CN117232867A - Automatic execution device and method for lifting test of dump truck - Google Patents
Automatic execution device and method for lifting test of dump truck Download PDFInfo
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- CN117232867A CN117232867A CN202311244288.2A CN202311244288A CN117232867A CN 117232867 A CN117232867 A CN 117232867A CN 202311244288 A CN202311244288 A CN 202311244288A CN 117232867 A CN117232867 A CN 117232867A
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Abstract
The application relates to the technical field of dumper test devices, in particular to an automatic execution device and method for a dumper lifting test, wherein the automatic execution device comprises a lifting test controller, an upper loading controller BBM electrically connected with the lifting test controller, a hydraulic system flow sensor, a manual valve operating device, a hydraulic system pressure sensor, a lifting angle sensor and a side-tipping angle sensor; the application can realize the automatic execution of the dump truck lifting test, replaces people to carry out heavy work, and obtains more accurate results; the method can measure and store various data and make charts, and can provide more analysis data for technicians.
Description
Technical Field
The application relates to the technical field of dumper test devices, in particular to an automatic execution device for dumper lifting tests.
Background
The 'QC/T222-2010 general technical condition of dumper' is that the new train type trial production of dumper is completed must do the project, including:
3.19 Under the working conditions of rated load and mass of 110%, the carriage is lifted by 10 degrees and 20 degrees respectively and stays for 5 minutes, and the self-lowering amount of the carriage is not more than 2.5 degrees.
3.23 The dump reliability test of continuous lifting (lifting to half of the maximum lifting angle, if exceeding 30 degrees, lifting to 30 degrees) and descending (not unloading and not moving) of the dumper hydraulic system 3000 times under rated load is carried out, and the following requirements are met after the test:
a) Any damage to the parts of the hydraulic tipping device (except for the vulnerable parts) cannot occur;
b) The self-lowering quantity of the carriage meets the regulation of 3.19.
3.24, prescribing the time for empty lifting to the maximum angle.
3.25, prescribing the time from the maximum angle to the fitting of the frame.
In the prior art, special persons are required to be arranged to manually operate the vehicle when doing the items, and the data collection and recording are required during the operation due to complex operation and multiple lifting times, and the new vehicle model often requires that operators pay special attention to the state of the whole vehicle, such as engine oil temperature, rotating speed and the like; a test can be completed in more than ten days or even tens of days, which is a huge physical and mental test for operators; and the phenomenon that the manual operation is unavoidably wrong, and the operation is not in place and the data is omitted occurs.
Disclosure of Invention
The application mainly aims to provide an automatic execution device and method for a dump truck lifting test, which are used for solving the problem of how to easily and accurately complete the dump truck lifting test in the prior art.
In order to achieve the aim, the application provides an automatic execution device for a dump truck lifting test, which comprises a lifting test controller, a top-loading controller BBM electrically connected with the lifting test controller, a hydraulic system flow sensor, a manual valve operating device, a hydraulic system pressure sensor, a lifting angle sensor and a side-tipping angle sensor, wherein the manual valve operating device comprises a power assembly, an angle encoder is connected to an output shaft of the power assembly, the angle encoder is electrically connected with the lifting test controller, an output shaft of the power assembly is connected with one end of a connecting rod, the other end of the connecting rod is connected with a connecting device, the connecting device is connected with a manual valve handle, and the power assembly can control the lifting of the dump truck by controlling the angle of the manual valve handle.
Further, the connecting device comprises an upper cover and a base positioned below the upper cover, the upper cover is fixedly connected with a guide rod, the base is in sliding connection with the guide rod, the upper cover is fixedly connected with a spring which enables the base to move upwards, the upper cover is fixedly connected with the connecting rod, the base is provided with a yielding port for a hand control valve handle to pass through, and a clamping space for clamping the top of the hand control valve handle is arranged between the upper cover and the base; the manual valve is in a locking state under a normal state, and the base can lift the handle of the manual valve upwards in the working process to unlock the manual valve.
Further, the device also comprises an operation interface and an audible and visual alarm which are electrically connected with the lifting test controller.
