CN203835851U - Hydraulic operating control system used for excavator and having crushing and quick replacing functions - Google Patents
Hydraulic operating control system used for excavator and having crushing and quick replacing functions Download PDFInfo
- Publication number
- CN203835851U CN203835851U CN201420255169.7U CN201420255169U CN203835851U CN 203835851 U CN203835851 U CN 203835851U CN 201420255169 U CN201420255169 U CN 201420255169U CN 203835851 U CN203835851 U CN 203835851U
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- broken
- mouth
- way valve
- valve
- oil cylinder
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Abstract
The utility model discloses a hydraulic operating control system used for an excavator and having crushing and quick replacing functions. Two three-way valves are arranged in a crushing control oil circuit. Each three-way valve comprises a port P, a port A and a port B and has three valve positions, wherein when the three-way valve is at one valve position, the port P is communicated with the port A; when the three-way valve is at another valve position, the port P is communicated with the port B; when the three-way valve is at the other valve position, the port P is not communicated with the port A and the port B. The ports P of the two three-way valves are connected into a crushing working oil circuit respectively, and the port A and the port B of each three-way valve are connected with a port of a crushing oil cylinder and a cavity of a quick replacing oil cylinder respectively. According to the hydraulic operating control system, the existing crushing control oil circuit is utilized, and the quick replacing oil cylinder is connected into the crushing control oil circuit through the two three-way valves; since the special connection mode is adopted, the crushing control oil circuit can control the quick replacing oil cylinder and the crushing oil cylinder to work respectively; besides, when one oil cylinder works, the other oil cylinder must be in a stop state, so danger caused by synchronous working of the two oil cylinders due to misoperation can not happen, and the safety performance of the hydraulic operating control system is good.
Description
Technical field
The utility model relates to a kind of hydraulic control system of excavator.
Background technique
At present, the equipment annex fast shifter that small-sized and micro hydraulic excavator is equipped with both at home and abroad, there are two kinds of structures of mechanical type and hydraulic type, because the fast shifter of hydraulic type structure can be changed equipment by hydraulic operation, hydraulic pressure quick change do not need manpower to handle, so more can obtain user's approval.
Existing hydraulic pressure quick change control system mainly relies on 26 logical automatically controlled selector valves to realize switching and the control of oil circuit, this hydraulic control system cost is higher, complex structure, and the spool of automatically controlled selector valve affected by the turbidity test of hydraulic oil larger, easily generation is stuck, even burns out the fault of electromagnetic coil.
Model utility content
The technical problems to be solved in the utility model is: the fragmentation of the excavator that a kind of Security is good and the hydraulic control system system of quick change are provided.
The utility model comprises broken oil cylinder and quick changing oil cylinder, broken oil cylinder has high pressure filler opening and low pressure return opening, quick changing oil cylinder has rodless cavity and rod chamber, high pressure filler opening and the low pressure return opening of broken oil cylinder are connected in broken oil circuit control, broken oil circuit control is switchable oil feeding line, in described broken oil circuit control, be provided with two three-way valve, three-way valve comprises P, tri-mouths of A and B, three-way valve has the logical A mouth of P mouth, three valve position that the logical B mouth of P mouth and P mouth all do not communicate with two mouthfuls of AB, the P mouth of two three-way valve is connected on respectively in broken working oil path, the AB mouth of each three-way valve connects a chamber of mouth and the quick changing oil cylinder of broken oil cylinder separately.
The rodless cavity of described quick changing oil cylinder connects the B mouth of the first three-way valve, the rodless cavity of quick changing oil cylinder is provided with first throttle valve with the oil circuit that the B mouth of the first three-way valve is connected, the rod chamber of described quick changing oil cylinder connects the B mouth of the second three-way valve, and the rod chamber of quick changing oil cylinder is provided with the second throttle valve with the oil circuit that the B mouth of the second three-way valve is connected.Throttle valve has been buffer function, and the needed flow of quick changing oil cylinder, much smaller than broken oil cylinder, can play buffer function so increase throttle valve, makes quick changing oil cylinder stable working.
For the ease of switching the flow direction of oil in broken oil circuit control, described broken oil circuit control comprises broken valve block, broken pilot-actuated valve, fuel supply line and return tube, the selector valve that broken valve block is hydraulic control, the actuator port of broken valve block is provided with skimmer circuit, broken pilot-actuated valve is connected with the control port of broken valve block by pilot control oil circuit, the P mouth of the first three-way valve, the P mouth of the second three-way valve, fuel supply line and return tube are all connected on broken valve block, broken valve block is for switching P mouth and the P mouth of the second three-way valve and being communicated with of fuel supply line and return tube of the first three-way valve.
For easy to operate, described three-way valve is tee ball valve.
