CN202833008U - Concrete pump and hydraulic system thereof - Google Patents
Concrete pump and hydraulic system thereof Download PDFInfo
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- CN202833008U CN202833008U CN201220479570.XU CN201220479570U CN202833008U CN 202833008 U CN202833008 U CN 202833008U CN 201220479570 U CN201220479570 U CN 201220479570U CN 202833008 U CN202833008 U CN 202833008U
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Abstract
The utility model discloses a concrete pump and a hydraulic system thereof. The hydraulic system comprises a main hydraulic system which supplies a main cylinder with oil and an assisting hydraulic system which supplies a swing cylinder with the oil, wherein the main hydraulic system and the assisting hydraulic system are communicated. Due to the fact that the main hydraulic system and the assisting hydraulic system are communicated, when pressure in a hydraulic circuit of the main cylinder rises, the oil can be supplied to a hydraulic circuit of the swing cylinder so as to drive the swing cylinder to swing. By means of the hydraulic system, on one hand, when the pressure of the hydraulic circuit of the main cylinder is greater than the pressure of the hydraulic circuit of the swing cylinder, the pressure of the hydraulic circuit of the swing cylinder can vary in a real time mode along with the variation of the pressure of the hydraulic circuit of the main cylinder, adjusting can be achieved, and power loss is avoided; on the other hand, the hydraulic circuit of the main cylinder supplies the swing cylinder with pressure oil directly, so that pressure regulation of an assisting hydraulic oil passage can be accurate and direct, and thus the structure is simple and reliable and cost is low.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of hydraulic system of concrete pump and concrete pump with this hydraulic system.
Background technique
The master cylinder of concrete pump is used for promoting to carry the concrete of cylinder, and oscillating oil cylinder is used for making S valve or the commutation of C valve of concrete hopper.The pressure size of hydraulic oil depends on pumped concrete type of land and pumping height in the master cylinder; The required hydraulic fluid pressure of oscillating oil cylinder action then depends primarily on concrete type.At present, the oscillating oil cylinder pressure of concrete pump size determines by the relief valve set pressure of oscillating oil cylinder oil circuit mostly, no matter the pumped concrete type of land how, the oil pressure relief of setting is definite value.For make that S valve or C valve swing rapidly and put the force value that the force value that relief valve is set needs when often getting the highest concrete of pumping viscosity in place.This causes the concrete pump power loss usually, wastes energy, and can produce very large impact and noise, and accelerate the wearing and tearing of S valve place structural member.
The hydraulic system that existing concrete pump producer uses concrete pump is improved, and by detecting the pressure of master cylinder, and the reduction valve that uses accordingly control system control to be installed in the accumulator place reaches the purpose of control energy storage pressure.Yet on the one hand, this hydraulic system is not suitable for open type hydraulic system, because hydraulic shock is larger in the open type hydraulic system, pressure surge is large, and the pressure data accuracy is low, and system reliability is poor; On the other hand, this hydraulic system structure is complicated, and the cost of concrete pump is higher.
The model utility content
In view of this, the utility model proposes a kind of hydraulic system and concrete pump of concrete pump, it can be at the pressure of the hydraulic circuit of master cylinder during greater than the pressure of the hydraulic circuit of oscillating oil cylinder, regulate the pressure of oscillating oil cylinder hydraulic circuit according to the pressure of the hydraulic circuit of master cylinder, energy saving, and simple and reliable for structure, cost is lower.
On the one hand, the utility model provides a kind of hydraulic system of concrete pump, comprises to the main hydraulic system of master cylinder fuel feeding with to the auxiliary hydraulic system of oscillating oil cylinder fuel feeding, and it is characterized in that, described main hydraulic system is communicated with described auxiliary hydraulic system.