Further, the device also comprises a data interface electrically connected with the lifting test controller, and the data interface can transmit and print test data and reports to external equipment.
The application also provides a method for testing by using the automatic execution device for the lifting test of the dump truck, which is characterized by comprising the following steps:
s1, inputting a plurality of programs into a lifting test controller;
s2, adding the rated load mass into the carriage, starting a corresponding program, and controlling the carriage to continuously lift and descend for 3000 times by a lifting test controller, wherein the lifting angle is the same each time, if half of the maximum lifting angle is more than or equal to 30 degrees, the lifting angle is 30 degrees each time, and if half of the maximum lifting angle is less than 30 degrees, the lifting angle is half of the maximum lifting angle each time; after the continuous lifting and the descending are finished, checking whether the parts of the hydraulic tilting device are damaged or not and recording; then, the quality of 110% of rated load is achieved in the carriage, a corresponding program is started, the lifting test controller controls the carriage to be lifted to 10 degrees and 20 degrees respectively and to stay for 5 minutes respectively, the process is repeated for a plurality of times, and the self-lowering quantity of the carriage is calculated and stored each time according to data measured by a lifting angle sensor;
s3, enabling the vehicle box to be in an empty load state, starting a corresponding program, controlling the vehicle box to lift to a maximum lifting angle by the lifting test controller, descending to be attached to the vehicle frame, repeating for a plurality of times, calculating the lifting time and descending time of each time of the vehicle box according to data measured by the lifting angle sensor, and storing the lifting time and the descending time.
Further, in the process of lifting the carriage each time, the lifting angle sensor and the loading controller BBM transmit measurement results to the lifting test controller, and the lifting test controller draws and stores a lifting time-engine average rotating speed graph.
Furthermore, in the process of lifting the carriage each time, the lifting angle sensor and the hydraulic system pressure sensor transmit measurement results to the lifting test controller, and the lifting test controller draws and stores a lifting angle-hydraulic system pressure curve graph.
Further, in the process of each descending of the carriage, the lifting angle sensor and the angle encoder transmit measurement results to the lifting test controller, and the lifting test controller draws and stores a descending time-manual valve angle graph.
Further, the hydraulic system flow sensor and the loading controller BBM transmit the measurement result to the lifting test controller, and the loading controller BBM draws and stores a hydraulic pump output flow-engine rotating speed graph.
Further, setting data ranges of the engine rotating speed, the oil temperature, the output flow of the hydraulic pump, the pressure and the side tilting angle in the lifting test controller, detecting the engine rotating speed and the oil temperature by the upper-mounted controller BBM, and transmitting detected data to the lifting test controller in real time; the hydraulic system flow sensor, the hydraulic system pressure sensor, the lifting angle sensor and the side-tipping angle sensor transmit measured data to the lifting test controller in real time; when the measured data exceeds the set data range, the lifting test controller controls the audible and visual alarm to give an alarm and stop the test.
According to the device, through the arrangement of the manual valve operating device, the lifting test controller and the various data measuring devices, the automatic operation of the lifting test of the dump truck can be realized, the heavy work is performed instead of a person, and the obtained result is more accurate; the method can measure and store various data and make charts, and can provide more analysis data for technicians.
