A special detection assembly for testing hydrostatic slide oil film stiffness

Abstract

The application relates to a special detection assembly for testing the oil film stiffness of a static pressure sliding block, and belongs to the technical field of oil film stiffness detection. The structure of the detection assembly comprises a workbench, wherein a test assembly, a support frame, a loading assembly, a first loading unit and a second loading unit are arranged on the workbench. The loading assembly comprises a stand column and a loading plate. The stand column is slidably arranged on the workbench, and the loading plate is slidably arranged on one side of the stand column. The loading plate is located on the top of the test assembly, and the top of the support frame is located above the loading plate. A sliding cavity is arranged in the bottom of the loading plate, and a connecting block is slidably arranged in the sliding cavity. The first loading unit is arranged in the workbench, and is used for pushing the stand column to slide. The second loading unit is located on the other side of the test assembly, and is used for abutting against the side surface of the connecting block. A distance sensor is arranged on the test assembly. The application has the technical effect that the automatic and accurate loading and the coherent connection of the test process of the load in different directions are achieved.

Description

Technical Field

[0001] This application relates to the technical field of oil film stiffness testing, and in particular to a dedicated testing component for testing the stiffness of hydrostatic slider oil film. Background Technology

[0002] The oil film formed between the hydrostatic guide rail and the hydrostatic slider is a core element for ensuring low-friction operation of components and improving equipment accuracy and service life. The stiffness performance of the oil film directly determines the load-bearing stability and transmission accuracy of the equipment. The dedicated testing component for hydrostatic slider oil film stiffness is a core functional component of this platform. It primarily uses a distance sensor to accurately detect the stiffness parameters of the oil film between the hydrostatic slider and the hydrostatic guide rail under load. Existing dedicated testing components for oil film stiffness testing platforms mostly lack multi-directional loading capabilities, only capable of longitudinal load loading. They cannot continuously simulate loads in different directions during testing. To complete lateral stiffness testing, manual disassembly and readjustment of the hydrostatic slider and component assembly are required, resulting in low automation. This not only reduces testing efficiency but also affects the consistency of multiple test data due to differences in the timing and force of manual operation.

[0003] Patent application (CN 119985062 A) discloses a hydrostatic guide rail performance testing device and a hydrostatic guide rail performance testing method. The hydrostatic guide rail performance testing device includes a base, a pressurizing component, a driving component, an oil supply component, a detection component, and a processor. A guide rail groove is formed on the guide rail. The pressurizing component is mounted on the base and has a first position where it abuts against the hydrostatic slider to apply pressure to the slider, and a second position where it is separated from the hydrostatic slider. The driving component is used to drive the hydrostatic slider to slide within the guide rail groove. The oil supply component is connected to the hydrostatic slider. The processor is electrically connected to the detection component. The processor is used at least to calculate the rigidity of the oil film and use the rigidity of the oil film to determine the load-bearing capacity of the hydrostatic slider, and to determine whether the motion performance of the hydrostatic slider meets the standard by the flow rate of the oil in the hydrostatic slider. The above patent can realize the detection of the oil film between a single slider and the hydrostatic guide rail, but it cannot realize the automatic and accurate loading of loads in different directions or the continuous connection of tests in different directions.

[0004] Regarding the aforementioned technologies, the inventors believe that there is a deficiency in achieving a seamless connection between the automatic and precise loading and testing processes for loads in different directions. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a dedicated testing component for testing the stiffness of hydrostatic slider oil film.

[0006] This application provides a dedicated testing component for testing the stiffness of a hydrostatic slider oil film, which adopts the following technical solution: A dedicated testing assembly for hydrostatic slider oil film stiffness testing includes a worktable. The worktable is equipped with a testing assembly, a support frame, a loading assembly, a first loading unit, and a second loading unit. The loading assembly includes a column and a loading plate. The column is slidably mounted on the worktable, located on one side of the testing assembly. The loading plate is slidably mounted on one side of the column, located at the top of the testing assembly. The top of the support frame is located above the loading plate. A sliding cavity is provided at the bottom of the loading plate, and a connecting block is slidably mounted within the sliding cavity. The first loading unit is located inside the worktable and is used to push the column to slide. The second loading unit is located on the other side of the testing assembly and is used to abut against the side of the connecting block. A distance sensor is provided on the testing assembly.

