Swing test device and swing test method for cab turnover hydraulic cylinder

Abstract

The invention belongs to the technical field of hydraulic cylinder swing test, and discloses a cab turnover hydraulic cylinder swing test device and a swing test method.The cab turnover 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, the telescopic end of the first telescopic driving part is connected to the first sensor, the first sensor is rotationally connected with one end of the first transmission rod, and 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, a swing state consistent with a real vehicle is realized based on three directions, a swing test of the hydraulic cylinder based on a road spectrum is completed, the accuracy and reliability of the hydraulic cylinder test are improved, the operation condition of the whole system is visually analyzed, and the test efficiency is improved. And abnormal conditions can be handled in time.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic cylinder swing testing, in particular to a cab flip hydraulic cylinder swing testing device and a swing testing method. Background Art

[0002] The cab tilt hydraulic cylinder, a key component of the vehicle, is a hydraulic actuator that uses hydraulic oil as its working medium. Installed on the vehicle, it relies on the pressure generated by the hydraulic system to tilt the vehicle cab around a specific tilt axis. The cab tilt hydraulic cylinder primarily consists of a cylinder barrel, piston, piston rod, end caps, and a sealing device. During operation, pressurized oil supplied by the hydraulic pump enters the various 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 most common method for verifying the oscillation reliability of the cab-tilt hydraulic cylinder 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 conditions the cylinder experiences when the cab is in service. During vehicle operation, the cab-tilt hydraulic cylinder is subject to forces from various directions, and existing vertical constant-frequency axial loading tests are unable to simulate these complex operating conditions.

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

[0005] The purpose of the present invention is to provide a cab flip hydraulic cylinder swing test device, which realizes a swing state consistent with the actual vehicle based on three directions, improves the accuracy and reliability of the hydraulic cylinder test, and intuitively analyzes the operation of the entire system so that abnormal situations can be dealt with in a timely manner.

[0006] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] Cab tilt hydraulic cylinder swing test device, including:

[0008] A base, rotatably arranged with one end of the hydraulic cylinder;

[0009] A first loading mechanism includes a first telescopic driving member, a first sensor, and a first transmission rod, wherein a fixed end of the first telescopic driving member is disposed on the base, a telescopic end of the first telescopic driving 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 movable in a first direction;

[0010] a second loading mechanism comprising a second telescopic drive member, a second sensor, and two parallel second transmission rods, wherein a fixed end of the second telescopic drive member is disposed on the base, a 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, and the two second transmission rods are capable of moving in a second direction, the second direction being perpendicular to the first direction;

[0011] a third loading mechanism comprising a third telescopic drive member, a third sensor, and a third transmission rod, wherein a fixed end of the third telescopic drive member is disposed on the base, a telescopic end of the third telescopic drive member is connected to the third sensor, the third sensor is rotatably connected to one end of the third transmission rod, and the second transmission rod is movable in a third direction, the third direction being perpendicular to both the first direction and the second direction;

[0012] A loading platform is rotatably arranged with the first transmission rod, the second transmission rod and the third transmission rod, and is rotatably arranged with the other end of the hydraulic cylinder.

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

[0014] Preferably, the first loading mechanism also includes a first fixed frame and a first limit plate, the first fixed frame is installed on the base, the first fixed frame is provided with a first slide groove, the first limit plate is slidably arranged in the first slide groove along the height direction of the first fixed frame, the first limit plate is provided with a through hole, and the telescopic end of the first telescopic drive member is passed through the through hole.

[0015] Preferably, the first loading mechanism also includes a first lifting adjustment component, which includes an adjustment handle, a screw rod and a sliding member, the screw rod extends along the height direction of the first fixed frame and is rotatably arranged on the first fixed frame, the adjustment handle is connected to the end of the screw rod, the sliding member is arranged on the first telescopic driving member, and the sliding member is transmission-connected to the screw rod so that the sliding member can move along the extension direction of the screw rod.

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

[0017] Preferably, the cab flip hydraulic cylinder swing test device also includes a plurality of first steering ball heads, the loading platform includes a first end face, a second end face and a third end face that are vertically arranged in pairs, the first end face is rotatably connected to the first transmission rod through a first steering ball head, the second end face is rotatably connected to the second transmission rod through a first steering ball head, and the third end face is rotatably connected to the third transmission rod through a first steering ball head.

[0018] Preferably, the cab flip hydraulic cylinder swing test device also includes multiple second steering ball heads, the first sensor is rotationally connected to the first transmission rod through the second steering ball head, the second sensor is rotationally connected to the second transmission rod through the second steering ball head, and the third sensor is rotationally connected to the third transmission rod through the second steering ball head.

