Cab overturning hydraulic cylinder swing test device and swing test method

Abstract

The present application belongs to the technical field of hydraulic cylinder swing test, and discloses a cab overturning hydraulic cylinder swing test device and a swing test method. The cab overturning hydraulic cylinder swing test device comprises a base, a first loading mechanism, a second loading mechanism, a third loading mechanism and a loading platform. The first loading mechanism comprises a first telescopic driving part, a first sensor and a first transmission rod. The fixed end of the first telescopic driving part is arranged on the base, and the telescopic end of the first telescopic driving part is connected to the first sensor. The first sensor is rotatably connected to one end of the first transmission rod. The first transmission rod can move in the first direction. The loading platform is rotatably arranged with the first transmission rod, the second transmission rod and the third transmission rod. The swing state consistent with the actual vehicle is realized based on three directions, the swing test of the hydraulic cylinder based on the road spectrum is completed, the accuracy and reliability of the hydraulic cylinder test are improved, the operation of the whole system is intuitively analyzed, and the abnormal situation can be treated in time.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder swing testing technology, and more particularly to a swing testing device and method for a hydraulic cylinder used for cab rollover. Background Technology

[0002] The cab tilting hydraulic cylinder, a key component of a vehicle, is a hydraulic actuator that uses hydraulic oil as its working medium. Installed on the vehicle, it is driven by pressure generated by the hydraulic system to tilt the cab around a specific axis. The cab tilting hydraulic cylinder mainly consists of a cylinder barrel, piston, piston rod, end caps, and sealing devices. During operation, pressurized oil supplied by the hydraulic pump enters different chambers of the hydraulic cylinder, pushing the piston and piston rod to extend and retract, thereby smoothly raising or lowering the cab.

[0003] Currently, the common method for verifying the reliability of the cab tilting hydraulic cylinder's oscillation is to apply a constant-frequency axial load to the cylinder in the vertical direction. However, this loading method differs significantly from the actual stress state of the hydraulic cylinder when the cab is in motion. During vehicle movement, the cab tilting hydraulic cylinder is subjected to forces from different directions, and existing vertical constant-frequency axial loading tests cannot simulate these complex actual working conditions.

[0004] Therefore, there is an urgent need for a test device and test method for the swing of the hydraulic cylinder for the cab tilting mechanism, in order to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a swing test device for a cab-tilting hydraulic cylinder, which achieves a swing state consistent with the actual vehicle in three directions, thereby improving the accuracy and reliability of the hydraulic cylinder test. Furthermore, it allows for intuitive analysis of the entire system's operation, enabling timely handling of any abnormal situations.

[0006] To address the aforementioned problems in the existing technology, the present invention adopts the following technical solution:

[0007] The cab tilting hydraulic cylinder swing test device includes:

[0008] The base is rotatably mounted to one end of the hydraulic cylinder;

[0009] The first loading mechanism includes a first telescopic drive member, a first sensor, and a first transmission rod. The fixed end of the first telescopic drive member is disposed on the base, and the telescopic end of the first telescopic drive member is connected to the first sensor. The first sensor is rotatably connected to one end of the first transmission rod, and the first transmission rod is capable of moving along a first direction.

[0010] The second loading mechanism includes a second telescopic drive member, a second sensor, and two parallel second transmission rods. The fixed end of the second telescopic drive member is disposed on the base, and the telescopic end of the second telescopic drive member is connected to the second sensor. The second sensor is rotatably connected to one end of the two second transmission rods. The two second transmission rods can move along a second direction, which is perpendicular to the first direction.

[0011] The third loading mechanism includes a third telescopic drive, a third sensor, and a third transmission rod. The fixed end of the third telescopic drive is disposed on the base, and the telescopic end of the third telescopic drive is connected to the third sensor. The third sensor is rotatably connected to one end of the third transmission rod. The second transmission rod can move along a third direction, and the third direction is perpendicular to both the first direction and the second direction.

[0012] The loading platform is rotatably configured with respect to the first transmission rod, the second transmission rod, and the third transmission rod, and is also rotatably configured with respect to the other end of the hydraulic cylinder.