[0007] By adopting the above technical solution, the loading plate is slidably connected to the column and is located above the test component. Through the up-and-down sliding of the loading plate and the cooperation of the first loading unit and the second loading unit, vertical force, lateral load, and reverse lateral force can be applied to the test component to achieve testing in three directions. This multi-directional testing method can more comprehensively simulate the stress situation of the oil film in actual work, thereby more accurately evaluating the stiffness performance of the oil film. When the loading plate slides down, a vertical force is applied to the test component for testing. At this time, the distance sensor can accurately measure the deformation of the test component. Combined with the magnitude of the applied force, the stiffness of the oil film in the vertical direction can be accurately calculated. When the loading plate moves up and back and moves down again, two lateral loads in opposite directions are applied respectively through the control of the first loading unit and the second loading unit. Similarly, the corresponding deformation can be measured using the distance sensor, which improves the accuracy of the lateral stiffness test. Repeated loading tests of the test component can be realized, ensuring the repeatability of the test results. Compared with the traditional method that requires testing in different directions separately, it improves testing efficiency and saves testing time and cost.

[0008] Preferably, two sets of linear guide rails are provided between the column and the worktable; a groove is provided in the middle part of the bottom of the column, and a stop block is slidably provided in the groove; a drive slider is provided between the two sets of linear guide rails, and the two sides of the drive slider are slidably connected to the two sets of linear guide rails; a positioning groove is provided on the drive slider.

[0009] By adopting the above technical solution, when the loading plate moves downward for the first time for longitudinal testing, the stop block will slide into the positioning groove of the drive slider, and directly lock the relative position of the column and the worktable with the first loading unit. This eliminates the possibility of the column accidentally sliding due to force during longitudinal loading, and avoids interference from lateral displacement on the accuracy of longitudinal force application and the measurement results of the distance sensor. Two sets of linear guide rails are used between the column and the worktable. Compared with the single guide rail design, the force on the column can be distributed more evenly, reducing the tilting or shaking of the column during sliding. The drive slider is slidably connected to the linear guide rails on both sides. With the precise cooperation of the positioning groove and the stop block, the transmission of driving force during subsequent lateral loading is more stable.

[0010] Preferably, a drive hose is provided on the groove and the sliding cavity, and the two ends of the drive hose are respectively connected to the groove and the sliding cavity.

[0011] By adopting the above technical solution, the drive hose connects the groove and the sliding cavity. Utilizing the pressure change in the sliding cavity when the loading plate rises and falls, the medium inside the sliding cavity is squeezed when the loading plate descends, and transmitted to the groove through the drive hose, pushing the stop block down. When the loading plate rises, the pressure in the sliding cavity is released, and the stop block rises under the action of the reverse force or the backflow of the medium, so that the rise and fall of the stop block is synchronized with the movement of the loading plate.

[0012] Preferably, a clearance groove is provided at one end of the bottom of the drive slider, and a pushing component is provided in the clearance groove; the pushing component includes a push rod and a tension spring, the push rod is rotatably connected in the clearance groove; one end of the tension spring is rotatably connected to the push rod, and the other end of the tension spring is rotatably connected in the clearance groove.

[0013] By adopting the above technical solution, during the longitudinal test phase when the loading plate slides downwards for the first time, the first loading unit moves. The push rod rotates around the rotation point due to the force and compresses the tension spring, avoiding the movement of the first loading unit. This allows the first loading unit to reach the preset position and cooperate with the stop block, ensuring that the drive slider remains locked at this time, fixing the column and preventing interference from the movement of the first loading unit, thus ensuring the independence of the longitudinal test. During the lateral test preparation phase when the loading plate returns upwards, the first loading unit moves in the opposite direction. At this time, the push rod, under the restoring force of the tension spring, comes into contact with the drive end of the first loading unit. After being pushed, it pushes against the push rod, causing the drive slider to move synchronously. This cooperates with the loading plate to unlock the stop block, allowing the column to slide and avoiding affecting the lateral force loading test.

[0014] Preferably, the first loading unit includes a sliding rod, a return spring, a rotating rod, a connecting rod, a support rod, a sleeve, and a connecting slider. The sliding rod is longitudinally slidably disposed on the worktable, and is located below the loading plate on one side of the column. The return spring is sleeved on the sliding rod. In its natural state, one end of the return spring is fixedly connected to the worktable, and the other end is fixedly connected to the sliding rod. One end of the support rod is fixedly connected to the bottom of the worktable, and the rotating rod is rotatably connected to the other end of the support rod. The sleeve is rotatably connected to the bottom of the sliding rod, one end of the rotating rod is slidably disposed within the sleeve, and the other end of the rotating rod is rotatably disposed on the connecting slider. The top of the connecting slider is slidably connected to the bottom of the driving slider.