[0019] Preferably, the cab flip hydraulic cylinder swing test device also 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 arranged on the crossbeam.

[0020] To achieve the above-mentioned purpose, the present invention further provides a cab tilting hydraulic cylinder swing test method. Through the implementation of the above-mentioned cab tilting hydraulic cylinder swing test device, the cab tilting hydraulic cylinder swing test method includes:

[0021] S100: Rotate and install the two ends of the hydraulic cylinder on the loading platform and the base respectively through a clamp;

[0022] S200: Under the driving action of the first telescopic driving member, the second telescopic driving member, and the third telescopic driving 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 along with the loading platform;

[0023] S300: Monitor the swing data of the hydraulic cylinder in real time through the first sensor, the second sensor, and the third sensor.

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

[0025] S110: Importing the road profile collected by the actual vehicle into the host computer, and sending a signal to the servo valve through the host computer, and the servo valve controls the start and stop of the first telescopic drive member, the second telescopic drive member, and the third telescopic drive member.

[0026] The beneficial effects of the present invention are:

[0027] The cab tilt hydraulic cylinder swing test device provided by the present invention comprises a base rotatably mounted on one end of the hydraulic cylinder. A first loading mechanism comprises a first telescopic drive member, a first sensor, and a first transmission rod. The fixed end of the first telescopic drive member is mounted 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 in a first direction. The loading platform is rotatably mounted on 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 loading platform is rotatably mounted on the other end of the hydraulic cylinder. According to the road spectrum data collected by the actual vehicle, the first telescopic drive member drives the first transmission rod to move in the first direction to apply a force in the first direction to the loading platform. At the same time, the second telescopic drive member drives the second transmission rod to move in the second direction to apply a force in the second direction to the loading platform. At the same time, the third telescopic drive member drives the third transmission rod to move in the third direction to apply a force in the third direction to the loading platform, so that the hydraulic cylinder can swing along with the loading platform, and achieve a swing state consistent with the actual vehicle based on three directions, so that the hydraulic cylinder to be tested can be in a swing state consistent with the actual vehicle, thereby completing the swing test of the hydraulic cylinder based on the road spectrum, and improving the accuracy and reliability of the hydraulic cylinder test. During the swinging process of the hydraulic cylinder, the first sensor, the second sensor and the third sensor record and monitor, so as to intuitively analyze the operation of the entire system and deal with abnormal conditions in a timely manner.

[0028] The present invention provides a method for testing the swing of a cab-tilt hydraulic cylinder. The two ends of the hydraulic cylinder are respectively mounted on a loading platform by means of a clamp. Under the driving action of a first telescopic drive member, a second telescopic drive member, and a third telescopic drive member, a first transmission rod in a first direction, a second transmission rod in a second direction, and a third transmission rod in a third direction simultaneously apply force to the loading platform, so that the end of the hydraulic cylinder swings along with the loading platform. The swing data of the hydraulic cylinder is monitored in real time by a first sensor, a second sensor, and a third sensor. A swing state consistent with that of an actual vehicle is achieved based on three directions, so that the hydraulic cylinder to be tested can be in a swing state consistent with that of an actual vehicle, thereby completing a road spectrum-based swing test of the hydraulic cylinder and improving the accuracy and reliability of the hydraulic cylinder test. An intuitive analysis of the operation of the entire system is performed, and any abnormalities found can be promptly addressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a cab tilt hydraulic cylinder swing test device provided in Example 1 of the present invention;

[0030] Figure 2 A schematic structural diagram of a first loading mechanism provided in Example 1 of the present invention;

[0031] Figure 3 A schematic structural diagram of a second loading mechanism provided in Example 1 of the present invention;

[0032] Figure 4 A schematic structural diagram of a third loading mechanism provided in the first embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the connection between the loading platform and the hydraulic cylinder provided in the first embodiment of the present invention;

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

[0035] Figure 7 This is a flow chart of the cab tilting hydraulic cylinder swing test method provided in the second embodiment of the present invention.

