CN103119223B - Quick coupler circuit for construction equipment - Google Patents
Quick coupler circuit for construction equipment Download PDFInfo
- Publication number
- CN103119223B CN103119223B CN201180040039.0A CN201180040039A CN103119223B CN 103119223 B CN103119223 B CN 103119223B CN 201180040039 A CN201180040039 A CN 201180040039A CN 103119223 B CN103119223 B CN 103119223B
- Authority
- CN
- China
- Prior art keywords
- quick connector
- hydraulic cylinder
- fixture
- hydraulic pump
- electromagnetic switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title 1
- 230000008878 coupling Effects 0.000 claims description 27
- 238000010168 coupling process Methods 0.000 claims description 27
- 238000005859 coupling reaction Methods 0.000 claims description 27
- 230000000630 rising effect Effects 0.000 description 17
- 238000009434 installation Methods 0.000 description 7
- 101150006257 rig-4 gene Proteins 0.000 description 7
- 239000000446 fuel Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000002686 lithotriptor Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/365—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with redundant latching means, e.g. for safety purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
Abstract
A switch (15) is configured in such a manner that the switch operates with two options: a lock position for when an attachment is held and an unlock position for when an attachment is released. Further, a control device (16) receives an operation signal that is output when the switch (15) is moved to the lock position or the unlock position and controls switching of a magnetic switching valve (13) so that the pressure in a hydraulic pump begins to increase and so that, after a set time has passed, the pressure in the hydraulic pump stops increasing.
Description
Technical field
The present invention relates to the quick connector loop of the engineering machinery for making the fixture easy assembling disassembling such as scraper bowl or lithotriptor (breaker).The application quotes its content at this based on June 21st, 2010 to the patent application 2010-140514 CLAIM OF PRIORITY of Japanese publication.
Background technology
In the past, as shown in Figure 3, hydraulic crawler excavator (engineering machinery) 1 has: lower traveling body 2, to be arranged on the upper rotating body 3 on lower traveling body 2 and to play the working rig 4 be arranged on freely in upper rotating body 3 along the vertical direction in the mode that can rotate.In addition, working rig 4 has: swing arm 5, and its rear end is rotatably bearing in upper rotating body 3; Dipper 6, its rear end is rotatably bearing in the front end of swing arm 5; With scraper bowl (fixture) 7, it is rotatably arranged on the front of dipper 6, thus working rig 4 is formed as multi-joint shape.And the bar according to operator operates and discharge working oil, and swing arm hydraulic cylinder 8, dipper hydraulic cylinder 9 and bucket hydraulic cylinder 10 (operation executing agency) stretches respectively, and swing arm 5, dipper 6 and scraper bowl 7 rotate respectively.
On the other hand, be known to the engineering machinery 1 that can be formed in the mode of the various fixtures 7 such as the mounting or dismounting of the front end of dipper 6 scraper bowl, lithotriptor, crushing engine (crusher).In this project machinery 1, because fixture 7 is configured to change, thus can more than enough object, multi-functional use an engineering machinery 1.And, be known to there is quick connector loop and by the switching manipulation of operator easily and promptly carry out the engineering machinery 1 of the mounting or dismounting of fixture 7.
Under normal circumstances, quick connector loop (quick connector B) is arranged between the front end of dipper 6 and fixture 7.And quick connector loop has: quick connector hydraulic cylinder, its discharge by working oil is carried out stretching and is made fixture 7 keep or depart from; Hydraulic pump; Electromagnetic switching valve, the direction of the supply of the working oil supplied from hydraulic pump is switched to operation executing agency (swing arm hydraulic cylinder 8, dipper hydraulic cylinder 9, bucket hydraulic cylinder 10) side or quick connector hydraulic cylinder side by it; Coupling transfer valve, it always makes quick connector hydraulic cylinder extension for switch operating oil phase for the supplying party of quick connector hydraulic cylinder; And control device, it carries out switching according to the pilot signal (operation signal) exported by switching manipulation respectively to electromagnetic switching valve and coupling transfer valve and controls (for example, referring to patent document 1).
At first technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2007-327291 publication
Summary of the invention
At this, in order to reliably carry out the expanding-contracting action (mounting or dismounting of fixture 7) of quick connector hydraulic cylinder, need the pump boost operations of being undertaken by operator.Therefore, in above-mentioned quick connector loop in the past, electromagnetic switching valve is employed.And, carry out control to forcing the pilot signal of boosting for pump and force boosting to make hydraulic pump.In addition, about above-mentioned quick connector loop in the past, electromagnetic switching valve and coupling transfer valve carry out switching according to switching manipulation and drive, and in order to control above-mentioned two valves, need three position switch and relay circuit.
