CN111521390A - Transmission system testing method and system - Google Patents
Transmission system testing method and system Download PDFInfo
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- CN111521390A CN111521390A CN202010424903.8A CN202010424903A CN111521390A CN 111521390 A CN111521390 A CN 111521390A CN 202010424903 A CN202010424903 A CN 202010424903A CN 111521390 A CN111521390 A CN 111521390A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The embodiment of the invention provides a transmission system testing method and a transmission system testing system, which relate to the field of engineering machinery, the transmission system testing method is used for testing a transmission system, the transmission system comprises a coupler and a transmission part in transmission connection with the coupler, and the transmission system testing method comprises the following steps: obtain the first rotational speed of shaft coupling to and obtain the second rotational speed of driving medium. A first graph of a relationship between a first torsional angle of the coupling and the first rotational speed is generated as a function of the first rotational speed. And generating a second curve chart of the relation between the second torsional vibration angle and the second rotating speed of the transmission member according to the second rotating speed. A target graph is generated from the first graph and the second graph. And determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph. The data obtained by the transmission system testing method is more comprehensive, and the type selection of the coupler can be more accurate.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a transmission system testing method and system.
Background
The input shaft and the pump shaft of the engine of the excavator are generally in transmission connection through a coupler, and when the coupler is selected, the coupler is generally required to be tested so as to select a better coupler model. Generally, when the coupler is tested, only the coupler is tested, and the obtained data is incomplete, so that the model selection result of the coupler is influenced.
Disclosure of Invention
The object of the present invention includes, for example, providing a transmission system testing method and system which can effectively improve the above-mentioned technical problems.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment of the present invention provides a transmission system testing method, configured to test a transmission system, where the transmission system includes a coupler and a transmission part in transmission connection with the coupler, and the transmission system testing method includes:
acquiring a first rotating speed of the coupler and a second rotating speed of the transmission piece;
generating a first graph of a relationship between a first torsional angle of the coupling and the first rotating speed according to the first rotating speed; generating a second curve chart of the relation between a second torsional vibration angle of the transmission member and the second rotating speed according to the second rotating speed;
generating a target graph according to the first graph and the second graph; and determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph.
In an alternative embodiment, the transmission comprises a flywheel disc for driving connection with an input shaft of an engine, the coupling is for driving connection with the input shaft, the second torsional angle comprises a first sub-torsional angle, the second rotational speed comprises a first sub-rotational speed, and the second profile comprises a first sub-profile;
the step of obtaining a second rotational speed of the transmission comprises:
acquiring a first sub-rotating speed of the flywheel disc;
the step of generating a second graph of a relationship between a second torsional angle of the transmission and the second rotational speed according to the second rotational speed includes:
and generating the first sub-curve graph of the relation between the first sub-torsional vibration angle and the first sub-rotating speed of the flywheel disc according to the first sub-rotating speed.
In an optional embodiment, the transmission further comprises a transmission shaft for transmission connection with a pump, the transmission shaft is in transmission connection with the flywheel disc through the coupling, the second torsional vibration angle further comprises a second sub-torsional vibration angle, the second rotation speed further comprises a second sub-rotation speed, and the second graph further comprises a second sub-graph;
the step of obtaining a second rotational speed of the transmission further comprises:
acquiring a second sub-rotating speed of the transmission shaft;
the step of generating a second graph of a relationship between a second torsional angle of the transmission and the second rotational speed according to the second rotational speed further comprises:
and generating the second sub-curve graph of the relationship between the second sub-torsional vibration angle and the second sub-rotating speed of the transmission shaft according to the second sub-rotating speed.
In an alternative embodiment, the target torsional vibration angle is the torsional vibration angle excluding the corresponding resonance condition and other torsional vibration angles in the target graph excluding the corresponding maximum torsional vibration angle in the target graph;
the step of determining a target torsional vibration angle and a target rotation speed corresponding to the target torsional vibration angle according to the target graph comprises the following steps:
and according to the target curve graph, removing the torsional vibration angle corresponding to the resonance working condition, removing the corresponding maximum torsional vibration angle in the target curve graph, and determining the target rotating speed corresponding to the residual torsional vibration angle.