[0036] Reference numerals:

[0037] 100. Hydraulic cylinder;

[0038] 1. Base;

[0039] 2. First loading mechanism; 21. First telescopic drive member; 22. First sensor; 23. First transmission rod; 24. First fixing bracket; 25. First limit plate; 26. Slide; 27. First lifting adjustment assembly; 271. Adjustment handle; 272. Screw rod; 273. Sliding member; 28. First lifting ring;

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

[0041] 4. Third loading mechanism; 41. Third telescopic driving member; 42. Third sensor; 43. Third transmission rod; 44. Third fixing bracket;

[0042] 5. Loading platform;

[0043] 6. Servo valve;

[0044] 7. First steering ball joint;

[0045] 8. Second steering ball joint;

[0046] 9. Support frame; 91. Column; 92. Beam. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0048] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," 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 communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0049] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0050] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0051] Example 1

[0052] like Figures 1-6As shown, in this embodiment, the cab tilt 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 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 first telescopic drive member 21 has a fixed end mounted to the base 1, and its telescopic end 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 is movable in 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 second telescopic drive member 31 has a fixed end mounted to the base 1, and its telescopic end is connected to the second sensor 32. The second sensor 32 is rotatably connected to one end of two second transmission rods 33, and the two second transmission rods 33 are movable in 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 mounted on the base 1. 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 is movable in a third direction, which is perpendicular to both the first and second directions. The loading platform 5 is rotatably mounted to the first, second, and third transmission rods 23, 33, and 43. The loading platform 5 is also rotatably mounted to 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 actuator 21 is configured as an electric hydraulic cylinder 100, and the first sensor 22 is configured as a force sensor. The fixed end of the first telescopic actuator 21, which moves in the first direction, is fixedly mounted to the base 1 via a mounting bracket. The piston rod at this telescopic end is mounted with the first sensor 22. The first sensor 22 is used to detect, in real time, the force, displacement, acceleration, and other data of the hydraulic cylinder 100 in the first direction. The second telescopic actuator 31 is also configured as an electric hydraulic cylinder 100, and the second sensor 32 is configured as a force sensor. The fixed end of the second telescopic actuator 31, which moves in the second direction, is fixedly mounted to the base 1 via a mounting bracket. The piston rod at this telescopic end is mounted with the second sensor 32. The rear end of the guide rod is fixed to the housing of the second telescopic actuator. The second sensor 32 and the front end of the guide rod are bolted to the expansion platform. The expansion platform is connected to two parallel and spaced-apart second transmission rods 33. The second sensor 32 is used to detect, in real time, the force, displacement, acceleration, and other data of the hydraulic cylinder 100 in the second direction. The third telescopic drive member 41 is similarly 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 member 41, which extends in the third direction, is fixedly mounted on the base 1 via a mounting bracket. The piston rod at its telescopic end is connected to the expansion platform and the third sensor 42 via a universal joint. The expansion platform is connected to the third transmission rod 43. The third sensor 42 is used to detect the force, displacement, acceleration, and other data of the hydraulic cylinder 100 in the first direction in real time. The first transmission rod 23, the second transmission rod 33, and the third transmission rod 43 are each rotationally connected to the corresponding side of the loading platform 5 via a steering ball joint. The upper end of the hydraulic cylinder 100 is rotationally connected to the loading platform 5 via a clamp, and the lower end of the hydraulic cylinder 100 is rotationally connected to the base 1 via a clamp.

[0054] Based on the road spectrum data collected from the actual vehicle, the first telescopic drive member 21 drives 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 second telescopic drive member 31 drives 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 third telescopic drive member 41 drives the third transmission rod 43 to move in the third direction to apply 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 based on three directions, so that the hydraulic cylinder 100 to be tested can 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 deal with any abnormalities in a timely manner.

[0055] Continue to refer to Figures 1-6 The cab flip hydraulic cylinder swing test device also includes a servo valve 6, which is connected to the first telescopic drive member 21, the second telescopic drive member 31 and the third telescopic drive member 41 by signal. The servo valve 6 is used to control the opening or closing of the first telescopic drive member 21, the second telescopic drive member 31 and the third telescopic drive member 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 by the actual vehicle is imported into the upper computer, and the upper computer controls the servo valve 6 in real time. The servo valve 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 valve 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 first direction force to the loading platform 5. At the same time, the servo valve 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 second direction force 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 in the third direction to apply a third direction force to the loading platform 5, so that the hydraulic cylinder 100 can swing along the loading platform 5, and realize a swinging state consistent with the actual vehicle based on three directions.