That is, in quick connector loop in the past, carried out the control that hydraulic pump is boosted by stacked switch and relay circuit, wherein, switch operates in following three positions: make the operating position that operation executing agency stretches when carrying out operation; Quick connector hydraulic cylinder is made to extend latched position when (or shorten) keeps (installation) fixture 7; Unlocked position when fixture 7 being departed from making quick connector hydraulic cylinder shortening (or elongation).And, when changing fixture 7, use locked, and hydraulic pump boosts all the time during latched position and unlocked position.
Therefore, according to the position of switch, only can carry out making hydraulic pump boost the control that quick connector hydraulic cylinder is elongated or shortened or the control that hydraulic pump is not boosted all the time all the time.That is, uncontrollable boosting time and timing.Its result is, during pump boosting, each operation is unstable with the action of executing agency 8,9,10 (working rig 4).In addition, produce unnecessary pump pressure rising time and fuel efficiency is worsened.
The present invention researches and develops in view of the foregoing, its object is to the quick connector loop providing a kind of engineering machinery, can control time of boosting and timing, and the having stable behavior of working rig in hydraulic pump boosting, can fuel efficiency be improved.
To achieve these goals, the present invention adopts following means.
The quick connector loop of engineering machinery of the present invention is the quick connector loop for making fixture carry out the engineering machinery installed and removed relative to working rig.And quick connector loop of the present invention has: quick connector hydraulic cylinder, it carries out stretching fixture to be held in or separating operation machine; Hydraulic pump; Electromagnetic switching valve, its pressure to hydraulic pump boosting switches; Coupling transfer valve, it always makes quick connector hydraulic cylinder extension drive for switch operating oil phase for the supplying party of quick connector hydraulic cylinder; And control device, it carries out switching respectively to electromagnetic switching valve and coupling transfer valve and controls.In addition, in quick connector loop of the present invention, switch for carrying out handover operation to electromagnetic switching valve and coupling transfer valve operates two positions, and these two positions are: make quick connector hydraulic cylinder extension to keep latched position during fixture; And unlocked position when making quick connector hydraulic cylinder extension to make fixture depart from.In addition, in quick connector loop of the present invention, control device receives operation signal switching manipulation exported to latched position or unlocked position, carries out switching control coupling transfer valve.And in quick connector loop of the present invention, control device is to start the boosting of hydraulic pump and the mode terminating the boosting of hydraulic pump in the stage after the stipulated time is carried out switching to electromagnetic switching valve and controlled by the operation of switch.
Invention effect
In the quick connector loop of engineering machinery of the present invention, the operation signal of switch is passed to electromagnetic switching valve via control device by quick connector loop.Therefore, it is possible to control electromagnetic switching valve carries out the time switching to make hydraulic pump boost.That is, according to operation signal switching manipulation exported to latched position or unlocked position, control device carries out switching to electromagnetic switching valve and controls to make hydraulic pump boost.Then, in the stage after the stipulated time, control device carries out switching control with the boosting terminating hydraulic pump to electromagnetic switching valve, thus can control pump pressure rising time or timing.
Thus, by being operated by the switch operated in these two positions of locked, can be controlled to and only during the action of quick connector hydraulic cylinder, hydraulic pump be boosted.Thus, compared with quick connector loop in the past, can make be Min. pressure rising time, therefore, it is possible to pump is boosted Zhong Ge executing agency (working rig) astatically action situation suppress in Min..In addition, owing to decreasing unnecessary pump pressure rising time, so improve fuel efficiency.
Accompanying drawing explanation
Fig. 1 is the figure in the quick connector loop of the engineering machinery representing an embodiment of the invention.
Fig. 2 is the figure of the variation in the quick connector loop of the engineering machinery representing an embodiment of the invention.
Fig. 3 is the figure representing hydraulic crawler excavator (engineering machinery).
Detailed description of the invention
Below, be described with reference to the quick connector loop of Fig. 1 and Fig. 3 to the engineering machinery of an embodiment of the invention.
The engineering machinery 1 of present embodiment is hydraulic crawler excavator (with reference to Fig. 3), has for making the various fixture 7 such as scraper bowl or lithotriptor easily carry out the quick connector loop A installed and removed in the front end of dipper 6 (working rig).
