A super high speed rotating test apparatus

Abstract

The application relates to the field of rotation tests, in particular to a super-high-speed rotation test device which comprises a test box, a driving device and a test assembly, the driving device comprises a driving machine, the driving machine is connected in the test box, the test assembly comprises a test cylinder used for placing a test liquid, the test cylinder is located above the driving machine and is slidably connected in the test box in a vertical direction, a motor shaft of the driving machine is arranged towards the test cylinder, a through hole matched with the motor shaft of the driving machine is arranged at the bottom of the test cylinder, and a mounting assembly used for mounting an oil seal is detachably connected to the bottom of the test cylinder, so that different oil seals can be conveniently tested.

Description

Technical Field

[0001] This application relates to the field of rotational testing, and in particular to an ultra-high-speed rotational testing device. Background Technology

[0002] Oil seals are key components in various engineering machinery and vehicles. Their primary function is to seal against liquids such as lubricating oil. The effectiveness of the seal directly impacts the lubrication and lifespan of transmission components such as engines and gearboxes. During product design and manufacturing, durability tests can identify reliability issues in parts to facilitate mechanical improvements, while also measuring changes in wear on key components. Wear resistance tests for oil seals are typically conducted using a rotary testing machine.

[0003] Chinese patent CN202903475U discloses a high-speed rotary testing machine for oil seal testing, which uses electrical equipment and mechanical means to change the rotation speed to generate a rotation speed of 150,000 rpm, and completes the accuracy test at high speed.

[0004] Existing rotary testing machines can usually only test oil seals of the same type. If different types of oil seals need to be tested, the testing machine needs to be replaced, which causes inconvenience to the rotary testing of oil seals. Summary of the Invention

[0005] To facilitate testing of different oil seals, this application provides an ultra-high speed rotational testing device.

[0006] The ultra-high-speed rotary testing equipment provided in this application adopts the following technical solution:

[0007] An ultra-high-speed rotational testing device includes a test chamber, a drive unit, and a test assembly. The drive unit includes a drive motor connected inside the test chamber. The test assembly includes a test cylinder for holding a test liquid. The test cylinder is located above the drive motor and is slidably connected to the test chamber in a vertical direction. The motor shaft of the drive motor is oriented towards the test cylinder. The bottom of the test cylinder has a through hole corresponding to the motor shaft of the drive motor. The bottom of the test cylinder is detachably connected to a mounting assembly for installing an oil seal.

[0008] By adopting the above technical solution, mounting components adapted to different oil seals are manufactured. Through the detachable connection between the mounting components and the test cylinder, different oil seals are installed on the test cylinder, thereby facilitating the testing of different oil seals.

[0009] Optionally, the mounting assembly includes a connecting flange, on which a mounting hole is coaxially provided, the mounting hole being opposite to a through hole, and a groove for embedding an oil seal is provided on the side wall of the mounting hole away from the connecting flange. The connecting flange is threaded to the bottom of the test cylinder by bolts.

[0010] By adopting the above technical solution, the oil seal is embedded in the connecting flange, and then the connecting flange is connected to the test cylinder by bolts, thereby realizing the rapid installation of the oil seal.

[0011] Optionally, the bottom of the test cylinder is connected to a connecting column, and a connecting hole is coaxially provided on the connecting column. The connecting hole is coaxially provided and communicates with the through hole, and the diameter of the end of the mounting hole near the connecting flange is adapted to the outer diameter of the connecting column.

[0012] By adopting the above technical solution, the connecting flange is fitted onto the connecting column through the mounting hole, thereby achieving precise installation of the connecting flange.

[0013] Optionally, the drive motor is slidably connected to the test chamber in the horizontal direction via an adjustment assembly.

[0014] By adopting the above technical solution, the drive motor slides horizontally, so that the motor shaft on the drive motor is eccentrically connected to the oil seal, which facilitates the simulation test of some extreme states of eccentric installation between the oil seal and the motor shaft.

[0015] Optionally, a refrigeration device is also included, which is connected to the test chamber and is used to cool the rotor in the drive motor.

