Hydraulic cylinder performance testing device

Abstract

The invention discloses a hydraulic cylinder performance testing device, which comprises a testing box, a baffle plate, a locking device, an oil supply device, a salt mist spraying device, a stroke testing device and a controller, and is characterized in that the top of the testing box is provided with a box cover; the baffle plate is detachably arranged in the test box so as to divide the test box into a first test area and a second test area; the locking device is arranged in the second area; the oil supply device is connected with the hydraulic cylinder; the spraying end of the salt mist spraying device is arranged in the second area so as to spray the hydraulic cylinder; the stroke testing device is arranged in the first area, and when a piston rod of the hydraulic cylinder extends, the piston rod penetrates through the baffle and abuts against the stroke testing device; and the controller is arranged on the test box and is respectively connected with the stroke test device and the oil supply device. The device can simulate the marine environment to test the performance of the cycle life of the hydraulic cylinder, guarantees the precision of test data, and provides feasibility verification for the use of the hydraulic cylinder in marine engineering.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic cylinder performance testing, and in particular to a hydraulic cylinder performance testing device. Background Art

[0002] A hydraulic cylinder is a device that converts liquid pressure into mechanical motion and is commonly used in industrial and mechanical systems.

[0003] In the related art, when testing the cycle life of a hydraulic cylinder, the service life and durability of the hydraulic cylinder are usually evaluated by extending and contracting the hydraulic cylinder multiple times over a long period of time.

[0004] However, in special environments (such as humid and salty marine environments), due to the impact of special environments on hydraulic cylinders, the above-mentioned cycle life performance test is not accurate enough and cannot accurately provide data support for the reliability, durability and safety of hydraulic cylinders used in marine environments. Summary of the Invention

[0005] The present application aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0006] To this end, one purpose of this application is to propose a hydraulic cylinder performance testing device that can simulate the marine environment to perform performance testing on the cycle life of the hydraulic cylinder, ensure the accuracy of the test data, and provide feasibility verification for the use of hydraulic cylinders in marine engineering.

[0007] To achieve the above-mentioned objectives, the first embodiment of the present application proposes a hydraulic cylinder performance testing device, comprising: a test box, a baffle, a locking device, an oil supply device, a salt mist spray device, a stroke testing device and a controller, wherein an openable and closable box cover is provided on the top of the test box; the baffle is detachably arranged in the test box, and when the box cover is closed on the test box, the test box is divided into a first test area and a second test area; the locking device is arranged in the second test area to limit the hydraulic cylinder; the oil supply device is connected to the hydraulic cylinder; the spray end of the salt mist spray device is arranged in the second test area to spray the hydraulic cylinder; the stroke testing device is arranged in the first test area, wherein when the piston rod of the hydraulic cylinder is extended to the maximum stroke, the piston rod passes through the baffle and abuts against the stroke testing device; the controller is arranged on the test box and is respectively connected to the stroke testing device and the oil supply device.

[0008] A hydraulic cylinder performance testing device in an embodiment of the present application can simulate the marine environment to perform performance testing on the cycle life of the hydraulic cylinder, ensure the accuracy of the test data, and provide feasibility verification for the use of hydraulic cylinders in marine engineering.

[0009] In addition, the hydraulic cylinder performance testing device proposed in the above embodiment of the present application may also have the following additional technical features:

[0010] In one embodiment of the present application, a through hole is formed on the baffle, and the piston rod passes through the through hole and abuts against the stroke testing device.

[0011] In one embodiment of the present application, mounting grooves are respectively provided on the inner walls of the test box and the box cover, and sealing gaskets are respectively provided on both sides of the mounting grooves, and the baffle is inserted between the two sealing gaskets.

[0012] In one embodiment of the present application, the locking device includes a connecting plate and a locking plate, wherein the connecting plate is arranged in the second test area, and the two sides of the connecting plate are respectively connected to the opposite sides of the test box; the opposite sides of the connecting plate and the locking plate are provided with limiting parts, and the hydraulic cylinder is arranged between the two limiting parts, and the connecting plate and the locking plate are locked by bolts.