Further, described main hydraulic system comprises main oil pump, the first selector valve and master cylinder, wherein, the oil outlet of described main oil pump is connected with the filler opening of described the first selector valve, the actuator port of described the first selector valve is connected with described master cylinder, and the return opening of described the first selector valve is connected to fuel tank;
Described auxiliary hydraulic system comprises auxiliary oil pump, the second selector valve and oscillating oil cylinder, wherein, the oil outlet of described auxiliary oil pump is connected with the filler opening of described the second selector valve, the actuator port of described the second selector valve is connected with described oscillating oil cylinder, and the return opening of described the second selector valve is connected to described fuel tank; And
The oil outlet of described main oil pump also is connected with the filler opening of described the second selector valve by the first one-way valve.
Further, also comprise reduction valve, the filler opening of described reduction valve simultaneously with the oil outlet of described main oil pump be connected the filler opening of the first selector valve and be connected; The oil outlet of described reduction valve is connected with the filler opening of described the first one-way valve.
Further, described reduction valve comprises Proprutioning pressure reducing valve, Fixed differential reducing valve or Fixed pressure reducing valve.
Further, described auxiliary hydraulic system also comprises accumulator, and described accumulator is connected with the filler opening of the oil outlet of described auxiliary oil pump, described the second selector valve simultaneously, the oil outlet of described the first one-way valve connects.
Further, described auxiliary hydraulic system also comprises the 3rd selector valve, and the filler opening of described the 3rd selector valve is connected with the oil outlet of described auxiliary oil pump,
The actuator port of described the 3rd selector valve is connected with the filler opening of described the second selector valve, described accumulator simultaneously,
The return opening of described the 3rd selector valve is connected to described fuel tank;
Described the 3rd selector valve has the first working state and the second working state, wherein,
Under described the first working state, the filler opening of described the 3rd selector valve is communicated with actuator port; Under described the second working state, the filler opening of described the 3rd selector valve is communicated with return opening.
Further, described auxiliary hydraulic system also comprises the pressure that detects described accumulator, and controls the pressure controller of described the 3rd selector valve commutation according to the pressure of described accumulator, and described pressure controller is connected with described accumulator.
Further, described the 3rd selector valve is solenoid directional control valve, and described pressure controller comprises pressure relay or pressure transducer;
Perhaps, described the 3rd selector valve is hydraulicdirectional control valve, and described pressure controller is pilot-operated pressure control valve.
Further, described auxiliary hydraulic system also comprises the second one-way valve,
The filler opening of described the second one-way valve is connected with the actuator port of described the 3rd selector valve, and the oil outlet of described the second one-way valve is connected with the oil outlet of the filler opening of described the second selector valve, described accumulator and described the first one-way valve simultaneously.
Further, described main oil pump and described auxiliary oil pump all are connected with relief valve.
Of the present utility modelly also provide on the other hand a kind of concrete pump, had the hydraulic system of aforesaid any one concrete pump.
Main hydraulic system of the present utility model (being the hydraulic circuit of master cylinder) is communicated with auxiliary hydraulic system (being the hydraulic circuit of oscillating oil cylinder), when the pressure in the hydraulic circuit of master cylinder raises, can to the hydraulic circuit fuel feeding of oscillating oil cylinder, drive oscillating oil cylinder and swing.Hydraulic system of the present utility model, on the one hand, during greater than the pressure of the hydraulic circuit of oscillating oil cylinder, the hydraulic circuit pressure of oscillating oil cylinder can change and real-time change with the pressure of main oil cylinder hydraulic oil circuit at the pressure of the hydraulic circuit of master cylinder, realize adjustablely, avoid power loss; On the other hand, directly for oscillating oil cylinder provides pressure oil, make auxiliary hydraulic circuit pressure controlling more accurate, direct, simple and reliable for structure by the hydraulic circuit of master cylinder, cost is lower.
Description of drawings
The accompanying drawing that consists of a part of the present utility model is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 provides a kind of hydraulic system embodiment's of concrete pump structural representation for the utility model.
