CN102518116B - Electromagnetic tamper - Google Patents
Electromagnetic tamper Download PDFInfo
- Publication number
- CN102518116B CN102518116B CN2011104057768A CN201110405776A CN102518116B CN 102518116 B CN102518116 B CN 102518116B CN 2011104057768 A CN2011104057768 A CN 2011104057768A CN 201110405776 A CN201110405776 A CN 201110405776A CN 102518116 B CN102518116 B CN 102518116B
- Authority
- CN
- China
- Prior art keywords
- electromagnet
- electromagnetic
- rammer
- travel switch
- current
- 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
Links
Images
Abstract
The invention relates to an electromagnetic tamper, which comprises a housing, a plate pressing body, an electromagnet, a travel switch and a trolley, wherein the plate pressing body consists of four pressure bars connected with a middle flat panel and a pressure head, metal guide rails are arranged on the four pressure bars and can be used as wires for supplying power for a middle electromagnet; a top electromagnet is welded below a top cover and the middle electromagnet is arranged between the middle flat panel and a pallet; a bottom electromagnet is welded at the bottom of a housing tube; the travel switch is arranged on the internal wall of the housing tube and a hole is formed in the wall of the housing tube so that wires can be led out and connected to a power supply controller; and the housing tube is fixedly connected with a trolley through a connecting flange on a metal connecting sleeve. Direct current is applied to the top electromagnet and the bottom electromagnet and alternating square wave current is applied to the middle electromagnet. According to the invention, three electromagnets combined with the travel switch are used for the downward tamping action and the upward retracting action of the tamper based on the electromagnet principle that same electric charges mutually repulse and opposite electric charges attract. The electromagnetic tamper disclosed by the invention has the characteristics of a simple structure, easy control, good expansibility and capabilities of implementing the vibration tamping and impaction tamping function and adjusting the impaction frequency and the vibration amplitude.
Description
Technical field
The present invention relates to a kind of electromagnetic rammer-compactor, a kind of electromagnet two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes utilized specifically, adopt three blocks of electromagnet complete the rammer compacter undershoot and last time process, realize the electromagnetic rammer-compactor of vibrations compacting, shock ramming effect.
Background technology
In recent years, China's Foundation Design is built high speed development.But a ubiquitous problem is at present: because the ground discontinuity produces the ground collapse problem.One of a kind of effective way addressed this problem strengthens compactness and the bearing strength on ground by the compacting of special mechanical equipment exactly, reduces the settlement amount after construction banketed.At present, traditional tamping apparatus is also various, but is substantially all large heavy-duty machinery, heavy and often need to support the use with main equipment, and cost is higher.And the method for compacting foundation generally has three kinds: compacting, jolt ramming and roll reality.Mostly be the mechanical eccentric formula in the tradition compacting method, its power consumption is large, bulky, moves un-skill, function singleness, the compacting frequency is not high enough, and efficiency is low, as the Small-scale Flat rammer compacter employing mechanical eccentric formula of frequent use, during because of its eccentric cylinder rotation, eccentric force is larger, so equipment failure rate is high, need often to change eccentric cylinder, and compaction effort is little.Domestic a kind of vertical column type electromagnetic rammer-compactor also disclosed, also has flat-board type electromagnetic vibration compaction machine on market, adopt the electro-magnetic exciting force of electromagnetic actuator to drive, change the amplitude of rammer compacter by regulating spring rigidity or adjusting supply frequency, to reach the optimum efficiency of compacting.Its weak point is that this rammer compacter has adopted in the middle of electromagnet and plane bottom plate and is provided with spring, therefore be subject to the reaction force of spring when electromagnet adds the electric attraction plane bottom plate, increased energy consumption; While powering up due to electromagnet, attraction reduces along with distance increases simultaneously, thus limited it and base plane base plate spacing less, the inertia that electromagnet outage back plane base plate is obtained by spring tension under less distance is also less, therefore its percussion is less; In the middle of electromagnet and plane bottom plate, spring is set, plane floor is actually the elastic force of spring to the compacting power of soft terrain, so want to change maximum compacting power, just must change spring.
Summary of the invention
The objective of the invention is the inconvenience and the drawback that exist in prior art for solving, and provide a kind of, both can realize that the vibrations compacting can realize shock ramming, have simple in structure, easy to control, the electromagnetic rammer-compactor that frequency of impact and vibration amplitude are adjustable.