[0016] By adopting the above technical solution, the temperature of the drive motor is reduced through the cooling device, thus reducing the possibility of the drive motor malfunctioning due to excessive speed during the test.

[0017] Optionally, the mounting assembly includes a boss, a stop plate, and a pressure plate. The boss is fixedly connected to the bottom of the test chamber. A mounting groove is provided on the side wall of the boss at the end away from the test chamber. The mounting groove is coaxially arranged with the mounting hole, and the diameter of the mounting groove is larger than the diameter of the mounting hole. Multiple stop plates are arranged circumferentially around the axis of the mounting groove. The stop plates are slidably connected to the side wall of the mounting groove through a cooperating component. The cooperating component is used to drive the stop plates to move simultaneously toward or away from the axis of the mounting groove. The stop plates are used to clamp the oil seal in the mounting groove. The pressure plate is slidably connected to the boss. The pressure plate is used to press the oil seal against the mounting groove.

[0018] By adopting the above technical solution, the oil seal is placed between the abutment plates, and the abutment plates move towards the center of the mounting groove to press the oil seal into the mounting groove, and the oil seal is coaxially set with the mounting hole. Then, the pressure plate is moved so that the pressure plate presses the oil seal into the mounting groove from the end of the oil seal away from the mounting hole, which further reduces the possibility of the oil seal coming out of the mounting groove.

[0019] Optionally, an adjusting block is connected to the boss. The adjusting block is annular and coaxial with the boss. A sliding opening is provided on the inner sidewall of the adjusting block, and the sliding opening is vertically oriented. A rod hole is provided at the end of the boss facing the adjusting block. An adjusting rod is rotatably connected to the bottom of the rod hole. The adjusting rod is a lead screw, and a torsion spring is sleeved on the adjusting rod. The end of the adjusting rod away from the bottom of the rod hole passes through the adjusting block and is rotatably connected to the sidewall of the sliding opening near the ground. The adjusting rod and the adjusting block are rotatably engaged. A slider is threadedly connected to the adjusting rod. The slider is located inside the sliding opening and is slidably engaged with the sliding opening in a vertical direction. A stop rod is hinged to the slider. A torsion spring is sleeved on the hinge shaft between the stop rod and the slider. A pressure plate is hinged to the end of the stop rod away from the slider. A torsion spring is also sleeved on the hinge shaft between the pressure plate and the stop rod.

[0020] By adopting the above technical solution, the slider is moved so that it remains away from the bottom of the mounting groove. At this time, the pressure plate is located away from the center of the mounting groove, the torsion spring on the adjusting rod is in a compressed state, and the torsion spring on the hinge shaft between the pressure plate, the push rod, and the slider is in a natural state. After the oil seal is pushed into the mounting groove, the slider is released. Under the elastic action of the torsion spring on the adjusting rod, the torsion spring drives the adjusting rod to rotate, the slider moves towards the mounting groove, the push rod rotates away from the adjusting rod, and the pressure plate moves towards the center of the mounting groove, pressing the oil seal tightly into the mounting groove.

[0021] Optionally, the bottom of the mounting groove is provided with a receiving hole, the length direction of the receiving hole is set vertically, the bottom of the receiving hole is connected to a limit block by a compression spring, the limit plate is provided with a through hole, the boss is provided with a mounting cavity, the mounting cavity is connected to the rod hole and the receiving hole, the mounting cavity is provided with an insertion rod, the insertion rod passes through the mounting cavity, and a spring is sleeved on the insertion rod. When the compression spring is in its natural state, one end of the limit block passes through the receiving hole and is located in the mounting groove, one end of the insertion rod is set with a round head and abuts against the side wall of the limit block, the through hole is located at the end of the insertion rod away from the compression spring, at this time the spring is in a compressed state, and the other end of the insertion rod is inserted into the adjusting rod.