In an alternative embodiment, before the steps of obtaining a first rotational speed of the coupling and obtaining a second rotational speed of the transmission, the transmission system testing method further comprises:
controlling the excavator to be under a first working condition;
under the first working condition, the excavator is unloaded, and the rotating speed of an engine of the excavator is 850 revolutions per second or 1100 revolutions per second.
In an alternative embodiment, before the steps of obtaining a first rotational speed of the coupling and obtaining a second rotational speed of the transmission, the transmission system testing method further comprises:
controlling the excavator to be in a second working condition and lasting for 60 seconds under the second working condition;
under the second working condition, the load capacity of the excavator is half of the maximum allowable load capacity, the engine speed of the excavator is v, wherein v is not less than 850 revolutions per second and not more than 1850 revolutions per second, the actual torque of a front pump of the excavator is half of the maximum torque of the front pump, the actual torque of a rear pump of the excavator is half of the maximum torque of the rear pump, the pressures of the front pump and the rear pump are both 34.3MPa, and the front pump and the rear pump are both in an overflow state.
In an alternative embodiment, before the steps of obtaining a first rotational speed of the coupling and obtaining a second rotational speed of the transmission, the transmission system testing method further comprises:
controlling the excavator to be in a third working condition and lasting for 30 seconds under the third working condition;
under the third working condition, the load capacity of the excavator is the maximum allowable load capacity, the engine speed of the excavator is t, wherein t is not less than 850 revolutions per second and not more than 1850 revolutions per second, the actual torque of a front pump of the excavator is the maximum torque of the front pump, the actual torque of a rear pump of the excavator is the maximum torque of the rear pump, the pressures of the front pump and the rear pump are both 34.3MPa or 20MPa, and the front pump and the rear pump are both in an overflow state.
In a second aspect, an embodiment of the present invention provides a transmission system testing system, configured to test a transmission system, where the transmission system includes a coupling and a transmission part in transmission connection with the coupling, and includes a first sensor, a second sensor, and a controller, where the controller is in communication with the first sensor and the second sensor at the same time;
the first sensor is used for outputting a first signal representing a first rotating speed of the coupler, and the second sensor is used for outputting a second signal representing a second rotating speed of the transmission part;
the controller is configured to receive the first signal and the second signal, generate a first graph of a relationship between a first torsional angle of the coupling and the first rotational speed according to the first rotational speed, generate a second graph of a relationship between a second torsional angle of the transmission and the second rotational speed according to the second rotational speed, generate a target graph according to the first graph and the second graph, and determine a target torsional angle and a target rotational speed corresponding to the target torsional angle according to the target graph.
In an optional embodiment, the first sensor is a first laser sensor, the second sensor comprises a second laser sensor and a gear rotation speed sensor, the transmission part comprises a flywheel disc and a transmission shaft for transmission connection with the pump, the flywheel disc and the coupling are simultaneously used for transmission connection with an input shaft of the engine, and the transmission shaft and the input shaft are in transmission connection through the coupling;
the second laser sensor is used for detecting the rotating speed of the transmission shaft, and the gear rotating speed sensor is used for detecting the rotating speed of the flywheel disc.
In an alternative embodiment, the drivetrain test system further includes a mounting plate configured to be removably coupled to the flywheel housing, and the first sensor and the second laser sensor are mounted on the mounting plate at a spaced apart location.
The beneficial effects of the embodiment of the invention include, for example:
the embodiment of the invention provides a transmission system testing method, which comprises the steps of not only obtaining a first rotating speed of a coupler, but also obtaining a second rotating speed of a transmission part in transmission connection with the coupler, generating a first curve graph according to the first rotating speed, and generating a second curve graph according to the second rotating speed. And then generating a target curve graph according to the first curve graph and the second curve graph, and determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph. Therefore, the acquired data are more comprehensive, the vibration condition of the coupler is considered, the vibration transmission condition between the coupler and the transmission part is also considered, and the coupler can be more accurately selected.
