CN109596032A - Large-scale fall-down test test product falling height measurement method - Google Patents
Large-scale fall-down test test product falling height measurement method Download PDFInfo
- Publication number
- CN109596032A CN109596032A CN201811500416.4A CN201811500416A CN109596032A CN 109596032 A CN109596032 A CN 109596032A CN 201811500416 A CN201811500416 A CN 201811500416A CN 109596032 A CN109596032 A CN 109596032A
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- test product
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- 238000000691 measurement method Methods 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 230000007423 decrease Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Large-scale fall-down test test product falling height measurement method belongs to fall-down test technical field, it is therefore intended that solves the problems, such as that there are security risks by measurement result inaccuracy of the existing technology and survey crew.The present invention leaves ground the following steps are included: test product is lifted by crane, and fall to test product the adjustment of angle, and lock hoist rope；The power input structure for starting large-scale drop machine, declines test product；Pass through the tension sensor real-time measurement pulling force being arranged between hoist cable and manipulator fixed frame；If pulling force is constant, continue to decline test product；If pulling force becomes smaller, the power input structure of large-scale drop machine is rotated backward, and test product is driven to rise；Pass through tension sensor real-time measurement pulling force；If pulling force becomes larger, test product is continued to lift up；If it is constant that pulling force reaches maximum value, start stay wire displacement sensor, stay wire displacement sensor starts counting, and until test product reaches specified altitude assignment, power input structure stops working.
Description
Technical field
The invention belongs to fall-down test technical fields, and in particular to a kind of large size fall-down test test product falling height measurement side
Method.
Background technique
Drop machine is exclusively used in test product and packs the damage situations fallen, and when assessment transport handling process
Impact resistant strength can be set using twin columns guiding, height drop number, stable and reliable in work, it can be achieved that rib, face, angle fall, the machine
Using photo-electric control, can also unrestricted choice falling height, fall release using Electromagnetic Control, sample moment can be made freely to fall,
Dropping shock test is carried out to sample.
Existing large size fall arrest device, the measurement for test product falling height includes two kinds of forms substantially, and one is uses
Displacement sensor, another kind are measured using laser range finder；It, cannot be true for the measurement method based on displacement sensor
Surely measuring point, measurement result inaccuracy are played；For the measurement method based on laser range finder, big test product lifting in the air, falls it
Drop height degree measures, because the big test product being suspended in mid air can wave, if surveyed upwardly with laser range finder from ground
Test item minimum point is measured, operator station is extremely hazardous below, simultaneously as measured big test product is there are oscillating motion,
It is difficult to capture minimum point, measurement result inaccuracy.
Summary of the invention
It is an object of the invention to propose a kind of large-scale fall-down test test product falling height measurement method, the prior art is solved
There is security risk in existing measurement result inaccuracy and survey crew.
To achieve the above object, large-scale fall-down test test product falling height measurement method of the invention the following steps are included:
Step 1: ground is left into test product lifting, fall to test product the adjustment of angle, and lock hoist rope；
Step 2: start the hoist engine of large-scale drop machine, decline test product；
Step 3: real by the tension sensor being arranged between the hoist cable of large-scale drop machine and manipulator fixed frame
When measure pulling force；If pulling force is constant, continue to decline test product；If pulling force becomes smaller, step 4 is executed:
Step 4: the hoist engine of large-scale drop machine rotates backward, and test product is driven to rise；
Step 5: pass through tension sensor real-time measurement pulling force；If pulling force becomes larger, test product is continued to lift up；If pulling force
It is constant to reach maximum value, executes step 6:
Step 6: starting stay wire displacement sensor, stay wire displacement sensor start counting, until test product reaches specified height
Degree, hoist engine stop working.
The adjustment described in step 1 for fall to test product angle specifically: test product lower surface is determined by angular instrument
Angle adjustment is realized with ground angle.
The stay wire displacement sensor is fixed on large-scale drop machine manipulator fixed frame, and bracing wire end is fixed on greatly
On the portal frame of type drop machine on end floor beam.
The invention has the benefit that large-scale fall-down test test product falling height measurement method of the invention is displaced with bracing wire
The bracing wire of stay wire displacement sensor is fixed on the crossbeam of portal frame by the method that sensor and tension sensor combine, and is drawn
Force snesor is fixed between hoist cable and manipulator fixed frame, and test product lifting, stay wire displacement sensor can output displacement signal.