Description of reference numerals:
1 first selector valve
2 reduction valve
3 accumulators
4 second selector valves
5 oscillating oil cylinders
6 master cylinders
7 main oil pumps
8 auxiliary oil pumps
9 solenoid directional control valves
10 pressure transducers
11 first one-way valves
12 second one-way valves
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment in the utility model can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Basic thought of the present utility model is: the hydraulic circuit of master cylinder is communicated with (accumulator place) hydraulic circuit in the oscillating oil cylinder, on the one hand, make the hydraulic circuit pressure of oscillating oil cylinder, the real-time change with the pressure variation of main oil cylinder hydraulic oil circuit, realize adjustablely, avoid power loss; On the other hand, by the hydraulic circuit of master cylinder directly for oscillating oil cylinder provides pressure oil, more accurate directly, and simple and reliable for structure, cost is low.
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail:
As shown in Figure 1, the utility model provides a kind of hydraulic system embodiment of concrete pump, and it comprises that described main hydraulic system is communicated with described auxiliary hydraulic system to the main hydraulic system of master cylinder 6 fuel feeding with to the auxiliary hydraulic system of oscillating oil cylinder 5 fuel feeding.
Main hydraulic system of the present utility model (being the hydraulic circuit of master cylinder) is communicated with auxiliary hydraulic system (being the hydraulic circuit of oscillating oil cylinder), when the pressure in the hydraulic circuit of master cylinder raises, can to the hydraulic circuit fuel feeding of oscillating oil cylinder, drive oscillating oil cylinder and swing.Hydraulic system of the present utility model on the one hand, at the pressure of the hydraulic circuit of master cylinder during greater than the pressure of the hydraulic circuit of oscillating oil cylinder, the hydraulic circuit pressure of oscillating oil cylinder can change with the pressure of main oil cylinder hydraulic oil circuit and real-time change realizes adjustable, avoid power loss, energy saving; On the other hand, directly for oscillating oil cylinder provides pressure oil, more accurate directly and this hydraulic system structure is simple and reliable by the hydraulic circuit of master cylinder, and cost is lower.
As a preferred embodiment of the present utility model, as shown in Figure 1, this hydraulic system comprises main hydraulic system and auxiliary hydraulic system.Wherein, main hydraulic system comprises main oil pump 7, the first selector valve 1 and master cylinder 6; The filler opening of main oil pump 7 is connected with fuel tank, and the oil outlet of main oil pump 7 is connected to the filler opening of the first selector valve 1, and the return opening of the first selector valve 1 is connected with fuel tank; The first selector valve 1 preferred three-position four-way valve, master cylinder 6 comprises two hydraulic jacks, two actuator ports of the first selector valve 1 are connected to respectively two hydraulic jacks of master cylinder 6, and preferably are connected to respectively the rodless cavity of two hydraulic jacks, and the rod chamber of two hydraulic jacks is interconnected; Main oil pump 7 also is connected with relief valve.
Wherein, the first selector valve 1 has three kinds of working staties, and during meta, main hydraulic system is non-loaded, and hydraulic oil directly is back to fuel tank; During left position, the master cylinder 6 that pressure oil promotes the right side stretches out, and in the hydraulic oil on the left of the hydraulic oil in the rod chamber of right side master cylinder 6 enters in the master cylinder 6, the master cylinder 6 that orders about the left side shrinks; During right position, master cylinder 6 reverse movement, the left side oil cylinder stretches out, and the right side oil cylinder shrinks.The commutation of the first selector valve 1 so that two master cylinders 6 are alternately flexible, realizes the in turn purpose of pump concrete.
This first selector valve 1 preferably adopts electro-hydraulic reversing valve or pilot operated directional control valve of 3-position 4-way, also can adopt the selector valve of other types.The Placement of two master cylinders 6 belongs to the existing known technology of related domain, also can adopt rodless cavity to link to each other, and rod chamber is connected with the actuator port of the first selector valve 1.
