CN202362104U - Impact energy detection device for hydraulic breaking hammer - Google Patents

Impact energy detection device for hydraulic breaking hammer Download PDF

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Publication number
CN202362104U
CN202362104U CN201120426762XU CN201120426762U CN202362104U CN 202362104 U CN202362104 U CN 202362104U CN 201120426762X U CN201120426762X U CN 201120426762XU CN 201120426762 U CN201120426762 U CN 201120426762U CN 202362104 U CN202362104 U CN 202362104U
Authority
CN
China
Prior art keywords
impact energy
breaking hammer
pressure transducer
hydraulic breaking
impact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201120426762XU
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Chinese (zh)
Inventor
杨国平
朱法龙
罗铭
孟宪三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giant Hydraulic Tech Co ltd Anhui
Shanghai University of Engineering Science
Original Assignee
Giant Hydraulic Tech Co ltd Anhui
Shanghai University of Engineering Science
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giant Hydraulic Tech Co ltd Anhui, Shanghai University of Engineering Science filed Critical Giant Hydraulic Tech Co ltd Anhui
Priority to CN201120426762XU priority Critical patent/CN202362104U/en
Application granted granted Critical
Publication of CN202362104U publication Critical patent/CN202362104U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an impact energy detection device for a hydraulic breaking hammer. The device includes a pressure sensor, a data acquisition card, a computer and an output module, which are connected sequentially, wherein the pressure sensor is fixed on an action horizontal plane of a drill rod of the breaking hammer through a sensor fixing piece. Compared with the prior art, the impact energy detection device has the advantages of simple method, convenience for operation, accuracy in detection result, and the like.

