CN103541342A - Damping system for main machine of dynamic compactor and dynamic compactor with same - Google Patents
Damping system for main machine of dynamic compactor and dynamic compactor with same Download PDFInfo
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- CN103541342A CN103541342A CN201210237620.8A CN201210237620A CN103541342A CN 103541342 A CN103541342 A CN 103541342A CN 201210237620 A CN201210237620 A CN 201210237620A CN 103541342 A CN103541342 A CN 103541342A
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Abstract
The invention discloses a damping system for a main machine of a dynamic compactor. The damping system comprises an oil cylinder, a main oil way and a bidirectional hydraulic lock. The oil cylinder comprises a cylinder body provided with an inner cavity and a piston enabling the inner cavity to be divided into a rod chamber and a non-rod chamber. The main oil way is communicated with the rod chamber and the non-rod chamber respectively. The bidirectional hydraulic lock comprises a first check valve, a second check valve, a first overflow valve, a first solenoid directional valve and a second solenoid directional valve. An outlet of the first check valve is communicated with the rod chamber, an outlet of the second check valve is communicated with the non-rod chamber, and an inlet of the second check valve is communicated with the main oil way. The first overflow valve is connected with the non-rod chamber. The first solenoid directional valve is connected with a control port of the first check valve, and an oil inlet of the first solenoid directional valve is connected with a first oil way channel. The second solenoid directional valve is connected with an inlet of the first check valve, an oil return port of the second solenoid directional valve is communicated with the main oil way, and an oil inlet of the second solenoid directional valve is connected with a second oil way channel. The damping system can be used for performing effective damping on the main machine of the dynamic compactor, the service life of the main machine is prolonged, and cost is reduced. The invention further discloses the dynamic compactor.
Description
Technical field
The present invention relates to engineering machinery field, especially relate to a kind of shock mitigation system for dynamic compaction machine main unit and there is its dynamic compaction machinery.
Background technology
At present, for the dynamic compaction machinery of ramming operation, all there is jib shock mitigation system, but jib damping can not eliminate fast, cause vibration energy to be delivered to and on dynamic compaction machine main unit, cause main frame vibrations, increase main frame fatigue strength, and shock loading has very large damage to main machine structure.
Existing a kind of shock mitigation system for main frame adopts the rear support cylinder structure of vibration damping electrically-controlled valve group, and this valve group comprises the parts such as 3-position 4-way solenoid operated directional valve, bi-bit bi-pass solenoid operated directional valve, electric proportional pressure control valve, hydraulic pressure locking-valve group, pressure sensor.This shock mitigation system valve group forms complicated; need controller programming to control in real time; cause control procedure too complicated; cost is high; and inconvenient operation; and because this system does not arrange safety guard, when turning round and walking operation, can damage oil cylinder, poor practicability when oil cylinder is bearing in ground.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.
For this reason, one object of the present invention is to propose a kind of shock mitigation system for dynamic compaction machine main unit, and described shock mitigation system can reduce vibration amplitude and the vibrations time of main frame.
Another object of the present invention is to propose a kind of dynamic compaction machinery with above-mentioned shock mitigation system.
The shock mitigation system for dynamic compaction machine main unit according to first aspect present invention, comprising: oil cylinder, and described oil cylinder comprises having the cylinder body of inner chamber and can be located at up or down the piston in described inner chamber, described piston is separated into rod chamber and rodless cavity by described inner chamber; Working connection, described working connection is communicated with described rod chamber and rodless cavity respectively; Bidirectional hydraulic lock, described bidirectional hydraulic lock comprises: the first one way valve, described the first one way valve has import, outlet and control mouth, and the outlet of wherein said the first one way valve is communicated with described rod chamber; The second one way valve, the outlet of described the second one way valve is communicated with described rodless cavity and import is communicated with working connection; The first overflow valve, described the first overflow valve is connected with described rodless cavity and is no more than predefined the first pressure threshold for controlling the oil pressure of the hydraulic oil in described rodless cavity; The first solenoid operated directional valve, described the first solenoid operated directional valve is connected with the control mouth of described the first one way valve, the oil-in of described the first solenoid operated directional valve is connected with the first asphalt channel, and wherein said the first asphalt channel is configured to control mouth that the hydraulic oil in it can flow into described the first one way valve by described the first solenoid operated directional valve to open described the first one way valve; With the second solenoid operated directional valve, described the second solenoid operated directional valve is connected with the import of described the first one way valve, and the oil return opening of described the second solenoid operated directional valve is communicated with described working connection and oil-in is connected with the second asphalt channel.