Being automatically performed after the setting of test item adjustable height may be implemented, without the manual measurement of operator, not only ensure that operation
The personal safety of personnel and measurement accuracy is high, data are reliable, and Automatic survey, measurement efficiency are high.When test item
After pose adjustment is finished and locked, starts hoist machine, allow test item to decline, until least significant end is contacted to earth；Hoist engine negative side
To slow rotation, test item starts on the rise, and the output force value of tension sensor is increasing, when reaching maximum value,
Illustrate that test item is liftoff, stay wire displacement sensor starts counting at this time, until test item reaches specified altitude assignment, hoist engine
Stop, determines test product falling height.
Detailed description of the invention
Fig. 1 is large-scale fall-down test test product falling height measuring method flow chart of the invention；
Fig. 2 is structural schematic diagram when large-scale fall-down test test product falling height measurement method of the invention measures height；
Structural representation when Fig. 3 is test product pose adjustment in large-scale fall-down test test product falling height measurement method of the invention
Figure；
Fig. 4 is a kind of angle for structure type that large-scale fall-down test test product falling height measurement method of the invention uses
Structural schematic diagram at locking unit in adjustment device；
Fig. 5 is a kind of angle for structure type that large-scale fall-down test test product falling height measurement method of the invention uses
Adjust packaged type goniometer configuration schematic diagram in device；
Wherein: 1, tension sensor, 2, stay wire displacement sensor, 3, hoist engine, 4, manipulator fixed frame, 5, catching plate, 6,
Fixed pulley, 7, binding rope, 8, locking unit, 801, electric cylinder, 802, lock rope device, 803, shaft, 9, packaged type angular instrument,
901, movable supporting frame, 902, backup plate, 903, pointer, 904, dial, 905, handle, 906, arc groove, 907, clump weight.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Referring to attached drawing 1- attached drawing 5, large-scale fall-down test test product falling height measurement method of the invention the following steps are included:
Step 1: ground is left into test product lifting, fall to test product the adjustment of angle, and lock hoist rope；
Step 2: start the hoist engine 3 of large-scale drop machine, decline test product；
Step 3: real by the tension sensor 1 being arranged between large-scale drop machine hoist cable and manipulator fixed frame 4
When measure pulling force；If pulling force is constant, continue to decline test product；If pulling force becomes smaller, step 4 is executed:
Step 4: the hoist engine 3 of large-scale drop machine rotates backward, and test product is driven to rise；
Step 5: pass through 1 real-time measurement pulling force of tension sensor；If pulling force becomes larger, test product is continued to lift up；If pulling force
It is constant to reach maximum value, executes step 6:
Step 6: starting stay wire displacement sensor 2, stay wire displacement sensor 2 start counting, until test product reaches specified height
Degree, hoist engine 3 stop working.
The stay wire displacement sensor 2 is fixed on large-scale drop machine manipulator fixed frame 4, and bracing wire end is fixed on
On the portal frame of large-scale drop machine on end floor beam.After the test, stay wire displacement sensor 2 is dismountable.
The crawl position 4 for the large-scale drop machine that the present invention is directed to is gripper structure, and one kind that the present invention selects is fallen
Falling angular adjustment apparatus includes:
Catching plate 5；
The fixed pulley 6 of 5 lower end of catching plate is set；
Around the binding rope 7 of fixed pulley 6, the binding rope 7 bundlees test product；
Locking unit 8 realizes locking or release of the binding rope 7 on fixed pulley 6 by the locking unit 8；
And packaged type angular instrument 9, test product tilt angle is adjusted by the packaged type angular instrument 9.
The locking unit 8 includes the electric cylinder 801 being fixed on large-scale fall arrest device catching robot along the vertical direction
And the lock rope device 802 between the catching plate 5 and the fixed pulley 6 is set；802 side of lock rope device passes through shaft 803
It is connected with the catching plate 5, electric cylinder 801 passes through the unthreaded hole being arranged on catching plate 5 and pushes described 803 turns around the shaft of lock rope device 802
It is dynamic, make the lock rope device 802 that the binding rope 7 to be pressed on the fixed pulley 6 to or be discharged binding rope 7.
