CN207161409U - Combining hydraulic system in load-sensitive valve - Google Patents
Combining hydraulic system in load-sensitive valve Download PDFInfo
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- CN207161409U CN207161409U CN201720912337.9U CN201720912337U CN207161409U CN 207161409 U CN207161409 U CN 207161409U CN 201720912337 U CN201720912337 U CN 201720912337U CN 207161409 U CN207161409 U CN 207161409U
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Abstract
Combining hydraulic system in a kind of load-sensitive valve is the utility model is related to, it is characterized in that：Including hydraulic oil container, load-reacting pump, load-sensitive proportional multi-way valve, hydraulic jack, hydraulic motor and constant displacement pump, the inlet port of load-reacting pump is connected with hydraulic oil container, the oil-out of load-reacting pump, LS mouths P1 mouths with load-sensitive proportional multi-way valve respectively, LS mouths are connected, the inlet port of constant displacement pump is connected with hydraulic oil container, the oil-out of constant displacement pump is connected with the P2 mouths of load-sensitive proportional multi-way valve, the A1 mouths of load-sensitive proportional multi-way valve, the B1 mouths rodless cavity with hydraulic jack respectively, rod chamber is connected, the A2 mouths of load-sensitive proportional multi-way valve, B2 mouths are connected with the inlet and outlet of hydraulic motor respectively, the R1 mouths of load-sensitive proportional multi-way valve, R2 mouths, T mouths, and the drain tap of hydraulic motor is connected with hydraulic oil container.The utility model realizes that variable pump collaborates with constant displacement pump in load-sensitive proportional multi-way valve using the loop of load-sensitive proportional multi-way valve composition.
Description
Technical field
Combining hydraulic system in a kind of load-sensitive valve is the utility model is related to, especially a kind of variable pump and constant displacement pump
Converging system in valve, belongs to technical field of hydraulic equipment.
Background technology
Hydraulic system is divided into open system, the major class of closed system two, and wherein open system is divided into variable pump systems and determined again
Measure pumping system.Due to the limitation of hydraulic pump discharge, when demand big flow works, often using more pump converging systems.Mesh
The converging system of preceding main flow is divided into two kinds, collaborates before valve（As shown in Figure 3）, collaborate after valve（As shown in Figure 4）.
During using collaborating before valve, it is all variable pump or constant displacement pump that double pump, which must be,.Interflow is not required pump after valve, but
It is that a reversal valve must be set more.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided interflow liquid in a kind of load-sensitive valve
Pressure system, use load-sensitive proportional multi-way valve simple in construction, ingenious, rational, use the load-sensitive proportional multi-path valve group
Into loop realize that variable pump collaborates in load-sensitive proportional multi-way valve with constant displacement pump.
According to technical scheme provided by the utility model, combining hydraulic system in a kind of load-sensitive valve, it is characterized in that：Bag
Hydraulic oil container, load-reacting pump, load-sensitive proportional multi-way valve, hydraulic jack, hydraulic motor and constant displacement pump are included, load is quick
The inlet port of sense variable pump is connected with hydraulic oil container, the oil-out of load-reacting pump, LS mouths respectively with load-sensitive ratio
P1 mouths, the LS mouths of banked direction control valves are connected, and the inlet port of constant displacement pump is connected with hydraulic oil container, oil-out and the load-sensitive ratio of constant displacement pump
The P2 mouths of example banked direction control valves are connected, the A1 mouths of load-sensitive proportional multi-way valve, B1 mouths respectively the rodless cavity with hydraulic jack, have bar
Chamber is connected, and A2 mouths, the B2 mouths of load-sensitive proportional multi-way valve are connected with the inlet and outlet of hydraulic motor respectively, and load-sensitive ratio is more
R1 mouths, R2 mouths, the T mouths of road valve are connected with hydraulic oil container respectively, and the drain tap of hydraulic motor is connected with hydraulic oil container.
Further, the load-sensitive proportional multi-way valve include first segment head piece, high-pressure overflow valve, the first main valve plug,
Second restriction, the first LS pressure limiting valves, the first LS shuttle valves, the first two-way pressure compensator, the first check valve, the second main valve plug,
3rd restriction, the 2nd LS pressure limiting valves, the 2nd LS shuttle valves, the second two-way pressure compensator, the second check valve, the 4th restriction,
Three-way pressure compensating device and overflow valve.