According to the shock mitigation system for dynamic compaction machine main unit of the present invention, can be located at the rear end of main frame turntable, directly main frame is carried out to effective damping, reduce vibration amplitude and the vibrations time of main frame, the shock loading of bearing such as parts such as pivoting supports from reducing main machine structure, reduce the degree of fatigue of main frame, improve the life cycle of main frame, reduce maintenance cost.
In addition, according to the shock mitigation system of the embodiment of the present invention, simple in structure, it is convenient to control, and can effectively avoid human operational error to cause oil cylinder to damage.
In addition, according to the shock mitigation system for dynamic compaction machine main unit of the present invention, can also there is following additional technical feature:
Described shock mitigation system also comprises: fuel tank, between wherein said the first overflow valve and described fuel tank, be connected with overflow oil circuit, and the oil return opening of described the first solenoid operated directional valve is communicated with described overflow oil circuit.
Described the first one way valve, described the second one way valve and described the first overflow valve are integrated in a valve body.
Described the first and second solenoid operated directional valves are respectively two-position four-way solenoid operated directional valve and include: oil inlet P, oil return inlet T be connected hydraulic fluid port A, B.
The B mouth of described the first solenoid operated directional valve is connected with the control mouth of described the first one way valve; The B mouth of described the second solenoid operated directional valve is connected with the import of described the first one way valve.
Described shock mitigation system, also comprises: the second overflow valve, the import of described the second overflow valve is communicated with described the second asphalt channel, for controlling the oil pressure of the hydraulic oil in described the second asphalt channel, is no more than predefined the second pressure threshold.
According to the shock mitigation system for dynamic compaction machine main unit of the present invention, in the course of the work without extra energy resource supply, without operation, avoid human error operation to damage oil cylinder, reduced the main frame member shock loading that particularly pivoting support is subject to simultaneously, thereby greatly improved the life cycle of main frame member, reduced use cost.
Dynamic compaction machinery according to second aspect present invention, comprising: main frame, and described main frame comprises: vehicle frame; Running gear, described running gear is located on described vehicle frame; Turntable, described turntable is rotatably located on described vehicle frame; Jib, the lower end of described jib is located on described turntable pivotly; With the shock mitigation system for dynamic compaction machine main unit of the above-mentioned first aspect according to the present invention, the cylinder body of wherein said oil cylinder is located at the rear end of described turntable.
Described cylinder body is soldered to the rear end of described turntable.
Described dynamic compaction machinery also comprises: pivoting support, described pivoting support is located between described turntable and described vehicle frame, for described turntable be can be rotated to support on to described vehicle frame.
Described dynamic compaction machinery also comprises: position detecting switch, described position detecting switch is upwards packed up to precalculated position and is triggered to activate described turntable and running gear at the cylinder rod of described oil cylinder.
According to the dynamic compaction machinery of the embodiment of the present invention, by shock mitigation system is set, can improve the damping effect to main frame, improve the application life of main frame.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to the schematic diagram of the shock mitigation system for dynamic compaction machine main unit of the embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
Below with reference to Fig. 1, describe according to the shock mitigation system 100 for dynamic compaction machine main unit of the embodiment of the present invention, can be located on the turntable of dynamic compaction machine main unit, for the damping of dynamic compaction machine main unit.
The shock mitigation system 100 for dynamic compaction machine main unit according to the embodiment of the present invention, comprising: oil cylinder 1, working connection 2, bidirectional hydraulic lock 3, the first overflow valve 4, the first solenoid operated directional valve 5 and the second solenoid operated directional valve 6.
Oil cylinder 1 comprises having the cylinder body 11 of inner chamber and can be located at up or down the piston 12 in inner chamber, piston 12 is separated into inner chamber rod chamber 13 independent of each other and rodless cavity 14 on above-below direction, the lower end of piston 12 is connected with cylinder rod 15, cylinder rod 15 stretches out from the lower end of rod chamber 13, wherein in order to support better and dynamic compaction machine main unit to be carried out to effective damping, the lower end of cylinder rod 15 can be provided with bearing 16, as shown in Figure 1.
Wherein, about the concrete structure of bidirectional hydraulic lock 3 and operating principle etc., for prior art and known by one of ordinary skilled in the art, so be not described in detail here.