Description

A kind of hydraulic breaking hammer impact energy pick-up unit
Technical field
The utility model relates to a kind of breaking hammer performance and surveys the field, especially relates to a kind of hydraulic breaking hammer impact energy pick-up unit.
Background technology
Impact energy has reflected the breaking capacity of hydraulic breaking hammer, and frequency of impact has reflected the broken speed of hydraulic breaking hammer, and impact energy and frequency of impact have determined the work quality of quartering hammer jointly as two performance parameters.In the sample of many manufacturers or technological document, frequency of impact often only is provided, does not mark impact energy.For frequency of impact, the detection of impact energy is higher in aspect demands such as technology, expenses, and the impact energy that obtains because of the difference of detection method also has certain difference.Because present domestic do not have unified detection method and standard, measured result's accuracy, repeatability, comparability are all very poor, so the impact energy parameter that each manufacturer provides is prone to cause confusion, providing of impact energy is also just difficult more.
At present, knocker impact energy parameter test method commonly used comprises end speed method, load-position diagram method, stress wave, mechanical measurement method, nitrogen chamber tonometry.
Patent CN1387030 is apparatus and method of calculating piston kinetic energy with measurement nitrogen chamber pressure, and measuring method is simple and easy to do, but for the all-hydraulic effect hydraulic hammer that does not have nitrogen chamber, then can't use.It is the variation according to the nitrogen chamber volume simultaneously, finds the solution the displacement of piston motion, extrapolates the maximal rate of piston motion, draws kinetic energy at last, but has ignored the weight of piston front and back chamber active area and piston itself.Though the result who draws has thus reflected the kinetic energy that piston has to a certain extent, can not accurately reflect the impact energy that hydraulic impactor has.Though the general detected impact energy of similar approach has to a certain degree reflected the kinetic energy that piston has; But be delivered to drill steel and have the certain energy loss later on; Make detected impact energy and the practical function energy on object not be inconsistent, and then measurement result depart from actual value more.
The utility model content
The purpose of the utility model is exactly to provide a kind of method simple for the defective that overcomes above-mentioned prior art existence, and easy to operate, testing result is hydraulic breaking hammer impact energy pick-up unit accurately.
The purpose of the utility model can realize by the following technical programs:
A kind of hydraulic breaking hammer impact energy pick-up unit; This pick-up unit comprises pressure transducer, data collecting card, computing machine and output module; Described pressure transducer, data collecting card, computing machine and output module are connected successively, and described pressure transducer is fixed on the exposure level face of crushing hammar drill rod through the sensor fixture.
Be provided with auxiliary circuit between described pressure transducer and the data collecting card, this auxiliary circuit comprises successively amplifying circuit, rectification circuit and the filtering circuit that connects, and the voltage signal that pressure transducer is produced amplifies, rectification and filtering.
Described output module comprises printer and display.
Compared with prior art, the utility model accurately detects effective impact energy of quartering hammer, and method of testing is simple, handling safety, convenience.Not only can be used for the laboratory impact energy of quartering hammer is tested, also can be used for manufacturer easily the various performance of operating condition of quartering hammer are carried out factory inspection.Unified performance for different manufacturers, dissimilar knockers more also has higher reference value, because the method is easy for installation, it is simple to use, very helps operating the operation and maintenance to checkout equipment with managerial personnel in addition.
Description of drawings
Fig. 1 is the structural representation of the utility model pick-up unit;
Process flow diagram when Fig. 2 is this pick-up unit use of the utility model;
Fig. 3 is impulsive force-time plot;
Wherein, 1 is pressure transducer, and 2 is data collecting card, and 3 is computing machine, and 4 is output module, and 5 is the sensor fixture, and 6 is quartering hammer, and 61 is drill steel.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of hydraulic breaking hammer impact energy pick-up unit, this pick-up unit comprises pressure transducer 1, data collecting card 2, computing machine 3 and output module 4.Be provided with auxiliary circuit between pressure transducer and the data collecting card, this auxiliary circuit comprises successively amplifying circuit, rectification circuit and the filtering circuit that connects, and the voltage signal that pressure transducer is produced amplifies, rectification and filtering.Pressure transducer 1, auxiliary circuit, data collecting card 2, computing machine 3 and output module 4 are connected successively, and pressure transducer 1 is fixed on the exposure level face of drill steel 61 through sensor fixture 5.Output module 4 comprises printer and display, is used to export testing result.
Idiographic flow when the utility model uses is as shown in Figure 2; At first detect the crushing hammar drill rod impulsive force through pressure transducer 1, and be converted into voltage signal, data collecting card 2 is gathered voltage signal with some cycles then; The data that computing machine 3 reading of data capture cards 2 are gathered; The line data of going forward side by side is handled, and obtains quartering hammer 6 impact property parameters such as impact energy, frequency of impact, the result of exporting through output module 4 at last.
Fig. 3 is an impulsive force---the time curve synoptic diagram, and wherein F is an impact reactive force, t is the power effect time.In a test period, load one time curve and area that time coordinate encloses are pressure sensor detecting device and make the sweay I that the time spent has, maximum force F receiving drill steel mMomentum before is I mThe size of hydraulic breaking hammer impact energy is impact velocity v 0The time energy that had, detected momentum can obtain v 0, just can realize the detection of impact ability.
The voltage signal of pressure transducer 1 after amplification, rectification and filtering, data collecting card collection, and read and convert the impulsive force value into through linear relationship by computing machine.Impulsive force value to recording is carried out data analysis, and whether judgment data carries out computing effectively again.According to integral principle, horizontal ordinate is carried out n time disperse, obtain T 0, T 1..., T N-1, corresponding to n power value.But the area approximate representation that curve is surrounded when n is enough big is: F 0T 0+ F 1T 1+ ... F N-1T N-1When reaching F mShi Jinhang m-1 time is discrete, but the m value area that enough curve is surrounded greatly the time also approximate representation be: F 0T 0+ F 1T 1+ ... F M-1T M-1Wherein, F 0, F 1... .F M-1, F m... .F N-1, F nCan obtain through data acquisition, i.e. indiscrete value quantization in the sampling process; T 0, T 1..., T M-1, T m..., T N-1, T nCan obtain according to the sampling time, and the time discretization of the continuous quantity in the sampling process.The impact reactive force momentum that therefore can get hydraulic impact hammer is: I m=F 0T 0+ F 1T 1+ ... F M-1T M-1+ F mT m(1).
According to the dynamometry principle of pressure transducer, F=KU, K are scale-up factor, and U is the voltage that sensor records, and can obtain:
F 0=KU 0,F 1=KU 1,...F m-1=KU m-1,F m=KU m(2)。
Again by theorem of momentum:
Ft=mv 2-mv 1(v 2Be end speed, v 1Be initial velocity) (3).
When piston hit drill steel, under the acting in conjunction of the reacting force F of drill steel and piston self gravitation G, momentum changed, and can be got by theorem of momentum (3):
∫ 0 τ [ Fdt ] - Gτ = Mv 1 - M ( - v 0 ) = Mv 0 - - - ( 4 ) .
Explain: v 0Initial velocity when hitting, v for piston 1Get zero for hitting end speed
I i=F it=KU it
I m=F 0T 0+F 1T 1+......F m-1T m-1+F mT m=KU 0T 0+KU 1T 1+......KU m-1T m-1+KU mT m(5)
I m = Σ i = 0 m I i = Σ i = 0 m KU i T i
Can get by (4):
v 0 = ∫ 0 τ [ Fdt ] - Gτ M = I m - Gτ M - - - ( 6 )
Can get the hydraulic impactor impact energy by (5) (6) is:
E = Mv 0 2 / 2 = ( I m - Gτ ) 2 / 2 M = ( KU 0 T 0 + KU 1 T 1 + . . . . . . KU m - 1 T m - 1 + KU m T m - Gτ ) 2 / 2 M Wherein:
F m---the maximum impact reacting force
Valid data number before the high-tensile strength value point that arrives of m---sampling
U i---the sensor voltage that sampling obtains
V 0---impact initial velocity
T---the time in SI
The quality of M---drill steel
K---pressure transducer scale-up factor
τ---effective acting time
Be applicable to the ram hammer of different effects modes such as nitrogen explosion type hydraulic hammer, full hydraulic quartering hammer.
The impact force-time curve carries out Treatment Analysis, draws N the time T that peak value is used n, and one-shot period of motion T=T n/ N, frequency of impact are f=1/T.

