Universal floating oil seal vibration test device applied to vibration test bench

Abstract

The embodiment of the invention provides a universal floating oil seal vibration test device applied to a vibration test bench, and relates to the field of floating oil seal tests, and the universal floating oil seal vibration test device comprises a machine body, a rotating shaft is arranged in the machine body, the end part of the rotating shaft is connected with a motor through an elastic coupling, one side of the machine body is provided with a left end cover, and one end of the rotating shaft is connected with a right end cover; a rotating end cover is placed on the inner side of the right end cover, an oil seal seat is arranged at the right end of the machine body, motor torque is transmitted to the rotating shaft through an elastic coupler, the rotating shaft transmits the torque to the right end cover, the right end cover transmits the torque to the rotating end cover, the rotating end cover and the oil seal seat press the floating oil seal, and the rotating end cover drives a moving ring of the floating oil seal to rotate. The actual working environment of the equipment is simulated, and the elastic coupling is used as a torque bearing body, so that the concentricity deviation of the motor shaft and the rotating shaft can be greatly compensated, and the stability and reliability of the system are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of floating oil seal testing, and in particular to a universal floating oil seal vibration testing device applied to a vibration test bench. Background Art

[0002] Floating oil seal is a special form of mechanical seal. It is a compact mechanical seal developed to adapt to harsh working environment. It has the advantages of strong anti-pollution ability, wear resistance, impact resistance, reliable operation, automatic compensation of section wear, simple structure, etc. It is widely used in mining machinery and equipment such as coal mining machines. In order to explore the reasons why floating oil seals fail when coal mining machines are working, it is necessary to conduct vibration tests on floating oil seals.

[0003] Existing test devices all apply static loads or regularly changing loads to floating oil seals, and the test device structure is too complicated and the manufacturing cost is high. During the operation of the coal mining machine, the vibration load it is subjected to is disordered and chaotic. During the experimental stage, the simulation effect is quite different from the actual effect. Summary of the invention

[0004] The present application aims to at least solve one of the technical problems that the existing test devices in the prior art are all static loads or regularly changing loads on the floating oil seal, but during the operation of the coal mining machine, the vibration loads are disordered and chaotic, and the simulation effect is quite different from the actual effect. To this end, the present application proposes a universal floating oil seal vibration test device applied to a vibration test bench.

[0005] According to an embodiment of the present application, a universal floating oil seal vibration test device applied to a vibration test bench includes: The machine body is provided with a rotating shaft inside, the end of the rotating shaft is connected to the motor through an elastic coupling, and is connected to the output end of the motor. A left end cover is provided on one side of the machine body, and the rotating shaft and the elastic coupling use a flat key to transmit torque. One end of the rotating shaft is connected to the right end cover, and a rotating end cover is placed on the inner side of the right end cover. An end cover sealing ring is provided at the tail end of the rotating shaft to seal with the rotating end cover. An oil seal seat is provided at the right end of the machine body, and the dynamic floating seal ring and the static floating seal ring of the floating oil seal are respectively installed on the rotating end cover of the machine body and the upper end of the oil seal seat of the machine body; The right end cover comprises a cover plate body, the cover plate body and the rotating end cover are connected by a first cylindrical pin and an eighth screw, and the cover plate body and the rotating shaft are connected by a second cylindrical pin and a ninth screw.

[0006] Preferably, a distance adjustment pad is placed on the outer side of the rotating end cover, and the distance adjustment pad is composed of pickled thin steel plates of varying thicknesses.

[0007] Preferably, a base plate is provided under the machine body and the motor, a positioning vertical plate is provided on the outer surface of the base plate, a first terminal and a second terminal are mounted on the positioning vertical plate, a vibration sensor is mounted on the upper end of the base plate, a wiring groove is provided on the outer side of the vibration sensor, the device circuit is connected to the two connectors through the wiring groove, and the base plate is fixed to the horizontal slide table of the vibration test bench by a seventh screw.

[0008] Preferably, the machine body includes a machine cavity, a first deep groove ball bearing and a second deep groove ball bearing are arranged inside the machine cavity, a first air plug and a screw plug are respectively installed at the upper and lower ends of the machine cavity, a flange connected to the oil seal seat is provided on the outside of the machine cavity, and the oil seal seat is connected to the flange by a tenth screw.

[0009] Preferably, two sets of first oil seal bodies installed opposite to each other are arranged on the outer sides of the first deep groove ball bearing and the second deep groove ball bearing. The first oil seal bodies are arranged on the outer sides of the first deep groove ball bearing and the second deep groove ball bearing.