The first overflow valve 4 is connected with rodless cavity 14 and is no more than predefined the first pressure threshold for controlling the oil pressure of the hydraulic oil in rodless cavity 14.Particularly, as shown in Figure 1, the oil-in of the first overflow valve 4 is connected with the pipeline between rodless cavity 14 and the second one way valve 32 outlets.In the process of dynamic compaction machinery work; the compression meeting of 12 pairs of rodless cavities 14 of piston by cylinder rod 15 compactings on bottom surface; and then realize the effect of damping; by the first overflow valve 4 is set; the oil pressure that can guarantee rodless cavity 14 interior hydraulic oil is unlikely to overpressure threshold value; protection rodless cavity 14, prevents that rodless cavity 14 from damaging.
Wherein, it should be noted that, the first pressure threshold is a damping effect predefined numerical value actual required according to dynamic compaction machine main unit, this pressure threshold is directly connected to 1 the maximum pressure load that can carry of oil cylinder, because dynamic compaction machine main unit damping requirement and the damping of dynamic compaction machinery jib require different, therefore 1 the maximum pressure load that can carry of oil cylinder is that the first pressure threshold is not the bigger the better, for those skilled in the art, should the first suitable pressure threshold be set according to the actual required damping effect of dynamic compaction machine main unit, so that damping effect reaches optimum efficiency.
The first solenoid operated directional valve 5 is connected with the control mouth of the first one way valve 31, the oil-in of the first solenoid operated directional valve 31 is connected with the first asphalt channel 7, and wherein the first asphalt channel 7 is configured to control mouth that the hydraulic oil in it can flow into the first one way valves 31 by the first solenoid operated directional valve 5 to open the first one way valve 31.
The effect of the first solenoid operated directional valve 5 is to open the first one way valve 31, make the state of the first one way valve 31 in two-way admittance, particularly, before dynamic compaction machinery work, cylinder rod 15 need to be put down so that the bearing 16 of cylinder rod 15 lower ends supports on the ground, now the electromagnet of the first solenoid operated directional valve 5 obtains electric, hydraulic oil in the first asphalt channel 7 enter from the first solenoid operated directional valve 5, flow into the first one way valves 31 again after the first solenoid operated directional valve 5 control mouth so that the first one way valve 31 is opened, the oil pressure that comes in the first asphalt channel 7 is opened the hydraulic lock of rod chamber 13, now piston 12 stretches out and contacts with ground under rod chamber 13 and the differential area return oil pressure of rodless cavity 14 and the Action of Gravity Field of cylinder rod 15.
In the process of dynamic compaction machinery work, the electromagnet of the first solenoid operated directional valve 5 is also all the time in obtaining electricity condition, the oil pressure that comes in the first asphalt channel 7 remains that the first one way valve 31 is in open mode, now when piston 12 moves upward, working connection 2 can be by the first one way valve 31 to the interior supplementary hydraulic oil of rod chamber 13, when piston 12 moves downward, the hydraulic oil in rod chamber 13 can flow in working connection 2 by the first one way valve 31, to guarantee shock mitigation system 100 normal, steady operations.
The second solenoid operated directional valve 6 is connected with the import of the first one way valve 31, and the oil return opening of the second solenoid operated directional valve 6 is communicated with working connection 2 and oil-in is connected with the second asphalt channel 8.The second solenoid operated directional valve 6 be mainly used in after dynamic compaction machinery end-of-job on pack up cylinder rod 15.Particularly, after the strong rammer end of job, when needs are packed up cylinder rod 15, stop the electromagnet energising to the first solenoid operated directional valve 5, now the first one way valve 31 is closed, then to the electromagnet of the second solenoid operated directional valve 6, switch on, hydraulic oil in the second asphalt channel 8 flows into from the import of the first one way valve 31 by the second solenoid operated directional valve 6, and finally from the outlet of the first one way valve 31, flow to rod chamber 13 and move upward and pack up to promote piston 12, due to the first one way valve 31 with the second one way valve 32 forms bidirectional hydraulic locks 3 and hydraulic oil flows into from the import of the first one way valve 31, therefore now the second one way valve 32 in open mode so that the hydraulic oil in rodless cavity 14 can flow in working connections 2 by the second one way valve 31.