And, as shown in Figure 1, the quick connector loop A of present embodiment has: quick connector hydraulic cylinder 11, hydraulic pump (such as, variable displacement pump) 12, electromagnetic switching valve (electromagnetic valve) 13, coupling transfer valve 14, switch 15 and control device 16.
Quick connector hydraulic cylinder 11 stretch by the discharge of working oil, be for make fixture 7 keep (installation) in or the parts of front end of disengaging dipper 6.Quick connector hydraulic cylinder 11 is built in the assembling and disassembling device of the front end being arranged on dipper 6, and is arranged between the front end of dipper 6 and fixture 7.In addition, in the quick connector loop A of present embodiment, in the mode that fixture 7 is fixed when quick connector hydraulic cylinder 11 extends, fixture 7 is disassembled when quick connector hydraulic cylinder 11 shrinks, hydraulic piping is connected respectively with the piston chamber 11a of quick connector hydraulic cylinder 11 and piston rod room 11b.
The direction of the supply of the working oil that the hydraulic pump 12 by hydraulic power source can supply by electromagnetic switching valve 13 switches to operation executing agency (swing arm hydraulic cylinder 8, dipper hydraulic cylinder 9, bucket hydraulic cylinder 10) side or quick connector hydraulic cylinder 11 side of working rig 4.Electromagnetic switching valve 13 via hydraulic piping and hydraulic pump 12, each operation executing agency 8,9,10, coupling transfer valve 14 is connected.
Coupling transfer valve 14 is the parts for making quick connector hydraulic cylinder 11 flexible.Coupling transfer valve 14 is connected with quick connector hydraulic cylinder 11 by hydraulic piping, can switch the working oil that supplies from hydraulic pump 12 relative to the direction of the supply of quick connector hydraulic cylinder 11.
When changing (mounting or dismounting) fixture 7, operator uses switch 15 when switching electromagnetic switching valve 13 and coupling transfer valve 14.Switch 15 uses wire harness (wire harness) and is connected with control device 16.In addition, the switch 15 of present embodiment operates in following two positions: make quick connector hydraulic cylinder 11 extend latched position when keeping fixture 7; And make quick connector hydraulic cylinder 11 shorten unlocked position when dismantling fixture 7.
Control device 16 switches for carrying out respectively electromagnetic switching valve 13 and coupling transfer valve 14 parts controlled.Control device 16 uses wire harness and is connected with electromagnetic switching valve 13, coupling transfer valve 14 respectively.The control device 16 of present embodiment receives the signal exported by switch 15 being operated to latched position or unlocked position, carries out switching control coupling transfer valve 14.In addition, control device 16 pairs of electromagnetic switching valves of present embodiment carry out switching and control, to make start the boosting of hydraulic pump 12 according to the operation of switch 15 and terminate the boosting of hydraulic pump 12 in the stage after the stipulated time.
When the rapid switching valve loop A by present embodiment changes (mounting or dismounting) fixture 7, first, operator operates bar, and operation executing agency 8,9,10 is driven.Then, the fixture 7 being arranged on the front end of dipper 6 is configured in assigned position.
Next, when switch 15 is operated to unlocked position by operator, operation signal inputs to control device 16.Then, according to this operation signal from control device 16 respectively to electromagnetic switching valve 13 and coupling transfer valve 14 output switching signal.Then, according to the switching signal exported from control device 16, electromagnetic switching valve 13 switches, and hydraulic pump 12 boosts.In addition, according to the switching signal exported from control device 16, coupling transfer valve 14 switches, and discharge working oil shortens to make quick connector hydraulic cylinder 11.By making quick connector hydraulic cylinder 11 shorten, the hold mode being arranged on the fixture 7 of the front end of dipper 6 is removed, and fixture 7 departs from from the front end of dipper 6.
In addition, in the present embodiment, undertaken by control device 16 pairs of electromagnetic switching valves 13 switching control after (operator by switching manipulation to unlocked position after), in the stage after the stipulated time of such as about 10 seconds, carry out switching to electromagnetic switching valve 13 to control, the boosting of hydraulic pump 12 terminates.That is, when operator by switching manipulation to unlocked position, quick connector hydraulic cylinder 11 shorten thus fixture 7 departs from from the front end of dipper 6 time, automatically carry out switchings control to electromagnetic switching valve 13 by control device 16, hydraulic recovery is to positive normal pressure during operation.