[0013] Preferably, the cab tilting hydraulic cylinder swing test device further includes a servo valve, which is signal-connected to the first telescopic drive, the second telescopic drive, and the third telescopic drive. The servo valve is used to control the opening or closing of the first telescopic drive, the second telescopic drive, and the third telescopic drive.

[0014] Preferably, the first loading mechanism further includes a first fixing frame and a first limiting plate. The first fixing frame is installed on the base and has a first sliding groove. The first limiting plate is slidably disposed in the first sliding groove along the height direction of the first fixing frame. The first limiting plate has a through hole, and the telescopic end of the first telescopic drive member passes through the through hole.

[0015] Preferably, the first loading mechanism further includes a first lifting adjustment assembly, which includes an adjustment handle, a lead screw, and a slider. The lead screw extends along the height direction of the first fixed frame and is rotatably disposed on the first fixed frame. The adjustment handle is connected to the end of the lead screw. The slider is disposed on the first telescopic drive member and is throttle-connected to the lead screw so that the slider can move along the extension direction of the lead screw.

[0016] Preferably, the first loading mechanism further includes a first lifting ring, which is fixedly installed on the first fixing frame.

[0017] Preferably, the cab tilting hydraulic cylinder swing test device further includes multiple first steering ball joints, and the loading platform includes a first end face, a second end face, and a third end face arranged perpendicularly to each other. The first end face is rotatably connected to the first transmission rod through the first steering ball joint, the second end face is rotatably connected to the second transmission rod through the first steering ball joint, and the third end face is rotatably connected to the third transmission rod through the first steering ball joint.

[0018] Preferably, the cab tilting hydraulic cylinder swing test device further includes a plurality of second steering ball joints, the first sensor is rotatably connected to the first transmission rod through the second steering ball joint, the second sensor is rotatably connected to the second transmission rod through the second steering ball joint, and the third sensor is rotatably connected to the third transmission rod through the second steering ball joint.

[0019] Preferably, the cab tilting hydraulic cylinder swing test device further includes a support frame, which includes two columns and a crossbeam. The two columns are arranged in parallel and spaced apart and installed on the base. The crossbeam is connected between the two columns, and the third loading mechanism is slidably disposed on the crossbeam.

[0020] To achieve the above objectives, the present invention also provides a method for testing the swing of a cab tilting hydraulic cylinder. Through the implementation of the above-described cab tilting hydraulic cylinder swing testing device, the method for testing the swing of a cab tilting hydraulic cylinder includes:

[0021] S100: The two ends of the hydraulic cylinder are respectively rotated and installed on the loading platform and the base using clamps;

[0022] S200: Under the driving action of the first telescopic drive member, the second telescopic drive member and the third telescopic drive member, the first transmission rod along the first direction, the second transmission rod along the second direction and the third transmission rod along the third direction simultaneously apply force to the loading platform, so that the end of the hydraulic cylinder swings with the loading platform.

[0023] S300: The oscillation data of the hydraulic cylinder is monitored in real time by the first sensor, the second sensor and the third sensor.

[0024] Preferably, the cab tilting hydraulic cylinder swing test method further includes the following steps between S100 and S200:

[0025] S110: Import the road spectrum collected from the actual vehicle into the host computer, and send a signal to the servo valve through the host computer. The servo valve controls the start and stop of the first telescopic drive, the second telescopic drive, and the third telescopic drive.

[0026] The beneficial effects of this invention are as follows:

[0027] The cab tilting hydraulic cylinder swing test device provided by this invention has a base rotatably connected to one end of the hydraulic cylinder. The first loading mechanism includes a first telescopic drive member, a first sensor, and a first transmission rod. The fixed end of the first telescopic drive member is located on the base, and the telescopic end of the first telescopic drive member is connected to the first sensor. The first sensor is rotatably connected to one end of the first transmission rod, which is capable of moving along a first direction. The loading platform is rotatably connected to the first transmission rod of the first loading mechanism, the second transmission rod of the second loading mechanism, and the third transmission rod of the third loading mechanism. The other end of the loading platform is also rotatably connected to the hydraulic cylinder. Based on road spectrum data collected from the actual vehicle, the first telescopic drive component drives the first transmission rod to move along the first direction, applying a force in the first direction to the loading platform. Simultaneously, the second telescopic drive component drives the second transmission rod to move along the second direction, applying a force in the second direction to the loading platform. At the same time, the third telescopic drive component drives the third transmission rod to move along the third direction, applying a force in the third direction to the loading platform. This allows the hydraulic cylinder to swing in sync with the loading platform, achieving a swing state consistent with the actual vehicle in three directions. This ensures the hydraulic cylinder under test is in a swing state identical to that of the actual vehicle, thus completing the road spectrum-based swing test of the hydraulic cylinder and improving the accuracy and reliability of the hydraulic cylinder test. During the swinging process of the hydraulic cylinder, the first, second, and third sensors record and monitor the data for intuitive analysis of the entire system's operation, allowing for timely handling of any abnormalities.

