CN114371020B - Loader walking dynamic property testing method - Google Patents
Loader walking dynamic property testing method Download PDFInfo
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- CN114371020B CN114371020B CN202111598834.3A CN202111598834A CN114371020B CN 114371020 B CN114371020 B CN 114371020B CN 202111598834 A CN202111598834 A CN 202111598834A CN 114371020 B CN114371020 B CN 114371020B
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 230000009194 climbing Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000011156 evaluation Methods 0.000 claims description 12
- 238000010998 test method Methods 0.000 claims description 5
- 238000005457 optimization Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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Abstract
The invention discloses a loader walking dynamic property testing method, which comprises the following steps: s1, preparing a site; s2, driving on a normal climbing slope; and S3, the working device is pressed down and climbs the slope to run. The power performance of the loader is conveniently tested, and effective data is provided for the power optimization of the whole loader.
Description
Technical Field
The invention relates to a loader walking dynamic property testing method.
Background
At present, the technical routes of the domestic loaders of various brands are basically consistent, the matching performance parameters of the power and the transmission system of the whole loader are slightly different, and if the walking power performance of the loader needs to be tested, professional testing equipment and operation sites, such as special testing equipment, are needed: the measuring range is 20 tons and above of the tension meter. Dedicated field: ground anchors/piles meeting the maximum traction force of the loader. Specific test scheme: the tension meter, the ground anchor/pile and the loader are connected on the same horizontal line by using the steel wire rope, and the tension value of the loader under the working conditions of full load, lowest speed forward gear and maximum accelerator, namely the data displayed by the tension meter.
The technical scheme has the following defects: the special equipment, the site and the connection auxiliary device are needed, the maximum traction force of the loader can only be tested, and the torque converter cannot be accurately tested after stalling.
Disclosure of Invention
The invention aims to provide the method for testing the walking dynamic performance of the loader, which aims at the problems, is convenient for testing the dynamic performance of the loader and provides effective data for optimizing the power of the whole loader.
In order to achieve the above purpose, the invention discloses a loader walking dynamic property testing method, which comprises the following steps:
S1, preparing a site, selecting a ramp, taking a position which is a certain distance away from a ramp starting point as a loading machine evaluation test starting point, taking a position which is a certain distance away from the ramp starting point to the ramp as an evaluation test end point, driving to a test starting point position, requiring the loading machine to be opposite to the ramp, and avoiding the adjustment direction of the walking process, wherein the center points of two front wheels are perpendicular to the starting point position;
S2, normally climbing and driving, idling an engine after the loader is driven to a starting point position, and hanging in a forward gear, and ensuring that a prototype is stopped at the starting point position through service braking; after receiving a test start instruction, a driver releases the service brake and simultaneously steps on the accelerator of the engine to the bottom, a timer starts timing at the same time, and when the center of the front wheel runs to the end position, the timer finishes timing, and the driver records the change condition of the engine speed in the climbing process of the prototype;
S3, the working device is pressed down and climbs a slope to run, after the loader runs to the starting point position, the engine is idle, a bucket rotating handle of the working device is arranged at the bucket collecting position, a forward gear is hung, and the prototype is ensured to stop at the starting point position through service braking; after receiving a test start instruction, a driver releases the service brake and simultaneously steps on the accelerator of the engine to the bottom, a timer starts timing at the same time, and when the center of the front wheel runs to the end position, the timer finishes timing, and the driver records the change condition of the engine speed in the climbing process of the prototype.
The power performance of the loader is conveniently tested, and effective data is provided for the power optimization of the whole loader.
Preferably, in step S1, a ramp of 20% or 12 ° is selected. The walking dynamic property of the loader is conveniently tested.
Preferably, in step S1, a position 2 meters away from the start of the ramp is used as the start of the evaluation test of the loader, and a position from the start of the ramp to 38 meters away from the start of the ramp is used as the end of the evaluation test. The test distance is enough, so that the walking dynamic property of the loader can be conveniently tested.
Preferably, in step S1, the ramp has a length of 50 meters. Space is provided for loader operation.
Preferably, in step S2, the driver records the minimum engine speed during the hill climbing of the prototype.
Preferably, in step S3, the driver records the minimum engine speed during the hill climbing of the prototype.
Preferably, in step S2, the lowest gear and the common work gear are tested separately. The test is more comprehensive and visual.
Preferably, in step S3, the lowest gear is tested.
Preferably, in step S1, the ramp surface is a sandy ground. The tire is guaranteed not to slip, the ramp surface is smooth, and obvious bulges and depressions are avoided.
Preferably, in step S1, the loader is rated full. The walking dynamic property of the loader is conveniently tested.
In summary, the beneficial effects of the invention are as follows: the power performance of the loader is conveniently tested, and effective data is provided for the power optimization of the whole loader.