[0015] By adopting the above technical solution, the longitudinal movement of the sliding rod is transformed into the lateral movement of the linked slider through the cooperation of the sleeve, rotating rod, and connecting rod. This drives the driving slider to achieve horizontal displacement, linking the longitudinal movement of the loading plate with the lateral sliding of the column, providing a stable power source for lateral force loading. Simultaneously, through the elastic potential energy of the return spring, the sliding rod slides upward when the loading plate rises. When the loading plate slides downward for the first time, the sliding rod is compressed and moves downward, driving the linked slider to move laterally through the rotating rod. However, due to the avoidance action of the push rod, the driving slider remains stationary, avoiding interference of lateral force with the longitudinal test. When the loading plate rises, the return spring pushes the sliding rod to return to its original position, and the rotating rod drives the linked slider in the opposite direction. At this time, the push rod abuts against the linked slider under the action of the tension spring, thereby pushing the driving slider to move. At this time, the column can slide freely without affecting the lateral loading test of the second loading unit. When the loading plate falls again, the stop block falls, and the driving slider slides in the opposite direction, causing one end of the driving slider to abut against the stop block. By abutting against the stop block, the column moves in the opposite direction, allowing the test assembly to perform a lateral loading test in the opposite direction.

[0016] Preferably, the second loading unit includes a pressurizing component, an oil guide pipe, and a driving component. The base of the pressurizing component is slidably mounted on a support frame, and the working end of the pressurizing component is located on the top of the loading plate. The base of the driving component is fixedly connected to the worktable, and the working end of the driving component is located on one side of the connecting block. The working end of the driving component has the freedom to move towards the side of the connecting block. The two ends of the oil guide pipe are respectively connected to the pressurizing component and the driving component.

[0017] By adopting the above technical solution, the working end of the pressurizing component acts on the top of the loading plate. When the loading plate rises, the pressurizing component generates pressure as the loading plate moves. The hydraulic energy is transmitted to the drive component through the oil guide pipe. The working end of the drive component then moves to the side of the connecting block and applies a lateral load. The hydraulic transmission has the characteristics of uniform force transmission and stable response. The oil guide pipe can linearly convert the pressure of the pressurizing component into the lateral force of the drive component on the connecting block, avoiding force fluctuations caused by rigid mechanical transmission. At the same time, by adjusting the pressure parameters of the pressurizing component, the magnitude of the lateral loading force can be flexibly adjusted to meet the force range requirements under different test conditions, thus improving the versatility of the equipment.

[0018] Preferably, the pressurization assembly includes a first hydraulic cylinder and a first hydraulic rod. The first hydraulic cylinder is slidably mounted on the support frame, one end of the first hydraulic rod is slidably mounted inside the first hydraulic cylinder, and the other end of the first hydraulic rod is fixedly connected to the top of the loading plate.

[0019] By adopting the above technical solution, the first hydraulic rod is fixedly connected to the top of the loading plate. When the loading plate rises or falls, it will directly drive the first hydraulic rod to slide in the first hydraulic cylinder. The rigid connection can capture the displacement change of the loading plate in real time, ensuring that the movement of the loading plate and the pressure change in the hydraulic cylinder are completely synchronized, avoiding the signal delay that may occur with the flexible connection, and providing a stable triggering condition for the accurate application of subsequent lateral force. The first hydraulic cylinder is slidably set on the support frame. When the loading plate drives the first hydraulic rod to rise or fall, the hydraulic cylinder can slide synchronously along the support frame, avoiding the impact on the test results when lateral loading occurs.

[0020] Preferably, the drive assembly includes a second hydraulic cylinder and a second hydraulic rod. The second hydraulic cylinder is fixedly mounted on the worktable, one end of the second hydraulic rod is slidably mounted inside the second hydraulic cylinder, and the other end of the second hydraulic rod has the freedom to move toward the side of the connecting block.

[0021] By adopting the above technical solution, the second hydraulic cylinder is connected to the first hydraulic cylinder through the oil guide pipeline, which can linearly convert the hydraulic energy transmitted by the pressurization component into the thrust of the second hydraulic rod. The hydraulically driven force output is more stable, without rigid impact, and avoids the lateral force fluctuation affecting the accuracy of the oil film stiffness test data.