When dynamic compaction machinery carries out ramming operation, after hammer ram discharges, first turntable recedes, drive the cylinder body 11 being connected with turntable to move downward, be equivalent to piston 12 move up compression rodless cavity 14, along with the increase of piston 12 upward strokes, the hydraulic oil in rodless cavity 14 is further compressed, the drag effect of its generation can support the reaction force of main frame by cylinder rod 15 and base 16 compactings on bottom surface with generation, thereby realizes the cushioning effect to main frame.
Wherein, at piston 12, upwards compress in the process of rodless cavity 14, when the oil pressure of rodless cavity 14 interior hydraulic oil is no more than predefined the first pressure threshold, the first overflow valve 4 is in closed condition, and the hydraulic oil in rodless cavity 14 can not pass through the first overflow valve 4 overflows.When the oil pressure of rodless cavity 14 interior hydraulic oil surpasses predefined the first pressure threshold, the first overflow valve 4 is in open mode, be that hydraulic oil in rodless cavity 14 flows out by the first overflow valve 4, to reduce the oil pressure in rodless cavity 14, prevent that rodless cavity 14 from damaging, guarantee that shock mitigation system 100 is stable, normal operation.
In ramming operation process, the electromagnet of the first solenoid operated directional valve 5 is always in "on" position, that is to say that the first one way valve 31 is constantly in two-way admittance state, be that hydraulic oil in rod chamber 13 can flow out and enter working connection 2 from the first one way valve 31 when piston 12 moves downward, when piston 12 moves upward, working connection 2 can be by the first one way valve 31 to the interior supplementary hydraulic oil of rod chamber 13, in addition, in the process moving downward at piston 12, working connection 2 also passes through the second one way valve 32 to the interior supplementary hydraulic oil of rodless cavity 14, thereby maintain the balance of whole oil circuit, assurance system works is normal.Wherein, about the specific works process of shock mitigation system 100, will provide below detailed description.
Traditional dynamic compaction machinery is general only carries out damping for jib, and then indirectly realize the damping to main frame, but this traditional vibration amplitude and vibrations time that can not effectively reduce main frame to the damping modes of jib, therefore on traditional dynamic compaction machinery, its main frame still can not get effective damping effect when ramming operates, thereby increased the fatigue strength of main frame, reduced the application life of main frame, according to the shock mitigation system 100 for dynamic compaction machine main unit of the embodiment of the present invention, can be located at the rear end of main frame turntable, directly main frame is carried out to effective damping, reduce vibration amplitude and the vibrations time of main frame, the shock loading of bearing such as parts such as pivoting supports from reducing main machine structure, reduce the degree of fatigue of main frame, improve the life cycle of main frame, reduce maintenance cost.
In addition, according to the shock mitigation system 100 of the embodiment of the present invention, simple in structure, it is convenient to control, and can effectively avoid human operational error to cause oil cylinder 1 to damage.
In one embodiment of the invention, shock mitigation system 100 also comprises fuel tank 42, and the oil return opening that is wherein connected with overflow oil circuit 41, the first solenoid operated directional valves 5 between the first overflow valve 4 and fuel tank 42 is communicated with overflow oil circuit 41.That is to say, in turntable hypsokinesis, make piston 12 with respect to cylinder body 11, upwards compress in the process of rodless cavity 14, when if the oil pressure of rodless cavity 14 interior compressed hydraulic oil surpasses described the first pressure threshold, rodless cavity 14 is by the first overflow valve 4 overflow off-loads, and the hydraulic oil overflowing from the first overflow valve 4 flows back to fuel tank 42 by overflow oil circuit 41.
Advantageously, the first one way valve 31, the second one way valve 32 and the first overflow valve 4 are integrated in a valve body.That is, the first one way valve 31, the second one way valve 32 and the first overflow valve 4 share a valve body, and set oil circuit in this valve body.Thus, facilitate production and processing, cost is low.
In a specific embodiment of the present invention, the first solenoid operated directional valve 5 is for two-position four-way solenoid operated directional valve and comprise oil inlet P, oil return inlet T be connected hydraulic fluid port A, B, wherein the B mouth of the first solenoid operated directional valve 5 is connected with the control mouth of the first one way valve 31.Further, the second solenoid operated directional valve 6 is also two-position four-way solenoid operated directional valve and comprise oil inlet P, oil return inlet T be connected hydraulic fluid port A, B, wherein the B mouth of the second solenoid operated directional valve 6 is connected with the import of the first one way valve 31.
