CN109137911A - The vibrohammer and pile sinking process of mangneto driving - Google Patents
The vibrohammer and pile sinking process of mangneto driving Download PDFInfo
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- CN109137911A CN109137911A CN201811145564.9A CN201811145564A CN109137911A CN 109137911 A CN109137911 A CN 109137911A CN 201811145564 A CN201811145564 A CN 201811145564A CN 109137911 A CN109137911 A CN 109137911A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 21
- 239000004065 semiconductor Substances 0.000 claims description 42
- 238000001816 cooling Methods 0.000 claims description 41
- 230000006698 induction Effects 0.000 claims description 40
- 239000002826 coolant Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 32
- 239000012267 brine Substances 0.000 claims description 19
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000003446 memory effect Effects 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 claims 9
- 238000010248 power generation Methods 0.000 claims 6
- 238000012806 monitoring device Methods 0.000 claims 5
- 239000007788 liquid Substances 0.000 description 17
- 239000004020 conductor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- MOSURRVHVKOQHA-UHFFFAOYSA-N [Tb].[Dy] Chemical group [Tb].[Dy] MOSURRVHVKOQHA-UHFFFAOYSA-N 0.000 description 3
- 241000282693 Cercopithecidae Species 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses the vibrohammers and pile sinking process of a kind of driving of mangneto, and vibrohammer includes mass block and mangneto driver；The mangneto driver includes alternating source, rectification circuit and magnetostriction apparatus, and the magnetostriction apparatus includes magnetostriction block and conducting wire, and conducting wire is wound on the outside of magnetostriction block；The magnetic field that magnetostriction block is subject to when the electric current in conducting wire changes changes, and the length of magnetostriction block also changes correspondingly at this time.The present invention can allow the excited frequency of vibrohammer to be directly entered working frequency.Overcome the problems, such as when the starting of common vibrohammer that excited frequency is increased to by zero causes ambient environment vibrations excessive during working frequency because passing through vibration hammer-stake-foundation System resonant frequency.
Description
Technical field
The invention belongs to the vibrohammers that the pile vibrosinking field of geotechnical engineering more particularly to a kind of mangneto drive.
Background technique
, can be in stake top portion static loading to which stake to be pressed into soil layer in geotechnical engineering piling construction, it can also be in stake
Stake is squeezed into soil layer with shock loading by top, but larger to surrounding environment influence under impact loading, therefore in building woods
The method of this impact piling in vertical urban district is often forbidden to use.Also have at present and hammers into shape that stake is driven to generate in stake top clamping vibration
The vertical sustained vibration of certain frequency, the side friction and end resistance of stake and soil reduce in this process, so that stake be sunk
Enter in ground, this method is in contrast smaller to surrounding environment influence, but this vibration hammer is by pairs of eccentric matter
Gauge block rotation generates vertical exciting force, and the rotational frequency of eccentric massblock is gradually increased and wanted by zero during starting
Pass through the resonant frequency of ground, up to reaching stable work rotational frequency, and the rotational frequency of eccentric massblock passes through vibration
Foundation vibration obviously increases when hammer-stake-foundation System resonant frequency, and excessive vibration especially can be caused to close to buildings in urban district
It is dynamic, therefore this vibration hammer is limited in the use in urban district.Therefore people, which have also been developed, exempts from resonance hammer, i.e. multiple groups eccentric mass
When block rotational frequency is near vibration hammer-stake-foundation System resonant frequency, the vertical and horizontal direction exciting of eccentric massblock generation
Power is cancelled out each other, and would not generate vibration to ground when eccentric massblock accelerates rotation to pass through resonant frequency in this way influences, and
Eccentric massblock revolving speed reach the horizontal direction exciting force that multiple groups eccentric massblock after stable working frequency generates cancel out each other and
Vertical exciting force is overlapped mutually, so that a vibration-sunk be driven to enter ground.This resonance hammer of exempting from is because to close to buildings shadow
Ring very little, therefore application of succeeding in the intensive urban district of building, but it is this exempt from resonance hammer into shape it is at high price and far more than
Common vibration hammer price.Therefore a kind of vibrohammer is needed, it has mangneto driver, can be directly entered vibrohammer
Working frequency, so that the process that frequency needs to be gradually increased to working frequency by zero when conventional vibration pile monkey being avoided to start, also keeps away
Exempt to cause close to buildings to vibrate excessive problem when passing through vibration hammer-stake-foundation System resonant frequency because of initiation culture.