Thus, do not exist as quick connector loop in the past, if switch 15 is operated to unlocked position by operator, boost the situation that quick connector hydraulic cylinder 11 is shortened all the time.Therefore, Min. is become the pressure rising time of hydraulic pump 12.Therefore, when making each operation executing agency 8,9,10 drive, the situation of action astatically is also suppressed in Min..In addition, unnecessary pump pressure rising time can be cut down.
Next, when new fixture 7 is installed to the front end of dipper 6, first, working rig 4 is made to drive assigned position new fixture 7 to be configured in the front of dipper 6 by the operation of the bar of operator.Now, due to each operation executing agency 8,9,10 stably action, so the front of dipper 6 can be configured in assigned position well.
Then, under the state that the front of dipper 6 is configured at assigned position, operator by switching manipulation to latched position.Thus, operation signal inputs to control device 16, according to this operation signal from control device 16 respectively to electromagnetic switching valve 13 and coupling transfer valve 14 output switching signal.According to the switching signal exported from control device 16, hydraulic pump 12 boosts.In addition, according to the switching signal exported from control device 16, coupling transfer valve 14 switches, and discharge working oil extends to make quick connector hydraulic cylinder 11.And by making quick connector hydraulic cylinder 11 extend, connecting pin or the voussoir of new fixture 7 are fastened, new fixture 7 links with the front end of dipper 6 and keeps (installation).
In addition, when installing fixture 7, also undertaken by control device 16 pairs of electromagnetic switching valves 13 switching control after (operator by switching manipulation to latched position after), in the stage after the stipulated time of such as about 10 seconds, carry out switching to electromagnetic switching valve 13 to control, the boosting of hydraulic pump 12 terminates.That is, when operator by switching manipulation to latched position, quick connector hydraulic cylinder 11 extend thus fixture 7 is arranged on the front end of dipper 6 time, automatically carry out switchings control to electromagnetic switching valve 13 by control device 16, hydraulic recovery is to positive normal pressure during operation.
Therefore, if do not exist, switch 15 is operated to latched position, the situation that the boosting carrying out hydraulic pump 12 is all the time extended to make quick connector hydraulic cylinder 11.Therefore, the boosting of hydraulic pump 12 was carried out with minimal pressure rising time.Thus, when the installation of fixture 7, when making each operation executing agency 8,9,10 drive, the situation of each operation executing agency 8,9,10 action astatically is also suppressed in Min..In addition, unnecessary pump pressure rising time can be cut down.
In addition, when installing fixture 7, also can be carry out electromagnetic switching valve 13 switching control and make hydraulic recovery arrive operation time positive normal pressure after, after the stipulated time of such as about 5 seconds, drive operation executing agency 8,9,10 by control device 16.In this case, whether reliably the fixture 7 after can confirming installation (well) links and installs.
Therefore, in the quick connector loop A of the engineering machinery of present embodiment, the operation signal exported from switch 15 is passed to electromagnetic switching valve 13 via control device 16 by quick connector loop A.Therefore, it is possible to control with the time making hydraulic pump 12 and boost switching electromagnetic switching valve 13.Namely, the operation signal exported according to switch 15 being operated to latched position or unlocked position at control device 16 carries out switching and controls with after making hydraulic pump 12 boost to electromagnetic switching valve 13, carry out switching control with the boosting terminating hydraulic pump 12 to electromagnetic switching valve 13 in the stage after the stipulated time, thereby, it is possible to control pump pressure rising time and timing.
Therefore, operated by the switch 15 operated in these two positions of locked, can be controlled to and only during quick connector hydraulic cylinder 11 action, hydraulic pump 12 be boosted.Thus, compared with quick connector loop in the past, in quick connector loop A of the present invention, the boosting of hydraulic pump 12 was carried out with minimal pressure rising time.Therefore, it is possible to the situation of each operation executing agency 8,9,10 (working rig 4) action astatically suppresses in Min. in being boosted by pump.In addition, owing to reducing unnecessary pump pressure rising time, so improve fuel efficiency.
Above, an embodiment in the quick connector loop of engineering machinery of the present invention is illustrated.But the present invention is not limited to an above-mentioned embodiment, can suitably change in the scope not departing from its purport.Such as, in the present embodiment, be illustrated for hydraulic crawler excavator for engineering machinery 1, but engineering machinery of the present invention also can be the Other Engineering machineries such as shovel loader.