Certainly, the present invention is not limited to this, and in other embodiment of the present invention, the first solenoid operated directional valve 5 can also be two position, three-way electromagnetic change valve, and now the control mouth of the first one way valve 31 and the A mouth of two position, three-way electromagnetic change valve are connected.Correspondingly, the second solenoid operated directional valve 6 can be also two position, three-way electromagnetic change valve, and the now import of the first one way valve 31 is connected with the A mouth of two position, three-way electromagnetic change valve.
While packing up cylinder rod 15 after the strong rammer end of job, need the electromagnet of the second solenoid operated directional valve 6 to obtain electric work, in order to guarantee to be no more than from the oil pressure of the hydraulic oil of interior inflow the second solenoid operated directional valve 6 oil-ins of the second asphalt channel 8 the maximum oil pressure that the second solenoid operated directional valve 6 can bear, shock mitigation system 100 also can arrange the second overflow valve 9, the import of the second overflow valve 9 is communicated with the second asphalt channel 8, in order to control the oil pressure of the hydraulic oil in the second asphalt channel 8, is no more than predefined the second pressure threshold.That is to say; in the second asphalt channel 8 come oil pressure to surpass the second pressure threshold time; the second overflow valve 9 is opened off-load; with assurance, from the oil pressure of the hydraulic oil of interior inflow the second solenoid operated directional valve 6 of the second asphalt channel 8, be no more than 6 maximum oil pressure that can carry of the second solenoid operated directional valve; protect the second solenoid operated directional valve 6, prevent its damage.
Below with reference to Fig. 1, describe according to the specific works process of the shock mitigation system for dynamic compaction machine main unit of the embodiment of the present invention, wherein for convenience of description, clear, with the first and second solenoid operated directional valves, be respectively two-position four-way solenoid operated directional valve and its B mouth and the first one way valve and be connected to example and describe.
Dynamic compaction machinery work can roughly be divided into three phases: the 1) preparatory stage; 2) working stage; 3) recovery phase.
Main object of preparatory stage is for cylinder rod 15 is put down, and the lower end of cylinder rod 15 is supported on the ground.Particularly, at dynamic compaction machinery, arrive behind operating position, the electromagnet that operates the first solenoid operated directional valve 5 obtains electric, hydraulic oil in the first asphalt channel 7 enters the first solenoid operated directional valve 5 from the P mouth of the first solenoid operated directional valve 5, and from the B mouth of the first solenoid operated directional valve 5 flow out enter the first one way valve 31 control mouth so that the first one way valve 31 is opened, now rod chamber 13 and rodless cavity 14 are all communicated with working connection 2, form the differential connection of oil cylinder 1, cylinder rod 15 stretches out and contacts with ground under the Action of Gravity Field of differential area return oil pressure and cylinder rod 15.
Working stage refers to strong rammer operation process, the electromagnet of this stage the first solenoid operated directional valve 5 is in "on" position, after hammer ram discharges, because the fall vibrations cause of hammer ram are delivered to main frame and make turntable pitching, because jib is located at the front end of turntable, so turntable shakes for the first time and is backward.When turntable hypsokinesis, the reaction force that the cylinder rod 15 of oil cylinder 1 produces by compacting ground is realized the shock-absorbing function of main frame.
Specifically, after hammer ram discharges, piston 12 moves upward to compress rodless cavity 14 with respect to cylinder body 11, when the vibrations that impose on oil cylinder 1 when main frame turntable are not very large, oil pressure in rodless cavity 14 is lower than the first pressure threshold, now the first overflow valve 4 cuts out and does not work, cylinder rod 15 by the oil pressure reaction compacting in rodless cavity 14 on the ground with to main frame damping, in this process, because rod chamber 13 moves upward with respect to cylinder body 11, the volume that is equivalent to rod chamber 13 becomes large, the return oil pressure that now passes through working connection 2 is to the interior supplementary hydraulic oil of rod chamber 13, be working connection 2 by the second solenoid operated directional valve 6 and the first one way valve 31 to the interior supplementary hydraulic oil of rod chamber 13 to maintain balance.When main frame turntable imposes on the vibrations of oil cylinder 1 when larger, the oil pressure in rodless cavity 14 will be over the first pressure threshold, and now the first overflow valve 4 is opened overflow, and protection rodless cavity 14 is not damaged by high pressure liquid force feed, thereby guarantees stability and the safety of system works.