Summary of the invention
The present invention in order to when common vibrohammer being overcome to start excited frequency by zero increase to during working frequency because
The problem passed through vibration hammer-stake-foundation System resonant frequency and cause ambient environment vibrations excessive, in order to allow vibrohammer
Excited frequency is directly entered working frequency, and the present invention provides a kind of vibrohammers of mangneto driving.
Technical solution of the present invention: a kind of vibrohammer of mangneto driving, including mass block and mangneto driver；
The mangneto driver includes alternating source, rectification circuit and magnetostriction apparatus, the magnetostriction apparatus packet
Magnetostriction block and conducting wire are included, conducting wire is wound on the outside of magnetostriction block, and alternating source, rectification circuit and conducting wire are sequentially connected；When
The magnetic field that magnetostriction block is subject to when electric current in conducting wire changes changes, and the length of magnetostriction block also changes therewith at this time
Become；
The mass block and magnetostriction block are sequentially connected from top to bottom.
Preferably, the mangneto driver is furnished with magnetostriction block failure monitor device, the magnetostriction block failure prison
Surveying device includes semiconductor board, monitoring power supply, potentiometer, and the semiconductor board is horizontal positioned and its upper surface and magnetostriction block
Lower surface connection, the upper and lower surfaces connection of the potentiometer and semiconductor board and monitoring semiconductor board upper surface and
Two differences on the side of the voltage of lower surface, the monitoring power supply and semiconductor board connect.When monitoring power supply is partly to lead
When body plate is passed through electric current, since conducting wire and magnetostriction block generate magnetic field jointly, table on semiconductor board is known based on Hall effect
Face and lower surface generate voltage difference, therefore can calculate the magnetic induction intensity on semiconductor board, the method for calculated magnetic induction intensity
Are as follows: set magnetic induction intensity as B, monitoring power supply is that be passed through the current density generated when electric current be j to semiconductor board, and potentiometer measures half
It is U that conductor plate upper and lower surfaces, which generate voltage difference,h, semiconductor board with a thickness of d and Hall coefficient is Rh, then have magnetic induction
Intensity B=Uhd/(Rhj).For mangneto driver, corresponding magnetic induction intensity, method when the failure of magnetostriction block is obtained ahead of time
Are as follows: alternating current is passed through to the coil in mangneto driver in advance, while generating eddy current and temperature gradually in magnetostriction block
Rise, transformation temperature of the magnetostriction block from becoming losing magnetostriction with magnetostriction is recorded in temperature ramp de
Spend T1, in addition record magnetostriction block and just lost corresponding magnetic induction density B when magnetostriction1.In actual vibration pile driving process
In, magnetostriction block failure monitor device can measure magnetic induction density B, just lose when magnetic induction density B reaches magnetostriction block
Go the corresponding magnetic induction density B of magnetostriction1When, then pause pile vibrosinking waits magnetostriction block cooling, when mangneto is stretched
Continue pile sinking after contracting block is cooling.Here the magnetic induction density B and B monitored1It is taken as surveying in an alternating current cycle
The magnetic induction intensity peak value obtained.
Preferably, the material of the magnetostriction block is terbium dysprosium ferrum magnetostriction materials.
Preferably, the magnetostriction block is furnished with radiator, and the mass block has vertically through hole, and the mangneto is stretched
Contracting block has vertically through hole, and the radiator includes sequentially connected tank for coolant, water pump and heat-dissipating pipe, the heat-dissipating pipe
One end is connected with the coolant liquid in tank for coolant and the other end is connected with water pump, after the heat-dissipating pipe passes through the through hole of mass block
It is attached on the side wall of magnetostriction block through hole and radiates；After water pump drives the coolant liquid in tank for coolant to flow into heat-dissipating pipe,
Tank for coolant is flowed back to again.