[0028] The present invention provides a method for testing the swing of a hydraulic cylinder for cab tilting. The two ends of the hydraulic cylinder are rotatably mounted on a loading platform using clamps. Under the driving action of the first, second, and third telescopic drive members, a first transmission rod along a first direction, a second transmission rod along a second direction, and a third transmission rod along a third direction simultaneously apply force to the loading platform, causing the end of the hydraulic cylinder to swing with the loading platform. The swing data of the hydraulic cylinder is monitored in real time by a first, second, and third sensor. By achieving a swing state consistent with that of a real vehicle in three directions, the hydraulic cylinder under test can be in a swing state consistent with that of a real vehicle, thus completing the swing test of the hydraulic cylinder based on road spectrum, improving the accuracy and reliability of the hydraulic cylinder test. A direct analysis of the entire system's operation allows for timely handling of any abnormalities. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the cab tilting hydraulic cylinder swing test device provided in Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the first loading mechanism provided in Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the second loading mechanism provided in Embodiment 1 of the present invention;

[0032] Figure 4 This is a schematic diagram of the third loading mechanism provided in Embodiment 1 of the present invention;

[0033] Figure 5 This is a schematic diagram showing the connection between the loading platform and the hydraulic cylinder provided in Embodiment 1 of the present invention;

[0034] Figure 6 This is a front view of the support frame provided in Embodiment 1 of the present invention.

[0035] Figure 7 The flowchart shows the test method for the hydraulic cylinder swing of the cab tilting mechanism provided in Embodiment 2 of the present invention.

[0036] Figure label:

[0037] 100. Hydraulic cylinder;

[0038] 1. Base;

[0039] 2. First loading mechanism; 21. First telescopic drive component; 22. First sensor; 23. First transmission rod; 24. First fixing frame; 25. First limiting plate; 26. Slide groove; 27. First lifting adjustment assembly; 271. Adjustment handle; 272. Lead screw; 273. Sliding component; 28. First lifting ring;

[0040] 3. Second loading mechanism; 31. Second telescopic drive component; 32. Second sensor; 33. Second transmission rod; 34. Second fixing frame; 35. Second limiting plate; 36. Second lifting adjustment assembly; 37. Second lifting ring;

[0041] 4. Third loading mechanism; 41. Third telescopic drive component; 42. Third sensor; 43. Third transmission rod; 44. Third fixing frame;

[0042] 5. Load the platform;

[0043] 6. Servo valve;

[0044] 7. First steering ball joint;

[0045] 8. Second steering ball joint;

[0046] 9. Support frame; 91. Column; 92. Horizontal beam. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] Example 1

[0052] like Figures 1-6As shown, in this embodiment, the cab tilting hydraulic cylinder swing test device includes a base 1, a first loading mechanism 2, a second loading mechanism 3, a third loading mechanism 4, and a loading platform 5. The base 1 is rotatably connected to one end of the hydraulic cylinder 100. The first loading mechanism 2 includes a first telescopic drive member 21, a first sensor 22, and a first transmission rod 23. The fixed end of the first telescopic drive member 21 is located on the base 1, and the telescopic end of the first telescopic drive member 21 is connected to the first sensor 22. The first sensor 22 is rotatably connected to one end of the first transmission rod 23, which can move along a first direction. The second loading mechanism 3 includes a second telescopic drive member 31, a second sensor 32, and two parallel second transmission rods 33. The fixed end of the second telescopic drive member 31 is located on the base 1, and the telescopic end of the second telescopic drive member 31 is connected to the second sensor 32. The second sensor 32 is rotatably connected to one end of each of the two second transmission rods 33, which can move along a second direction, which is perpendicular to the first direction. The third loading mechanism 4 includes a third telescopic drive member 41, a third sensor 42, and a third transmission rod 43. The fixed end of the third telescopic drive member 41 is disposed on the base 1, and the telescopic end of the third telescopic drive member 41 is connected to the third sensor 42. The third sensor 42 is rotatably connected to one end of the third transmission rod 43. The second transmission rod 33 can move along a third direction, which is perpendicular to both the first and second directions. The loading platform 5 is rotatably disposed with the first transmission rod 23, the second transmission rod 33, and the third transmission rod 43, and is also rotatably disposed with the other end of the hydraulic cylinder 100.