[0013] In one embodiment of the present application, the oil supply device includes an oil supply control box, an oil inlet pipeline and an oil outlet pipeline, wherein the oil supply control box is arranged outside the test box; the oil inlet pipeline and the oil outlet pipeline are respectively connected to the oil supply control box, and respectively extend inward through the second test area and are connected to the oil inlet and oil outlet of the hydraulic cylinder.

[0014] In one embodiment of the present application, the oil supply control box includes an oil supply tank and an oil supply pump, wherein the oil supply tank is connected to the oil supply pump, and the oil inlet pipeline and the oil outlet pipeline are respectively connected to the oil supply pump.

[0015] In one embodiment of the present application, the salt mist spray device includes a salt mist generator, a water outlet pipe, a spray pipe, and a water inlet pipe, wherein the salt mist generator is arranged outside the test box; one end of the water outlet pipe is connected to the salt mist generator, and the other end extends into the second test area; the spray pipe is arranged in the second test area, the spray pipe is an arc-shaped pipe, and surrounds the hydraulic cylinder, and the spray pipe is connected to the water outlet pipe; one end of the water inlet pipe is connected to the bottom of the second test area, and the other end is connected to the salt mist generator.

[0016] In one embodiment of the present application, the spray pipe is provided with a plurality of spray heads at different angles.

[0017] In one embodiment of the present application, the stroke testing device includes a cross bar, a mounting plate, a pressure sensor, an annular plate and a spring, wherein the cross bar is arranged in the first test area; the mounting plate is slidably arranged on the cross bar; the pressure sensor is arranged on the side of the mounting plate close to the baffle, and the pressure sensor is arranged on the central axis of the piston rod; the annular plate is sleeved on the cross bar and locked by a locking bolt; the spring is sleeved on the cross bar, and the two ends of the spring are respectively connected to the mounting plate and the annular plate.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 1 is a schematic structural diagram of a hydraulic cylinder performance testing device according to one embodiment of the present application;

[0021] Figure 2 This is a side structural diagram of a hydraulic cylinder performance testing device according to one embodiment of the present application;

[0022] Figure 3 is a structural schematic diagram of a baffle according to an embodiment of the present application;

[0023] Figure 4 is a structural schematic diagram of a locking device according to an embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the connection structure between the oil supply device and the hydraulic cylinder according to one embodiment of the present application;

[0025] Figure 6 is a structural schematic diagram of a salt mist spray device according to an embodiment of the present application;

[0026] Figure 7 is a structural schematic diagram of a stroke testing device according to an embodiment of the present application;

[0027] As shown in the figure:

[0028] 100. Test box; 110. Box cover; 101. First test area; 102. Second test area; 200. Baffle; 201. Through hole; 202. Mounting slot; 300. Locking device; 310. Connecting plate; 320. Locking plate; 400. Oil supply device; 410. Oil supply control box; 420. Oil inlet pipeline; 430. Oil outlet pipeline; 500. Salt spray spray device; 510. Salt spray generator; 520. Water outlet pipe; 530. Spray pipe; 540. Water inlet pipe; 600. Stroke test device; 610. Cross bar; 620. Mounting plate; 630. Pressure sensor; 640. Ring plate; 650. Spring; 700. Controller; 800. Hydraulic cylinder; 801. Piston rod. DETAILED DESCRIPTION

[0029] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0030] A hydraulic cylinder performance testing device according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0031] like Figure 1 and Figure 2 As shown, a hydraulic cylinder performance testing device according to an embodiment of the present application may include a test box 100 , a baffle 200 , a locking device 300 , an oil supply device 400 , a salt spray device 500 , a stroke testing device 600 and a controller 700 .

[0032] The top of the test box 100 is provided with an openable and closable box cover 110 .

[0033] It should be noted that the box cover 110 is pivotally connected to the opening at the top of the test box 100 , and an observation port is provided on the box cover 110 for convenient observation by relevant staff, and a transparent acrylic plate is embedded in the observation port.

[0034] The baffle 200 is detachably disposed in the test box 100 , and when the box cover 110 is closed on the test box 100 , the baffle 200 is used to separate the test box 100 into a first test area 101 and a second test area 102 .

[0035] In one embodiment of the present application, Figure 3 As shown, a through hole 201 is opened on the baffle 200, and mounting grooves 202 are respectively provided on the inner walls of the test box 100 and the box cover 110, and sealing gaskets are respectively provided on both sides of the mounting grooves 202, and the baffle 200 is inserted between the two sealing gaskets.

