Thrust bearing assembly load test device and thrust bearing assembly load test method

Abstract

The invention belongs to the technical field of bearing load tests, and particularly relates to a thrust bearing assembly load test device and a thrust bearing assembly load test method.The thrust bearing assembly load test device comprises a test bench and a loading assembly, the test bench comprises a mounting base and a mounting frame connected with the mounting base, and the mounting base is used for supporting a thrust bearing assembly; the loading assembly comprises a loading driving part, a loading disc, a first detection part and a plurality of thrust plates, the loading driving part is connected to the mounting frame, the plurality of thrust plates are arranged on the loading disc at intervals, the loading driving part is connected with the loading disc through the first detection part, the loading driving part is used for driving the loading disc to move towards the thrust bearing assembly, and the first detection part is used for detecting the thrust bearing assembly. The first detection piece is used for detecting the overall acting force of the loading disc on the thrust bearing assembly, accurate simulation of the operation working condition of the thrust bearing assembly can be achieved, and the test precision is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bearing load test, and particularly relates to a thrust bearing assembly load test device and a thrust bearing assembly load test method. BACKGROUND

[0002] The thrust bearing assembly is a core component of a main pump motor of a nuclear power plant, and its performance directly affects the operation stability, reliability and safety of the main pump motor. The thrust bearing assembly of the main pump motor of the nuclear power plant mainly includes Kingsbury bearing pads (pads), support pads, support blocks, balance blocks and axles. The thrust bearing assembly has a complex structure and a special working environment, and thus puts forward high requirements on the manufacturing precision, assembly quality and operation performance of the assembly. In the actual operation of the main pump motor of the nuclear power plant, the thrust bearing assembly needs to bear extremely high axial load and complex working conditions, which may cause wear, fatigue or failure, and thus affects the normal operation of the main pump motor. Therefore, accurate detection and evaluation of the performance of the thrust bearing assembly are very important.

[0003] However, in practice, the performance detection of the thrust bearing assembly mainly depends on theoretical calculation and finite element analysis, and it is difficult to fully reflect the dynamic performance and load distribution characteristics under actual working conditions. Moreover, the thrust bearing assembly load test device has problems of insufficient test precision and low test efficiency. Therefore, how to accurately simulate the actual working conditions, improve the test precision and efficiency, and improve the detection level of the thrust bearing assembly is an important research content.

[0004] The above statements are only used to provide background technical information related to the application, and do not necessarily constitute the prior art. SUMMARY

[0005] The purpose of the embodiments of the application is to provide a thrust bearing assembly load test device and a thrust bearing assembly load test method, which can accurately simulate the actual working conditions, improve the test precision and efficiency, and improve the detection level of the thrust bearing assembly.

[0006] The technical solution adopted by the embodiments of the application is as follows: In a first aspect, a thrust bearing assembly load test device is provided, which comprises a test bench and a loading assembly. The test bench comprises a mounting seat and a mounting frame connected to the mounting seat, and the mounting seat is used to support the thrust bearing assembly. The loading assembly comprises a loading driving member, a loading disc, a first detection member and a plurality of thrust plates. The loading driving member is connected to the mounting frame, and the plurality of thrust plates are arranged at intervals on the loading disc. The loading driving member and the loading disc are connected through the first detection member. The loading driving member is used to drive the loading disc to move towards the thrust bearing assembly, so that the plurality of thrust plates are pressed against the plurality of pads of the thrust bearing assembly one by one. The first detection member is used to detect the overall force of the loading disc on the thrust bearing assembly.

[0007] Optionally, the loading driving member comprises a telescopic member, the telescopic member is connected to the mounting frame, a telescopic end of the telescopic member is connected to the side of the loading disc away from the mounting base through the first detection member, and the plurality of thrust plates are located on the side of the loading disc facing the mounting base.

[0008] Optionally, the loading driving member further comprises an electro-hydraulic station, the telescopic member is an oil cylinder, and the electro-hydraulic station is connected to the oil cylinder to provide hydraulic oil for the oil cylinder.

[0009] Optionally, the thrust bearing assembly load test device further comprises a control device, the control device is electrically connected to the first detection member to receive information detected by the first detection member, and the control device is electrically connected to the electro-hydraulic station to control the operation of the oil cylinder according to the information detected by the first detection member.

[0010] Optionally, the control device comprises a touch panel for manual operation, and the touch panel can display the detected information.

[0011] Optionally, the loading assembly further comprises a spherical hinge joint, a telescopic end of the telescopic member is connected to one side of the spherical hinge joint through the first detection member, and the other side of the spherical hinge joint is hingedly connected to the loading disc.

[0012] Optionally, the thrust bearing assembly load test device further comprises a plurality of copper foil sheets, and the plurality of copper foil sheets are used to be clamped one by one between the thrust plates and the bearing shells.

[0013] Optionally, the mounting frame comprises a guide rod and a fixed seat, the telescopic member is installed on the fixed seat, one end of the guide rod is connected to the mounting base, the other end of the guide rod is connected to the fixed seat, the loading disc is provided with a guide hole, and the guide rod is arranged in the guide hole.

[0014] Optionally, the loading assembly comprises a second detection member, and the second detection member is arranged between each thrust plate and the loading disc, and is used to detect the force applied by the corresponding thrust plate to the corresponding bearing shell.

[0015] Optionally, the mounting base comprises a supporting base and a balancing supporting base, the balancing supporting base is connected to the supporting base, and the balancing supporting base is provided with a containing groove for containing the balancing block and the supporting block of the thrust bearing assembly.

