Hydraulic test bench

Abstract

The invention relates to the technical field of hydraulic testing, in particular to a hydraulic testing table which comprises a box cover and a hydraulic telescopic rod. The box body is rotationally connected with a box cover; a hydraulic telescopic rod is fixedly connected to the box body; the telescopic end of the hydraulic telescopic rod is fixedly connected with a first connecting block. The box body is fixedly connected with a connecting block II; an electric push rod is fixedly connected to the connecting block I; the telescopic end of the electric push rod is fixedly connected with a semicircular ring I; a second semicircular ring is fixedly connected to the first semicircular ring. The second semicircular ring is slidably connected with a sliding block in a damping mode. A scraping block is connected to the sliding block and makes contact with the second semicircular ring. Through cooperation of the first semicircular ring, the second semicircular ring, the sliding block and the scraping block, hydraulic oil remaining on the surface of the movable part is scraped and collected, so that the content of the collected hydraulic oil is close to the actual leakage amount as much as possible, the measured sealing performance is more accurate, and the problem that the error of a test result is large due to the fact that the hydraulic oil is left on the surface of the movable part is solved.

Description

Technical Field

[0001] This invention relates to the technical field of hydraulic testing. More specifically, this invention relates to a hydraulic testing bench. Background Technology

[0002] Actuators are the main actuators of an aircraft's hydraulic system, affecting the performance of various aspects such as the landing gear, wheel well doors, flaps, and speed brakes.

[0003] During the sealing test of aircraft actuators, their sealing performance is typically evaluated by repeatedly compressing and stretching the actuator and collecting the leaked hydraulic oil. However, due to the large diameter of the actuator, leaked hydraulic oil tends to adhere to the surface of the actuator rod and is difficult to drip off naturally. If dust or impurities are also present on the surface of the actuator rod, the hydraulic oil will mix with them to form a viscous substance, further hindering the oil from falling and being effectively collected. This can lead to a lower measured leakage rate than the actual leakage value, potentially causing a misjudgment of the actuator's sealing condition. Summary of the Invention

[0004] To overcome the drawback that due to the large diameter of the actuator cylinder, leaked hydraulic oil tends to adhere to the surface of the moving rod and is difficult to drip off naturally, resulting in the measured leakage amount being lower than the actual leakage value, which may lead to misjudgment of the sealing status of the actuator cylinder, this invention provides a hydraulic test bench.

[0005] The technical implementation of this invention is as follows: A hydraulic test bench includes a chassis, a housing, and a control panel fixed to the housing; the housing is fixedly attached to the chassis; it also includes a cover, a hydraulic telescopic rod, a first connecting block, a second connecting block, an electric push rod, a first semicircular ring, a second semicircular ring, a slider, a scraper, and a collection assembly; the cover is rotatably connected to the housing; the hydraulic telescopic rod is fixedly attached to the housing; the telescopic end of the hydraulic telescopic rod is fixedly attached to the first connecting block; the second connecting block is fixedly attached to the housing; the electric push rod is fixedly attached to the first connecting block; the telescopic end of the electric push rod is fixedly attached to the first semicircular ring; the second semicircular ring is fixedly attached to the first semicircular ring; the second semicircular ring is slidably connected to the second semicircular ring with damping; a scraper is connected to the slider, and the scraper contacts the second semicircular ring; a collection assembly is connected to the housing, and the collection assembly is used to collect hydraulic oil.

[0006] As a further preferred embodiment, the collection component includes a housing and a connecting block three; the housing is slidably connected to the housing; the connecting block three is fixedly connected to the housing, and the connecting block three is slidably connected to the housing.

[0007] As a further preferred option, it also includes a lever; the lever is fixed to the cover.

