CN102979076A - Tire type dynamic compaction machine - Google Patents
Tire type dynamic compaction machine Download PDFInfo
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- CN102979076A CN102979076A CN201210477375.8A CN201210477375A CN102979076A CN 102979076 A CN102979076 A CN 102979076A CN 201210477375 A CN201210477375 A CN 201210477375A CN 102979076 A CN102979076 A CN 102979076A
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- dynamic compaction
- vehicle frame
- compaction machinery
- tyred
- support cylinder
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- 238000005056 compaction Methods 0.000 title claims abstract description 75
- 230000007246 mechanism Effects 0.000 claims abstract description 86
- 239000003921 oil Substances 0.000 claims description 32
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009705 shock consolidation Methods 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 241000219098 Parthenocissus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The invention provides a tire type dynamic compaction machine, comprising a car frame, an arm frame, a traveling mechanism, a lifting mechanism, and an amplitude variation mechanism, wherein the car frame comprises an upper car frame and a lower car frame; the arm frame is hinged with the upper frame; the upper frame is connected with the lower frame; and the traveling mechanism is connected with the lower car frame. The tire type dynamic compaction machine is characterized in that the traveling mechanism uses a tire type wheel bearing, driving and steering traveling mechanism; a supporting mechanism is further arranged on the car frame; and the supporting mechanism is used for supporting the dynamic compaction machine in dynamic compaction operation. The tire type dynamic compaction machine provided by the invention has the advantages of simple structure, low manufacturing cost, high efficiency and good security.
Description
Technical field
The present invention relates to technical field of engineering machinery, in particular to a kind of rubber-tyred dynamic compaction machinery.
Background technology
Dynamic compaction machinery is a kind ofly it freely to be fallen after hammer ram is hung larger height, gives material or ground with strong impact force and vibration, thus the engineering machinery that material or ground are carried out shock compaction.
At present, dynamic compaction machinery is to convert on the crawler crane basis, and the most large section of most of dynamic compaction machinery adopts crawler type walking mechanism in the chassis, adopts and rotation supporting structure.Because of dynamic compaction machinery in operation process, because hammer ram freely falls from the high-altitude, give ground with strong impact force and vibration.Cause and exist so that creeper undercarriage and rotation supporting structure bear strong impact force and vibration, very easily cause tumbling of dynamic compaction machinery, thereby cause the damage of dynamic compaction machinery chassis part, leakage of oil and life security, crawler type walking mechanism is in transportation, transhipment, steering operation process simultaneously, operating efficiency is low, and the cost height is not suitable with the strong rammer operation.
In addition, general dynamic compaction machinery all is equipped with driver's cabin, and travelling with operation control mainly is that the staff finishes in driver's cabin.Because the Active workings of dynamic compaction machinery is comparatively abominable, noise and vibration are large when ramming, operator is the working environment extreme difference in driver's cabin, and what rammer unhooking was transferred can produce in a flash great reaction force on main frame, very easily cause tumbling of dynamic compaction machinery, serious threat is to operator and ground handling personnel's life security.
Be widely used winding lifting mechanism and elevator jib lubbing mechanism in the dynamic consolidation construction process, winding lifting mechanism and elevator jib lubbing mechanism form by motor or motor, reductor with the reel of clutch, in speed end or reel one side brake are set.Complex structure, cost are high, hoisting velocity is slow, strong rammer efficient is low.And in the dynamic consolidation construction process, impact frequently just being easy to cause the inefficacy of winding lifting mechanism and elevator jib lubbing mechanism and the fatigue failure of wire rope.
At present, the shortcomings such as dynamic compaction machinery exists that cost is high, strong rammer efficient is low, poor stability, practical efficient is low, maintenance cost is high, operating flexibility, transportation and steering behaviour are poor can not adapt to high-intensity strong rammer job requirements.
Summary of the invention
The purpose of this invention is to provide a kind of rubber-tyred dynamic compaction machinery, this dynamic compaction machinery is simple in structure, and low cost of manufacture, high efficiency, safety are good.