Preferably, shape-memory alloy wire is laid in the heat-dissipating pipe, the shape-memory alloy wire is round trip shape
Memory effect, is straight line when room temperature, and turning point when heating in straight line is transferred, and turning point divides shape-memory alloy wire
For first part's straight line silk and second part straight line silk, in room temperature, shape-memory alloy wire is linearly and is attached in heat-dissipating pipe
Wall, first part's straight line silk are fixedly connected with heat dissipation inside pipe wall, and second part straight line silk and heat dissipation inside pipe wall are not fixed company
It connects, shape-memory alloy wire plays the role of stirring coolant liquid；When heat-dissipating pipe temperature increases, shape-memory alloy wire is being transferred
Point is transferred, and second part straight line silk goes to heat-dissipating pipe middle part, and then coolant liquid flows through second part straight line silk and by shape
Memory alloy wire cools down, and shape-memory alloy wire becomes straight line i.e. second part straight line silk not only but also transfers to heat-dissipating pipe later
Inner wall, shape-memory alloy wire becomes broken line from straight line and becomes straight line again again in this process, and this process can weigh automatically
Multiple to carry out, such shape-memory alloy wire plays the role of stirring coolant liquid, that is, passes through the turnover repeatedly of shape-memory alloy wire
The heat that coolant liquid takes away heat-dissipating pipe is accelerated in deformation.
Preferably, the water pump is the adjustable water pump of flow velocity, posts thermometer on the through hole inner wall in magnetostriction block,
Flow velocity in water pump can be increased when thermometric temperature increases, to accelerate cooling of the heat-dissipating pipe to magnetostriction block.
Preferably, the tank for coolant is furnished with refrigerating plant, and the refrigerating plant includes sequentially connected cooling unit, salt
Water pump and cooling tube, the cooling unit include brine pit and cool down to the salt water in brine pit, one end of the cooling tube
It is connect with brine pump and the other end is connect with brine pit, the salt water in brine pit is back to after driving inflow cooling tube by brine pump
Brine pit, the cooling tube are inserted into tank for coolant.
Preferably, the cooling tube is furnished with temperature difference electricity generation device, and the temperature difference electricity generation device includes thermo-electric generation unit, cold
Heat transfer plate, hot end heat transfer plate, positive wire, cathode conductor and battery are held, the thermo-electric generation unit is embedded in cold
But on pipe side wall, the thermo-electric generation unit includes sequentially connected first cold end conductive plate, P-type semiconductor column, hot end conduction
Plate, N-type semiconductor column and the second cold end conductive plate, the first cold end conductive plate are connected with positive wire, the second cold end conductive plate and
Cathode conductor connection, positive wire and cathode conductor are all connect with battery, the hot end heat transfer plate and hot end conductive plate
It connects and is contacted with the coolant liquid in tank for coolant, the cold end heat transfer plate is led with the first cold end conductive plate and the second cold end
Battery plate connection and with the saline contacts in cooling tube.The electric current that thermo-electric generation unit generates charges a battery.
A kind of pile sinking process of the vibrohammer of mangneto driving, includes the following steps:
Step 1: sample being taken for vibrohammer, measured in advance magnetostriction block loses magnetic from becoming with magnetostriction
Cause the transition temperature T of retractility1And magnetostriction is just lost based on magnetostriction block failure monitor device record magnetostriction block
Corresponding magnetic induction density B when property1: alternating current is passed through to the coil in mangneto driver in advance, while in magnetostriction block
It generates eddy current and temperature is gradually increasing, magnetostriction block is recorded in temperature ramp de from becoming losing with magnetostriction
Remove the transition temperature T of magnetostriction1, while recording magnetostriction block and just having lost corresponding magnetic induction intensity when magnetostriction
B1, the magnetic induction density B that monitors here1It is taken as the magnetic induction intensity peak value measured in an alternating current cycle；
Step 2: stake is stood on above foundation soil vertically, from bottom to up by stake, fixture, magnetostriction block, semiconductor board,
Mass block links together；
Step 3: starting alternating source makes the working frequency of the alternating current frequency vibrohammer of conducting wire, magnetostriction block
It vertically stretches that mass block is driven to move repeatedly under the alternating magnetic field that alternating current generates, magnetostriction in the process
Block generates exciting force to fixture, so that stake be made to sink in ground；
Step 4: obtaining magnetic induction intensity in real time based on magnetostriction block failure monitor device in vibration processes is B, works as magnetic
Induction B reaches magnetostriction block and has just lost the corresponding magnetic induction density B of magnetostriction1When, pause pile vibrosinking is then
Wait magnetostriction block cooling, continue pile sinking after magnetostriction block is cooling, the magnetic induction density B monitored here and
B1It is taken as the magnetic induction intensity peak value measured in an alternating current cycle.
