CN103797191B

CN103797191B - For the equipment of actuating fluid connector pollutant cover cap

Info

Publication number: CN103797191B
Application number: CN201280043530.3A
Authority: CN
Inventors: C·A·M·范霍夫特; D·J·卢扬戴克; H·容格柏勒德
Original assignee: Caterpillar Work Tools BV
Current assignee: Caterpillar Work Tools BV
Priority date: 2011-09-07
Filing date: 2012-09-03
Publication date: 2016-04-06
Anticipated expiration: 2032-09-03
Also published as: WO2013034516A1; CN103797191A

Abstract

The present invention relates to a kind of for activating the equipment (10) of the pollutant cover cap (18) on machine rack (112).Described equipment (10) comprising: be arranged on machine rack (112) and go up and the first conversion cylinder (14) be connected on pollutant cover cap (18), be connected on the first conversion cylinder (14) hydraulic pressure to be passed to the conversing circuits (16) of the first conversion cylinder (14); Be connected on conversing circuits (16) with the conversion sensor (12) controlled the hydraulic pressure transmission to the first conversion cylinder (14).The activation of conversion sensor (12) allows hydraulic pressure transmission to drive the first conversion cylinder (14), is converted to open position to make pollutant cover cap (18) from make position.

Description

For the equipment of actuating fluid connector pollutant cover cap

Technical field

The present invention relates to equipment and the method for controlling power tool to be connected to the coupling member on machine, particularly relating to the method and apparatus of the pollutant cover cap for controlling fluid connector.The invention still further relates to a kind of coupling arrangement for being connected to by power tool on machine.

Background technology

Such as the power tool of cutter, grab bucket or scraper bowl can connect with the master machine of such as excavator, in order to perform as the Job Operations cut, capture or excavate.Power tool can connect with the arm of master machine or stfck mechanism via fixed connection structure or quick release connection structure.

Quick release connection structure can allow relatively easily to change power tool, and operator connects when not leaving driver's cabin or changes power tool whereby.Machine mounting bracket is arranged in when power tool rest on the ground and slips in power tool mounting bracket.After the mounting bracket of power tool is aimed at the mounting bracket of machine, locking device can move in latched position to be locked on machine by power tool.

When power tool is connected on machine, the hydraulic hose of machine and power tool pressure fluid circuit can be connected in order to drive power tool.Known a kind of automatic hydraulic hose connection system, the operator in driver's cabin can activate this automatic hydraulic hose connection system to connect hydraulic hose.This type systematic can depend on the connection of power tool and machine usually.Can hose coupling be provided and be set to and make also automatically to connect power tool being connected to hose coupling in the process on machine.Hose coupling can connect while power tool mounting bracket is connected on machine mounting bracket.

During concrete operations, untapped power tool or machine may be subject to such as moisture and dust or other can drop on the impact of the external factor of the pollutant on the fluid connector of fluid pressure line.Such pollution may damage the fluid connector of power tool or machine during attachment step, or may hinder connecting of machine mounting bracket and power tool mounting bracket.

WO199927194 discloses one for the protection of the Connection Element on building (construction) equipment not by the equipment that dirt, dust and water affect.Described Connection Element can be used to connect for liquids and gases medium or the pipeline for cable.Cladding system can protect Connection Element.Cladding system can comprise the movable housing of tubulose, and this shell is provided with opening, and described cladding system covers by making shell around Connection Element rotation or exposes Connection Element.Shell can be arranged on power tool support or machine rack, and can rotate by activating the bar be connected on shell.

The present invention is intended to the one or more aspects improving or overcome prior art systems at least in part.

Summary of the invention

In first scheme, the invention provides a kind of equipment for being actuated at the pollutant cover cap on machine rack, this equipment comprises: the first conversion cylinder, and it to be arranged on machine rack and to be connected on pollutant cover cap; Conversing circuits, it is connected on the first conversion cylinder for hydraulic pressure is passed to the first conversion cylinder; And conversion sensor, it is connected on conversing circuits in order to control the hydraulic pressure transmission to the first conversion cylinder, wherein, the activation of conversion sensor allows hydraulic pressure transmission to drive the first conversion cylinder, is converted to open position to make pollutant cover cap from make position.

In alternative plan, the invention provides a kind of method for being actuated at the pollutant cover cap on machine rack, the method comprises the following steps: hydraulic pressure is passed to the conversing circuits be connected on the first conversion cylinder, and this first conversion cylinder to be arranged on machine rack and to be connected on pollutant cover cap; Activate the conversion sensor be connected on conversing circuits, wherein, activate conversion sensor and allow hydraulic pressure transmission to drive the first conversion cylinder, be converted to open position to make pollutant cover cap from make position.

When reading the following description to each embodiment by reference to the accompanying drawings, other features and advantages of the present invention will be apparent.

