CN202507887U - Variable damping oil gas suspension system and crane - Google Patents
Variable damping oil gas suspension system and crane Download PDFInfo
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- CN202507887U CN202507887U CN2012200701205U CN201220070120U CN202507887U CN 202507887 U CN202507887 U CN 202507887U CN 2012200701205 U CN2012200701205 U CN 2012200701205U CN 201220070120 U CN201220070120 U CN 201220070120U CN 202507887 U CN202507887 U CN 202507887U
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- accumulator
- servo valve
- oil
- electrohydraulic servo
- damping
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Abstract
The utility model provides a variable damping oil gas suspension system and a crane. The variable damping oil gas suspension system comprises an oil cylinder, a first damping hole, a first one-way valve, a first accumulator, a second damping hole, a second one-way valve and a second accumulator. The oil cylinder comprises a rodless cavity and a rod cavity. One end of the first damping hole is communicated with the rodless cavity, and the other end of the first damping hole is communicated with the first accumulator. An oil inlet of the first one-way valve is communicated with the first accumulator, and an oil outlet of the first one-way valve is communicated with the rodless cavity. One end of the second damping hole is communicated with the rod cavity, and the other end of the second damping hole is communicated with the second accumulator. An oil inlet of the second one-way valve is communicated with the second accumulator, and an oil outlet of the second one-way valve is communicated with the rod cavity. The oil gas suspension system further comprises a first electro-hydraulic servo valve, an oil inlet of the first electro-hydraulic servo valve is communicated with the rodless cavity, and an oil outlet of the first electro-hydraulic servo valve is communicated with the first accumulator. According to the variable damping oil gas suspension system and the crane, the electro-hydraulic servo valve is connected in parallel beside the damping holes, the damping of the oil gas suspension system is regulated through the electro-hydraulic servo valve, so that a crane truck can operate smoothly on different road conditions.
Description
Technical field
The utility model relates to a kind of oleo-pneumatic suspension system, is meant a kind of change damping oil gas suspension and hoisting crane especially.
Background technology
The oleo-pneumatic suspension system generally all is installed on the car hosit, and the effect of oleo-pneumatic suspension system is under complex road condition, to relax to impact, and makes the vehicle body smooth-ride.
At present; The oleo-pneumatic suspension system that car hosit adopts decides damping system; Its hydraulic principle is as shown in Figure 1; During the oleo-pneumatic suspension pressurized, the oil in oil cylinder 100 rodless cavities flows to rodless cavity side accumulator 220 through damping hole 210, and the oil in the rod chamber side accumulator 320 flows to rod chamber through damping hole 310 and check valve 330; And when oleo-pneumatic suspension was in extended travel, the oil in the cylinder rod chamber flowed back to rod chamber side accumulator through damping hole 310, and the oil in the rodless cavity side accumulator flows back to rodless cavity through damping hole 210 and check valve 230.Because the damping of oleo-pneumatic suspension system is constant, can not adjust at any time with road conditions, so reduced the traveling comfort and the safety of mobile crane in translation.
The utility model content
The utility model proposes a kind of change damping oil gas suspension and hoisting crane, and this system can adjust damping parameter at any time, to improve the stationarity and the safety of mobile crane in translation.
On the one hand, the utility model proposes a kind of change damping oil gas suspension, and this system comprises oil cylinder, first damping hole, first check valve, first accumulator and second damping hole, second check valve and second accumulator; Wherein said oil cylinder comprises rodless cavity and rod chamber; Said first damping hole, one end is connected with said rodless cavity, and the other end is connected with said first accumulator; The oil inlet of said first check valve is connected with said first accumulator, and oil outlet is connected with said rodless cavity; One end of said second damping hole is connected with said rod chamber, and the other end is connected with said second accumulator; The oil inlet of said second check valve is connected with said second accumulator, and oil outlet is connected with said rod chamber; Said oleo-pneumatic suspension system also comprises first electrohydraulic servo valve, and its oil inlet is connected with said rodless cavity, and oil outlet is connected with said first accumulator.
Further, said oleo-pneumatic suspension system also comprises second electrohydraulic servo valve, and its oil inlet is connected with said rod chamber, and oil outlet is connected with said second accumulator.