Further, the oil inlet of first main valve plug connects the first two-way pressure compensator, and the first two-way pressure is mended
Repay device connection P1 mouths, the first end of high-pressure overflow valve and the entrance point of the first check valve, the oil return opening connection R1 of the first main valve plug
Mouth, the second end of R2 mouths, high-pressure overflow valve and threeway compensator, the first working hole connection A1 mouths of the first main valve plug, the first master
The second working hole connection B1 mouths of valve element；Oil inlet the second two-way pressure compensator of connection of second main valve plug, the two or two
Logical pressure compensator connects the port of export of the first check valve and the port of export of the second check valve, the oil return opening connection of the second main valve plug
R1 mouths, R2 mouths and threeway compensator, threeway compensator connection P2 mouths, the first LS shuttle valves connect the first main valve plug, the 2nd LS shuttle valves
With LS mouths, first segment head piece is provided between the first LS shuttle valves and LS mouths, the 2nd LS shuttle valves connect the second main valve plug and T mouths, and first
LS pressure limiting valves connect the first main valve plug, and the second restriction, the 2nd LS pressure limitings are provided between the first LS pressure limiting valves and the first main valve plug
Valve connects the second main valve plug, and the 3rd restriction is provided between the 2nd LS pressure limiting valves and the second main valve plug, and overflow valve connection threeway is mended
Device is repaid, the 4th restriction is provided between threeway compensator and the second main valve plug.
Compared with prior art, advantage is the utility model：The utility model product structure is simple, reasonable, is not increasing
Variable pump is realized in the case of adding outside reversal valve with constant displacement pump in load-sensitive proportional multi-way valve to collaborate.Carried in unit head
While fast, do not reduce output torque, while the maximized power for utilizing system, improve drilling efficiency.
Brief description of the drawings
Fig. 1 is the schematic diagram of combining hydraulic system in load-sensitive valve described in the utility model.
Fig. 2 is the inside schematic diagram of load-sensitive proportional multi-way valve.
Fig. 3 is the schematic diagram collaborated in the prior art before valve.
Fig. 4 is the schematic diagram collaborated in the prior art after valve.
Description of reference numerals：1- hydraulic oil containers, 2- load-reactings pump, 3- load-sensitives proportional multi-way valve, 4- hydraulic pressure
Oil cylinder, 5- hydraulic motors, 6- constant displacement pumps, 7- first segments head piece, 8- high-pressure overflow valves, the main valve plugs of 9- first, 10- second throttle
Mouth, the LS pressure limiting valves of 11- the first, the LS shuttle valves of 12- the first, the first two-ways of 13- pressure compensator, the check valves of 14- first, 15- second
Main valve plug, the restrictions of 16- the 3rd, the LS pressure limiting valves of 17- the 2nd, the LS shuttle valves of 18- the 2nd, the second two-ways of 19- pressure compensator, 20-
Second check valve, the restrictions of 21- the 4th, 22- three-way pressure compensatings device, 23- overflow valves.
Embodiment
With reference to specific accompanying drawing, the utility model is described in further detail.
As shown in figure 1, combining hydraulic system is quick including hydraulic oil container 1, load in load-sensitive valve described in the utility model
Feel variable pump 2, load-sensitive proportional multi-way valve 3, hydraulic jack 4, hydraulic motor 5 and constant displacement pump 6, load-reacting pump 2
Inlet port is connected with hydraulic oil container 1, the oil-out of load-reacting pump 2, LS mouths respectively with load-sensitive proportional multi-way valve 3
P1 mouths, LS mouths are connected, and the inlet port of constant displacement pump 6 is connected with hydraulic oil container 1, and the oil-out and load-sensitive ratio of constant displacement pump 6 are more
The P2 mouths of road valve 3 are connected, the A1 mouths of load-sensitive proportional multi-way valve 3, B1 mouths respectively the rodless cavity with hydraulic jack 4, have bar
Chamber is connected, and the inlet and outlet of the A2 mouths, B2 mouths of load-sensitive proportional multi-way valve 3 respectively with hydraulic motor 5 are connected, load-sensitive ratio
R1 mouths, R2 mouths, the T mouths of banked direction control valves 3 are connected with hydraulic oil container 1 respectively, and the drain tap of hydraulic motor 5 is connected with hydraulic oil container 1.
