjustment of the position of the distance measuring sensor 22 relative to the mounting base 21, and to stabilize the position of the distance measuring sensor 22 relative to the mounting base 21, thereby facilitating the distance measuring sensor 22 to perform measurement operations stably and reliably at a precise and stable position and state, and improving the measurement stability, data reliability, and data validity of the respective distance measuring sensors 22. Thereby, the measurement accuracy of the bearing bush installation state measuring device can be improved.

[0065] Please refer to Figure 1 、 Figure 3 、 Figure 4, in some embodiments of the present application, the measurement structure 20 includes four bearings 24 distributed in a matrix. The bearings 24 are mounted on the mounting base 21 and can rotate circumferentially around their own central axes. The central axis L2 of the bearing 24 is parallel to the central axis L1 of the large shaft 200, and the bearing 24 is used to abut against the outer peripheral surface of the large shaft 200.

[0066] It should be noted that in the measurement structure 20, the four bearings 24 are distributed in a matrix (i.e., in a rectangular or square distribution), and are all mounted on the side of the mounting base 21 facing the central axis of the connecting ring 10. The bearing 24 can rotate circumferentially around its own central axis parallel to the central axis of the large shaft 200, and the rotation direction of the bearing 24 is restricted (such as left turn, right turn, etc.). In the case where the connecting ring 10 is sleeved on the outer periphery of the large shaft 200, the measurement structure 20 can adaptively and conformally abut against the outer peripheral surface of the large shaft 200 via the four bearings 24. Among them, the bearing 24 can be a precision bearing 24.

[0067] By adopting the above solution, in the case where the connecting ring 10 is sleeved on the outer periphery of the large shaft 200, the measurement structure 20 can adaptively and conformally abut against the outer peripheral surface of the large shaft 200 through the four bearings 24 that are all mounted on the mounting base 21 and can rotate circumferentially around their own central axes parallel to the central axis of the large shaft 200 and are distributed in a matrix. Based on this, the contact points of the four bearings 24 can form a virtual cylindrical surface coaxial with the large shaft 200, enabling the connecting ring 10 and each measurement structure 20 to self-align relative to the large shaft 200 by utilizing the geometric coaxiality of multi-point contact, enabling the central axis of the connecting ring 10 to automatically be parallel and aligned with the central axis L1 of the large shaft 200, thereby reducing the eccentric error introduced due to the skew of the central axis of the connecting ring 10 and the central axis L1 of the large shaft 200, improving the stability, reliability, and effectiveness of the measurement reference (i.e., the normal plane 26), reducing the measurement reference offset caused by the tilt of the connecting ring 10, and reducing the measurement deviation introduced due to the measurement reference offset, thereby improving the measurement accuracy of the bearing installation state measuring device. Moreover, the measurement structure 20 can adaptively abut against the outer peripheral surfaces of large shafts 200 with different radial dimensions via the four bearings 24, without the need for customized design according to the radial dimension of the large shaft 200, thereby improving the versatility and applicability of the bearing installation state measuring device.

[0068] Of course, in other embodiments, the measuring structure 20 can be abutted against the outer peripheral surface of the large shaft 200 via other numbers (such as two, three, etc.) of bearings 24. However, if set in this way, it may cause the measuring structure 20 to be unstable or toppled relative to the large shaft 200, and may cause an eccentric error introduced by the skew of the central axis of the connecting ring 10 and the central axis L1 of the large shaft 200. In other embodiments, the measuring structure 20 can be provided with an abutting arc surface on the side of the mounting base 21 facing the central axis of the connecting ring 10, so as to abut against the outer peripheral surface of the large shaft 200 via the abutting arc surface. However, if set in this way, the abutting arc surface needs to be custom processed according to the outer peripheral surface of the large shaft 200.

[0069] Please refer to Figure 3 、 Figure 4 , in some embodiments of the present application, there are four measuring structures 20, two of the measuring structures 20 are oppositely arranged along the horizontal direction x, and the other two measuring structures 20 are oppositely arranged along the vertical direction y.

