A method and system for testing the vibration characteristics of an engineering machine cab damper
By collecting vibration acceleration and displacement signals of the vibration damper in the cab of construction machinery, the vibration isolation rate, damping factor and impact attenuation factor are calculated, which solves the problem of single evaluation index in the existing technology, realizes a comprehensive evaluation of the vibration damper in the cab of construction machinery, and improves the comfort and health of the driver.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XCMG EXCAVATOR MACHINERY CO LTD
- Filing Date
- 2026-02-27
- Publication Date
- 2026-05-29
AI Technical Summary
The lack of a systematic method for testing the vibration characteristics of vibration dampers in the cabs of construction machinery in the current technology leads to the use of single evaluation indicators that are not applicable to the complex working conditions of construction machinery, thus affecting the comfort and health of the driver.
Vibration acceleration and displacement sensors are used to collect X, Y, and Z-axis vibration acceleration signals and Y-axis vibration displacement signals of the cab vibration damper. By calculating the vibration isolation rate, damping factor, and impact attenuation factor, the vibration isolation performance, damping characteristics, and impact attenuation characteristics of the cab vibration damper are comprehensively evaluated.
It provides a more comprehensive method for testing the vibration characteristics of cab shock absorbers, enabling more accurate evaluation of the quality of shock absorbers and improving driver comfort and health.
Smart Images
Figure CN122108560A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of engineering machinery testing technology, specifically relating to a method and system for testing the vibration characteristics of a vibration damper in the cab of engineering machinery. Background Technology
[0002] Construction machinery (such as excavators) is widely used in open-pit mines, large-scale infrastructure construction, and other applications. These machines operate in complex terrains and harsh environments. Shock absorbers are typically installed between the cab and the chassis to minimize vibrations and impacts generated during operation, providing a comfortable working environment for the driver. Poor shock absorption performance in the cab reduces operator comfort and can even negatively impact the driver's physical and mental health.
[0003] Currently, national standards do not cover vibration characteristic testing of vibration dampers in the cabs of construction machinery. Referring to the automotive industry, the vibration isolation rate of the vibration damper is used as an evaluation index. Although it can characterize the vibration isolation performance of the cab vibration damper, the evaluation index is singular, and the operating conditions of construction machinery and automobiles are different, so the evaluation index is also different. Summary of the Invention
[0004] Objective: In view of at least one of the above technical problems, this application provides a method and system for testing the vibration characteristics of a vibration damper in a construction machinery cab, aiming to supplement the depth of testing on the vibration damping characteristics of cab vibration dampers in the construction machinery industry.
[0005] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows:
[0006] Firstly, a method for testing the vibration characteristics of a vibration damper in the cab of engineering machinery is provided, including:
[0007] Under normal operating conditions, the vibration acceleration signals of the active and passive sides of the cab shock absorber in the X, Y and Z directions are obtained to obtain the effective values of the active and passive side vibration acceleration of the cab shock absorber for a complete cycle. The vibration isolation rate of the cab shock absorber is calculated based on the effective values of the active and passive side vibration acceleration of the cab shock absorber. The vibration isolation performance evaluation result of the cab shock absorber is obtained based on the vibration isolation rate of the cab shock absorber.
[0008] Under loading conditions, the Y-axis vibration displacement signal of the cab is obtained, thus obtaining the first peak value of the Y-axis vibration displacement of the cab and the second peak value of the Y-axis vibration displacement of the cab. The damping factor of the cab damper is calculated based on the first peak value of the Y-axis vibration displacement of the cab and the second peak value of the Y-axis vibration displacement of the cab. The damping characteristic evaluation result of the cab damper is obtained based on the damping factor of the cab damper.
[0009] The test was conducted under the working conditions of the cab, and the Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper were obtained. The peak-to-peak values of the Z-axis vibration acceleration of the active and passive sides of the cab vibration damper were obtained for the first time. The impact attenuation factor of the cab vibration damper was calculated based on the peak-to-peak values of the Z-axis vibration acceleration of the active and passive sides of the cab vibration damper for the first time. The impact attenuation characteristic evaluation result of the cab vibration damper was obtained based on the impact attenuation factor of the cab vibration damper.