[0053] The first direction is AB, the second direction is CD, and the third direction is EF. The first telescopic drive component 21 is an electric hydraulic cylinder 100, and the first sensor 22 is a force sensor. The fixed end of the first telescopic drive component 21 along the first direction is fixedly mounted on the base 1 by a fixing bracket. The first sensor 22 is mounted on the piston rod of its telescopic end. The first sensor 22 is used to detect the force, displacement, acceleration, and other data of the hydraulic cylinder 100 along the first direction in real time. The second telescopic drive component 31 is also an electric hydraulic cylinder 100, and the second sensor 32 is a force sensor. The fixed end of the second telescopic drive component 31 along the second direction is fixedly mounted on the base 1 by a fixing bracket. The second sensor 32 is mounted on the piston rod of its telescopic end. The rear end of the guide rod is fixed to the housing of the second telescopic drive component. The second sensor 32 and the front end of the guide rod are fixed to the extension platform by bolts. The extension platform is connected to two parallel and spaced second transmission rods 33. The second sensor 32 is used to detect the force, displacement, acceleration, and other data of the hydraulic cylinder 100 along the second direction in real time. The third telescopic drive component 41 is also configured as an electric hydraulic cylinder 100, and the third sensor 42 is configured as a force sensor. The fixed end of the third telescopic drive component 41 along the third direction is fixedly mounted on the base 1 through a fixing bracket. The piston rod of its telescopic end is connected to the extension platform and the third sensor 42 through a universal coupling. The extension platform is connected to the third transmission rod 43. The third sensor 42 is used to detect data such as force, displacement, and acceleration of the hydraulic cylinder 100 along the first direction in real time. The first transmission rod 23, the second transmission rod 33, and the third transmission rod 43 are rotatably connected to the corresponding sides of the loading platform 5 through steering ball joints. The upper end of the hydraulic cylinder 100 is rotatably connected to the loading platform 5 through a clamp, and the lower end of the hydraulic cylinder 100 is rotatably connected to the base 1 through a clamp.

[0054] Based on road spectrum data collected from the actual vehicle, the first telescopic drive member 21 drives the first transmission rod 23 to move along the first direction, applying a force in the first direction to the loading platform 5. Simultaneously, the second telescopic drive member 31 drives the second transmission rod 33 to move along the second direction, applying a force in the second direction to the loading platform 5. At the same time, the third telescopic drive member 41 drives the third transmission rod 43 to move along the third direction, applying a force in the third direction to the loading platform 5. This allows the hydraulic cylinder 100 to swing in sync with the loading platform 5, achieving a swing state consistent with the actual vehicle in three directions. This ensures the hydraulic cylinder 100 is in a swing state consistent with the actual vehicle, thus completing the road spectrum-based swing test of the hydraulic cylinder 100 and improving the accuracy and reliability of the hydraulic cylinder 100 test. During the swinging process of the hydraulic cylinder 100, the first sensor 22, the second sensor 32, and the third sensor 42 record and monitor the data to provide a direct analysis of the entire system's operation and allow for timely handling of any abnormalities.