When turntable leans forward, main frame turntable can drive oil cylinder 1 to lean forward, and now the lower end of cylinder rod 15 can built on stilts, and now under the Action of Gravity Field of working connection 2 pressure and cylinder rod 15, cylinder rod 15 stretches out again and contacts with ground.And while again retreating after turning, shock mitigation system 100 will repeat the above-mentioned course of work, repeat no more here.
In brief, when ramming operation, the reaction force that imposes on piston rod 15 by the high pressure liquid force feed in rodless cavity 14 makes the lower end compacting of piston rod 15 on the ground to support main frame turntable, thereby realize the damping to dynamic compaction machine main unit, reduce vibration amplitude and the vibrations time of main frame, improve the application life of main frame, and at working stage, damping process is without operation, without extra energy resource supply.
Recovery phase refers to after the ramming end of job, need to pack up cylinder rod 15, the electromagnet dead electricity of the first solenoid operated directional valve 5 now, and the first one way valve 31 is closed.Then to the electromagnet of the second solenoid operated directional valve 6, switch on, hydraulic oil in the second asphalt channel 8 flows into the second solenoid operated directional valve 6 from the P mouth of the second solenoid operated directional valve 6, and from the B mouth of the second solenoid operated directional valve 6, flow into the import of the first one way valve 31, hydraulic oil is by flowing into rod chamber 13 from outlet after the first one way valve 31, now the first one way valve 31 and the second one way valve 32 are all in open mode, hydraulic oil in the second asphalt channel 8 enters rod chamber 13 on the one hand, hydraulic oil in rodless cavity 14 can flow into working connection 2 by the second one way valve 32 on the other hand, piston 12 drives cylinder rod 15 upwards to reset thus.
According to the shock mitigation system 100 for dynamic compaction machine main unit of the embodiment of the present invention, in the course of the work without extra energy resource supply, without operation, avoid human error operation to damage oil cylinder 1, reduced the main frame member shock loading that particularly pivoting support is subject to simultaneously, thereby greatly improved the life cycle of main frame member, reduced use cost.
Dynamic compaction machinery according to the embodiment of the present invention, comprising: main frame, jib and according to the shock mitigation system 100 for dynamic compaction machine main unit of describing in the above embodiment of the present invention.Wherein main frame comprises vehicle frame, running gear and turntable, running gear is located on vehicle frame, running gear can be crawler type walking mechanism, turntable is rotatably located on vehicle frame, for example in one embodiment of the invention, in order better turntable to be can be rotated to support on vehicle frame, between turntable and vehicle frame, can be provided with pivoting support, wherein the concrete structure of pivoting support, for prior art is also known by one of ordinary skilled in the art, therefore no longer provides specific descriptions here.The lower end of jib is located on turntable pivotly, and the cylinder body 11 of shock mitigation system 100 is fixed with the rear end of turntable, for example, cylinder body 11 and the tail end of turntable are welded mutually.
Advantageously, dynamic compaction machinery also comprises position detecting switch 200, and position detecting switch 200 is upwards packed up to precalculated position and is triggered to activate turntable and running gear at the cylinder rod 15 of oil cylinder 1.Particularly, position detecting switch 200 can be close to oil cylinder 1 and arrange, at above-mentioned recovery phase, when the second solenoid operated directional valve 6 energisings are upwards packed up cylinder rod 15, when cylinder rod 15 rises to behind precalculated position, position detecting switch is triggered and to dynamic compaction machine main unit control system transmitted signal, under the effect of this signal, the running gear of dynamic compaction machinery and turntable enter and can operate running status, but when position detecting switch 1 does not send signal, running gear and turntable are not accepted any operation signal of engine control system, to avoid because faulty operation starts turntable or running gear when cylinder rod 15 supports on the ground, damage oil cylinder 1.
According to other formation of the dynamic compaction machinery of the embodiment of the present invention etc. and operating principle, by one of ordinary skilled in the art, known, be not described in detail here.
According to the dynamic compaction machinery of the embodiment of the present invention, by shock mitigation system 100 is set, can improve the damping effect to main frame, improve the application life of main frame.