[0010] Based on the evaluation results of the vibration isolation performance of the cab damper, the evaluation results of the damping characteristics of the cab damper, and the evaluation results of the impact attenuation characteristics of the cab damper, the vibration characteristic test results of the cab damper are obtained comprehensively.
[0011] In a second aspect, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method.
[0012] Thirdly, a controller is provided, including a processor and a storage medium;
[0013] The storage medium is used to store instructions;
[0014] The processor is configured to operate according to the instructions to execute the method.
[0015] Fourthly, a vibration characteristic testing system for a vibration damper in an engineering machinery cab is provided, including the aforementioned controller.
[0016] In some embodiments, the vibration characteristic testing system for the vibration damper of the engineering machinery cab further includes:
[0017] Vibration acceleration sensor 1 is used to collect vibration acceleration signals in the X, Y and Z directions of the active and passive sides of the vibration damper in the cab of construction machinery during normal working condition testing, and upload them to the controller.
[0018] A vibration displacement sensor is used to collect the Y-axis vibration displacement signal of the cab of the construction machinery during loading condition testing and upload it to the controller.
[0019] Vibration acceleration sensor 2 is used to collect the Z-axis vibration acceleration signals of the active and passive sides of the vibration damper in the cab of the construction machinery during the ground support test, and upload them to the controller.
[0020] The vibration characteristic testing system for the vibration damper of the engineering machinery cab described in this embodiment includes:
[0021] The standard operating condition testing system includes: a vibration acceleration sensor, a microcontroller, a serial communication module, and a running module.
[0022] The loading condition testing system includes: a vibration displacement sensor, a microcontroller, a serial communication module, and a running module.
[0023] The ground condition testing system includes: a vibration acceleration sensor, a microcontroller, a serial communication module, and an operation module.
[0024] Fifthly, an engineering machinery is provided, equipped with the aforementioned controller or the aforementioned engineering machinery cab vibration damper vibration characteristic testing system.
[0025] Compared with existing technologies, the beneficial effects achieved by this application are as follows: This invention proposes a method and system for testing the vibration characteristics of a vibration damper in a construction machinery cab, aiming to supplement the depth of testing regarding the vibration damping characteristics of cab vibration dampers in the construction machinery industry. Under normal operating conditions, a vibration acceleration sensor is used to collect the X, Y, and Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper, obtaining the effective values of the active and passive side vibration acceleration of the cab vibration damper for a complete cycle, thereby evaluating the vibration isolation performance of the damper. Under loaded operating conditions, a vibration displacement sensor is used to collect the Y-axis vibration displacement signal of the cab, obtaining the first peak value of the Y-axis vibration displacement, the second peak value of the Y-axis vibration displacement, the peak period of the vibration displacement, and the total decay period from the first peak value to zero. The damping characteristics of the damper are characterized and evaluated through the cab displacement characteristics. Under ground support operating conditions, a vibration acceleration sensor is used to collect the Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper, obtaining the peak-to-peak values of the first active and passive side vibration acceleration of the cab vibration damper, thereby evaluating the impact damping characteristics of the damper. Based on the test results of vibration isolation performance, damping characteristics and impact attenuation characteristics of the vibration damper for the cab of engineering machinery, the vibration characteristics of the cab vibration damper are comprehensively evaluated, thereby distinguishing the quality of the cab vibration damper. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the Y-axis vibration displacement signal of the driver's cab according to an embodiment of this application;
[0028] Figure 2 This is a schematic diagram of the Z-axis vibration acceleration signals of the active and passive sides of the driver's cab vibration damper according to an embodiment of this application;
[0029] Figure 3 This is a schematic diagram of a vibration characteristic testing system for a vibration damper in the cab of engineering machinery, according to an embodiment of this application.
[0030] Figure 4This is a schematic diagram of the operation process of the vibration characteristic testing system for the vibration damper of the cab of engineering machinery according to an embodiment of this application. Detailed Implementation
[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.
[0032] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0033] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.
