Oil cylinder inner wall roughness detection equipment and method thereof

Abstract

The invention relates to the technical field of oil cylinder inner wall roughness detection and discloses oil cylinder inner wall roughness detection equipment and a method thereof.The oil cylinder inner wall roughness detection equipment comprises a supporting mechanism, a processing mechanism and a detection mechanism, the supporting mechanism comprises a base, and the base is used for bearing an oil cylinder; the processing mechanism comprises a moving part and a processing part, the moving part is used for driving the processing part to move, and the processing part comprises a cleaning piece used for cleaning the inner wall of the oil cylinder; the detection mechanism comprises a moving part and a detection part, the moving part is used for driving the detection part to move, the detection part comprises a detection head, and the detection head is perpendicular to the side wall of the oil cylinder and used for detecting the roughness of the inner wall of the oil cylinder. According to the oil cylinder inner wall roughness detection equipment provided by the embodiment of the invention, impurities on the inner wall of the oil cylinder are removed through the cleaning sheet, so that the impurities are prevented from interfering with the detection process, and the problem of misalignment of the detection result caused by the impurities in a traditional contact measurement method is solved.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic cylinder inner wall roughness detection technology, specifically relating to a hydraulic cylinder inner wall roughness detection device and method. Background Technology

[0002] As a key actuator in hydraulic systems, aerospace launch platforms, and automotive engines, the roughness of the inner wall of a hydraulic cylinder directly determines its sealing performance, motion accuracy, and service life. For example, excessive roughness on the inner wall of a multi-stage lifting hydraulic cylinder can lead to rapid wear of seals, hydraulic oil leakage, and even equipment malfunctions. Excessive roughness in the inner wall of an engine piston cylinder can result in serious consequences such as cylinder scoring and cylinder explosion. Therefore, hydraulic cylinder inner wall roughness testing has become a core aspect of quality control in the precision manufacturing field.

[0003] Currently, the mainstream roughness testing methods in the industry are mainly divided into three categories: contact measurement method, non-contact optical measurement method, and comparative measurement method. Among them, the contact measurement method is a commonly used testing method, which uses a stylus profilometer in mechanical sensors for detection. However, during the production process of the hydraulic cylinder, impurities such as oil stains or iron filings will adhere to its inner wall, which can easily affect the measurement accuracy and lead to inaccurate test results. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a hydraulic cylinder inner wall roughness detection device, which can clean the inner wall of the hydraulic cylinder to prevent impurities on the inner wall from affecting the detection results.

[0005] The cylinder inner wall roughness detection device of this invention includes: The support mechanism includes a base for supporting the hydraulic cylinder; A processing mechanism, comprising a moving component and a processing component, wherein the moving component is used to drive the processing component to move, and the processing component includes a cleaning plate for cleaning the inner wall of the oil cylinder; The testing mechanism includes a moving part and a testing part. The moving part is used to drive the testing part to move. The testing part includes a testing head, which is perpendicular to the side wall of the hydraulic cylinder and is used to test the roughness of the inner wall of the hydraulic cylinder.

[0006] The cylinder inner wall roughness testing device of this invention removes impurities from the cylinder inner wall using a cleaning plate, avoiding interference from impurities in the testing process. This solves the problem of inaccurate test results caused by impurities in traditional contact measurement methods, ensuring the reliability of the test data. The design of the testing head perpendicular to the cylinder side wall ensures that the contact method between the testing head and the inner wall conforms to measurement standards, improving the accuracy of roughness testing and providing reliable quality data for equipment sealing performance, motion accuracy, and service life. The cleaning plate and testing head are driven by moving and rotating components respectively, achieving automated integration of cleaning and testing, reducing manual intervention, and improving testing efficiency.

[0007] In some embodiments, the cylinder includes a cylinder body and a cavity with a top opening, and the moving member includes: Multiple first electric rods are disposed on the base. The first electric rods are used to drive the cleaning plate to move up and down, so as to drive the cleaning plate to move up and down in the cavity. A connecting plate is disposed on the top output end of a plurality of first electric poles; A rotary motor is mounted on the connecting plate and is used to drive the cleaning plate to rotate; The mounting rod is connected to the output end of the rotating motor, and the cleaning plate is disposed on the mounting rod.

[0008] In some embodiments, the processing unit further includes: A fixing sleeve is fixedly fitted onto the mounting rod; Multiple second electric rods are evenly arranged on the fixed sleeve along the circumferential direction. A mounting plate is provided at the end of each second electric rod away from the fixed sleeve. The cleaning plate is provided on the side of each mounting plate away from the mounting rod. The second electric rods are used to drive the cleaning plate to fit against the inner wall of the cavity.

[0009] In some embodiments, the processing unit further includes: The spray box is located at the bottom end of the mounting rod and is situated below the cleaning plate. Multiple spray holes are evenly distributed on the spray box along the circumferential direction, and the spray holes face perpendicular to the side wall of the cavity. The spray holes are used to spray out cleaning liquid. A liquid supply channel is provided in the mounting rod and is connected to the spray box. A liquid supply component is provided at the other end of the liquid supply channel. The liquid supply channel is used to supply cleaning liquid to the spray box.

