Durability test bench for working life of floating oil seal

Abstract

The invention provides a floating oil seal service life endurance test bench, which belongs to the technical field of mechanical sealing, and comprises a rack, a workbench is arranged on the rack, a floating seal tool seat is arranged on the workbench, one end of the floating seal tool seat is a loading end, and the loading end is connected with a loading assembly; the other end is a driving end which is connected with a driving assembly; an angle adjusting assembly is arranged in the loading assembly and can adjust the included angle between the loading end and the driving end, and a running-in abrasion service life durability test under the condition that an included angle exists between two shafts sealed by the floating oil seal is simulated. According to the invention, the angle adjusting assembly is arranged in the loading assembly, the angle adjusting assembly can adjust the included angle between the loading end and the driving end, and finally, the driving assembly drives rotation, and loading is carried out through the loading assembly. The running-in wear service life durability test under the condition that an included angle exists between two shafts sealed by the floating oil seal under a real working condition is simulated, and the test effect is better.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical seals, and in particular relates to a floating oil seal working life durability test bench. Background Art

[0002] Floating face seals, one solution to sealing problems in harsh working conditions, rely on paired metal sealing rings (typically with spherical or conical end faces) to achieve dynamic contact and automatic wear compensation of the sealing end faces, supported by the elasticity of an axial floating compensation mechanism (such as a high-performance rubber O-ring). Compared to earlier static seals with flat contact, advanced spherical end face sealing technology creates closed circular line contact or narrow band contact, significantly optimizing the formation and distribution of the lubricating film in the contact area, effectively reducing frictional power consumption and interface temperature rise, while also significantly suppressing leakage paths, significantly improving the seal's durability and environmental adaptability. It has now become the mainstream technical solution for end face sealing in heavy machinery.

[0003] Based on the development of floating oil seals, conducting working life durability tests on floating oil seals in the laboratory has become a necessary process for the research and development of floating oil seals. Existing floating oil seal working life durability test devices, such as a floating oil seal simulated working condition test equipment with application number 202010255214.9, include a mechanical part and an electrical part. The mechanical part includes a workpiece test area, a fixed tool and a rotating tool on the workbench. The electrical part includes a computer, a display measurement control part, a torque sensor and a photoelectric encoder. The middle position of the workbench is the workpiece test area. The fixed tool and the rotating tool are respectively arranged on both sides of the workpiece test area. The floating oil seal assembly is respectively arranged and installed on the fixed tool and the rotating tool. The fixed tool is fixed on the axial loading device, and the rotating tool is fixed on the rotary drive device. A protective cover is provided on the workpiece test area. A temperature sensor, an oil leakage alarm sensor and an oil receiving pan are provided in the workpiece test area. Although the device can quickly carry out floating oil seal simulated working condition tests and meet the friction and wear tests of floating oil seal sealing products and the life tests of floating oil seals, it still has the following shortcomings: In actual tests, floating oil seals are often not tightly fitted, and it is necessary to simulate actual working conditions to conduct running-in wear, working life and durability tests under different shafts and a certain angle between the two shafts. Summary of the Invention

[0004] In order to solve the above problems in the prior art, a floating oil seal working life durability test bench is proposed.

[0005] The technical solution to the technical problem solved by the present invention is: a floating oil seal working life durability test bench, comprising a frame, a workbench provided on the frame, a floating seal fixture seat provided on the workbench, one end of the floating seal fixture seat is a loading end, the loading end is connected to the loading component; the other end is a driving end, the driving end is connected to the driving component; an angle adjustment component is provided in the loading component, the angle adjustment component can adjust the angle between the loading end and the driving end, simulating a running-in wear working life durability performance test under the condition that there is an angle between the loading end and the driving end of the floating oil seal.

[0006] Preferably, the loading assembly includes an axial loading seat, the bottom of the axial loading seat is connected to the axial guide block, and the corresponding workbench is connected to the axial guide rail. The axial loading seat can move axially along the axial guide rail, and the bottom of the axial loading seat is driven to move by the pressurizing assembly; the inner wall of the axial loading seat is connected to the vertical guide rail, and the vertical guide rail is slidingly connected to the vertical guide block, and the vertical guide block is connected to the vertical moving seat, and the vertical moving seat is rotatably connected to the angle adjustment assembly. An axial loading shaft is provided in the angle adjustment assembly, one end of the axial loading shaft is rotatably connected in the angle adjustment assembly, and the other end is connected to the loading end and can rotate with the loading end.