Further, said oleo-pneumatic suspension system also comprises the controller that is electrically connected with the control end of said first electrohydraulic servo valve and second electrohydraulic servo valve, the spool aperture that is used to regulate first electrohydraulic servo valve and second electrohydraulic servo valve.
Further, said controller comprises a parameter setup unit, is used to set the spool aperture of first electrohydraulic servo valve and second electrohydraulic servo valve.
Further, said controller is the PLC controller.
Further, be connected for closed loop between said controller and said first electrohydraulic servo valve.
Further, be connected for closed loop between said controller and said second electrohydraulic servo valve.
The utility model is regulated the damping of oleo-pneumatic suspension system at the other parallelly connected electrohydraulic servo valve of damping hole through the spool aperture of regulating electrohydraulic servo valve, can make car hosit smooth-ride under different road conditions.
On the other hand, the utility model also proposes a kind of hoisting crane, comprises body and is connected in the oleo-pneumatic suspension system of said body, and said oleo-pneumatic suspension system is above-mentioned each described change damping oil gas suspension.
Because the oleo-pneumatic suspension system in the utility model is identical with above-mentioned change damping oil gas suspension structure, so have its all technique effects.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing oleo-pneumatic suspension system;
Fig. 2 becomes the structured flowchart of damping oil gas suspension embodiment for the utility model;
Fig. 3 becomes the structural representation of damping oil gas suspension embodiment for the utility model.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The oleo-pneumatic suspension system embodiment:
Referring to Fig. 2, Fig. 3, Fig. 2 is the structured flowchart of the utility model change damping oil gas suspension embodiment, and Fig. 3 is the structural representation that the utility model becomes damping oil gas suspension embodiment.
As shown in the figure, this system comprises oil cylinder 100, first damping hole 210, first check valve 230, first electrohydraulic servo valve 240, first accumulator 220 and second damping hole 310, second check valve 330 and second accumulator 320.Wherein oil cylinder 100 comprises rodless cavity 110 and rod chamber 120.First damping hole 210, first check valve 230 and 240 parallel connections of first electrohydraulic servo valve, the end after the parallel connection is connected with rodless cavity 110, and the other end is connected with first accumulator 220.Wherein: the oil inlet of first check valve 230 is connected with first accumulator 220, and oil outlet is connected with rodless cavity 110, control agent oil from first accumulator 220 to rodless cavity 110 nonreturn floies.The oil inlet P of first electrohydraulic servo valve 240 is connected with rodless cavity 110, and oil outlet A is connected with first accumulator 220, and after the energising, oil flows to first accumulator 220 from rodless cavity 110 in first electrohydraulic servo valve 240. Second damping hole 310 and 330 parallel connections of second check valve, the end after the parallel connection is connected with rod chamber 120, and the other end is connected with second accumulator 320.Wherein: the oil inlet of second check valve 330 is connected with second accumulator 320, and oil outlet is connected with rod chamber 120, control agent oil from second accumulator 320 to rod chamber 120 nonreturn floies.The utility model embodiment is through regulating the spool aperture of first electrohydraulic servo valve 240, and the oil during control oleo-pneumatic suspension pressurized in the oil cylinder rodless cavity 110 flows into the speed of first energy storage 220, and the system damping under this state can be regulated continuously.
Preferably, the oleo-pneumatic suspension system comprises that also second electrohydraulic servo valve, 340, the second electrohydraulic servo valves 340 are parallelly connected with second damping hole 310 and second check valve 330, and the end after the parallel connection is communicated with rod chamber 120, and the other end is communicated with second accumulator 320.Wherein the oil inlet P of second electrohydraulic servo valve 340 is connected with rod chamber 120, and oil outlet A is connected with second accumulator 320, and after the energising, the oil in second electrohydraulic servo valve 340 flows to second accumulator 320 from rod chamber 120.This system is through regulating the spool aperture of second electrohydraulic servo valve 340, and the oil when controlling oleo-pneumatic suspension and stretching in the cylinder rod chamber 120 flows into the speed of second accumulator, and system damping can be regulated continuously.