[0036] It should be noted that when the box cover 110 is closed on the test box 100 , the top of the baffle 200 is in contact with the inner wall of the box cover 110 .

[0037] The locking device 300 is disposed in the second test area 102 to limit the hydraulic cylinder 800 .

[0038] In one embodiment of the present application, Figure 4 As shown, the locking device 300 includes a connecting plate 310 and a locking plate 320 .

[0039] Among them, the connecting plate 310 is arranged in the second test area 102, and the two sides of the connecting plate 310 are respectively connected to the opposite sides of the test box 100, and the opposite sides of the connecting plate 310 and the locking plate 320 are both provided with limiting parts. The hydraulic cylinder 800 is arranged between the two limiting parts and locks the connecting plate 310 and the locking plate 320 by bolts.

[0040] It should be noted that two locking devices 300 may be provided, and they respectively lock both sides of the cylinder body of the hydraulic cylinder 800 to further improve the stability of the hydraulic cylinder 800 when it is placed.

[0041] The oil supply device 400 is connected to the hydraulic cylinder 800 .

[0042] In one embodiment of the present application, Figure 5 As shown, the oil supply device 400 includes an oil supply control box 410 , an oil inlet pipeline 420 and an oil outlet pipeline 430 .

[0043] Among them, the oil supply control box 410 is arranged outside the test box 100, and the oil inlet pipeline 420 and the oil outlet pipeline 430 are respectively connected to the oil supply control box 410, and respectively extend inward through the second test area 102 and are connected to the oil inlet and oil outlet of the hydraulic cylinder 800.

[0044] It should be noted that when only the cylinder body of the hydraulic cylinder 800 is subjected to a performance test, an anti-corrosion layer (such as a rubber layer) is provided on the outer walls of the oil inlet pipeline 420 and the oil outlet pipeline 430 .

[0045] To clearly illustrate the previous embodiment, in one embodiment of the present application, the oil supply control box 410 includes an oil supply tank and an oil supply pump, wherein the oil supply tank is connected to the oil supply pump, and the oil inlet pipeline 420 and the oil outlet pipeline 430 are respectively connected to the oil supply pump.

[0046] The spray end of the salt spray device 500 is disposed in the second test area 102 to spray the hydraulic cylinder 800 .

[0047] In one embodiment of the present application, Figure 6As shown, the salt mist spraying device 500 includes a salt mist generator 510 , a water outlet pipe 520 , a spray pipe 530 and a water inlet pipe 540 .

[0048] The salt mist generator 510 is located outside the test chamber 100. One end of the water outlet pipe 520 is connected to the salt mist generator 510, and the other end extends into the second test area 102. A spray pipe 530 is located within the second test area 102. The spray pipe 530 is an arc-shaped pipe that surrounds the hydraulic cylinder 800 and is connected to the water outlet pipe 520. One end of the water inlet pipe 540 is connected to the bottom of the second test area 102 and the other end is connected to the salt mist generator 510.

[0049] It should be noted that the salt spray generator 510 includes a brine storage tank, a heating system, and a temperature control system. The brine storage tank is filled with brine to generate salt spray. The salt content of the brine can be adjusted in advance by relevant staff to simulate different corrosion environments; the heating system is used to control the temperature of the test environment, and the temperature control can simulate the climatic conditions of different seasons and regions.

[0050] To clearly illustrate the above embodiment, in one embodiment of the present application, the spray pipe 530 is provided with a plurality of spray heads at different angles.

[0051] It should be noted that the arc-shaped spray pipe 530 is arranged around the hydraulic cylinder 800, and the notch on the top facilitates the placement of the hydraulic cylinder 800. By setting multiple spray heads at different angles, different positions of the cylinder body of the hydraulic cylinder 800 can be sprayed and atomized, so that the salt mist applied to the cylinder body of the hydraulic cylinder 800 is more uniform.

[0052] The stroke testing device 600 is disposed in the first testing area 101 , wherein when the piston rod 801 of the hydraulic cylinder 800 is extended to the maximum stroke, the piston rod 801 passes through the baffle 200 and abuts against the stroke testing device 600 .