In order one of to solve the problems of the technologies described above, a kind of rubber-tyred dynamic compaction machinery provided by the invention, comprise: vehicle frame, jib, walking mechanism, lifting mechanism, jib lubbing mechanism, described vehicle frame comprises vehicle frame and lower vehicle frame, described jib and described upper vehicle frame are hinged, described upper vehicle frame is connected with described lower vehicle frame, described walking mechanism is connected with described lower vehicle frame, the walking mechanism of described walking mechanism for adopting tyre type wheel to carry, drive, turn to, supporting mechanism also is set on the described vehicle frame, supports dynamic compaction machinery when described supporting mechanism is used for the strong rammer operation.
Further, described walking mechanism comprises: drive axle, steeraxle, steering hydraulic oil cylinder, hydraulic motor, the described steeraxle of described steering hydraulic hydraulic oil cylinder driving turns to, the described drive axle walking of described fluid motor-driven.
Further, described walking mechanism comprises: control valve group, at least four wheels, each described wheel correspondence are provided with a hydraulic motor, the described wheel walking of described fluid motor-driven, described control valve group is used for the flow of each described hydraulic motor of control, when dynamic compaction machinery turn left to the time, described control valve group stops described to the left hydraulic motor fuel feeding, when dynamic compaction machinery turn right to the time, described control valve group stops to the right described hydraulic motor fuel feeding.
Further, described walking mechanism comprises: control valve group, at least four wheels, each described wheel correspondence are provided with a hydraulic motor, the described wheel walking of described fluid motor-driven, described control valve group is used for the flow of each described hydraulic motor of control, when dynamic compaction machinery turn left to the time, the flow that the flow that the described to the left hydraulic motor of described control valve group is supplied with is supplied with less than the described hydraulic motor in right side, when dynamic compaction machinery turn right to the time, described control valve group is the flow supplied with less than the described hydraulic motor in left side of described hydraulic motor fuel feeding to the right.
Further, described lifting mechanism comprises lift oil tank and assembly pulley, and described lift oil tank and described assembly pulley are installed on the described jib, and the action of lift oil tank drive pulley group realizes the hammer ram lifting.
Further, described jib lubbing mechanism comprises amplitude oil cylinder, and described amplitude oil cylinder is installed between described upper vehicle frame and the described jib, drives described jib and swings.
Further, be fixedly connected with between described upper vehicle frame and the described lower vehicle frame, described supporting mechanism comprises at least two support cylinders, and described support cylinder is installed in respectively on the described lower vehicle frame.
Further, described upper vehicle frame can rotate relatively with described lower vehicle frame, and described supporting mechanism comprises at least two support cylinders, and described support cylinder is installed in respectively on the described upper vehicle frame.
Further, described supporting mechanism comprises four support cylinders, and described support cylinder is installed in respectively on four orientation all around of described upper vehicle frame.
Further, in the oil-feed oil circuit of described support cylinder, be provided with hydraulic accumulator and control valve, in oil return circuit, be provided with throttling arrangement; When described support cylinder was hit power, described control valve was controlled described support cylinder and is communicated with fuel tank by described throttling arrangement; When described support cylinder did not stress, described control valve was controlled described hydraulic accumulator to described support cylinder repairing.
Further, in the oil-feed oil circuit of described support cylinder, be provided with hydraulic accumulator and one way valve, in oil return circuit, be provided with overflow valve; When described support cylinder is hit power, the hydraulic oil of described support cylinder by described overflow valve off-load to described hydraulic accumulator; When described support cylinder does not stress, described hydraulic accumulator by described one way valve to described support cylinder repairing.
Further, the remote control that also comprises the work of remote control dynamic compaction machinery, described remote control comprises described remote control transmitter, described receiver of remote-control sytem, described controller, described remote control transmitter transmitted radio signal, after described receiver of remote-control sytem receives radio signals, control at least one work in described lifting mechanism, described jib lubbing mechanism, described walking mechanism, described jib, the described supporting mechanism by described controller.