[0022] Preferably, the test assembly includes a support frame, a static pressure guide rail, a static pressure slider, two sets of side slide rails, and two sets of pressure plates. The static pressure guide rail is mounted on the support frame, the two sets of side slide rails are mounted on both sides of the static pressure guide rail, the two sets of pressure plates are mounted on the two sets of side slide rails, the static pressure slider is mounted on the static pressure guide rail, the static pressure slider is located between the two sets of side slide rails, and the top of the static pressure slider is detachably connected to the bottom of the connecting block.

[0023] By adopting the above technical solution, the hydrostatic guide rail and the hydrostatic slider cooperate to form an oil film for testing. Two sets of side slide rails are symmetrically arranged on both sides of the hydrostatic guide rail, forming lateral limiting and lateral testing with the hydrostatic slider. This ensures that the hydrostatic slider can only move in the set direction, avoiding deviation or shaking during loading and ensuring that the loading force is accurately applied to the oil film test area. Two sets of pressure plates are installed on the side slide rails to further fix the test piece, preventing displacement or detachment of the test piece during multi-directional loading. At the same time, they provide stable lateral constraints for the oil film, simulating the boundary conditions in actual working scenarios and improving the reference value of the test results.

[0024] Preferably, a loading hydraulic cylinder is slidably mounted on the support frame, the base of the loading hydraulic cylinder is located on the top of the support frame, and the working end of the loading hydraulic cylinder is fixedly connected to the top of the loading plate.

[0025] By adopting the above technical solution, the loading hydraulic cylinder is directly fixed to the top of the support frame, and the working end is rigidly connected to the loading plate. It can output continuous and stable longitudinal thrust or tension, accurately control the descent speed of the loading plate and the magnitude of the applied longitudinal pressure. By adjusting the pressure parameters of the loading hydraulic cylinder, the precise output of longitudinal loading force of different magnitudes can be achieved, meeting the testing requirements of oil films with different stiffness, and greatly improving the testing range and applicability of the equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. When the loading plate moves downward for the first time for longitudinal testing, the stop block slides into the positioning groove of the drive slider, directly locking the relative position of the column and the worktable with the first loading unit. This eliminates the possibility of the column accidentally sliding due to force during longitudinal loading, and avoids interference from lateral displacement on the accuracy of longitudinal force application and the measurement results of the distance sensor. Two sets of linear guide rails are used between the column and the worktable. Compared with the single guide rail design, this can distribute the force on the column more evenly and reduce the tilting or shaking of the column during sliding. The drive slider is slidably connected to the linear guide rails on both sides. With the precise cooperation of the positioning groove and the stop block, the driving force transmission during subsequent lateral loading is more stable.

[0027] 2. The longitudinal movement of the sliding rod is converted into the lateral movement of the linked slider through the cooperation of the sleeve, rotating rod, and connecting rod. This drives the driving slider to achieve horizontal displacement, linking the longitudinal movement of the loading plate with the lateral sliding of the column, providing a stable power source for lateral force loading. Simultaneously, the elastic potential energy of the return spring causes the sliding rod to slide upward when the loading plate rises. When the loading plate slides downward for the first time, the sliding rod is compressed and moves downward, driving the linked slider to move laterally through the rotating rod. However, due to the avoidance action of the push rod, the driving slider remains stationary to avoid lateral force interference with the longitudinal test. When the loading plate rises, the return spring pushes the sliding rod to return to its original position, and the rotating rod drives the linked slider in the opposite direction. At this time, the push rod abuts against the linked slider under the action of the tension spring, thereby pushing the driving slider to move. At this time, the column can slide freely without affecting the lateral loading test of the second loading unit. When the loading plate descends again, the stop block descends, and the driving slider slides in the opposite direction, causing one end of the driving slider to abut against the stop block. By abutting against the stop block, the column moves in the opposite direction, allowing the test assembly to perform a lateral loading test in the opposite direction. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0029] Figure 2 This is a schematic diagram of the structure of the test component in the embodiment.

[0030] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the loading component in the embodiment.

[0031] Figure 4 This is a schematic diagram of the structure of the first loading unit in the embodiment.

[0032] Figure 5 This is a cross-sectional schematic diagram of the internal structure of the second loading unit in the embodiment.

[0033] Figure 6 This is a cross-sectional schematic diagram of the driving slider structure in the embodiment.