Auxiliary hydraulic system comprises auxiliary oil pump 8, solenoid directional control valve 9, the second one-way valve 12, pressure transducer 10, accumulator 3, the second selector valve 4, oscillating oil cylinder 5.Wherein, the filler opening of auxiliary oil pump 8 is connected with fuel tank, the oil outlet of auxiliary oil pump 8 is connected with the filler opening of solenoid directional control valve 9, illustrated solenoid directional control valve 9 is preferably two position four-way valves, the actuator port of this solenoid directional control valve 9 is connected with the filler opening of the second one-way valve 12, the oil outlet of the second one-way valve 12 simultaneously with accumulator 3 be connected the filler opening of selector valve 4 and be connected; The second selector valve 4 is preferably three-position four-way valve, and oscillating oil cylinder 5 preferably includes the hydraulic jack that two piston rods link to each other, and the rod chamber of oscillating oil cylinder 5 all is connected to fuel tank, and two actuator ports of the second selector valve 4 are connected to respectively the rodless cavity of oscillating oil cylinder 5; The return opening of the return opening of solenoid directional control valve 9 and the second selector valve 4 all is connected to fuel tank; Auxiliary oil pump 8 also is connected with relief valve, and accumulator 3 also is connected to fuel tank by manual pressure release oil circuit.
Such as the effect of the first selector valve 1 in the main hydraulic system, these the second selector valve 4 preferred 3-position 4-way electro-hydraulic reversing valve or pilot operated directional control valves can realize that two oscillating oil cylinders 5 are alternately flexible.Equally, the second selector valve 4 can adopt the other types selector valve.
For the solenoid directional control valve 9 in the auxiliary hydraulic system, it is preferably two position four-way valves, and first, second two kinds of working staties are arranged, and as shown in Figure 1, when being in left position, auxiliary oil pump 8 is accumulator 3 repairings, corresponding its first working state; When being in right position, auxiliary oil pump 8 directly is communicated with fuel tank by solenoid directional control valve 9, corresponding its second working state.Pressure transducer 10 can detect the pressure in the accumulator 3, and according to the master controller transmitted signal of the pressure in the accumulator 3 to concrete pump, control solenoid directional control valve 9 gets electric or dead electricity, makes its conversion between left position and right position.
In addition, as shown in Figure 1, directly be communicated with by reduction valve 2 and the first one-way valve 11 between main hydraulic system and the auxiliary hydraulic system, wherein, the filler opening of reduction valve 2 is connected with the oil outlet, the filler opening of the first selector valve 1 of main oil pump 7 in the main hydraulic system simultaneously, the oil outlet of reduction valve 2 is connected with the filler opening of the first one-way valve 11, the oil outlet of the first one-way valve 11 and then be connected simultaneously with accumulator 3, the filler opening of the second selector valve 4 and the oil outlet of the second one-way valve 12 in the auxiliary hydraulic system.
Introduce according to above-mentioned structure to hydraulic system embodiment of the present utility model and annexation, the below discusses with regard to the working procedure of above-described embodiment.
At first, the pressure of supposing main hydraulic system is P1, and the value of P1 depends on the concrete type of pumping, and it is variable; Energy storage pressure is P2; Auxiliary hydraulic system pressure P3 is set by relief valve in the auxiliary hydraulic system, is set as the pressure minimum that guarantees oscillating oil cylinder 5 normal commutation in the present embodiment; Wherein reduction valve 2 is preferably Fixed pressure reducing valve, and its delivery pressure can be set according to the normal needed force value of commutation that swings under bad working environments, is assumed to P4, P4〉P3.The pumped concrete type of land not simultaneously, the working state of system is as follows:
When 1, the concrete viscosity of pumping is low
The concrete viscosity of pumping is low, hydraulic fluid pressure is low in the master cylinder, so the pressure P 1 of main hydraulic system is less, satisfy P1＜P3, although be connected with the first one-way valve 11 between main hydraulic system and the auxiliary hydraulic system, this moment, main hydraulic system pressure was lower, and it can't not need repairing in the accumulator 3 yet, the pressure oil that accumulator is 3 li is from auxiliary oil pump 8, this moment P2=P3.