In addition, in the quick connector loop A of present embodiment, in the mode that fixture 7 is fixed when quick connector hydraulic cylinder 11 extends, fixture 7 is disassembled when quick connector hydraulic cylinder 11 shrinks, hydraulic piping is connected respectively with the piston chamber 11a of quick connector hydraulic cylinder 11 and piston rod room 11b.In contrast, as shown in Figure 2, also can with present embodiment on the contrary, in the mode that fixture 7 is disassembled when quick connector hydraulic cylinder 11 extends, fixture 7 is fixed when quick connector hydraulic cylinder 11 shrinks, hydraulic piping is connected respectively with the piston chamber 11a of quick connector hydraulic cylinder 11 and piston rod room 11b.
And, when having said structure, with present embodiment on the contrary, when operator by switching manipulation to unlocked position time, from control device 16 respectively to electromagnetic switching valve 13 and coupling transfer valve 14 output switching signal.Then, electromagnetic switching valve 13 switches, and hydraulic pump 12 boosts.In addition, coupling transfer valve 14 switches according to the switching signal exported from control device 16, and discharge working oil extends to make quick connector hydraulic cylinder 11.Like this, by making quick connector hydraulic cylinder 11 extend, the hold mode being arranged on the fixture 7 of the front end of dipper 6 is removed, and this fixture 7 departs from from the front end of dipper 6.
In addition, undertaken by control device 16 pairs of electromagnetic switching valves 13 switching control after (operator by switching manipulation to unlocked position after), in the stage after the stipulated time of such as about 10 seconds, carry out switching to electromagnetic switching valve 13 and control, the boosting of hydraulic pump 12 terminates.
That is, when operator by switching manipulation to unlocked position, quick connector hydraulic cylinder 11 extend thus fixture 7 departs from from the front end of dipper 6 time, automatically carry out switchings control to electromagnetic switching valve 13 by control device 16, hydraulic recovery is to positive normal pressure during operation.
Therefore, the boosting of hydraulic pump 12 was carried out with minimal pressure rising time.Its result is, when making each operation executing agency 8,9,10 drive, each operation situation of executing agency 8,9,10 action is astatically suppressed in Min..In addition, unnecessary pump pressure rising time can be cut down.
In addition, when new fixture 7 is installed to the front end of dipper 6, also with present embodiment on the contrary, under the state that the front of dipper 6 is configured at assigned position, operator by switching manipulation to latched position.Thus, from control device 16 respectively to electromagnetic switching valve 13 and coupling transfer valve 14 output switching signal, hydraulic pump 12 boosts.In addition, according to the switching signal exported from control device 16, coupling transfer valve 14 switches, and discharge working oil shortens to make quick connector hydraulic cylinder 11.Like this, by making quick connector hydraulic cylinder 11 shorten, connecting pin or the voussoir of new fixture 7 are fastened, and new fixture 7 links with the front end of dipper 6 and keeps (installation).
In addition, when installing above-mentioned fixture 7, also after carried out switching control by control device 16 pairs of electromagnetic switching valves 13, in the stage after the stipulated time of such as about 10 seconds, carry out switching to electromagnetic switching valve 13 and control, the boosting of hydraulic pump 12 terminates.That is, when operator by switching manipulation to latched position, quick connector hydraulic cylinder 11 shorten thus fixture 7 is arranged on the front end of dipper 6 time, automatically carry out switchings control to electromagnetic switching valve 13 by control device 16, hydraulic recovery is to positive normal pressure during operation.
Therefore, if do not exist, switch 15 is operated latched position, the situation that the boosting carrying out hydraulic pump 12 is all the time shortened to make quick connector hydraulic cylinder 11.Its result is, the boosting of hydraulic pump 12 was carried out with minimal pressure rising time.Thus, when the installation of fixture 7, when making each operation fixture 8,9,10 drive, the situation of each operation fixture 8,9,10 action astatically is also suppressed in Min..In addition, unnecessary pump pressure rising time can be cut down.
Industrial applicibility
According to the present invention, can obtain a kind of quick connector loop, it can control the time that electromagnetic switching valve carries out switching hydraulic pump 12 is boosted.