For achieving the above object, the technical solution used in the present invention is: a kind of electromagnetic rammer-compactor is provided, comprise casing, pressing plate body, electromagnet, travel switch and dolly, described casing is comprised of top cover and outer thimble, the bottom of outer thimble is provided with the end of a circular groove, and outer thimble inwall is fixed with pilot hole; Described pressing plate body is comprised of middle square position, pressure head and four depression bars, square position and pressure head in the middle of four depression bars connect, and pressure head is at the pressing plate body bottom; Described electromagnet is comprised of top electromagnet, middle electromagnet and bottom electromagnet, and described top electromagnet is fixed under top cover, and middle electromagnet is arranged between the middle square position and pallet of pressing plate body, and is fixed under middle square position; Bottom electromagnet is welded on outer thimble bottom by sleeve flange to be had at the end of circular groove; Outer thimble inwall is provided with travel switch; Be provided with metal guide rail on the bar of four depression bars corresponding moving range in pilot hole, metal guide rail also plays wire and act as middle electromagnet power supply; Have aperture on the shell barrel and be used for drawing electrified wire, outer thimble outside is provided with the metal adapter sleeve, the flange of the adpting flange by metal adapter sleeve end and the dolly joint pin end of dolly front end is fixed together, and the power-supply controller of electric of controlling the rammer compacter operation is installed on described dolly.
Described four depression bars that connect middle square position and pressure head of electromagnetic rammer-compactor of the present invention intert in the pilot hole that is arranged on outer thimble inwall.Four depression bars in described pilot hole are provided with metal guide rail on the bar of corresponding moving range, and metal guide rail consists of internal insulating layer and external conductive medium.
The described travel switch of electromagnetic rammer-compactor of the present invention is arranged on the place, nearly two ends in the moving range of the middle square position of outer thimble inwall correspondence, the electrical current direction of the moving range of electromagnet and the middle electromagnet of change in the middle of limiting by travel switch.
The electric current be communicated with in electromagnetic rammer-compactor of the present invention described top electromagnet and bottom electromagnet is direct current, and electromagnet top, top is the S utmost point, and bottom is the N utmost point; The top of bottom electromagnet is the N utmost point, and bottom is the S utmost point; What in middle electromagnet, be communicated with is to vary in size and the square wave current of direction alternation.
The size of current difference be communicated with in electromagnet in the middle of electromagnetic rammer-compactor of the present invention is described and the square wave of direction alternation are that positive current is large, the time is short, the square wave current that negative current is little, the time is long.
The course of work of electromagnetic rammer-compactor of the present invention is to utilize electromagnet two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes, adopt three blocks of electromagnet in conjunction with travel switch complete the rammer compacter undershoot and last time process: in middle electromagnet moves up and down process, in top and bottom electromagnet, the size and Orientation of electrical current is constant, pass into constant dc, electromagnet top, top is the S utmost point, and bottom is the N utmost point; The top of bottom electromagnet is the N utmost point, and bottom is the S utmost point.The positive and negative alternation square wave current of middle electromagnet input through amplifying, middle electromagnet touches the galvanization generation of upper run switch time institute magnetic on casing top is that top is the N utmost point, bottom is the S utmost point, according to the electromagnet two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes, use scold and the double action of lower suction make in the middle of electromagnet with peak acceleration and impact force, move downward.In like manner, middle electromagnet touches the galvanization generation of lower run switch time institute magnetic in the casing bottom is that top is the S utmost point, and bottom is the N utmost point, according to the electromagnet two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes, use inhale and under the double action of scolding make in the middle of electromagnet get back to upper.The positive and negative variation of square wave current that middle electromagnet passes into is that the signal spread out of according to the different travel switches in upper and lower part is provided by power-supply controller of electric.When in the middle of in the course of work, electromagnet descends, current amplitude is large, the time is short, and pressure head while rising little, time length of current amplitude be in order to reach the plunge effect of slow liter of pressure head.The slow liter of plunging can make the electromagnetic type rammer compacter obtain larger undershoot impact force and last time stably.Can change himself frequency of impact or vibration frequency by the electrical current amplitude of electromagnet in the middle of regulating, the vibrations of middle electromagnet or impact amplitude can realize by changing its energising square wave.