Claims (3)

1. hydraulic breaking hammer impact energy pick-up unit; This device comprises pressure transducer, data collecting card, computing machine and output module; Described pressure transducer, data collecting card, computing machine and output module are connected successively; It is characterized in that described pressure transducer is fixed on the exposure level face of crushing hammar drill rod through the sensor fixture.
2. a kind of hydraulic breaking hammer impact energy pick-up unit according to claim 1; It is characterized in that; Be provided with auxiliary circuit between described pressure transducer and the data collecting card, this auxiliary circuit comprises amplifying circuit, rectification circuit and the filtering circuit that connects successively.
3. a kind of hydraulic breaking hammer impact energy pick-up unit according to claim 1 is characterized in that described output module comprises printer and display.
CN201120426762XU 2011-11-01 2011-11-01 Impact energy detection device for hydraulic breaking hammer Expired - Fee Related CN202362104U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120426762XU CN202362104U (en) 2011-11-01 2011-11-01 Impact energy detection device for hydraulic breaking hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120426762XU CN202362104U (en) 2011-11-01 2011-11-01 Impact energy detection device for hydraulic breaking hammer

Publications (1)

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CN202362104U true CN202362104U (en) 2012-08-01

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103091020A (en) * 2011-11-01 2013-05-08 上海工程技术大学 Detection method and detection device for impact energy of hydraulic breaking hammer
CN103353369A (en) * 2013-06-28 2013-10-16 山河智能装备股份有限公司 Impact performance testing system for impact mechanism
CN106568547A (en) * 2016-11-10 2017-04-19 浙江大学宁波理工学院 Mold repair hammering force test device and mold repair hammering force test method
CN106679865A (en) * 2016-11-28 2017-05-17 山西北方机械制造有限责任公司 Method for measuring impact energy of impact mechanism
CN112729410A (en) * 2021-01-08 2021-04-30 烟台大学 Device and method for testing displacement speed of piston of breaking hammer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103091020A (en) * 2011-11-01 2013-05-08 上海工程技术大学 Detection method and detection device for impact energy of hydraulic breaking hammer
CN103353369A (en) * 2013-06-28 2013-10-16 山河智能装备股份有限公司 Impact performance testing system for impact mechanism
CN106568547A (en) * 2016-11-10 2017-04-19 浙江大学宁波理工学院 Mold repair hammering force test device and mold repair hammering force test method
CN106679865A (en) * 2016-11-28 2017-05-17 山西北方机械制造有限责任公司 Method for measuring impact energy of impact mechanism
CN112729410A (en) * 2021-01-08 2021-04-30 烟台大学 Device and method for testing displacement speed of piston of breaking hammer

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120801

Termination date: 20141101