[0010] Preferably, the oil seal seat includes a shell, a second air plug and a screw plug are installed on the upper and lower parts of the shell, a first temperature sensor is arranged on one side of the shell, a third O-ring is arranged on the outside of the first temperature sensor, and a third terminal is arranged on one side of the shell.

[0011] Preferably, a cavity is provided inside the oil seal seat for installing a floating oil seal static ring, and a second temperature sensor and a third temperature sensor are installed at upper and lower ends of the floating oil seal static ring.

[0012] Preferably, an annular heating film is installed inside the oil seal seat, and the inner and outer rings of the annular heating film are both provided with a first O-ring and a second O-ring, and a sealing cover is connected on the outside.

[0013] Preferably, the rotating end cover comprises an end cover plate, the outer side of the end cover plate is provided with windows, a sealing gasket and organic glass are installed on the outer side of each window, and an oil stirring blade is installed on the inner side of the end cover plate.

[0014] Preferably, the left end cover includes a left cover plate, a fourth O-ring and a second oil seal are installed on the inner side of the left cover plate, an infrared speed sensor is installed on the outer side of the left cover plate, the infrared speed sensor is fixed to the upper end of the left cover plate by an L-shaped vertical plate and fastening screws, and an oil mark is installed on the opposite side.

[0015] The beneficial effects of the present application are as follows: the motor is connected to three-phase electricity, and the frequency converter is used to adjust to the corresponding frequency to obtain the target speed. A flat key is installed on the rotating shaft to transfer the torque to the rotating shaft through an elastic coupling. The rotating shaft is equipped with a second cylindrical pin to transfer the torque to the right end cover. The right end cover is also equipped with a first cylindrical pin to transfer the torque to the rotating end cover. The rotating end cover and the oil seal seat press the floating oil seal. When the rotating end cover rotates, the dynamic ring of the floating oil seal is driven to rotate, completing the work of the entire device. The variable frequency motor is used to drive the rotating shaft to rotate, driving the floating oil seal to operate, simulating the actual working environment of the equipment. At the same time, an elastic coupling is used as a torque carrier, which can greatly compensate for the concentricity deviation between the motor shaft and the rotating shaft, ensuring the stability and reliability of the system. The structure is simple and easy to install and maintain, which reduces the manufacturing cost and improves the test efficiency.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a universal floating oil seal vibration test device applied to a vibration test bench according to an embodiment of the present application; Figure 2 is a schematic diagram of a top view structure according to an embodiment of the present application; Figure 3 It is a schematic diagram of a half-section structure according to an embodiment of the present application.

[0019] Icons: 1. Protective cover; 2. Motor; 3. Fixed base; 301. Base plate; 302. First screw; 303. First terminal; 304. Positioning plate; 305. Second screw; 306. Second terminal; 307. Fifth screw; 308. Terminal slot; 309. Seventh screw; 310. Fourth screw; 311. Third screw; 312. Vibration sensor; 313. Sixth screw; 4. Elastic coupling; 5. Left end cover; 501. Left cover plate; 502, second oil seal; 503, fastening screw; 504, fourth O-ring; 505, infrared speed sensor; 506, L-shaped vertical plate; 507, oil mark; 6, machine body; 601, first deep groove ball bearing; 602, first breathable plug; 603, second deep groove ball bearing; 604, first oil seal body; 605, machine cavity; 606, tenth screw; 607, flange; 608, connecting seal ring; 609, screw plug; 7, oil seal seat; 7 01, shell; 702, second vent plug; 703, first O-ring; 704, second O-ring; 705, annular heating film; 706, third O-ring; 707, sealing cover; 708, first temperature sensor; 709, retaining ring; 710, screw plug; 711, third terminal; 8, rotating end cover; 801, oil stirring blade; 802, end cover plate; 803, sealing pad; 804, organic glass; 805, positioning screw; 9, distance 10. Adjustment pad; 10. Right end cover; 1001. First cylindrical pin; 1002. Eighth screw; 1003. Ninth screw; 1004. Second cylindrical pin; 1005. Cover body; 11. Oil collecting box; 12. Floating oil seal; 1201. Second temperature sensor; 1202. Third temperature sensor; 13. Rotating shaft; 1301. Flat key; 1302. End cover sealing ring; 14. Monitor; 15. Support tripod; 16. Operating table; 17. Computer. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0021] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] A universal floating oil seal vibration test device applied to a vibration test bench according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0029] like Figure 1-Figure 3 As shown, a universal floating oil seal vibration test device applied to a vibration test bench according to an embodiment of the present application includes a body 6, a rotating shaft 13 is arranged inside the body 6, the end of the rotating shaft 13 is connected to the motor 2 through an elastic coupling 4, and is connected to the output end of the motor 2, a left end cover 5 for sealing it is arranged on one side of the body 6, the rotating shaft 13 and the elastic coupling 4 use a flat key 1301 to transmit torque, one end of the rotating shaft 13 is connected to the right end cover 10, a rotating end cover 8 is placed on the inner side of the right end cover 10, an end cover sealing ring 1302 is arranged at the tail end of the rotating shaft 13 to seal with the rotating end cover 8, an oil seal seat 7 is arranged at the right end of the body 6, and the dynamic floating sealing ring and the static floating sealing ring of the floating oil seal 12 are respectively installed on the rotating end cover 8 of the body 6 and the upper end of the oil seal seat 7 of the body 6.