Electromagnetic type rammer compacter vibration tamp of the present invention can be realized by the distance of dwindling between travel switch, can also realize by the positive and negative alternating frequency of electromagnet power supply in the middle of changing.
Electromagnetic type rammer compacter of the present invention compared with prior art has the following advantages:
1, ingenious electromagnet two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes utilized of the present invention, the signal that adopts three blocks of electromagnet of upper, middle and lower to provide in conjunction with travel switch, complete the rammer compacter undershoot and last time process, the undershoot stage use scold and the double action of lower suction make in the middle of electromagnet reach peak acceleration and impact force, stage last time adjust under suitable electric current use inhale and under the double action of scolding make in the middle of electromagnet get back to upper, middle electromagnet motion and then band dynamic pressure plate move up and down in overall, and realize compacting.
2, rammer compacter of the present invention does not use the structure of spring, energy saving, and efficiency is high, adopts electromagnetic force to drive, and use the present invention can be to environment.
3, rammer compacter of the present invention is simple in structure, easy to control, not only the vibrations compacting can be realized but also shock ramming can be realized, there are the adjustable characteristics of frequency of impact and vibration amplitude, this rammer compacter structure also can be applicable to other field or equipment through transformation, such as catalase or impact drilling etc., there is very strong expansion.
The accompanying drawing explanation
Fig. 1 is electromagnetic rammer-compactor surface structure schematic diagram of the present invention.
Fig. 2 is that schematic diagram is partly cutd open in electromagnetic rammer-compactor general assembly of the present invention.
Fig. 3 is electromagnetic rammer-compactor top component assembling schematic diagram of the present invention.
Fig. 4 is the outer thimble of electromagnetic rammer-compactor of the present invention and bottom electromagnet assembling schematic diagram.
Fig. 5 is electromagnetic rammer-compactor intermediary movements parts assembling schematic diagram of the present invention.
Fig. 6 is electromagnetic rammer-compactor pressure head structure schematic diagram of the present invention.
Fig. 7 is that in the middle of the present invention, electromagnet passes into the square wave current schematic diagram.
In above-mentioned figure: electromagnet, 12-bottom electromagnet, 13-top annular groove, 14 pilot holes, 15-bottom circular groove, 16-strut kong, the middle square position of 17-, 18-pallet, 19-metal guide rail, 20-bolt, 21-depression bar pilot hole, 22-travel switch, 23-power-supply controller of electric in the middle of 1-top cover, the outer thimble of 2-, 3-metal adapter sleeve, 4-depression bar, 5-pressure head, 6 adpting flanges, 7-dolly joint pin, 8-dolly, 9-handle, 10-top electromagnet, 11-.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment 1: a kind of electromagnetic rammer-compactor structure of the present invention as shown in Figure 1, 2, comprises casing, pressing plate body, electromagnet, travel switch and dolly, and described casing is comprised of top cover 1 and outer thimble 2, at the bottom of the lower end of outer thimble is provided with a circular groove; Outer thimble inwall is provided with pilot hole 14; Described pressing plate body is comprised of middle square position 17, pressure head 5 and four depression bars 4, square position 17 and pressure head 5 in the middle of four depression bars 4 connect, and pressure head is at the pressing plate body bottom; Described electromagnet is comprised of top electromagnet 10, middle electromagnet 11 and bottom electromagnet 12 referring to Fig. 2; Top component assembling of the present invention is referring to Fig. 3, and described top electromagnet is welded on the top annular groove 13 of top cover 1; Bottom electromagnet is welded on 15 li of bottom, outer thimble lower end circular grooves by sleeve flange, also is provided with strut kong 16, referring to Fig. 4 at the end of the circular groove of outer thimble bottom; Middle electromagnet is fixed on the middle square position 17 times of pressing plate body; Place, nearly two ends in the middle of outer thimble inwall correspondence in 17 movings range of square position is provided with travel switch 22, the electrical current direction of electromagnet in the middle of the moving range of electromagnet and change in the middle of limiting by travel switch; Four depression bars 4 are provided with metal guide rail 19 on the bar of pilot hole 14 interior corresponding movings range, and metal guide rail plays the wire effect simultaneously, for middle electromagnet provides electric power; Outer thimble outer cover has metal adapter sleeve 3, adpting flange 6 by metal adapter sleeve 3 ends is fixed together with the flange of dolly joint pin 7 ends of dolly front end, have the electrified wire that aperture is used for drawing electromagnet and travel switch on outer thimble 2 walls, described electrified wire is connected on the controller 23 of installing on dolly 8.