[0070] By adopting the above scheme, the two measuring structures 20 oppositely arranged along the horizontal direction x can focus on monitoring the installation state of the bearing bush 100 in the horizontal direction x (i.e., the left-right skew condition), and the two measuring structures 20 oppositely arranged along the vertical direction y can focus on monitoring the installation state of the bearing bush 100 in the vertical direction y (i.e., the up-down skew condition). The installation state of the bearing bush 100 in the diagonal direction (the direction intersecting the horizontal direction x and the vertical direction y) can be comprehensively monitored by the two sets of orthogonally distributed measuring structures 20, so as to realize the omnidirectional measurement of the installation state of the bearing bush 100 relative to the large shaft 200, and the skew degree and skew direction of the bearing bush 100 can be accurately and reliably quantified. Thus, the measurement range of the bearing bush installation state measuring device can be optimized, the measurement blind area can be reduced, and the measurement accuracy and measurement reliability of the bearing bush installation state measuring device can be improved.

[0071] Of course, in other embodiments, the number of the measuring structures 20 can be set as required, and the installation position of the measuring structures 20 can be set as required. For example, the measuring structures 20 can be provided with an even number, and each pair of the measuring structures 20 forms a group, and the measuring structures 20 forming pairs are oppositely arranged along the radial direction of the connecting ring 10.

[0072] Please refer to Figure 3 、 Figure 4 , in some embodiments of the present application, the connecting ring 10 is passed through the mounting base 21, and the measuring structure 20 includes a pin shaft 25, and the pin shaft 25 passes through and connects the mounting base 21 and the connecting ring 10.

[0073] It should be noted that the connecting ring 10 passes through and connects each mounting base 21 to connect the mounting bases 21 together. On this basis, the measuring structure 20 is also connected to the mounting base 21 and the connecting ring 10 through a pin shaft 25 to stabilize the mounting position and state of the mounting base 21 relative to the connecting ring 10 and limit the movement of the mounting base 21 relative to the connecting ring 10 (such as circumferential movement, axial movement, radial movement). Among them, the extending direction of the pin shaft 25 may intersect (for example, be perpendicular to) the extending direction of the connecting ring 10. Among them, the mounting base 21 may have a degree of freedom of slightly swinging around the pin shaft 25, but during the measurement operation of measuring the mounting state of the measuring bearing bush 100 relative to the large shaft 200, the mounting base 21 will abut against the outer peripheral surface of the large shaft 200 and will hardly swing slightly around the pin shaft 25.

[0074] By adopting the above scheme, each mounting base 21 can be connected together by passing the connecting ring 10 through and connecting them; the mounting base 21 and the connecting ring 10 can also be connected through the pin shaft 25 to form a rigid connection, so as to stabilize the mounting position and state of the mounting base 21 relative to the connecting ring 10 and effectively limit the movement of the mounting base 21 relative to the connecting ring 10. Based on this, the installation convenience, reliability, stability and accuracy between the connecting ring 10 and the measuring structure 20 can be improved. Moreover, during the measurement operation of measuring the mounting state of the measuring bearing bush 100 relative to the large shaft 200, the displacement between the measuring structure 20 and the connecting ring 10 can be reduced, and the data fluctuation caused by the position fluctuation of the distance measuring sensor 22 can be reduced, so that the reliability and effectiveness of the measurement data of the distance measuring sensor 22 can be improved, and the accuracy, reliability and effectiveness of the measurement result of the bearing bush mounting state measuring device can be improved.

[0075] Of course, in other embodiments, the mounting base 21 can be installed and fixed to the connecting ring 10 by other connection methods (not limited to fixed connection methods or detachable connection methods, such as bonding, welding, screw connection, etc.).

[0076] Please refer to Figure 3 、 Figure 4 , in some embodiments of the present application, the connecting ring 10 has a connected first end 11 and a second end 12, and the connection point of the second end 12 connected to the first end 11 is adjustable, so that the radial dimension of the connecting ring 10 is adjustable.

[0077] It should be noted that the connecting ring 10 has opposite first end 11 and second end 12. In the case where the first end 11 and the second end 12 are not connected, the connecting ring 10 can be in an open ring shape, or even can be unfolded into a straight strip shape. In the case where the first end 11 and the second end 12 are connected, at least a part of the connecting ring 10 can be in a closed ring shape. The adjustable connection point of the second end 12 connected to the first end 11 enables the radial dimension of the closed ring formed by the connecting ring 10 to be adjustable.