[0035] To supplement the testing depth of vibration damping characteristics of cab vibration dampers in the construction machinery industry, this application provides a method and system for testing the vibration characteristics of cab vibration dampers in construction machinery. Under normal operating conditions, a vibration acceleration sensor is used to collect the X, Y, and Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper, obtaining the effective values of the active and passive side vibration acceleration of the cab vibration damper for a complete cycle, thereby evaluating the vibration isolation performance of the damper. Under loaded operating conditions, a vibration displacement sensor is used to collect the Y-axis vibration displacement signal of the cab, obtaining the first peak value of the Y-axis vibration displacement, the second peak value of the Y-axis vibration displacement, the peak period of the vibration displacement, and the total decay period from the first peak value to zero. The damping characteristics of the damper are characterized and evaluated through the cab displacement characteristics. Under ground support operating conditions, a vibration acceleration sensor is used to collect the Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper, obtaining the peak-to-peak values of the first active and passive side vibration acceleration of the cab vibration damper, thereby evaluating the impact damping characteristics of the damper. Based on the test results of vibration isolation performance, damping characteristics and impact attenuation characteristics of the vibration damper for the cab of engineering machinery, the vibration characteristics of the cab vibration damper are comprehensively evaluated, thereby distinguishing the quality of the cab vibration damper.
[0036] It should be noted that in this application, the direction of travel of the construction machinery is X-axis, the direction perpendicular to the ground is Z-axis, and the Y-axis is perpendicular to both X-axis and Z-axis.
[0037] Example 1: This application provides a vibration characteristic testing system for a vibration damper in an engineering machinery cab, including a controller. The controller includes a processor and a storage medium. The storage medium is used to store instructions. The processor is used to operate according to the instructions to execute the steps of the following method for testing the vibration characteristics of a vibration damper in an engineering machinery cab.
[0038] Furthermore, the vibration characteristic testing system for the vibration damper of the engineering machinery cab also includes:
[0039] Vibration acceleration sensor 1 is used to collect vibration acceleration signals in the X, Y and Z directions of the active and passive sides of the vibration damper in the cab of construction machinery during normal working condition testing, and upload them to the controller.
[0040] A vibration displacement sensor is used to collect the Y-axis vibration displacement signal of the cab of the construction machinery during loading condition testing and upload it to the controller.
[0041] Vibration acceleration sensor 2 is used to collect the Z-axis vibration acceleration signals of the active and passive sides of the vibration damper in the cab of the construction machinery during the ground support test, and upload them to the controller.
[0042] In this embodiment, the structural diagram of the vibration characteristic testing system for the vibration damper in the cab of engineering machinery is as follows: Figure 3 As shown in the figure, the operation flowchart of the vibration characteristic testing system for the vibration damper in the cab of construction machinery is as follows: Figure 4 As shown. The vibration characteristic testing system for the vibration damper of the engineering machinery cab includes a conventional working condition testing system 1, a loaded working condition testing system 2, a ground support working condition testing system 3, and a host computer 4 (i.e., controller).
[0043] The conventional working condition test system 1 includes: vibration acceleration sensor 11, microcontroller 12, serial communication module 13, and operation module 14;
[0044] Loading condition test system 2 includes: vibration displacement sensor 21, single microcontroller 22, serial communication module 23, and operation module 24;
[0045] The ground condition testing system 3 includes: vibration acceleration sensor 2 31, microcontroller 3 32, serial communication module 3 33, and operation module 3 34.
[0046] In the conventional working condition test system 1, 101 is the data communication line between the vibration acceleration sensor 1 and the microcontroller 1, 102 is the data communication line between the microcontroller 1 and the serial communication module 1, 103 is the data communication line between the serial communication module 1 and the operation module 1, and 104 is the electrical connection line between the operation module 1 and the host computer 4.
[0047] During routine operating condition testing, the construction machinery is placed on a level surface, started, and subjected to digging, leveling, and traveling actions to examine the vibration isolation performance of the shock absorbers. A vibration acceleration sensor is used to collect the X, Y, and Z-axis vibration acceleration signals of the active and passive sides of the vibration absorbers in the construction machinery cab. A microcontroller stores and outputs the digital signals from the vibration acceleration sensor. A runtime module is connected to the microcontroller via a serial communication module, enabling the microcontroller to perform tests and receive the X, Y, and Z-axis vibration acceleration signals from the active and passive sides of the vibration absorbers in the cab.
[0048] In the loading condition test system 2, 201 is the data communication line between the vibration displacement sensor and the microcontroller 2, 202 is the data communication line between the microcontroller 2 and the serial communication module 2, 203 is the data communication line between the serial communication module 2 and the operation module 2, and 204 is the electrical connection line between the operation module 2 and the host computer 4.