Further, jib comprises two joint arms at least, and first segment arm head end and upper vehicle frame are hinged, and the first segment arm is terminal hinged with the second section arm, and the hinge axes of first segment arm end is vertical with the hinge axes of its head end.
Rubber-tyred dynamic compaction machinery beneficial effect of the present invention is: 1, simple in structure, low cost of manufacture, 2, adopt and also to be provided with four supporting mechanisms that are used for supporting dynamic compaction machinery on rubber-tyred walking mechanism and the lower vehicle frame, transport, transport, turn to, the performances such as operational stability, safety are better than existing dynamic compaction machinery.3, adopt remote control, reduced driver's cabin, simplify the structure, reduced manufacturing cost, improved the safety operation performance.4, adopt novel lifting mechanism, lift oil tank and assembly pulley are installed on the jib, simplify the structure, and have reduced manufacturing cost, have improved stabilization of equipment performance and operating efficiency, and security performance.5, supporting mechanism is installed on the vehicle frame, has improved the dynamic compaction machinery job stabilization.
Description of drawings
Fig. 1 shows a kind of rubber-tyred dynamic compaction machinery schematic diagram of the present invention;
Fig. 2 shows the walking mechanism schematic diagram of a kind of embodiment among Fig. 1;
Fig. 3 shows the walking mechanism schematic diagram of the another kind of embodiment among Fig. 1;
Fig. 4 shows among Fig. 1 A to enlarged diagram;
Fig. 5 shows another kind of support cylinder hydraulic circuit schematic diagram among Fig. 1;
Fig. 6 shows remote control schematic diagram of the present invention.
The specific embodiment
Below in conjunction with description of drawings according to the specific embodiment of the present invention.Need to prove that in the situation of not conflicting, the application's embodiment and the feature among the embodiment can make up mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, therefore, and the restriction of open specific embodiment below protection scope of the present invention is not subjected to.
As shown in Figure 1 and Figure 4, a kind of rubber-tyred dynamic compaction machinery of the present invention comprises: vehicle frame, jib 7, walking mechanism 1, lifting mechanism 5, jib lubbing mechanism 6.Vehicle frame comprises: upper vehicle frame 32 and lower vehicle frame 31, upper vehicle frame 32 and lower vehicle frame 31 can rotate mutually, by the revolution support and connection.Can simplify the dynamic compaction machinery structure but upper vehicle frame 32 also can be fixedly connected with lower vehicle frame 31, save manufacturing cost, also can avoid simultaneously the revolution support is caused damage.
The walking mechanism 1 that walking mechanism 1 is carried, driven, turns to for tyre type wheel.
As shown in Figure 2, walking mechanism 1 comprises: drive axle 10, steeraxle 12, steering hydraulic oil cylinder 13, hydraulic motor 11, and steering hydraulic oil cylinder 13 drives steeraxle 12 and turns to, and hydraulic motor 11 drives drive axle 10 and moves.Steering hydraulic oil cylinder 13 comprises cylinder barrel, oil inlet and outlet A and B, piston, piston rod, and piston rod one end is connected with steeraxle 12 left side wheel, and the piston rod other end is connected with steeraxle 12 right side wheels, and piston is installed in the piston rod middle part.Also can adopt two steering hydraulic oil cylinders to be connected with the steeraxle left and right wheels respectively, also can drive steeraxle by other steering mechanism and turn to.
As shown in Figure 3, walking mechanism 1 comprises: control valve group 22, at least four wheels 14,15,16,17, each wheel correspondence is provided with a hydraulic motor 18,19,20,21.Hydraulic motor 18 drives wheel 14, and hydraulic motor 19 drives wheel 15, and hydraulic motor 20 drives wheel 16, and hydraulic motor 21 drives wheel 17.Four hydraulic motors 18 of control valve group 22 controls, 19,20,21 supply flow rates, thus regulate the dynamic compaction machinery pace and turn to.When dynamic compaction machinery need to turn left to the time, control valve group 22 stops to the left hydraulic motor 20,21 fuel feeding, simultaneously hydraulic motor 18,19 is supplied with identical pressure oil to the right, and dynamic compaction machinery is turned left; When dynamic compaction machinery need to turn right to the time, control valve group 22 stops to the right hydraulic motor 18,19 fuel feeding, simultaneously hydraulic motor 20,21 is supplied with identical pressure oil to the left, and dynamic compaction machinery is bent to right.