The embodiment of the invention also provides a transmission system testing system which comprises a first sensor, a second sensor and a controller, wherein the first sensor is used for outputting a first signal for representing and detecting the first rotating speed of a coupler, the second sensor is used for outputting a second signal for representing and detecting the second rotating speed of a transmission part in transmission connection with the coupler, the controller is used for receiving the first signal and the second signal, generating a first curve graph according to the first rotating speed, generating a second curve graph according to the second rotating speed, then generating a target curve graph according to the first curve graph and the second curve graph, and determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph. Therefore, the acquired data are more comprehensive, the vibration condition of the coupler is considered, the vibration transmission condition between the coupler and the transmission part is also considered, and the coupler can be more accurately selected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method for testing a drive train according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for testing a powertrain system under a first operating condition according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for testing a powertrain system under a second operating condition, according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for testing a powertrain system under a third operating condition, provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of a test system for a drivetrain of an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a gear rotation speed sensor mounted on a flywheel housing according to an embodiment of the present invention;
FIG. 7 is an enlarged schematic view at A of FIG. 6;
FIG. 8 is a schematic structural diagram of a bracket mounted on a flywheel housing according to an embodiment of the present invention;
FIG. 9 is an enlarged schematic view at B of FIG. 8;
fig. 10 is a schematic structural diagram of a stent provided in an embodiment of the present invention.
Icon: 1-an engine; 2-a coupler; 3-a transmission part; 31-flywheel disc; 32-a drive shaft; 4-a pump; 5-flywheel housing; 51-a wiring hole; 6-a first sensor; 7-a second sensor; 71-a second laser sensor; 72-gear speed sensor; 8-a scaffold; 81-a first mounting nut; 82-second mounting nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, the present embodiment provides a method for testing a transmission system, which is used to test the transmission system, and the method for testing the transmission system is described by taking the transmission system of an excavator as an example in the present embodiment.
Referring to fig. 1, in the present embodiment, the method for testing a transmission system includes:
s301: a first rotational speed of the coupling 2 (shown in fig. 5) is obtained.
S302: a second rotational speed of the transmission 3 (shown in fig. 5) is detected.
S303: a first graph of the relationship between the first torsional angle of the coupling 2 and the first rotational speed is generated as a function of the first rotational speed.
S304: a second diagram of the relationship between the second torsional angle of the transmission element 3 and the second rotational speed is generated as a function of the second rotational speed.
S305: a target graph is generated from the first graph and the second graph.
S306: and determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph.
It is understood that, in the present embodiment, not only the first rotation speed of the coupling 2 but also the second rotation speed of the transmission member 3 drivingly connected to the coupling 2 is acquired, and the first graph is generated based on the first rotation speed, and the second graph is generated based on the second rotation speed, and then the target graph is generated based on the first graph and the second graph, and the target torsional angle and the target rotation speed corresponding to the target torsional angle are determined based on the target graph. Like this, the data of acquireing are more comprehensive, have not only considered the vibration condition of shaft coupling 2 itself, have still considered the vibration transmission condition between shaft coupling 2 and driving medium 3, can make the model selection of shaft coupling 2 more accurate.
It should be noted that, taking the test coupling 2 as an example, the first torsional vibration angle can be calculated through the first rotation speed, and after the first rotation speeds at different times are obtained, different torsional vibration angle values corresponding to different first rotation speeds can be obtained. The basic principle of the spindle test is described in detail in the related art, and the detailed description of the specific principle is omitted here.
It is understood that, in the present embodiment, the first graph is a relationship between the first rotation speed and the first torsional angle, and specifically, the first graph is a graph in an orthogonal coordinate system, and a numerical value on the horizontal axis represents the first rotation speed and a numerical value on the vertical axis represents the first torsional angle. Similarly, the second graph has a similar composition to the first graph and is not repeated here.
It should be noted that step S301 and step S302 may be performed simultaneously. Alternatively, it can be performed sequentially, for example: step S301 may be performed before step S302, or step S302 may be performed before step S301.
Correspondingly, step 303 is guaranteed to be just after step 301, and step 304 is guaranteed to be just after step 302.
Referring to fig. 1, in the present embodiment, the excavator includes an engine 1 (shown in fig. 5) and a pump 4 (shown in fig. 5), a transmission member 3 (shown in fig. 5) includes a flywheel disc 31 (shown in fig. 5) and a transmission shaft 32 (shown in fig. 5), the flywheel disc 31 and the coupling 2 are both in transmission connection with an input shaft of the engine 1, the transmission shaft 32 is in transmission connection with the pump 4, and the transmission shaft 32 is in transmission connection with the input shaft of the engine 1 through the coupling 2.