[0049] During the loading condition test, the construction machinery was placed on a horizontal surface with the engine off. The cab door was then quickly closed to examine the damping characteristics of the shock absorbers. A vibration displacement sensor was used to collect the Y-axis vibration displacement signal of the construction machinery cab. Microcontroller 2 stored and output the digital signal from the vibration displacement sensor. Operation module 2 was connected to microcontroller 2 via serial communication module 2, and the microcontroller 2 was used to perform the test and receive the Y-axis vibration displacement signal of the construction machinery cab.
[0050] In the ground condition testing system 3, 301 is the data communication line between the vibration acceleration sensor 2 and the microcontroller 3, 302 is the data communication line between the microcontroller 3 and the serial communication module 3, 303 is the data communication line between the serial communication module 3 and the operation module 3, and 304 is the electrical connection line between the operation module 3 and the host computer 4.
[0051] During the ground-supported working condition test, the construction machinery uses its boom to support the tracks at a certain angle. The machinery is then started, and the boom is rapidly raised to its highest power setting, causing the tracks to drop to the ground quickly. This allows the impact damping characteristics of the shock absorbers to be examined. Vibration acceleration sensor two is used to collect the Z-axis vibration acceleration signals of the active and passive sides of the vibration dampers in the construction machinery cab. Microcontroller three stores and outputs the digital signals from vibration acceleration sensor two. The operation module three is connected to microcontroller three via serial communication module three, enabling microcontroller three to perform the test and receive the Z-axis vibration acceleration signals of the active and passive sides of the vibration dampers in the construction machinery cab.
[0052] The host computer 4 controls the operation of operation module 1, operation module 2, and operation module 3 through electrical connection, and receives and processes the vibration acceleration and vibration displacement signals it collects.
[0053] Example 2: This application also provides a method for testing the vibration characteristics of a vibration damper in the cab of engineering machinery, including:
[0054] Under normal operating conditions, the vibration acceleration signals of the active and passive sides of the cab shock absorber in the X, Y and Z directions are obtained to obtain the effective values of the active and passive side vibration acceleration of the cab shock absorber for a complete cycle. The vibration isolation rate of the cab shock absorber is calculated based on the effective values of the active and passive side vibration acceleration of the cab shock absorber. The vibration isolation performance evaluation result of the cab shock absorber is obtained based on the vibration isolation rate of the cab shock absorber.
[0055] Under loading conditions, the Y-axis vibration displacement signal of the cab is obtained, thus obtaining the first peak value of the Y-axis vibration displacement of the cab and the second peak value of the Y-axis vibration displacement of the cab. The damping factor of the cab damper is calculated based on the first peak value of the Y-axis vibration displacement of the cab and the second peak value of the Y-axis vibration displacement of the cab. The damping characteristic evaluation result of the cab damper is obtained based on the damping factor of the cab damper.
[0056] The test was conducted under the working conditions of the cab, and the Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper were obtained. The peak-to-peak values of the Z-axis vibration acceleration of the active and passive sides of the cab vibration damper were obtained for the first time. The impact attenuation factor of the cab vibration damper was calculated based on the peak-to-peak values of the Z-axis vibration acceleration of the active and passive sides of the cab vibration damper for the first time. The impact attenuation characteristic evaluation result of the cab vibration damper was obtained based on the impact attenuation factor of the cab vibration damper.
[0057] Based on the evaluation results of the vibration isolation performance of the cab damper, the evaluation results of the damping characteristics of the cab damper, and the evaluation results of the impact attenuation characteristics of the cab damper, the vibration characteristic test results of the cab damper are obtained comprehensively.
[0058] In some embodiments, the vibration isolation rate of the cab damper is calculated based on the effective values of the active and passive vibration accelerations of the cab damper, and is expressed as follows:
[0059] ;
[0060] in, For the vibration isolation rate of the cab shock absorber, This represents the effective value of the vibration acceleration on the active side of the driver's cab shock absorber. This represents the effective value of the passive side vibration acceleration of the driver's cab shock absorber.