[0030] The right end cover 10 includes a cover body 1005 , which is connected to the rotating end cover 8 by a first cylindrical pin 1001 and an eighth screw 1002 , and is connected to the rotating shaft 13 by a second cylindrical pin 1004 and a ninth screw 1003 .

[0031] The motor 2 is connected to three-phase electricity, and the frequency converter is used to adjust the frequency to the corresponding frequency to obtain the target speed. The shaft 13 is equipped with a flat key 1301, and the torque is transmitted to the shaft 13 through the elastic coupling 4. The shaft 13 is equipped with a second cylindrical pin 1004 to transmit the torque to the right end cover 10. The right end cover 10 is also equipped with a first cylindrical pin 1001 to transmit the torque to the rotating end cover 8. The rotating end cover 8 and the oil seal seat 7 press the floating oil seal 12. When the rotating end cover 8 rotates, the dynamic ring of the floating oil seal 12 is driven to rotate, completing the work of the entire device. The variable frequency motor 2 is used to drive the shaft 13 to rotate, and the floating oil seal 12 is driven to operate, simulating the actual working environment of the equipment. At the same time, the elastic coupling 4 is used as the torque carrier, which can greatly compensate for the concentricity deviation between the motor 2 shaft and the shaft 13, ensuring the stability and reliability of the system. The structure is simple, easy to install and maintain, reducing the manufacturing cost, and improving the test efficiency.

[0032] The elastic coupling 4 can also be a homemade rubber elastic coupling.

[0033] A distance adjustment pad 9 is placed on the outside of the rotating end cover 8. The distance adjustment pad 9 is made of pickled thin steel plates of varying thicknesses. When the fitting distance of the floating oil seal 12 needs to be increased or decreased, the distance adjustment pad 9 can be increased or decreased to achieve the purpose. Moreover, the thickness of each pad is fixed, so adjusting the fitting distance is not only convenient but also accurate.

[0034] A base plate 301 is provided below the body 6 and the motor 2, and a positioning vertical plate 304 is provided on the outer surface of the base plate 301. A first 380V terminal 303 and a second 24V terminal 306 are installed on the positioning vertical plate 304, and the two connectors are fixed to the positioning vertical plate 304 by a first screw 302 and a second screw 305. A vibration sensor 312 is installed on the upper end of the base plate 301 and is fixed to the upper end of the base plate 301 by a third screw 311. A wiring groove 308 is provided on the outer side of the vibration sensor 312, and the wiring groove 308 is fixedly connected to the base plate 301 by a fourth screw 310. The device circuit is connected to the two connectors through the wiring groove 308. The motor 2 and the body 6 are respectively installed on the upper end of the base plate 301 by a fifth screw 307 and a sixth screw 313. The base plate 301 is fixed to the horizontal slide table of the vibration test bench by a seventh screw 309.

[0035] The machine body 6 includes a machine cavity 605, and a first deep groove ball bearing 601 and a second deep groove ball bearing 603 are arranged inside the machine cavity 605. A first air plug 602 and a screw plug 609 are respectively installed at the upper and lower ends of the machine cavity 605. A flange 607 connected to the oil seal seat 7 is arranged on the outer side of the machine cavity 605. The oil seal seat 7 is connected to the flange 607 by the tenth screw 606. A connecting sealing ring 608 is installed at the straight mouth of the flange 607. The arrangement of the first deep groove ball bearing 601 and the second deep groove ball bearing 603 can make the mechanical parts smoother during operation and less energy loss, thereby improving mechanical efficiency and reducing power consumption. It can withstand radial and axial loads at the same time, support the rotating shaft 13, and cope with various stress conditions during use. It has a simple structure and is easy to install, which makes it more convenient to install and repair mechanical equipment, saving time and cost.