Referring to Fig. 5, middle electromagnet is arranged between the middle square position 17 and pallet 18 of pressing plate body, and middle electromagnet lower end is fixed on pallet 18 by bolt 20; Square positions 17 in the middle of four depression bars, 4 tops connect, intert in pilot hole 14 at middle part, is provided with 19, four depression bar lower ends of metal guide rail through the strut kong 16 of outer thimble bottom at the middle part of four depression bars 4 and in being arranged on the depression bar pilot hole 21 of pressure head 5; Referring to Fig. 6.
Embodiment 2: the assembling process of a kind of electromagnetic rammer-compactor of the present invention is:
(1) electromagnet assembling: with sleeve, iron core and two electromagnet of coil assembling, first winding around on sleeve, then iron core is inserted in the sleeve with coil, iron core and sleeve interference fit, for top electromagnet and bottom electromagnet; Magnet spool in the middle of being wound around with sleeve again, iron core by interference fit, pack in the middle of in the sleeve of electromagnet; Middle electromagnet bottom adopts four and is bolted on pallet.
(2) the shell wound packages is joined: first with the rounded bottom groove at the bottom of a bottom electromagnet assembled and outer thimble, adopt welding manner to be connected; The middle electromagnet that then will assemble is assembled in outer thimble, and wherein four depression bars connect along four fixing pilot holes 14 in outer thimble respectively, form vertical moving sets, and then through strut kong 16; Then travel switch is arranged on to the place, nearly two ends in the moving range of the middle square position of outer thimble inwall correspondence.
(3) pressure head assembling: four depression bar pilot holes 21 on pressure head 5 are connected with four depression bars respectively, fixedly pressure head.
(4) winding wire of top, centre and bottom electromagnet is guided on the power-supply controller of electric of dolly 8 by outer thimble 2 walls, having aperture.Finally the welding of the annular groove of remaining top electromagnet and top cover 1 is connected, then they are covered to thimble top outside as an overall package.
(5) metal adapter sleeve 3 is enclosed within on outer thimble 2.
(6) dolly assembling: dolly 8 main bodys, dolly joint pin 7, handle 9, axle, four wheels and power-supply controller of electric 23 are installed.
(7) overall assembling: adopt bolt and packing ring and nut at four articulation holes, adpting flange 6 machineries of the flange of dolly joint pin 7 front ends and metal adapter sleeve end to be connected, connect all wires, and do the inspection after integral installation.Complete the assembling of electromagnetic rammer-compactor.
Embodiment 3: the course of work of electromagnetic rammer-compactor of the present invention is: when controller is not powered, middle electromagnet is due to gravity bottom in casing, now with the lower run switch, contact, after controller powers on, pass into direct current in top electromagnet and bottom electromagnet, electromagnet top, top is the S utmost point, and bottom is the N utmost point; The top of bottom electromagnet is the N utmost point, and bottom is the S utmost point; The signal transmitted according to travel switch, controller can be middle electromagnet power supply, in the middle of making, electromagnet top is the S utmost point, bottom is the N utmost point, so just there will be the top electromagnet to give middle electromagnet suction, the bottom electromagnet situation to middle electromagnet repulsion, electromagnet last time in the middle of impelling, owing to now giving the electric current of middle electromagnet little, the time is long, so last time is slower.When middle electromagnet rising touches the upper run switch on casing, the signal that controller transmits according to travel switch, in the middle of changing the supplier of electricity of electromagnet to and size of current, in the middle of making, electromagnet top is the N utmost point, bottom is the S utmost point, so just there will be the top electromagnet to give middle electromagnet repulsion, the bottom electromagnet situation to middle electromagnet suction, in the middle of adding now, the supply current amplitude of electromagnet is larger, so middle electromagnet is undershoot rapidly, so just completed the undershoot Ramming operation of one bout.