[0061] In some embodiments, the evaluation result of the vibration isolation performance of the cab damper is obtained based on the vibration isolation rate of the cab damper, including:
[0062] When the vibration isolation rate of the cab shock absorber The vibration isolation performance evaluation result of the cab shock absorber is poor, with an evaluation score of [score missing]. ;
[0063] when The vibration isolation performance of the cab shock absorber was rated as poor, with an evaluation score of [score missing]. ;
[0064] when The vibration isolation performance evaluation result of the cab shock absorber is average, with an evaluation score of [score missing]. ;
[0065] when The vibration isolation performance of the cab shock absorber was rated as good, with an evaluation score of [score missing]. ;
[0066] when The vibration isolation performance of the cab shock absorber was rated as good, with an evaluation score of [score missing]. ;
[0067] in, , , , These are the first, second, third, and fourth thresholds for vibration isolation performance, respectively.
[0068] It should be noted that, in this embodiment, The higher the score, the better the vibration isolation performance of the cab shock absorber.
[0069] In this embodiment, when the host computer processes the test data under normal operating conditions, it collects the X, Y, and Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper to obtain the effective values of the active and passive side vibration acceleration of the cab vibration damper for one complete cycle, and calculates the vibration isolation rate of the cab vibration damper to evaluate its vibration isolation performance. The vibration isolation rate of the cab vibration damper is used to evaluate the vibration isolation performance of the cab vibration damper, which is divided into five levels. The evaluation method is shown in Table 1.
[0070] Table 1 Evaluation Method for Vibration Isolation Performance of Cab Shock Absorbers
[0071]
[0072] In some embodiments, the damping factor of the cab damper is calculated based on the first peak value of the Y-direction vibration displacement of the cab and the second peak value of the Y-direction vibration displacement of the cab, and is expressed as follows:
[0073] ;
[0074] in, The damping factor of the cab shock absorber. This represents the peak value of the first Y-axis vibration displacement in the driver's cab. This represents the peak value of the second cab vibration displacement in the Y direction.
[0075] In some embodiments, the evaluation result of the damping characteristics of the cab damper is obtained based on the damping factor of the cab damper, including:
[0076] When the damping factor of the cab shock absorber The evaluation result for the damping characteristics of the cab shock absorber is poor, with an evaluation score of [score missing]. ;
[0077] when The damping characteristics of the cab shock absorber were rated as poor, with an evaluation score of [score missing]. ;
[0078] when The evaluation result of the damping characteristics of the cab shock absorber is "average", with an evaluation score of [score missing]. ;
[0079] when The damping characteristics of the cab shock absorber were rated as good, with an evaluation score of [score missing]. ;
[0080] when The damping characteristics of the cab shock absorber were rated as good, with an evaluation score of [score missing]. ;
[0081] in, , , , These are the first, second, third, and fourth thresholds for the damping factor of the cab shock absorber.
[0082] It should be noted that, in this embodiment, The higher the score, the better the damping characteristics of the cab shock absorber.
[0083] In this embodiment, when the host computer processes the test data under loading conditions, it collects the Y-axis vibration displacement signal of the cab to obtain the first peak value of the Y-axis vibration displacement of the cab. Peak value of Y-axis vibration displacement in the second cab The damping factor of the cab damper is calculated to evaluate its damping characteristics. A schematic diagram of the cab's Y-axis vibration displacement signal is shown below. Figure 1 As shown.
[0084] The damping characteristics of the cab damper were evaluated using the damping factor, which was divided into five levels. The evaluation method is shown in Table 2.
[0085] Table 2. First Evaluation Method for Damping Characteristics of Cab Shock Absorbers
[0086]
[0087] Furthermore, in some embodiments, the damping factor of the cab damper affects the peak value of the first cab Y-direction vibration displacement, the peak vibration displacement period, and the total attenuation period, as shown in Table 3, including:
[0088] When the first peak value of the Y-axis vibration displacement of the cab The displacement of the cab is small; when The displacement of the cab is relatively small; when The cab displacement is moderate; when The displacement of the driver's cab is relatively large; when The displacement of the driver's cab is large; among them, , , , These are the first, second, third, and fourth threshold values for the peak value of the Y-axis vibration displacement in the driver's cab during the first test.