In addition, according to the present invention, in the quick connector loop of engineering machinery, can make be Min. the pressure rising time of hydraulic pump.Therefore, it is possible to pump is boosted Zhong Ge executing agency astatically action situation suppress in Min..In addition, owing to decreasing unnecessary pump pressure rising time, so improve fuel efficiency.
description of reference numerals
Claims (1)
1. a quick connector loop for engineering machinery, for being installed and removed relative to working rig by fixture, is characterized in that, comprising:
Quick connector hydraulic cylinder, it carries out telescopic drive to make fixture be held in or separating operation machine;
Hydraulic pump;
Electromagnetic switching valve, its pressure to hydraulic pump boosting switches;
Coupling transfer valve, it always makes quick connector hydraulic cylinder extension drive for switch operating oil phase for the supplying party of quick connector hydraulic cylinder; And
Control device, it carries out switching respectively to electromagnetic switching valve and coupling transfer valve and controls,
Switch for carrying out handover operation to electromagnetic switching valve and coupling transfer valve is configured to operate two positions, and described two positions are: make quick connector hydraulic cylinder extension to keep latched position during fixture; And unlocked position when making quick connector hydraulic cylinder extension to make fixture depart from,
Control device receives operation signal switching manipulation exported to latched position or unlocked position, carry out switching to coupling transfer valve to control, and with the boosting being started hydraulic pump by the operation of switch and the mode terminating the boosting of hydraulic pump in the stage after the stipulated time carries out switchings control to electromagnetic switching valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-140514 | 2010-06-21 | ||
| JP2010140514A JP5462724B2 (en) | 2010-06-21 | 2010-06-21 | Construction machine quick coupler circuit |
| PCT/JP2011/064117 WO2011162233A1 (en) | 2010-06-21 | 2011-06-21 | Quick coupler circuit for construction equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103119223A CN103119223A (en) | 2013-05-22 |
| CN103119223B true CN103119223B (en) | 2015-07-22 |
Family
ID=45371416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180040039.0A Active CN103119223B (en) | 2010-06-21 | 2011-06-21 | Quick coupler circuit for construction equipment |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20130160441A1 (en) |
| EP (1) | EP2584099B1 (en) |
| JP (1) | JP5462724B2 (en) |
| KR (1) | KR101400509B1 (en) |
| CN (1) | CN103119223B (en) |
| WO (1) | WO2011162233A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113631775A (en) * | 2019-03-27 | 2021-11-09 | 沃尔沃建筑设备公司 | Quick coupler circuit for construction machines with automatic pressurization system |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBO20130357A1 (en) * | 2013-07-10 | 2015-01-11 | Cangini Benne Srl | QUICK ATTACHMENT, AND RELATED CONNECTION EQUIPMENT, OF A TOOL AND A DRIVE ARM |
| WO2015102120A1 (en) * | 2013-12-30 | 2015-07-09 | 볼보 컨스트럭션 이큅먼트 에이비 | Hydraulic control device and construction equipment having same |
| JP6176666B2 (en) * | 2014-04-08 | 2017-08-09 | キャタピラー エス エー アール エル | Control device for quick coupler in work machine |
| KR101793089B1 (en) * | 2016-04-21 | 2017-11-20 | (주)아엠비하이드로릭스 | Valve unit for controlling quick coupler |
| EP3546655B1 (en) * | 2017-02-28 | 2022-07-13 | Komatsu Ltd. | Quick coupler circuit and quick coupler attachment/detachment method |
| JP7402085B2 (en) | 2020-03-16 | 2023-12-20 | 株式会社小松製作所 | Hydraulic system of working machine, control method of working machine and hydraulic system |
| CN112281960A (en) * | 2020-10-13 | 2021-01-29 | 广西柳工机械股份有限公司 | Automatically controlled quick change system and loader |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5147173A (en) * | 1991-06-03 | 1992-09-15 | Caterpillar Inc. | Coupling device |
| JP3056706B2 (en) * | 1997-10-07 | 2000-06-26 | 新キャタピラー三菱株式会社 | Attachment attachment / detachment device for work machines |
| JPH11181819A (en) * | 1997-12-18 | 1999-07-06 | Komatsu Ltd | Hydraulic retaining device for coupler |