Drawings
FIG. 1 is a schematic view of a ramp in a method for testing the walking dynamics of a loader according to the present invention;
FIG. 2 is a test result of a loader walking dynamics test method according to the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, a loader walking dynamic property testing method, testing equipment: a 50m tape measure, a stopwatch.
Specifically, the method comprises the following steps:
S1, preparing a site, selecting a ramp, taking a position which is a certain distance away from the ramp starting point as a loading machine evaluation test starting point, taking a position which is a certain distance away from the ramp starting point to the ramp as an evaluation test end point, and carrying out rated full load test on the loading machine so as to facilitate testing of walking dynamic performance of the loading machine. And the vehicle runs to a test starting point position, the loader is required to be opposite to the ramp, the direction adjustment in the running process is avoided, and the center points of the two front wheels are perpendicular to the starting point position.
Specifically, in step S1, a ramp of 20% or 12 ° is selected. The walking dynamic property of the loader is conveniently tested.
Specifically, in step S1, a position 2m away from the start point of the ramp is taken as the start point of the evaluation test of the loader, and a position from the start point of the ramp to 38 m of the ramp is taken as the end point of the evaluation test, wherein the test distance is 40m. The test distance is enough, so that the walking dynamic property of the loader can be conveniently tested.
Specifically, in step S1, the ramp has a length of 50 meters. Space is provided for loader operation.
Specifically, in step S1, the surface of the ramp is a sandy land, so that the tire is not slipped, and the surface of the ramp is smooth without obvious protrusions or depressions.
S2, normally climbing and driving, idling an engine after the loader is driven to a starting point position, and hanging in a forward gear, and ensuring that a prototype is stopped at the starting point position through service braking; after receiving a test start instruction, a driver releases the service brake and simultaneously steps on the accelerator of the engine to the bottom, a timing person starts timing at the same time, and when the center of the front wheel runs to the end position, the timing person finishes timing, and the driver records the change condition of the engine speed in the climbing process of the prototype. The normal climbing working condition is simulated, the data is more real, and effective data is provided for the power optimization of the whole machine.
Specifically, in step S2, the driver records the lowest engine speed during the hill climbing of the prototype. The engine is convenient to record, and the lowest rotating speed of the engine can reflect the power performance of the whole engine.
Specifically, in step S2, the lowest gear and the common work gear are tested, respectively. The test is more comprehensive and visual.
S3, the working device is pressed down and climbs a slope to run, after the loader runs to the starting point position, the engine is idle, a bucket rotating handle of the working device is arranged at the bucket collecting position, a forward gear is hung, and the prototype is ensured to stop at the starting point position through service braking; after receiving a test start instruction, a driver releases the service brake and simultaneously steps on the accelerator of the engine to the bottom, a timer starts timing at the same time, and when the center of the front wheel runs to the end position, the timer finishes timing, and the driver records the change condition of the engine speed in the climbing process of the prototype. The working device is simulated to build pressure and climb the slope, the data is more real, and effective data is provided for the power optimization of the whole machine.
Specifically, in step S3, the driver records the lowest engine speed during the hill climbing of the prototype. The engine is convenient to record, and the lowest rotating speed of the engine can reflect the power performance of the whole engine.
Specifically, in step S3, the lowest gear is tested. The test is more accurate.
The power performance of the loader is conveniently tested, and effective data is provided for the power optimization of the whole loader. Engineering technicians can adjust the walking power performance of the loader according to the test data to achieve the optimal state.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (9)
1. The walking dynamic property testing method for the loader is characterized by comprising the following steps of:
S1, preparing a site, selecting a ramp, taking a position which is a certain distance away from a ramp starting point as a loading machine evaluation test starting point, taking a position which is a certain distance away from the ramp starting point to the ramp as an evaluation test end point, driving to a test starting point position, requiring the loading machine to be opposite to the ramp, and avoiding the adjustment direction of the walking process, wherein the center points of two front wheels are perpendicular to the starting point position;
S2, normally climbing and driving, idling an engine after the loader is driven to a starting point position, and hanging in a forward gear, and ensuring that a prototype is stopped at the starting point position through service braking; after receiving a test start instruction, a driver releases the service brake and simultaneously steps on the accelerator of the engine to the bottom, a timer starts timing at the same time, and when the center of the front wheel runs to the end position, the timer finishes timing, and the driver records the change condition of the engine speed in the climbing process of the prototype;
S3, the working device is pressed down and climbs a slope to run, after the loader runs to the starting point position, the engine is idle, a bucket rotating handle of the working device is arranged at the bucket collecting position, a forward gear is hung, and the prototype is ensured to stop at the starting point position through service braking; after receiving a test start instruction, a driver releases the service brake and simultaneously steps on the accelerator of the engine to the bottom, a timer starts timing at the same time, and when the center of the front wheel runs to the end position, the timer finishes timing, and the driver records the change condition of the engine speed in the climbing process of the prototype.