[0089] When the peak period of vibration displacement The shock absorber has a hardness; when The shock absorber has a relatively hard stiffness; when The damper stiffness is moderate; when The damper has a relatively soft stiffness; when The damper's stiffness is soft; among them, , , , The threshold values for the peak period of vibration displacement are: first threshold, second threshold, third threshold, and fourth threshold.
[0090] When the total decay period The cab has a short stabilization cycle; when The cab stabilization cycle is relatively short; when The cab stabilization cycle is moderate; when The cab stabilization period is relatively long; when The cab has a long stabilization period; among them, , , , These are the first threshold, second threshold, third threshold, and fourth threshold for the total attenuation period, respectively.
[0091] In this embodiment, when the host computer processes the test data under loading conditions, it collects the Y-axis vibration displacement signal of the cab to obtain the first peak value of the Y-axis vibration displacement of the cab. Peak period of vibration displacement The total decay period of the vibration displacement from the first peak to zero. This is used to assist in verifying and evaluating the damping characteristics of the shock absorber. A schematic diagram of the Y-axis vibration displacement signal in the cab is shown below. Figure 1 As shown.
[0092] Therefore, the damping characteristics of the cab vibration damper can be evaluated by using the peak value of the first cab Y-direction vibration displacement, the peak period of the vibration displacement, and the total decay period as auxiliary verification. It is divided into five levels, and the evaluation method is shown in Table 3.
[0093] Table 3. Second Evaluation Method for Damping Characteristics of Cab Shock Absorbers
[0094]
[0095] In some embodiments, the impact attenuation factor of the cab damper is calculated based on the peak-to-peak values of the Z-axis vibration accelerations on the active and passive sides of the first cab damper, and is expressed as follows:
[0096] ;
[0097] in, The impact damping factor of the cab shock absorber. This represents the peak-to-peak value of the active lateral Z-axis vibration acceleration of the cab shock absorber for the first time. The value represents the peak-to-peak value of the passive side Z-axis vibration acceleration of the first cab shock absorber.
[0098] In some embodiments, the evaluation result of the impact attenuation characteristics of the cab shock absorber is obtained based on the impact attenuation factor of the cab shock absorber, including:
[0099] When the shock damper in the cab has an impact attenuation factor The evaluation result for the impact damping characteristics of the cab shock absorber is poor, with an evaluation score of [score missing]. ;
[0100] when The evaluation result for the impact damping characteristics of the cab shock absorber is poor, with an evaluation score of [score missing]. ;
[0101] when The evaluation result of the impact damping characteristics of the cab shock absorber is "average", with an evaluation score of [score missing]. ;
[0102] when The impact damping characteristics of the cab shock absorber were rated as good, with an evaluation score of [score missing]. ;
[0103] when The shock absorber's impact damping characteristics were rated as good, with an evaluation score of [score missing]. ;
[0104] in, , , , These are the first, second, third, and fourth thresholds of the impact attenuation factor for the cab shock absorber.
[0105] It should be noted that, in this embodiment, The higher the score, the better the impact damping characteristics of the cab shock absorber.
[0106] In this embodiment, when the host computer processes the test data for the ground support condition, it collects the Z-axis vibration acceleration signals of the active and passive sides of the driver's cab vibration damper, obtains the first peak-to-peak values of the Z-axis vibration acceleration of the active and passive sides of the driver's cab vibration damper, and calculates the impact attenuation factor of the driver's cab vibration damper to evaluate the impact attenuation characteristics of the damper. A schematic diagram of the Z-axis vibration acceleration signals of the active and passive sides of the driver's cab vibration damper is shown below. Figure 2 As shown in Table 4, the impact attenuation characteristics of the cab shock absorber are evaluated using the impact attenuation factor, which is divided into five levels.
[0107] Table 4 Evaluation Method for Impact Damping Characteristics of Cab Shock Absorbers
[0108]
[0109] In some embodiments, the vibration characteristic test results of the cab damper are obtained by comprehensively considering the evaluation results of the cab damper's vibration isolation performance, damping characteristics, and impact attenuation characteristics, including:
[0110] ;
[0111] in, The results of the vibration characteristic test of the cab shock absorber. , , These are the weighting coefficients for the evaluation results of the vibration isolation performance of the cab shock absorber, the damping characteristics of the cab shock absorber, and the impact attenuation characteristics of the cab shock absorber, respectively. .