[0078] Among them, the second end 12 and the first end 11 adopt an adjustable connection design, so that the position where the second end 12 is connected to the first end 11 is adjustable. For example, in a specific implementation example, the first end 11 is provided with a long strip slide groove, and the second end 12 is first slidably inserted into the slide groove to change the radial size of the closed ring formed by the connecting ring 10, and then the second end 12 is connected and fixed to the first end 11 through fasteners such as bolts and pins. For example, in another specific implementation example, the second end 12 and the first end 11 are connected by a screw rod, and the relative position and relative distance between the second end 12 and the first end 11 can be adjusted by rotating the screw rod, so as to change the radial size of the closed ring formed by the connecting ring 10. For example, in another specific implementation example, the first end 11 is provided with a buckle or a pin, and the second end 12 is provided with a plurality of holes. By fixing the buckle or pin of the first end 11 at holes at different positions, the radial size of the closed ring formed by the connecting ring 10 can be changed.

[0079] By adopting the above scheme, by making the position where the second end 12 is connected to the first end 11 adjustable, it is convenient to change the radial size of the closed ring formed by the connecting ring 10. Based on this, the connecting ring 10 can be adapted to the outer periphery of the large shaft 200 with different radial sizes without the need for customized design according to the radial size of the large shaft 200, thereby improving the versatility and applicability of the bearing installation state measuring device. In addition, the tightness of the connecting ring 10 can be adjusted by adjusting the position where the second end 12 is connected to the first end 11, so that the connecting ring 10 can be closely fitted with the outer periphery of the large shaft 200, thereby improving the installation reliability and installation tightness between the connecting ring 10 and the large shaft 200, and reducing the risk of displacement (such as radial movement, circumferential sliding, etc.) of the connecting ring 10 relative to the large shaft 200 during the measurement operation of measuring the installation state of the bearing 100 relative to the large shaft 200, reducing the measurement error introduced due to looseness, thereby improving the accuracy, reliability and effectiveness of the measurement results of the bearing installation state measuring device.

[0080] Of course, in other embodiments, the position where the second end 12 is connected to the first end 11 is not adjustable, and the connecting ring 10 needs to be customized according to the radial size of the main shaft 200 .

[0081] See also Figure 3 , Figure 4 In some embodiments of the present application, one of the mounting bases 21 is a first mounting base 21a, the first end 11 is fixed to the first mounting base 21a, the second end 12 is connected to the first mounting base 21a, and the position where the second end 12 is connected to the first mounting base 21a is adjustable.

[0082] It should be noted that one of the mounting bases 21 is the first mounting base 21a. For example, the mounting base 21 located at the top is the first mounting base 21a.

[0083] The first end 11 is fixed to the first mounting base 21a. Exemplarily, in some embodiments, the first end 11 passes through the first mounting base 21a, and the pin shaft 25 passes through and connects the first mounting base 21a and the first end 11 to connect and fix the first end 11 to the first mounting base 21a. In other embodiments, other connection methods (not limited to fixed connection methods or detachable connection methods, such as bonding, welding, screw connection, etc.) can be adopted between the first end 11 and the first mounting base 21a to achieve connection and fixation.

[0084] The second end 12 is connected to the first mounting base 21a in a penetrating manner, and the second end 12 can slide relative to the first mounting base 21a to adjust the position where the second end 12 is connected to the first mounting base 21a. After adjustment, the second end 12 can be connected and fixed to the first mounting base 21a to stabilize the position where the second end 12 is connected to the first mounting base 21a. To facilitate repeated adjustment of the position where the second end 12 is connected to the first mounting base 21a, the second end 12 and the first mounting base 21a can adopt a detachable connection method, such as bolt connection, pin connection, snap connection, etc.

[0085] That is, in this embodiment, the first end 11 and the second end 12 of the connecting ring 10 are indirectly connected via the first mounting base 21a, and the position where the second end 12 is connected to the first mounting base 21a is adjustable, that is, the position where the second end 12 is connected to the first end 11 is adjustable.