It can be understood that, when the pump 4 is started, the transmission shaft 32 rotates to drive the coupling 2 to rotate, so as to drive the input shaft of the engine 1 to rotate, the flywheel disc 31 rotates along with the rotation of the input shaft, and after the input shaft rotates, the engine 1 works normally.
In the present embodiment, it is considered that the vibration transmission between the transmission shaft 32 and the coupling 2 and the vibration transmission between the coupling 2 and the flywheel disc 31 both affect the type selection of the coupling 2. Therefore, in the present embodiment, the coupling 2, the propeller shaft 32, and the flywheel disk 31 are all tested. Specifically, in this embodiment, the second torsional vibration angle includes a first sub-torsional vibration angle and a second sub-torsional vibration angle, the second rotation speed includes a first sub-rotation speed and a second sub-rotation speed, and the second graph includes a first sub-graph and a second sub-graph. In the method for testing the torsional vibration angle of the transmission system, not only the first rotating speed of the coupler 2, but also the first sub-rotating speed of the flywheel disc 31 and the second sub-rotating speed of the transmission shaft 32 are obtained. Therefore, more complete data can be acquired, and later-stage selection of the coupler 2 can be better assisted.
Specifically, in the present embodiment, step S302 includes:
a first sub-rotational speed of the flywheel disc 31 is obtained, and a second sub-rotational speed of the transmission shaft 32 is obtained.
Correspondingly, in this embodiment, step S304 includes:
from the first subrotational speed, a first subgraph of the relationship between the first subtorsional vibration angle and the first subrotational speed of the flywheel disc 31 is generated.
From the second sub-rotational speed, a second sub-plot of the relationship between the second sub-torsional angle of the drive shaft 32 and the second sub-rotational speed is generated.
It is understood that step S305 includes:
and generating a target curve graph according to the first curve graph, the first sub-curve graph and the second sub-curve graph.
Therefore, influence factors of the first torsional vibration angle of the coupler 2, the first sub-torsional vibration angle of the flywheel disc 31 and the second sub-torsional vibration angle of the transmission shaft 32 can be comprehensively considered, and more complete test data can be obtained.
It should be noted that, in the embodiment, the target torsional vibration angle is the torsional vibration angle excluding the corresponding resonance condition and other torsional vibration angles in the target graph excluding the corresponding maximum torsional vibration angle in the target graph.
Correspondingly, step S306 includes:
and according to the target curve graph, removing the torsional vibration angle corresponding to the resonance working condition, removing the maximum torsional vibration angle corresponding to the target curve graph, and determining the target rotating speed corresponding to the residual torsional vibration angle.
It is understood that after the target rotation speed corresponding to the residual torsional vibration angle is determined, the rotation speed of the transmission shaft 32 and the input shaft of the engine 1 can be controlled to work within the range covered by the target rotation speed when the coupling 2 is actually used. Therefore, the condition of resonance or large vibration can be effectively avoided when the coupler 2, the transmission shaft 32 and the flywheel disc 31 work, and the safety performance can be effectively improved.
Referring to fig. 1 to 4, in the present embodiment, during the test, the excavator is usually controlled under a preset working condition to perform the test, so as to comprehensively consider different working conditions and select the optimal model of the coupling 2.
Therefore, in this embodiment, before step S301, the method for testing a transmission system further includes:
s300: and controlling the excavator to be in a preset working condition.
Specifically, the preset working conditions include a first working condition, a second working condition and a third working condition. Correspondingly, in the present embodiment, step S300 includes:
s307: and controlling the excavator to be in a first working condition.
In the present embodiment, in the first operating condition, the excavator is unloaded, and the rotation speed of the engine 1 of the excavator is 850 rpm or 1100 rpm.
Correspondingly, step S300 further includes:
s308: and controlling the excavator to be in the second working condition, and lasting for 60 seconds in the second condition.
In this embodiment, the pump 4 includes a front pump and a rear pump, which are respectively provided at the front end and the rear end of the excavator. Correspondingly, in this embodiment, there are two sets of transmission systems, wherein one set of transmission system includes a front pump, and the other set of transmission system includes a rear pump.