Preferably, the method based on the magnetic induction intensity on magnetostriction block failure monitor device real-time monitoring semiconductor board
Are as follows: setting the magnetic induction intensity on semiconductor board as B, monitoring power supply is that be passed through the current density generated when electric current be j to semiconductor board,
It is U that potentiometer, which measures semiconductor board upper and lower surfaces and generates voltage difference,h, semiconductor board with a thickness of d and Hall coefficient is
Rh, then have magnetic induction density B=U on semiconductor boardhd/(Rhj)。
Preferably, when the tank for coolant is equipped with refrigerating plant and cooling tube is furnished with temperature difference electricity generation device, thermo-electric generation
The electric current that unit generates charges a battery.
The beneficial effects of the invention are as follows excited frequencies when common vibrohammer being overcome to start to increase to working frequency by zero
The problem for causing ambient environment vibrations excessive because passing through vibration hammer-stake-foundation System resonant frequency in the process is shaken to allow
The excited frequency of dynamic pile monkey is directly entered working frequency, and the present invention provides a kind of vibrohammers of mangneto driving.
Detailed description of the invention
Fig. 1 is primary structure and stake synergistic effect schematic diagram of the invention；
Fig. 2 is the schematic diagram for the vibrohammer that mangneto of the invention drives；
Fig. 3 is radiator schematic diagram of the invention；
Fig. 4 is the schematic diagram of thermo-electric generation unit on cooling tube side wall of the invention；
Fig. 5 is the schematic diagram of temperature difference electricity generation device of the invention；
Fig. 6 is the schematic diagram that the vibrohammer that mangneto of the invention drives is furnished with magnetostriction block failure monitor device；
Fig. 7 is the marmem schematic diagram in heat-dissipating pipe of the invention
1. ground in figure, 2., 3. fixtures, the vibrohammer of 4. mangnetos driving, 5. vertical circulation direction of excitation, 6. mangnetos
Telescopic block, 7. mass blocks, 8. conducting wires, 9. rectification circuits, 10. alternating sources, the vertically communicated hole of 11. mass blocks, 12. mangnetos are stretched
The vertically communicated hole of contracting block, 13. tank for coolants, 14. water pumps, 15. heat-dissipating pipes, 16. coolant liquids, 17. thermometers, 18. coolers
Group, 19. brine pumps, 20. cooling tubes, 21. brine pits, 22. positive wires, 23. cathode conductors, 24. batteries, 25. first is cold
Conductive plate is held, 26.P type semiconductor column, 27. hot end conductive plates, 28.N type semiconductor column, 29. second cold end conductive plates, 30. is cold
But pipe side wall, 31. cold end heat transfer plates, 32. hot end heat transfer plates, 33. semiconductor boards, 34. monitoring power supplys, 35. voltages
Meter, 36. shape-memory alloy wires, 37. first part's straight line silks, 38. second part straight line silks.