The beneficial effects of the utility model are: the utility model utilizes existing broken oil circuit control, by two three-way valve, quick changing oil cylinder is linked into broken oil circuit control, owing to adopting special Placement, make broken oil circuit control can control respectively quick changing oil cylinder and broken oil cylinder work, and while making a job, another must be in halted state, can not cause harm because misoperation makes the two synchronous working, and Security is good.
Accompanying drawing explanation
Fig. 1 is flow chart of the present utility model;
In figure: 1, broken pilot-actuated valve; 2, fuel supply line; 3, broken valve block; 4, return tube; 5, the first three-way valve, 6, first throttle valve, 7, quick changing oil cylinder, the 8, second throttle valve, 9, broken oil cylinder, the 10, second three-way valve.
Embodiment
A kind of specific embodiment as shown in Figure 1, it comprises broken oil cylinder 9 and quick changing oil cylinder 7, broken oil cylinder 9 has high pressure filler opening and low pressure return opening, quick changing oil cylinder 7 has rodless cavity and rod chamber, the rod chamber of oil cylinder refers to a chamber at piston rod place, and oil cylinder rodless cavity refers to a chamber that deviates from piston rod.High pressure filler opening and the low pressure return opening of broken oil cylinder 9 are connected in broken oil circuit control, broken oil circuit control is switchable oil feeding line, in this specific embodiment, broken oil circuit control adopts prior art, broken oil circuit control comprises broken valve block 3, broken pilot-actuated valve 1, fuel supply line 2 and return tube 4, the actuator port of broken valve block 3 is provided with skimmer circuit, broken valve block 3 is the selector valve of hydraulic control, broken pilot-actuated valve 1 is connected with the control port of broken valve block 3 by pilot control oil circuit, thereby the valve position of controlled fragmentation valve block 3 changes.
In broken oil circuit control, be provided with the first three-way valve 5 and the second three-way valve 10, by the first three-way valve 5 and the second three-way valve 10, broken oil cylinder 9 and quick changing oil cylinder 7 are accessed to broken oil circuit control, three-way valve comprises P, tri-mouths of A and B, three-way valve has the logical A mouth of P mouth, three valve position that the logical B mouth of P mouth and P mouth all do not communicate with two mouthfuls of AB, the rodless cavity of quick changing oil cylinder 7 connects the B mouth of the first three-way valve 5, the rodless cavity of quick changing oil cylinder 7 is provided with first throttle valve 6 with the oil circuit that the B mouth of the first three-way valve 5 is connected, the rod chamber of quick changing oil cylinder 7 connects the B mouth of the second three-way valve 10, the rod chamber of quick changing oil cylinder 7 is provided with the second throttle valve 8 with the oil circuit that the B mouth of the second three-way valve 10 is connected.The high pressure filler opening of broken oil cylinder 9 connects the A mouth of the first three-way valve 5, and the low pressure return opening of broken oil cylinder 9 connects the A mouth of the second three-way valve 10.
The P mouth of the first three-way valve 5, the P mouth of the second three-way valve 10, fuel supply line 2 and return tube 4 are all connected on broken valve block 3, broken valve block 3 is for switching P mouth and the P mouth of the second three-way valve 10 and being communicated with of fuel supply line 2 and return tube 4 of the first three-way valve 5, be that broken valve block 3 has P mouth and the fuel supply line 2 that is communicated with the first three-way valve 5 and the valve position that is simultaneously communicated with P mouth and the return tube 4 of the second three-way valve 10, broken valve block 3 has P mouth and the return tube 4 that is communicated with the first three-way valve 5 and the valve position that is simultaneously communicated with P mouth and the fuel supply line 2 of the second three-way valve 10, two kinds of valve position can be by broken pilot-actuated valve 1 by switching.
The first three-way valve 5 and the second three-way valve 10 can adopt tee ball valve.
Working principle:
Broken oil cylinder 9 is for controlling digging machine disintegrating hammer, and quick changing oil cylinder 7 is for controlling the fast shifter of excavator.
1, when excavator uses quartering hammer, first handle the first three-way valve 5 and the second three-way valve 10, the PA mouth of the first three-way valve 5 is communicated with, the PA mouth of the second three-way valve 10 is communicated with perforation; Then handle broken pilot-actuated valve 1, make pilot control oil circuit promote broken valve block 3 and switch, the P mouth of fuel supply line 2 and the first three-way valve is communicated with, and return tube 4 is communicated with the P mouth of the second three-way valve 10, pressure oil enters broken oil cylinder 9, promotes from return tube 4, to flow out after quartering hammer work; When handling broken pilot-actuated valve 1 in the other direction, pilot control oil circuit promotes broken valve block 3 and switches to another direction, whole oil circuit reverse direction operation, and now pressure oil cannot enter broken oil cylinder 9, broken oil cylinder 9 is not worked, and pressure oil flows back to fuel tank by the skimmer circuit of broken valve block 3; When stopping using quartering hammer, handle the first three-way valve 5 and the second three-way valve 10, make its spool be parked in meta, cut off all oil circuits.