[0034] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Test assembly; 21. Bearing frame; 22. Static pressure guide rail; 23. Static pressure slider; 24. Side slide rail; 25. Pressure plate; 26. Distance sensor; 3. Support frame; 31. Loading hydraulic cylinder; 4. Loading assembly; 41. Column; 411. Groove; 412. Stop block; 42. Loading plate; 421. Sliding cavity; 422. Connecting block; 5. First loading unit; 51. Sliding rod; 52. Return spring; 53. Rotation. 54. Linkage rod; 55. Support rod; 56. Sleeve; 57. Linked slider; 6. Second loading unit; 61. Pressurization assembly; 611. First hydraulic cylinder; 612. First hydraulic rod; 62. Oil guide line; 63. Drive assembly; 631. Second hydraulic cylinder; 632. Second hydraulic rod; 7. Linear guide rail; 8. Drive slider; 81. Positioning groove; 82. Clearance groove; 83. Push assembly; 831. Push rod; 832. Tension spring; 9. Drive hose. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0036] This application discloses a dedicated testing component for testing the stiffness of an oil film on a hydrostatic slider. (Refer to...) Figure 1 and Figure 2 The test assembly includes a workbench 1, on which a test component 2, a support frame 3, a loading component 4, a first loading unit 5, and a second loading unit 6 are mounted. The test component 2 includes a support frame 21, a static pressure guide rail 22, a static pressure slider 23, two sets of side slide rails 24, and two sets of pressure plates 25. The static pressure guide rail 22 is mounted on the support frame 21, the two sets of side slide rails 24 are located on both sides of the static pressure guide rail 22, the two sets of pressure plates 25 are located on the two sets of side slide rails 24, and the static pressure slider 23 is mounted on the static pressure guide rail 22, positioned between the two sets of side slide rails 24. The loading component 4 includes a column 41 and a loading plate 42. The column 41 is slidably mounted on the workbench 1, located on one side of the test component 2. The 2-slidable arrangement is located on one side of the column 41, the loading plate 42 is located on the top of the test assembly 2, and the top of the support frame 3 is located above the loading plate 42; a loading hydraulic cylinder 31 is slidably arranged on the support frame 3, the base of the loading hydraulic cylinder 31 is located on the top of the support frame 3, and the working end of the loading hydraulic cylinder 31 is fixedly connected to the top of the loading plate 42. The loading hydraulic cylinder 31 is used to drive the loading plate 42 to slide longitudinally along the column 41; the first loading unit 5 is arranged inside the workbench 1 and is used to push the column 41 to slide; the second loading unit 6 is located on the other side of the test assembly 2 and is used to abut against the side of the connecting block 422; a distance sensor 26 is arranged on the bearing frame 21 on the test assembly 2.

[0037] Reference Figure 1 and Figure 3 A sliding cavity 421 is provided at the bottom of the loading plate 42, and a connecting block 422 is slidably disposed within the sliding cavity 421. The top of the static pressure slider 23 is connected to the bottom of the connecting block 422 by bolts. When the loading plate 42 slides to a certain position, the loading plate 42 will abut against the connecting block 422 to test the test component 2. A groove 411 is provided in the middle part of the bottom of the column 41, and a stop block 412 is slidably disposed within the groove 411. A drive hose 9 is provided on the groove 411 and the sliding cavity 421, and the two ends of the drive hose 9 are connected to the groove 411 and the sliding cavity 421 respectively. When the loading hydraulic cylinder 31 drives the loading plate 42 to slide downward, the oil pressure drives the stop block 412 to slide downward and cooperate with the positioning groove 81 to fix the column 41, so that the loading component 4 performs longitudinal detection on the test component 2. Conversely, when the loading plate 42 slides upward, the stop block slides upward and enters the groove 411. The upward sliding of the loading plate 42 drives the second loading unit 6 to perform lateral detection on the test component 2. The stop block 412 slides into the groove 411, so that the column 41 can slide. This prevents the load generated by the second loading unit 6 from being applied to the column 41 when the column 41 is fixed, which would affect the test data.