The lock rope device 802 and the opposite surface of the fixed pulley 6 are cambered surface.
The packaged type angular instrument 9 includes:
Movable supporting frame 901；
The backup plate 902 that relatively described 901 upper surface of movable supporting frame, the one rib end in middle position is rotatably assorted, backup plate 902
It is free end that opposite movable supporting frame 901, which stretches out one end, and the other end is adjustment end；
Pointer 903 that is vertical with the backup plate 902 and being fixedly connected；
And it is fixed on the dial 904 of 901 front end face of movable supporting frame；
When pointer 903 is directed toward ground, it is directed toward the zero graduation of dial 904.
The packaged type angular instrument 9 further includes handle 905, and arc groove 906, the arc are provided on the backup plate 902
The center of circle of shape slot 906 is 901 hinged place of backup plate 902 and the movable supporting frame；The handle 905 passes through the arc groove 906
It is threadedly coupled with the movable supporting frame 901.
The packaged type angular instrument 9 further includes clump weight 907, and the clump weight 907 is fixed on oneself of the backup plate 902
By holding.The movable supporting frame 901 includes rack body and the universal wheel that rack body lower end surface is arranged in.
Claims (3)
1. large-scale fall-down test test product falling height measurement method, which comprises the following steps:
Step 1: ground is left into test product lifting, fall to test product the adjustment of angle, and lock hoist rope；
Step 2: start the hoist engine (3) of large-scale drop machine, decline test product；
Step 3: pass through tension sensor (1) the real-time measurement pulling force being arranged between hoist cable and manipulator fixed frame (4)；If
Pulling force is constant, continues to decline test product；If pulling force becomes smaller, step 4 is executed:
Step 4: the hoist engine (3) of large-scale drop machine rotates backward, and test product is driven to rise；
Step 5: pass through tension sensor (1) real-time measurement pulling force；If pulling force becomes larger, test product is continued to lift up；Ruo Lalida
It is constant to maximum value, execute step 6:
Step 6: starting stay wire displacement sensor (2), stay wire displacement sensor (2) start counting, until test product reaches specified height
Degree, power input structure (3) stop working.
2. large size fall-down test test product falling height measurement method according to claim 1, which is characterized in that in step 1
The adjustment for fall to test product angle specifically: determine that angle is realized in test product lower surface and ground angle by angular instrument
Degree adjustment.
3. large size fall-down test test product falling height measurement method according to claim 1 or 2, which is characterized in that described
Stay wire displacement sensor (2) is fixed on large-scale drop machine manipulator fixed frame (4), and bracing wire end is fixed on large size and falls
On the portal frame of testing machine on end floor beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500416.4A CN109596032B (en) | 2018-12-07 | 2018-12-07 | Method for measuring falling height of large-scale falling test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500416.4A CN109596032B (en) | 2018-12-07 | 2018-12-07 | Method for measuring falling height of large-scale falling test sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109596032A true CN109596032A (en) | 2019-04-09 |
| CN109596032B CN109596032B (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811500416.4A Expired - Fee Related CN109596032B (en) | 2018-12-07 | 2018-12-07 | Method for measuring falling height of large-scale falling test sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109596032B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174230A (en) * | 2019-05-05 | 2019-08-27 | 河北工业大学 | One kind falling reliability test |
| CN112649169A (en) * | 2019-10-10 | 2021-04-13 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Drop impact test platform system for measuring shock absorber buffering performance |
| CN116858479A (en) * | 2023-07-06 | 2023-10-10 | 湖南万信达科技制品有限公司 | Case and bag intensity testing arrangement |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174230A (en) * | 2019-05-05 | 2019-08-27 | 河北工业大学 | One kind falling reliability test |
| CN112649169A (en) * | 2019-10-10 | 2021-04-13 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Drop impact test platform system for measuring shock absorber buffering performance |
| CN116858479A (en) * | 2023-07-06 | 2023-10-10 | 湖南万信达科技制品有限公司 | Case and bag intensity testing arrangement |
| CN116858479B (en) * | 2023-07-06 | 2023-12-26 | 湖南万信达科技制品有限公司 | Case and bag intensity testing arrangement |
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| CN109596032B (en) | 2020-12-15 |
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