CN106940237A - Impact damping fall-down test percussion mechanism and method - Google Patents
Impact damping fall-down test percussion mechanism and method Download PDFInfo
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- CN106940237A CN106940237A CN201710205015.5A CN201710205015A CN106940237A CN 106940237 A CN106940237 A CN 106940237A CN 201710205015 A CN201710205015 A CN 201710205015A CN 106940237 A CN106940237 A CN 106940237A
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- Prior art keywords
- impact head
- hook
- impact
- release device
- rectangular channel
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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
- 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
The present invention relates to one kind impact damping fall-down test percussion mechanism and method, belong to impact experiment testing field.Device includes impact head and release system (4)；Wherein impact head, which has, is provided with suspended axle (14) in rectangular channel (15), rectangular channel;The wherein outer inframe of release device is by bearing pin mounting hook (12), and outer inframe is also equipped with motor (10), and motor output shaft, which is provided with, can stir the driving lever (11) of hook；The housing low profile and the rectangular reservoir shape on impact head top of above-mentioned release device are mutually matched, outer frame bottom just extend into rectangular channel and can not rotated against, and the hook portion hook of the hook (12) of release device is in the suspended axle (14) of impact head.The present invention is simple in construction, measurement is accurate.
Description
Technical field
The present invention relates to impact damping fall-down test percussion mechanism and method, belong to a kind of test equipment, can be applied to
Adventure playground's pad impact test.
Background technology
Require to carry out impact test for adventure playground's pad.Deltec companies produce a kind of HIC impact devices, but still
It is to be modified.（1）Impulse form is freely falling body mode, but impact head is dome-type impact head, with standard《EN 1177-2008
Impact the measure of damping recreation ground paving damage dropping highs》It is required that inconsistent（2）Release system is electromagnetic releasing system, can
There can be certain negative influence to release, because electromagnet release system there may be Magnetic hysteresis, or because release part
There is magnetization phenomenon, release initial velocity may be caused to be weakened, cause impact velocity relatively low, ultimately result in damage dropping high inclined
It is high.（3）Using there is linear acceleration transducer, signal wire may cause impact head in test process to rotate.Because impact head is non-
Ball-type, therefore its sensor can not realize that the centre of sphere is installed, and in impact process acceleration transducer can not be ensured through overshoot
Hit in horizontal plane vertical line a little, it is impossible to ensure test data correctness.The rotation that impact head rotation in test process is produced adds
Speed may influence test result, increase the uncertainty of measurement.（4）Equipment is without height measurement function, by tester
Shock height measurement is carried out using tape measure, precision is relatively low, it is impossible to ensure the accuracy of measurement height, influence final testing result
Correctness, while also introducing uncertainty for test result.
The content of the invention
It is an object of the invention to provide a kind of accurate impact damping fall-down test percussion mechanism of simple in construction, measurement
And method.
One kind impact damping fall-down test percussion mechanism, it is characterised in that:Including impact head and release system；Wherein rush
Top of tapping the head has suspended axle is provided with rectangular channel, rectangular channel, and wireless triaxial acceleration transducer is installed in impact head；Wherein
Release device includes housing, and outer arch is provided with hitch point, and outer inframe is also equipped with electricity by bearing pin mounting hook, outer inframe
Machine, motor output shaft, which is provided with, can stir the driving lever of hook；The housing low profile of above-mentioned release device and impact head top
Rectangular reservoir shape is mutually matched, and outer frame bottom just extend into rectangular channel and can not rotated against, the hook of the hook of release device
Portion's hook is in the suspended axle of impact head.
The method that the modified impacts damping fall-down test percussion mechanism, it is characterised in that process procedure below:Release
The hook portion hook of hook of device is put in the suspended axle of impact head;When motor drives driving lever, hook is dialled at the suspension of impact head
From impact head is released；The acceleration information of impact head is measured by wireless triaxial acceleration transducer.
Stopper slot of the present invention and Wireless Acceleration Sensor avoid surveying caused by the rotation of impact head in impact process
Try error；Secondly present invention additionally uses the release system of motor-driven driving lever release shackle, it is to avoid electromagnetic releasing system
Because the influence that magnetic is sluggish or residual is to test result；The last present invention additionally uses the height regulation system of encoder instruction
System, it is ensured that the accuracy of shock height measurement.
Brief description of the drawings
Fig. 1 is impact test apparatus overall schematic；
Fig. 2 is release device schematic diagram；
Fig. 3 is impact head schematic diagram；
Fig. 4 is height measuring device schematic diagram；
Fig. 5 is hand ratchet schematic diagram；
Label title in figure：1. hand ratchet, 2. device frameworks, 3. altimeter coders, 4. impact heads and release system, 5. tunnels
By device, 6.PC, 7. controllers, 8. hitch points, 9. housings, 10. motors, 11. driving levers, 12. hooks, 13. wireless 3-axis accelerations
Sensor installation place, 14. suspended axles, 15. rectangular channels, 16. epispheres, 17. lower semispheres, 18. encoders, 19. fixed pulleys,
20. ratchet, 21. hand cranks.