Accompanying drawing explanation

When reading the description hereafter to each embodiment by reference to the accompanying drawings, the aforementioned and further feature that invention will be more fully understood and advantage, wherein:

Fig. 1 is the lateral view being provided with machine according to equipment of the present invention and power tool;

Fig. 2 is the explanatory view of the embodiment of the equipment be attached to according to coupling arrangement of the present invention;

Fig. 3 is according to the sectional view being in the conversion cylinder of withdrawn position of the present invention;

Fig. 4 is according to the sectional view being in the conversion cylinder of retracted position of the present invention;

Fig. 5 is the stereogram of the embodiment according to coupling assembly of the present invention;

Fig. 6 is according to the mounted sectional view being in the coupling assembly of retracted position of the present invention; With

Fig. 7 is according to the mounted sectional view being in the coupling assembly of extended position of the present invention.

Detailed description of the invention

Present invention relates in general to a kind of equipment 10 of the motion for control polluted articles cover cap, described pollutant cover cap to be arranged on machine rack for the protection of at least one fluid connector be arranged on machine rack from pollution.The invention still further relates to a kind of coupling arrangement 110 for being connected to by Machine hydraulic fluid circuit on power tool hydraulic circuit.

Fig. 1 shows the master machine 101 of such as hydraulic crawler excavator, and it can be provided with the hydraulic arm mechanism for actuating arm 102 and power tool 103.In this manual, arm 102 can be interpreted as and comprise hydraulic pressure stfck mechanism or similar means.

Machine 101 can be mobile machine, such as, and excavator, back hoe, excavator, loader, knuckle arm loader, harvester or forestry machine.

Power tool 103 can be connected on machine 101 by arm 102.In the illustrated embodiment, power tool 103 can comprise rotary cutter (rotary knife cutter).In other embodiments, power tool 103 can such as comprise scraper bowl, grapple, weight and mill.

Power tool 103 can comprise the framework of the multiple replaceable and/or interchangeable instrument of carrying.

Power tool 103 can comprise power tool support 114, and machine 101 can comprise machine rack 112.Power tool support 114 and machine rack 112 all can comprise fluid connector.Machine rack 112 can be quick connector.

Machine 101 can be provided with equipment 10 and coupling arrangement 110.Equipment 10 can activate the pollutant cover cap be arranged on machine rack 112.Coupling arrangement 110 can allow fluid between machine rack 112 with power tool support 114 to connect.

Pressure fluid assembly 115 can extend in order to transfer arm 102 and power tool 103 along arm 112.Pressure fluid assembly 115 can comprise multiple hydraulic circuit, comprises machine fluid loop and actuating fluid loop 9.

Power tool 103 can comprise the power tool fluid circuit of the hydraulic control for power tool.Described machine fluid loop can control flow by the fluid of power tool fluid circuit and pressurization.

Machine fluid loop can be arranged for actuating arm 102 and arm member is pivoted relative to each other.Machine fluid loop can be arranged for mobile operating instrument 103.Such as, machine fluid loop can be arranged for and make power tool 103 pivotable and/or rotation, or can be arranged for the moving component of the such as rotatable parts driven in power tool 103.

Actuating fluid loop 9 can be arranged to make can to connect by fluid between machine fluid loop with power tool fluid circuit.

Fig. 2 shows the explanatory view of the embodiment of the equipment 10 for activating pollutant cover cap 18.Equipment 10 can be changed by control polluted articles cover cap 18 between the open and the closed positions.Pollutant cover cap 18 can be arranged on machine rack 112.

Pollutant cover cap 18 can move between the open and the closed positions.In make position, pollutant cover cap 18 can extend being arranged at above the fluid connector in machine rack 112.Pollutant cover cap 18 can protect the not contaminated thing of fluid connector---such as, and dust, dirt or rocklet---impact.At the open position of pollutant cover cap 18, fluid connector can be exposed and this fluid connector may be used for being connected to the corresponding fluid connector that can be arranged in power tool support 114.

Pollutant cover cap 18 can be made up of elastomeric material.Pollutant cover cap 18 can stand distortion.

Equipment 10 can comprise at least one conversion cylinder 14, conversing circuits 16 and conversion sensor 12.

First conversion cylinder 14 can realize the conversion of pollutant cover cap 18 from make position to open position.

First conversion cylinder 14 can be positioned on machine rack 112.First conversion cylinder 14 can be arranged on machine rack 112 by suitable method.First conversion cylinder 14 can be arranged on any suitable position on machine rack 112.

First conversion cylinder 14 can be the hydraulic cylinder comprising cylinder barrel, and wherein piston can be connected on switching piston bar 19.First conversion cylinder 14 can be connected on pollutant cover cap 18.First conversion cylinder 14 can be connected on pollutant cover cap 18 by switching piston bar 19.The motion of switching piston bar 19 can realize the conversion of pollutant cover cap 18 from make position to open position.