[0086] By adopting the above solution, the first end 11 of the connecting ring 10 can be fixed to the first mounting base 21a, and the second end 12 of the connecting ring 10 can be passed through and connected to the first mounting base 21a, so as to indirectly connect the first end 11 and the second end 12 of the connecting ring 10 via the first mounting base 21a. Based on this, by adjusting the position where the second end 12 is connected to the first mounting base 21a, the position where the second end 12 is connected to the first end 11 can be adjusted, thereby changing the radial dimension of the closed ring formed by enclosing the connecting ring 10, so that the connecting ring 10 can be properly fitted around the outer circumference of the large shaft 200 with different radial dimensions. Thus, the adjustable connection design between the second end 12 and the first end 11 can be integrated into the first mounting base 21a, thereby reducing the independent adjusting components, simplifying and optimizing the structure of the bearing installation state measuring device, and reducing the assembly complexity of the bearing installation state measuring device. Moreover, indirectly connecting the first end 11 and the second end 12 via the first mounting base 21a is beneficial to improving the connection strength and connection reliability between the first mounting base 21a and the first end 11, and between the first mounting base 21a and the second end 12, thereby improving the structural reliability, use reliability and service life of the bearing installation state measuring device.

[0087] Of course, in other embodiments, the position where the second end 12 is connected to the first end 11 may be located between two adjacent mounting bases 21.

[0088] Please refer to Figure 3 、 Figure 4 In some embodiments of the present application, the second end 12 is detachably connected to the first mounting base 21a.

[0089] It should be noted that the second end 12 is detachably connected to the first mounting base 21a. When the second end 12 is connected to the first mounting base 21a, the connecting ring 10 can enclose to form a closed ring shape. When the second end 12 is detached from the first mounting base 21a, the connecting ring 10 can be in an open ring shape or even unfolded into a straight bar shape.

[0090] By adopting the above solution, it is convenient to detach the second end 12 from the first mounting base 21a and open the connecting ring 10, so that it is convenient and fast to fit the connecting ring 10 around the outer circumference of the large shaft 200 through the opening between the second end 12 and the first mounting base 21a, without fitting the connecting ring 10 around the outer circumference of the large shaft 200 along the axial direction, thereby improving the assembly convenience and assembly efficiency of the bearing installation state measuring device relative to the large shaft 200 and reducing the assembly time.

[0091] Of course, in other embodiments, on the basis that the connection site of the second end 12 to the first mounting base 21a is adjustable, the second end 12 can be restricted from completely disengaging from the first mounting base 21a. In this case, the connecting ring 10 needs to slide axially and fit over the outer circumference of the large shaft 200. In other embodiments, the second end 12 can be directly detachably connected to the first end 11.

[0092] Please refer to Figure 2 、 Figure 5 , in some embodiments of the present application, the bearing bush installation state measuring device includes a calibration member 30. The calibration member 30 includes a calibration shaft 31 and a calibration shoulder 32. The radial dimension of the calibration shaft 31 is the same as the radial dimension of the large shaft 200. The calibration shoulder 32 protrudes circumferentially along the calibration shaft 31. The end face of the calibration shoulder 32 facing the calibration shaft 31 is a calibration surface 321. The calibration member 30 is used for the connecting ring 10 to fit over the outer circumference of the calibration shaft 31, so as to facilitate each measuring structure 20 to measure the initial deviation.

[0093] It should be noted that in the calibration member 30, the radial dimension of the calibration shaft 31 is the same as the radial dimension of the large shaft 200, that is, the calibration shaft 31 is a standard part similar to the large shaft 200. The calibration shoulder 32 protrudes circumferentially relative to the calibration shaft 31 along the calibration shaft 31. The end face of the calibration shoulder 32 facing the calibration shaft 31 provides the calibration surface 321. The calibration surface 321 is a standard reference surface perpendicular to the central axis of the calibration shaft 31.

[0094] By adopting the above solution, before the connecting ring 10 fits over the outer circumference of the large shaft 200, the connecting ring 10 can be first fitted over the outer circumference of the calibration shaft 31 with the same radial dimension as the large shaft 200, and the distance measuring sensors 22 of each measuring structure 20 can be made to face the calibration surface 321 provided by the calibration shoulder 32, so as to use the calibration surface 321 as a standard reference surface, and facilitate the distance measuring sensors 22 of each measuring structure 20 to measure the initial distance reading from the calibration surface 321 to it, thereby facilitating each distance measuring sensor 22 to measure the initial deviation, facilitating to judge whether each distance measuring sensor 22 is on the same normal plane 26 according to the initial deviation, and facilitating to calibrate the initial deviation (for example, the measurement deviation of each distance measuring sensor 22 can be accurately adjusted to within 0.02 mm), and accurately calibrating each distance measuring sensor 22 to be on the same normal plane 26. Thus, after the connecting ring 10 fits over the outer circumference of the large shaft 200, during the measurement operation of measuring the installation state of the bearing bush 100 relative to the large shaft 200, each distance measuring sensor 22 can be accurately made to be on the same normal plane 26, thereby reducing or even basically eliminating the measurement reference deviation caused by installation tolerances and machining errors, improving the reference unity and data comparability of each distance measuring sensor 22, and improving the accuracy, reliability and effectiveness of the measurement results of the bearing bush installation state measuring device.