[0056] Reference Figure 2 , the first loading mechanism 2 also includes a first fixed frame 24 and a first limit plate 25. The first fixed frame 24 is installed on the base 1. The first fixed frame 24 is provided with a first slide groove 26. The first limit plate 25 is slidably arranged in the first slide groove 26 along the height direction of the first fixed frame 24. The first limit plate 25 is provided with a through hole, and the telescopic end of the first telescopic drive member 21 is passed through the through hole. The first telescopic drive member 21 is fixedly installed on the base 1 through the first fixed frame 24. The left and right ends of the first limit plate 25 are located in the first slide groove 26 of the first fixed frame 24, and can slide up and down along the first slide groove 26 along the vertical height direction to drive the first telescopic drive member 21 to adjust along 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 provided with a second fixing frame 34 and a second limiting plate 35 as those in the first loading mechanism 2. The structural principle is basically the same and will not be described in detail here.

[0057] Continue to refer to Figure 2The first loading mechanism 2 also includes a first lifting adjustment component 27. The first lifting adjustment component 27 includes an adjusting handle 271, a screw rod 272 and a sliding member 273. The screw rod 272 extends along the height direction of the first fixed frame 24 and is rotatably arranged on the first fixed frame 24. The adjusting handle 271 is connected to the end of the screw rod 272. The sliding member 273 is arranged on the first telescopic driving member 21, and the sliding member 273 is transmission-connected with the screw rod 272 so that the sliding member 273 can move along the extension direction of the screw rod 272. The adjusting handle 271 is transmission-connected with the screw rod 272 through a gear box. The adjusting handle 271 is rotated to drive the screw rod 272 to rotate through the transmission of the gear box. The sliding member 273 is rotatably sleeved on the screw rod 272. The internal thread of the sliding member 273 is transmission-connected with the external thread of the screw rod 272. The rotation of the screw rod 272 can drive the sliding frame to move along the axial direction of the screw rod 272, thereby adjusting the height of the first telescopic driving member 21 in the vertical direction. Similarly, referring to Figure 3 The second loading mechanism 3 is also equipped with a second lifting and adjusting assembly 36, similar to 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 chute 26 and the screw rod 272 are provided with scales to facilitate precise control of the position of the slider 273 and the limit plate, further improving the accuracy of the test.

[0058] Continue to refer to Figure 2 The first loading mechanism 2 further includes a first lifting ring 28, which is fixedly mounted on the first fixing frame 24, so that the first loading mechanism 2 and the base 1 can be suspended on the ground by hooking the first lifting ring 28 with a crane, thus saving ground space. Figure 3 The second loading mechanism 3 is also provided with a second lifting ring 37 as in the first loading mechanism 2, and the structural principle is basically the same, which will not be described in detail here.

[0059] Reference Figure 5 The cab flip hydraulic cylinder swing test device also includes a plurality of first steering ball heads 7, and the loading platform 5 includes a first end face, a second end face and a third end face arranged vertically in pairs. The first end face is rotationally connected to the first transmission rod 23 through the first steering ball head 7, the second end face is rotationally connected to the second transmission rod 33 through the first steering ball head 7, and the third end face is rotationally connected to the third transmission rod 43 through the first steering ball head 7. The hydraulic cylinder 100 is installed between the lower dead center fixture of the base 1 and the upper dead center fixture of the loading platform 5, which can simulate the actual vehicle installation layout 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 surface of the loading platform 5 through their respective first steering ball heads 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 flip hydraulic cylinder swing test device also includes multiple second steering ball heads 8. The first sensor 22 is rotatably connected to the first transmission rod 23 through the second steering ball head 8, the second sensor 32 is rotatably connected to the second transmission rod 33 through the second steering ball head 8, and the third sensor 42 is rotatably connected to the third transmission rod 43 through the second steering ball head 8, which plays a certain shock-absorbing role.

[0061] Reference Figure 1 and Figure 6 The cab tilt 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. The columns 91 are fixed to the base 1 by fixing bolts. The crossbeam 92 is fixed to multiple fixing holes of the columns 91 spaced apart along the height direction by fixing bolts on the crossbeam 92 according to the height of the hydraulic cylinder 100. The height of the crossbeam 92 can be adjusted to meet various test requirements of the hydraulic cylinder 100. Optionally, an environmental chamber is added around the hydraulic cylinder 100 to change the test environment such as high and low temperature, rain, dust, etc. while performing the swing test of the hydraulic cylinder 100 to be tested.

[0062] Example 2

[0063] like Figure 7 As shown, this embodiment provides a cab flip hydraulic cylinder swing test method. Through the implementation of the above cab flip hydraulic cylinder swing test device, the cab flip hydraulic cylinder swing test method includes:

[0064] S100: The two ends of the hydraulic cylinder 100 are rotated and mounted on the loading platform 5 and the base 1 respectively through a clamp.