[0016] In a second aspect, a thrust bearing assembly load test method is provided, which uses the thrust bearing assembly load test device described above, and the thrust bearing assembly load test method comprises the following steps: placing the thrust bearing assembly on the mounting base; starting the loading driving member, and driving the loading disc and the plurality of thrust plates to move towards the thrust bearing assembly, so that the plurality of thrust plates are pressed against the plurality of bearing shells of the thrust bearing assembly one by one, until the first detection member detects that the overall force reaches a first preset value.

[0017] Optionally, the loading assembly comprises a second detection member, and the second detection member is arranged between each of the thrust plates and the loading disc, and is configured to detect the force acting on the corresponding bearing bush by the corresponding thrust plate; Before the first detection member detects that the overall force reaches the first preset value, the loading driving member drives the loading disc and the plurality of thrust plates to move towards the thrust bearing assembly, so that the plurality of thrust plates are pressed against the plurality of bearing bushes of the thrust bearing assembly one by one, until the first detection member detects that the overall force reaches the second preset value, and whether each of the second detection members is working normally is determined, and the second preset value is less than the first preset value.

[0018] Optionally, when the first detection member detects the first preset value, an average value A, a maximum value B and a minimum value C of the detection values of the second detection members are obtained, and if B-C≤0.1A, it is determined that the load distribution of the thrust bearing assembly is uniform.

[0019] Optionally, the thrust bearing assembly load test device further comprises a plurality of copper foil sheets, and after the thrust bearing assembly is placed on the mounting seat, the plurality of copper foil sheets are placed on the bearing bushes of the thrust bearing assembly one by one, and then the loading driving member is started.

[0020] Optionally, before the loading driving member is started, blue oil is brushed on the surface of the bearing bushes of the thrust bearing assembly.

[0021] The thrust bearing assembly load test device and the thrust bearing assembly load test method provided by the present application have at least one of the following technical effects: when the thrust bearing assembly load test device is used, the thrust bearing assembly to be tested is installed on the mounting seat, then the loading driving member is started, the loading driving member drives the loading disc and the plurality of thrust plates to move towards the thrust bearing assembly, until the plurality of thrust plates come into contact with the plurality of bearing bushes of the thrust bearing assembly one by one, the loading driving member continues to load, at the same time, the first detection member can detect the overall loading force of the loading driving member on the thrust bearing assembly in real time, and the loading driving member can dynamically adjust the output according to the detection result, for example, if the detection result deviates from the target value, the loading driving member immediately increases or decreases the output, forming a closed-loop control logic. This design can improve the accuracy of the loading force, realize accurate simulation of the operating conditions of the thrust bearing assembly, improve the test accuracy, in addition, the performance data under actual stress can be directly obtained through the physical loading test instead of theoretical calculation, which is also conducive to improving the accuracy of the test, and the physical loading operation is simple, thereby improving the test efficiency.

[0022] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of the thrust bearing assembly provided in this application.

[0025] Figure 2 A schematic structural diagram of a thrust bearing assembly load testing device provided in some embodiments of the present application.

[0026] Figure 3 for Figure 2 Schematic diagram of the structure of the test bench and parts of the loading assembly are shown in FIG.

[0027] Figure 4 for Figure 3 Schematic cross-section of parts of the test bench and loading assembly shown in FIG.

[0028] Figure 5 for Figure 4 Schematic diagram of the structure of the loading plate, thrust plate and second detection member shown in .

[0029] Figure 6 for Figure 2 Schematic diagram of the structure of the test bench part and the loading component part shown in FIG.

[0030] Figure 7 for Figure 2 Schematic diagram of the structure of parts of the test bench shown in.

[0031] Among them, the reference numerals in the figures are: 1. Thrust bearing assembly load test device; 11. Test bench; 111. Mounting seat; 1111. Support base; 1112. Balance support seat; 11121. Receiving groove; 11122. Oil tank; 112. Mounting frame; 1121. Guide rod; 1122. Fixed seat; 12. Loading assembly; 121. Loading drive member; 1211. Telescopic member; 1212. Electric hydraulic station; 122. Loading plate; 1221. Guide hole; 1222. Guide sleeve; 123. First detection member; 124. Thrust plate; 125. Ball joint; 126. Second detection member; 127. Support half sleeve; 13. Control device; 131. Touch panel; 2. Thrust bearing assembly; 21. Bearing; 22. Supporting shoe; 23. Support block; 24. Balance block; 25. Axle. DETAILED DESCRIPTION

[0032] So that the purposes, technical solutions and advantages of the embodiments of the present application are more apparent, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0033] In the description of the embodiments of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0034] In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the present application, it should be understood that the terms "in", "out", "side", "up", "bottom", "front", "back" and the like indicate the orientation or position relationship only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0038] In the description of the present application, it should be noted that the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B together, and the existence of B alone.

[0039] It should also be noted that the same reference signs in the embodiments of the present application represent the same component or the same part, and for the same parts in the embodiments of the present application, only one part or component may be labeled with a reference sign in the drawing, and it should be understood that the reference sign is also applicable to other identical parts or components.