[0055] Continue to refer to Figures 1-6 The cab tilting hydraulic cylinder swing test device also includes a servo valve 6, which is signal-connected to the first telescopic drive 21, the second telescopic drive 31 and the third telescopic drive 41. The servo valve 6 is used to control the opening or closing of the first telescopic drive 21, the second telescopic drive 31 and the third telescopic drive 41. There are three servo valves 6, which are respectively installed on the first loading mechanism 2, the second loading mechanism 3, and the third loading mechanism 4. The road spectrum data collected from the actual vehicle is imported into the host computer, which controls the servo valves 6 in real time. The servo valves 6 can control the opening and closing of the first telescopic drive member 21, the second telescopic drive member 31, and the third telescopic drive member 41. That is, according to the road spectrum of the actual vehicle, the servo valves 6 can control the first telescopic drive member 21 to drive the first transmission rod 23 to move in the first direction to apply a force in the first direction to the loading platform 5. At the same time, the servo valves 6 can control the second telescopic drive member 31 to drive the second transmission rod 33 to move in the second direction to apply a force in the second direction to the loading platform 5. At the same time, the servo valves 6 can control the third telescopic drive member 41 to drive the third transmission rod 43 to move in the third direction to apply a force in the third direction to the loading platform 5. Thus, the hydraulic cylinder 100 can swing with the loading platform 5, achieving a swing state consistent with the actual vehicle based on the three directions.

[0056] Reference Figure 2 The first loading mechanism 2 also includes a first fixed frame 24 and a first limiting plate 25. The first fixed frame 24 is mounted on the base 1 and has a first sliding groove 26. The first limiting plate 25 is slidably disposed in the first sliding groove 26 along the height direction of the first fixed frame 24. The first limiting plate 25 has a through hole, through which the telescopic end of the first telescopic drive member 21 passes. The first telescopic drive member 21 is fixedly mounted on the base 1 by the first fixed frame 24. The left and right ends of the first limiting plate 25 are located in the first sliding groove 26 of the first fixed frame 24 and can slide up and down along the first sliding groove 26 in the vertical height direction to drive the first telescopic drive member 21 to adjust in the vertical height direction to meet the force requirements of the hydraulic cylinder 100 in three different directions. Similarly, referring to... Figure 3 The second loading mechanism 3 is also equipped with the second fixed frame 34 and the second limiting plate 35 in the first loading mechanism 2. The structure and principle are basically the same, so we will not go into too much detail here.

[0057] Continue to refer to Figure 2The first loading mechanism 2 also includes a first lifting adjustment assembly 27, which includes an adjustment handle 271, a lead screw 272, and a slider 273. The lead screw 272 extends along the height direction of the first fixed frame 24 and is rotatably mounted on the first fixed frame 24. The adjustment handle 271 is connected to the end of the lead screw 272. The slider 273 is mounted on the first telescopic drive member 21 and is pulsatorically connected to the lead screw 272 so that the slider 273 can move along the extension direction of the lead screw 272. The adjustment handle 271 is pulsatorically connected to the lead screw 272 through a gearbox. Rotating the adjustment handle 271 drives the lead screw 272 to rotate through the gearbox. The slider 273 is rotatably mounted on the lead screw 272. The internal thread of the slider 273 is pulsatorically connected to the external thread of the lead screw 272. Rotation of the lead screw 272 can drive the sliding frame to move along the axis of the lead screw 272, thereby adjusting the height of the first telescopic drive member 21 in the vertical direction. Similarly, refer to Figure 3 The second loading mechanism 3 is also equipped with the second lifting adjustment component 36 in the first loading mechanism 2, and its structural principle is basically the same, so it will not be described in detail here. Preferably, the first slide groove 26 and the lead screw 272 are provided with scales to facilitate precise control of the position of the sliding member 273 and the limiting plate, further improving the accuracy of the test.

[0058] Continue to refer to Figure 2 The first loading mechanism 2 also includes a first lifting ring 28, which is fixedly installed on the first fixed frame 24, allowing the first loading mechanism 2 and the base 1 to be suspended above the ground by the hook of the crane onto the first lifting ring 28, thus saving ground space. Similarly, referring to... Figure 3 The second loading mechanism 3 is also equipped with the second lifting ring 37 in the first loading mechanism 2, and the structure and principle are basically the same, so we will not go into too much detail here.