[0007] Preferably, the top of the loading seat is rotatably connected to the vertical adjustment dial, the bottom of the vertical adjustment dial is connected to the vertical drive screw, and a vertical screw hole is opened at the top of the corresponding vertical moving seat. The vertical adjustment of the vertical moving seat is achieved by rotating the vertical adjustment dial to adjust the distance that the vertical drive screw extends into the vertical screw hole.

[0008] Preferably, the angle adjustment assembly includes a rotating seat, with rotating shafts connected to both sides of the rotating seat, and a rotating hole is opened on the corresponding axial loading seat, and the rotating shaft is inserted into the rotating hole and can rotate along the rotating hole; an axial loading shaft is axially arranged in the rotating seat, one end of the axial loading shaft extends out of the rotating seat, and the other end is rotatably connected to the inner wall of the rotating seat; the end of the rotating shaft on one side is connected to a driving member, and the driving member can drive the rotating shaft to rotate, thereby realizing the rotation of the axial loading shaft.

[0009] Preferably, the driving member is a worm gear reducer, the output end of the worm gear reducer is connected to the rotating shaft, and the output end is connected to the angle adjustment rod. Rotating the angle adjustment rod can drive the rotating shaft to rotate so that the angle between the loading end and the driving end changes.

[0010] Preferably, the end of the rotating shaft that is not connected to the driving member extends out of the rotating hole and is connected to the angle locking disk. The angle locking disk has several outer locking holes along the circumference, and several inner locking holes are opened on the corresponding vertical movable seat. The locking bolt passes through the outer locking hole and the inner locking hole in turn to lock the rotating shaft, thereby realizing the angle locking between the loading end and the driving end.

[0011] Preferably, the pressurizing component includes a loading motor fixed on the frame, the output shaft of the loading motor is connected to the loading reducer, the output end of the loading reducer is connected to a small synchronous pulley, the first synchronous pulley and the second synchronous pulley are connected by a synchronous belt transmission, and the second synchronous belt is rotatably connected to the workbench; the workbench is also axially provided with a screw, the screw is connected to a loading block, the loading block is fixed to the bottom of the axial loading seat, the end of the screw is driven to connect to the second synchronous belt, and the rotation of the screw drives the loading block to move axially to realize loading.

[0012] Preferably, a loading bracket is sleeved on the lead screw, a bearing is provided in the loading bracket, and the loading bracket can support the lead screw; a loading motor mounting hole is provided at the bottom of the loading bracket, and the loading motor is fixed in the mounting hole.

[0013] Preferably, the driving assembly includes a driving motor, the output end of the driving motor is connected to the rotating spindle through a plum blossom pad coupling, the end of the rotating spindle is connected to the driving end of the floating seal tooling seat, driving the floating seal tooling seat to rotate; the rotating spindle outer shell is provided with a spindle box that supports the rotating spindle, and the rotating spindle can rotate in the spindle box.

[0014] Preferably, a two-component force sensor is provided between the axial loading shaft and the inner wall of the rotating seat; a support lubrication cooling system and a floating seal cavity temperature control system are provided on the frame; the support lubrication system is connected to the spindle box, and the floating seal cavity temperature control system is connected to the floating oil seal and monitors the temperature inside it.

[0015] Compared with the existing technology, the above technical solution has the following advantages or beneficial effects: 1. The present invention provides an angle adjustment component within the loading component, which can adjust the angle between the loading end and the driving end. Finally, the driving component drives the rotation, and the loading component is loaded, thereby realizing a running-in wear working life durability performance test simulating the angle between the two shafts of the floating oil seal under real working conditions, and the test effect is better.

[0016] 2. The present invention realizes axial loading, vertical adjustment and angle adjustment of the axial loading shaft through the axial loading seat, vertical moving seat and rotating seat and corresponding guide rails and guide blocks, and can realize docking at different positions of the two ends of the floating seal tooling seat according to test needs. It has a simple structure and is easy to adjust.

[0017] 3. The present invention realizes the collection of test data and the adjustment of simulated working conditions through a two-component force sensor, a support lubrication and cooling system, and a floating seal chamber temperature control system, and processes the obtained data to draw curves of force, torque and time, as well as curves of axial force and torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 3 It is a top sectional view of the present invention.