[0038] Reference Figure 1 and Figure 5 The second loading unit 6 includes a pressurizing component 61, an oil guide pipe 62, and a driving component 63. The base of the pressurizing component 61 is slidably mounted on the support frame 3, and the working end of the pressurizing component 61 is located on the top of the loading plate 42. The base of the driving component 63 is fixedly connected to the worktable 1, and the working end of the driving component 63 is located on one side of the connecting block 422, and the working end of the driving component 63 has the freedom to move towards the side of the connecting block 422. The two ends of the oil guide pipe 62 are respectively connected to the pressurizing component 61 and the driving component 63. The pressurizing component 61 includes a first hydraulic cylinder 611 and a first hydraulic rod 612. The first hydraulic cylinder 611 is slidably mounted on the support frame 3, and one end of the first hydraulic rod 612 is slidably mounted on the first hydraulic cylinder 611. Inside the hydraulic cylinder 611, the other end of the first hydraulic rod 612 is fixedly connected to the top of the loading plate 42; the drive assembly 63 includes a second hydraulic cylinder 631 and a second hydraulic rod 632. The second hydraulic cylinder 631 is fixedly mounted on the workbench 1. One end of the second hydraulic rod 632 is slidably mounted inside the second hydraulic cylinder 631. The other end of the second hydraulic rod 632 has the freedom to move toward the side of the connecting block 422. When the loading plate 42 slides upward to return, the first hydraulic rod 612 slides upward inside the first hydraulic cylinder 611 and drives the second hydraulic rod 632 inside the second hydraulic cylinder 631 to slide outward through the oil guide pipe 62, so that the second hydraulic cylinder 631 moves toward the test assembly 2 and abuts against the test assembly 2 for lateral detection.

[0039] Reference Figure 1 and Figure 6Two sets of linear guide rails 7 are provided between the column 41 and the worktable 1; a drive slider 8 is provided between the two sets of linear guide rails 7, and the two sides of the drive slider 8 are slidably connected to the two sets of linear guide rails 7; a positioning groove 81 is provided on the drive slider 8, and a clearance groove 82 is provided at one end of the bottom of the drive slider 8, and a push assembly 83 is provided in the clearance groove 82; the push assembly 83 includes a push rod 831 and a tension spring 832, the push rod 831 is rotatably connected in the clearance groove 82; one end of the tension spring 832 is rotatably connected to the push rod 831, and the other end of the tension spring 832 is rotatably connected in the clearance groove 82; multiple sets of limiting posts are provided at the bottom of the two sets of linear guide rails 7, and the limiting posts are used to abut against the drive slider 8 and limit the sliding position of the drive slider 8.

[0040] Reference Figure 4 and Figure 6 The first loading unit 5 includes a sliding rod 51, a return spring 52, a rotating rod 53, a connecting rod 54, a support rod 55, a sleeve 56, and a connecting slider 57. The sliding rod 51 is longitudinally slidably mounted on the worktable 1, and is located below the loading plate 42 on one side of the column 41. The return spring 52 is sleeved on the sliding rod 51. In its natural state, one end of the return spring 52 is fixedly connected to the worktable 1, and the other end is fixedly connected to the sliding rod 51. One end of the support rod 55 is fixedly connected to the bottom of the worktable 1, and the rotating rod 53 is rotatably connected to the other end of the support rod 55. The sleeve 56 is rotatably connected to the bottom of the sliding rod 51. One end of the rotating rod 53 is slidably mounted inside the sleeve 56, and the other end of the rotating rod 53 is rotatably mounted on the connecting rod 54. The top of the sliding block 57 is slidably connected to the bottom of the drive block 8. When the loading plate 42 slides down for the first time, it is a longitudinal load test. The bottom of the loading plate 42 will abut against the sliding rod 51, causing the sliding rod 51 to slide down. Through the cooperation between the sleeve 56, the rotating rod 53, the connecting rod 54 and the support rod 55, the sliding block 57 moves towards the push rod 831. The drive block 8 is blocked by the limiting column and does not move. The sliding block 57 pushes the push rod 831 to the relief groove 82. Then, the tension spring 832 resets the push rod 831. At the same time, the stop block 412 slides into the positioning groove 81 to fix the column 41, completing the longitudinal loading oil film test. The sliding block 57 is provided with a sliding margin at the relief groove 82 to prevent it from affecting the longitudinal loading test.

[0041] Reference Figure 3 , Figure 4 and Figure 6The loading plate 42 slides upward, the stop block 412 slides upward, allowing the drive slider 8 to slide. The sliding rod 51 slides upward by the force of the return spring 52. The sliding rod 51 drives the sleeve 56, rotating rod 53, connecting rod 54 and support rod 55 to cooperate, causing the connecting slider 57 to slide in the opposite direction. The connecting slider 57 pushes the drive slider 8 to slide by abutting the push rod 831. The loading plate 42 slides downward again, the stop block 412 slides downward, and the connecting slider 57 drives the drive slider 8 to slide. At this time, one side of the drive slider 8 will abut the stop block 412, causing the drive column 41 to slide, thus completing the application of a test force to the test assembly 2 in the opposite direction to the second loading unit 6, and completing the oil film test from three different directions.