Specific embodiment
In order to realize the present invention technological means, character of innovation, reach purpose and effect is easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Such as the vibrohammer 4 that mangneto a kind of in Fig. 1-Fig. 7 drives, including mass block 7 and mangneto driver；The mangneto drives
Dynamic device includes alternating source 10, rectification circuit 9 and magnetostriction apparatus, and the magnetostriction apparatus includes 6 He of magnetostriction block
Conducting wire 8, conducting wire 8 are wound on 6 outside of magnetostriction block, and alternating source 10, rectification circuit 9 and conducting wire 8 are sequentially connected；When in conducting wire 8
The electric current magnetic field that magnetostriction block 6 is subject to when changing change, and the length of magnetostriction block 6 also changes correspondingly at this time；
The mass block 7 and magnetostriction block 6 are sequentially connected from top to bottom；
The mangneto driver is furnished with magnetostriction block failure monitor device, the magnetostriction block failure monitor device packet
Include semiconductor board 33, monitoring power supply 34, potentiometer 35, the semiconductor board 33 is horizontal positioned and its upper surface and magnetostriction block
6 lower surface connection, the potentiometer 35 connect with the upper and lower surfaces of semiconductor board 33 and monitor on semiconductor board 33
The voltage on surface and lower surface, the monitoring power supply 34 are connect with two differences on the side of semiconductor board 33；
The material of the magnetostriction block 6 is that the composite material of the base and doped terbium dysprosium ferrum particle of resin or terbium dysprosium ferrum mangneto are stretched
Compression material；
The magnetostriction block 6 is furnished with radiator, and the mass block 7 has vertically through hole 11, the magnetostriction
Block 6 has vertically through hole 12, and the radiator includes sequentially connected tank for coolant 13, water pump 14 and heat-dissipating pipe 15, institute
The connection of coolant liquid 16 and the other end and water pump 14 stated in 15 one end of heat-dissipating pipe and tank for coolant 13 connect, and the heat-dissipating pipe 15 is worn
It crosses after the through hole 11 of mass block 7 on the side wall for being attached to 6 through hole 12 of magnetostriction block and radiates.Water pump 14 drives coolant liquid
After coolant liquid 16 in case 13 flows into heat-dissipating pipe 15, then flow back to tank for coolant 13；
It is laid with shape-memory alloy wire 36 in the heat-dissipating pipe 15 as shown in Figure 7, the shape-memory alloy wire 36 is
Double process shape-memory effect, is straight line when room temperature, and turning point when heating in straight line is transferred, and turning point is by shape memory
Alloy wire 36 is divided for first part's straight line silk 37 and second part straight line silk 38, and in room temperature, shape-memory alloy wire 36 is linear
Shape and it is attached to 15 inner wall of heat-dissipating pipe, first part's straight line silk 37 is fixedly connected with 15 inner wall of heat-dissipating pipe, second part straight line
Silk 38 is not fixed with 15 inner wall of heat-dissipating pipe to be connect, and shape-memory alloy wire 36 plays the role of stirring coolant liquid；When heat-dissipating pipe 15
Shape-memory alloy wire 36 is transferred in turning point when temperature increases, and the second part straight line silk 38 as shown in Fig. 7 (b) is gone to scattered
15 middle part of heat pipe, then coolant liquid flows through second part straight line silk 38 and shape-memory alloy wire 36 cools down, Zhi Houru
Shape-memory alloy wire 36 shown in Fig. 7 (a) becomes straight line i.e. second part straight line silk 38 not only but also transfers to 15 inner wall of heat-dissipating pipe,
Shape-memory alloy wire 36 becomes broken line from straight line and becomes straight line again again during this, and this process can repeat automatically into
Row, such shape-memory alloy wire 36 play the role of stirring coolant liquid, that is, pass through the turnover repeatedly of shape-memory alloy wire 36
The heat that coolant liquid takes away heat-dissipating pipe 15 is accelerated in deformation；
The water pump 14 is the adjustable water pump of flow velocity, posts thermometer 17 on 12 inner wall of through hole in magnetostriction block 6,
Flow velocity in water pump 14 can be increased when the temperature that thermometer 17 measures increases, to accelerate heat-dissipating pipe 15 to magnetostriction block 6
Cooling；
The tank for coolant 13 is furnished with refrigerating plant, and the refrigerating plant includes sequentially connected cooling unit 18, salt water
Pump 19 and cooling tube 20, the cooling unit 18 is interior to cool down containing brine pit 21 and to the salt water in brine pit 21, the cooling
One end of pipe 20 is connect with brine pump 19 and the other end is connect with brine pit 21, and the salt water in brine pit 21 is driven by brine pump 19
It is back to brine pit 21 after flowing into cooling tube 20, the cooling tube 20 is inserted into the coolant liquid 16 of tank for coolant 13；
The cooling tube 20 is furnished with temperature difference electricity generation device, and the temperature difference electricity generation device includes thermo-electric generation unit, cold end heat
Measure transmission plate 31, hot end heat transfer plate 32, positive wire 22, cathode conductor 23 and battery 24, the thermo-electric generation unit
On cooling tube side wall 30, the thermo-electric generation unit includes sequentially connected first cold end conductive plate 25, P-type semiconductor column
26, hot end conductive plate 27, N-type semiconductor column 28 and the second cold end conductive plate 29, the first cold end conductive plate 25 and positive wire 22
Connection, the second cold end conductive plate 29 and cathode conductor 23 connect, and positive wire 22 and cathode conductor 23 are all connect with battery 24,
The hot end heat transfer plate 32 is connected and is contacted with the coolant liquid 16 in tank for coolant 13, the cold end with hot end conductive plate 27
Heat transfer plate 31 connect with the first cold end conductive plate 25 and the second cold end conductive plate 29 and with the saline contacts in cooling tube 20；
The electric current that thermo-electric generation unit generates charges to battery 24.