The load-sensitive proportional multi-way valve 3 includes first segment head piece 7, high-pressure overflow valve 8, the first main valve plug 9, second section
Head piece 10, the first LS pressure limiting valves 11, the first LS shuttle valves 12, the first two-way pressure compensator 13, the first check valve 14, the second main valve
Core 15, the 3rd restriction 16, the 2nd LS pressure limiting valves 17, the 2nd LS shuttle valves 18, the second two-way pressure compensator 19, the second check valve
20th, the 4th restriction 21, three-way pressure compensating device 22 and overflow valve 23；The oil inlet connection the one or two of first main valve plug 9
Logical pressure compensator 13, the first two-way pressure compensator 13 connection P1 mouths, the first end and the first check valve 14 of high-pressure overflow valve 8
Entrance point, oil return opening connection R1 mouths, R2 mouths, the second end of high-pressure overflow valve 8 and the threeway compensator 22 of the first main valve plug 9,
The first working hole connection A1 mouths of first main valve plug 9, the second working hole connection B1 mouths of the first main valve plug 9；Second main valve
The oil inlet of core 15 connects the second two-way pressure compensator 19, and the second two-way pressure compensator 19 connects going out for the first check valve 14
Mouth end and the port of export of the second check valve 20, oil return opening connection R1 mouths, R2 mouths and the threeway compensator 22 of the second main valve plug 15, three
Logical compensator 22 connects P2 mouths, and the first LS shuttle valves 12 connect the first main valve plug 9, the 2nd LS shuttle valves 18 and LS mouths, the first LS shuttle valves
First segment head piece 7 is provided between 12 and LS mouths, the 2nd LS shuttle valves 18 connect the second main valve plug 15 and T mouths, the first LS pressure limiting valves 11
The first main valve plug 9 is connected, the second restriction 10, the 2nd LS pressure limiting valves are provided between the first LS pressure limiting valves 11 and the first main valve plug 9
17 the second main valve plugs 15 of connection, are provided with the 3rd restriction 16, overflow valve 23 between the 2nd LS pressure limiting valves 17 and the second main valve plug 15
Threeway compensator 22 is connected, the 4th restriction 21 is provided between the main valve plug 15 of threeway compensator 22 and second.
During using utility model works, when hydraulic jack acts, LS pressure feedbacks give load-reacting pump, pump variable
To work alliance oil, now constant displacement pump is from off-load at three-way pressure compensating device；When hydraulic motor works, LS pressure feeds back to simultaneously
Load-reacting pump and threeway compensator, now load-reacting pump and constant displacement pump give hydraulic motor fuel feeding simultaneously, reality
Collaborate in the valve of existing variable pump and constant displacement pump.Wherein the first check valve and the second check valve prevent two pumps from interfering.
The utility model realizes combining hydraulic system in a kind of load-sensitive valve for no-dig technique rig, to traditional
Proportional multi-way valve is improved, and adds check valve and threeway compensator.When some actions of rig are motionless, constant displacement pump is to negative
Sensitive ratio valve fuel feeding is carried, while unit head raises speed, does not reduce output torque, while the maximized work(for utilizing system
Rate, improve drilling efficiency.
Claims (3)
1. combining hydraulic system in a kind of load-sensitive valve, it is characterized in that：Including hydraulic oil container（1）, load-reacting pump
（2）, load-sensitive proportional multi-way valve（3）, hydraulic jack（4）, hydraulic motor（5）And constant displacement pump（6）, load-reacting pump
（2）Inlet port and hydraulic oil container（1）It is connected, load-reacting pump（2）Oil-out, LS mouths respectively with load-sensitive ratio
Banked direction control valves（3）P1 mouths, LS mouths be connected, constant displacement pump（6）Inlet port and hydraulic oil container（1）It is connected, constant displacement pump（6）Oil-out
With load-sensitive proportional multi-way valve（3）P2 mouths be connected, load-sensitive proportional multi-way valve（3）A1 mouths, B1 mouths respectively with liquid
Compressing cylinder（4）Rodless cavity, rod chamber be connected, load-sensitive proportional multi-way valve（3）A2 mouths, B2 mouths respectively with hydraulic motor
（5）Inlet and outlet be connected, load-sensitive proportional multi-way valve（3）R1 mouths, R2 mouths, T mouths respectively with hydraulic oil container（1）It is connected, liquid
Pressure motor（5）Drain tap and hydraulic oil container（1）It is connected.