[0040] The thrust bearing assembly of the main pump motor is the core component of the main pump motor of the nuclear power plant, and its performance directly affects the operation stability, reliability and safety of the main pump motor. Referring to Figure 1 As shown in the figure, the thrust bearing assembly 2 of the main pump motor of the nuclear power plant includes 8 bearing bushes 21, 8 bearing pads 22, 8 support blocks 23, 8 balance blocks 24 and 16 wheel shafts 25. The bearing bushes 21 are Kingsbury bearing bushes. The 8 support blocks 23 and the 8 balance blocks 24 are alternately distributed along the circumference of the thrust bearing assembly 2. The adjacent two support blocks 23 and balance blocks 24 are matched by a stepped structure and the wheel shaft 25. The 8 bearing bushes 21 are connected to the 8 support blocks 23 one by one through the bearing pads 22. The thrust bearing assembly can realize uniform load distribution under high load conditions by the self-adaptive adjustment capability of the support blocks 23, the balance blocks 24 and the wheel shafts 25, which are similar to the function of a seesaw, to avoid bearing bush 21 wear or failure caused by local overload. The 8 support blocks 23 and the 8 balance blocks 24 form a balanced beam structure with self-balancing characteristics, which can evenly distribute the thrust load to each bearing bush through the balanced beam structure to ensure that the thrust bearing assembly 2 can operate stably under normal, transient or accident conditions.

[0041] However, the thrust bearing assembly has a complex structure and a special working environment, which puts high requirements on the manufacturing precision, assembly quality and operating performance of the assembly. In the actual operation of the main pump motor of the nuclear power plant, the thrust bearing assembly needs to withstand extremely high axial load and complex working conditions, which may cause wear, fatigue or failure, thereby affecting the normal operation of the main pump motor. Therefore, accurate detection and evaluation of its performance are very important.

[0042] However, in practice, the performance detection of the thrust bearing assembly mainly relies on theoretical calculation and finite element analysis, which is difficult to fully reflect the dynamic performance and load distribution characteristics under actual working conditions. Moreover, the thrust bearing assembly load test device has problems such as insufficient test precision and low test efficiency. Therefore, how to accurately simulate the actual working conditions, improve the test precision and efficiency, and improve the detection level of the thrust bearing assembly is an important research content.

[0043] Based on this, the embodiment of the present application provides a thrust bearing assembly load test device and a thrust bearing assembly load test method. The thrust bearing assembly load test device can directly test the thrust bearing assembly through a loading test, and can adjust the loading condition of the loading driving member according to the detection result of the first detection member, so as to realize accurate loading of the thrust bearing assembly, accurately control the operation condition of the thrust bearing assembly, accurately simulate the actual working condition of the thrust bearing assembly, and improve the detection level of the thrust bearing assembly.

[0044] The thrust bearing assembly load test device and the thrust bearing assembly load test method provided by the embodiment of the present application can realize load test of the thrust bearing assembly. The thrust bearing assembly can be applied to a main pump motor of a nuclear power plant. Of course, the thrust bearing assembly load test device can also be used for load test of a thrust bearing assembly with similar structure.

[0045] As shown in Figures 2-4 In some embodiments, the thrust bearing assembly load test device 1 includes a test bench 11 and a loading assembly 12. The test bench 11 includes a mounting seat 111 and a mounting frame 112 connected to the mounting seat 111. The mounting seat 111 is used to support the thrust bearing assembly 2. The loading assembly 12 includes a loading driving member 121, a loading disc 122, a first detection member 123, and a plurality of thrust plates 124. The loading driving member 121 is connected to the mounting frame 112. The plurality of thrust plates 124 are arranged at intervals on the loading disc 122. The loading driving member 121 and the loading disc 122 are connected through the first detection member 123. The loading driving member 121 is used to drive the loading disc 122 to move towards the thrust bearing assembly 2, so that the plurality of thrust plates 124 are pressed one by one on the plurality of bearing shells 21 of the thrust bearing assembly 2. The first detection member 123 is used to detect the overall force of the loading disc 122 on the thrust bearing assembly 2.

[0046] The test bench 11 can be used as the basic support structure of the thrust bearing assembly load test device 1. The test bench 11 includes the mounting seat 111 and the mounting frame 112. The mounting seat 111 is used to stably support the thrust bearing assembly 2 to be tested and the mounting frame 112. The mounting seat 111 is used to bear the thrust bearing assembly 2 and directly contact the thrust bearing assembly 2, so that the position of the thrust bearing assembly 2 is fixed during the test, and the test error caused by unstable support is reduced.

[0047] The mounting frame 112 is used to support the loading assembly 12, especially to fix the loading driving member 121. The mounting frame 112 provides stable support for the transmission of the loading force. The mounting frame 112 and the mounting seat 111 can be fixedly connected through screwing, welding, clamping or the like.

[0048] The loading assembly 12 can be a component for loading and real-time detecting the loading force of the thrust bearing assembly 2, and the loading assembly 12 comprises a loading driver 121, a loading disc 122, a first detecting member 123 and a plurality of thrust plates 124.

[0049] The loading driver 121 can be a source of loading force, and the loading driver 121 is fixed by the mounting frame 112 and can output controllable axial force to drive the loading disc 122 to move towards the thrust bearing assembly 2. The loading driver 121 can be a hydraulic cylinder, a servo motor or the like power device.

[0050] The loading disc 122 can be an intermediate transmission of the loading force, and the loading disc 122 receives the force of the loading driver 121 and transmits the force to each bearing bush 21 of the thrust bearing assembly 2 through the plurality of thrust plates 124 below.

[0051] The thrust plate 124 can be a component in direct contact with the thrust bearing assembly 2, and the shape of the thrust plate 124 can be adapted to the shape of the bearing bush 21 to better contact the bearing bush 21 to achieve better loading. The plurality of thrust plates 124 are uniformly arranged along the circumference of the loading disc 122 to adapt to the plurality of bearing bushes 21 on the thrust bearing assembly 2.