[0042] The working principle of the special testing component for testing the oil film stiffness of a hydrostatic slider in this application is as follows: through the coordinated action of the loading component 4, the first loading unit 5, and the second loading unit 6, the oil film performance of the testing component 2 in three directions, namely longitudinal, bidirectional lateral, and longitudinal, is tested. The testing component 2 is fixed on the workbench 1, the hydrostatic slider 23 is on the hydrostatic guide rail 22, and there are side slide rails 24 and pressure plates 25 on both sides. The distance sensor 26 on the support frame 21 is used to collect test data. The loading component 4 consists of a column 41, a loading plate 42, and a loading hydraulic cylinder 31. The column 41 can slide on the workbench 1 through the linear guide rail 7. The loading plate 42 is driven by the loading hydraulic cylinder 31 to slide up and down along the column 41. The first loading unit 5 is hidden inside the workbench 1 and is used to push the column 41 to slide.The second loading unit 6 is located on one side of the test assembly 2 and is used to apply lateral force. The drive slider 8 is associated with the column 41. The drive slider 8 has a positioning groove 81 for engaging with the stop block 412. The pushing assembly 83 includes a push rod 831 and a tension spring 832, which are used to limit or push the drive slider 8. The loading hydraulic cylinder 31 is activated, driving the loading plate 42 to slide downward along the column 41. The bottom of the loading plate 42 abuts against the sliding rod 51 inside the workbench 1, causing the sliding rod 51 to move downward. Through the cooperation of the sleeve 56, the rotating rod 53, and the connecting rod 54, the linked slider 57 moves and actuates the push rod 831 on the drive slider 8, causing the linked slider 57 to move. 7. Upon reaching the predetermined position, push rod 831 resets under the action of tension spring 832. Simultaneously, as loading plate 42 slides downward, oil is pressed into groove 411 of column 41 through drive hose 9, pushing stop block 412 downward into positioning groove 81 of drive slider 8, completely fixing column 41. Loading plate 42 continues downward, applying longitudinal pressure to static pressure slider 23 through connecting block 422. Distance sensor 26 on bearing frame 21 collects longitudinal oil film data, completing the longitudinal test. Loading hydraulic cylinder 31 drives loading plate 42 to slide upward, driving stop block 412 to retract upward into groove 411 of column 41, releasing column 41 from fixation. When the loading plate 42 slides upward, the top of the loading plate 42 pushes the first hydraulic rod 612 of the second loading unit 6, causing it to move upward within the first hydraulic cylinder 611. Hydraulic oil is then forced into the second hydraulic cylinder 631 through the oil guide pipe 62. The second hydraulic rod 632 within the second hydraulic cylinder 631 is pushed out and abuts against the connecting block 422 of the test assembly 2, applying a unilateral lateral force. The distance sensor 26 collects oil film data under this lateral force, completing the unilateral lateral test. Simultaneously, as the loading plate 42 slides upward, the sliding rod 51 rebounds upward under the action of the return spring 52, and through the reverse transmission of the sleeve 56, rotating rod 53, and connecting rod 54... This causes the linkage slider 57 to slide in the opposite direction, pressing against the push rod 831 on the drive slider 8, pushing the drive slider 8 to slide. When the loading plate 42 slides down again, the stop block 412 slides down accordingly. The linkage slider 57 drives the drive slider 8 to continue sliding. At this time, one side of the drive slider 8 will press against the stop block 412, thereby pushing the column 41 to slide along the linear guide rail 7. When the column 41 slides, it applies a lateral force to the static pressure slider 23 in the opposite direction to the second loading unit 6 through the connecting block 422. The distance sensor 26 collects the oil film data in the opposite lateral direction. After all three directions of testing are completed, the loading assembly 4 is reset, waiting for the next test cycle.