[0036] Two sets of first oil seal bodies 604 installed opposite to each other are arranged on the outside of the first deep groove ball bearing 601 and the second deep groove ball bearing 603. The first oil seal bodies 604 arranged on the outside of the first deep groove ball bearing 601 and the second deep groove ball bearing 603 can separate the two independent inner cavities to facilitate the subsequent change of the oil amount in the cavity of the floating oil seal 12.

[0037] The oil seal seat 7 includes a shell 701, and a second air plug 702 and a screw plug 710 are installed on the upper and lower parts of the shell 701. A first temperature sensor 708 is arranged on one side of the shell 701. A third O-ring 706 for auxiliary sealing of the installation position is arranged on the outer side of the first temperature sensor 708. A third terminal 711 is arranged on one side of the shell 701. The first temperature sensor 708 is installed to the upper end of the oil seal seat 7 through threads, which can ensure that the temperature sensor is fixed when the device vibrates.

[0038] A cavity is provided inside the oil seal seat 7 for installing a floating oil seal static ring. A second temperature sensor 1201 and a third temperature sensor 1202 are installed at the upper and lower ends of the floating oil seal static ring. A retaining ring 709 is installed outside the cavity for sealing. The second temperature sensor 1201 and the third temperature sensor 1202 can be strong magnetic temperature sensors, so that the second temperature sensor 1201 and the third temperature sensor 1202 will not fall off or shift under vibration.

[0039] An annular heating film 705 is installed inside the oil seal seat 7. The inner and outer circles of the annular heating film 705 are provided with a first high-temperature resistant O-ring 703 and a second O-ring 704. A sealing cover 707 is connected to the outside. The annular heating film 705 provides heat energy. Since the heating film cannot directly contact the oil and the temperature is relatively high (can reach 200°C), two fluororubber O-rings are installed on the upper and lower parts respectively, and are pressed tightly with the sealing cover 707. A window is opened on the upper end of the sealing cover 707 for wiring. The annular heating film 705 is an annular body, which can heat the oil in the cavity more evenly.

[0040] The rotating end cover 8 includes an end cover plate 802, and a plurality of windows are provided on the outer side of the end cover plate 802. A sealing gasket 803 and organic glass 804 are installed on the outer side of each window. The end cover is fixed to the end cover using positioning screws 805, which can not only achieve sealing, but also observe the operation of the floating oil seal 12 inside when the device rotates. An oil stirring blade 801 is installed on the inner side of the end cover plate 802 to increase the movement of the oil and make the temperature of the entire oil more uniform.

[0041] The left end cover 5 includes a left cover plate 501, on the inner side of which a fourth O-ring 504 and a second oil seal 502 are installed, and on the outer side of the left cover plate 501 an infrared speed sensor 505 is installed, which is fixed to the upper end of the left cover plate 501 by an L-shaped vertical plate 506 and a fastening screw 503, and an oil mark 507 is installed on the opposite side.

[0042] A protective cover 1 is provided outside the test device to protect the upper equipment and operators. The protective cover 1 is installed on the upper end of the fixed base 3.

[0043] An oil receiving box 11 is placed below the machine body 6 for receiving leaked liquid.

[0044] A monitor 14 is placed outside the machine body 6 and mounted on a supporting tripod 15, and a computer 17 mounted on an operating table 16 is placed to control data.

[0045] Specifically, the working principle of the universal floating oil seal vibration test device applied to the vibration test bench is as follows: the motor 2 is connected to three-phase electricity, and the frequency converter is used to adjust to the corresponding frequency to obtain the target speed. The shaft 13 is equipped with a flat key 1301, and the torque is transmitted to the shaft 13 through the elastic coupling 4. The shaft 13 is equipped with a second cylindrical pin 1004 to transmit the torque to the right end cover 10. The right end cover 10 is also equipped with a first cylindrical pin 1001 to transmit the torque to the rotating end cover 8. The rotating end cover 8 and the oil seal seat 7 press the floating oil seal 12. When the rotating end cover 8 rotates, the dynamic ring of the floating oil seal 12 is driven to rotate, completing the work of the entire device. The variable frequency motor 2 is used to drive the shaft 13 to rotate, driving the floating oil seal 12 to operate, simulating the actual working environment of the equipment. At the same time, the elastic coupling 4 is used as the torque carrier, which can greatly compensate for the concentricity deviation between the motor 2 shaft and the shaft 13, ensuring the stability and reliability of the system. The structure is simple and easy to install and maintain, reducing the manufacturing cost and improving the test efficiency.