[0008] Based on the above technical solution, the box cover is first opened manually. Then, the fixed part of the aircraft actuator cylinder is installed on connecting block two, and the movable part of the aircraft actuator cylinder is installed on connecting block one. At this time, the movable part is in contact with semi-circular ring one. Then, semi-circular ring two is manually fastened onto semi-circular ring one, and semi-circular ring two is fixed onto semi-circular ring one with bolts. At this time, semi-circular ring one and semi-circular ring two form a complete circle and are located outside the movable part. The box cover is closed, and the hydraulic telescopic rod drives connecting block one to move left and right reciprocatingly. Connecting block one drives the movable part to move left and right reciprocatingly, thereby causing the aircraft actuator cylinder to continuously extend and retract. If the sealing performance of the aircraft actuator cylinder is low, the aircraft... Hydraulic oil inside the actuator cylinder leaks from the connection between the moving and fixed parts, dripping into the collection box. Simultaneously, some leaked hydraulic oil adheres to the surface of the moving part, dripping slowly or not at all. After the aircraft actuator cylinder reaches the target number of extensions and retractions, the hydraulic extension rod is closed, and the electric push rod is activated. The electric push rod drives semi-circular ring one to move to the right, which in turn drives semi-circular ring two to move to the right. This causes semi-circular rings one and two to slide to the right on the surface of the moving part, scraping away the hydraulic oil remaining on the surface. The scraped hydraulic oil collects on the right side of semi-circular rings one and two, forming droplets that fall into the collection box. After the first and second semicircular rings move to the right side of the movable part, they stop moving. At this point, a small amount of hydraulic oil will still remain on the right side of the outer ring surface of the movable part, the right side of the first semicircular ring, and the right side of the second semicircular ring. Then, the cover is opened manually using a lever, which then drives the slider to move in a circular motion. The slider drives the scraper to move in a circular motion, rotating 270 degrees, so that the slider and scraper move downwards. During this process, the scraper moves against the right side of the outer ring surface of the movable part, the right side of the first semicircular ring, and the right side of the second semicircular ring, scraping off the hydraulic oil remaining on these surfaces. The scraped hydraulic oil eventually collects on the slider, and then the manual... Use a dropper to remove the hydraulic oil. Then, manually pull the connecting block three forward. The connecting block three moves the box forward, thus removing the box. Then, measure the hydraulic oil content inside the box and calculate the total amount of hydraulic oil collected. This data reflects the sealing performance of the aircraft actuator, completing the sealing test. During use, the semi-circular ring one, semi-circular ring two, slider, and scraper work together to scrape off and collect the hydraulic oil remaining on the surface of the moving part. This ensures that the collected hydraulic oil content is as close as possible to the actual leakage amount, making the measured sealing performance more accurate and avoiding the problem of large test results due to hydraulic oil residue on the surface of the moving part.

[0009] As a further preferred embodiment, it also includes an interception component, which includes a semicircular ring three and a semicircular ring four; the semicircular ring three is fixedly connected to the housing; and the semicircular ring four is fixedly connected to the semicircular ring three.

[0010] Based on the above technical solution, when the hydraulic telescopic rod continuously extends and retracts, due to the relatively thin wall of the fixed part, some hydraulic oil will spread to the outer ring surface of the fixed part, thus affecting the test results. Therefore, an interception component is installed inside the housing. When installing the aircraft actuator, the right end of the fixed part is fixed to the connecting block two, and the left end of the fixed part is supported by the semi-circular ring three. Then, the semi-circular ring four is fastened to the semi-circular ring three, and the semi-circular ring three and the semi-circular ring four are fixed together with bolts, and the left side of the semi-circular ring three and the semi-circular ring four are flush with the left side of the fixed part. When the hydraulic telescopic rod continuously extends and retracts, the semi-circular ring three and the semi-circular ring four cooperate to intercept the hydraulic oil and prevent it from spreading to the outer ring surface of the fixed part. After the hydraulic telescopic rod stops extending and retracting, The electric push rod drives the first semicircular ring to the right, which in turn drives the second semicircular ring to the right. The second semicircular ring then drives the slider and scraper to the right, causing the scraper to contact the left side of the third semicircular ring, the left side of the fourth semicircular ring, and the left side of the fixed part. Subsequently, the scraper is manually rotated by the slider to remove the hydraulic oil remaining on the left side of the third semicircular ring, the fourth semicircular ring, and the left side of the fixed part, ensuring the accuracy of the test results. During use, the cooperation of the third and fourth semicircular rings prevents hydraulic oil from spreading to the outer ring surface of the fixed part, increasing the accuracy of the sealing performance test results. At the same time, the third and fourth semicircular rings are also used to fix the left end of the fixed part, which helps to improve the installation stability of the aircraft actuator and thus ensures that the test operation can be carried out stably.

[0011] As a further preferred option, the scraper is curved.

[0012] As a further preferred embodiment, it also includes a column; the column is plugged into the slider and fixedly connected to the scraper block.

[0013] As a further preferred option, a V-shaped groove is provided at both ends of the slider.

[0014] As a further preferred option, the slider is provided with several protrusions.

[0015] As a further preferred option, an alarm is installed on the control panel.

[0016] As a further preferred option, the column is provided with a flange.