Under a second working condition, the load capacity of the excavator is half of the maximum allowable load capacity, the rotating speed of an engine 1 of the excavator is v, wherein v is not less than 850 revolutions per second and not more than 1850 revolutions per second, the actual torque of a front pump of the excavator is half of the maximum torque of the front pump, the actual torque of a rear pump of the excavator is half of the maximum torque of the rear pump, the pressures of the front pump and the rear pump are both 34.3MPa, and the front pump and the rear pump are both in an overflow state.
Correspondingly, step S300 further includes:
s309: and controlling the excavator to be in the third working condition and lasting for 30 seconds in the third working condition.
In the embodiment, under the third operating condition, the load capacity of the excavator is the maximum allowable load capacity, the rotation speed of the engine 1 of the excavator is t, wherein t is less than or equal to 850 revolutions per second and less than or equal to 1850 revolutions per second, the actual torque of the front pump of the excavator is the maximum torque of the front pump, the actual torque of the rear pump of the excavator is the maximum torque of the rear pump, the pressures of the front pump and the rear pump are both 34.3MPa or 20MPa, and both the front pump and the rear pump are in the overflow state.
It should be noted that, in this embodiment, after the test of the coupler 2 is completed, the target rotation speed may be set as a fixed value, the torque of the transmission shaft 32 is adjusted, the torque when the target torsional vibration angle is maximum is found, and then, the durability test is performed on the coupler 2 under different working conditions, so that the correctness of the type selection of the coupler 2 may be verified.
Referring to fig. 5, the present embodiment further provides a testing system of a transmission system, which can be used to implement the testing method of the transmission system. Specifically, the drive train testing system includes a first sensor 6, a second sensor 7, and a controller (not shown).
In the present embodiment, the first sensor 6 is capable of detecting a first rotational speed of the coupling 2 and outputting a first signal indicative of the first rotational speed. In the present embodiment, the first sensor 6 detects the first rotation speed of the coupling 2 using the first laser sensor.
In the present exemplary embodiment, the second sensor 7 is used to detect a second rotational speed of the transmission 3 and to output a second signal which is characteristic of the second rotational speed. In the present embodiment, the transmission member 3 comprises the flywheel disc 31 and the transmission shaft 32, and correspondingly, the second sensor 7 comprises a gear rotation speed sensor 72 and a second laser sensor 71, and the second signal comprises a first sub-signal and a second sub-signal. The gear speed sensor 72 is configured to detect a first sub-rotational speed of the flywheel disk 31 and is capable of outputting a first sub-signal indicative of the first sub-rotational speed. The second laser sensor 71 is configured to detect a second sub-rotational speed of the drive shaft 32 and is capable of outputting a second sub-signal indicative of the second sub-rotational speed.
In this embodiment, the controller is in communication with the first sensor 6, the gear rotation speed sensor 72 and the second laser sensor 71 at the same time, and the controller is configured to receive the first signal, the first sub-signal and the second sub-signal, and generate a first sub-graph of a relationship between the first torsional angle of the coupling 2 and the first rotation speed according to the first rotation speed, generate a first sub-graph of a relationship between the first sub-torsional angle of the flywheel disc 31 and the first sub-rotation speed according to the first sub-rotation speed, and generate a second sub-graph of a relationship between the second sub-torsional angle of the transmission shaft 32 and the second sub-rotation speed according to the second sub-rotation speed. The controller can then generate a target graph from the first graph, the first sub-graph, and the second sub-graph, and determine a target torsional angle and a target rotational speed corresponding to the target torsional angle from the target graph.
Referring to fig. 5-7, in the present embodiment, the gear rotation speed sensor 72 is disposed on the flywheel housing 5, and the flywheel disc 31 is disposed inside the flywheel housing 5, so that the flywheel housing 5 remains stationary during the rotation of the flywheel disc 31. In this way, the gear rotation speed sensor 72 provided on the flywheel housing 5 can better detect the first sub rotation speed of the flywheel disc 31 when the flywheel disc 31 rotates.
Referring to fig. 8-10 in conjunction with fig. 5, the transmission system torsional vibration detection system further includes a bracket 8, wherein the bracket 8 is detachably connected to the flywheel housing 5. The first sensor 6 and the second laser sensor 71 are arranged on the support 8 at intervals.