In the description of this manual, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. for a shock mitigation system for dynamic compaction machine main unit, it is characterized in that, comprising:
Oil cylinder, described oil cylinder comprises having the cylinder body of inner chamber and can be located at up or down the piston in described inner chamber, described piston is separated into rod chamber and rodless cavity by described inner chamber;
Working connection, described working connection is communicated with described rod chamber and rodless cavity respectively;
Bidirectional hydraulic lock, described bidirectional hydraulic lock comprises:
The first one way valve, described the first one way valve has import, outlet and control mouth, and the outlet of wherein said the first one way valve is communicated with described rod chamber;
The second one way valve, the outlet of described the second one way valve is communicated with described rodless cavity and import is communicated with working connection;
The first overflow valve, described the first overflow valve is connected with described rodless cavity and is no more than predefined the first pressure threshold for controlling the oil pressure of the hydraulic oil in described rodless cavity;
The first solenoid operated directional valve, described the first solenoid operated directional valve is connected with the control mouth of described the first one way valve, the oil-in of described the first solenoid operated directional valve is connected with the first asphalt channel, and wherein said the first asphalt channel is configured to control mouth that the hydraulic oil in it can flow into described the first one way valve by described the first solenoid operated directional valve to open described the first one way valve; With
The second solenoid operated directional valve, described the second solenoid operated directional valve is connected with the import of described the first one way valve, and the oil return opening of described the second solenoid operated directional valve is communicated with described working connection and oil-in is connected with the second asphalt channel.
2. the shock mitigation system for dynamic compaction machine main unit according to claim 1, it is characterized in that, also comprise: fuel tank, between wherein said the first overflow valve and described fuel tank, be connected with overflow oil circuit, the oil return opening of described the first solenoid operated directional valve is communicated with described overflow oil circuit.
3. the shock mitigation system for dynamic compaction machine main unit according to claim 1, is characterized in that, described the first one way valve, described the second one way valve and described the first overflow valve are integrated in a valve body.
4. the shock mitigation system for dynamic compaction machine main unit according to claim 1, is characterized in that, described the first and second solenoid operated directional valves are respectively two-position four-way solenoid operated directional valve and include: oil inlet P, oil return inlet T be connected hydraulic fluid port A, B.
5. the shock mitigation system for dynamic compaction machine main unit according to claim 4, is characterized in that, the B mouth of described the first solenoid operated directional valve is connected with the control mouth of described the first one way valve; The B mouth of described the second solenoid operated directional valve is connected with the import of described the first one way valve.
6. the shock mitigation system for dynamic compaction machine main unit according to claim 1, it is characterized in that, also comprise: the second overflow valve, the import of described the second overflow valve is communicated with described the second asphalt channel, for controlling the oil pressure of the hydraulic oil in described the second asphalt channel, is no more than predefined the second pressure threshold.
7. a dynamic compaction machinery, is characterized in that, comprising:
Main frame, described main frame comprises:
Vehicle frame;
Running gear, described running gear is located on described vehicle frame;
Turntable, described turntable is rotatably located on described vehicle frame;
Jib, the lower end of described jib is located on described turntable pivotly; With
According to the shock mitigation system for dynamic compaction machine main unit described in any one in claim 1-6, the cylinder body of wherein said oil cylinder is located at the rear end of described turntable.
8. dynamic compaction machinery according to claim 7, is characterized in that, described cylinder body is soldered to the rear end of described turntable.
9. dynamic compaction machinery according to claim 7, is characterized in that, also comprises: pivoting support, described pivoting support is located between described turntable and described vehicle frame, for described turntable be can be rotated to support on to described vehicle frame.
10. according to the dynamic compaction machinery described in any one in claim 7-9, it is characterized in that, also comprise: position detecting switch, described position detecting switch is upwards packed up to precalculated position and is triggered to activate described turntable and running gear at the cylinder rod of described oil cylinder.
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| CN201210237620.8A CN103541342B (en) | 2012-07-09 | 2012-07-09 | For the shock mitigation system of dynamic compaction machine main unit and the dynamic compaction machinery with it |
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| CN201210237620.8A CN103541342B (en) | 2012-07-09 | 2012-07-09 | For the shock mitigation system of dynamic compaction machine main unit and the dynamic compaction machinery with it |
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| CN114857206A (en) * | 2022-07-06 | 2022-08-05 | 太原理工大学 | Active control vibration reduction system and method based on electro-hydraulic compound cylinder |
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| CN114857206B (en) * | 2022-07-06 | 2022-09-23 | 太原理工大学 | Active control vibration reduction system and method based on electro-hydraulic compound cylinder |
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| Publication number | Publication date |
|---|---|
| CN103541342B (en) | 2016-08-10 |
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