[0059] Reference Figure 5 The cab-tilting hydraulic cylinder swing test device also includes multiple first steering ball joints 7. The loading platform 5 includes a first end face, a second end face, and a third end face arranged perpendicularly in pairs. The first end face is rotatably connected to the first transmission rod 23 through the first steering ball joint 7, the second end face is rotatably connected to the second transmission rod 33 through the first steering ball joint 7, and the third end face is rotatably connected to the third transmission rod 43 through the first steering ball joint 7. The hydraulic cylinder 100 is installed between the lower dead center clamp of the base 1 and the upper dead center clamp of the loading platform 5, which can simulate the actual vehicle installation arrangement of the hydraulic cylinder 100. The first transmission rod 23, the second transmission rod 33, and the third transmission rod 43 are respectively fixed to the outer side of the loading platform 5 through their respective first steering ball joints 7, which reduces vibration during movement, ensures stable force transmission, and improves the stability and service life of the test device.

[0060] Reference Figure 1The cab tilting hydraulic cylinder swing test device also includes multiple second steering ball joints 8. The first sensor 22 is rotatably connected to the first transmission rod 23 through the second steering ball joint 8. The second sensor 32 is rotatably connected to the second transmission rod 33 through the second steering ball joint 8. The third sensor 42 is rotatably connected to the third transmission rod 43 through the second steering ball joint 8, which plays a certain role in shock absorption.

[0061] Reference Figure 1 and Figure 6 The hydraulic cylinder swing test device for cab tilting also includes a support frame 9, which comprises two columns 91 and a crossbeam 92. The two columns 91 are arranged in parallel and spaced apart and installed on the base 1. The crossbeam 92 is connected between the two columns 91, and the third loading mechanism 4 is slidably disposed on the crossbeam 92. The columns 91 are fixed to the base 1 by fixing bolts. The crossbeam 92 is fixed to multiple fixing holes arranged along the height direction on the columns 91 by fixing bolts on the crossbeam 92 according to the height of the hydraulic cylinder 100, so as to adjust the height of the crossbeam 92 and thus meet various test requirements of the hydraulic cylinder 100. Optionally, an environmental chamber can be added around the hydraulic cylinder 100 to change the test environment such as high and low temperature, rain, and dust while the swing test of the hydraulic cylinder 100 under test is being conducted.

[0062] Example 2

[0063] like Figure 7 As shown, this embodiment provides a method for testing the swing of a cab-tilting hydraulic cylinder. Through the implementation of the aforementioned cab-tilting hydraulic cylinder swing testing device, the method for testing the swing of a cab-tilting hydraulic cylinder includes:

[0064] S100: The two ends of the hydraulic cylinder 100 are respectively rotated and installed on the loading platform 5 and the base 1 using clamps.

[0065] The upper end of the hydraulic cylinder 100 is rotatably connected to the loading platform 5 via a clamp, and the lower end of the hydraulic cylinder 100 is rotatably connected to the base 1 via a clamp, which can simulate the actual vehicle installation arrangement of the hydraulic cylinder 100.

[0066] S110: Import the road spectrum collected from the actual vehicle into the host computer, and send a signal to the servo valve 6 through the host computer. The servo valve 6 controls the start and stop of the first telescopic drive 21, the second telescopic drive 31 and the third telescopic drive 41.

[0067] Servo valve 6 is signal-connected to the first telescopic drive 21, the second telescopic drive 31 and the third telescopic drive 41. Servo valve 6 is used to control the opening or closing of the first telescopic drive 21, the second telescopic drive 31 and the third telescopic drive 41.

[0068] S200: Under the driving action of the first telescopic drive member 21, the second telescopic drive member 31 and the third telescopic drive member 41, the first transmission rod 23 along the first direction, the second transmission rod 33 along the second direction and the third transmission rod 43 along the third direction simultaneously apply force to the loading platform 5, so that the end of the hydraulic cylinder 100 swings with the loading platform 5.

[0069] Based on the actual vehicle's road conditions, the servo valve 6 can control the first telescopic drive member 21 to drive the first transmission rod 23 to move along the first direction, thereby applying a force in the first direction to the loading platform 5. Simultaneously, the servo valve 6 can control the second telescopic drive member 31 to drive the second transmission rod 33 to move along the second direction, thereby applying a force in the second direction to the loading platform 5. At the same time, the servo valve 6 can control the third telescopic drive member 41 to drive the third transmission rod 43 to move along the third direction, thereby applying a force in the third direction to the loading platform 5. This allows the hydraulic cylinder 100 to swing along with the loading platform 5, achieving a swing state consistent with the actual vehicle in three directions. This completes the swing test of the hydraulic cylinder 100 based on the road conditions, improving the accuracy and reliability of the hydraulic cylinder 100 test.