[0046] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0047] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A universal floating oil seal vibration test device used in a vibration test bench, characterized in that: include: The machine body is provided with a rotating shaft inside, the end of the rotating shaft is connected to the motor through an elastic coupling, and is connected to the output end of the motor. A left end cover is provided on one side of the machine body, and the rotating shaft and the elastic coupling use a flat key to transmit torque. One end of the rotating shaft is connected to the right end cover, and a rotating end cover is placed on the inner side of the right end cover. An end cover sealing ring is provided at the tail end of the rotating shaft to seal with the rotating end cover. An oil seal seat is provided at the right end of the machine body, and the dynamic floating seal ring and the static floating seal ring of the floating oil seal are respectively installed on the rotating end cover of the machine body and the upper end of the oil seal seat of the machine body; The right end cover comprises a cover plate body, the cover plate body and the rotating end cover are connected by a first cylindrical pin and an eighth screw, and the cover plate body and the rotating shaft are connected by a second cylindrical pin and a ninth screw.

2. The universal floating oil seal vibration test device for a vibration test bench according to claim 1, characterized in that: A distance adjustment pad is placed outside the rotating end cover, and the distance adjustment pad is composed of pickled thin steel plates of varying thicknesses.

3. The universal floating oil seal vibration test device for a vibration test bench according to claim 2 is characterized in that: A base plate is arranged below the machine body and the motor, a positioning vertical plate is arranged on the outer surface of the base plate, a first terminal and a second terminal are mounted on the positioning vertical plate, a vibration sensor is mounted on the upper end of the base plate, a wiring groove is arranged on the outer side of the vibration sensor, the device circuit is connected to the two connectors through the wiring groove, and the base plate is fixed to the horizontal slide table of the vibration test bench by a seventh screw.

4. The universal floating oil seal vibration test device for a vibration test bench according to claim 3 is characterized in that: The machine body includes a machine cavity, inside which a first deep groove ball bearing and a second deep groove ball bearing are arranged, a first air permeable plug and a screw plug are respectively installed at the upper and lower ends of the machine cavity, a flange connected to an oil seal seat is arranged on the outside of the machine cavity, and the oil seal seat is connected to the flange by a tenth screw.

5. The universal floating oil seal vibration test device for a vibration test bench according to claim 4, characterized in that: Two sets of first oil seal bodies installed opposite to each other are arranged on the outer sides of the first deep groove ball bearing and the second deep groove ball bearing. The first oil seal bodies are arranged on the outer sides of the first deep groove ball bearing and the second deep groove ball bearing.

6. The universal floating oil seal vibration test device for a vibration test bench according to claim 5, characterized in that: The oil seal seat includes a shell, a second vent plug and a screw plug are installed on the upper and lower parts of the shell, a first temperature sensor is arranged on one side of the shell, a third O-ring is arranged outside the first temperature sensor, and a third terminal is arranged on one side of the shell.

7. The universal floating oil seal vibration test device for a vibration test bench according to claim 6, characterized in that: The oil seal seat is provided with a cavity inside for installing a floating oil seal static ring. A second temperature sensor and a third temperature sensor are installed at the upper and lower ends of the floating oil seal static ring.

8. The universal floating oil seal vibration test device for use in a vibration test bench according to claim 7, characterized in that: An annular heating film is installed inside the oil seal seat, and the inner and outer circles of the annular heating film are both provided with a first O-ring and a second O-ring, and a sealing cover is connected on the outer side.

9. The universal floating oil seal vibration test device for use in a vibration test bench according to claim 8, characterized in that: The rotating end cover comprises an end cover plate, a window is arranged on the outer side of the end cover plate, a sealing gasket and organic glass are installed on the outer side of each window, and an oil stirring blade is installed on the inner side of the end cover plate.

10. The universal floating oil seal vibration test device used in a vibration test bench according to claim 9, characterized in that: The left end cover includes a left cover plate, a fourth O-ring and a second oil seal are installed on the inner side of the left cover plate, an infrared speed sensor is installed on the outer side of the left cover plate, the infrared speed sensor is fixed to the upper end of the left cover plate by an L-shaped vertical plate and fastening screws, and an oil mark is installed on the opposite side.

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