[0065] 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, which can simulate the actual vehicle installation layout of the hydraulic cylinder 100.

[0066] S110: The road profile collected by the actual vehicle is imported into the host computer, and a signal is sent to the servo valve 6 through the host computer. The servo valve 6 controls the start and stop of the first telescopic drive member 21, the second telescopic drive member 31 and the third telescopic drive member 41.

[0067] The servo valve 6 is connected to the first telescopic driving member 21 , the second telescopic driving member 31 and the third telescopic driving member 41 by signals. The servo valve 6 is used to control the opening or closing of the first telescopic driving member 21 , the second telescopic driving member 31 and the third telescopic driving member 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 along with the loading platform 5.

[0069] According to the road spectrum of the actual vehicle, the servo valve 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 valve 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 valve 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, so that the hydraulic cylinder 100 can swing along the loading platform 5, and achieve a swinging state consistent with the actual vehicle based on three directions, thereby completing the swing test of the hydraulic cylinder 100 based on the road spectrum, thereby improving the accuracy and reliability of the test of the hydraulic cylinder 100.

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

[0071] First sensor 22 is used to detect, in real time, the force, displacement, acceleration, and other data of hydraulic cylinder 100 along a first direction; second sensor 32 is used to detect, in real time, the force, displacement, acceleration, and other data of hydraulic cylinder 100 along a second direction; and third sensor 42 is used to detect, in real time, the force, displacement, acceleration, and other data of hydraulic cylinder 100 along the first direction. During the swinging of hydraulic cylinder 100, first sensor 22, second sensor 32, and third sensor 42 record and monitor data, enabling intuitive analysis of the entire system's operation and prompt resolution of any abnormalities.

[0072] This embodiment provides a cab tilt hydraulic cylinder swing test method. Using a cab tilt hydraulic cylinder swing test device, the ends of the hydraulic cylinder 100 are pivotally mounted on the loading platform 5 via a clamp. Driven by the first, second, and third telescopic drive members 21, 31, and 41, the first transmission rod 23 in the first direction, the second transmission rod 33 in the second direction, and the third transmission rod 43 in the third direction simultaneously apply force to the loading platform 5, causing the ends of the hydraulic cylinder 100 to swing with the loading platform 5. The first, second, and third sensors 22, 32, and 42 monitor the swing data of the hydraulic cylinder 100 in real time. By achieving a swing state consistent with that of an actual vehicle in three directions, the hydraulic cylinder 100 under test is placed in a swing state consistent with that of an actual vehicle, thereby completing a road spectrum-based swing test of the hydraulic cylinder 100 and improving the accuracy and reliability of the hydraulic cylinder 100 test. During the swing process of the hydraulic cylinder 100, the first, second, and third sensors 22, 32, and 42 record and monitor the data, enabling intuitive analysis of the overall system operation and prompt resolution of any abnormalities.

[0073] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Cab tilt hydraulic cylinder swing test device, characterized in that: include: A base (1) is rotatably mounted on one end of the hydraulic cylinder (100); A first loading mechanism (2) comprises a first telescopic driving member (21), a first sensor (22) and a first transmission rod (23), wherein a fixed end of the first telescopic driving member (21) is arranged on the base (1), a telescopic end of the first telescopic driving 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) is capable of moving in a first direction; A second loading mechanism (3) comprises a second telescopic driving member (31), a second sensor (32) and two second transmission rods (33) arranged in parallel, wherein the fixed end of the second telescopic driving member (31) is arranged on the base (1), the telescopic end of the second telescopic driving 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), and the two second transmission rods (33) are capable of moving along a second direction, and the second direction is arranged perpendicular to the first direction; a third loading mechanism (4), comprising a third telescopic driving member (41), a third sensor (42) and a third transmission rod (43); a fixed end of the third telescopic driving member (41) is arranged on the base (1); a telescopic end of the third telescopic driving 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); and the second transmission rod (33) is capable of moving along a third direction, and the third direction is arranged perpendicular to both the first direction and the second direction; A loading platform (5) is provided, wherein the loading platform (5) and the first transmission rod (23), the second transmission rod (33) and the third transmission rod (43) are all rotatably arranged, and the loading platform (5) is rotatably arranged with the other end of the hydraulic cylinder (100).

2. The cab tilt hydraulic cylinder swing test device according to claim 1, characterized in that: The cab tilting hydraulic cylinder swing test device further comprises a servo valve (6), wherein the servo valve (6) is connected to the first telescopic drive member (21), the second telescopic drive member (31), and the third telescopic drive member (41) via signals, and the servo valve (6) is used to control the opening or closing of the first telescopic drive member (21), the second telescopic drive member (31), and the third telescopic drive member (41).