It will be appreciated that the bracket 8 may be mounted on the flywheel housing 5 when the test is being performed. After the test is finished, the bracket 8 can be detached from the flywheel housing 5, so that the normal operation of the transmission system is prevented from being influenced.
Specifically, in the present embodiment, the bracket 8 and the flywheel housing 5 are connected by a bolt or a screw, the bracket 8 is provided with a first mounting nut 81 and a second mounting nut 82, the first sensor 6 is mounted on the first mounting nut 81, and the second laser sensor 71 is mounted on the second mounting nut 82.
Referring to fig. 9, in the present embodiment, a cable hole 51 is formed in the flywheel housing 5, and the cable hole 51 is used for clamping a cable, so that different cables can pass through the flywheel housing 5 to be electrically connected with the first sensor 6 and the second laser sensor 71, respectively, and the first sensor 6 and the second laser sensor 71 can transmit signals to the controller through the cable.
In summary, in the transmission system testing method and system provided in this embodiment, during testing, the first rotation speed of the coupling 2, the first sub-rotation speed of the flywheel disc 31, and the second sub-rotation speed of the transmission shaft 32 are obtained, and according to the first rotation speed, a first curve graph representing a relationship between the first rotation speed and the first torsional vibration angle is generated, according to the first sub-rotation speed, a first sub-curve graph representing a relationship between the first sub-rotation speed and the first sub-torsional vibration angle is generated, and according to the second sub-rotation speed, a second sub-curve graph representing a relationship between the second sub-rotation speed and the second sub-torsional vibration angle is generated. And then generating a target curve graph according to the first curve graph, the first sub-curve graph and the second sub-curve graph, and determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph. Therefore, for the model selection of the coupler 2, the obtained data is more comprehensive, the vibration condition of the coupler 2 is considered, the vibration transmission condition between the coupler 2 and the flywheel disc 31 is also considered, and the vibration transmission condition between the coupler 2 and the transmission shaft 32 is also considered. Finally, the coupler 2 can be subjected to a durability test, and the correctness of the type selection of the coupler 2 is verified.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A transmission system testing method for testing a transmission system comprising a coupling (2) and a transmission member (3) in driving connection with the coupling (2), characterized in that the transmission system testing method comprises:
acquiring a first rotating speed of the coupler (2) and a second rotating speed of the transmission piece (3);
generating a first graph of a relationship between a first torsional vibration angle of the coupling (2) and the first rotating speed according to the first rotating speed; generating a second graph of the relationship between a second torsional angle of the transmission member (3) and the second rotating speed according to the second rotating speed;
generating a target graph according to the first graph and the second graph; and determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph.
2. A transmission system testing method according to claim 1, characterized in that the transmission (3) comprises a flywheel disc (31) for driving connection with an input shaft of an engine (1), the coupling (2) is for driving connection with the input shaft, the second torsional angle comprises a first sub-torsional angle, the second rotational speed comprises a first sub-rotational speed, the second diagram comprises a first sub-diagram;
the step of obtaining a second speed of rotation of the transmission member (3) comprises:
acquiring a first sub-rotating speed of the flywheel disc (31);
the step of generating a second graph of the relationship between a second torsional angle of the transmission (3) and the second rotational speed according to the second rotational speed comprises:
-generating said first sub-plot of the relation between said first sub-torsional vibration angle and said first sub-rotational speed of said flywheel disc (31) as a function of said first sub-rotational speed.
3. A drive system testing method according to claim 2, wherein the transmission (3) further comprises a transmission shaft (32) for driving connection with a pump (4), the transmission shaft (32) being in driving connection with the input shaft via the coupling (2), the second torsional angle further comprising a second sub-torsional angle, the second rotational speed further comprising a second sub-rotational speed, the second profile further comprising a second sub-profile;
the step of obtaining a second rotational speed of the transmission member (3) further comprises:
acquiring a second sub-rotation speed of the transmission shaft (32);
the step of generating a second graph of the relationship between a second torsional angle of the transmission (3) and the second rotational speed according to the second rotational speed further comprises:
generating the second sub-plot of the relationship between the second sub-torsional vibration angle of the drive shaft (32) and the second sub-rotational speed from the second sub-rotational speed.