The method provided by the application can be used for obtaining the measurement results of the items specified in QC/T222-2010 dumper general technical condition and QC/T223-2010 dumper test method, and can also be used for obtaining a lifting time-engine average rotating speed curve, a stored lifting angle-hydraulic system pressure curve, a falling time-manual valve angle curve and a pump output flow-engine rotating speed curve, so that more analysis data are provided for the dumper performance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic view of an embodiment of an automatic execution device for a lifting test of a dump truck;
FIG. 2 is a schematic view of the structure of the manual valve operation device in the embodiment;
FIG. 3 is a cross-sectional view of B-B in FIG. 2;
FIG. 4 is a schematic diagram showing the relationship between the movable range of the manual valve and the lifting and falling of the dump truck in the embodiment;
FIG. 5 is a graph of lift time versus engine average speed for an example;
FIG. 6 is a lift angle versus hydraulic system pressure graph in an embodiment;
FIG. 7 is a graph of hydraulic pump output flow versus engine speed in an embodiment;
FIG. 8 is a plot of drop time versus manual valve angle in an example;
in the figure: 1. lifting the test controller; 2. loading a controller BBM; 3. a hydraulic system flow sensor; 4. manual valve operating means; 41. a power assembly; 42. a connecting rod; 43. a connecting device; 431. an upper cover; 432. a base; 433. a guide rod; 434. a spring; 435. a yielding port; 5. a hydraulic system pressure sensor; 6. a lifting angle sensor; 7. a roll angle sensor; 8. an angle encoder; 9. and (5) an operation interface.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Embodiment of automatic execution device for lifting test of dump truck
As shown in fig. 1 to 4, according to an embodiment of the present application, there is provided an automatic execution device for a lifting test of a dump truck, comprising a lifting test controller 1, a top-loading controller BBM2 electrically connected with the lifting test controller 1, a hydraulic system flow sensor 3, a manual valve operating device 4, a hydraulic system pressure sensor 5, a lifting angle sensor 6, a roll angle sensor 7, an operating interface 9, an audible and visual alarm, and a data interface; the hydraulic system flow sensor 3 and the hydraulic system pressure sensor 5 are arranged at an oil outlet of the lifting hydraulic pump, the manual valve operating device 4 is arranged at one side of the manual valve, the lifting angle sensor 6 is arranged at the bottom surface of the carriage, the side-tipping angle sensor 7 is arranged at the side surface of the carriage, the side-tipping angle sensor 7 detects the inclination angle of the carriage, the vehicle is prevented from turning over during lifting, and the operating interface 9 and the audible-visual annunciator are arranged at the side surface of the cab; the data interface is arranged on the operation interface, and can transmit and print test data and reports to external equipment.
The manual valve operating device 4 comprises a power assembly 41, the power assembly 41 is arranged on one side of the manual valve through a bracket, an output shaft of the power assembly 41 is connected with an angle encoder 8, the angle encoder 8 is electrically connected with the lifting test controller 1, an output shaft of the power assembly 41 is connected with one end of a connecting rod 42, the other end of the connecting rod 42 is connected with a connecting device 43, the connecting device 43 is connected with a handle of the manual valve, and the power assembly 41 can control the lifting of the dump truck by controlling the angle of the handle of the manual valve.
The connecting device 43 comprises an upper cover 431 and a base 432 positioned below the upper cover 431, wherein a guide rod 433 is fixedly connected to the upper cover 431, the base 432 is in sliding connection with the guide rod 433, a spring 434 which enables the base 432 to move upwards is fixedly connected to the upper cover 431, the upper cover 431 is fixedly connected with the connecting rod 42, a yielding port 435 for a hand control valve handle to pass through is formed in the base 432, and a clamping space for clamping the top of the hand control valve handle is formed between the upper cover 431 and the base 432; the manual valve is in a locked state under normal conditions, and in the working process, the base 432 can lift the handle of the manual valve upwards to unlock the manual valve.