[0112] It should be noted that in this embodiment, the evaluation results of the vibration isolation performance, damping characteristics, and impact attenuation characteristics of the cab shock absorber are expressed as evaluation scores. Similarly, the final result of the vibration characteristic test of the cab shock absorber is expressed as a score. The higher the score, the better the vibration characteristics of the cab shock absorber. Combined with the corresponding threshold, the quality of the cab shock absorber can be distinguished.
[0113] Example 3: This application provides a controller, including a processor and a storage medium;
[0114] The storage medium is used to store instructions;
[0115] The processor is configured to operate according to the instructions to execute the method.
[0116] Example 4: This application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method.
[0117] Example 5: This application provides an engineering machinery, which is equipped with the controller or the vibration characteristic testing system for the vibration damper of the engineering machinery cab.
[0118] In this embodiment, the construction machinery is taken as an example of an excavator.
[0119] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0120] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0121] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0122] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0123] The above description is only a preferred embodiment of this application. It should be noted that those skilled in the art should understand that various changes and improvements may be made to this application without departing from the principles and spirit. These improvements should also be considered within the scope of protection of this application and are not limited to the above embodiments.
Claims
1. A method for testing the vibration characteristics of a vibration damper in the cab of engineering machinery, characterized in that, include: Under normal operating conditions, the vibration acceleration signals of the active and passive sides of the cab shock absorber in the X, Y and Z directions are obtained to obtain the effective values of the active and passive side vibration acceleration of the cab shock absorber for a complete cycle. The vibration isolation rate of the cab shock absorber is calculated based on the effective values of the active and passive side vibration acceleration of the cab shock absorber. The vibration isolation performance evaluation result of the cab shock absorber is obtained based on the vibration isolation rate of the cab shock absorber. Under loading conditions, the Y-axis vibration displacement signal of the cab is obtained, thus obtaining the first peak value of the Y-axis vibration displacement of the cab and the second peak value of the Y-axis vibration displacement of the cab. The damping factor of the cab damper is calculated based on the first peak value of the Y-axis vibration displacement of the cab and the second peak value of the Y-axis vibration displacement of the cab. The damping characteristic evaluation result of the cab damper is obtained based on the damping factor of the cab damper. The test was conducted under the working conditions of the cab, and the Z-axis vibration acceleration signals of the active and passive sides of the cab vibration damper were obtained. The peak-to-peak values of the Z-axis vibration acceleration of the active and passive sides of the cab vibration damper were obtained for the first time. The impact attenuation factor of the cab vibration damper was calculated based on the peak-to-peak values of the Z-axis vibration acceleration of the active and passive sides of the cab vibration damper for the first time. The impact attenuation characteristic evaluation result of the cab vibration damper was obtained based on the impact attenuation factor of the cab vibration damper. Based on the evaluation results of the vibration isolation performance of the cab damper, the evaluation results of the damping characteristics of the cab damper, and the evaluation results of the impact attenuation characteristics of the cab damper, the vibration characteristic test results of the cab damper are obtained comprehensively.
2. The method for testing the vibration characteristics of the vibration damper in the cab of engineering machinery according to claim 1, characterized in that, The vibration isolation rate of the cab damper is calculated based on the effective values of the active and passive vibration accelerations of the cab damper, and is expressed as follows: ； in, For the vibration isolation rate of the cab shock absorber, This represents the effective value of the vibration acceleration on the active side of the driver's cab shock absorber. This represents the effective value of the passive side vibration acceleration of the driver's cab shock absorber.
3. The method for testing the vibration characteristics of a vibration damper in the cab of engineering machinery according to claim 1 or 2, characterized in that, The evaluation results of the vibration isolation performance of the cab damper are obtained based on the vibration isolation rate of the cab damper, including: When the vibration isolation rate of the cab shock absorber The vibration isolation performance evaluation result of the cab vibration damper is: ; when The vibration isolation performance evaluation result of the cab vibration damper is: ; when The vibration isolation performance evaluation result of the cab vibration damper is: ; when The vibration isolation performance evaluation result of the cab vibration damper is: ; when The vibration isolation performance evaluation result of the cab vibration damper is: ; in, , , , These are the first, second, third, and fourth thresholds for vibration isolation performance, respectively.