Pass into direct current in top of the present invention electromagnet and bottom electromagnet, electromagnet top, top is the S utmost point, and bottom is the N utmost point; The top of bottom electromagnet is the N utmost point, and bottom is the S utmost point; The electric current be communicated with in middle electromagnet is to vary in size and the square wave of direction alternation.The size of current difference be communicated with in electromagnet in the middle of described and the square wave of direction alternation are that positive current is large, the time is short, and negative current is little, the time is long, referring to Fig. 7.Square wave current size and Orientation alternation be for realize the rammer compacter undershoot and last time process and the acquisition slow requirement risen that plunges.The positive current in undershoot stage is large, the time is short, on scold and the double action of lower suction make in the middle of electromagnet reach peak acceleration and impact force, stage last time negative current is little, the time is long, upper suction and under the double action of scolding make in the middle of electromagnet get back to upper, middle electromagnet motion and then band dynamic pressure plate move up and down in overall, and realize compacting.
Electromagnetic rammer-compactor of the present invention utilizes electromagnet two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes, adopt three blocks of electromagnet in conjunction with travel switch complete the rammer compacter undershoot and last time process, realize vibrations, the compacting effect of impacting.This rammer compacter is simple in structure, easy to control, can realize that the vibrations compacting can realize shock ramming again, there are the adjustable characteristics of frequency of impact and vibration amplitude, can be widely used in strengthening the compactness on ground and the occasion of bearing strength by compacting in infrastructure, be particularly suitable for the engineering construction field of the narrow workplace with requiring to tamp fast of the scope of operation.The present invention can be applicable to other field or equipment through the transformation of structure, such as catalase or impact drilling etc., has very strong expansion.
Claims (2)
1. an electromagnetic rammer-compactor, comprise casing, pressing plate body, electromagnet, travel switch and dolly, it is characterized in that: described casing is comprised of top cover and outer thimble, and the bottom of outer thimble is provided with the end of a circular groove, and outer thimble inwall is fixed with pilot hole; Described pressing plate body is comprised of middle square position, pressure head and four depression bars, square position and pressure head in the middle of four depression bars connect, and pressure head is at the pressing plate body bottom; Described electromagnet is comprised of top electromagnet, middle electromagnet and bottom electromagnet, and described top electromagnet is fixed under top cover, and middle electromagnet is arranged between the middle square position and pallet of pressing plate body, and is fixed under middle square position; Bottom electromagnet is welded on outer thimble bottom by sleeve flange to be had at the end of circular groove; Outer thimble inwall is provided with travel switch; Described travel switch is arranged on the two ends in the moving range of the middle square position of outer thimble inwall correspondence, the electrical current direction of electromagnet in the middle of the moving range of electromagnet and change in the middle of limiting by travel switch; Be provided with metal guide rail on the bar of four depression bars corresponding moving range in pilot hole, metal guide rail also plays wire and act as middle electromagnet power supply; Have aperture on the shell barrel and be used for drawing electrified wire, outer thimble outside is provided with the metal adapter sleeve, the flange of the adpting flange by metal adapter sleeve end and the dolly joint pin end of dolly front end is fixed together, and the power-supply controller of electric of controlling the rammer compacter operation is installed on described dolly.
2. a kind of electromagnetic rammer-compactor according to claim 1 is characterized in that: in the middle of described the connection, four depression bars of square position and pressure head intert in the pilot hole that is arranged on outer thimble inwall.
3. a kind of electromagnetic rammer-compactor according to claim 2 is characterized in that: four depression bars in described pilot hole are provided with metal guide rail on the bar of corresponding moving range, and metal guide rail consists of internal insulating layer and external conductive medium.
4. a kind of electromagnetic rammer-compactor according to claim 1, it is characterized in that: the electric current be communicated with in described top electromagnet and bottom electromagnet is direct current, and electromagnet top, top is the S utmost point, and bottom is the N utmost point; The top of bottom electromagnet is the N utmost point, and bottom is the S utmost point; What in middle electromagnet, be communicated with is to vary in size and the square wave current of direction alternation.