[0022] By adopting the above technical solution, when the oil seal is inserted into the mounting groove, the oil seal pushes the limiting block towards the bottom of the receiving hole. The through hole is opposite to the insertion rod. One end of the insertion rod is inserted into the through hole under the action of the spring, and the other end is disengaged from the adjusting rod. Under the elastic action of the torsion spring on the adjusting rod, the torsion spring drives the adjusting rod to rotate. The pressure plate moves to a position opposite to the oil seal and presses the oil seal into the mounting groove. When it is necessary to remove the oil seal, first move the slider away from the mounting groove. The slider moves and drives the adjusting rod to rotate. The torsion spring on the adjusting rod is tightened. After the oil seal is removed, under the action of the compression spring, the limiting block pops out of the receiving hole, the insertion rod moves out of the through hole and abuts against the limiting block, and the insertion rod inserts into the adjusting rod to lock the adjusting rod.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Fabricate mounting components adapted to different oil seals. Through the detachable connection between the mounting components and the test cylinder, different oil seals can be installed on the test cylinder, thereby facilitating the testing of different oil seals;

[0025] 2. Slide the drive motor horizontally so that the motor shaft on the drive motor is eccentrically inserted with the oil seal, thereby facilitating the simulation test of some extreme states of eccentric installation between the oil seal and the motor shaft;

[0026] 3. By using a cooling device to cool the drive motor, the possibility of the drive motor malfunctioning due to excessive speed during testing is reduced. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the overall structure of an ultra-high-speed rotating test device in Embodiment 1 of this application;

[0028] Figure 2 This is a schematic diagram illustrating the positional relationship between the test cylinder and the connecting flange in Embodiment 1 of this application;

[0029] Figure 3 This is a schematic diagram illustrating the positional relationship between the boss and the test cylinder in Embodiment 2 of this application;

[0030] Figure 4 This is a schematic diagram illustrating the positional relationship between the adjusting rod and the boss in Embodiment 2 of this application;

[0031] Figure 5 Used to illustrate Figure 4 Enlarged view of part A showing the positional relationship between the middle insertion rod and the adjusting rod.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Test chamber; 2. Chamber door; 3. Mounting base; 4. First connecting base; 5. Drive motor; 6. Screw; 7. Slide; 8. Rotary handle; 9. Spring collet; 10. Second connecting base; 11. Test cylinder; 12. Sealing cover; 13. Pressure gauge; 14. Air pump; 15. Lifting base; 16. Drain pipe; 17. Base platform; 18. Connecting column; 19. Connecting flange; 20. Boss; 21. Mounting hole; 22. Groove; 23. Cooling water tank; 24. Water inlet pipe; 25. Water outlet pipe; 26. Control panel; 27. Mounting slot; 28. Support plate; 29. ​​Pressure plate; 30. Slide rod; 31. Adjusting screw; 32. Adjusting block; 33. Sliding port; 34. Adjusting rod; 35. Torsion spring; 36. Slider; 37. Support rod; 38. Limiting groove; 39. Connecting rod; 40. Receiving hole; 41. Limiting block; 42. Insert rod; 43. Spring; 44. Mounting cavity; 45. Spring groove; 46. Block; 47. Arc groove; 48. Compression spring. Detailed Implementation

[0034] This application discloses an ultra-high speed rotational testing device.

[0035] Example 1

[0036] Reference Figure 1 An ultra-high speed rotational testing device includes a test chamber 1, a drive unit, and test components.

[0037] Reference Figure 1 The test chamber 1 is connected to a door 2, and a mounting base 3 is fixedly connected inside the test chamber 1. The mounting base 3 is vertically arranged. The side walls of the test chamber 1 are made of transparent material. Preferably, the side walls of the test chamber 1 can be made of sound-insulating material.

[0038] Reference Figure 1 The drive unit includes a first connecting seat 4, a drive motor 5, and an adjustment assembly. The first connecting seat 4 is fixedly connected to the side wall of the mounting base 3 facing the door 2. The adjustment assembly includes a screw 6 and a handle 8. The screw 6 is axially arranged in the horizontal direction and is rotatably connected to the first connecting seat 4. The end of the screw 6 passes through the first connecting seat 4 and is connected to the handle 8. A slide block 7 is threaded onto the screw 6. The side wall of the slide block 7 abuts against the first connecting seat 4, and the slide block 7 slides along the axial direction of the screw 6. The drive motor 5 is fixedly connected to the slide block 7. The drive motor 5 is a continuously variable speed motor. The motor shaft of the drive motor 5 is detachably connected to the drive motor 5 through a spring collet 9. A frequency converter for adjusting its speed is connected to the drive motor 5.