[0053] It should be noted that the piston rod 801 passes through the through hole 201 and abuts against the stroke testing device 600 .

[0054] In one embodiment of the present application, Figure 7 As shown, the stroke test device 600 includes a crossbar 610 , a mounting plate 620 , a pressure sensor 630 , an annular plate 640 , and a spring 650 .

[0055] Among them, the cross bar 610 is set in the first test area 101, the mounting plate 620 is slidably set on the cross bar 610, the pressure sensor 630 is set on the side of the mounting plate 620 close to the baffle 200, and the pressure sensor 630 is set on the central axis of the piston rod 801, the annular plate 640 is sleeved on the cross bar 610 and locked by a locking bolt, the spring 650 is sleeved on the cross bar 610, and the two ends of the spring 650 are respectively connected to the mounting plate 620 and the annular plate 640.

[0056] It should be noted that when testing the piston rod 801 with different strokes, the relevant staff can push the annular plate 640, the spring 650 and the mounting plate 620 to reach a new position, and re-enter the locking annular plate 640 to achieve a new limit.

[0057] It is understandable that the setting of the spring is to prevent the piston rod from excessively squeezing the pressure sensor and causing damage to the pressure sensor. Therefore, a pressure sensor with a smaller pressure test range can be selected to meet the test requirements.

[0058] The controller 700 is disposed on the test box 100 and is connected to the stroke test device 600 and the oil supply device 400 , respectively. Specifically, the controller 700 is connected to the pressure sensor 630 in the stroke test device 600 and the oil supply control box 410 in the oil supply device 400 , respectively.

[0059] Specifically, when the relevant staff tests the hydraulic cylinder 800 , the relevant staff first places the hydraulic cylinder 800 on the locking device 300 for locking.

[0060] Then, the oil inlet pipeline 420 and the oil outlet pipeline 430 are connected to the oil inlet and oil outlet of the hydraulic cylinder 800 respectively, and the hydraulic cylinder 800 is driven for the first time so that the piston rod 801 passes through the through hole 201 and reaches the maximum stroke.

[0061] Then, the relevant staff adjusts the position of the stroke testing device 600 so that the piston rod 801 just abuts against the pressure sensor 630 and locks the annular plate 640 on the cross bar 610.

[0062] Then start the controller 700, the oil supply control box 410 and the salt spray generator 510. The oil supply control box 410 causes the piston rod 801 to continuously extend or shorten by repeatedly supplying and discharging oil. When the piston rod is extended to its maximum stroke, the piston rod squeezes the pressure sensor, generating a pressure signal that is transmitted to the controller. Each time the oil supply control box supplies oil, an oil supply signal is generated and transmitted to the controller.

[0063] At the same time, the salt mist generator 510 transmits the salt mist to the water outlet pipe 520 and then sprays it out through the spray pipe 530 so that it is evenly sprayed on the cylinder body of the hydraulic cylinder 800.

[0064] As the hydraulic cylinder 800 body is corroded and its seals (such as sealing rings) age, oil leakage occurs in the cylinder body, shortening the maximum stroke of the piston rod 801. At this time, when the piston rod 801 is extended to the maximum stroke again, it cannot abut against the pressure sensor 630. After the controller 700 receives the oil supply signal, it does not receive the pressure signal. It can be determined that the hydraulic cylinder 800 is leaking oil, damaged, or other conditions that affect its service life, and the conditions are recorded.

[0065] Relevant staff can determine relevant data such as the number of oil supply times and duration of the hydraulic cylinder 800 by retrieving the records of the controller 700, thereby providing data support for subsequent improvements of the hydraulic cylinder 800.

[0066] In summary, a hydraulic cylinder performance testing device according to an embodiment of the present application can simulate the marine environment to perform performance testing on the cycle life of the hydraulic cylinder, ensure the accuracy of the test data, and provide feasibility verification for the use of hydraulic cylinders in marine engineering.