4. The method for testing the vibration characteristics of the vibration damper in the cab of engineering machinery according to claim 1, characterized in that, The damping factor of the cab damper is calculated based on the peak value of the first and second Y-direction vibration displacements of the cab, and is expressed as follows: ； in, The damping factor of the cab shock absorber. This represents the peak value of the first Y-axis vibration displacement in the driver's cab. This represents the peak value of the second cab vibration displacement in the Y direction.
5. The method for testing the vibration characteristics of a vibration damper in the cab of engineering machinery according to claim 1, characterized in that, The evaluation results of the damping characteristics of the cab damper are obtained based on the damping factor of the cab damper, including: When the damping factor of the cab shock absorber The evaluation results of the damping characteristics of the cab shock absorber are as follows: ; when The evaluation results of the damping characteristics of the cab shock absorber are as follows: ; when The evaluation results of the damping characteristics of the cab shock absorber are as follows: ; when The evaluation results of the damping characteristics of the cab shock absorber are as follows: ; when The evaluation results of the damping characteristics of the cab shock absorber are as follows: ; in, , , , These are the first, second, third, and fourth thresholds for the damping factor of the cab shock absorber.
6. The vibration characteristic testing system for the vibration damper of the engineering machinery cab according to claim 1, characterized in that, The impact attenuation factor of the cab shock absorber is calculated based on the peak-to-peak values of the Z-axis vibration acceleration on the active and passive sides of the first test, and is expressed as follows: ； in, The impact damping factor of the cab shock absorber. This represents the peak-to-peak value of the active lateral Z-axis vibration acceleration of the cab shock absorber for the first time. The value represents the peak-to-peak value of the passive side Z-axis vibration acceleration of the first cab shock absorber.
7. The method for testing the vibration characteristics of a vibration damper in the cab of engineering machinery according to claim 1, characterized in that, The evaluation results of the impact attenuation characteristics of the cab shock absorber are obtained based on the impact attenuation factor, including: When the shock damper in the cab has an impact attenuation factor The evaluation results of the shock absorber's impact attenuation characteristics are as follows: ; when The evaluation results of the impact damping characteristics of the cab shock absorber are as follows: ; when The evaluation results of the impact damping characteristics of the cab shock absorber are as follows: ; when The evaluation results of the impact damping characteristics of the cab shock absorber are as follows: ; when The evaluation results of the impact damping characteristics of the cab shock absorber are as follows: ; in, , , , These are the first, second, third, and fourth thresholds for the impact attenuation factor.
8. The method for testing the vibration characteristics of a vibration damper in the cab of engineering machinery according to claim 1, characterized in that, Based on the evaluation results of the vibration isolation performance, damping characteristics, and impact attenuation characteristics of the cab vibration damper, the comprehensive vibration characteristic test results of the cab vibration damper are obtained, including: ； in, The results of the vibration characteristic test of the cab shock absorber. , , These are the weighting coefficients for the evaluation results of the vibration isolation performance of the cab shock absorber, the damping characteristics of the cab shock absorber, and the impact attenuation characteristics of the cab shock absorber, respectively. .
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method according to any one of claims 1 to 8.
10. A controller, characterized in that, Including processor and storage media; The storage medium is used to store instructions; The processor is configured to operate according to the instructions to perform the method according to any one of claims 1 to 8.
11. A vibration characteristic testing system for a vibration damper in the cab of engineering machinery, characterized in that, Including the controller of claim 10, further comprising: Vibration acceleration sensor 1 is used to collect vibration acceleration signals in the X, Y and Z directions of the active and passive sides of the vibration damper in the cab of construction machinery during normal working condition testing, and upload them to the controller. A vibration displacement sensor is used to collect the Y-axis vibration displacement signal of the cab of the construction machinery during loading condition testing and upload it to the controller. Vibration acceleration sensor 2 is used to collect the Z-axis vibration acceleration signals of the active and passive sides of the vibration damper in the cab of the construction machinery during the ground support test, and upload them to the controller.
12. An engineering machinery, characterized in that, It is equipped with the controller as described in claim 10 or the vibration characteristic testing system for the vibration damper of the engineering machinery cab as described in claim 11.