[0022] Figure 4 It is a front view cross-sectional view of the present invention.

[0023] Description of reference numerals: 1. Frame; 2. Workbench; 3. Floating seal fixture; 31. Loading end; 32. Driving end; 4. Loading assembly; 41. Angle adjustment assembly; 4101. Rotating seat; 4102. Rotating shaft; 4103. Rotating hole; 4104. Worm gear reducer; 4105. Angle locking plate; 4106. Locking bolt; 4107. External locking hole; 4108. Two-component force sensor; 4109. Angle adjustment rod; 4110. Internal locking hole; 42. Pressurizing assembly; 4201. Loading motor; 4202. Loading reducer; 4203. First synchronous pulley; 4204. Second synchronous pulley; 4205. Synchronous belt; 42 06. Loading bracket; 4207. Screw; 4208. Loading block; 4209. Loading motor mounting hole; 43. Axial loading seat; 44. Axial guide block; 45. Axial guide rail; 46. Vertical guide rail; 47. Vertical guide block; 48. Axial loading shaft; 49. Vertical adjustment dial; 410. Vertical drive screw; 411. Vertical screw hole; 412. Vertical moving seat; 413. Balance weight; 5. Drive assembly; 51. Drive motor; 52. Plum blossom pad coupling connection; 53. Rotating spindle; 54. Spindle box; 6. Support lubrication and cooling system; 7. Floating seal chamber temperature control system; 8. Loading machine cover; 9. Drive machine cover. DETAILED DESCRIPTION

[0024] To clearly illustrate the technical features of this solution, the present invention is described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides numerous different embodiments or examples for implementing various configurations of the present invention. To simplify the disclosure of the present invention, the following description focuses on components and configurations of specific examples. Furthermore, reference numbers and / or letters may be repeated throughout the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted to avoid unnecessarily limiting the present invention. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the drawings. These terms are used solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0025] The present invention aims to solve the problem of simulating the actual working conditions of radial angle and parallel offset running-in wear working life durability performance test bench, and realize the running-in wear working life durability performance test under the conditions of different axes and two axes with a certain angle under simulated actual working conditions; a certain force can also be applied axially, and this axial force is controllable and cyclic; at the same time, the rotational torque can also be measured and displayed on the control computer screen, and the force, torque and time curves, as well as the axial force and torque curves can be drawn.

[0026] In order to solve the above technical problems, the technical solution of this product invention is: Example 1: See also Figure 1-Figure 4This embodiment provides a floating oil seal service life durability test bench, comprising a frame 1, a workbench 2 mounted on the frame 1, and a floating seal fixture 3 mounted on the workbench 2. The floating seal fixture 3 has a loading end 31 at one end, which is connected to a loading assembly 4; and a driving end 32 at the other end, which is connected to a driving assembly 5. An angle adjustment assembly 41 is disposed within the loading assembly 4, capable of adjusting the angle between the loading end 31 and the driving end 32. This simulates a running-in wear service life durability test under conditions where an angle exists between the loading end 31 and the driving end 32 of the floating oil seal. A protective loading cover 8 is disposed outside the loading assembly 4, and a protective driving cover 9 is disposed outside the driving assembly 5.

[0027] Among them, the loading assembly 4 includes an axial loading seat 43, the bottom of the axial loading seat 43 is connected to the axial guide block 44, and the corresponding workbench 2 is connected to the axial guide rail 45. The axial loading seat 43 can move axially along the axial guide rail 45, and the bottom of the axial loading seat 43 is driven to move by the pressurizing assembly 42; the inner wall of the axial loading seat 43 is connected to the vertical guide rail 46, and the vertical guide rail 46 is slidably connected to the vertical guide block 47, and the vertical guide block 47 is connected to the vertical moving seat 412, and the vertical moving seat 412 is rotatably connected to the angle adjustment assembly 41. An axial loading shaft 48 is provided in the angle adjustment assembly 41, and one end of the axial loading shaft 48 is rotatably connected to the angle adjustment assembly 41, and the other end is connected to the loading end 31, and can rotate with the loading end 31.