[0017] Based on the above technical solution, when hydraulic oil flows downwards and drips along the sides of semicircular rings one, two, three, and four, a small amount of hydraulic oil will spread to the outer ring surfaces of semicircular rings one and three, thus interfering with the test. Therefore, a V-shaped groove is made on the slider. When the slider is pushed to move, the hydraulic oil remaining on the outer ring surfaces of semicircular rings one and three is scraped off through the V-shaped groove. The scraped hydraulic oil will collect in the center of the V-shaped groove and eventually drip into the box for collection. This makes the collected hydraulic oil closer to the actual leakage value, thereby increasing the accuracy of the test results. To ensure the accuracy of the results, during the process, the hydraulic oil at the V-groove can be intercepted by the protrusions, preventing the hydraulic oil from spreading to both sides of the slider. In use, by opening a V-groove on the slider, the hydraulic oil remaining on the outer ring surfaces of the first and third semicircular rings can be scraped off when the slider moves. The scraped hydraulic oil will gather in the middle of the V-groove and eventually drip into the box for collection, making the collected hydraulic oil closer to the actual leakage value, thereby increasing the accuracy of the test results. At the same time, the hydraulic oil at the V-groove can be intercepted by the protrusions, preventing the hydraulic oil from spreading to both sides of the slider.

[0018] The present invention has the following advantages: First, by using the cooperation of semi-circular ring one, semi-circular ring two, slider and scraper, the hydraulic oil remaining on the surface of the moving part is scraped off and collected, so that the collected hydraulic oil content is as close as possible to the actual leakage amount, thereby making the measured sealing performance more accurate and avoiding the problem of large error in test results caused by hydraulic oil remaining on the surface of the moving part. Second, by using the combination of semicircular ring three and semicircular ring four, hydraulic oil is prevented from spreading to the outer ring surface of the fixed part, which increases the accuracy of the sealing performance test results. At the same time, semicircular ring three and semicircular ring four are also used to fix the left end of the fixed part, which helps to improve the installation stability of the aircraft actuator, thereby ensuring that the test operation can be carried out stably. Third, viscous hydraulic oil is collected by a curved scraper, and then the scraper is pulled out through the column to remove the viscous hydraulic oil. After the scraper is pulled out, a hole is formed in the position of the slider corresponding to the column. The hydraulic oil collected on the slider flows into the box for collection through the hole. At this time, there is no need to use a dropper to suck up the hydraulic oil collected on the slider, which improves the convenience of manual operation. At the same time, the operator can push the slider to move through the column, which further improves the convenience of operation. Fourth, by creating a V-shaped groove on the slider, the hydraulic oil remaining on the outer ring surfaces of the first and third semicircular rings can be scraped off when the slider moves. The scraped hydraulic oil will gather in the middle of the V-shaped groove and eventually drip into the box for collection. This makes the collected hydraulic oil closer to the actual leakage value, thereby increasing the accuracy of the test results. At the same time, the protrusions can intercept the hydraulic oil at the V-shaped groove, preventing the hydraulic oil from spreading to both sides of the slider. Attached Figure Description

[0019] Figure 1 A schematic diagram of the hydraulic test bench of the present invention is shown; Figure 2 A schematic diagram of the internal structure of the housing of the present invention is shown; Figure 3 A schematic diagram of the structure of the semicircular ring three of the present invention is shown; Figure 4 A schematic diagram of the structure of the semicircular ring four of the present invention is shown; Figure 5 A schematic diagram of the structure of the semicircular ring II and the slider of the present invention is shown; Figure 6 A schematic diagram of the scraper block of the present invention is shown; Figure 7 This diagram shows the state of the first and second semicircular rings of the present invention after they have moved to the right. Figure 8 A schematic diagram of the structure of the column of the present invention is shown.

[0020] The labels in the diagram are as follows: 1-Chassis, 2-Box body, 3-Control panel, 4-Box cover, 5-Hydraulic telescopic rod, 6-Connecting block one, 7-Connecting block two, 8-Electric push rod, 9-Semi-circular ring one, 10-Semi-circular ring two, 11-Slider, 12-Scraper, 13-Aircraft actuator, 101-Box body, 102-Connecting block three, 201-Lever, 202-Semi-circular ring three, 203-Semi-circular ring four, 204-Column, 91-Moving part, 92-Fixed part, 93-V-groove, 94-Protrusion. Detailed Implementation