[0070] S300: Real-time monitoring of the swing data of hydraulic cylinder 100 via first sensor 22, second sensor 32 and third sensor 42.

[0071] The first sensor 22 is used to detect data such as force, displacement, and acceleration of the hydraulic cylinder 100 along the first direction in real time. The second sensor 32 is used to detect data such as force, displacement, and acceleration of the hydraulic cylinder 100 along the second direction in real time. The third sensor 42 is used to detect data such as force, displacement, and acceleration of the hydraulic cylinder 100 along the first direction in real time. During the swinging process of the hydraulic cylinder 100, the first sensor 22, the second sensor 32, and the third sensor 42 record and monitor the data to allow for intuitive analysis of the overall system operation and timely handling of any abnormalities.

[0072] The cab-tilting hydraulic cylinder swing test method provided in this embodiment, through the implementation of the cab-tilting hydraulic cylinder swing test device, rotatably mounts both ends of the hydraulic cylinder 100 onto the loading platform 5 via clamps; under the driving action of the first telescopic drive member 21, the second telescopic drive member 31, and the third telescopic drive member 41, the first transmission rod 23 along the first direction, the second transmission rod 33 along the second direction, and the third transmission rod 43 along the third direction simultaneously apply force to the loading platform 5, causing the end of the hydraulic cylinder 100 to swing with the loading platform 5; the swing data of the hydraulic cylinder 100 is monitored in real time by the first sensor 22, the second sensor 32, and the third sensor 42. A swing state consistent with the actual vehicle is achieved in three directions, enabling the hydraulic cylinder 100 under test to be in a swing state consistent with the actual vehicle, thereby completing the road spectrum-based swing test of the hydraulic cylinder 100, improving the accuracy and reliability of the hydraulic cylinder 100 test. During the swing process of the hydraulic cylinder 100, the first sensor 22, the second sensor 32, and the third sensor 42 record and monitor, so as to intuitively analyze the operation of the entire system and promptly handle any abnormalities.

[0073] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A test device for the swinging of a hydraulic cylinder for a cab tilting mechanism, characterized in that, include: The base (1) is rotatably mounted to one end of the hydraulic cylinder (100); The first loading mechanism (2) includes a first telescopic drive member (21), a first sensor (22) and a first transmission rod (23). The fixed end of the first telescopic drive member (21) is disposed on the base (1), and the telescopic end of the first telescopic drive member (21) is connected to the first sensor (22). The first sensor (22) is rotatably connected to one end of the first transmission rod (23), and the first transmission rod (23) can move along a first direction. The second loading mechanism (3) includes a second telescopic drive member (31), a second sensor (32), and two parallel second transmission rods (33). The fixed end of the second telescopic drive member (31) is disposed on the base (1), and the telescopic end of the second telescopic drive member (31) is connected to the second sensor (32). The second sensor (32) is rotatably connected to one end of the two second transmission rods (33). The two second transmission rods (33) can move along a second direction, which is perpendicular to the first direction. The third loading mechanism (4) includes a third telescopic drive (41), a third sensor (42), and a third transmission rod (43). The fixed end of the third telescopic drive (41) is disposed on the base (1), and the telescopic end of the third telescopic drive (41) is connected to the third sensor (42). The third sensor (42) is rotatably connected to one end of the third transmission rod (43). The second transmission rod (33) can move along a third direction, and the third direction is perpendicular to both the first direction and the second direction. The loading platform (5) is rotatably connected to the first transmission rod (23), the second transmission rod (33) and the third transmission rod (43), and the loading platform (5) is rotatably connected to the other end of the hydraulic cylinder (100); The first loading mechanism (2) further includes a first fixing frame (24) and a first limiting plate (25). The first fixing frame (24) is installed on the base (1). The first fixing frame (24) has a first sliding groove (26). The first limiting plate (25) is slidably disposed in the first sliding groove (26) along the height direction of the first fixing frame (24). The first limiting plate (25) has a through hole. The telescopic end of the first telescopic drive member (21) passes through the through hole.