2. combining hydraulic system in load-sensitive valve as claimed in claim 1, it is characterized in that：The load-sensitive proportional multi-path
Valve（3）Including first segment head piece（7）, high-pressure overflow valve（8）, the first main valve plug（9）, the second restriction（10）, the first LS pressure limitings
Valve（11）, the first LS shuttle valves（12）, the first two-way pressure compensator（13）, the first check valve（14）, the second main valve plug（15）,
Three restrictions（16）, the 2nd LS pressure limiting valves（17）, the 2nd LS shuttle valves（18）, the second two-way pressure compensator（19）, it is second unidirectional
Valve（20）, the 4th restriction（21）, three-way pressure compensating device（22）And overflow valve（23）.
3. combining hydraulic system in load-sensitive valve as claimed in claim 2, it is characterized in that：First main valve plug（9）'s
Oil inlet connects the first two-way pressure compensator（13）, the first two-way pressure compensator（13）Connect P1 mouths, high-pressure overflow valve（8）
First end and the first check valve（14）Entrance point, the first main valve plug（9）Oil return opening connection R1 mouths, R2 mouths, high pressure kicks
Valve（8）The second end and threeway compensator（22）, the first main valve plug（9）The first working hole connection A1 mouths, the first main valve plug（9）
The second working hole connection B1 mouths；Second main valve plug（15）Oil inlet connect the second two-way pressure compensator（19）, the
Two two-way pressure compensators（19）Connect the first check valve（14）The port of export and the second check valve（20）The port of export, second master
Valve element（15）Oil return opening connection R1 mouths, R2 mouths and threeway compensator（22）, threeway compensator（22）Connect P2 mouths, the first LS shuttles
Valve（12）Connect the first main valve plug（9）, the 2nd LS shuttle valves（18）With LS mouths, the first LS shuttle valves（12）First is provided between LS mouths
Restriction（7）, the 2nd LS shuttle valves（18）Connect the second main valve plug（15）With T mouths, the first LS pressure limiting valves（11）Connect the first main valve
Core（9）, the first LS pressure limiting valves（11）With the first main valve plug（9）Between be provided with the second restriction（10）, the 2nd LS pressure limiting valves（17）
Connect the second main valve plug（15）, the 2nd LS pressure limiting valves（17）With the second main valve plug（15）Between be provided with the 3rd restriction（16）, overflow
Flow valve（23）Connect threeway compensator（22）, threeway compensator（22）With the second main valve plug（15）Between be provided with the 4th restriction
（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912337.9U CN207161409U (en) | 2017-07-26 | 2017-07-26 | Combining hydraulic system in load-sensitive valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912337.9U CN207161409U (en) | 2017-07-26 | 2017-07-26 | Combining hydraulic system in load-sensitive valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161409U true CN207161409U (en) | 2018-03-30 |
Family
ID=61714192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720912337.9U Withdrawn - After Issue CN207161409U (en) | 2017-07-26 | 2017-07-26 | Combining hydraulic system in load-sensitive valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161409U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269609A (en) * | 2017-07-26 | 2017-10-20 | 无锡市钻通工程机械有限公司 | Combining hydraulic system in load-sensitive valve |
| CN109707688A (en) * | 2018-12-29 | 2019-05-03 | 中国煤炭科工集团太原研究院有限公司 | A kind of anti-full load sensing multi-way valve of the flow with precondition pressure compensator |
| CN109899329A (en) * | 2019-03-29 | 2019-06-18 | 潍柴动力股份有限公司 | A kind of Ioad-sensing control mechanism and hydraulic system |
-
2017
- 2017-07-26 CN CN201720912337.9U patent/CN207161409U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269609A (en) * | 2017-07-26 | 2017-10-20 | 无锡市钻通工程机械有限公司 | Combining hydraulic system in load-sensitive valve |
| CN107269609B (en) * | 2017-07-26 | 2018-10-26 | 无锡市钻通工程机械有限公司 | Combining hydraulic system in load-sensitive valve |
| CN109707688A (en) * | 2018-12-29 | 2019-05-03 | 中国煤炭科工集团太原研究院有限公司 | A kind of anti-full load sensing multi-way valve of the flow with precondition pressure compensator |
| CN109899329A (en) * | 2019-03-29 | 2019-06-18 | 潍柴动力股份有限公司 | A kind of Ioad-sensing control mechanism and hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180330 Effective date of abandoning: 20181026 |
|
| AV01 | Patent right actively abandoned |