2. The method of testing the walking dynamics of a loader according to claim 1, characterized in that in step S1, a 20% or 12 ° slope is selected.
3. The method of testing walking dynamics of a loader according to claim 2, characterized in that in step S1, a distance of 2 meters from the start of the ramp is used as the start of the evaluation test of the loader, and a distance of 38 meters from the start of the ramp to the end of the evaluation test is used.
4. A method of testing the walking dynamics of a loader according to claim 3, characterized in that in step S1, the length of the ramp is 50 meters.
5. The method for testing walking dynamics of loader according to claim 1, characterized in that in step S2, the driver records the lowest engine speed during the hill climbing of the prototype.
6. The method for testing walking dynamics of loader according to claim 1, characterized in that in step S3, the driver records the lowest engine speed during the hill climbing of the prototype.
7. The method for testing walking dynamics of loader according to claim 1, characterized in that in step S2, the lowest gear and the usual work gear are tested, respectively.
8. The loader traveling dynamics test method according to any one of claims 1 to 7, characterized in that in step S1, the ramp surface is a sandy ground.
9. The method for testing the walking dynamics of a loader according to any one of claims 1 to 7, characterized in that in step S1, the loader is rated full.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111598834.3A CN114371020B (en) | 2021-12-24 | 2021-12-24 | Loader walking dynamic property testing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111598834.3A CN114371020B (en) | 2021-12-24 | 2021-12-24 | Loader walking dynamic property testing method |
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| CN114371020A CN114371020A (en) | 2022-04-19 |
| CN114371020B true CN114371020B (en) | 2024-05-24 |
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| CN202111598834.3A Active CN114371020B (en) | 2021-12-24 | 2021-12-24 | Loader walking dynamic property testing method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040057290A (en) * | 2002-12-26 | 2004-07-02 | 현대중공업 주식회사 | Engine low idle RPM control method of wheel loader |
| JP2010145336A (en) * | 2008-12-22 | 2010-07-01 | Kanto Auto Works Ltd | Traveling tester for automobile |
| JP2014174026A (en) * | 2013-03-11 | 2014-09-22 | Hino Motors Ltd | Engine simulation test method |
| CN104729859A (en) * | 2013-12-18 | 2015-06-24 | 北汽福田汽车股份有限公司 | Automobile climbing testing method and system |
| CN107560870A (en) * | 2017-08-04 | 2018-01-09 | 南京越博电驱动系统有限公司 | A kind of electric automobile simulation climbing method of testing |
| WO2020065915A1 (en) * | 2018-09-28 | 2020-04-02 | 日立建機株式会社 | Wheel loader |
| CN113536477A (en) * | 2021-06-30 | 2021-10-22 | 英轩重工有限公司 | Parameter design and vibration isolation performance analysis and evaluation method for loader vibration isolation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781434A (en) * | 2018-12-26 | 2019-05-21 | 北京百度网讯科技有限公司 | Ramp driving performance test method, device and storage medium |
-
2021
- 2021-12-24 CN CN202111598834.3A patent/CN114371020B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040057290A (en) * | 2002-12-26 | 2004-07-02 | 현대중공업 주식회사 | Engine low idle RPM control method of wheel loader |
| JP2010145336A (en) * | 2008-12-22 | 2010-07-01 | Kanto Auto Works Ltd | Traveling tester for automobile |
| JP2014174026A (en) * | 2013-03-11 | 2014-09-22 | Hino Motors Ltd | Engine simulation test method |
| CN104729859A (en) * | 2013-12-18 | 2015-06-24 | 北汽福田汽车股份有限公司 | Automobile climbing testing method and system |
| CN107560870A (en) * | 2017-08-04 | 2018-01-09 | 南京越博电驱动系统有限公司 | A kind of electric automobile simulation climbing method of testing |
| WO2020065915A1 (en) * | 2018-09-28 | 2020-04-02 | 日立建機株式会社 | Wheel loader |
| CN113536477A (en) * | 2021-06-30 | 2021-10-22 | 英轩重工有限公司 | Parameter design and vibration isolation performance analysis and evaluation method for loader vibration isolation device |
Non-Patent Citations (2)
| Title |
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| Dynamic characteristics of passive and semi-active cabin mounts for vibration control of a wheel loader;Yang, SY 等;INTERNATIONAL JOURNAL OF HEAVY VEHICLE SYSTEMS;20190322;第26卷(第2期);239-261 * |
| 装载机动力及经济性计算与分析;谢毅;现代制造技术与装备;20180315;119-121 * |
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| CN114371020A (en) | 2022-04-19 |
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Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: Lovol Heavy Industry Group Co.,Ltd. Country or region after: China Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. Country or region before: China |
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