[0028] For the vertical adjustment of the vertical movable seat 412, an electric telescopic rod can be set between the top of the axial loading seat 43 and the vertical movable seat 412 for support, or the following structure can be adopted: a vertical adjustment dial 49 is rotated and connected to the top of the loading seat, and the bottom of the vertical adjustment dial 49 is connected to the vertical drive screw 410, and a vertical screw hole 411 is opened at the top of the corresponding vertical movable seat 412. The vertical adjustment of the vertical movable seat 412 is achieved by rotating the vertical adjustment dial 49 to adjust the distance that the vertical drive screw 410 extends into the vertical screw hole 411.

[0029] In addition, in order to balance the weight and prevent large torque from being generated between the axial guide rail 45 and the axial guide block 44 of the loading assembly 4, thereby extending the service life of the test bench, a balancing weight block 413 is connected to the end of the axial loading seat 43 to balance the weight.

[0030] Example 2: Continue reading Figure 1-Figure 4Based on the first embodiment, this embodiment proposes an angle adjustment component 41, which makes it convenient to adjust and fix the angle. The above-mentioned angle adjustment component 41 includes a rotating seat 4101, and the two sides of the rotating seat 4101 are connected to the rotating shaft 4102. The corresponding axial loading seat 43 is provided with a rotating hole 4103, and the rotating shaft 4102 is inserted into the rotating hole 4103 and can rotate along the rotating hole 4103; an axial loading shaft 48 is axially arranged in the rotating seat 4101, and one end of the axial loading shaft 48 extends out of the rotating seat 4101, and the other end is rotatably connected to the inner wall of the rotating seat 4101; the end of the rotating shaft 4102 on one side is connected to the driving member, and the driving member can drive the rotating shaft 4102 to rotate, thereby realizing the rotation of the axial loading shaft 48.

[0031] In this embodiment, the driving member is a worm gear reducer 4104, the output end of the worm gear reducer 4104 is connected to the rotating shaft 4102, and the output end is connected to the angle adjustment rod 4109. Rotating the angle adjustment rod 4109 can drive the rotating shaft 4102 to rotate, thereby changing the angle between the loading end 31 and the driving end 32.

[0032] To secure the adjusted angle of the angle adjustment assembly 41 during the pressurization process, a rotary hole 4103 extends from the end of the rotating shaft 4102 not connected to the drive member and is connected to an angle locking disk 4105. The angle locking disk 4105 has a plurality of external locking holes 4107 defined along its circumference, corresponding to a plurality of internal locking holes 4110 defined on the vertically movable seat 412. Locking bolts 4106 pass through the external locking holes 4107 and the internal locking holes 4110 in sequence to lock the rotating shaft 4102 and thereby lock the angle between the loading end 31 and the driving end 32. The more external locking holes 4107 and internal locking holes 4110 defined, the greater the number of angles that can be secured.

[0033] Example 3: Continue reading Figure 1-Figure 4 In this embodiment, an axial load is applied to the axial loading seat 43 through a pressurizing component 42. The pressurizing component 42 includes a loading motor 4201 fixed on the frame 1. The output shaft of the loading motor 4201 is connected to the loading reducer 4202. The output end of the loading reducer 4202 is connected to a small synchronous pulley. The first synchronous pulley 4203 and the second synchronous pulley 4204 are connected through a synchronous belt 4205, and a tensioning wheel is provided to tension the synchronous belt 4205. The second synchronous belt is rotatably connected to the workbench 2; the workbench 2 is also axially provided with a screw 4207, and the screw 4207 is connected to a loading block 4208. The loading block 4208 is fixed to the bottom of the axial loading seat 43. The end of the screw 4207 is driven to connect to the second synchronous belt. The rotation of the screw 4207 drives the loading block 4208 to move axially to achieve loading.

[0034] In addition, a loading bracket 4206 is sleeved on the lead screw 4207, and a bearing is provided inside the loading bracket 4206, which can support the lead screw 4207; a loading motor mounting hole 4209 is provided at the bottom of the loading bracket 4206, and the loading motor 4201 is fixed in the mounting hole.

[0035] Example 4: Continue reading Figure 1-Figure 4 The driving assembly 5 of this embodiment includes a driving motor 51, and a coupling is passed between the output end of the driving motor 51 and the rotating main shaft 53. In this embodiment, a plum blossom pad coupling connection 52 is adopted. The end of the rotating main shaft 53 is connected to the driving end 32 of the floating seal tooling seat 3, driving the floating seal tooling seat 3 to rotate; the rotating main shaft 53 is provided with a main shaft box 54 supporting the rotating main shaft 53, and the rotating main shaft 53 can rotate in the main shaft box 54.