Simultaneously, also can adopt when dynamic compaction machinery need to turn left to the time, the control valve group 22 to the left flows supplied with of hydraulic motor 20,21 makes left hydraulic motor 20,21 rotating speeds be higher than right hydraulic motor 18,19 less than right hydraulic motor 18,19 flows of supplying with, realize dynamic compaction machinery turn left to.When dynamic compaction machinery need to turn right to the time, control valve group 22 to the right hydraulic motor 18,19 fuel feeding makes right hydraulic motor 18,19 rotating speeds be higher than left hydraulic motor 20,21 less than left hydraulic motor 20,21 flows of supplying with, realize dynamic compaction machinery turn right to.Control valve group 22 can adopt banked direction control valves structure, enclosed or open type hydraulic system control.
Walking mechanism 1 can also adopt four bridges to drive and steering mechanism except Fig. 2 and scheme shown in Figure 3, also can not adopt hydraulic-driven, adopts other type of drive.As adopt traditional automobile chassis structures, and walking mechanism 1 comprises: at least two vehicle bridge, power train, steering system, and power train is connected with power set, drives the vehicle bridge walking, and steering system drives vehicle bridge and turns to.Walking mechanism 1 structure is varied.
In order further to improve the job stabilization of complete machine, prevent that dynamic compaction machinery from tumbling, on the upper vehicle frame 32 supporting mechanism is set also, supporting mechanism comprises four support cylinders 2 that are used for supporting dynamic compaction machinery, is positioned at vehicle frame 32 all around on four orientation.Also can only arrange in the wings forwardly or only two support cylinders.When dynamic compaction machinery during in the strong rammer operation, because hammer ram freely falls from the high-altitude, give ground with strong impact force and vibration.Therefore tire is subject to strong impact force and vibration, causes easily dynamic compaction machinery to tumble, and dynamic compaction machinery need to be supported by support cylinder 2, prevents that dynamic compaction machinery from tumbling.
When the rubber-tyred dynamic compaction machinery in operation process, four support cylinders 2 can be subject to the impact force that each side is come, in order to reduce vibration, protection dynamic compaction machinery safety.As shown in Figure 4, in the oil-feed oil circuit of support cylinder 2, be provided with hydraulic accumulator 8 and control valve 4, in oil return circuit, be provided with throttling arrangement 9.When the place ahead support cylinder 2 was hit power, control valve 4 control the place ahead support cylinders 2 communicated with fuel tank by throttling arrangement 9; Hydraulic oil in the support cylinder 2 flows to fuel tank by throttling arrangement 9.Throttling arrangement 9 plays the effect of buffering.When support cylinder 2 did not stress, when namely built on stilts was unsettled, the hydraulic oil of control valve 4 control hydraulic accumulators 8 flowed in the support cylinder 2, and support cylinder 2 is carried out repairing.Thereby realize reducing the purpose of vibration.
In order to reduce vibration, protection dynamic compaction machinery safety.Also can in the oil-feed oil circuit of support cylinder 2, be provided with hydraulic accumulator 8 and one way valve 90 as shown in Figure 5, in oil return circuit, be provided with overflow valve 40; When support cylinder 2 was hit power, when the hydraulic fluid pressure of support cylinder 2 reached overflow valve 40 opening pressure, overflow valve 40 was opened, and overflow valve 40 off-loads are to hydraulic accumulator 8; When support cylinder 2 did not stress, hydraulic accumulator 8 end pressures were higher than support cylinder 2 pressure, and one way valve 90 is opened, and hydraulic accumulator 8 passes through one way valve 90 to support cylinder 2 repairings.Thereby realize reducing the purpose of vibration.