[0052] For example, the number of thrust plates 124 is 8, and the 8 thrust plates 124 correspond to the 8 bearing bushes 21 one by one, so that each bearing bush 21 can be subjected to the corresponding loading force to simulate the stress state of each bearing bush 21 in the actual working condition.

[0053] The first detecting member 123 is connected between the loading driver 121 and the loading disc 122, and is used for real-time detecting the overall force output by the loading driver 121 (i.e. the total load of the loading disc 122 on the thrust bearing assembly 2) to provide data basis for loading adjustment. The first detecting member 123 can be a force sensor, a pressure transmitter or the like.

[0054] The thrust bearing assembly load test device 1 of the embodiment of the application is used to install the thrust bearing assembly 2 to be tested on the mounting seat 111, then start the loading driving member 121, the loading driving member 121 drives the loading disc 122 and the plurality of thrust plates 124 to move towards the thrust bearing assembly 2 until the plurality of thrust plates 124 are in one-to-one correspondence with the plurality of bearing shells 21 of the thrust bearing assembly 2, the loading driving member 121 continues to load, at the same time, the first detection member 123 can detect the overall loading force of the loading driving member 121 on the thrust bearing assembly 2 in real time, and the loading driving member 121 can dynamically adjust the output according to the detection result, for example, if the detection result deviates from the target value, the loading driving member 121 immediately increases or decreases the output, forming a closed-loop control logic. This design can improve the accuracy of the loading force, accurately simulate the operating conditions of the thrust bearing assembly 2, improve the test accuracy, in addition, the actual performance data under the actual stress is directly obtained through the physical loading test instead of the theoretical calculation, which is also beneficial to improve the accuracy of the test, and the physical loading operation is simple, which improves the test efficiency.

[0055] It should be noted that the thrust bearing assembly 2 used for testing can be directly used for the thrust bearing assembly 2 of the main pump motor of the nuclear power plant, or a thrust bearing assembly 2 that is consistent with the thrust bearing assembly 2 of the main pump motor of the nuclear power plant in terms of external dimensions and material can be used, so that the test result can truly reflect the performance of the thrust bearing assembly 2 in actual operation.

[0056] In some embodiments, the first detection member 123 is a force sensor.

[0057] The force sensor is a device that can convert the loading force into a measurable electrical signal (such as voltage or current).

[0058] By adopting the technical scheme of the embodiment, the first detection member 123 adopts the structural form of the force sensor, which is simple in structure and convenient to process and manufacture.

[0059] In some embodiments, the loading driving member 121 includes a telescopic member 1211 connected to the mounting frame 112, the telescopic end of the telescopic member 1211 is connected to the side of the loading disc 122 away from the mounting seat 111 through the first detection member 123, and the plurality of thrust plates 124 are located on the side of the loading disc 122 facing the mounting seat 111.

[0060] The telescopic part 1211 can be a component capable of telescoping, such as a hydraulic cylinder, an electric push rod, or other linear driving devices. The fixed end of the telescopic part 1211 is rigidly connected to the mounting frame 112 by bolts or welding, so that the telescopic part 1211 is stable in position when outputting force. The telescopic part 1211 is arranged on the upper side of the mounting frame 112, the loading disc 122 is arranged on the lower side of the telescopic part 1211, and the thrust bearing assembly 2 is arranged on the lower side of the loading disc 122. The telescopic part 1211, the loading disc 122, and the thrust bearing assembly 2 are coaxially arranged to improve the consistency of the loading force of the plurality of bearing shells 21 of the thrust bearing assembly 2.

[0061] By adopting the technical scheme of this embodiment, the loading driving part 121 adopts the structure of the telescopic part 1211, which is simple and convenient to load.

[0062] In some embodiments, the loading driving part 121 further comprises an electric hydraulic station 1212, and the telescopic part 1211 is an oil cylinder. The electric hydraulic station 1212 is connected to the oil cylinder to provide hydraulic oil for the oil cylinder.

[0063] The electric hydraulic station 1212 comprises a motor, a hydraulic pump (such as a gear pump or a plunger pump), an oil tank, an overflow valve, a filter, and the like. The motor drives the hydraulic pump to suck oil from the oil tank, pressurizes the hydraulic oil, and then delivers the hydraulic oil to the pipeline. The hydraulic oil is then delivered to the oil cylinder through the pipeline.

[0064] The oil cylinder comprises a cylinder barrel, a piston, a piston rod, and a sealing member. The hydraulic oil enters the rodless chamber or the rod chamber of the oil cylinder through the pipeline, pushes the piston to move linearly, and thus outputs the loading force. The oil cylinder can be a single-acting oil cylinder or a double-acting oil cylinder, which can be selected according to the test requirements.

[0065] The electric hydraulic station 1212 is connected to the oil port of the oil cylinder through a high-pressure oil pipe to form a closed hydraulic circuit. The hydraulic oil circulates under the drive of the electric hydraulic station 1212 to realize the reciprocating motion and force output of the oil cylinder.

[0066] By adopting the technical scheme of this embodiment, the loading driving part 121 adopts the electric hydraulic driving system of the electric hydraulic station 1212 and the oil cylinder. The hydraulic driving system has a very high power density, so that the oil cylinder can easily realize a loading force of tens of tons to hundreds of tons, fully matching the actual working load of the thrust bearing assembly 2 of the main pump motor of the nuclear power plant. The performance test of the thrust bearing assembly 2 under high load conditions in the main pump motor can be accurately simulated, and the test result has high accuracy and reliability when working with the first detection part 123.