When 2, the concrete viscosity of pumping is higher
Along with the rising of the concrete viscosity of pumping, hydraulic fluid pressure raises in the master cylinder 6, and oscillating oil cylinder 5 required swing pressure also raise gradually.When the pressure P 1 of main hydraulic system was increased to P4＞P1＞P3, this moment, oscillating oil cylinder 5 needed larger pressure normally to swing, and main hydraulic system begins repairing in the accumulator 3.Pressure oil in the main hydraulic system enters accumulator 3 by Fixed pressure reducing valve 2 and the first one-way valve 11, and therefore the pressure P 2=P1 of accumulator 3＞P3 can make oscillating oil cylinder 5 obtain larger pressure, thereby drive oscillating oil cylinder 5.When the pressure of main hydraulic system continues to be elevated to P1 〉=P4; main system is always P4 by Fixed pressure reducing valve 2 and one-way valve 11 to the pressure of accumulator 3 repairings; limit the continuation rising of energy storage pressure, both satisfied tilt cylinder commutation requirement, again can protective system safety and minimizing impact and noise.
3, when P2 〉=P3
When main hydraulic system in auxiliary hydraulic system repairing process, perhaps the concrete viscosity when pumping reduces, and accumulator 3 pressure are when still keeping higher pressure, be P2 〉=P3, pressure transducer 10 detects larger pressure signal, and is sent to the controller of concrete pump, control solenoid directional control valve 9 dead electricity, make the pressure oil of auxiliary hydraulic system by solenoid directional control valve 9 direct pressure releases, avoid auxiliary oil pump 8 energy losses.And when pressure transducer 10 detected accumulator 3 pressure drops to a certain value, also to the concrete pump controller transmitted signal, it is electric that control solenoid directional control valve 9 gets, to continue to replenish accumulator 3 pressure.
According to the above discussion; the utility model allows the initial pressure P3 of auxiliary hydraulic system is set as the pressure minimum that guarantees oscillating oil cylinder 5 normal commutation; because main hydraulic system can be when oscillating oil cylinder 5 required swing pressure raise; in time replenish high pressure hydraulic oil to auxiliary hydraulic system; the pressure of realizing auxiliary hydraulic system is adjustable with the pressure of main hydraulic system; avoid auxiliary hydraulic system to remain pressure maximum, have at least following advantage:
1, the pressure of auxiliary hydraulic system is adjustable, compares with the existing system that is full swing pressure with auxiliary hydraulic system pressure fixed configurations, has avoided unnecessary power loss;
2, can effectively prevent the full swing pressure of oscillating oil cylinder 5 because existing all the time, and produce enormous impact, avoid vibrations and noise, prolong the working life of swing member;
3, pass through main hydraulic system directly to auxiliary hydraulic system (accumulator) repairing, the pressure controlling of auxiliary hydraulic system is directly simple;
4, not by realizing the adjustable of auxiliary hydraulic system with other pressure detecting systems and control system, simple in structure, cost is lower.
Although one skilled in the art will appreciate that the preferred embodiment of the hydraulic system of a kind of concrete pump that above-described embodiment provides for the utility model, but, according to different designs demand and the restriction of hydraulic system, the technological scheme in the above-mentioned enforcement is alternative, for example:
1, the Fixed pressure reducing valve 2 of above-described embodiment be for the pressure decreased that makes the pressure oil that main hydraulic system carries to auxiliary hydraulic system to driving the required pressure of oscillating oil cylinder 5, when the pressure of avoiding main hydraulic system to carry is excessive, bring impact for auxiliary hydraulic circuit or oscillating oil cylinder 5.Accordingly, under the condition that design requirement allows, this Fixed pressure reducing valve 2 can replace with Fixed differential reducing valve, Proprutioning pressure reducing valve.Further, for the pump truck of particular type, this reduction valve also can be cancelled, and can not cause negative effect to system simultaneously, realizes same effect.
2, the combination of solenoid directional control valve 9 and pressure transducer 10 is in order to realize when the pressure P 2 〉=P3 of accumulator 3, and blocking-up auxiliary oil pump 8 is avoided power loss to accumulator 3 repairings; This pressure transducer 10 can replace with pressure relay; State in realization on the basis of function, solenoid directional control valve 9 can replace with hydraulicdirectional control valve, and correspondingly pressure relay 10 can replace with pilot-operated pressure control valve, and this hydraulicdirectional control valve and pilot-operated pressure control valve can the integral type designs.