[0043] 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 special testing component for testing the stiffness of hydrostatic slider oil film, characterized in that: The system includes a workbench (1), on which a test assembly (2), a support frame (3), a loading assembly (4), a first loading unit (5), and a second loading unit (6) are mounted. The loading assembly (4) includes a column (41) and a loading plate (42). The column (41) is slidably mounted on the workbench (1) and is located on one side of the test assembly (2). The loading plate (42) is slidably mounted on one side of the column (41) and is located on the top of the test assembly (2). The top of the support frame (3) is also located on the top of the support frame (6). Located above the loading plate (42); a sliding cavity (421) is provided in the bottom of the loading plate (42), and a connecting block (422) is slidably arranged in the sliding cavity (421); the first loading unit (5) is arranged inside the workbench (1), and the first loading unit (5) is used to push the column (41) to slide; the second loading unit (6) is located on the other side of the test assembly (2), and the second loading unit (6) is used to abut against the side of the connecting block (422); a distance sensor (26) is provided on the test assembly (2); Two sets of linear guide rails (7) are provided between the column (41) and the workbench (1); a groove (411) is provided in the middle part of the bottom of the column (41), and a stop block (412) is slidably provided in the groove (411); a drive slider (8) is provided between the two sets of linear guide rails (7), and the two sides of the drive slider (8) are slidably connected to the two sets of linear guide rails (7); a positioning groove (81) is provided on the drive slider (8); A drive hose (9) is provided on the groove (411) and the sliding cavity (421), and the two ends of the drive hose (9) are respectively connected to the groove (411) and the sliding cavity (421); The first loading unit (5) includes a sliding rod (51), a return spring (52), a rotating rod (53), a connecting rod (54), a support rod (55), a sleeve (56), and a connecting slider (57). The sliding rod (51) is longitudinally slidably disposed on the worktable (1), and the sliding rod (51) is located below the loading plate (42) on one side of the column (41). The return spring (52) is sleeved on the sliding rod (51), and in its natural state, one end of the return spring (52) is fixedly connected to the worktable (1). The other end of the return spring (52) is fixedly connected to the sliding rod (51); one end of the support rod (55) is fixedly connected to the bottom of the workbench (1), and the rotating rod (53) is rotatably connected to the other end of the support rod (55); the sleeve (56) is rotatably connected to the bottom of the sliding rod (51), one end of the rotating rod (53) is slidably disposed in the sleeve (56), and the other end of the rotating rod (53) is rotatably disposed on the connecting slider (57); the top of the connecting slider (57) is slidably connected to the bottom of the driving slider (8); The second loading unit (6) includes a pressurizing component (61), an oil guide pipe (62), and a driving component (63). The base of the pressurizing component (61) is slidably mounted on the support frame (3), and the working end of the pressurizing component (61) is located on the top of the loading plate (42). The base of the driving component (63) is fixedly connected to the worktable (1), and the working end of the driving component (63) is located on one side of the connecting block (422). The working end of the driving component (63) has the freedom to move towards the side of the connecting block (422). The two ends of the oil guide pipe (62) are respectively connected to the pressurizing component (61) and the driving component (63). The test assembly (2) includes a support frame (21), a static pressure guide rail (22), a static pressure slider (23), two sets of side slide rails (24), and two sets of pressure plates (25). The static pressure guide rail (22) is mounted on the support frame (21), the two sets of side slide rails (24) are mounted on both sides of the static pressure guide rail (22), the two sets of pressure plates (25) are mounted on the two sets of side slide rails (24), the static pressure slider (23) is mounted on the static pressure guide rail (22), the static pressure slider (23) is located between the two sets of side slide rails (24), and the top of the static pressure slider (23) is detachably connected to the bottom of the connecting block (422). A loading hydraulic cylinder (31) is slidably mounted on the support frame (3), the base of the loading hydraulic cylinder (31) is mounted on the top of the support frame (3), and the working end of the loading hydraulic cylinder (31) is fixedly connected to the top of the loading plate (42).

2. The special testing component for testing the stiffness of hydrostatic slider oil film according to claim 1, characterized in that: The bottom end of the drive slider (8) is provided with a clearance groove (82), and a push assembly (83) is provided in the clearance groove (82); the push assembly (83) includes a push rod (831) and a tension spring (832), the push rod (831) is rotatably connected in the clearance groove (82); one end of the tension spring (832) is rotatably connected to the push rod (831), and the other end of the tension spring (832) is rotatably connected in the clearance groove (82).

3. The special testing component for testing the stiffness of hydrostatic slider oil film according to claim 1, characterized in that: The pressurization assembly (61) includes a first hydraulic cylinder (611) and a first hydraulic rod (612). The first hydraulic cylinder (611) is slidably mounted on the support frame (3). One end of the first hydraulic rod (612) is slidably mounted inside the first hydraulic cylinder (611), and the other end of the first hydraulic rod (612) is fixedly connected to the top of the loading plate (42).

4. The special testing component for hydrostatic slider oil film stiffness testing according to claim 1, characterized in that: The drive assembly (63) includes a second hydraulic cylinder (631) and a second hydraulic rod (632). The second hydraulic cylinder (631) is fixedly mounted on the worktable (1). One end of the second hydraulic rod (632) is slidably mounted inside the second hydraulic cylinder (631). The other end of the second hydraulic rod (632) has a degree of freedom to move toward the side of the connecting block (422).

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