[0067] In some embodiments, the thrust bearing assembly load test device 1 further comprises a control device 13, which is electrically connected with the first detection member 123 to receive information detected by the first detection member 123, and is electrically connected with the electro-hydraulic station 1212 to control the operation of the oil cylinder according to the information detected by the first detection member 123.

[0068] The control device 13 can be a device capable of collecting data and outputting instructions, and the control device 13 comprises a processor, a signal interface module and a human-computer interaction unit. The processor can be a PLC (Programmable Logic Controller), an industrial computer, a single-chip microcomputer, etc., which is responsible for executing a preset control logic and algorithm, processing detection data and generating control instructions. The signal interface module is used to establish electrical connection with the first detection member 123 (receiving analog or digital signals) and the electro-hydraulic station 1212 (outputting control signals) to realize signal conversion and transmission. The human-computer interaction unit can be a touch screen, an operation panel, etc., which is used for an operator to set test parameters (such as target load, loading rate, etc.) and monitor test process data (such as real-time loading force, oil cylinder state, etc.).

[0069] The control device 13 can obtain the force data detected by the first detection member 123 in real time, so as to understand the load condition of the current thrust bearing assembly 2 and provide a basis for subsequent control decisions. For example, if the first detection member 123 detects that the loading force does not reach the set value, the control device 13 will receive the corresponding signal. The control device 13 is electrically connected with the electro-hydraulic station 1212, which provides hydraulic oil for the oil cylinder, and the oil cylinder drives the loading disc 122 to move as a telescopic member 1211. The control device 13 sends instructions to the electro-hydraulic station 1212 according to the information received from the first detection member 123, and then controls the operation of the oil cylinder. When the loading force is detected to be insufficient, the control device 13 can control the electro-hydraulic station 1212 to increase the oil supply amount, so that the oil cylinder piston extends longer and pushes the loading disc 122 to further approach the thrust bearing assembly 2 to increase the loading force; on the contrary, if the loading force is too large, the electro-hydraulic station 1212 is controlled to reduce the oil supply amount to reduce the loading force.

[0070] By adopting the technical scheme of this embodiment, under the action of the control device 13, the thrust bearing assembly load test device 1 can automatically adjust the operation of the oil cylinder according to the actually detected loading force, so as to realize accurate control of the loading process of the thrust bearing assembly 2. This helps to accurately simulate the actual working condition of the thrust bearing assembly 2, improves the test accuracy and efficiency, and better detects the performance of the thrust bearing assembly 2.

[0071] In some embodiments, the control device 13 comprises a touch panel 131 for personnel to touch and operate, and the touch panel 131 can display the detected information.

[0072] The touch panel 131 can be a touch display screen or the like, and the touch panel 131 can display a control interface in a graphical visual manner to facilitate personnel operation. The control device 13 adopts a visual programming module control and data acquisition system to realize automatic control of loading force and real-time acquisition and analysis of data. The user can intuitively operate through the graphical interface, which significantly improves the test efficiency and data processing capability.

[0073] By adopting the technical solutions of this embodiment, the touch panel 131 is designed to make personnel operation simpler and more intuitive, thereby reducing the operation threshold and improving data interpretation efficiency and test efficiency.

[0074] In some embodiments, the loading assembly 12 further includes a spherical hinge joint 125, and the telescopic end of the telescopic member 1211 is connected to one side of the spherical hinge joint 125 through the first detection member 123, and the other side of the spherical hinge joint 125 is hingedly connected to the loading disc 122.

[0075] The spherical hinge joint 125 can be a joint structure that allows two components to move relative to each other in three rotational degrees of freedom. The spherical hinge joint 125 includes a ball head and a socket. For example, the ball head is connected to the telescopic end of the telescopic member 1211 (e.g., a piston rod of an oil cylinder or the like), and the socket is connected to the loading disc 122. Of course, in other examples, the ball head is connected to the loading disc 122, and the socket is connected to the telescopic end of the telescopic member 1211 (e.g., a piston rod of an oil cylinder or the like).

[0076] By adopting the technical solutions of this embodiment, the telescopic end of the telescopic member 1211 is connected to the loading disc 122 through the spherical hinge joint 125, so that the loading disc 122 can be inclined relative to the telescopic member 1211 to adapt to the situation that the bushing 21 of the thrust bearing assembly 2 is inclined or multiple bushings 21 are inconsistent in height, so that the multiple thrust plates 124 can be in close contact with the multiple bushings 21, and the loading force can be loaded vertically and uniformly on the multiple bushings 21 of the thrust bearing assembly 2.

[0077] In some embodiments, the thrust bearing assembly load test device 1 further includes multiple copper foil sheets, which are used to be clamped one-to-one between the thrust plates 124 and the bushings 21.

[0078] In some examples, the thickness of the copper foil sheet is 0.05mm~0.2mm, and the number of copper foil sheets is the same as the number of thrust plates 124.

[0079] The height of the bearing bush 21 deviates due to installation, running wear or machining deviation and other factors, which causes the height of the bearing bush 21 to be inconsistent during the test of the thrust bearing assembly 2, and the bearing bush 21 is prone to uneven load. During the test, the plurality of copper foils are placed one by one on the plurality of bearing bushes 21, and the thrust plate 124 is pressed on the copper foils. The copper foils can fill the small gap between the thrust plate 124 and the bearing bush 21 through plastic deformation. After the test is completed, the deformation of the copper foils is observed to determine whether the load distribution of the bearing bush 21 is uniform, thereby testing the self-adaptive adjustment performance of the thrust bearing assembly 2.

[0080] Please refer to Figure 5 and Figure 6 As shown in FIGS. 1 and 2, in some embodiments, the mounting frame 112 includes a guide rod 1121 and a fixed seat 1122, the telescopic piece 1211 is installed on the fixed seat 1122, one end of the guide rod 1121 is connected to the mounting seat 111, the other end of the guide rod 1121 is connected to the fixed seat 1122, and the loading disc 122 is provided with a guide hole 1221, and the guide rod 1121 is arranged in the guide hole 1221.

[0081] The guide rod 1121 can refer to a component for guiding the linear motion of the loading disc 122. The guide rod 1121 can be a round rod. The guide rod 1121 is arranged in the guide hole 1221, and a guide sleeve 1222 can be arranged in the guide hole 1221. The guide rod 1121 is arranged in the guide sleeve 1222, and the guide sleeve 1222 can improve the smoothness of the linear motion of the loading disc 122. The guide rod 1121 is vertically arranged, the upper end of the guide rod 1121 is connected to the fixed seat 1122, and the lower end of the guide rod 1121 is connected to the mounting seat 111. The number of guide rods 1121 is multiple, and the guide rods 1121 are distributed along the circumference of the loading disc 122 to better guide the linear motion of the loading disc 122 and improve the stability of the motion of the loading disc 122.

[0082] The fixed seat 1122 can refer to a component for fixing the telescopic piece 1211. The cylinder body of the oil cylinder is fixed to the fixed seat 1122, and the piston rod of the oil cylinder passes through the fixed seat 1122 to be connected to the loading disc 122. It should be noted that the loading disc 122 is constrained by the guide rod 1121, and the movement range of the ball hinge joint 125 is indirectly limited. However, the ball hinge joint 125 can move within a small range to enable the loading force to be loaded vertically on the thrust bearing assembly 2.

[0083] By adopting the technical scheme of the embodiment, the guide rod 1121 can guide the linear motion of the loading disc 122 and improve the stability of the motion of the loading disc 122, which is conducive to improving the accuracy of the loading.

[0084] Please refer to Figure 7As shown, in some embodiments, the loading assembly 12 comprises a second detection member 126, and the second detection member 126 is arranged between each of the thrust plates 124 and the loading disc 122, and is used to detect the force of the corresponding thrust plate 124 acting on the corresponding bearing bush 21.

[0085] The second detection member 126 plays a role of a bridge between the thrust plate 124 and the loading disc 122, and each of the thrust plates 124 is correspondingly provided with the second detection member 126. The second detection member 126 can detect the loading force on the thrust plate 124 connected thereto, so that the loading force of each bearing bush 21 can be independently detected, and the working state information of each bearing bush 21 can be accurately obtained. The second detection member 126 can be a pressure sensor, a strain gauge or other elements with force-electricity conversion function.

[0086] When the thrust plate 124 transmits the loading force to the corresponding bearing bush 21, the second detection member 126 detects the loading force and converts the force signal into an electric signal or other measurable signal, which is fed back to the control device 13. The control device 13 can know the size of the force of the thrust plate 124 acting on the bearing bush 21 by measuring and analyzing these signals. Each of the thrust plates 124 is correspondingly provided with the second detection member 126, so that the stress condition of each bearing bush 21 can be monitored in real time, and the uniform distribution of the load can be judged according to the stress condition. At the same time, the load distribution of the thrust bearing assembly 2 can be adjusted according to the stress condition of each bearing bush 21, so that the load distribution of the thrust bearing assembly 2 is more uniform. The stress condition of each bearing bush 21 can be displayed in real time through the touch panel 131, and the out-of-tolerance bearing bush 21 can be identified by color, so that the operator can quickly identify the problem.

[0087] Please refer to Figure 3 and Figure 4 As shown, in some embodiments, the mounting seat 111 comprises a support base 1111 and a balance support seat 1112, and the balance support seat 1112 is connected to the support base 1111, and the balance support seat 1112 is provided with a containing groove 11121 for containing the balance block 24 and the support block 23 of the thrust bearing assembly 2.

[0088] The support base 1111 is the basic part of the mounting seat 111, and is used to provide stable support. The support base 1111 can adopt a frame structure, a flat plate structure, etc. The balance support seat 1112 is used to carry the thrust bearing assembly 2, and the lower end of the guide rod 1121 is fixed to the balance support seat 1112.

[0089] The balance support base 1112 is provided with a containing groove 11121 for containing the balance block 24 and the support block 23 of the thrust bearing assembly 2. The containing groove 11121 is arranged to be stably fixed to the thrust bearing assembly 2, which can reduce the risk of displacement of the thrust bearing assembly 2 during loading, so as to improve the accuracy of the test. The bearing bush 21 protrudes out of the containing groove 11121, so as to facilitate contact with the thrust plate 124. The containing groove 11121 is a circular ring groove, which is matched with the shape of the thrust bearing assembly 2, so as to better fix the thrust bearing assembly 2.

[0090] In some embodiments, the balance support base 1112 is provided with an oil groove 11122 on the side of the support base 1111, which is used to introduce lubricating oil into the thrust bearing assembly 2, so as to better simulate the actual use of the thrust bearing assembly 2.

[0091] In some embodiments, the control device 13 and the electro-hydraulic station 1212 form two modules respectively, and the components of the test bench 11 and the loading assembly 12 except the electro-hydraulic station 1212 form one module, so that the thrust bearing assembly load test device 1 adopts a modular design, which is convenient for improving the maintenance and repair convenience of the thrust bearing assembly load test device 1, effectively reduces the use cost and maintenance difficulty, and improves the long-term operation stability of the thrust bearing assembly load test device 1.