[0010] In some embodiments, the processing unit further includes: A bellows, which is sleeved on the mounting rod and located on the upper side of the cleaning plate; Multiple air holes are evenly distributed on the air box along the circumference. The air holes are oriented perpendicular to the side wall of the cavity. The air holes are used to blow out gas to accelerate the evaporation of cleaning liquid on the side wall of the cavity. An air supply channel is provided, which is located in the mounting rod and is connected to the air box. An air supply component is connected to the other end of the air supply channel. The air supply channel is used to supply gas to the air box.

[0011] In some embodiments, the detection element further includes a movable sleeve, which is fitted onto the mounting rod, and the detection head is disposed on the movable sleeve; After the processing component cleans the sidewall of the cavity, multiple cleaning plates are located at the bottom of the cavity and abut against the sidewall of the cavity so that the axis of the mounting rod is collinear with the axis of the hydraulic cylinder. The movable sleeve slides on the mounting rod to ensure that the detection head is perpendicular to the sidewall of the hydraulic cylinder during vertical movement.

[0012] In some embodiments, the detection element further includes a plurality of third electric rods uniformly arranged along the circumferential direction on the movable sleeve, each of the third electric rods having a detection head at one end away from the mounting rod, the third electric rod being used to drive the detection head to contact the side wall of the hydraulic cylinder.

[0013] In some embodiments, the moving component includes a plurality of fourth electric rods disposed on the base, the top ends of the plurality of fourth electric rods being connected to a moving plate, the moving plate being connected to the detection component, the moving plate being used to drive the detection component to move up and down, and the mounting rod passing through the moving plate.

[0014] In some embodiments, the moving component includes a drive motor disposed on the lower side of the movable plate, the output end of the drive motor being connected to a drive gear, a rotating block being rotatably connected to the lower side of the movable plate, the rotating block being sleeved on the mounting rod, the rotating block being connected to the movable plate, and a driven gear being fixedly sleeved on the rotating block, the driven gear meshing with the drive gear.

[0015] The method for detecting the roughness of the inner wall of a hydraulic cylinder according to embodiments of the present invention utilizes the hydraulic cylinder inner wall roughness detection device of any of the above embodiments, and the method includes the following steps: Step 1: The hydraulic cylinder to be tested is supported by the base of the support mechanism to keep the hydraulic cylinder in a stable position; Step 2: Activate the moving part of the processing mechanism, which drives the cleaning plate of the processing part to move along the inner wall of the oil cylinder, and cleans the inner wall of the oil cylinder through the cleaning plate; Step 3: After cleaning, start the moving part of the detection mechanism. The moving part drives the detection head of the detection component to move, so that the detection head always remains perpendicular to the side wall of the oil cylinder. The roughness of the inner wall of the oil cylinder is detected by the detection head.

[0016] The cylinder inner wall roughness detection method of this invention uses a base to stably support the cylinder, providing a solid foundation for cleaning and detection and avoiding the impact of cylinder displacement on the operation. A cleaning plate is used to pre-treat the inner wall, removing impurities and interference, thus solving the problem of inaccurate results caused by impurities in traditional detection and ensuring the reliability of the detection data. The detection head is kept perpendicular to the side wall, ensuring that the detection contact meets measurement standards, improving the accuracy of roughness detection and providing a reliable basis for equipment quality control. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the present invention.

[0018] Figure 2 This is the left view of the present invention.

[0019] Figure 3 This is the present invention. Figure 2 Isometric side sectional view at point AA.

[0020] Figure 4 This is the front view of the present invention.

[0021] Figure 5 This is the present invention. Figure 4 Isometric side sectional view at point BB.

[0022] Figure 6 This is the present invention. Figure 5 A magnified view of a section at point C.

[0023] Figure 7 This is the present invention. Figure 5 A magnified view of a section at point D.

[0024] Figure 8 This is the present invention. Figure 5 A magnified view of a section at point E in the middle.

[0025] Figure 9 This is a schematic diagram of the clamping component in this invention.

[0026] Figure label: 1. Support mechanism; 11. Base; 12. Clamping component; 121. Electric actuator; 122. Clamping plate; 2. Hydraulic cylinder; 21. Cylinder body; 22. Cavity; 3. Processing mechanism; 31. Moving part; 311. First electric rod; 312. Connecting plate; 313. Rotating motor; 314. Mounting rod; 32. Processing component; 321. Cleaning plate; 322. Fixing sleeve; 323. Second electric rod; 324. Mounting plate; 325. Spray box; 326. Spray hole; 327. Liquid supply channel; 328. Air box; 329. Air blowing hole; 3210. Air supply channel; 33. Liquid supply component; 331. Liquid supply tank; 332. Liquid supply pipe; 34. Air supply component; 341. Air supply tank; 342. Air supply pipe; 4. Detection mechanism; 41. Moving parts; 411. Fourth electric rod; 412. Moving plate; 413. Drive motor; 414. Drive gear; 415. Rotating block; 416. Driven gear; 42. Detection piece; 421. Detection head; 422. Moving sleeve; 423. Third electric rod. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1-9 As shown, the cylinder inner wall roughness detection device of this invention includes: Support mechanism 1, which includes a base 11 for supporting the hydraulic cylinder 2; Processing mechanism 3 includes a moving part 31 and a processing part 32. The moving part 31 is used to drive the processing part 32 to move. The processing part 32 includes a cleaning plate 321, which is used to clean the inner wall of the oil cylinder 2. The detection mechanism 4 includes a moving part 41 and a detection part 42. The moving part 41 is used to drive the detection part 42 to move. The detection part 42 includes a detection head 421, which is perpendicular to the side wall of the oil cylinder 2. The detection head 421 is used to detect the roughness of the inner wall of the oil cylinder 2.