Embodiment
A kind of impact test apparatus, including device framework 2, impact head and release system 4, impact head height as Figure 1-5
Degree regulation and measuring system；Above-mentioned impact head and release system are installed on device framework 2, and it is by impact head and release device group
Into；Wherein impact head generally spheroid, is made up of, episphere top has rectangular channel 15, rectangle episphere 16 and lower semisphere 17
It is provided with groove in suspended axle 14, spheroid and wireless triaxial acceleration transducer is installed；Wherein release device includes housing 9, housing
Top is provided with hitch point 8, and outer inframe is by bearing pin mounting hook 12, and outer inframe is also equipped with motor 10, motor output shaft peace
Equipped with the driving lever 11 of hook can be stirred；The housing low profile and the rectangular reservoir shape on impact head top of above-mentioned release device are mutual
Matching, outer frame bottom just extend into rectangular channel and can not rotated against, and the hook portion hook of the hook 12 of release device is in impact head
Suspended axle 14;Above-mentioned impact grease head highness regulation and measuring system are installed on device framework 2, and it is by arrangement for adjusting height and height
Measurement apparatus is constituted;Wherein height measuring device is located at the top of device framework 2, and it includes fixed pulley 19）Determine cunning with for recognizing
Take turns the encoder 18 of rotation situation;Wherein arrangement for adjusting height is located at device framework middle and lower part, and it includes ratchet 20, and and spine
The connected hand crank 21 of wheel, also including a rope, the rope one end is connected with ratchet, and the other end bypasses height measuring device
In fixed pulley after be connected with the hitch point of arch outside release device.Impact test apparatus, also including system power supply, also includes
Control system, control system is including in the impact release control module being connected with motor in release device and height measuring device
The connected shock height display module of encoder, also including being wirelessly connected with Wireless Acceleration Sensor in impact head
Acceleration signal acquisition module, also including computation analysis module.
The impact test method of the impact test apparatus, process procedure below:Rope is driven to adjust by hand crank 21
Save the height of impact head；Rope is with fixed pulley Complete Synchronization without relative slip；The number of turns that the record fixed pulley 19 of encoder 18 is turned over,
The number of turns that fixed pulley is turned over is scaled rope displacement, and then is scaled the height of impact head lifting, and this is highly impact
Actual relative altitude of the head apart from measured point；Motor 10 drives driving lever 11, and hook 12 is dialled from release at the suspension of impact head
Impact head；The acceleration information of impact head is measured by wireless triaxial acceleration transducer.
A) impact head and its delivery mode
Using spherical impact head mould, head mould carries the wireless triaxial acceleration transducer for meeting standard requirement, employs with one
Determine the hook release device of guide function.Dependency structure is as shown in Figures 2 and 3.Wherein acceleration transducer barycenter is that envelope is long
Cube geometric center, impact head ensures that barycenter is located at the centre of sphere in manufacturing process, and acceleration transducer, which is installed, ensures that its barycenter is same
The centre of sphere is overlapped.As shown in Fig. 2 relieving mechanism is rectangular body case.And impact head carries the cuboid matched with relieving mechanism and opened
Groove and hanger bar.Which, which ensure that in impact process that head mould will not be produced, may influence the rotation of test result.
B) shock height regulation and measurement
Using steel wire hang mode, shock height regulation is carried out using hand ratchet as shown in Figure 4, Figure 5.Rope and fixed pulley
Complete Synchronization is without relative slip；The number of turns that encoder record fixed pulley is turned over, rope movement is scaled by the number of turns that pulley is turned over
Distance, and then the height of impact head lifting is scaled, this is highly actual relative altitude of the impact head apart from measured point.
C) device framework
Equipment uses aluminium alloy foldable tripod structure, it is ensured that the power of test and portability of equipment.As shown in Figure 1.
d）Device data acquisition and equipment are powered
The data acquisition modes of Wireless Acceleration Sensor+wireless router+notebook computer can be used, data communication is used
Wireless WiFi, it is ensured that the reliability of data acquisition.
The acceleration transducer that equipment is used itself carries power supply, can carry lithium battery group with continuous firing, control cabinet, can
Think that wireless router and release device and shock height encoder are powered, data processing uses notebook computer, entirely sets
Without external power supply in standby test process, it is ensured that more than equipment continuous firing 3h, it is ensured that the portability of equipment and removable
Property.
Claims (2)
1. one kind impact damping fall-down test percussion mechanism, it is characterised in that:
Including impact head and release system (4)；
Wherein impact head top, which has, is provided with suspended axle (14) in rectangular channel (15), rectangular channel, wireless three are installed in impact head
Axle acceleration sensor；Wherein release device includes housing (9), and outer arch is provided with hitch point (8), and outer inframe passes through bearing pin
Mounting hook (12), outer inframe is also equipped with motor (10), and motor output shaft, which is provided with, can stir the driving lever (11) of hook；
The housing low profile and the rectangular reservoir shape on impact head top of above-mentioned release device are mutually matched, and outer frame bottom is just stretched
Entering into rectangular channel to rotate against, and the hook portion hook of the hook (12) of release device is in the suspended axle (14) of impact head.
2. the method for damping fall-down test percussion mechanism is impacted according to claim 1, it is characterised in that mistake below process
Journey:
The hook portion hook of the hook (12) of release device is in the suspended axle (14) of impact head;When motor (10) drives driving lever（11）, will
Hook（12）Dialled at the suspension of impact head from impact head is released；Impact head is measured by wireless triaxial acceleration transducer
Acceleration information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205015.5A CN106940237A (en) | 2017-03-31 | 2017-03-31 | Impact damping fall-down test percussion mechanism and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710205015.5A CN106940237A (en) | 2017-03-31 | 2017-03-31 | Impact damping fall-down test percussion mechanism and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106940237A true CN106940237A (en) | 2017-07-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710205015.5A Pending CN106940237A (en) | 2017-03-31 | 2017-03-31 | Impact damping fall-down test percussion mechanism and method |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378612A (en) * | 2020-11-12 | 2021-02-19 | 福建省宏闽电力工程监理有限公司 | Installation method of photovoltaic module junction box |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20170711 |
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