2. The cab tilting hydraulic cylinder swing test device according to claim 1, characterized in that, The cab tilting hydraulic cylinder swing test device also includes a servo valve (6), which is signal connected to the first telescopic drive (21), the second telescopic drive (31) and the third telescopic drive (41). The servo valve (6) is used to control the opening or closing of the first telescopic drive (21), the second telescopic drive (31) and the third telescopic drive (41).

3. The cab tilting hydraulic cylinder swing test device according to claim 1, characterized in that, The first loading mechanism (2) further includes a first lifting adjustment assembly (27), which includes an adjustment handle (271), a lead screw (272), and a slider (273). The lead screw (272) extends along the height direction of the first fixed frame (24) and is rotatably disposed on the first fixed frame (24). The adjustment handle (271) is connected to the end of the lead screw (272). The slider (273) is disposed on the first telescopic drive member (21) and is connected to the lead screw (272) in a transmission manner so that the slider (273) can move along the extension direction of the lead screw (272).

4. The cab tilting hydraulic cylinder swing test device according to claim 1, characterized in that, The first loading mechanism (2) further includes a first lifting ring (28), which is fixedly installed on the first fixing frame (24).

5. The cab tilting hydraulic cylinder swing test device according to claim 1, characterized in that, The cab tilting hydraulic cylinder swing test device also includes multiple first steering ball joints (7). The loading platform (5) includes a first end face, a second end face and a third end face arranged in pairs perpendicularly. The first end face is rotatably connected to the first transmission rod (23) through the first steering ball joint (7). The second end face is rotatably connected to the second transmission rod (33) through the first steering ball joint (7). The third end face is rotatably connected to the third transmission rod (43) through the first steering ball joint (7).

6. The cab tilting hydraulic cylinder swing test device according to claim 1, characterized in that, The cab tilting hydraulic cylinder swing test device also includes multiple second steering ball joints (8), the first sensor (22) is rotatably connected to the first transmission rod (23) through the second steering ball joint (8), the second sensor (32) is rotatably connected to the second transmission rod (33) through the second steering ball joint (8), and the third sensor (42) is rotatably connected to the third transmission rod (43) through the second steering ball joint (8).

7. The cab tilting hydraulic cylinder swing test device according to claim 1, characterized in that, The cab tilting hydraulic cylinder swing test device also includes a support frame (9), which includes two columns (91) and a crossbeam (92). The two columns (91) are arranged in parallel and spaced apart and installed on the base (1). The crossbeam (92) is connected between the two columns (91). The third loading mechanism (4) is slidably arranged on the crossbeam (92).

8. A test method for the swinging of the hydraulic cylinder for cab tilting, characterized in that, By implementing the cab tilting hydraulic cylinder oscillation test device as described in any one of claims 1-7, the cab tilting hydraulic cylinder oscillation test method includes: S100: The two ends of the hydraulic cylinder (100) are respectively rotated and installed on the loading platform (5) and the base (1) by clamps; S200: Under the driving action of the first telescopic drive member (21), the second telescopic drive member (31) and the third telescopic drive member (41), the first transmission rod (23) along the first direction, the second transmission rod (33) along the second direction and the third transmission rod (43) along the third direction simultaneously apply force to the loading platform (5) so that the end of the hydraulic cylinder (100) swings with the loading platform (5); S300: The swing data of the hydraulic cylinder (100) is monitored in real time by the first sensor (22), the second sensor (32) and the third sensor (42).

9. The method for testing the swing of the hydraulic cylinder for cab tilting according to claim 8, characterized in that, The cab tilting hydraulic cylinder swing test device also includes a servo valve (6), which is signal connected to the first telescopic drive (21), the second telescopic drive (31) and the third telescopic drive (41). The servo valve (6) is used to control the opening or closing of the first telescopic drive (21), the second telescopic drive (31) and the third telescopic drive (41). The cab tilting hydraulic cylinder swing test method also includes the section between S100 and S200: S110: Import the road spectrum collected by the actual vehicle into the host computer, and send a signal to the servo valve (6) through the host computer. The servo valve (6) controls the start and stop of the first telescopic drive (21), the second telescopic drive (31) and the third telescopic drive (41).

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