5. a kind of electromagnetic rammer-compactor according to claim 4 is characterized in that: the different and square wave direction alternation of the size of current be communicated with in electromagnet in the middle of described is that positive current is large, the time is short, the square wave current that negative current is little, the time is grown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104057768A CN102518116B (en) | 2011-12-08 | 2011-12-08 | Electromagnetic tamper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104057768A CN102518116B (en) | 2011-12-08 | 2011-12-08 | Electromagnetic tamper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102518116A CN102518116A (en) | 2012-06-27 |
| CN102518116B true CN102518116B (en) | 2013-12-11 |
Family
ID=46289160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104057768A Expired - Fee Related CN102518116B (en) | 2011-12-08 | 2011-12-08 | Electromagnetic tamper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102518116B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759233B (en) * | 2016-11-21 | 2018-11-16 | 浙江鼎大环境科技有限公司 | A kind of environment-protection type floor tamping unit |
| CN106868991A (en) * | 2017-03-02 | 2017-06-20 | 李爱冰 | A kind of electromagnetic type rammer compacter |
| CN112223807A (en) * | 2020-09-15 | 2021-01-15 | 李冉冉 | Electromagnetic tamper for raw material compaction |
| CN112482349A (en) * | 2020-12-25 | 2021-03-12 | 浙江吉祥建设集团有限公司 | High-rise foundation construction is with according to soil reaction force compaction equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4211284C1 (en) * | 1992-04-03 | 1993-09-30 | Delmag Maschinenfabrik | Electronically controlled ground compactor - uses displacement of steering mass in axial direction of vibrator imbalance weights |
| CN2848940Y (en) * | 2005-12-21 | 2006-12-20 | 舒成 | Linear electric impact ram |
| EP1980671A2 (en) * | 2007-04-12 | 2008-10-15 | Ammann Verdichtung GmbH | Soil compacting device in form of a vibration plate |
| CN201678995U (en) * | 2010-03-17 | 2010-12-22 | 黄道兴 | Electromagnetic vibration rammer |
-
2011
- 2011-12-08 CN CN2011104057768A patent/CN102518116B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4211284C1 (en) * | 1992-04-03 | 1993-09-30 | Delmag Maschinenfabrik | Electronically controlled ground compactor - uses displacement of steering mass in axial direction of vibrator imbalance weights |
| CN2848940Y (en) * | 2005-12-21 | 2006-12-20 | 舒成 | Linear electric impact ram |
| EP1980671A2 (en) * | 2007-04-12 | 2008-10-15 | Ammann Verdichtung GmbH | Soil compacting device in form of a vibration plate |
| CN201678995U (en) * | 2010-03-17 | 2010-12-22 | 黄道兴 | Electromagnetic vibration rammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102518116A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102518116B (en) | Electromagnetic tamper | |
| CN102349222B (en) | Electrodynamic linear oscillating motor | |
| CN103557264B (en) | Based on the passive magnetorheological vibration damper of status monitoring | |
| CN201547167U (en) | Generating shock absorber | |
| CN101944821B (en) | Permanent-magnet damping linear generator | |
| CN203082102U (en) | Electromagnetic type energy feedback shock absorber based on Halbach permanent magnet array | |
| CN105570367B (en) | A kind of magnet spring and there are its linear electric motors and compressor | |
| CN107359826A (en) | A kind of four side synchronous hunting double mode wideband TRTs | |
| CN103557265B (en) | Dual-frequency resonance driving vibration absorber small in mass and low in power consumption | |
| CN107707153A (en) | A kind of magnetic force auxiliary bistable state piezoelectric harvester based on cylinder flow-disturbing effect | |
| CN107769612B (en) | A kind of raising frequency piezoelectricity-Electromagnetic heating power generator under vortex street excitation | |
| CN200978415Y (en) | Straight line electric shocking rammer | |
| CN101196003B (en) | Straight line electric impact punner | |
| CN106121951B (en) | A kind of reciprocating pump of electromagnetic power | |
| CN201118419Y (en) | Electromagnetic vibration impact machine for line vibration electromotor | |
| CN201041980Y (en) | Permanent magnetic machine | |
| CN2692656Y (en) | Reciprocating impact type high-frequency vibration exciter | |
| CN202667523U (en) | Forging hammer | |
| CN202150814U (en) | Electromagnetic field motor | |
| CN206789498U (en) | A kind of electrical engineering contactless contactor | |
| CN206677543U (en) | A kind of hybrid power automobile power assembly assembles device | |
| CN110761269B (en) | Electromagnetic type rammer for indoor foundation | |
| CN220527850U (en) | Linear oscillating motor | |
| CN102649313A (en) | Vibration head used for vibration friction welding machine | |
| CN201038975Y (en) | Permanent magnetic engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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: 20131211 Termination date: 20161208 |