It should be appreciated by those skilled in the art that in the specific implementation, be interconnected through pipeline between each parts of oleo-pneumatic suspension system.The diameter of first damping hole 210 and second damping hole 310 can influence the flowing velocity of oil, and then influences the damping of oleo-pneumatic suspension system, so in the implementation process, can select the damping hole of different sizes according to actual needs.
Preferably, the utility model oleo-pneumatic suspension system also comprises a controller, and controller is electrically connected with the control end of first electrohydraulic servo valve 240 and second electrohydraulic servo valve 340, through the regulating spool aperture damping of oleo-pneumatic suspension system is regulated.Further preferably, controller comprises a parameter setup unit, sets the spool aperture of first electrohydraulic servo valve 240 and second electrohydraulic servo valve 340 through the parameter setup unit.During practical implementation, also can carry out remote parameter to controller and set through computing machine.
Preferably, between controller and first electrohydraulic servo valve 240 and second electrohydraulic servo valve 340 for closed loop is connected, in order to realize the closed loop control between the two.It will be understood by those skilled in the art that the closed loop connection needs two connection lines, wherein one is used for controller collection electro-hydraulic servo valve core aperture, and another is used for controller sends control command from the regulating spool aperture to electrohydraulic servo valve.Close-loop control mode is specially: the spool aperture expected value of setting first electrohydraulic servo valve 240 and second electrohydraulic servo valve 340 earlier through the parameter setup unit; Controller is gathered the spool aperture of two electrohydraulic servo valves in real time then; And collection result and expected value compared; According to comparing difference, make the spool aperture reach expected value to the electrohydraulic servo valve sending controling instruction.
Wherein, controller can be the PLC controller, also can be the controller of other types, and the utility model is not done any qualification to this.
The utility model oleo-pneumatic suspension system has added electrohydraulic servo valve in the oil circuit of existing oleo-pneumatic suspension system; Electrohydraulic servo valve is parallelly connected with damping hole and check valve; And pass through the spool aperture that controller is controlled electrohydraulic servo valve, so that the damping of this system can be regulated continuously.During the oleo-pneumatic suspension pressurized, controller flows into the speed of first energy storage through the oil in first electrohydraulic servo valve control rodless cavity; When oleo-pneumatic suspension stretched, controller flowed into the speed of second accumulator through the oil in second electrohydraulic servo valve control rod chamber, made the car hosit can steady, safe going under different road conditions.
Hoisting crane embodiment:
Present embodiment proposes a kind of hoisting crane, and this hoisting crane comprises body and the oleo-pneumatic suspension system that is connected with body, and wherein the structure of oleo-pneumatic suspension system gets final product with reference to above-mentioned explanation, and present embodiment repeats no more at this.
Because the oleo-pneumatic suspension system in the present embodiment is above-mentioned change damping oil gas suspension,, present embodiment produces effect so having the institute that becomes damping oil gas suspension.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (8)
1. one kind becomes damping oil gas suspension, comprises oil cylinder (100), first damping hole (210), first check valve (230), first accumulator (220) and second damping hole (310), second check valve (330) and second accumulator (320); Wherein
Said oil cylinder (100) comprises rodless cavity (110) and rod chamber (120);
One end of said first damping hole (210) is connected with said rodless cavity (110), and the other end is connected with said first accumulator (220);
The oil inlet of said first check valve (230) is connected with said first accumulator (220), and oil outlet is connected with said rodless cavity (110);
One end of said second damping hole (310) is connected with said rod chamber (120), and the other end is connected with said second accumulator (320);
The oil inlet of said second check valve (330) is connected with said second accumulator (320), and oil outlet is connected with said rod chamber (120);
It is characterized in that:
Also comprise first electrohydraulic servo valve (240); Wherein
The oil inlet of said first electrohydraulic servo valve (240) is connected with said rodless cavity (110), and oil outlet is connected with said first accumulator (220).
2. change damping oil gas suspension according to claim 1 is characterized in that: also comprise second electrohydraulic servo valve (340); Wherein
The oil inlet of said second electrohydraulic servo valve (340) is connected with said rod chamber (120), and oil outlet is connected with said second accumulator (320).