[0036] Embodiment 5: See also Figure 3 A two-component force sensor 4108 is provided between the axial loading shaft 48 and the inner wall of the rotating seat 4101. The two-component force sensor 4108 can convert the applied axial force into an electrical signal and transmit it to the controller, so that the tester can intuitively see the magnitude of the applied force and adjust it accordingly. The frame 1 is provided with a support lubrication cooling system 6 and a floating seal chamber temperature control system 7; the support lubrication system is connected to the spindle box 54, and the floating seal chamber temperature control system 7 is connected to the floating oil seal and monitors the internal temperature thereof.

[0037] The lubrication and cooling system of the spindle box 54 includes a motor, an oil pump, an oil tank, pipelines, an oil cooler and a temperature control component. The motor drives the oil pump to supply oil to the bearings at both ends of the spindle box 54 for lubrication; the oil tank is connected to the oil cooler to cool the lubricating oil temperature and keep it at a reasonable oil temperature.

[0038] The floating seal chamber temperature control system 7 includes a motor, an oil pump, an oil tank, pipelines, a radiator, a fan and a temperature control system. The floating seal chamber is connected to the pump oil outlet in the oil tank, and the oil return pipeline is connected to the radiator. Under the action of the fan, the oil temperature is controlled within a certain temperature range.

[0039] Working principle: First, by turning the vertical adjustment dial 49 to drive the vertical driving screw 410 to rotate, the position of the axial loading shaft 48 can be adjusted up and down, and then the angle adjustment rod 4109 is turned. The angle adjustment rod 4109 drives the worm gear reducer 4104 to rotate, so that the rotating shaft 4102 rotates slowly to adjust the angle. After the adjustment is completed, the angle is fixed using the angle locking disk 4105; then loading can be started, and the axial loading shaft 48 is driven forward by the loading component 4 to continuously squeeze the floating seal fixture seat 3, and then the driving component 5 is started, and the rotating main shaft 53 is driven to rotate by the driving motor 51 to drive the rotation of the floating seal fixture seat 3 to realize loading under rotation. At the same time, it can also realize the friction and wear test of the rotating main shaft 53 and the axial loading shaft 48 offset and at a certain angle to realize one end rotation and one end loading, and test the surface pressure of the floating oil seal and the torque driving the floating oil seal.

[0040] Although the above describes the specific implementation methods of the invention in conjunction with the accompanying drawings, it does not limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A floating oil seal service life durability test bench, characterized by: The invention comprises a frame (1), a workbench (2) is provided on the frame (1), a floating seal fixture seat (3) is provided on the workbench (2), one end of the floating seal fixture seat (3) is a loading end (31), and the loading end (31) is connected to a loading component (4); the other end is a driving end (32), and the driving end (32) is connected to a driving component (5); an angle adjustment component (41) is provided in the loading component (4), and the angle adjustment component (41) can adjust the angle between the loading end (31) and the driving end (32), so as to simulate the running-in wear working life durability performance test under the condition that there is an angle between the loading end (31) and the driving end (32) of the floating oil seal.

2. The floating oil seal service life durability test bench according to claim 1, characterized in that: The loading assembly (4) includes an axial loading seat (43), the bottom of the axial loading seat (43) is connected to an axial guide block (44), and the corresponding workbench (2) is connected to an axial guide rail (45), the axial loading seat (43) can move axially along the axial guide rail (45), and the bottom of the axial loading seat (43) is driven to move by a pressurizing assembly (42); the inner wall of the axial loading seat (43) is connected to a vertical guide rail (46), the vertical guide rail (46) is slidably connected to a vertical guide block (47), the vertical guide block (47) is connected to a vertical moving seat (412), the vertical moving seat (412) is rotatably connected to an angle adjustment assembly (41), and an axial loading shaft (48) is provided in the angle adjustment assembly (41), one end of the axial loading shaft (48) is rotatably connected to the angle adjustment assembly (41), and the other end is connected to the loading end (31), and can rotate with the loading end (31).