2, when using hydraulic pressure quick change to change equipment annex, while being fast shifter work, handle the first three-way valve 5 and the second three-way valve 10, the PB mouth of the first three-way valve 5 is communicated with, the PB mouth of the second three-way valve 10 is communicated with, handle broken pilot-actuated valve 1, making pilot control oil circuit promote broken valve block 3 switches, the P mouth of fuel supply line 2 and the first three-way valve 5 is communicated with, the P mouth of return tube 4 and the second three-way valve is communicated with, and now pressure oil enters quick changing oil cylinder 7, and flows out from return tube 4, now quick changing oil cylinder 7 stretches out, and makes fast shifter work.When handling broken pilot-actuated valve 1 in the other direction, pilot control oil circuit promotes broken valve 3 and switches, and the P mouth of fuel supply line 2 and the second three-way valve 10 is communicated with, and return tube 4 is communicated with the P mouth of the first three-way valve 5, oil circuit reverse direction operation, and now quick changing oil cylinder 7 is retracted.
3, when using hydraulic pressure quick change to change after work device fitting, handle the first three-way valve 5 and the second three-way valve 10, make its spool be parked in meta, cut off all oil circuits.
Claims (4)
1. the hydraulic control system system of the fragmentation of an excavator and quick change, comprise broken oil cylinder and quick changing oil cylinder, broken oil cylinder has high pressure filler opening and low pressure return opening, quick changing oil cylinder has rodless cavity and rod chamber, high pressure filler opening and the low pressure return opening of broken oil cylinder are connected in broken oil circuit control, broken oil circuit control is switchable oil feeding line, it is characterized in that: in described broken oil circuit control, be provided with two three-way valve, three-way valve comprises P, tri-mouths of A and B, three-way valve has the logical A mouth of P mouth, three valve position that the logical B mouth of P mouth and P mouth all do not communicate with two mouthfuls of AB, the P mouth of two three-way valve is connected on respectively in broken oil circuit control, the AB mouth of each three-way valve connects a chamber of mouth and the quick changing oil cylinder of broken oil cylinder separately.
2. the hydraulic control system system of the fragmentation of excavator according to claim 1 and quick change, it is characterized in that: the rodless cavity of described quick changing oil cylinder connects the B mouth of the first three-way valve, the rodless cavity of quick changing oil cylinder is provided with first throttle valve with the oil circuit that the B mouth of the first three-way valve is connected, the rod chamber of described quick changing oil cylinder connects the B mouth of the second three-way valve, and the rod chamber of quick changing oil cylinder is provided with the second throttle valve with the oil circuit that the B mouth of the second three-way valve is connected.
3. the hydraulic control system system of the fragmentation of excavator according to claim 1 and 2 and quick change, it is characterized in that: described broken oil circuit control comprises broken valve block, broken pilot-actuated valve, fuel supply line and return tube, the actuator port of broken valve block is provided with skimmer circuit, the selector valve that broken valve block is hydraulic control, broken pilot-actuated valve is connected with the control port of broken valve block by pilot control oil circuit, the P mouth of the first three-way valve, the P mouth of the second three-way valve, fuel supply line and return tube are all connected on broken valve block, broken valve block is for switching P mouth and the P mouth of the second three-way valve and being communicated with of fuel supply line and return tube of the first three-way valve.
4. the hydraulic control system system of the fragmentation of excavator according to claim 3 and quick change, is characterized in that: described three-way valve is tee ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255169.7U CN203835851U (en) | 2014-05-19 | 2014-05-19 | Hydraulic operating control system used for excavator and having crushing and quick replacing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255169.7U CN203835851U (en) | 2014-05-19 | 2014-05-19 | Hydraulic operating control system used for excavator and having crushing and quick replacing functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835851U true CN203835851U (en) | 2014-09-17 |
Family
ID=51513698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255169.7U Expired - Fee Related CN203835851U (en) | 2014-05-19 | 2014-05-19 | Hydraulic operating control system used for excavator and having crushing and quick replacing functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402178A (en) * | 2015-12-30 | 2016-03-16 | 中国铁建重工集团有限公司 | Closed type hydraulic system and vehicle comprising same |
| CN114352592A (en) * | 2022-01-24 | 2022-04-15 | 三一重机有限公司 | Hydraulic control system and working machine |
-
2014
- 2014-05-19 CN CN201420255169.7U patent/CN203835851U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402178A (en) * | 2015-12-30 | 2016-03-16 | 中国铁建重工集团有限公司 | Closed type hydraulic system and vehicle comprising same |
| CN114352592A (en) * | 2022-01-24 | 2022-04-15 | 三一重机有限公司 | Hydraulic control system and working machine |
| CN114352592B (en) * | 2022-01-24 | 2023-09-22 | 三一重机有限公司 | Hydraulic control system and working machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20180519 |