3. change damping oil gas suspension according to claim 2; It is characterized in that: also comprise the controller that is electrically connected with the control end of said first electrohydraulic servo valve (240) and second electrohydraulic servo valve (340), the spool aperture that is used to regulate first electrohydraulic servo valve (240) and second electrohydraulic servo valve (340).
4. change damping oil gas suspension according to claim 3, it is characterized in that: said controller also comprises a parameter setup unit, is used to set the spool aperture of said first electrohydraulic servo valve (240) and second electrohydraulic servo valve (340).
5. change damping oil gas suspension according to claim 4, it is characterized in that: said controller is the PLC controller.
6. according to the change damping oil gas suspension described in the claim 3-5, it is characterized in that: be connected for closed loop between said controller and said first electrohydraulic servo valve.
7. according to the change damping oil gas suspension described in the claim 6, it is characterized in that: be connected for closed loop between said controller and said second electrohydraulic servo valve.
8. hoisting crane comprises body and the oleo-pneumatic suspension system that is connected in said body, it is characterized in that: said oleo-pneumatic suspension system is each described change damping oil gas suspension among the claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200701205U CN202507887U (en) | 2012-02-29 | 2012-02-29 | Variable damping oil gas suspension system and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200701205U CN202507887U (en) | 2012-02-29 | 2012-02-29 | Variable damping oil gas suspension system and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202507887U true CN202507887U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200701205U Expired - Fee Related CN202507887U (en) | 2012-02-29 | 2012-02-29 | Variable damping oil gas suspension system and crane |
Country Status (1)
| Country | Link |
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| CN (1) | CN202507887U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042893A (en) * | 2012-12-27 | 2013-04-17 | 三一重工股份有限公司 | Oil gas suspension system and engineering vehicle |
| CN104442267A (en) * | 2014-11-10 | 2015-03-25 | 三一汽车起重机械有限公司 | Oil gas suspension system, engineering vehicle and crane |
| CN106286684A (en) * | 2016-10-27 | 2017-01-04 | 安徽柳工起重机有限公司 | Alterable height stiffness helix spring suspension system can drop |
| CN106379128A (en) * | 2016-10-25 | 2017-02-08 | 张家口舒狮汽车科技有限公司 | Vehicle suspension and vehicle |
| CN110303845A (en) * | 2019-05-31 | 2019-10-08 | 中国北方车辆研究所 | A kind of rocker arm suspension back pressure chamber carrying buffer unit |
| CN111120715A (en) * | 2019-11-19 | 2020-05-08 | 北京理工大学 | Electromagnetic valve pressure buffering device and pressure buffering method |
-
2012
- 2012-02-29 CN CN2012200701205U patent/CN202507887U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042893A (en) * | 2012-12-27 | 2013-04-17 | 三一重工股份有限公司 | Oil gas suspension system and engineering vehicle |
| CN104442267A (en) * | 2014-11-10 | 2015-03-25 | 三一汽车起重机械有限公司 | Oil gas suspension system, engineering vehicle and crane |
| CN106379128A (en) * | 2016-10-25 | 2017-02-08 | 张家口舒狮汽车科技有限公司 | Vehicle suspension and vehicle |
| CN106379128B (en) * | 2016-10-25 | 2019-04-26 | 张家口舒狮汽车科技有限公司 | Vehicle suspension and vehicle |
| CN106286684A (en) * | 2016-10-27 | 2017-01-04 | 安徽柳工起重机有限公司 | Alterable height stiffness helix spring suspension system can drop |
| CN110303845A (en) * | 2019-05-31 | 2019-10-08 | 中国北方车辆研究所 | A kind of rocker arm suspension back pressure chamber carrying buffer unit |
| CN111120715A (en) * | 2019-11-19 | 2020-05-08 | 北京理工大学 | Electromagnetic valve pressure buffering device and pressure buffering method |
| CN111120715B (en) * | 2019-11-19 | 2021-01-01 | 北京理工大学 | Electromagnetic valve pressure buffering device and pressure buffering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20150229 |
|
| EXPY | Termination of patent right or utility model |