3. The cab tilt hydraulic cylinder swing test device according to claim 1, characterized in that: The first loading mechanism (2) further comprises a first fixing frame (24) and a first limiting plate (25), wherein the first fixing frame (24) is mounted on the base (1), the first fixing frame (24) is provided with a first sliding groove (26), the first limiting plate (25) is slidably arranged in the first sliding groove (26) along the height direction of the first fixing frame (24), the first limiting plate (25) is provided with a through hole, and the telescopic end of the first telescopic driving member (21) is passed through the through hole.

4. The cab tilt hydraulic cylinder swing test device according to claim 3, characterized in that: The first loading mechanism (2) further comprises a first lifting adjustment component (27), the first lifting adjustment component (27) comprising an adjustment handle (271), a screw rod (272) and a sliding member (273), the screw rod (272) extending along the height direction of the first fixed frame (24) and being rotatably arranged on the first fixed frame (24), the adjustment handle (271) being connected to the end of the screw rod (272), the sliding member (273) being arranged on the first telescopic driving member (21), and the sliding member (273) being transmission-connected to the screw rod (272) so that the sliding member (273) can move along the extension direction of the screw rod (272).

5. The cab tilt hydraulic cylinder swing test device according to claim 3, characterized in that: The first loading mechanism (2) further includes a first lifting ring (28), and the first lifting ring (28) is fixedly mounted on the first fixing frame (24).

6. The cab tilt hydraulic cylinder swing test device according to claim 1, characterized in that: The cab tilt hydraulic cylinder swing test device further comprises a plurality of first steering ball heads (7); the loading platform (5) comprises a first end face, a second end face and a third end face which are arranged vertically in pairs; the first end face is rotationally connected to the first transmission rod (23) via the first steering ball head (7); the second end face is rotationally connected to the second transmission rod (33) via the first steering ball head (7); and the third end face is rotationally connected to the third transmission rod (43) via the first steering ball head (7).

7. The cab tilt hydraulic cylinder swing test device according to claim 1, characterized in that: The cab tilt hydraulic cylinder swing test device further comprises a plurality of second steering ball heads (8), the first sensor (22) being rotationally connected to the first transmission rod (23) via the second steering ball heads (8), the second sensor (32) being rotationally connected to the second transmission rod (33) via the second steering ball heads (8), and the third sensor (42) being rotationally connected to the third transmission rod (43) via the second steering ball heads (8).

8. The cab tilt hydraulic cylinder swing test device according to claim 1, characterized in that: The cab tilt hydraulic cylinder swing test device further comprises a support frame (9), wherein the support frame (9) comprises two upright posts (91) and a crossbeam (92), wherein the two upright posts (91) are arranged in parallel and spaced apart and mounted on the base (1), the crossbeam (92) is connected between the two upright posts (91), and the third loading mechanism (4) is slidably arranged on the crossbeam (92).

9. Cab tilt hydraulic cylinder swing test method, characterized in that: By implementing the cab flip hydraulic cylinder swing test device according to any one of claims 1 to 8, the cab flip hydraulic cylinder swing test method includes: S100: Rotate and install the two ends of the hydraulic cylinder (100) on the loading platform (5) and the base (1) respectively through a clamp; S200: Under the driving action of the first telescopic driving member (21), the second telescopic driving member (31), and the third telescopic driving 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 along with the loading platform (5); S300: Real-time monitoring of the swing data of the hydraulic cylinder (100) through the first sensor (22), the second sensor (32), and the third sensor (42).

10. The cab tilt hydraulic cylinder swing test method according to claim 9, characterized in that: The cab tilting hydraulic cylinder swing test device further comprises a servo valve (6), wherein the servo valve (6) is connected to the first telescopic drive member (21), the second telescopic drive member (31), and the third telescopic drive member (41) via a signal, and the servo valve (6) is used to control the opening or closing of the first telescopic drive member (21), the second telescopic drive member (31), and the third telescopic drive member (41); The cab tilt hydraulic cylinder swing test method further includes the following steps between S100 and S200: S110: The road spectrum collected by the actual vehicle is imported into the host computer, and a signal is sent to the servo valve (6) through the host computer, and the servo valve (6) controls the start and stop of the first telescopic drive member (21), the second telescopic drive member (31) and the third telescopic drive member (41).

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