[0029] The cylinder inner wall roughness testing device of this invention removes impurities from the cylinder inner wall using a cleaning plate, avoiding interference from impurities in the testing process. This solves the problem of inaccurate test results caused by impurities in traditional contact measurement methods, ensuring the reliability of the test data. The design of the testing head perpendicular to the cylinder side wall ensures that the contact method between the testing head and the inner wall conforms to measurement standards, improving the accuracy of roughness testing and providing reliable quality data for equipment sealing performance, motion accuracy, and service life. The cleaning plate and testing head are driven by moving and rotating components respectively, achieving automated integration of cleaning and testing, reducing manual intervention, and improving testing efficiency.

[0030] Specifically, the base 11 of the support mechanism 1 first stably supports the oil cylinder 2, providing basic support for subsequent cleaning and testing; the moving part 31 of the processing mechanism 3 drives the processing part 32 to move to the corresponding position on the inner wall of the oil cylinder 2, and uses the cleaning plate 321 of the processing part 32 to remove oil stains, iron filings and other impurities attached to the inner wall of the oil cylinder 2; after the impurities are cleaned, the moving part 41 of the testing mechanism 4 drives the testing part 42 to move, so that the testing head 421 of the testing part 42 (perpendicular to the side wall of the oil cylinder 2) contacts the inner wall of the oil cylinder 2, and finally completes the roughness test.

[0031] Furthermore, the detection head 421 can be selected as a mechanical sensor such as a stylus profilometer or a piezoelectric sensor.

[0032] In some embodiments, the hydraulic cylinder 2 includes a cylinder body 21 and a cavity 22 with a top opening, and the moving member 31 includes: Multiple first electric rods 311 are mounted on the base 11. The first electric rods 311 are used to drive the cleaning plate 321 to move up and down, so as to drive the cleaning plate 321 to move up and down in the cavity 22. Connecting plate 312 is disposed on the top output end of multiple first electric rods 311; A rotating motor 313 is mounted on a connecting plate 312 and is used to drive the cleaning disc 321 to rotate. Mounting rod 314 is connected to the output end of rotating motor 313, and cleaning plate 321 is mounted on mounting rod 314.

[0033] The cylinder inner wall roughness detection device of this invention uses a first electric rod to drive a cleaning plate to move up and down, achieving cleaning coverage of different height positions in the cylinder cavity and avoiding cleaning dead corners; a rotating motor drives the cleaning plate to rotate, enhancing the frictional contact effect between the cleaning plate and the inner wall and improving the removal efficiency of impurities such as oil stains and iron filings; a connecting plate integrates the driving force of multiple first electric rods to ensure the stability and synchronization of the cleaning plate's up and down movement, ensuring uniform cleaning effect.

[0034] Specifically, multiple first electric rods 311 are activated, and their top output ends drive the connecting plate 312 to move up and down, which in turn drives the cleaning plate 321 to move up and down in the cavity 22 through the mounting rod 314; at the same time, the rotating motor 313 is turned on, which drives the cleaning plate 321 to rotate through the mounting rod 314, so that the cleaning plate 321 achieves a compound motion of up and down movement and rotation in the cavity 22, thoroughly cleaning the impurities on the inner wall of the cavity 22.

[0035] In some embodiments, the processing unit 32 further includes: The fixing sleeve 322 is fixedly fitted onto the mounting rod 314; Multiple second electric rods 323 are evenly arranged on the fixed sleeve 322 along the circumferential direction. The end of each second electric rod 323 away from the fixed sleeve 322 is provided with a mounting plate 324. Each mounting plate 324 is provided with a cleaning plate 321 on the side away from the mounting rod 314. The second electric rods 323 are used to drive the cleaning plate 321 to fit against the inner wall of the cavity 22.

[0036] The cylinder inner wall roughness detection device of this invention uses a second electric rod to drive a cleaning plate to adhere to the inner wall. The extension distance of the cleaning plate can be flexibly adjusted according to the inner diameter of the cylinder cavity to adapt to the cleaning needs of cylinders of different specifications. Multiple second electric rods are evenly arranged around the circumference of the fixed sleeve to ensure that the cleaning plate is evenly distributed around the inner wall of the cavity, ensuring consistent cleaning force in all directions and avoiding incomplete cleaning in some areas. The second electric rods and the cleaning plate are connected by a mounting plate to increase the installation stability of the cleaning plate, prevent the cleaning plate from falling off or shifting during the cleaning process, and ensure the reliability of the cleaning action.