The utility model also provides a kind of concrete pump, and it is provided with the hydraulic system of above-mentioned a kind of concrete pump.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (11)
1. the hydraulic system of a concrete pump is characterized in that, comprises that described main hydraulic system is communicated with described auxiliary hydraulic system to the main hydraulic system of master cylinder (6) fuel feeding with to the auxiliary hydraulic system of oscillating oil cylinder (5) fuel feeding.
2. the hydraulic system of a kind of concrete pump according to claim 1, it is characterized in that, described main hydraulic system comprises main oil pump (7), the first selector valve (1) and master cylinder (6), wherein, the oil outlet of described main oil pump (7) is connected with the filler opening of described the first selector valve (1), the actuator port of described the first selector valve (1) is connected with described master cylinder (6), and the return opening of described the first selector valve (1) is connected to fuel tank;
Described auxiliary hydraulic system comprises auxiliary oil pump (8), the second selector valve (4) and oscillating oil cylinder (5), wherein, the oil outlet of described auxiliary oil pump (8) is connected with the filler opening of described the second selector valve (4), the actuator port of described the second selector valve (4) is connected with described oscillating oil cylinder (5), and the return opening of described the second selector valve (4) is connected to described fuel tank; And
The oil outlet of described main oil pump (7) also is connected with the filler opening of described the second selector valve (4) by the first one-way valve (11).
3. the hydraulic system of a kind of concrete pump according to claim 2, it is characterized in that, also comprise reduction valve (2), the filler opening of described reduction valve (2) simultaneously with the oil outlet of described main oil pump (7) be connected the filler opening of the first selector valve (1) and be connected; The oil outlet of described reduction valve (2) is connected with the filler opening of described the first one-way valve (11).
4. the hydraulic system of a kind of concrete pump according to claim 3 is characterized in that, described reduction valve (2) comprises Proprutioning pressure reducing valve, Fixed differential reducing valve or Fixed pressure reducing valve.
5. the hydraulic system of the described a kind of concrete pump of any one claim according to claim 2-4, it is characterized in that, described auxiliary hydraulic system also comprises accumulator (3), and described accumulator (3) is connected with the filler opening of the oil outlet of described auxiliary oil pump (8), described the second selector valve (4) simultaneously, the oil outlet connection of described the first one-way valve (11).
6. the hydraulic system of a kind of concrete pump according to claim 5 is characterized in that, described auxiliary hydraulic system also comprises the 3rd selector valve, and the filler opening of described the 3rd selector valve is connected with the oil outlet of described auxiliary oil pump (8),
The actuator port of described the 3rd selector valve is connected with the filler opening of described the second selector valve (4), described accumulator (3) simultaneously,
The return opening of described the 3rd selector valve is connected to described fuel tank;
Described the 3rd selector valve has the first working state and the second working state, wherein,
Under described the first working state, the filler opening of described the 3rd selector valve is communicated with actuator port; Under described the second working state, the filler opening of described the 3rd selector valve is communicated with return opening.
7. the hydraulic system of a kind of concrete pump according to claim 6, it is characterized in that, described auxiliary hydraulic system also comprises the pressure that detects described accumulator (3), and control the pressure controller of described the 3rd selector valve commutation according to the pressure of described accumulator (3), described pressure controller is connected with described accumulator (3).
8. the hydraulic system of a kind of concrete pump according to claim 7 is characterized in that,
Described the 3rd selector valve is solenoid directional control valve (9), and described pressure controller comprises pressure relay or pressure transducer (10);
Perhaps, described the 3rd selector valve is hydraulicdirectional control valve, and described pressure controller is pilot-operated pressure control valve.
9. the hydraulic system of a kind of concrete pump according to claim 8 is characterized in that, described auxiliary hydraulic system also comprises the second one-way valve (12),
The filler opening of described the second one-way valve (12) is connected with the actuator port of described the 3rd selector valve, and the oil outlet of described the second one-way valve (12) is connected with the oil outlet of the filler opening of described the second selector valve (4), described accumulator (3) and described the first one-way valve (11) simultaneously.