A kind of pile sinking process of the vibrohammer of mangneto driving, includes the following steps:
Step 1: sample being taken for vibrohammer 4, measured in advance magnetostriction block 6 with magnetostriction from becoming losing
The transition temperature T of magnetostriction1And mangneto is just lost based on magnetostriction block failure monitor device record magnetostriction block 6
Corresponding magnetic induction density B when retractility1: alternating current, while mangneto are passed through to 8 coil of conducting wire in mangneto driver in advance
Eddy current is generated in telescopic block 6 and temperature is gradually increasing, and magnetostriction block 6 is recorded in temperature ramp de by stretching with mangneto
Contracting becomes losing the transition temperature T of magnetostriction1, while recording when magnetostriction block 6 has just lost magnetostriction and corresponding to
Magnetic induction density B1；
Step 2: stake 2 is stood on vertically above 1 soil layer of ground, from bottom to up by stake 2, fixture 3, magnetostriction block 6, partly lead
Body plate 33, mass block 7 link together；
Step 3: starting alternating source 10 makes the work of the alternating current frequency vibrohammer 4 of conducting wire 8 by rectification circuit 9
Working frequency, magnetostriction block 6 vertically stretch that mass block 7 is driven to transport under the alternating magnetic field that alternating current generates repeatedly
Dynamic, magnetostriction block 6 generates exciting force to fixture 3 in the process, and vertically circulation swashs as shown in Figure 1 in this exciting force direction
Shake direction 5, so that stake 2 be made to sink in ground 1；
Step 4: obtaining magnetic induction intensity in real time based on magnetostriction block failure monitor device in vibration processes is B, works as magnetic
Induction B reaches magnetostriction block 6 and has just lost the corresponding magnetic induction density B of magnetostriction1When, pause pile vibrosinking 2 is right
It waits magnetostriction block 6 cooling afterwards, continues pile sinking 2 after magnetostriction block 6 is cooling；
During pile vibrosinking 2, the electric current that thermo-electric generation unit generates charges to battery 24.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811145564.9A CN109137911B (en) | 2018-09-29 | 2018-09-29 | Magnetically driven vibratory pile hammer and pile sinking method |
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| CN201811145564.9A CN109137911B (en) | 2018-09-29 | 2018-09-29 | Magnetically driven vibratory pile hammer and pile sinking method |
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| CN109137911B CN109137911B (en) | 2020-09-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409442A (en) * | 2019-07-30 | 2019-11-05 | 浙江科技学院 | A pile sinking method based on shape memory alloy to reduce the impact of vibration |
| CN110409443A (en) * | 2019-07-30 | 2019-11-05 | 浙江科技学院 | Vibrating pile hammer and pile sinking method based on radiation deformation to reduce vibration influence |
| CN110438992A (en) * | 2019-07-30 | 2019-11-12 | 浙江科技学院 | Deformation capsule, which is converted, based on mushy stage reduces the pile vibrosinking method that vibration influences |
| WO2025133106A1 (en) * | 2023-12-21 | 2025-06-26 | Dieseko Group B.V. | Vibratory foundation apparatus with linear electromagnetic actuator |
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| CN110409442B (en) * | 2019-07-30 | 2021-05-11 | 浙江科技学院 | Pile sinking method for reducing vibration influence based on shape memory alloy |
| WO2025133106A1 (en) * | 2023-12-21 | 2025-06-26 | Dieseko Group B.V. | Vibratory foundation apparatus with linear electromagnetic actuator |
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