Jib 7 comprises first segment arm 70, second section arm 71, the 3rd joint arm 72.First segment arm 70 is terminal hinged with second section arm 71 head ends, and first segment arm 70 head ends and upper vehicle frame 32 are hinged; Second section arm 71 is terminal hinged with the 3rd joint arm 72.First segment arm 70 ends and second section arm 71 head end hinge axes are perpendicular to first segment arm 70 head ends and upper vehicle frame 32 hinge axes.Like this can so that arm support folding in same horizontal plane.When the dynamic compaction machinery operation, because three joint arm folding directions are subjected to force direction mutually vertical with three joint arms, pretend firmly can not act on the folding driving oil cylinder of three joint arms.
Lifting mechanism 5 comprises: lift oil tank 50 and assembly pulley 51.Lift oil tank 50 and assembly pulley 51 are installed on the jib 7.51 actions of lift oil tank 50 drive pulley groups realize the hammer ram lifting.Jib lubbing mechanism 6 is amplitude oil cylinder, is installed between vehicle frame 32 and the jib 7, drives jib 7 and swings luffing.
As shown in Figure 6, to simplify the dynamic compaction machinery structure in order improving, to reduce manufacturing cost, improve operating personnel's safety.Dynamic compaction machinery adopts straighforward operation.Remote control comprises: remote control transmitter, receiver of remote-control sytem, controller, the remote control transmitter transmitted radio signal, after receiver of remote-control sytem receives radio signals, control lifting mechanism, jib lubbing mechanism, walking mechanism, jib, supporting mechanism work by controller.Also can be according to the needs of automaticity, only remote control part body work.As: lifting mechanism or jib lubbing mechanism or walking mechanism or jib or supporting mechanism work.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. rubber-tyred dynamic compaction machinery, comprise: vehicle frame, jib, walking mechanism, lifting mechanism, jib lubbing mechanism, described vehicle frame comprises vehicle frame and lower vehicle frame, described jib and described upper vehicle frame are hinged, described upper vehicle frame is connected with described lower vehicle frame, described walking mechanism is connected with described lower vehicle frame, it is characterized in that: the walking mechanism of described walking mechanism for adopting tyre type wheel to carry, drive, turn to, supporting mechanism also is set on the described vehicle frame, supports dynamic compaction machinery when described supporting mechanism is used for the strong rammer operation.
2. rubber-tyred dynamic compaction machinery according to claim 1, it is characterized in that, described walking mechanism comprises: drive axle, steeraxle, steering hydraulic oil cylinder, hydraulic motor, the described steeraxle of described steering hydraulic hydraulic oil cylinder driving turns to, the described drive axle walking of described fluid motor-driven.
3. rubber-tyred dynamic compaction machinery according to claim 1, it is characterized in that, described walking mechanism comprises: control valve group, at least four wheels, each described wheel correspondence is provided with a hydraulic motor, the described wheel walking of described fluid motor-driven, described control valve group is used for the flow of each described hydraulic motor of control, when dynamic compaction machinery turn left to the time, described control valve group stops described to the left hydraulic motor fuel feeding, when dynamic compaction machinery turn right to the time, described control valve group stops to the right described hydraulic motor fuel feeding.
4. rubber-tyred dynamic compaction machinery according to claim 1, it is characterized in that, described walking mechanism comprises: the control valve group, at least four wheels, each described wheel correspondence is provided with a hydraulic motor, the described wheel walking of described fluid motor-driven, described control valve group is used for the flow of each described hydraulic motor of control, when dynamic compaction machinery turn left to the time, the flow that the flow that the described to the left hydraulic motor of described control valve group is supplied with is supplied with less than the described hydraulic motor in right side, when dynamic compaction machinery turn right to the time, described control valve group is the flow supplied with less than the described hydraulic motor in left side of described hydraulic motor fuel feeding to the right.