[0037] Specifically, the fixing sleeve 322 is fixedly mounted on the mounting rod 314, providing a stable mounting base for multiple second electric rods 323; when the second electric rod 323 is activated, its output end pushes the mounting plate 324 to move away from the mounting rod 314, thereby driving the cleaning plate 321 to fit tightly against the inner wall of the cavity 22 of the oil cylinder 2; combined with the up-and-down movement driven by the first electric rod 311 and the rotational movement driven by the rotating motor 313, the cleaning plate 321 thoroughly removes impurities from the inner wall of the cavity 22 under the combined action of "fitting against the inner wall of the cavity 22 + up-and-down movement + rotation".

[0038] In some embodiments, the processing unit 32 further includes: Spray box 325 is located at the bottom of mounting rod 314 and is located below cleaning plate 321. Multiple nozzles 326 are evenly distributed on the spray box 325 along the circumferential direction. The nozzles 326 face the side wall perpendicular to the cavity 22 and are used to spray out cleaning liquid. The liquid supply channel 327 is located in the mounting rod 314 and is connected to the spray box 325. The other end of the liquid supply channel 327 is connected to a liquid supply component 33. The liquid supply channel 327 is used to supply cleaning liquid to the spray box 325.

[0039] The cylinder inner wall roughness detection device of this invention achieves stable delivery and storage of cleaning fluid through the cooperation of the spray box and the liquid supply channel, providing continuous liquid assistance for cleaning the inner wall of the cavity; the design of the spray holes being evenly distributed around the circumference and oriented perpendicular to the side wall of the cavity ensures that the cleaning fluid evenly covers the inner wall of the cavity, softening stubborn impurities in advance and reducing the cleaning difficulty of the cleaning plate; the liquid supply channel being built into the mounting rod avoids the pipeline being messy and affecting the cleaning action, while ensuring the sealing of the cleaning fluid delivery path and preventing leakage and pollution.

[0040] Specifically, when the liquid supply component 33 is activated, the cleaning fluid is delivered to the spray box 325 at the bottom of the mounting rod 314 through the liquid supply channel 327 opened in the mounting rod 314. The spray box 325 sprays the cleaning fluid in a direction perpendicular to the side wall of the cylinder 2 cavity 22 through the spray holes 326 evenly opened in the circumferential direction, pre-wetting and initially removing impurities from the inner wall of the cavity 22. Combined with the combined actions of the second electric rod 323 driving the cleaning plate 321 to adhere to the inner wall of the cavity 22, the first electric rod 311 driving the cleaning plate 321 to move up and down, and the rotating motor 313 driving the cleaning plate 321 to rotate, the cleaning plate 321, with the assistance of the cleaning fluid, thoroughly removes oil stains, iron filings and other impurities from the inner wall of the cavity 22.

[0041] In some embodiments, the processing unit 32 further includes: The bellows 328 is mounted on the mounting rod 314 and is located on the upper side of the cleaning plate 321. Multiple air holes 329 are evenly arranged along the circumference on the air direction 328. The air holes 329 are oriented perpendicular to the side wall of the cavity 22. The air holes 329 are used to blow out gas to accelerate the evaporation of cleaning liquid on the side wall of the cavity 22. The gas supply channel 3210 is located in the mounting rod 314 and is connected to the air box 328. The other end of the gas supply channel 3210 is connected to a gas supply component 34. The gas supply channel 3210 is used to supply gas to the air box 328.

[0042] The cylinder inner wall roughness detection device of this invention achieves stable gas delivery and distribution through the cooperation of a bellows and an air supply channel, providing continuous airflow support for the evaporation of cleaning fluid. The design of the air blowing holes, evenly distributed along the circumference and oriented perpendicular to the sidewall of the cavity, ensures that the gas acts uniformly on all areas of the inner wall of the cavity, avoiding localized cleaning fluid residue and ensuring uniform drying of the inner wall. The air supply channel is built into the mounting rod, eliminating interference with the liquid supply channel, simplifying the overall structural layout, and preventing pipe entanglement from affecting equipment operation. Gas blowing accelerates the evaporation of cleaning fluid, preventing cleaning fluid residue from affecting the contact state between the detection head and the inner wall, further improving the accuracy of the roughness detection results.

[0043] Specifically, after the cleaning fluid-assisted cleaning plate 321 removes impurities from the inner wall of the cavity 22, the air supply component 34 is activated, and gas is delivered through the air supply channel 3210 opened in the mounting rod 314 to the bellows 328 sleeved on the mounting rod 314; the bellows 328 blows gas in a direction perpendicular to the side wall of the cavity 22 through the blowing holes 329 evenly opened in the circumferential direction; combined with the first electric rod 311 driving the bellows 328 to move up and down, the gas fully covers the inner wall of the cavity 22, accelerates the evaporation of residual cleaning fluid, and prepares for the subsequent roughness detection by the detection head 421.

[0044] In some embodiments, the detection element 42 further includes a movable sleeve 422, which is sleeved on the mounting rod 314, and the detection head 421 is disposed on the movable sleeve 422; After the processing component 32 cleans the side wall of the cavity 22, multiple cleaning plates 321 are located at the bottom of the cavity 22. The multiple cleaning plates 321 abut against the side wall of the cavity 22 so that the axis of the mounting rod 314 is collinear with the axis of the oil cylinder 2. The moving sleeve 422 slides on the mounting rod 314 to ensure that the detection head 421 is perpendicular to the side wall of the oil cylinder 2 during vertical movement.