4. A driveline testing method according to any of claims 1-3, wherein the target torsional vibration angle is the torsional vibration angle excluding the corresponding resonance regime and the other torsional vibration angles in the target profile excluding the corresponding maximum torsional vibration angle in the target profile;
the step of determining a target torsional vibration angle and a target rotation speed corresponding to the target torsional vibration angle according to the target graph comprises the following steps:
and according to the target curve graph, removing the torsional vibration angle corresponding to the resonance working condition, removing the corresponding maximum torsional vibration angle in the target curve graph, and determining the target rotating speed corresponding to the residual torsional vibration angle.
5. A driveline testing method according to any one of claims 1-3, wherein prior to the steps of obtaining a first rotational speed of the coupling (2) and obtaining a second rotational speed of the transmission (3), the driveline testing method further comprises:
controlling the excavator to be under a first working condition;
under the first working condition, the excavator is unloaded, and the rotating speed of an engine (1) of the excavator is 850 revolutions per second or 1100 revolutions per second.
6. A driveline testing method according to any one of claims 1-3, wherein prior to the steps of obtaining a first rotational speed of the coupling (2) and obtaining a second rotational speed of the transmission (3), the driveline testing method further comprises:
controlling the excavator to be in a second working condition and lasting for 60 seconds under the second working condition;
under the second working condition, the load capacity of the excavator is half of the maximum allowable load capacity, the rotating speed of an engine (1) of the excavator is v, wherein v is not less than 850 revolutions per second and not more than 1850 revolutions per second, the actual torque of a front pump of the excavator is half of the maximum torque of the front pump, the actual torque of a rear pump of the excavator is half of the maximum torque of the rear pump, the pressures of the front pump and the rear pump are both 34.3MPa, and the front pump and the rear pump are both in an overflow state.
7. A driveline testing method according to any one of claims 1-3, wherein prior to the steps of obtaining a first rotational speed of the coupling (2) and obtaining a second rotational speed of the transmission (3), the driveline testing method further comprises:
controlling the excavator to be in a third working condition and lasting for 30 seconds under the third working condition;
under the third working condition, the load capacity of the excavator is the maximum allowable load capacity, the rotating speed of an engine (1) of the excavator is t, wherein t is not less than 850 revolutions per second and not more than 1850 revolutions per second, the actual torque of a front pump of the excavator is the maximum torque of the front pump, the actual torque of a rear pump of the excavator is the maximum torque of the rear pump, the pressures of the front pump and the rear pump are both 34.3MPa or 20MPa, and the front pump and the rear pump are both in an overflow state.
8. A transmission system test system for testing a transmission system, the transmission system comprising a coupling (2) and a transmission (3) in driving connection with the coupling (2), characterized by comprising a first sensor (6), a second sensor (7) and a controller, the controller being in communication with both the first sensor (6) and the second sensor (7);
the first sensor (6) is used for outputting a first signal representing a first rotating speed of the coupling (2), and the second sensor (7) is used for outputting a second signal representing a second rotating speed of the transmission member (3);
the controller is used for receiving the first signal and the second signal, generating a first curve graph of the relation between a first torsional vibration angle of the coupler (2) and the first rotating speed according to the first rotating speed, generating a second curve graph of the relation between a second torsional vibration angle of the transmission piece (3) and the second rotating speed according to the second rotating speed, generating a target curve graph according to the first curve graph and the second curve graph, and determining a target torsional vibration angle and a target rotating speed corresponding to the target torsional vibration angle according to the target curve graph.
9. The drive train testing system according to claim 8, characterized in that the first sensor (6) is a first laser sensor, the second sensor (7) comprises a second laser sensor (71) and a gear speed sensor (72), the transmission (3) comprises a flywheel disc (31) and a transmission shaft (32) for transmission connection with a pump (4), the flywheel disc (31) and the coupling (2) are simultaneously used for transmission connection with an input shaft of an engine (1), and the transmission shaft (32) and the input shaft are in transmission connection through the coupling (2);
the second laser sensor (71) is used for detecting the rotating speed of the transmission shaft (32), and the gear rotating speed sensor (72) is used for detecting the rotating speed of the flywheel disc (31).
10. The driveline testing system of claim 9, further comprising a bracket (8) plate, the bracket (8) plate being adapted to be removably attached to a flywheel housing (5), the first sensor (6) and the second laser sensor (71) being mounted in spaced relation to the bracket (8) plate.
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