3. The floating oil seal service life durability test bench according to claim 2, characterized in that: The top of the loading seat is rotatably connected to the vertical adjustment dial (49), the bottom of the vertical adjustment dial (49) is connected to the vertical drive screw (410), and a vertical screw hole (411) is provided at the top of the corresponding vertical movable seat (412). The vertical adjustment of the vertical movable seat (412) is achieved by rotating the vertical adjustment dial (49) to adjust the distance that the vertical drive screw (410) extends into the vertical screw hole (411).

4. The floating oil seal service life durability test bench according to claim 2, characterized in that: The angle adjustment assembly (41) includes a rotating seat (4101), and both sides of the rotating seat (4101) are connected to the rotating shaft (4102). A rotating hole (4103) is provided on the corresponding axial loading seat (43), and the rotating shaft (4102) is inserted into the rotating hole (4103) and can rotate along the rotating hole (4103); an axial loading shaft (48) is axially arranged in the rotating seat (4101), one end of the axial loading shaft (48) extends out of the rotating seat (4101), and the other end is rotatably connected to the inner wall of the rotating seat (4101); the end of the rotating shaft (4102) on one side is connected to a driving member, and the driving member can drive the rotating shaft (4102) to rotate, thereby realizing the rotation of the axial loading shaft (48).

5. The floating oil seal service life durability test bench according to claim 4, characterized in that: The driving member is a worm gear reducer (4104), the output end of the worm gear reducer (4104) is connected to the rotating shaft (4102), and the output end is connected to the angle adjustment rod (4109). Rotating the angle adjustment rod (4109) can drive the rotating shaft (4102) to rotate, thereby changing the angle between the loading end (31) and the driving end (32).

6. The floating oil seal service life durability test bench according to claim 4, characterized in that: The end of the rotating shaft (4102) not connected to the driving member extends out of the rotating hole (4103) and is connected to the angle locking disk (4105). The angle locking disk (4105) is provided with a plurality of outer locking holes (4107) along the circumference, and a plurality of inner locking holes (4110) are provided on the corresponding vertical movable seat (412). The locking bolt (4106) passes through the outer locking holes (4107) and the inner locking holes (4110) in sequence to achieve locking of the rotating shaft (4102), thereby achieving angular locking between the loading end (31) and the driving end (32).

7. The floating oil seal service life durability test bench according to claim 1, characterized in that: The pressurizing assembly (42) includes a loading motor (4201) fixed on the frame (1), the output shaft of the loading motor (4201) is connected to the loading reducer (4202), the output end of the loading reducer (4202) is connected to a small synchronous pulley, the first synchronous pulley (4203) and the second synchronous pulley (4204) are connected via a synchronous belt (4205), and the second synchronous belt is rotatably connected to the workbench (2); the workbench (2) is further provided with a lead screw (4207) along the axial direction, the lead screw (4207) is connected to a loading block (4208), the loading block (4208) is fixed to the bottom of the axial loading seat (43), the end of the lead screw (4207) is driven to connect to the second synchronous belt, and the lead screw (4207) rotates to drive the loading block (4208) to move along the axial direction to achieve loading.

8. The floating oil seal service life durability test bench according to claim 7, characterized in that: A loading bracket (4206) is also sleeved on the lead screw (4207), and a bearing is provided in the loading bracket (4206). The loading bracket (4206) can support the lead screw (4207); a loading motor mounting hole (4209) is provided at the bottom of the loading bracket (4206), and the loading motor (4201) is fixed in the mounting hole.

9. The floating oil seal service life durability test bench according to claim 1, characterized in that: The driving assembly (5) includes a driving motor (51), an output end of the driving motor (51) and a rotating spindle (53) are connected via a plum blossom pad coupling (52), an end of the rotating spindle (53) is connected to a driving end (32) of a floating seal fixture seat (3), and drives the floating seal fixture seat (3) to rotate; the rotating spindle (53) is provided with a spindle box (54) supporting the rotating spindle (53) on its outer sleeve, and the rotating spindle (53) can rotate in the spindle box (54).

10. A floating oil seal service life durability test bench according to any one of claims 1 to 9, characterized in that: A two-component force sensor (4108) is further provided between the axial loading shaft (48) and the inner wall of the rotating seat (4101); a support lubrication cooling system (6) and a floating seal cavity temperature control system (7) are provided on the frame (1); the support lubrication system is connected to the spindle box (54), and the floating seal cavity temperature control system (7) is connected to the floating oil seal and monitors the temperature inside the floating oil seal.

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