Embodiment of automatic execution method for lifting test of dump truck
As shown in fig. 5 to 8, a method for performing a test using an embodiment of a dump truck lifting test automatic execution device is characterized by comprising the following steps:
s1, inputting a plurality of programs into a lifting test controller; setting data ranges of engine rotating speed, oil temperature, hydraulic pump output flow, pressure and side-tipping angle in the lifting test controller 1;
s2, adding the rated load mass into the carriage, starting a corresponding program, and controlling the carriage to continuously lift and descend for 3000 times by the lifting test controller 1, wherein the lifting angles are the same each time, if half of the maximum lifting angle is more than or equal to 30 degrees, the lifting angles are 30 degrees each time, and if half of the maximum lifting angle is less than 30 degrees, the lifting angles are half of the maximum lifting angle each time; after the continuous lifting and the descending are finished, checking whether the parts of the hydraulic tilting device are damaged or not and recording; then, the quality of 110% of rated load is achieved in the carriage, a corresponding program is started, the lifting test controller 1 controls the carriage to be lifted to 10 degrees and 20 degrees respectively and to stay for 5 minutes respectively, the operation is repeated for 5 times, and the self-lowering quantity of the carriage is calculated and stored each time according to the data measured by the lifting angle sensor 6;
s3, enabling the carriage to be in an empty load state, starting a corresponding program, controlling the carriage to lift to a maximum lifting angle by the lifting test controller 1, descending to be attached to the carriage, repeating 10 times, calculating the lifting time and the descending time of each time of the carriage according to data measured by the lifting angle sensor 6, and storing the lifting time and the descending time;
in the lifting and descending process of each time, the loading controller BBM2 detects the rotation speed and the oil temperature of the engine and transmits detection data to the lifting test controller 1 in real time; the hydraulic system flow sensor 3, the hydraulic system pressure sensor 5, the lifting angle sensor 6 and the side-tipping angle sensor 7 transmit measured data to the lifting test controller 1 in real time; when the measured data exceeds the set data range, the lifting test controller 1 controls the audible and visual alarm to give an alarm and stops testing;
the lifting test controller 1 draws and stores a lifting time-engine average rotating speed curve chart, a lifting angle-hydraulic system pressure curve chart, a falling time-manual valve angle curve chart and a hydraulic pump output flow-engine rotating speed curve chart according to the measured data.
1. Meaning of lift time-engine average speed graph
Theoretically, the faster the engine speed, the shorter the lift time, but not the purely proportional relationship. The true relation curve of the two is found, so that the best economic interval which is in consideration of the minimum lifting time and the lowest engine rotating speed within the allowable range of the national standard is favorable.
2. Meaning of lifting angle-hydraulic system pressure curve graph
With the change of lifting angle and the action of the manual valve (the manual valve is opened when lifting is started and closed when lifting is finished), the system pressure can be greatly fluctuated. This fluctuation may damage the sealing element, damage the oil pump, etc., and is very damaging to the hydraulic system. Drawing the law of real fluctuation has guiding effect on the improvement of the hydraulic system: if the structure of the manual control valve is improved, the lifting speed is changed, the system pressure is stable, and the system stability is further improved.
3. Meaning of drop time-manual valve angle graph
When the container is dropped, the dropping speed is in proportion to the operating angle of the manual control valve. That is, the greater the angle of the manual valve, the faster the drop rate. And precisely drawing the curve, and improving the structure of the manual valve to guide the structure.
4. Pump output flow-engine speed graph
In theory, the faster the engine speed is, the larger the flow of the hydraulic pump is, and the relation between the two is not in a fixed proportion. And a true relation curve is drawn, so that the most reasonable and economical engine rotating speed of the output flow of the oil pump is determined, and the structural improvement of the hydraulic pump is guided.
The dump truck lifting test is performed by using the embodiment, so that time is saved compared with manual operation, and the obtained data is more accurate; and more analysis data can be obtained, so that more analysis data can be provided for the performance of the dumper.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a dumper lifts experimental automatic execution device, its characterized in that, including lifting experimental controller (1) and with lifting experimental controller (1) electrically connected's upper mounting controller BBM (2), hydraulic system flow sensor (3), manual valve operating means (4), hydraulic system pressure sensor (5), lift angle sensor (6), roll angle sensor (7), manual valve operating means (4) include power assembly (41), be connected with angle encoder (8) on the output shaft of power assembly (41), angle encoder (8) are connected with lifting experimental controller (1) electricity, the output shaft of power assembly (41) has one end of connecting rod (42), connecting device (43) are connected to the other end of connecting rod (42), connecting device (43) are connected with the manual valve handle, power assembly (41) can be through the lift of the control dumper of control valve handle angle.
2. The automatic execution device for the lifting test of the dump truck according to claim 1, wherein the connecting device (43) comprises an upper cover (431) and a base (432) positioned below the upper cover (431), the upper cover (431) is fixedly connected with a guide rod (433), the base (432) is slidably connected with the guide rod (433), the upper cover (431) is fixedly connected with a spring (434) for enabling the base (432) to move upwards, the upper cover (431) is fixedly connected with the connecting rod (42), the base (432) is provided with a yielding port (435) for a manual valve handle to pass through, and a clamping space for clamping the top of the manual valve handle is formed between the upper cover (431) and the base (432).