[0045] The cylinder inner wall roughness testing device of this invention uses a cleaning plate to abut against the side wall of the cavity to accurately calibrate the coaxiality of the mounting rod and the cylinder, providing a stable and reliable testing benchmark for the testing head. A movable sleeve slides on the mounting rod, relying on the guiding effect of the mounting rod to ensure the stability of the vertical movement trajectory of the testing head and ensure perpendicular contact between the testing head and the inner wall. The mounting rod combines cleaning and testing guidance functions, integrating the benchmark positioning for cleaning and testing, simplifying the equipment structure and improving overall operational coordination. By ensuring the testing head is always perpendicular to the cylinder side wall, testing errors caused by contact angle deviations are avoided, further improving the accuracy of roughness testing data.

[0046] Specifically, after the processing component 32 completes the cleaning of the side wall of the cavity 22, multiple cleaning plates 321 move to the bottom of the cavity 22 and abut against the side wall of the cavity 22, so that the axis of the mounting rod 314 is collinear with the axis of the hydraulic cylinder 2, and a detection benchmark is established; the movable sleeve 422 of the detection component 42 is fitted on the mounting rod 314, and the detection head 421 is set on the movable sleeve 422; the moving component 41 drives the movable sleeve 422 to slide on the mounting rod 314. Relying on the benchmark that the mounting rod 314 is collinear with the hydraulic cylinder 2, it is ensured that the detection head 421 is always perpendicular to the side wall of the hydraulic cylinder 2 during vertical movement, and the roughness detection of the inner wall of the cavity 22 is completed.

[0047] In some embodiments, the detection element 42 further includes a plurality of third electric rods 423 uniformly arranged on the movable sleeve 422 along the circumferential direction. Each third electric rod 423 has a detection head 421 at one end away from the mounting rod 314. The third electric rod 423 is used to drive the detection head 421 to contact the side wall of the oil cylinder 2.

[0048] The cylinder inner wall roughness detection device of this invention uses a third electric rod to drive the detection head to contact the sidewall. The extension distance of the detection head can be flexibly adjusted according to the inner diameter of the cylinder to adapt to the detection needs of cylinders of different specifications. By evenly distributing multiple third electric rods along the circumference, the detection head can simultaneously contact different positions of the inner wall, allowing for the simultaneous acquisition of multiple sets of detection data and improving the comprehensiveness of the detection. Through the cooperation of the moving sleeve and the mounting rod, and relying on the guiding effect of the mounting rod, the vertical movement trajectory of the detection head is ensured to be stable, ensuring the perpendicular contact state between the detection head and the inner wall. Through precise contact between the detection head and the sidewall, the detection results are avoided from being affected by excessively loose or tight contact, further improving the reliability of the roughness detection data.

[0049] Specifically, after the processing component 32 cleans the side wall of the cavity 22, the cleaning plate 321 moves to the bottom of the cavity 22 and abuts against the side wall, so that the axis of the mounting rod 314 is collinear with the axis of the cylinder 2; the moving sleeve 422 of the detection component 42 is fitted on the mounting rod 314, and multiple third electric rods 423 evenly distributed along the circumference are activated, and their output ends push the detection head 421 to move away from the mounting rod 314 until the detection head 421 contacts the side wall of the cylinder 2; the moving component 41 drives the moving sleeve 422 to slide on the mounting rod 314, and the detection head 421 remains perpendicular to the side wall of the cylinder 2 during the vertical movement, completing the comprehensive detection of the roughness of the inner wall of the cavity 22.

[0050] In some embodiments, the moving member 41 includes a plurality of fourth electric rods 411 disposed on the base 11. The top ends of the plurality of fourth electric rods 411 are connected to a moving plate 412. The moving plate 412 is connected to the detection member 42 and is used to drive the detection member 42 to move up and down. The mounting rod 314 passes through the moving plate 412.

[0051] The cylinder inner wall roughness detection device of this invention provides a stable driving force through a fourth electric rod, which drives the moving plate to move up and down, ensuring smooth movement of the detection part and avoiding detection errors caused by movement fluctuations of the detection head. By integrating the driving forces of multiple fourth electric rods through the moving plate, the force on the detection part is uniform, ensuring the straightness of the vertical movement trajectory of the detection head and improving detection consistency. Through the through-fitting of the moving plate and the mounting rod, relying on the coaxial reference of the mounting rod, the movement direction of the detection part is further constrained, ensuring that the detection head is always perpendicular to the cylinder sidewall. Through the synergistic effect of multiple fourth electric rods, the stability and load capacity of the drive structure are enhanced, adapting to detection parts of different weights and expanding the applicability of the equipment.