5. rubber-tyred dynamic compaction machinery according to claim 1 is characterized in that, described lifting mechanism comprises lift oil tank and assembly pulley, and described lift oil tank and described assembly pulley are installed on the described jib, and the action of lift oil tank drive pulley group realizes the hammer ram lifting.
6. rubber-tyred dynamic compaction machinery according to claim 1 is characterized in that, described jib lubbing mechanism comprises amplitude oil cylinder, and described amplitude oil cylinder is installed between described upper vehicle frame and the described jib, drives described jib and swings.
7. rubber-tyred dynamic compaction machinery according to claim 1 is characterized in that, is fixedly connected with between described upper vehicle frame and the described lower vehicle frame, and described supporting mechanism comprises at least two support cylinders, and described support cylinder is installed in respectively on the described lower vehicle frame.
8. rubber-tyred dynamic compaction machinery according to claim 1 is characterized in that, described upper vehicle frame can rotate relatively with described lower vehicle frame, and described supporting mechanism comprises at least two support cylinders, and described support cylinder is installed in respectively on the described upper vehicle frame.
9. rubber-tyred dynamic compaction machinery according to claim 8 is characterized in that, described supporting mechanism comprises four support cylinders, and described support cylinder is installed in respectively on four orientation all around of described upper vehicle frame.
10. according to claim 7 to the described rubber-tyred dynamic compaction machinery of 9 any one, it is characterized in that, in the oil-feed oil circuit of described support cylinder, be provided with hydraulic accumulator and control valve, in oil return circuit, be provided with throttling arrangement; When described support cylinder was hit power, described control valve was controlled described support cylinder and is communicated with fuel tank by described throttling arrangement; When described support cylinder did not stress, described control valve was controlled described hydraulic accumulator to described support cylinder repairing.
11. to the described rubber-tyred dynamic compaction machinery of 9 any one, it is characterized in that according to claim 7, in the oil-feed oil circuit of described support cylinder, be provided with hydraulic accumulator and one way valve, in oil return circuit, be provided with overflow valve; When described support cylinder is hit power, the hydraulic oil of described support cylinder by described overflow valve off-load to described hydraulic accumulator; When described support cylinder does not stress, described hydraulic accumulator by described one way valve to described support cylinder repairing.
12. according to claim 1 to the described rubber-tyred dynamic compaction machinery of 9 any one, it is characterized in that, the remote control that also comprises the work of remote control dynamic compaction machinery, described remote control comprises remote control transmitter, receiver of remote-control sytem, controller, described remote control transmitter transmitted radio signal, after described receiver of remote-control sytem receives radio signals, control at least one work in described lifting mechanism, jib lubbing mechanism, walking mechanism, jib, the supporting mechanism by described controller.
13. to the described rubber-tyred dynamic compaction machinery of 9 any one, it is characterized in that according to claim 1 jib comprises two joint arms at least, first segment arm head end and upper vehicle frame are hinged, the first segment arm is terminal hinged with the second section arm; The hinge axes of first segment arm end is vertical with the hinge axes of its head end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210477375.8A CN102979076B (en) | 2012-11-22 | 2012-11-22 | Tire type dynamic compaction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210477375.8A CN102979076B (en) | 2012-11-22 | 2012-11-22 | Tire type dynamic compaction machine |
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| Publication Number | Publication Date |
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| CN102979076A true CN102979076A (en) | 2013-03-20 |
| CN102979076B CN102979076B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210477375.8A Active CN102979076B (en) | 2012-11-22 | 2012-11-22 | Tire type dynamic compaction machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215941A (en) * | 2013-03-28 | 2013-07-24 | 三一重工股份有限公司 | Dynamic compactor convenient for expanding ramming energy |
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| CN203007922U (en) * | 2012-11-22 | 2013-06-19 | 三一重工股份有限公司 | Rubber-tyred dynamic compaction machine |
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- 2012-11-22 CN CN201210477375.8A patent/CN102979076B/en active Active
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| CN201538656U (en) * | 2009-10-13 | 2010-08-04 | 郭元章 | Self-walking remote-control tower crane |
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| CN102979076B (en) | 2014-04-16 |
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