10. the hydraulic system of a kind of concrete pump according to claim 9 is characterized in that, described main oil pump (7) and described auxiliary oil pump (8) all are connected with relief valve.
11. a concrete pump is characterized in that, has the hydraulic system such as the described a kind of concrete pump of claim 1-10 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220479570.XU CN202833008U (en) | 2012-09-19 | 2012-09-19 | Concrete pump and hydraulic system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220479570.XU CN202833008U (en) | 2012-09-19 | 2012-09-19 | Concrete pump and hydraulic system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833008U true CN202833008U (en) | 2013-03-27 |
Family
ID=47944733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201220479570.XU Expired - Lifetime CN202833008U (en) | 2012-09-19 | 2012-09-19 | Concrete pump and hydraulic system thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670997A (en) * | 2013-12-13 | 2014-03-26 | 中联重科股份有限公司 | Hybrid power system and concrete pumping equipment |
| CN105156287A (en) * | 2015-09-23 | 2015-12-16 | 刘安桂 | Hydraulic oil passage heating type hydro-mechanical residual heat recycling system |
| CN106248374A (en) * | 2016-09-18 | 2016-12-21 | 江苏三斯风电科技有限公司 | Yaw brake simulation test bed |
| CN107288946A (en) * | 2017-07-13 | 2017-10-24 | 太原科技大学 | A kind of hydraulic circuit of pump control asymmetrical cylinder |
| CN107327432A (en) * | 2017-08-25 | 2017-11-07 | 太原科技大学 | A kind of pump control cylinder hydraulic circuit and its control method |
| CN107387468A (en) * | 2017-08-28 | 2017-11-24 | 福建龙马环卫装备股份有限公司 | The guide's energy-saving control system and its control method of trash compactor hydraulic circuit |
| CN110725821A (en) * | 2019-09-25 | 2020-01-24 | 中联重科股份有限公司 | Distribution hydraulic system and concrete distribution equipment |
| CN111365309A (en) * | 2018-12-25 | 2020-07-03 | 青岛九合重工机械有限公司 | Novel arm support pump truck oscillating cylinder hydraulic system and concrete pump truck |
-
2012
- 2012-09-19 CN CN201220479570.XU patent/CN202833008U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670997A (en) * | 2013-12-13 | 2014-03-26 | 中联重科股份有限公司 | Hybrid power system and concrete pumping equipment |
| CN103670997B (en) * | 2013-12-13 | 2016-06-29 | 中联重科股份有限公司 | Hybrid power system and concrete pumping equipment |
| CN105156287A (en) * | 2015-09-23 | 2015-12-16 | 刘安桂 | Hydraulic oil passage heating type hydro-mechanical residual heat recycling system |
| CN106248374A (en) * | 2016-09-18 | 2016-12-21 | 江苏三斯风电科技有限公司 | Yaw brake simulation test bed |
| CN107288946A (en) * | 2017-07-13 | 2017-10-24 | 太原科技大学 | A kind of hydraulic circuit of pump control asymmetrical cylinder |
| CN107288946B (en) * | 2017-07-13 | 2019-03-26 | 太原科技大学 | A kind of hydraulic circuit of pump control asymmetrical cylinder |
| CN107327432A (en) * | 2017-08-25 | 2017-11-07 | 太原科技大学 | A kind of pump control cylinder hydraulic circuit and its control method |
| CN107327432B (en) * | 2017-08-25 | 2019-03-29 | 太原科技大学 | A kind of pump control cylinder hydraulic circuit and its control method |
| CN107387468A (en) * | 2017-08-28 | 2017-11-24 | 福建龙马环卫装备股份有限公司 | The guide's energy-saving control system and its control method of trash compactor hydraulic circuit |
| CN111365309A (en) * | 2018-12-25 | 2020-07-03 | 青岛九合重工机械有限公司 | Novel arm support pump truck oscillating cylinder hydraulic system and concrete pump truck |
| CN110725821A (en) * | 2019-09-25 | 2020-01-24 | 中联重科股份有限公司 | Distribution hydraulic system and concrete distribution equipment |
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