| JP4447066B2 (en) * | 1998-03-27 | 2010-04-07 | キャタピラー インコーポレイテッド | Hydraulic control device for work implement installation |
| JP2002266367A (en) | 2001-03-06 | 2002-09-18 | Shin Caterpillar Mitsubishi Ltd | Structure of connecting pin for working machine |
| JP3699385B2 (en) * | 2001-11-01 | 2005-09-28 | 新キャタピラー三菱株式会社 | Quick coupler device for work machines |
| EP1637659A3 (en) * | 2001-12-06 | 2008-08-06 | Geith Patents Limited | A coupler for coupling an accessory to a dipper arm and a control system for such a coupler |
| KR100594850B1 (en) * | 2001-12-18 | 2006-07-03 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | quick-fit system of construction equipment |
| US7367256B2 (en) * | 2003-01-31 | 2008-05-06 | Jrb Attachments, Llc | Pressure switch control for attachment coupling system |
| US7047866B2 (en) * | 2003-01-31 | 2006-05-23 | Jrb Attachments, Llc | Electrical and hydraulic control system for attachment coupling system |
| JP4431124B2 (en) * | 2006-06-09 | 2010-03-10 | 株式会社竹内製作所 | Work machine |
| JP2008266975A (en) * | 2007-04-19 | 2008-11-06 | Caterpillar Japan Ltd | Control unit of working machine |
| JP2009143705A (en) * | 2007-12-17 | 2009-07-02 | Caterpillar Japan Ltd | Hydraulic pressure control circuit for grasping device |
-
2010
- 2010-06-21 JP JP2010140514A patent/JP5462724B2/en active Active
-
2011
- 2011-06-21 WO PCT/JP2011/064117 patent/WO2011162233A1/en active Application Filing
- 2011-06-21 US US13/806,453 patent/US20130160441A1/en not_active Abandoned
- 2011-06-21 KR KR1020137001187A patent/KR101400509B1/en not_active IP Right Cessation
- 2011-06-21 CN CN201180040039.0A patent/CN103119223B/en active Active
- 2011-06-21 EP EP11798117.5A patent/EP2584099B1/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113631775A (en) * | 2019-03-27 | 2021-11-09 | 沃尔沃建筑设备公司 | Quick coupler circuit for construction machines with automatic pressurization system |
| CN113631775B (en) * | 2019-03-27 | 2023-03-14 | 沃尔沃建筑设备公司 | Quick coupler circuit for construction machines with automatic pressurization system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2584099A4 (en) | 2017-11-08 |
| EP2584099A1 (en) | 2013-04-24 |
| WO2011162233A1 (en) | 2011-12-29 |
| KR20130062322A (en) | 2013-06-12 |
| EP2584099B1 (en) | 2020-09-23 |
| JP5462724B2 (en) | 2014-04-02 |
| CN103119223A (en) | 2013-05-22 |
| KR101400509B1 (en) | 2014-05-28 |
| US20130160441A1 (en) | 2013-06-27 |
| JP2012002034A (en) | 2012-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103119223B (en) | Quick coupler circuit for construction equipment | |
| JP5859857B2 (en) | Hydraulic circuit for construction machinery | |
| EP1743980B1 (en) | Hydraulic excavator having a hydraulic control apparatus | |
| CN102066670B (en) | Hydraulic circuit apparatus for hydraulic shovel | |
| CN104870831B (en) | Hydraulic control device and construction machine with same | |
| WO2011078586A3 (en) | System for driving a boom of a hybrid excavator, and method for controlling same | |
| CN101918647A (en) | The hydraulic control system that is used for swiveling construction machine | |
| CN103104004B (en) | Engineering machinery | |
| JP4431124B2 (en) | Work machine | |
| JP2012087541A (en) | Operation speed control device of work machine | |
| JP2002115274A (en) | Attachment controller for hydraulic backhoe | |
| CN205712265U (en) | A kind of band crushing function dig mounting mechanism | |
| JP2011144555A (en) | Construction machine | |
| JP2012002326A (en) | Hydraulic drive device of dismantling working machine | |
| JP2014122654A (en) | Hydraulic circuit of construction machine | |
| JP2011012458A (en) | Hydraulic device for crusher | |
| JPS61294031A (en) | Oil-pressure circuit for excavator | |
| JP2011006838A (en) | Crushing machine | |
| KR101542545B1 (en) | Hydraulic equipment for excavator having tongs installing arm | |
| KR102213444B1 (en) | Link for excavator with fall prevention means of attachment | |
| JP3046870U (en) | Hydraulic cylinder interlock control circuit | |
| CN201778356U (en) | Two-stage pressure switching device of movable arm of excavator | |
| JP2010248858A (en) | Hydraulic device for crusher | |
| CN107663869A (en) | Excavator | |
| KR100868721B1 (en) | An apparatus for operating a knuckle crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |