Bearing clearance detection device and bearing clearance detection system for pump

Abstract

The utility model discloses a bearing clearance detection device and a bearing clearance detection system for a pump, which are used for detecting the axial clearance of a bearing mounted on a pump shaft, and comprise an adapter which is sleeved on a bearing box on the outer side of the bearing to be detected; the mounting mechanism is connected to the adapter plate; the air cylinder is mounted on the mounting mechanism and provided with a first connector and a second connector, the first connector is connected with a first air pipe, and the second connector is connected with a second air pipe; the air valve control mechanism is used for controlling air inlet and outlet flowing states of the first air pipe and the second air pipe so as to drive the output shaft of the air cylinder to do reciprocating rectilinear motion in the axial direction of the pump shaft; one end of the pump connection adapter is connected with a pump shaft, and the other end is in transmission connection with an output shaft of the air cylinder; and the detection piece is used for acquiring the axial clearance of the bearing to be detected. The axial clearance detection device can be used for detecting the axial clearance of the bearing mounted on the pump shaft.

Description

Technical Field

[0001] This utility model relates to the field of bearing clearance technology, and in particular to a bearing clearance detection device and bearing clearance detection system for pumps. Background Technology

[0002] As one of the most important rotating components in a pump assembly, bearings play a crucial role in the normal operation of the pump.

[0003] Bearing clearance, also known as bearing clearance, refers to the amount of movement a bearing makes when, without being installed on a shaft or bearing housing, one of its inner or outer rings is fixed, and the looser ring moves radially or axially. Based on the direction of movement, it can be divided into radial clearance and axial clearance. The size of the clearance during operation affects the bearing's rolling fatigue life, temperature rise, noise, vibration, and other performance characteristics. Bearing clearance is one of the key indicators for the normal and stable operation of a bearing, and accurate measurement of bearing clearance is crucial.

[0004] However, for bearings installed on pumps, there is currently a lack of dedicated testing equipment to detect their axial clearance. Therefore, it is necessary to propose a pump bearing clearance testing device and system to solve at least one of the aforementioned problems.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a pump bearing clearance detection device and a bearing clearance detection system, which can be used to detect the axial clearance of bearings installed on the pump shaft.

[0007] The specific technical solution of this utility model embodiment is as follows:

[0008] A pump bearing clearance detection device is disclosed, used to detect the axial clearance of a bearing mounted on a pump shaft. The device includes: an adapter plate fitted onto a bearing housing outside the bearing to be tested, with a central hole in the center for the pump shaft to pass through; a mounting mechanism connected to the adapter plate; a cylinder mounted on the mounting mechanism, having a first interface and a second interface, the first interface connected to a first air pipe and the second interface connected to a second air pipe; a valve control mechanism for controlling the gas flow in and out of the first and second air pipes to drive the output shaft of the cylinder to reciprocate linearly along the axial direction of the pump shaft; a pump connecting adapter, one end of which connects to the pump shaft and the other end is connected to the output shaft of the cylinder; and a detection element for acquiring the axial clearance of the bearing to be tested.

[0009] In a preferred embodiment, the mounting mechanism includes a cylinder support and a support leg. The cylinder support includes a mounting platform, and the mounting platform has a mounting hole in the middle for the output shaft of the cylinder to pass through. The support leg is disposed between the mounting platform and the adapter plate.

[0010] In a preferred embodiment, a limiting mechanism is provided between the pump connecting adapter and the output shaft of the cylinder. The limiting mechanism includes: a limiting slide rail extending longitudinally along the axial direction of the pump shaft, one end of the limiting slide rail being connected to the mounting platform and the other end being connected to the adapter plate; a limiting support slidably disposed on the limiting slide rail; and a connecting assembly mounted on the limiting support and connected to both the output shaft of the cylinder and the pump connecting adapter.

[0011] In a preferred embodiment, the adapter assembly includes a cylinder connecting screw, a limiting block, and a limiting connector arranged sequentially along the axial direction of the pump shaft. One end of the cylinder connecting screw is connected to the output shaft of the cylinder, and the other end passes through the limiting block. One end of the limiting connector passes through the limiting block and can rotate relative to the limiting block but cannot move radially relative to the limiting block. The other end is connected to the pump connecting adapter assembly.

[0012] In a preferred embodiment, the limiting connector includes a detachably connected limiting connecting rod and a limiting transition connecting rod. One end of the limiting connecting rod passes through the limiting block and can rotate circumferentially relative to the limiting block but cannot move radially relative to the limiting block. The other end is connected to the limiting transition connecting rod. One end of the limiting transition connecting rod is detachably connected to the limiting connecting rod, and the other end is detachably connected to the pump connecting adapter.

[0013] In a preferred embodiment, the limiting block is detachably mounted on the limiting support, the limiting support having opposing first and second surfaces along the axial direction of the pump shaft, the limiting block including a first limiting block located on one side of the first surface and a second limiting block located on one side of the second surface; a first limiting groove is formed in the first limiting block, and a first engaging portion is radially protruded from the cylinder connecting screw, the first engaging portion being clearance-fitted with the first limiting groove, and the first engaging portion being rotatably mounted in the first limiting groove; a second limiting groove is formed in the second limiting block, and a second engaging portion is radially protruded from the limiting connecting rod, the second engaging portion being clearance-fitted with the second limiting groove, and the second engaging portion being rotatably mounted in the second limiting groove.

[0014] In a preferred embodiment, the cylinder is a bidirectional cylinder, and both the first air pipe and the second air pipe are inlet and outlet air pipes.

[0015] In a preferred embodiment, the air valve control mechanism includes an air valve seat and an air valve switch. The air valve seat is connected to the first air pipe and the second air pipe. The air valve seat is provided with an air inlet and an air outlet. The air valve switch is used to control the communication relationship between the air inlet, the air outlet and the first air pipe and the second air pipe.

[0016] In a preferred embodiment, the adapter plate is provided with multiple rings of connecting holes at radial intervals. The diameter and hole spacing of the multiple rings of connecting holes are different, and the multiple rings of connecting holes are used to adapt to bearing housings with different outer diameters.

[0017] In a preferred embodiment, the detection element includes a displacement sensor, which is used to measure the offset corresponding to the automatic reset when the bearing moves to its limit position.

[0018] In a preferred embodiment, the mounting mechanism is further provided with a lifting hole.

[0019] A bearing clearance detection system, the bearing clearance detection system comprising any of the pump bearing clearance detection devices described above.

[0020] The technical solution of this utility model has the following significant beneficial effects:

[0021] The pump bearing clearance detection device provided in this application embodiment achieves precise docking between the detection equipment and the bearing housing through an adapter plate, providing a stable installation and measurement foundation for the overall detection structure. The installation mechanism provides fixed support for the cylinder, ensuring that the cylinder output shaft is axially aligned with the pump shaft. The air valve control mechanism drives the cylinder output shaft to reciprocate linearly along the pump shaft axis by regulating the air intake and exhaust states of the two air pipes. This power is transmitted to the pump shaft through the pump connection adapter, causing the bearing to move to its limit position. After the power is removed, the bearing automatically resets, and the axial clearance offset can be measured. The detection component can collect the bearing axial clearance value. The entire solution achieves targeted detection of the axial clearance of the pump bearing in the assembled state through the coordinated logic of fixing, driving, force transmission, and detection, solving the problem of poor adaptability and inability to accurately detect the axial clearance of the assembled pump bearing in existing general-purpose detection equipment. The coordinated design of the core components ensures the stability of the detection process, laying the foundation for subsequent accurate detection. Compared with manual drive, the air valve-controlled cylinder drive method makes it easier to control the magnitude and direction of the force, reducing the impact of human operation on the detection accuracy.

[0022] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0023] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0024] Figure 1 This is a schematic diagram of a pump bearing clearance detection device provided in the embodiments of this application.

[0025] Figure 2 for Figure 1 Sectional view of AA;

[0026] Figure 3 This is a schematic diagram of a pump bearing clearance detection device in detection mode, provided for the implementation of this application.

[0027] The reference numerals in the above figures are as follows:

[0028] 1. Cylinder;

[0029] 2. Cylinder support;

[0030] 3. Cylinder connecting screw;

[0031] 4. Limit block;

[0032] 5. Limiting support;

[0033] 6. Limiting connecting rod;

[0034] 7. Lifting hole;

[0035] 8. Limiting adapter connecting rod;

[0036] 9. Support legs;

[0037] 10. Limiting slide rail;

[0038] 11. Pump connection adapter;

[0039] 12. Air valve control mechanism;

[0040] 13. First trachea;

[0041] 14. Second trachea;

[0042] 15. Gas source import;

[0043] 16. Adapter plate;

[0044] 17. Pump shaft;

[0045] 18. Bearing housing;

[0046] 100. Pump bearing clearance detection device. Detailed Implementation

[0047] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are only for explaining the purpose of this utility model and should not be construed as limiting this utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, or it can be a connection within two elements, which can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] This invention provides a pump bearing clearance detection device, which can be used to detect the axial clearance of bearings installed on the pump shaft.

[0050] Please refer to the following for comprehensive information. Figures 1 to 2This application specification provides a pump bearing clearance detection device for detecting the axial clearance of a bearing mounted on a pump shaft. The device may include: a transition plate 16, which is sleeved on a bearing housing 18 outside the bearing to be tested, and has a central hole in its center for the pump shaft 17 to pass through; a mounting mechanism connected to the transition plate 16; and a cylinder 1 mounted on the mounting mechanism, the cylinder 1 having a first interface and a second interface. The cylinder 1 has a first air pipe 13 connected to its first interface and a second air pipe 14 connected to its second interface. A valve control mechanism 12 controls the flow of gas through the first and second air pipes 13 and 14 to drive the output shaft of the cylinder 1 to reciprocate linearly along the axial direction of the pump shaft 17. A pump connecting adapter 11 connects one end to the pump shaft 17 and the other end to the output shaft of the cylinder 1. A detection element (e.g., a dial indicator) is used to obtain the axial clearance of the bearing under test. The detection element may include a displacement sensor, which accurately measures the offset corresponding to the bearing automatically resetting after reaching its limit position.

[0051] The pump bearing clearance detection device provided in this application embodiment achieves precise docking between the detection equipment and the pump bearing housing 18 through the adapter plate 16, providing a stable installation and measurement foundation for the overall detection structure; the installation mechanism provides fixed support for the cylinder 1, ensuring that the output shaft of the cylinder 1 is axially aligned with the pump shaft 17; the air valve control mechanism 12 drives the output shaft of the cylinder 1 to reciprocate linearly along the pump shaft 17 by regulating the air intake and exhaust states of the two air pipes. This power is transmitted to the pump shaft 17 through the pump connection adapter 11, causing the bearing to move to its limit position. After the power is removed, the bearing automatically resets, and the axial clearance offset can be measured; the detection element can collect the bearing axial clearance value. The entire solution achieves targeted detection of the axial clearance of the pump shaft 17 bearing in the assembled state through the coordinated logic of fixing, driving, force transmission, and detection. This solves the problem of poor compatibility and inability to accurately detect the axial clearance of the pump shaft 17 bearing in the assembled state of existing general-purpose testing equipment. The coordinated design of core components ensures the stability of the testing process and lays the foundation for subsequent accurate testing. Compared with manual driving, the cylinder 1 driven by the air valve is easier to control the magnitude and direction of the force, reducing the impact of human operation on the testing accuracy.

[0052] In one embodiment, the mounting mechanism includes a cylinder support 2 and a support leg 9. The cylinder support 2 includes a mounting platform, and the middle of the mounting platform is provided with a mounting hole for the output shaft of the cylinder 1 to pass through. The support leg 9 is disposed between the mounting platform and the adapter plate 16.

[0053] In this embodiment, the mounting mechanism may include a cylinder support 2 and a support leg 9. The mounting platform of the cylinder support 2 has a mounting hole in the middle for the output shaft of the cylinder 1 to pass through. The diameter of the mounting hole is slightly larger than that of the output shaft of the cylinder 1, so as to limit and guide the output shaft of the cylinder 1 and ensure that the output shaft of the cylinder 1 moves only in the axial direction.

[0054] The support leg 9 connects the mounting platform and the adapter plate 16. By reasonably setting the length and distribution of the support leg 9, it is ensured that the output shaft of the cylinder 1 is precisely coaxial with the pump shaft 17 after installation, while reserving reasonable space for the subsequent installation of the adapter components and the limiting mechanism. Specifically, the length of the support leg 9 can be determined comprehensively based on the output shaft of the cylinder 1, the mounting mechanism, and the length of the pump connecting adapter 11 along the pump shaft 17. This application does not impose specific limitations on this.

[0055] In one embodiment, a limiting mechanism is provided between the pump connecting adapter 11 and the output shaft of the cylinder 1. The limiting mechanism includes: a limiting slide rail 10, which extends longitudinally along the axial direction of the pump shaft 17, with one end connected to the mounting platform and the other end connected to the adapter plate 16; a limiting support 5, which is slidably disposed on the limiting slide rail 10; and a connecting assembly, which is mounted on the limiting support 5 and connected to both the output shaft of the cylinder 1 and the pump connecting adapter 11.

[0056] In this embodiment, a limiting mechanism is added to the mounting mechanism. A limiting slide rail 10 extending axially along the pump shaft 17 limits the movement trajectory of the limiting support 5, allowing it to slide only axially. The adapter assembly is mounted on the limiting support 5, enabling power transmission between the cylinder 1 output shaft and the pump connection adapter 11. Simultaneously, the cooperation between the limiting support 5 and the slide rail constrains radial offset during power transmission, ensuring that the axial force output by the cylinder 1 is accurately applied to the pump shaft 17. This solves the problems of force loss and detection deviation caused by radial offset during power transmission. The guiding effect of the limiting mechanism further improves the coaxiality of the cylinder 1 output shaft and the pump shaft 17, making the bearing clearance offset more controllable and the detection data more accurate. The slidable limiting support 5 is adaptable to cylinder 1 drives with different strokes, improving the flexibility of the mechanism.

[0057] The limiting slide rail 10 can extend along the axial length of the pump shaft 17 and be fixed between the mounting platform and the adapter plate 16. The limiting support 5 can be a limiting plate with a certain thickness. An opening or groove can be provided near the outer edge of the limiting plate, through which it can be slidably fitted onto the limiting slide rail 10.

[0058] The adapter assembly may include a cylinder connecting screw 3, a limiting block 4, and a limiting connector arranged sequentially along the axial direction of the pump shaft 17. One end of the cylinder connecting screw 3 is connected to the output shaft of the cylinder 1, and the other end passes through the limiting block 4. One end of the limiting connector passes through the limiting block 4, can rotate relative to the limiting block 4 but cannot move radially relative to the limiting block 4, and the other end is connected to the pump connecting adapter 11.

[0059] In this embodiment, the adapter assembly can adopt an axial sequential connection structure of cylinder connecting screw 3, limiting block 4, and limiting connector to realize segmented power transmission of cylinder 1; cylinder connecting screw 3 is connected to the output shaft of cylinder 1 to transmit power to limiting block 4, and then to pump connecting adapter 11 through limiting connector; at the same time, the cooperation relationship between limiting connector and limiting block 4 is limited (rotatable but not radially movable), which ensures that power is transmitted axially and allows the limiting connector to rotate synchronously when pump shaft 17 rotates, avoiding damage to pump shaft 17 or adapter assembly due to rigid connection.

[0060] Overall, the segmented adapter assembly facilitates the replacement of compatible parts according to different pump shaft 17 specifications, improving the equipment's versatility. The limiting block 4 and its mating parts achieve a rotatable but non-radial-movable fit, balancing the stability of power transmission with the compatibility of pump shaft 17 rotation, avoiding component interference damage during testing, while ensuring radial positioning accuracy and further improving testing accuracy.

[0061] Specifically, the limiting connector may include a detachably connected limiting connecting rod 6 and a limiting adapter connecting rod 8. One end of the limiting connecting rod 6 passes through the limiting block 4 and can rotate circumferentially relative to the limiting block 4 but cannot move radially relative to the limiting block 4. The other end is connected to the limiting adapter connecting rod 8. One end of the limiting adapter connecting rod 8 is detachably connected to the limiting connecting rod 6, and the other end is detachably connected to the pump connecting adapter 11.

[0062] In this embodiment, the limiting connector is divided into a detachable limiting connecting rod 6 and a limiting adapter connecting rod 8. The limiting connecting rod 6 cooperates with the limiting block 4 (it can rotate circumferentially but cannot move radially) to ensure radial positioning and rotation compatibility. The limiting adapter connecting rod 8 is detachably connected to the limiting connecting rod 6 and the pump connecting adapter 11 respectively. The appropriate limiting adapter connecting rod 8 can be replaced according to the connection size of different pump shafts 17.

[0063] The detachable connection can be a threaded connection, but it can also be in other forms, such as snap-fit. Those skilled in the art may make other changes based on the technical essence of this application, but as long as the function and effect are the same as or similar to this application, they should be covered within the scope of protection of this application.

[0064] The aforementioned detachable segmented structure significantly improves the compatibility of the testing equipment with different models of pump shaft 17, eliminating the need to replace the entire adapter assembly and reducing equipment maintenance and usage costs. The detachable connection facilitates disassembly and repair while ensuring the stability of power transmission, thus balancing versatility and testing reliability.

[0065] In one embodiment, the limiting block 4 is detachably mounted on the limiting support 5. The limiting support 5 has opposing first and second surfaces along the axial direction of the pump shaft 17. The limiting block 4 includes a first limiting block located on one side of the first surface and a second limiting block located on one side of the second surface. A first limiting groove is formed in the first limiting block. A first engaging portion is radially protruded from the cylinder connecting screw 3. The first engaging portion is clearance-fitted with the first limiting groove and is rotatably mounted in the first limiting groove. A second limiting groove is formed in the second limiting block. A second engaging portion is radially protruded from the limiting connecting rod 6. The second engaging portion is clearance-fitted with the second limiting groove and is rotatably mounted in the second limiting groove.

[0066] In this embodiment, the limiting block 4 may include a first limiting block and a second limiting block that are detachably connected to the limiting support 5. By splitting the limiting block 4 into a detachable first limiting block and a second limiting block, which are respectively installed on both sides of the limiting support 5; by providing an annular first limiting groove in the first limiting block, which is clearance-fitted with the first engaging part of the cylinder connecting screw 3, the cylinder connecting screw 3 can be rotated and radially limited; similarly, the annular second limiting groove of the second limiting block is clearance-fitted with the second engaging part of the limiting connecting rod 6, which can be rotated and radially limited; the detachable limiting block 4 is designed to facilitate the installation and replacement of the engaging parts.

[0067] Specifically, the first limiting block and the second limiting block can be connected to the limiting support 5 by means of bolts or the like. The specific shape and structure of the first limiting block and the second limiting block can be the same or similar.

[0068] Taking the first limiting block as an example, it can be in the shape of a sleeve or a cover, with a first limiting groove formed inside. A first through hole communicating with the first limiting groove is provided in the middle for the cylinder connecting screw 3 to pass through. The cylinder connecting screw 3 has a first engaging part protruding radially, which can specifically be a circular boss provided at the end of the cylinder connecting screw 3.

[0069] In one embodiment, the cylinder 1 is a bidirectional cylinder, and the first air pipe 13 and the second air pipe 14 are both inlet and outlet air pipes.

[0070] In this embodiment, the cylinder 1 is a bidirectional cylinder 1, which enables the testing equipment to detect the bidirectional axial clearance of the bearing. Compared with unidirectional drive, the detection range is more comprehensive, and the complete test can be completed without disassembling and adjusting the direction of the equipment, thus improving the testing efficiency. In addition, the first air pipe 13 and the second air pipe 14 adopt inlet and outlet air pipes, which simplifies the air circuit structure, reduces the adjustment difficulty of the air valve control mechanism 12, and improves the ease of operation of the equipment.

[0071] Specifically, the air valve control mechanism 12 includes an air valve seat and an air valve switch. The air valve seat is connected to the first air pipe 13 and the second air pipe 14. The air valve seat is provided with an air inlet and an air outlet. The air valve switch is used to control the connection between the air inlet, the air outlet and the first air pipe 13 and the second air pipe 14.

[0072] In this embodiment, the valve seat is used to connect the two air pipes in a centralized manner. The air inlet on the valve seat is connected to an external air source and is used as the air source inlet 15. The exhaust port is used to discharge gas. The valve switch controls the connection between the air inlet, exhaust port and the two air pipes by switching the valve core position, thereby realizing the switching of the air intake and exhaust states of the two air pipes and precisely controlling the extension and retraction of the output shaft of cylinder 1.

[0073] In one embodiment, the adapter plate 16 is provided with multiple rings of connecting holes at radial intervals. The diameter and hole spacing of the multiple rings of connecting holes are different, and the multiple rings of connecting holes are used to adapt to bearing housings 18 with different outer diameters.

[0074] In this embodiment, by providing multiple rings of connecting holes at radial intervals on the adapter plate 16, with different hole diameters and hole spacings, during use, a suitable ring of connecting holes can be selected according to the outer diameter of the bearing housing 18 to be tested, and the adapter plate 16 can be fixed to the bearing housing 18 with bolts to achieve precise docking between the adapter plate 16 and bearing housings 18 of different specifications.

[0075] In one embodiment, the mounting mechanism is further provided with a lifting hole 7.

[0076] In this embodiment, a lifting hole 7 is provided on the installation mechanism. By cooperating with the lifting equipment (such as a crane or hoist) and the lifting hole 7, the entire testing equipment can be conveniently lifted to the corresponding position of the pump to be tested, thus completing the rapid positioning and installation of the equipment.

[0077] This application also provides a bearing clearance detection system, which mainly includes the above-mentioned pump bearing clearance detection device. By setting the pump bearing clearance detection device, the bearing clearance detection system can achieve the technical effects achieved by the implementation of the pump bearing clearance detection device. For details, please refer to the specific description of the above implementation, which will not be repeated here.

[0078] like Figure 3 In a specific scenario, the pump bearing clearance detection device 100 provided in this application embodiment can perform the following operation steps during actual use:

[0079] Step 1: Preparation of testing equipment and pump body:

[0080] Adjust the assembled pump, which is awaiting inspection and adjustment, to a testable state;

[0081] Select the appropriate pump connection adapter 11 based on the specifications of the pump shaft 17 of the pump to be tested.

[0082] Using the lifting hole 7 on the installation mechanism of the testing equipment, the testing equipment is hoisted to the corresponding position of the pump to be tested by the lifting equipment, the connection hole of the adapter plate 16 and the bearing box 18 are aligned, and the bolts are used to fix it, ensuring that the bolt tightening torque meets the equipment requirements.

[0083] Step 2: Connecting the testing equipment and coaxial calibration:

[0084] Connect the selected pump connection adapter 11 to the limit block 4 adapter rod;

[0085] Operate the air valve control mechanism 12 to initially adjust the position of the cylinder 1 so that the cylinder connecting screw 3, limit connecting rod 6, limit adapter connecting rod 8 and pump connecting adapter 11 connected in sequence at the output end of the cylinder 1 form a complete force transmission link.

[0086] Calibrate the coaxiality of the aforementioned power transmission link and the pump shaft 17 to ensure that they are axially aligned.

[0087] Step 3: Setting up and zeroing the testing equipment:

[0088] Install a calibrated dial indicator on the non-stressed end of pump shaft 17 and adjust its position.

[0089] Step 4: Axial force application and clearance detection:

[0090] Operate the air valve control mechanism 12 to control the air source to enter the cylinder 1 through the air pipe, so that the cylinder 1 generates a stable axial force.

[0091] The force is transmitted along the preset force transmission path: cylinder connecting screw 3, limit block 4, limit support 5, limit connecting rod 6, limit adapter connecting rod 8, pump connecting adapter 11, pump shaft 17.

[0092] Under the action of axial force, the axial clearance of the bearing shifts in the direction of force, causing the pump shaft 17 to generate axial displacement. When the pump shaft 17 moves to the limit position, the axial force of the cylinder 1 is removed, the dial indicator is returned to zero, and the bearing is automatically reset. After the bearing completes the reset, the reading displayed by the dial indicator in real time is the measured value of the axial clearance of the bearing.

[0093] Step 5: Clearance Adjustment and Acceptance Confirmation:

[0094] Compare the measured values ​​of the dial indicator with the standard values ​​of the bearing axial clearance specified in the pump design documents;

[0095] If the measured value does not meet the standard, adjust the clearance of the pump shaft bearing 17;

[0096] After adjustment, repeat the testing process in step 4 until the dial gauge reading meets the standard requirements, and the test is complete.

[0097] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0098] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from the others. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A pump bearing clearance detection device, characterized in that, The pump bearing clearance detection device is used to detect the axial clearance of a bearing mounted on a pump shaft. The pump bearing clearance detection device includes: The adapter plate is sleeved on the bearing housing outside the bearing to be tested, and the center of the adapter plate is provided with a central hole for the pump shaft to pass through. Installation mechanism, which is connected to the adapter plate; A cylinder is mounted on the mounting mechanism. The cylinder has a first interface and a second interface. The first interface is connected to a first air pipe, and the second interface is connected to a second air pipe. A gas valve control mechanism is used to control the gas flow state of the first gas pipe and the second gas pipe, so as to drive the output shaft of the cylinder to reciprocate linearly along the axial direction of the pump shaft. A pump connecting adapter is provided, one end of which is used to connect to the pump shaft, and the other end is connected to the output shaft of the cylinder for transmission. The testing component is used to obtain the axial clearance of the bearing to be tested.

2. The pump bearing clearance detection device as described in claim 1, characterized in that, The mounting mechanism includes a cylinder support and outriggers. The cylinder support includes a mounting platform, and the mounting platform has a mounting hole in the middle for the output shaft of the cylinder to pass through. The support leg is positioned between the mounting platform and the adapter plate.

3. The pump bearing clearance detection device as described in claim 2, characterized in that, A limit mechanism is provided between the pump connecting adapter and the output shaft of the cylinder, the limit mechanism comprising: A limiting slide rail extends longitudinally along the axial direction of the pump shaft, with one end of the limiting slide rail connected to the mounting platform and the other end connected to the adapter plate; A limiting support, wherein the limiting support is slidably mounted on the limiting slide rail; An adapter assembly is mounted on the limiting support and is connected to the output shaft of the cylinder and the pump connecting adapter, respectively.

4. The pump bearing clearance detection device as described in claim 3, characterized in that, The adapter assembly includes a cylinder connecting screw, a limiting block, and a limiting connector arranged sequentially along the axial direction of the pump shaft. One end of the cylinder connecting screw is connected to the output shaft of the cylinder, and the other end passes through the limiting block; One end of the limiting connector passes through the limiting block and can rotate relative to the limiting block but cannot move radially relative to the limiting block; the other end is connected to the pump connecting adapter.

5. The pump bearing clearance detection device as described in claim 4, characterized in that, The limiting connector includes a detachably connected limiting connecting rod and a limiting adapter connecting rod. One end of the limiting connecting rod passes through the limiting block and can rotate circumferentially relative to the limiting block but cannot move radially relative to the limiting block. The other end is connected to the limiting adapter connecting rod. One end of the limiting adapter connecting rod is detachably connected to the limiting connecting rod, and the other end is detachably connected to the pump connecting adapter.

6. The pump bearing clearance detection device as described in claim 5, characterized in that, The limiting block is detachably mounted on the limiting support, the limiting support having opposing first and second surfaces along the axial direction of the pump shaft, and the limiting block including a first limiting block located on one side of the first surface and a second limiting block located on one side of the second surface; A first limiting groove is formed in the first limiting block, and a first engaging part is radially protruding from the cylinder connecting screw. The first engaging part is clearance-fitted with the first limiting groove, and the first engaging part is rotatably installed in the first limiting groove. The second limiting block has a second limiting groove, and the limiting connecting rod has a second engaging part that protrudes radially. The second engaging part is in clearance fit with the second limiting groove, and the second engaging part is rotatably installed in the second limiting groove.

7. The pump bearing clearance detection device as described in claim 1, characterized in that, The cylinder is a two-way cylinder, and both the first air pipe and the second air pipe are inlet and outlet air pipes.

8. The pump bearing clearance detection device as described in claim 7, characterized in that, The air valve control mechanism includes an air valve seat and an air valve switch. The air valve seat is connected to the first air pipe and the second air pipe. The air valve seat is provided with an air inlet and an air outlet. The air valve switch is used to control the connection between the air inlet, the air outlet and the first air pipe and the second air pipe.

9. The pump bearing clearance detection device as described in claim 1, characterized in that, The adapter plate is provided with multiple rings of connecting holes at radial intervals. The diameter and spacing of the connecting holes are different, and the multiple rings of connecting holes are used to adapt to bearing housings with different outer diameters.

10. The pump bearing clearance detection device as described in claim 1, characterized in that, The detection component includes a displacement sensor, which is used to measure the offset corresponding to the automatic reset when the bearing moves to its limit position.

11. The pump bearing clearance detection device as described in claim 1, characterized in that, The installation mechanism is also equipped with lifting holes.

12. A bearing clearance detection system, characterized in that, The bearing clearance detection system includes the pump bearing clearance detection device according to any one of claims 1 to 11.

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