[0092] In some embodiments, the guide rod 1121 is provided with a support half sleeve 127, which is located between the loading disc 122 and the mounting seat 111. The support half sleeve 127 is used to support the loading disc 122. Before the thrust bearing assembly 2 is installed on the mounting seat 111, the support half sleeve 127 can be clamped outside the guide rod 1121 from the side of the guide rod 1121, so as to block the loading disc 122 from continuing to move downward, so that there is a certain space between the loading disc 122 and the mounting seat 111, which facilitates the subsequent installation of the thrust bearing assembly 2.

[0093] In some embodiments, the thrust bearing assembly load test method adopts the above-mentioned thrust bearing assembly load test device 1, and the thrust bearing assembly load test method comprises the following steps: Placing the thrust bearing assembly 2 on the mounting seat 111; Starting the loading driving member 121 to drive the loading disc 122 and the plurality of thrust plates 124 to move towards the thrust bearing assembly 2, so that the plurality of thrust plates 124 are pressed against the plurality of bearing bushes 21 of the thrust bearing assembly 2 one by one, until the first detection member 123 detects that the overall acting force reaches the first preset value.

[0094] The first preset value can be the target value mentioned above.

[0095] By adopting the technical scheme of the embodiment, the thrust bearing assembly load test method adopts the thrust bearing assembly load test device 1, uses entity loading test instead of theoretical calculation, directly obtains performance data under actual stress, is also beneficial to improve the accuracy of the test, and the entity loading operation is simple, and the test efficiency is improved.

[0096] In some embodiments, the loading assembly 12 includes a second detection piece 126, and the second detection piece 126 is arranged between each thrust plate 124 and the loading disc 122, and is used to detect the force of the corresponding thrust plate 124 acting on the corresponding bearing pad 21; before the first detection piece 123 detects that the overall force reaches the first preset value, the loading driving piece 121 drives the loading disc 122 and the plurality of thrust plates 124 to move towards the thrust bearing assembly 2, so that the plurality of thrust plates 124 are pressed against the plurality of bearing pads 21 of the thrust bearing assembly 2 one by one, until the first detection piece 123 detects that the overall force reaches the second preset value, and it is judged whether each second detection piece 126 is working normally, and the second preset value is less than the first preset value.

[0097] Before the test load reaches the target value, the test load can be loaded to the second preset value, so that each second detection piece 126 is normal, so as to improve the accuracy of the subsequent test. The design that the second preset value is less than the first preset value, that is, the lower load is used to test whether the second detection piece 126 is working normally, can reduce the risk of overload damage of the thrust bearing assembly 2; in addition, the low load test can quickly troubleshoot the second detection piece 126, improve the one-time success rate of the subsequent test, and significantly improve the efficiency.

[0098] In some embodiments, when the first detection piece 123 detects the first preset value, the average value A, the maximum value B and the minimum value C of the detection value of the second detection piece 126 are obtained, and if B-C≤0.1A, it is judged that the load distribution of the thrust bearing assembly 2 is uniform.

[0099] The first detection piece 123 detects the overall force of the loading system on the bearing, and when the first preset value is reached, it indicates that the loading has reached the set working condition. At this time, the force of each thrust plate 124 acting on the corresponding bearing pad 21, that is, the component force, is obtained through the second detection piece 126. The average value A, the maximum value B and the minimum value C of these component forces are calculated, and if the difference between the maximum value B and the minimum value C is not more than 10% of the average value A, it is considered that the component forces of each bearing pad 21 are close, and it is considered that the load distribution of the thrust bearing assembly 2 is uniform.

[0100] By adopting the technical scheme of the embodiment, the stress uniformity of the thrust bearing assembly 2 can be detected.

[0101] In some embodiments, the thrust bearing assembly load test device 1 further comprises a plurality of copper foils, which are placed on the bearing shells 21 of the thrust bearing assembly 2 one by one after the thrust bearing assembly 2 is placed on the mounting seat 111, and then the loading driver 121 is started.

[0102] During the test, the copper foils are placed on the bearing shells 21 one by one, and the thrust plate 124 is pressed on the copper foils. The copper foils can fill the small gap between the thrust plate 124 and the bearing shells 21 through plastic deformation. After the test is completed, the deformation of the copper foils is observed to determine whether the load distribution of the bearing shells 21 is uniform, thereby testing the self-adaptive adjustment performance of the thrust bearing assembly 2.

[0103] In some embodiments, the surface of the bearing shells 21 of the thrust bearing assembly 2 is brushed with blue oil before the loading driver 121 is started.

[0104] The surface of the bearing shells 21 of the thrust bearing assembly 2 is brushed with blue oil after the thrust bearing assembly 2 is placed on the mounting seat 111, or the surface of the bearing shells 21 of the thrust bearing assembly 2 is brushed with blue oil before the thrust bearing assembly 2 is placed on the mounting seat 111.

[0105] Blue oil is a commonly used contact indicator in industrial detection. Blue oil is usually mixed with pigments (such as Prussian blue, red lead) and oil (such as vaseline, machine oil) in proportion.

[0106] After the blue oil is evenly applied to the surface of the bearing shells 21, the blue oil can penetrate into the defects on the surface of the bearing shells 21. Through subsequent cleaning and developing processes, the defect positions can be developed with blue marks, thereby directly determining whether there are cracks, pits and other defects on the surface of the bearing shells 21.

[0107] When the thrust plate 124 contacts and exerts pressure on the surface of the bearing shells 21, the blue oil in the contact area will be wiped off, forming an oil-free bright contact mark, and the non-contact area will retain the blue oil coating, thereby determining the fitting condition of the thrust plate 124 and the bearing shells 21. In some examples, the fitting rate of the thrust plate 124 and the bearing shells 21 is required to be not less than 80%.

