CN206920106U - Impact damping fall-down test impact head - Google Patents
Impact damping fall-down test impact head Download PDFInfo
- Publication number
- CN206920106U CN206920106U CN201720328895.0U CN201720328895U CN206920106U CN 206920106 U CN206920106 U CN 206920106U CN 201720328895 U CN201720328895 U CN 201720328895U CN 206920106 U CN206920106 U CN 206920106U
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- impact
- impact head
- head
- test
- episphere
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- Expired - Fee Related
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- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 238000013016 damping Methods 0.000 title claims abstract description 8
- 230000001133 acceleration Effects 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 238000009863 impact test Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000035939 shock Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Impact damping fall-down test impact head is the utility model is related to, belongs to a kind of experiment test equipment, can be applied to adventure playground's pad impact test.It is made up of episphere (16) and lower semisphere (17), and episphere top has rectangular channel (15), and suspended axle (14) is provided with rectangular channel, wireless triaxial acceleration transducer is installed in spheroid.The system have it is portable, efficiently and accurately the characteristics of.
Description
Technical field
Impact damping fall-down test impact head is the utility model is related to, belongs to a kind of test equipment, can be applied to children
Recreation ground pads impact test.
Background technology
Padded for adventure playground and require to carry out impact test.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 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
Magnetization phenomenon be present, release initial velocity may be caused to be weakened, cause impact velocity relatively low, it is inclined to ultimately result in damage dropping high
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, test data correctness can not be ensured.Rotation caused by impact head rotation in test process 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, can not ensure to measure the accuracy of height, influence final testing result
Correctness, while also introduce uncertainty for test result.
Utility model content
The purpose of this utility model is to provide a kind of simple in construction, accurate impact damping fall-down test impact of measurement
Head.
One kind impact damping fall-down test impact head, it is characterised in that:It is made up of episphere and lower semisphere, on episphere
Portion has rectangular channel, and suspended axle is provided with rectangular channel, wireless triaxial acceleration transducer is installed in spheroid；Episphere and lower half
Barycenter after ball combination is located at the centre of sphere, and the barycenter of wireless triaxial acceleration transducer overlaps with the centre of sphere.
Impact head of the present utility model uses homogeneous spherical impact head（Impact head center of gravity is located at the centre of sphere）Ensure that measurement is accurate
Property.
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.
Router, 6.PC, 7. controllers, 8. hitch points, 9. housings, 10. motors, 11. driving levers, 12. hooks, 13. wireless three axles accelerate
Sensor installation place is spent, 14. suspended axles, 15. rectangular channels, 16. epispheres, 17. lower semispheres, 18. encoders, 19. is fixed sliding
Wheel, 20. ratchets, 21. hand cranks.
Embodiment
A kind of impact test apparatus as Figure 1-5, including device framework 2, impact head and release system 4, impact head height
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 16 and lower semisphere 17, and episphere top has rectangular channel 15, rectangle
Suspended axle 14 is installed in groove, wireless triaxial acceleration transducer is installed in spheroid；Wherein release device includes housing 9, housing
Top is provided with hitch point 8, and for outer inframe by bearing pin mounting hook 12, outer inframe is also equipped with motor 10, motor output shaft peace
Equipped with the driving lever 11 that can stir hook；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 forms;Wherein height measuring device is located at the top of device framework 2, and it includes fixed pulley 19）Determine cunning with for identifying
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, in addition to a rope, the rope one end are 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, in addition to system power supply, in addition to
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, in addition to be wirelessly connected with Wireless Acceleration Sensor in impact head
Acceleration signal acquisition module, in addition to 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 slides with fixed pulley Complete Synchronization without relative；Encoder 18 records the number of turns that fixed pulley 19 turns 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 band
There is the hook release device of certain guide function.Dependency structure is as shown in Figures 2 and 3.Wherein acceleration transducer barycenter is bag
Network cuboid geometric center, impact head ensure that barycenter is located at the centre of sphere in manufacturing process, and acceleration transducer installation ensures its matter
The heart overlaps with the centre of sphere.As shown in Fig. 2 relieving mechanism is rectangular body case.And impact head is carried with the rectangular of relieving mechanism matching
Body is slotted and hanger bar.Which ensure that head mould will not produce the rotation that may influence test result in impact process.
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 is with determining
Pulley Complete Synchronization slides without relative；The number of turns that encoder record fixed pulley turns over, the number of turns that pulley is turned over are scaled rope
Displacement, 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, ensure that the power of test and portability of equipment.Such as Fig. 1 institutes
Show.
d）Device data acquisition and equipment power supply
The data acquisition modes of Wireless Acceleration Sensor+wireless router+notebook computer, data communication can be used
Using wireless WiFi, the reliability of data acquisition ensure that.
The acceleration transducer that equipment uses itself carries power supply, can carry lithium battery group with continuous firing, control cabinet, can
Think wireless router and release device and the power supply of shock height encoder, data processing uses notebook computer, entirely set
Without external power supply in standby test process, it is ensured that more than equipment continuous firing 3h, ensure the portability of equipment and may move
Property.
Claims (1)
1. one kind impact damping fall-down test impact head, it is characterised in that:
It is made up of episphere (16) and lower semisphere (17), episphere top has rectangular channel (15), and suspension is provided with rectangular channel
Axle (14), the interior installation wireless triaxial acceleration transducer of spheroid；
Barycenter after episphere and lower semisphere combination is located at the centre of sphere, and the barycenter of wireless triaxial acceleration transducer overlaps with the centre of sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720328895.0U CN206920106U (en) | 2017-03-31 | 2017-03-31 | Impact damping fall-down test impact head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720328895.0U CN206920106U (en) | 2017-03-31 | 2017-03-31 | Impact damping fall-down test impact head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206920106U true CN206920106U (en) | 2018-01-23 |
Family
ID=61311383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720328895.0U Expired - Fee Related CN206920106U (en) | 2017-03-31 | 2017-03-31 | Impact damping fall-down test impact head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206920106U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979851A (en) * | 2017-03-31 | 2017-07-25 | 江苏省检验检疫科学技术研究院 | Impact damping fall-down test impact head |
-
2017
- 2017-03-31 CN CN201720328895.0U patent/CN206920106U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979851A (en) * | 2017-03-31 | 2017-07-25 | 江苏省检验检疫科学技术研究院 | Impact damping fall-down test impact head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 |