[0052] Specifically, after the processing component 32 cleans and dries the inner wall of the cavity 22, and the cleaning plate 321 abuts against the bottom side wall of the cavity 22 so that the mounting rod 314 is coaxial with the cylinder 2, the fourth electric rod 411 is activated; the tops of the multiple fourth electric rods 411 drive the commonly connected moving plate 412 to move up and down. Since the moving plate 412 is connected to the detection component 42 and the mounting rod 314 passes through the moving plate 412, it drives the moving sleeve 422 of the detection component 42 to slide up and down synchronously along the mounting rod 314; the third electric rod 423 of the detection component 42 drives the detection head 421 to contact the side wall of the cylinder 2. Under the drive of the moving plate 412, the detection head 421 moves vertically and remains perpendicular to the side wall of the cylinder 2, completing the roughness detection of the inner wall of the cavity 22.

[0053] In some embodiments, the moving component 41 includes a drive motor 413 disposed on the lower side of the moving plate 412, the output end of the drive motor 413 is connected to a drive gear 414, a rotating block 415 is rotatably connected to the lower side of the moving plate 412, the rotating block 415 is sleeved on the mounting rod 314, the rotating block 415 is connected to the moving sleeve 422, and a driven gear 416 is fixedly sleeved on the rotating block 415, the driven gear 416 meshing with the drive gear 414.

[0054] The cylinder inner wall roughness detection device of this invention provides stable rotational power through a drive motor, providing continuous driving force for the circumferential detection of the detection head and ensuring uniform and controllable rotational speed. The meshing transmission between the drive gear and the driven gear achieves precise power transmission, avoiding transmission slippage and ensuring a stable rotational trajectory of the detection head, thus improving detection consistency. A rotating block connects the driven gear and the moving sleeve, integrating rotational power and the detection component, allowing the rotational motion to be directly transmitted to the detection head, simplifying the transmission chain. Through the cooperation of the moving sleeve and the mounting rod, the coaxial reference of the mounting rod ensures that the detection head remains perpendicular to the cylinder sidewall during rotation, avoiding detection errors caused by angular deviations. The combination of rotational and vertical movements allows the detection head to fully cover all areas of the inner wall of the cavity, completely eliminating detection blind spots and improving the comprehensiveness of the detection.

[0055] Specifically, the drive motor 413 of the moving part 41 starts, and its output end drives the drive gear 414 to rotate. Since the drive gear 414 meshes with the driven gear 416 fixedly sleeved on the rotating block 415, it drives the rotating block 415 to rotate around the mounting rod 314. The rotating block 415 is connected to the movable sleeve 422, and the movable sleeve 422 is sleeved on the mounting rod 314. Therefore, the rotating block 415 drives the movable sleeve 422 and the detection head 421 to rotate synchronously. At the same time, the fourth electric rod 411 drives the movable plate 412 to move up and down, which drives the drive motor 413, the rotating block 415 and the movable sleeve 422 to move up and down as a whole. This allows the detection head 421 to fully detect the roughness of the inner wall of the cavity 22 in the combined motion of up and down movement and rotation.

[0056] In some embodiments, the liquid supply component 33 includes a liquid supply tank 331 rotatably sleeved on the mounting rod 314, the liquid supply tank 331 being connected to the liquid supply channel 327, the liquid supply tank 331 being connected to a liquid supply pipe 332, and the liquid supply pipe 332 being connected to an external liquid supply device.

[0057] The cylinder inner wall roughness detection device of this invention, through the design of rotating the liquid supply tank and mounting rod, achieves that the rotation of the mounting rod and the delivery of cleaning liquid do not interfere with each other, ensuring the continuity of liquid supply; through the connection of the liquid supply pipe to the external liquid supply device and the liquid supply tank, the cleaning liquid can be continuously replenished to meet the cleaning needs of long-term continuous detection.

[0058] Specifically, the external liquid supply device delivers cleaning fluid to the liquid supply tank 331 through the liquid supply pipe 332. The liquid supply tank 331 is rotatably mounted on the mounting rod 314 and connected to the liquid supply channel 327. When the mounting rod 314 rotates under the drive of the rotating motor 313, the liquid supply tank 331 remains fixed and does not rotate with the mounting rod 314 to avoid the liquid supply pipe 332 from getting tangled. The cleaning fluid is continuously delivered to the spray box 325 through the liquid supply channel 327 and sprayed out through the spray hole 326 to remove impurities from the inner wall of the cavity 22 by the auxiliary cleaning plate 321.

[0059] Furthermore, the cleaning solution can be alcohol.

[0060] In some embodiments, the air supply component 34 includes an air supply box 341 rotatably sleeved on the mounting rod 314. The air supply box 341 is connected to the air supply channel 3210. An air supply pipe 342 is connected to the air supply box 341 and is connected to an external air supply device.

[0061] The cylinder inner wall roughness detection device of this invention, through the design of rotating the air supply box and mounting rod, achieves that the rotation of the mounting rod and the gas delivery do not interfere with each other, ensuring the continuity of air supply; through the connection of the air supply pipe to the external air supply device and the air supply box, the gas can be continuously replenished to meet the drying requirements of long-term continuous detection.

[0062] Specifically, the external gas supply device supplies gas to the gas supply box 341 through the gas supply pipe 342. The gas supply box 341 is rotatably mounted on the mounting rod 314 and connected to the gas supply channel 3210. When the mounting rod 314 rotates under the drive of the rotating motor 313, the gas supply box 341 remains fixed and does not rotate with the mounting rod 314 to avoid the gas supply pipe 342 from getting tangled. The gas is continuously supplied to the air box 328 through the gas supply channel 3210 and sprayed out through the air blowing hole 329 to accelerate the evaporation of the cleaning liquid on the inner wall of the cavity 22.

[0063] In some embodiments, the support mechanism 1 further includes a clamping member 12, which includes: Multiple electric actuators 121 are evenly arranged on the base 11 along the circumferential direction; Multiple clamping plates 122 are provided, each corresponding to a multiple electric actuator 121. The clamping plates 122 are located at the output end of the electric actuator 121 and are used to clamp the hydraulic cylinder 2.

[0064] The cylinder inner wall roughness detection device of this invention uses an electric actuator to drive the clamping plate to move, which can flexibly adjust the clamping force and range according to the outer diameter of the cylinder to adapt to the fixing requirements of cylinders of different specifications. By evenly distributing multiple clamping plates along the circumference, the clamping force on the cylinder is uniform and symmetrical, avoiding excessive local force that could cause cylinder deformation or displacement. By having the clamping plates directly abut against the outer wall of the cylinder, the contact area with the cylinder is increased, improving clamping stability and preventing cylinder displacement during cleaning and testing.

[0065] Specifically, the hydraulic cylinder 2 is placed on the base 11 of the support mechanism 1 to provide a basis for clamping and positioning; multiple electric push rods 121 evenly arranged on the base 11 along the circumference are activated, and their output ends push the corresponding clamping plates 122 to move closer to the hydraulic cylinder 2; the multiple clamping plates 122 simultaneously abut against the outer wall of the hydraulic cylinder 2 to complete the clamping and fixing of the hydraulic cylinder 2, providing a stable state for the subsequent cleaning of the processing part 32 and the inspection of the inspection part 42.

[0066] The method for detecting the roughness of the inner wall of a hydraulic cylinder according to embodiments of the present invention utilizes the hydraulic cylinder inner wall roughness detection device of any of the above embodiments, and the method includes the following steps: Step 1: Support the hydraulic cylinder to be tested on the base of the support mechanism to keep the cylinder in a stable position; Step 2: Activate the moving part of the processing mechanism, which drives the cleaning plate of the processing part to move along the inner wall of the oil cylinder, and cleans the inner wall of the oil cylinder through the cleaning plate. Step 3: After cleaning, start the moving parts of the testing mechanism. The moving parts drive the testing head of the testing component to move, so that the testing head always remains perpendicular to the side wall of the oil cylinder. The roughness of the inner wall of the oil cylinder is tested through the testing head.

[0067] The cylinder inner wall roughness detection method of this invention uses a base to stably support the cylinder, providing a solid foundation for cleaning and detection and avoiding the impact of cylinder displacement on the operation. A cleaning plate is used to pre-treat the inner wall, removing impurities and interference, thus solving the problem of inaccurate results caused by impurities in traditional detection and ensuring the reliability of the detection data. The detection head is kept perpendicular to the side wall, ensuring that the detection contact meets measurement standards, improving the accuracy of roughness detection and providing a reliable basis for equipment quality control.

[0068] Specifically, Step 1: Place the hydraulic cylinder 2 to be tested on the base 11 of the support mechanism 1. The base 11 supports the hydraulic cylinder 2 and keeps it in a stable position, laying the foundation for subsequent processes. Step 2: Start the moving part 31 of the processing mechanism 3. The moving part 31 drives the cleaning plate 321 of the processing part 32 to move along the inner wall of the cavity 22 of the oil cylinder 2. The cleaning plate 321 removes the oil stains, iron filings and other impurities attached to the inner wall, thus completing the cleaning process. Step 3: After cleaning, start the moving part 41 of the detection mechanism 4. The moving part 41 drives the detection head 421 of the detection part 42 to move. Based on the structural design of the equipment, the detection head 421 is always kept perpendicular to the side wall of the oil cylinder 2. Data is collected through the detection head 421 to complete the roughness detection of the inner wall of the oil cylinder 2.

[0069] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0072] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0073] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A device for detecting the roughness of the inner wall of a hydraulic cylinder, characterized in that, include: Support mechanism (1), the support mechanism (1) includes a base (11), the base (11) is used to support the oil cylinder (2); The processing mechanism (3) includes a moving part (31) and a processing part (32). The moving part (31) is used to drive the processing part (32) to move. The processing part (32) includes a cleaning plate (321) for cleaning the inner wall of the oil cylinder (2). The detection mechanism (4) includes a moving part (41) and a detection part (42). The moving part (41) is used to drive the detection part (42) to move. The detection part (42) includes a detection head (421). The detection head (421) is perpendicular to the side wall of the oil cylinder (2). The detection head (421) is used to detect the roughness of the inner wall of the oil cylinder (2).

2. The cylinder inner wall roughness testing device according to claim 1, characterized in that, The hydraulic cylinder (2) includes a cylinder body (21) and a cavity (22) with a top opening, and the moving part (31) includes: Multiple first electric rods (311) are disposed on the base (11). The first electric rods (311) are used to drive the cleaning plate (321) to move up and down, so as to drive the cleaning plate (321) to move up and down in the cavity (22). A connecting plate (312) is disposed on the top output end of a plurality of first electric poles (311); A rotating motor (313) is mounted on the connecting plate (312) and is used to drive the cleaning plate (321) to rotate. Mounting rod (314), which is connected to the output end of the rotating motor (313), and cleaning plate (321) is disposed on the mounting rod (314).

3. The cylinder inner wall roughness detection device according to claim 2, characterized in that, The processing unit (32) further includes: A fixing sleeve (322) is fixedly sleeved on the mounting rod (314); Multiple second electric rods (323) are evenly arranged on the fixed sleeve (322) along the circumferential direction. The end of each second electric rod (323) away from the fixed sleeve (322) is provided with a mounting plate (324). The side of each mounting plate (324) away from the mounting rod (314) is provided with the cleaning plate (321). The second electric rods (323) are used to drive the cleaning plate (321) to fit against the inner wall of the cavity (22).

4. The cylinder inner wall roughness testing device according to claim 3, characterized in that, The processing unit (32) further includes: Spray box (325), the spray box (325) is set at the bottom end of the mounting rod (314), the spray box (325) is located on the lower side of the cleaning plate (321); Multiple spray holes (326) are evenly distributed on the spray box (325) along the circumferential direction. The spray holes (326) face the side wall perpendicular to the cavity (22). The spray holes (326) are used to spray out cleaning liquid. Liquid supply channel (327) is provided in the mounting rod (314). The liquid supply channel (327) is connected to the spray box (325). The other end of the liquid supply channel (327) is connected to a liquid supply component (33). The liquid supply channel (327) is used to supply cleaning liquid to the spray box (325).

5. The cylinder inner wall roughness testing device according to claim 4, characterized in that, The processing unit (32) further includes: A bellows (328) is sleeved on the mounting rod (314) and the bellows (328) is located on the upper side of the cleaning plate (321); Multiple air holes (329) are evenly distributed on the bellows (328) along the circumferential direction. The air holes (329) are oriented perpendicular to the side wall of the cavity (22). The air holes (329) are used to blow out gas to accelerate the evaporation of cleaning liquid on the side wall of the cavity (22). An air supply channel (3210) is provided in the mounting rod (314). The air supply channel (3210) is connected to the bellows (328). An air supply component (34) is provided at the other end of the air supply channel (3210). The air supply channel (3210) is used to supply gas to the bellows (328).

6. The cylinder inner wall roughness testing device according to claim 5, characterized in that, The detection component (42) further includes a movable sleeve (422), which is sleeved on the mounting rod (314), and the detection head (421) is disposed on the movable sleeve (422); After the processing component (32) cleans the side wall of the cavity (22), multiple cleaning plates (321) are located at the bottom of the cavity (22). The multiple cleaning plates (321) abut against the side wall of the cavity (22) so that the axis of the mounting rod (314) is collinear with the axis of the oil cylinder (2). The moving sleeve (422) slides on the mounting rod (314) to ensure that the detection head (421) is perpendicular to the side wall of the oil cylinder (2) during vertical movement.

7. The cylinder inner wall roughness detection device according to claim 6, characterized in that, The detection component (42) also includes a plurality of third electric rods (423) evenly arranged on the movable sleeve (422) along the circumferential direction. Each third electric rod (423) has a detection head (421) at one end away from the mounting rod (314). The third electric rod (423) is used to drive the detection head (421) to contact the side wall of the oil cylinder (2).

8. The cylinder inner wall roughness testing device according to claim 7, characterized in that, The moving part (41) includes a plurality of fourth electric rods (411) disposed on the base (11). The top ends of the plurality of fourth electric rods (411) are connected to a moving plate (412). The moving plate (412) is connected to the detection element (42). The moving plate (412) is used to drive the detection element (42) to move up and down. The mounting rod (314) passes through the moving plate (412).

9. The cylinder inner wall roughness testing device according to claim 8, characterized in that, The moving part (41) includes a drive motor (413) disposed on the lower side of the moving plate (412). The output end of the drive motor (413) is connected to a drive gear (414). A rotating block (415) is rotatably connected to the lower side of the moving plate (412). The rotating block (415) is sleeved on the mounting rod (314). The rotating block (415) is connected to the moving sleeve (422). A driven gear (416) is fixedly sleeved on the rotating block (415). The driven gear (416) meshes with the drive gear (414).

10. A method for detecting the roughness of the inner wall of a hydraulic cylinder, comprising the hydraulic cylinder inner wall roughness detection equipment according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: The hydraulic cylinder to be tested is supported by the base of the support mechanism to keep the hydraulic cylinder in a stable position; Step 2: Activate the moving part of the processing mechanism, which drives the cleaning plate of the processing part to move along the inner wall of the oil cylinder, and cleans the inner wall of the oil cylinder through the cleaning plate; Step 3: After cleaning, start the moving part of the detection mechanism. The moving part drives the detection head of the detection component to move, so that the detection head always remains perpendicular to the side wall of the oil cylinder. The roughness of the inner wall of the oil cylinder is detected by the detection head.

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