[0108] By using the technical scheme of this embodiment, the blue oil detection can find potential problems of the thrust bearing assembly 2 in advance, thereby reducing the risk of failure due to poor contact in subsequent high-load tests.

[0109] The above description of each embodiment tends to emphasize the differences between each embodiment, and the same or similar parts can be referred to each other. For the sake of brevity, the same or similar parts will not be described here.

[0110] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A thrust bearing assembly load test device, characterized in that: include: A test bench, comprising a mounting seat and a mounting frame connected to the mounting seat, wherein the mounting seat is used to support the thrust bearing assembly; The loading assembly includes a loading driver, a loading disk, a first detection member and multiple thrust plates. The loading driver is connected to the mounting frame, and the multiple thrust plates are spaced apart on the loading disk. The loading driver and the loading disk are connected via a first detection member. The loading driver is used to drive the loading disk to move toward the thrust bearing assembly so that the multiple thrust plates are pressed one-to-one against the multiple bearing shells of the thrust bearing assembly. The first detection member is used to detect the overall force of the loading disk on the thrust bearing assembly.

2. The thrust bearing assembly load testing device according to claim 1, characterized in that: The loading drive member includes a telescopic member, which is connected to the mounting frame. The telescopic end of the telescopic member is connected to the side of the loading disk facing away from the mounting seat through the first detection member, and the plurality of thrust plates are located on the side of the loading disk facing the mounting seat.

3. The thrust bearing assembly load testing device according to claim 2, characterized in that: The loading drive component further includes an electric hydraulic station, the telescopic component is an oil cylinder, and the electric hydraulic station is connected to the oil cylinder to provide hydraulic oil to the oil cylinder.

4. The thrust bearing assembly load testing device according to claim 3, characterized in that: The thrust bearing assembly load testing device also includes a control device, which is electrically connected to the first detection member to receive information detected by the first detection member, and the control device is electrically connected to the electric hydraulic station to control the operation of the cylinder according to the information detected by the first detection member.

5. The thrust bearing assembly load testing device according to claim 4, characterized in that: The control device includes a touch panel for touch operation by a person, and the touch panel can display the detected information.

6. The thrust bearing assembly load testing device according to claim 2, characterized in that: The loading assembly further comprises a ball joint, the telescopic end of the telescopic member is connected to one side of the ball joint via the first detection member, and the other side of the ball joint is hinged to the loading disk.

7. The thrust bearing assembly load testing device according to claim 6, characterized in that: The thrust bearing assembly load testing device further comprises a plurality of copper foils, which are used to be clamped between the thrust plate and the bearing bush in a one-to-one correspondence.

8. The thrust bearing assembly load testing device according to claim 2, characterized in that: The mounting frame includes a guide rod and a fixing seat, the telescopic member is installed on the fixing seat, one end of the guide rod is connected to the mounting seat, and the other end of the guide rod is connected to the fixing seat, the loading plate is provided with a guide hole, and the guide rod is inserted into the guide hole.

9. The thrust bearing assembly load testing device according to any one of claims 1 to 8, characterized in that: The loading assembly includes a second detection member, which is provided between each thrust plate and the loading disk. The second detection member is used to detect the force exerted by the corresponding thrust plate on the corresponding bearing shell.

10. The thrust bearing assembly load testing device according to any one of claims 1 to 8, characterized in that: The mounting seat includes a supporting base and a balancing supporting base, wherein the balancing supporting base is connected to the supporting base and is provided with an accommodating groove for accommodating a balancing block and a supporting block of the thrust bearing assembly.

11. A thrust bearing assembly load test method, characterized in that: Using the thrust bearing assembly load testing device according to any one of claims 1 to 10, the thrust bearing assembly load testing method comprises: placing the thrust bearing assembly on the mounting seat; The loading drive member is started, and the loading drive member drives the loading disk and the plurality of thrust plates to move toward the thrust bearing assembly, so that the plurality of thrust plates are pressed against the plurality of bearing shells of the thrust bearing assembly one by one, until the first detection member detects that the overall force reaches a first preset value.

12. The thrust bearing assembly load testing method according to claim 11, wherein: The loading assembly includes a second detection member, which is provided between each thrust plate and the loading disc, and is used to detect the force exerted by the corresponding thrust plate on the corresponding bearing bush; Before the first detection member detects that the overall force reaches a first preset value, the loading drive member drives the loading disk and the plurality of thrust plates to move toward the thrust bearing assembly, so that the plurality of thrust plates are pressed one-to-one against the plurality of bearing shells of the thrust bearing assembly, until the first detection member detects that the overall force reaches a second preset value, and determines whether each of the second detection members is working normally, and the second preset value is less than the first preset value.

13. The thrust bearing assembly load testing method according to claim 12, wherein: When the first detection member detects and obtains the first preset value, the average value A, maximum value B and minimum value C of the detection value of the second detection member are obtained. If BC≤0.1A, it is determined that the load distribution of the thrust bearing assembly is uniform.

14. The thrust bearing assembly load testing method according to claim 11, wherein: The thrust bearing assembly load test device also includes a plurality of copper foils. After the thrust bearing assembly is placed on the mounting seat, the plurality of copper foils are placed one by one on the bearing shells of the thrust bearing assembly, and then the loading drive component is started.

15. The thrust bearing assembly load testing method according to claim 11, wherein: Before starting the loading drive member, brush blue oil on the surface of the bearing shell of the thrust bearing assembly.

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