[0095] This embodiment is particularly suitable for being combined with the embodiment in which "along the axial and radial directions of the connecting ring 10, the position of the distance measuring sensor 22 relative to the mounting base 21 is adjustable; the measuring structure 20 includes a locking member 23, the locking member 23 is mounted on the mounting base 21 and is used to lock the position of the distance measuring sensor 22 relative to the mounting base 21". With such an arrangement, it is convenient to adjust the positions of the respective distance measuring sensors 22 relative to the mounting base 21 as required according to the initial deviation, so as to accurately calibrate the respective distance measuring sensors 22 to be in the same normal plane 26.

[0096] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the distance measuring sensor 22 is a laser distance measuring sensor.

[0097] It should be noted that the laser distance measuring sensor includes a laser emitter and a laser receiver. The laser emitter is used to emit laser towards the end face of the bearing shell 100, and the laser receiver is used to receive the laser returned by the end face of the bearing shell 100, so as to measure the distance from the end face of the bearing shell 100 to the normal plane 26.

[0098] By adopting the above scheme, by making the distance measuring sensor 22 a laser distance measuring sensor, the distance measuring sensor 22 can adopt non-contact measurement, and the distance measuring sensor 22 can measure the distance without physically contacting the end face of the bearing shell 100, thereby reducing the error caused by mechanical contact; the distance measuring sensor 22 can have a resolution of micrometers or even higher, and can accurately capture the minute deflection of the end face of the bearing shell 100; the distance measuring sensor 22 can have strong anti-interference ability and can reduce the influence of the environment on the distance measuring sensor 22. Thus, the measurement accuracy and applicability of the distance measuring sensor 22 can be improved.

[0099] Of course, in other embodiments, the distance measuring sensor 22 can adopt other types, such as infrared distance measuring sensors, ultrasonic distance measuring sensors, microwave radars, capacitive / inductive proximity sensors, and so on.

[0100] Please refer to Figure 3 、 Figure 4 、 Figure 6 In some embodiments of the present application, the measuring structure 20 includes a power supply 27. The power supply 27 is mounted on the mounting base 21 and is electrically connected to the distance measuring sensor 22.

[0101] It should be noted that the power supply 27 can also be called an energy storage power supply or a mobile power supply. The power supply 27 can be mounted inside or outside the mounting base 21. The power supply 27 can be charged, stored, and discharged. The power supply 27 can be electrically connected to electrical components such as the distance measuring sensor 22. During the measurement operation of measuring the installation state of the bearing shell 100 relative to the large shaft 200, the power supply 27 can supply power to electrical components such as the distance measuring sensor 22.

[0102] By adopting the above solution, during the measurement operation of measuring the installation state of the bearing shell 100 relative to the large shaft 200, the measuring structure 20 can supply power to electrical components such as the distance measuring sensor 22 through the power supply 27. Based on this, it is convenient for electrical components such as the distance measuring sensor 22 to operate persistently and reliably, and it is possible to avoid using conductive cables to externally connect the electrical components to an external power supply. Thus, the reliability of use of the measuring structure 20 can be improved, and the continuous working time of the measuring structure 20 can be extended.

[0103] Based on the setting of this embodiment, in the actual application scenario, the continuous working time of the distance measuring sensor 22 can reach more than 8 hours.

[0104] Of course, in other embodiments, conductive cables can be used to externally connect the electrical components to an external power supply.

[0105] Please refer to Figure 6 , in some embodiments of the present application, the bearing shell installation state measuring device includes an arithmetic unit 40 and a display screen 50. The arithmetic unit 40 is signal-connected to each distance measuring sensor 22, and the display screen 50 is signal-connected to the arithmetic unit 40.

[0106] It should be noted that the arithmetic unit 40 is signal-connected to each distance measuring sensor 22, so that the arithmetic unit 40 can receive the measurement data of each distance measuring sensor 22 and perform data analysis.