[0021] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0022] Example 1: A hydraulic testing bench, such as Figures 1-8As shown, the system includes a chassis 1, a housing 2, and a control panel 3; the housing 2 is bolted to the chassis 1; the control panel 3 is bolted to the housing 2; it also includes a cover 4, a hydraulic telescopic rod 5, a first connecting block 6, a second connecting block 7, an electric push rod 8, a first semicircular ring 9, a second semicircular ring 10, a slider 11, a scraper 12, and a collection assembly; the cover 4 is rotatably connected to the housing 2, covering the housing 2; the hydraulic telescopic rod 5 is bolted to the inside of the housing 2; the telescopic end of the hydraulic telescopic rod 5 is bolted... A connecting block 6 is bolted to the inside of the housing 2, and the connecting block 7 is also made of alloy material. An electric push rod 8 is bolted to the connecting block 6. A semi-circular ring 9 is fixed to the telescopic end of the electric push rod 8. A semi-circular ring 10 is bolted to the semi-circular ring 9. A slider 11 is damped and slidably connected to the semi-circular ring 10. A scraper 12 is connected to the slider 11 and contacts the semi-circular ring 10. A collection assembly is connected to the inside of the housing 2.

[0023] The collection component includes a box 101 and a connecting block 3 102; the box 101 is slidably connected to the box 2; the connecting block 3 102 is slidably connected to the box 2 and is welded to the box 101.

[0024] It also includes a lever 201; the lever 201 is welded on the box cover 4, and the box cover 4 can be moved manually by the lever 201, making it more convenient to apply force.

[0025] First, manually open the case cover 4. Then, install the fixed part 92 of the aircraft actuator cylinder 13 onto the connecting block 2 7, and install the movable part 91 of the aircraft actuator cylinder 13 onto the connecting block 1 6. At this time, the movable part 91 is in contact with the semi-circular ring 1 9. Then, manually fasten the semi-circular ring 2 10 onto the semi-circular ring 1 9, and fix the semi-circular ring 2 10 onto the semi-circular ring 1 9 with bolts. At this time, the semi-circular ring 1 9 and the semi-circular ring 2 10 form a complete circle and are located outside the movable part 91. Close the case cover 4. The hydraulic telescopic rod 5 drives the connecting block 1 6 to move left and right reciprocatingly. The connecting block 1 6 drives the movable part 91 to move left and right reciprocatingly, thereby causing the aircraft actuator cylinder 13 to continuously extend and retract. If the sealing performance of the aircraft actuator cylinder 13 is low, the aircraft actuator cylinder 1... Hydraulic oil inside part 3 leaks from the connection between the movable part 91 and the fixed part 92, then drips into the box 101 for collection. Simultaneously, some of the leaked hydraulic oil adheres to the surface of the movable part 91, dripping slowly or not at all. After the aircraft actuator 13 reaches the target number of extensions and retractions, the hydraulic telescopic rod 5 is closed, and the electric push rod 8 is activated. The electric push rod 8 drives the first semicircular ring 9 to move to the right, and the first semicircular ring 9 drives the second semicircular ring 10 to move to the right, causing the first and second semicircular rings 9 and 10 to slide to the right on the surface of the movable part 91, thereby scraping off the hydraulic oil remaining on the surface of the movable part 91. The scraped hydraulic oil gathers on the right side of the first and second semicircular rings 9 and forms droplets that fall into the box 101 for collection. After the second semicircular ring 10 moves to the right side of the movable part 91, it stops moving. At this time, a small amount of hydraulic oil will still remain on the right side of the outer ring surface of the movable part 91, the right side of the first semicircular ring 9, and the right side of the second semicircular ring 10. Then, the cover 4 is opened manually using the lever 201, which drives the slider 11 to move in a circular motion. The slider 11 drives the scraper 12 to move in a circular motion, and it moves 270 degrees, so that the slider 11 and the scraper 12 move downwards. During this process, the scraper 12 moves against the right side of the outer ring surface of the movable part 91, the right side of the first semicircular ring 9, and the right side of the second semicircular ring 10, scraping off the hydraulic oil remaining on the right side of the outer ring surface of the movable part 91, the right side of the first semicircular ring 9, and the right side of the second semicircular ring 10. The scraped hydraulic oil eventually collects on the slider 11. Then, the liquid is manually removed using a dropper. Next, the connecting block 3 102 is manually pulled forward, which in turn moves the box 101 forward, thus removing the box 101. The hydraulic oil content inside the box 101 is then measured, and the total amount of hydraulic oil collected is calculated. This data reflects the sealing performance of the aircraft actuator cylinder 13, completing the sealing test operation. During use, the hydraulic oil remaining on the surface of the moving part 91 is scraped off and collected by the cooperation of semi-circular ring 1 9, semi-circular ring 2 10, slider 11, and scraper 12. This ensures that the collected hydraulic oil content is as close as possible to the actual leakage amount, making the measured sealing performance more accurate and avoiding the problem of large test results due to hydraulic oil residue on the surface of the moving part 91.