3. The automatic execution device for the lifting test of the dump truck according to claim 1, further comprising an operation interface (9) and an audible and visual alarm which are electrically connected with the lifting test controller.
4. The automatic lifting test execution device of the dump truck according to claim 1, further comprising a data interface electrically connected with the lifting test controller, wherein the data interface can transmit and print test data and reports to external equipment.
5. A method of testing using the automated test equipment for lifting a dump truck of claim 1, comprising the steps of:
s1, inputting a plurality of programs into a lifting test controller (1);
s2, adding the rated load mass into the carriage, starting a corresponding program, and controlling the carriage to continuously lift and descend for 3000 times by a lifting test controller (1), wherein the lifting angles are the same each time, if half of the maximum lifting angle is greater than or equal to 30 degrees, the lifting angles are 30 degrees each time, and if half of the maximum lifting angle is less than 30 degrees, the lifting angles are half of the maximum lifting angle each time; after the continuous lifting and the descending are finished, checking whether the parts of the hydraulic tilting device are damaged or not and recording; then, the quality of 110% of rated load is achieved in the carriage, a corresponding program is started, the lifting test controller (1) controls the carriage to be lifted to 10 degrees and 20 degrees respectively and to stay for 5 minutes respectively, the process is repeated for a plurality of times, and the self-lowering quantity of the carriage is calculated and stored each time according to the data measured by the lifting angle sensor (6);
s3, enabling the carriage to be in an empty load state, starting a corresponding program, controlling the carriage to lift to a maximum lifting angle by the lifting test controller (1) and to descend to be attached to the carriage, repeating the operation for a plurality of times, calculating the lifting time and the descending time of the carriage each time according to data measured by the lifting angle sensor (6), and storing the lifting time and the descending time.
6. The method according to claim 5, wherein the lifting angle sensor (6) and the loading controller BBM (2) transmit the measurement results to the lifting test controller (1) during each lifting process of the carriage, and the lifting test controller (1) draws and stores a lifting time-engine average rotating speed graph.
7. The method according to claim 5, characterized in that the lifting angle sensor (6) and the hydraulic system pressure sensor (5) transmit the measurement results to the lifting test controller (1) during each lifting of the carriage, and the lifting test controller (1) draws and stores a lifting angle-hydraulic system pressure graph.
8. The method according to claim 5, characterized in that the lifting angle sensor (6) and the angle encoder (8) transmit the measurement results to the lifting test controller (1) during each descent of the carriage, and the lifting test controller (1) draws and stores a landing time-manual valve angle graph.
9. The method according to claim 5, characterized in that the hydraulic system flow sensor (3), the on-board controller BBM (2) transmit the measurement results to the lift test controller (1), and the on-board controller BBM (2) maps and stores the hydraulic pump output flow-engine speed profile.
10. The method according to claim 5, characterized in that the data ranges of the engine speed, the oil temperature, the hydraulic pump output flow, the pressure and the side-tipping angle are set in the lifting test controller (1), the upper-loading controller BBM (2) detects the engine speed and the oil temperature and transmits the detected data to the lifting test controller (1) in real time; the hydraulic system flow sensor (3), the hydraulic system pressure sensor (5), the lifting angle sensor (6) and the side-tipping angle sensor (7) transmit measured data to the lifting test controller (1) in real time; when the measured data exceeds the set data range, the lifting test controller (1) controls the audible and visual alarm to give an alarm and stop the test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311244288.2A CN117232867A (en) | 2023-09-26 | 2023-09-26 | Automatic execution device and method for lifting test of dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311244288.2A CN117232867A (en) | 2023-09-26 | 2023-09-26 | Automatic execution device and method for lifting test of dump truck |
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| Publication Number | Publication Date |
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| CN117232867A true CN117232867A (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311244288.2A Pending CN117232867A (en) | 2023-09-26 | 2023-09-26 | Automatic execution device and method for lifting test of dump truck |
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| CN (1) | CN117232867A (en) |
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- 2023-09-26 CN CN202311244288.2A patent/CN117232867A/en active Pending
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