[0107] The display screen 50 is signal-connected to the arithmetic unit 40, so that the display screen 50 can receive the analysis data of the arithmetic unit 40 and display and present the analysis results to the operator.

[0108] In some embodiments, the arithmetic unit 40 and the display screen 50 can be combined into one, and jointly form an arithmetic display with data analysis function and display function, such as a PLC (Programmable Logic Controller) arithmetic display.

[0109] By adopting the above solution, the arithmetic unit 40 can receive the measurement data of each distance measuring sensor 22 and perform data analysis; the display screen 50 can also receive the analysis data of the arithmetic unit 40 and display and present the analysis results to the operator. Based on this, the bearing shell installation state measuring device can automatically realize data measurement, data recording, data transmission, data analysis and display of analysis results, can omit manual measurement, manual reading, manual recording, and manual data analysis, can reduce data deviation caused by human factors, can improve measurement speed, measurement accuracy, data analysis speed, and data analysis accuracy, can improve the automation degree of the bearing shell installation state measuring device, and can improve the operation efficiency and use performance of the bearing shell installation state measuring device.

[0110] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A bearing shell installation state measuring device for measuring the installation state of a bearing shell relative to a large shaft, wherein the bearing shell is sleeved on the outer periphery of the large shaft, and is characterized in that, The bearing bush installation state measuring device includes: A connecting ring for sleeving on the outer circumference of the large shaft; A plurality of measuring structures, each measuring structure including an installation base and a distance measuring sensor. Each installation base is installed on the connecting ring and is arranged at intervals. The distance measuring sensor is installed on the installation base and is used to measure the distance from the end face of the bearing bush to it. Each distance measuring sensor is in the same normal plane, and the normal plane is perpendicular to the central axis of the large shaft.

2. The bearing shell installation state measuring device according to claim 1, wherein Axially and radially along the connecting ring, the position of the distance measuring sensor relative to the installation base is adjustable; The measuring structure includes a locking member, the locking member is installed on the installation base, and is used to lock the position of the distance measuring sensor relative to the installation base.

3. The bearing shell installation state measuring device according to claim 1, wherein, The measuring structure includes four bearings distributed in a matrix. The bearings are installed on the installation base and can rotate circumferentially around their own central axes. The central axes of the bearings are parallel to the central axis of the large shaft, and the bearings are used to abut against the outer peripheral surface of the large shaft.

4. The bearing shell installation state measuring device according to claim 1, wherein, There are four measuring structures, two of which are arranged opposite to each other in the horizontal direction, and the other two measuring structures are arranged opposite to each other in the vertical direction.

5. The measuring device for the installation state of the bearing shell according to claim 1, wherein, The connecting ring is inserted through the installation base. The measuring structure includes a pin shaft, and the pin shaft penetrates and connects the installation base and the connecting ring.

6. The bearing shell installation state measuring device according to claim 1, characterized in that The connecting ring has a first end and a second end connected to each other. The position of the second end connected to the first end is adjustable, so that the radial dimension of the connecting ring is adjustable.

7. The bearing shell installation state measuring device according to claim 6, wherein, One of the installation bases is the first installation base. The first end is fixed to the first installation base, the second end is inserted and connected to the first installation base, and the position of the second end connected to the first installation base is adjustable.

8. The bearing shell installation state measuring device according to claim 7, wherein, The second end is detachably connected to the first installation base.

9. The bearing shell installation state measuring device according to any one of claims 1-8, characterized in that, The bearing bush installation state measuring device includes a calibration piece. The calibration piece includes a calibration shaft and a calibration shaft shoulder. The radial dimension of the calibration shaft is the same as the radial dimension of the large shaft. The calibration shaft shoulder protrudes from the calibration shaft along the circumferential direction of the calibration shaft. The end face of the calibration shaft shoulder facing the calibration shaft is the calibration surface; The calibration piece is used for the connecting ring to sleeve on the outer circumference of the calibration shaft, so that each measuring structure can measure the initial deviation.

10. The bearing shell installation state measuring device according to any one of claims 1-8, characterized in that, The distance measuring sensor is a laser distance measuring sensor; And / or, the measuring structure includes a power supply, the power supply is installed on the installation base, and is electrically connected to the distance measuring sensor; And / or, the bearing bush installation state measuring device includes an arithmetic unit and a display screen. The arithmetic unit is signal-connected to each distance measuring sensor, and the display screen is signal-connected to the arithmetic unit.

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