[0026] It also includes an interception component, which includes a semi-circular ring 3 202 and a semi-circular ring 4 203; the semi-circular ring 3 202 is bolted to the inside of the housing 2; the semi-circular ring 3 202 is bolted to the semi-circular ring 4 203, and the hydraulic oil is intercepted by the semi-circular ring 3 202 and the semi-circular ring 4 203 to prevent it from spreading to the moving part 91.

[0027] When the hydraulic telescopic rod 5 continues to extend and retract, due to the relatively thin wall of the fixed part 92, some hydraulic oil will spread to the outer ring surface of the fixed part 92, thus affecting the test results. Therefore, an interception component is installed inside the housing 2. When installing the aircraft actuator cylinder 13, the right end of the fixed part 92 is fixed to the connecting block 2 7, and the left end of the fixed part 92 is supported by the semi-circular ring 3 202. Then, the semi-circular ring 4 203 is fastened to the semi-circular ring 3 202, and the semi-circular ring 3 202 and the semi-circular ring 4 203 are fixed together with bolts, and the left side of the semi-circular ring 3 202 and the semi-circular ring 4 203 are flush with the left side of the fixed part 92. When the hydraulic telescopic rod 5 continues to extend and retract, the semi-circular ring 3 202 and the semi-circular ring 4 203 cooperate to intercept the hydraulic oil and prevent it from spreading to the outer ring surface of the fixed part 92. After the hydraulic telescopic rod 5 stops extending and retracting, the electric push rod 8 drives... The first semicircular ring 9 moves to the right, which in turn drives the second semicircular ring 10 to move to the right. The second semicircular ring 10 then drives the slider 11 and the scraper 12 to move to the right, causing the scraper 12 to contact the left side of the third semicircular ring 202, the left side of the fourth semicircular ring 203, and the left side of the fixed part 92. Subsequently, the scraper 12 is rotated manually by the slider 11, causing the scraper 12 to scrape away the hydraulic oil remaining on the left side of the third semicircular ring 202, the fourth semicircular ring 203, and the left side of the fixed part 92, to ensure the accuracy of the test results. During use, the cooperation of the third semicircular ring 202 and the fourth semicircular ring 203 prevents hydraulic oil from spreading to the outer ring surface of the fixed part 92, increasing the accuracy of the sealing performance test results. At the same time, the third semicircular ring 202 and the fourth semicircular ring 203 are also used to fix the left end of the fixed part 92, which helps to improve the installation stability of the aircraft actuator cylinder 13, thereby ensuring that the test operation can be carried out stably.

[0028] The scraper 12 is curved and is used to collect viscous hydraulic oil.

[0029] It also includes a column 204; the column 204 is plugged into and connected to the slider 11, and the column 204 is fixed to the scraper block 12. The slider 11 can be moved manually through the column 204, making it more convenient to apply force.

[0030] During the hydraulic oil scraping process, the viscous hydraulic oil adheres to the scraper block 12 and cannot drip into the housing 101 or collect on the slider 11. Therefore, the scraper block 12 is designed as a curved shape. During the scraping process, the viscous hydraulic oil accumulates at the curved part of the scraper block 12. After scraping, the scraper block 12 is manually pulled out through the column 204, and then the viscous hydraulic oil accumulated at the curved part of the scraper block 12 is removed. This makes the collected hydraulic oil closer to the actual leakage value, thereby increasing the accuracy of the test results. At the same time, after the column 204 and the scraper block 12 are pulled out, a hole is formed in the middle of the slider 11 corresponding to the position of the column 204. Since the slider 11 itself is curved, the oil collected on the slider 11... The hydraulic oil on the slider 11 flows into the box 101 through the hole for collection. At this time, there is no need to use a dropper to collect the hydraulic oil collected on the slider 11. In use, the viscous hydraulic oil is collected by the curved scraper 12. Then, the scraper 12 is pulled out through the column 204 to remove the viscous hydraulic oil. After the scraper 12 is pulled out, a hole is formed in the slider 11 corresponding to the position of the column 204. The hydraulic oil collected on the slider 11 flows into the box 101 through the hole for collection. At this time, there is no need to use a dropper to collect the hydraulic oil collected on the slider 11, which improves the convenience of manual operation. At the same time, the operator can push the slider 11 to move through the column 204, which further improves the convenience of operation.