[0067] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0068] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0069] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0070] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0072] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A hydraulic cylinder performance testing device, characterized in that: include: A test box (100), a baffle (200), a locking device (300), an oil supply device (400), a salt spray device (500), a stroke test device (600) and a controller (700), wherein: The top of the test box (100) is provided with an openable and closable box cover (110); The baffle (200) is detachably arranged in the test box (100), and when the box cover (110) is closed on the test box (100), the test box (100) is separated into a first test area (101) and a second test area (102); The locking device (300) is arranged in the second test area (102) to limit the position of the hydraulic cylinder (800); The oil supply device (400) is connected to the hydraulic cylinder (800); The spray end of the salt spray device (500) is arranged in the second test area (102) to spray the hydraulic cylinder (800); The stroke test device (600) is arranged in the first test area (101), wherein when the piston rod (801) of the hydraulic cylinder (800) is extended to a maximum stroke, the piston rod (801) passes through the baffle (200) and abuts against the stroke test device (600); The controller (700) is arranged on the test box (100) and is respectively connected to the stroke test device (600) and the oil supply device (400).

2. A hydraulic cylinder performance testing device according to claim 1, characterized in that: The baffle (200) is provided with a through hole (201), and the piston rod (801) passes through the through hole (201) and abuts against the stroke testing device (600).

3. A hydraulic cylinder performance testing device according to claim 1, characterized in that: The inner walls of the test box (100) and the box cover (110) are respectively provided with mounting grooves (202), and sealing gaskets are respectively provided on both sides of the mounting groove (202), and the baffle (200) is inserted between the two sealing gaskets.

4. A hydraulic cylinder performance testing device according to claim 1, characterized in that: The locking device (300) comprises a connecting plate (310) and a locking plate (320), wherein: The connecting plate (310) is disposed in the second test area (102), and two sides of the connecting plate (310) are respectively connected to two opposite sides of the test box (100); Limiting portions are provided on opposite sides of the connecting plate (310) and the locking plate (320), and the hydraulic cylinder (800) is arranged between the two limiting portions and locks the connecting plate (310) and the locking plate (320) by means of bolts.

5. A hydraulic cylinder performance testing device according to claim 1, characterized in that: The oil supply device (400) comprises an oil supply control box (410), an oil inlet pipeline (420) and an oil outlet pipeline (430), wherein: The oil supply control box (410) is arranged outside the test box (100); The oil inlet pipeline (420) and the oil outlet pipeline (430) are respectively connected to the oil supply control box (410), and respectively extend inward through the second test area (102) to be connected to the oil inlet and the oil outlet of the hydraulic cylinder (800).

6. A hydraulic cylinder performance testing device according to claim 5, characterized in that: The oil supply control box (410) comprises an oil supply tank and an oil supply pump. The oil supply tank is connected to the oil supply pump, and the oil inlet pipeline (420) and the oil outlet pipeline (430) are respectively connected to the oil supply pump.

7. A hydraulic cylinder performance testing device according to claim 1, characterized in that: The salt mist spraying device (500) comprises a salt mist generator (510), a water outlet pipe (520), a spraying pipe (530) and a water inlet pipe (540), wherein: The salt spray generator (510) is arranged outside the test box (100); One end of the water outlet pipe (520) is connected to the salt spray generator (510), and the other end extends into the second test area (102); The spray pipe (530) is disposed in the second test area (102); the spray pipe (530) is an arc-shaped pipe and surrounds the hydraulic cylinder (800); and the spray pipe (530) is connected to the water outlet pipe (520); One end of the water inlet pipe (540) is in communication with the bottom of the second test area (102), and the other end is connected to the salt spray generator (510).

8. A hydraulic cylinder performance testing device according to claim 7, characterized in that: The spray pipe (530) is provided with a plurality of spray heads at different angles.

9. A hydraulic cylinder performance testing device according to claim 1, characterized in that: The stroke testing device (600) comprises a crossbar (610), a mounting plate (620), a pressure sensor (630), an annular plate (640) and a spring (650), wherein: The crossbar (610) is arranged in the first testing area (101); The mounting plate (620) is slidably disposed on the cross bar (610); The pressure sensor (630) is arranged on a side of the mounting plate (620) close to the baffle (200), and the pressure sensor (630) is arranged on the central axis of the piston rod (801); The annular plate (640) is sleeved on the cross bar (610) and is locked by a locking bolt; The spring (650) is sleeved on the cross bar (610), and two ends of the spring (650) are respectively connected to the mounting plate (620) and the annular plate (640).

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