[0039] Reference Figure 1The test assembly includes a second connecting seat 10 and a test cylinder 11. A lifting seat 15 is slidably connected to the second connecting seat 10 in the vertical direction. The lifting seat 15 is also connected to the second connecting seat 10 through an adjustment assembly. A screw 6 is rotatably connected to the second connecting seat 10. The axial direction of the screw 6 on the second connecting seat 10 is set in the vertical direction. The lifting seat 15 is threadedly connected to the screw 6 on the second connecting seat 10.

[0040] Reference Figure 1 The test cylinder 11 is fixedly connected to the lifting base 15. The test cylinder 11 contains a cavity for containing the test liquid. A sealing cap 12 is detachably connected to the top of the test cylinder 11 via a quick-release buckle. A pressure gauge 13 and an air pump 14 are connected to the sealing cap 12. A heating tube for heating the cavity is installed inside the test cylinder 11. The inner wall of the test cylinder 11 is made of corrosion-resistant material, thus facilitating the testing of different media.

[0041] Reference Figure 1 The bottom of the test cylinder 11 is connected to a through hole for connecting the motor shaft of the drive motor 5, an installation assembly for installing an oil seal, and a drain pipe 16, on which a valve is connected.

[0042] Reference Figure 1 and Figure 2 The bottom of the test cylinder 11 is connected to a base platform 17. The end of the base platform 17 away from the test cylinder 11 is coaxially connected to a connecting column 18. The diameter of the connecting column 18 is smaller than the diameter of the base platform 17. Both the base platform 17 and the connecting column 18 are coaxially provided with connecting holes. The connecting holes and the through holes are coaxially provided and connected.

[0043] Reference Figure 1 and Figure 2 The mounting assembly includes a connecting flange 19 and a boss 20. The boss 20 is coaxially connected to the connecting flange 19 and is integrally formed. A mounting hole 21 is coaxially provided on the boss 20, opposite to the connecting hole and through hole. The mounting hole 21 penetrates both the boss 20 and the connecting flange 19. A groove 22 for embedding an oil seal is provided on the side wall of the mounting hole 21 away from the connecting flange 19. The groove 22 is spaced apart from the end face of the boss 20 away from the connecting flange 19. The diameter of the end of the mounting hole 21 near the connecting flange 19 is adapted to the outer diameter of the connecting column 18. The connecting flange 19 is threadedly connected to the base 17 via bolts. A sensor is connected to the end face of the boss 20 away from the connecting flange 19 near the mounting hole 21. The sensor is used to detect oil seal leakage.

[0044] Reference Figure 1An ultra-high-speed rotating testing device further includes a refrigeration device, which includes a refrigeration water tank 23, an inlet pipe 24, and an outlet pipe 25. The bottom of the test chamber 1 is connected to a refrigeration chamber, and the opening of the refrigeration chamber and the door 2 are located on the same side of the test chamber 1. The refrigeration water tank 23 is connected inside the refrigeration chamber. The inlet pipe 24 and the outlet pipe 25 are connected to the refrigeration water tank 23. The ends of the inlet pipe 24 and the outlet pipe 25 away from the refrigeration water tank 23 pass through the refrigeration chamber and the test chamber 1 and are connected to the drive motor 5. The inlet pipe 24 and the outlet pipe 25 are both flexible hoses. The drive motor 5 is equipped with circulating water. The inlet pipe 24, the outlet pipe 25, the refrigeration water tank 23 and the drive motor 5 form a water circulation loop. The water output from the refrigeration water tank 23 cools the rotor in the drive motor 5.

[0045] Reference Figure 1 The test chamber 1 is connected to a control panel 26, which is electrically connected to the drive motor 5 and the sensor. The control panel 26 is used to record the operating parameters of the drive motor 5, such as the rotation speed, running time and frequency. When the sensor detects a leak, the control panel 26 controls the drive motor 5 to shut down and sounds an alarm.

[0046] The implementation principle of Embodiment 1 of this application is as follows:

[0047] The oil seal is embedded in the connecting flange 19, and then the connecting flange 19 is connected to the test cylinder 11 by bolts. The handle 8 on the first connecting seat 4 is rotated to adjust the relative position between the motor shaft of the drive motor 5 and the oil seal. Then, the handle 8 on the second connecting seat 10 is rotated to move the lifting seat 15, so that the motor shaft of the drive motor 5 penetrates the oil seal and inserts into the cavity. Test fluid is then added to the cavity. The cavity is pressurized, maintained, or evacuated using the air pump 14. The drive motor 5 is started, driving the motor shaft to rotate, thus facilitating the testing of the oil seal's durability sealing performance. Appropriate fixtures are made for different oil seals. Different oil seals are installed on the test cylinder 11 through a detachable connection between the fixture and the test cylinder 11, thus facilitating the testing of different oil seals.

[0048] Example 2

[0049] Reference Figure 3 and Figure 4 The difference from Embodiment 1 is that a mounting groove 27 is provided on the side wall of the end of the boss 20 away from the connecting flange 19. The mounting groove 27 is coaxially arranged with the mounting hole 21, and the diameter of the mounting groove 27 is larger than the diameter of the mounting hole 21.

[0050] Reference Figure 3 and Figure 4The mounting assembly also includes abutment plate 28 and pressure plate 29. Multiple abutment plates 28 are provided, and the abutment plates 28 are arranged circumferentially around the axis of the mounting groove 27. The abutment plates 28 are slidably connected to the side wall of the mounting groove 27 through a cooperating component. The number of abutment plates 28 is set to an even number. In this embodiment, there are two abutment plates 28.

[0051] Reference Figure 3 and Figure 4 The cooperating components include a slide rod 30 and an adjusting screw 31. The slide rod 30 is connected to the side walls of two abutments 28 that are far apart from each other. The slide rod 30 is arranged radially along the mounting groove 27. The slide rod 30 passes through the side wall of the mounting groove 27 and is connected to a connecting rod 39. The boss 20 is provided with a receiving cavity for the connecting rod 39 to slide radially along the boss 20. The length direction of the connecting rod 39 is perpendicular to the length direction of the slide rod 30. The connecting rod 39 is arranged horizontally. The adjusting screw 31 is rotatably connected to the side wall of the boss 20. The threads at both ends of the adjusting screw 31 are turned in opposite directions. The axial direction of the adjusting screw 31 is arranged radially along the mounting groove 27. The connecting rod 39 is threadedly connected to both ends of the adjusting screw 31.

[0052] Reference Figure 3 , Figure 4 and Figure 5 An adjusting block 32 is integrally connected to the boss 20. The adjusting block 32 is ring-shaped and coaxial with the boss 20. A sliding port 33 is provided on the inner side wall of the adjusting block 32. The sliding port 33 is symmetrically arranged with respect to the axis of the adjusting block 32 and is opposite to the abutment plate 28. The sliding port 33 is arranged in the vertical direction. A rod hole is provided at the end of the boss 20 facing the adjusting block 32. An adjusting rod 34 is rotatably connected to the bottom of the rod hole. The adjusting rod 34 is a lead screw. A torsion spring 35 is sleeved on the adjusting rod 34. One end of the torsion spring 35 is fixedly connected to the bottom of the rod hole, and the other end is fixedly connected to the adjusting rod 34. The end of the adjusting rod 34 away from the bottom of the rod hole passes through the adjusting block 32 and is rotatably connected to the side wall of the sliding port 33 near the ground. The adjusting rod 34 and the adjusting block 32 are rotatably engaged. A slider 36 is threaded onto the adjusting rod 34. The slider 36 is located inside the sliding port 33 and slides vertically with the sliding port 33. A stop rod 37 is hinged to the slider 36. A torsion spring 35 is sleeved on the hinge shaft between the stop rod 37 and the slider 36. A pressure plate 29 is hinged to the end of the stop rod 37 away from the slider 36. A torsion spring 35 is also sleeved on the hinge shaft between the pressure plate 29 and the stop rod 37. A limit groove 38 is provided at the end of the pressure plate 29 away from the stop rod 37. A guide groove is provided on the opposite side wall of the limit groove 38. A limit rod is connected to the end of the stop plate 28 away from the connecting flange 19. The limit rod is located inside the limit groove 38. The end of the limit rod is located inside the guide groove and slides with the guide groove.

[0053] Reference Figure 4 and Figure 5The bottom of the mounting groove 27 is provided with a receiving hole 40, the length of which is set vertically. The bottom of the receiving hole 40 is connected to a limiting block 41 via a compression spring 48. A through hole is provided on the limiting plate. A mounting cavity 44 is provided inside the boss 20. The mounting cavity 44 is connected to the rod hole and the receiving hole 40. An insert rod 42 is provided inside the mounting cavity 44. The insert rod 42 passes through the mounting cavity 44. A spring 43 is sleeved on the insert rod 42. One end of the spring 43 is fixedly connected to the side wall of the mounting cavity 44, and the other end is connected to the insert rod 42. When the compression spring 48 is in its natural state, one end of the limiting block 41 passes through the receiving hole 40 and is located inside the mounting groove 27, and the other end is located inside the receiving hole 40. One end of the insert rod 42 abuts against the side wall of the limiting block 41. The through hole is located at the end of the insert rod 42 away from the compression spring 48. At this time, the spring 43 is in a compressed state. The other end of the insert rod 42 is inserted into the adjusting rod 34. The end of the insert rod 42 is rounded.

[0054] Reference Figure 4 On the side wall of the mounting hole 21, there are spring grooves 45 at opposite positions. The bottom of the spring grooves 45 is inclined towards the connecting flange 19. A compression spring 48 is also connected to the bottom of the spring grooves 45. A block 46 is connected to the end of the compression spring 48 away from the bottom of the spring grooves 45. The block 46 is slidably connected to the boss 20 along the length of the spring grooves 45. The side walls of the blocks 46 that are close to each other are vertically arranged. A plug is connected to the side wall of one block 46 facing the other block 46. The length of the plug is consistent with the length of the spring grooves 45. A slot is provided on the other end of the block 46. The slot and the plug are inserted and matched. A top groove is provided on the side wall of the block 46 facing the drive motor 5 away from the compression spring 48. When the compression spring 48 at the bottom of the spring grooves 45 is in its natural state and the two blocks 46 abut against each other, the two top grooves form an arc groove 47.

[0055] The implementation principle of Embodiment 2 of this application is as follows:

[0056] When the oil seal is inserted into the mounting groove 27, the oil seal pushes the limiting block 41 toward the bottom of the receiving hole 40. The through hole is opposite to the insertion rod 42. One end of the insertion rod 42 is inserted into the through hole under the action of the spring 43, and the other end is disengaged from the adjusting rod 34. Under the elastic action of the torsion spring 35 on the adjusting rod 34, the torsion spring 35 drives the adjusting rod 34 to rotate. The pressure plate 29 moves to a position opposite to the oil seal and presses the oil seal into the mounting groove 27. Then, the adjusting screw 31 is rotated so that the abutment plates 28 move closer to each other. The oil seal is clamped in the mounting groove 27. When the oil seal needs to be removed, the slider 36 is moved away from the mounting groove 27. The movement of the slider 36 drives the adjusting rod 34 to rotate, and the torsion spring 35 on the adjusting rod 34 is tightened. After the oil seal is removed, under the action of the compression spring 48, the limiting block 41 pops out of the receiving hole 40, the insert rod 42 moves out of the through hole and abuts against the limiting block 41, the insert rod 42 is inserted into the adjusting rod 34 to lock the adjusting rod 34, and the abutment plate 28 is rotated in the opposite direction to remove the oil seal from the mounting groove 27.

[0057] When the test cylinder 11 is separated from the drive motor 5, the two blocking blocks 46 approach each other and abut against each other, and the insert block is inserted into the slot, thereby sealing the mounting hole 21 and reducing the possibility of liquid leakage inside the test cylinder 11. After the oil seal is installed, when the test cylinder 11 moves toward the drive motor 5, the motor shaft of the drive motor 5 abuts against the arc groove 47. Under the pushing of the motor shaft, the two blocking blocks 46 move away from each other and move toward the spring groove 45.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-speed rotational testing device, comprising a test chamber (1), a driving device, and a testing assembly, wherein the driving device includes a drive motor (5) connected inside the test chamber (1), and the testing assembly includes a test cylinder (11) for holding a test liquid, the test cylinder (11) being located above the drive motor (5) and slidably connected in the vertical direction inside the test chamber (1), the motor shaft of the drive motor (5) being oriented towards the test cylinder (11), characterized in that: The bottom of the test cylinder (11) is provided with a through hole that is the same as the motor shaft that connects to the drive machine (5), and the bottom of the test cylinder (11) is detachably connected with an installation assembly for installing an oil seal. The mounting assembly includes a boss (20), abutment (28), and pressure plate (29). The boss (20) is fixedly connected to the bottom of the test chamber (1). A mounting groove (27) is provided on the side wall of the end of the boss (20) away from the test chamber (1). The mounting groove (27) is coaxially arranged with the mounting hole (21). The diameter of the mounting groove (27) is larger than the diameter of the mounting hole (21). Multiple abutment plates (28) are arranged around the axis of the mounting groove (27). The abutment plates (28) are slidably connected to the side wall of the mounting groove (27) through a cooperating assembly. The cooperating assembly is used to drive the abutment plates (28) to move towards or away from the axis of the mounting groove (27) at the same time. The abutment plates (28) are used to clamp the oil seal in the mounting groove (27). The pressure plate (29) is slidably connected to the boss (20). The pressure plate (29) is used to press the oil seal into the mounting groove (27). An adjusting block (32) is connected to the boss (20). The adjusting block (32) is ring-shaped and coaxial with the boss (20). A sliding opening (33) is provided on the inner side wall of the adjusting block (32). The sliding opening (33) is arranged vertically. A rod hole is provided at the end of the boss (20) facing the adjusting block (32). An adjusting rod (34) is rotatably connected to the bottom of the rod hole. The adjusting rod (34) is a lead screw. A torsion spring (35) is sleeved on the adjusting rod (34). The end of the adjusting rod (34) away from the bottom of the rod hole passes through the adjusting block (32) and connects with the sliding opening. (33) The side wall near the ground is rotatably connected. The adjusting rod (34) is rotatably engaged with the adjusting block (32). A slider (36) is threadedly connected to the adjusting rod (34). The slider (36) is located inside the sliding port (33) and slides vertically with the sliding port (33). A stop rod (37) is hinged to the slider (36). A torsion spring (35) is sleeved on the hinge shaft between the stop rod (37) and the slider (36). The pressure plate (29) is hinged to the end of the stop rod (37) away from the slider (36). A torsion spring (35) is also sleeved on the hinge shaft between the pressure plate (29) and the stop rod (37).

2. The ultra-high speed rotating testing equipment according to claim 1, characterized in that: The bottom of the mounting groove (27) is provided with a receiving hole (40), the length direction of the receiving hole (40) is set in the vertical direction, the bottom of the receiving hole (40) is connected to a limit block (41) by a compression spring (48), the limit plate is provided with a through hole, the boss (20) is provided with a mounting cavity (44), the mounting cavity (44) is connected to the rod hole and the receiving hole (40), the mounting cavity (44) is provided with a plug rod (42), and the plug rod (42) is installed through the hole. The cavity (44) has a spring (43) fitted on the insertion rod (42). When the compression spring (48) is in its natural state, one end of the limiting block (41) passes through the receiving hole (40) and is located in the mounting groove (27). One end of the insertion rod (42) abuts against the side wall of the limiting block (41). The through hole is located at the end of the insertion rod (42) away from the compression spring (48). At this time, the spring (43) is in a compressed state, and the other end of the insertion rod (42) is inserted into the adjusting rod (34).

3. The ultra-high-speed rotating testing equipment according to claim 1, characterized in that: It also includes a refrigeration device connected to the test chamber (1) and used to cool the rotor in the drive unit (5).

Images