[0031] The working principle of the above embodiments is as follows: First, manually open the case cover 4. Then, install the fixed part 92 of the aircraft actuator cylinder 13 onto the connecting block 2 7, and install the movable part 91 of the aircraft actuator cylinder 13 onto the connecting block 1 6. At this time, the movable part 91 is in contact with the semi-circular ring 1 9. Then, manually fasten the semi-circular ring 2 10 onto the semi-circular ring 1 9, and fix the semi-circular ring 2 10 onto the semi-circular ring 1 9 with bolts. At this time, the semi-circular ring 1 9 and the semi-circular ring 2 10 form a complete circle and are located outside the movable part 91. Close the case cover 4. The hydraulic telescopic rod 5 drives the connecting block 1 6 to move left and right reciprocatingly. The connecting block 1 6 drives the movable part 91 to move left and right reciprocatingly, thereby causing the aircraft actuator cylinder 13 to continuously extend and retract. If the sealing performance of the aircraft actuator cylinder 13 is low, the aircraft actuator cylinder 1... Hydraulic oil inside part 3 leaks from the connection between the movable part 91 and the fixed part 92, then drips into the box 101 for collection. Simultaneously, some of the leaked hydraulic oil adheres to the surface of the movable part 91, dripping slowly or not at all. After the aircraft actuator 13 reaches the target number of extensions and retractions, the hydraulic telescopic rod 5 is closed, and the electric push rod 8 is activated. The electric push rod 8 drives the first semicircular ring 9 to move to the right, and the first semicircular ring 9 drives the second semicircular ring 10 to move to the right, causing the first and second semicircular rings 9 and 10 to slide to the right on the surface of the movable part 91, thereby scraping off the hydraulic oil remaining on the surface of the movable part 91. The scraped hydraulic oil gathers on the right side of the first and second semicircular rings 9 and forms droplets that fall into the box 101 for collection. After the second semicircular ring 10 moves to the right side of the movable part 91, it stops moving. At this time, a small amount of hydraulic oil will still remain on the right side of the outer ring surface of the movable part 91, the right side of the first semicircular ring 9, and the right side of the second semicircular ring 10. Then, the cover 4 is opened manually using the lever 201, which drives the slider 11 to move in a circular motion. The slider 11 drives the scraper 12 to move in a circular motion, and it moves 270 degrees, so that the slider 11 and the scraper 12 move downwards. During this process, the scraper 12 moves against the right side of the outer ring surface of the movable part 91, the right side of the first semicircular ring 9, and the right side of the second semicircular ring 10, scraping off the hydraulic oil remaining on the right side of the outer ring surface of the movable part 91, the right side of the first semicircular ring 9, and the right side of the second semicircular ring 10. The scraped hydraulic oil eventually collects on the slider 11. Then, the liquid is manually removed using a dropper. Next, the connecting block 3 102 is manually pulled forward, which in turn moves the box 101 forward, thus removing the box 101. The hydraulic oil content inside the box 101 is then measured, and the total amount of hydraulic oil collected is calculated. This data reflects the sealing performance of the aircraft actuator cylinder 13, completing the sealing test operation. During use, the hydraulic oil remaining on the surface of the moving part 91 is scraped off and collected by the cooperation of semi-circular ring 1 9, semi-circular ring 2 10, slider 11, and scraper 12. This ensures that the collected hydraulic oil content is as close as possible to the actual leakage amount, making the measured sealing performance more accurate and avoiding the problem of large test results due to hydraulic oil residue on the surface of the moving part 91.

[0032] When the hydraulic telescopic rod 5 continues to extend and retract, due to the relatively thin wall of the fixed part 92, some hydraulic oil will spread to the outer ring surface of the fixed part 92, thus affecting the test results. Therefore, an interception component is installed inside the housing 2. When installing the aircraft actuator cylinder 13, the right end of the fixed part 92 is fixed to the connecting block 2 7, and the left end of the fixed part 92 is supported by the semi-circular ring 3 202. Then, the semi-circular ring 4 203 is fastened to the semi-circular ring 3 202, and the semi-circular ring 3 202 and the semi-circular ring 4 203 are fixed together with bolts, and the left side of the semi-circular ring 3 202 and the semi-circular ring 4 203 are flush with the left side of the fixed part 92. When the hydraulic telescopic rod 5 continues to extend and retract, the semi-circular ring 3 202 and the semi-circular ring 4 203 cooperate to intercept the hydraulic oil and prevent it from spreading to the outer ring surface of the fixed part 92. After the hydraulic telescopic rod 5 stops extending and retracting, the electric push rod 8 drives... The first semicircular ring 9 moves to the right, which in turn drives the second semicircular ring 10 to move to the right. The second semicircular ring 10 then drives the slider 11 and the scraper 12 to move to the right, causing the scraper 12 to contact the left side of the third semicircular ring 202, the left side of the fourth semicircular ring 203, and the left side of the fixed part 92. Subsequently, the scraper 12 is rotated manually by the slider 11, causing the scraper 12 to scrape away the hydraulic oil remaining on the left side of the third semicircular ring 202, the fourth semicircular ring 203, and the left side of the fixed part 92, to ensure the accuracy of the test results. During use, the cooperation of the third semicircular ring 202 and the fourth semicircular ring 203 prevents hydraulic oil from spreading to the outer ring surface of the fixed part 92, increasing the accuracy of the sealing performance test results. At the same time, the third semicircular ring 202 and the fourth semicircular ring 203 are also used to fix the left end of the fixed part 92, which helps to improve the installation stability of the aircraft actuator cylinder 13, thereby ensuring that the test operation can be carried out stably.

[0033] During the hydraulic oil scraping process, the viscous hydraulic oil adheres to the scraper block 12 and cannot drip into the housing 101 or collect on the slider 11. Therefore, the scraper block 12 is designed as a curved shape. During the scraping process, the viscous hydraulic oil accumulates at the curved part of the scraper block 12. After scraping, the scraper block 12 is manually pulled out through the column 204, and then the viscous hydraulic oil accumulated at the curved part of the scraper block 12 is removed. This makes the collected hydraulic oil closer to the actual leakage value, thereby increasing the accuracy of the test results. At the same time, after the column 204 and the scraper block 12 are pulled out, a hole is formed in the middle of the slider 11 corresponding to the position of the column 204. Since the slider 11 itself is curved, the oil collected on the slider 11... The hydraulic oil on the slider 11 flows into the box 101 through the hole for collection. At this time, there is no need to use a dropper to collect the hydraulic oil collected on the slider 11. In use, the viscous hydraulic oil is collected by the curved scraper 12. Then, the scraper 12 is pulled out through the column 204 to remove the viscous hydraulic oil. After the scraper 12 is pulled out, a hole is formed in the slider 11 corresponding to the position of the column 204. The hydraulic oil collected on the slider 11 flows into the box 101 through the hole for collection. At this time, there is no need to use a dropper to collect the hydraulic oil collected on the slider 11, which improves the convenience of manual operation. At the same time, the operator can push the slider 11 to move through the column 204, which further improves the convenience of operation.

[0034] Example 2, based on Example 1, such as Figure 7 As shown, a V-shaped groove 93 is provided at both ends of the slider 11.

[0035] The slider 11 has four protrusions 94.

[0036] An alarm is installed on control panel 3. When a malfunction occurs, the alarm will sound to remind staff to go for maintenance.

[0037] The column 204 is provided with a flange for anti-slip purposes.

[0038] When hydraulic oil flows downwards and drips along the sides of semicircular rings 9, 10, 202, and 203, a small amount of hydraulic oil spreads to the outer surfaces of semicircular rings 9 and 202, interfering with the test. Therefore, a V-groove 93 is made on the slider 11. When the slider 11 is pushed to move, the hydraulic oil remaining on the outer surfaces of semicircular rings 9 and 202 is scraped off through the V-groove 93. The scraped hydraulic oil collects in the center of the V-groove 93 and eventually drips into the box 101 for collection. This makes the collected hydraulic oil closer to the actual leakage value, thereby improving the test results. To improve accuracy, during this process, the hydraulic oil at the V-groove 93 can be intercepted by the protrusion 94, preventing the hydraulic oil from spreading to both sides of the slider 11. In use, by opening the V-groove 93 on the slider 11, the hydraulic oil remaining on the outer ring surface of the semi-circular ring 9 and the semi-circular ring 202 can be scraped off when the slider 11 moves. The scraped hydraulic oil will gather in the middle of the V-groove 93 and eventually drip into the box 101 for collection, making the collected hydraulic oil closer to the actual leakage value, thereby increasing the accuracy of the test results. At the same time, the hydraulic oil at the V-groove 93 can be intercepted by the protrusion 94, preventing the hydraulic oil from spreading to both sides of the slider 11.

[0039] In summary, the present invention has the following advantages: First, by cooperating with the semi-circular ring 9, the semi-circular ring 10, the slider 11 and the scraper 12, the hydraulic oil remaining on the surface of the moving part 91 is scraped off and collected, so that the collected hydraulic oil content is as close as possible to the actual leakage amount, thereby making the measured sealing performance more accurate and avoiding the problem of large error in test results caused by hydraulic oil remaining on the surface of the moving part 91. Second, by using semicircular ring 3 202 and semicircular ring 4 203 together, hydraulic oil is prevented from spreading to the outer ring surface of the fixed part 92, which increases the accuracy of the sealing performance test results. At the same time, semicircular ring 3 202 and semicircular ring 4 203 are also used to fix the left end of the fixed part 92, which helps to improve the installation stability of the aircraft actuator cylinder 13, thereby ensuring that the test operation can be carried out stably. Third, the viscous hydraulic oil is collected by the curved scraper 12, and then the scraper 12 is pulled out by the column 204 to remove the viscous hydraulic oil. After the scraper 12 is pulled out, a hole is formed in the slider 11 corresponding to the position of the column 204. The hydraulic oil collected on the slider 11 flows into the box 101 from the hole for collection. At this time, there is no need to use a dropper to absorb the hydraulic oil collected on the slider 11, which improves the convenience of manual operation. At the same time, the operator can push the slider 11 to move through the column 204, which further improves the convenience of operation. Fourth, by opening a V-shaped groove 93 on the slider 11, the hydraulic oil remaining on the outer ring surface of the semi-circular ring 9 and the semi-circular ring 102 can be scraped off when the slider 11 moves. The scraped hydraulic oil will gather in the middle of the V-shaped groove 93 and eventually drip into the box 101 for collection. This makes the collected hydraulic oil closer to the actual leakage value, thereby increasing the accuracy of the test results. At the same time, the hydraulic oil at the V-shaped groove 93 can be intercepted by the protrusion 94 to prevent the hydraulic oil from spreading to both sides of the slider 11.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic test bench, comprising a chassis (1), a housing (2), and a control panel (3) fixedly attached to the housing (2); the housing (2) is fixedly attached to the chassis (1); characterized in that: It also includes a box cover (4); the box cover (4) is rotatably connected to the box body (2); a hydraulic telescopic rod (5) is fixed to the box body (2); a connecting block one (6) is fixed to the telescopic end of the hydraulic telescopic rod (5); a connecting block two (7) is fixed to the box body (2); an electric push rod (8) is fixed to the connecting block one (6); a semi-circular ring one (9) is fixed to the telescopic end of the electric push rod (8); a semi-circular ring two (10) is fixed to the semi-circular ring one (9); a slider (11) is damped and slidably connected to the semi-circular ring two (10); a scraper (12) is connected to the slider (11), and the scraper (12) contacts the semi-circular ring two (10); a collection assembly is connected to the box body (2), and the collection assembly is used to collect hydraulic oil.

2. A hydraulic testing bench according to claim 1, characterized in that: The collection component includes a box (101) and a connecting block three (102); the box (101) is slidably connected to the box (2); the connecting block three (102) is fixedly connected to the box (101), and the connecting block three (102) is slidably connected to the box (2).

3. A hydraulic testing bench according to claim 2, characterized in that: It also includes a lever (201); the lever (201) is fixedly attached to the cover (4).

4. A hydraulic testing bench according to claim 2, characterized in that: It also includes an interception component, which includes a semi-circular ring three (202) and a semi-circular ring four (203); a semi-circular ring three (202) is fixedly connected to the housing (2); a semi-circular ring four (203) is fixedly connected to the semi-circular ring three (202).

5. A hydraulic testing bench according to claim 4, characterized in that: The scraper (12) is curved.

6. A hydraulic testing bench according to claim 5, characterized in that: It also includes a column (204); the column (204) is plugged into the slider (11), and the column (204) is fixedly connected to the scraper (12).

7. A hydraulic testing bench according to claim 6, characterized in that: A V-shaped groove (93) is provided at both ends of the slider (11).

8. A hydraulic testing bench according to claim 7, characterized in that: The slider (11) has several protrusions (94).

9. A hydraulic testing bench according to claim 8, characterized in that: An alarm is installed on the control panel (3).

10. A hydraulic testing bench according to any one of claims 6-9, characterized in that: A flange is provided on the column (204).

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