The switching piston bar 19 of conversion cylinder 14 can be connected to by suitable mechanical connecting structure on pollutant cover cap 18.Switching piston bar 19 can be connected on the suitable tie point that is positioned on pollutant cover cap 18.In one embodiment, switching piston bar 19 can be connected on the central area of dye thing cover cap 18.

Conversing circuits 16 can comprise the hydraulic fluid conduit be connected on the first conversion cylinder 14.In one embodiment, conversing circuits 16 can comprise the hydraulic fluid conduit of the piston side chamber being connected to the first conversion cylinder 14.

Equipment 10 can comprise at least one biased element 17.In one embodiment, biased element 17 can be connected to an end on machine rack 112 and to be connected on pollutant cover cap 18 in relative end.In one embodiment, biased element 17 can be connected to an end on the first conversion cylinder 14 and to be connected on pollutant cover cap 18 in relative end.

When pollutant cover cap 18 moves to open position from make position, biased element 17 can be compressed.The biased element 17 of compression can drive pollutant cover cap 18 to be transformed into make position from open position.

In one embodiment, biased element 17 can be disc spring (helical spring, wind spring).

In one embodiment, equipment 10 can also comprise the second conversion cylinder 15 be hydraulically connected on conversing circuits 16.Second conversion cylinder 15 can be arranged on machine rack 112.Second conversion cylinder 15 can be the hydraulic cylinder comprising cylinder barrel, and wherein piston can be connected on switching piston bar 19.

Second conversion cylinder 15 can be connected on pollutant cover cap 18.Switching piston bar 19 can be connected on pollutant cover cap 18.The motion of the switching piston bar 19 of the second conversion cylinder 15 can realize the conversion of pollutant cover cap 18 from make position to open position in conjunction with the motion of the switching piston bar 19 of the first conversion cylinder 14.

The switching piston bar 19 of the first and second conversion cylinders 14,15 can be connected to by suitable mechanical connecting structure on pollutant cover cap 18.Switching piston bar 19 can be connected on the suitable tie point that is positioned on pollutant cover cap 18.In one embodiment, switching piston bar 19 can be connected on the opposite side of dye thing cover cap 18.

Equipment 10 can comprise another biased element 17.In one embodiment, this another biased element 17 can be connected to an end on machine rack 112 and to be connected on pollutant cover cap 18 in relative end.In one embodiment, this another biased element 17 can be connected to an end on the second conversion cylinder 15 and to be connected on pollutant cover cap 18 in relative end.

Conversing circuits 16 can comprise the hydraulic fluid conduit be connected on the second conversion cylinder 15.In one embodiment, conversing circuits 16 can comprise the hydraulic fluid conduit of the piston side chamber being connected to the second conversion cylinder 15.

Conversing circuits 16 can enable hydraulic pressure be passed to the first conversion cylinder 14 and/or the second conversion cylinder 15.In one embodiment, the pipeline that hydraulic fluid can flow through conversing circuits 16 from hydraulic fluid source arrives the first conversion cylinder 14, in order to hydraulic pressure to be passed to the first conversion cylinder 14.In one embodiment, the pipeline that hydraulic fluid can flow through conversing circuits 16 from hydraulic fluid source arrives the first and second conversion cylinders 14,15, in order to hydraulic pressure to be passed to the first and second conversion cylinders 14,15.

Conversion sensor 12 could be attached to the transmission of conversing circuits 16 in order to hydraulic control pressure to the first conversion cylinder 14 and/or the second conversion cylinder 15.Activating conversion sensor 12 can allow hydraulic pressure transmission to drive the first conversion cylinder 14 and/or the second conversion cylinder 15, is converted to open position for making pollutant cover cap 18 from make position.Activating conversion sensor 12 can allow hydraulic pressure transmission to drive the first conversion cylinder 14 and/or the second conversion cylinder 15, is converted to open position for making pollutant cover cap 18 from make position.

Conversion sensor 12 can detect the existence of power tool 114.Power tool support 114 moves to machine rack 112 can activate conversion sensor 12.

In one embodiment, the sports bag of conversion sensor 12 is activated containing the alignment motion of machine rack 112 relative to power tool support 114.Complete on time, conversion sensor 12 can be in pressurization joint.

In one embodiment, activate the motion of conversion sensor 12 and can comprise machine rack 112 relative to the aligning of power tool support 114 and rotational motion.When completing aligning and rotate, conversion sensor 12 can be in pressurization joint.

Conversion sensor 12 can comprise machinery or electronic sensor.In one embodiment, conversion sensor 12 can be solenoid or hydro-mechanical unit.

In one embodiment, conversion sensor 12 can comprise hydraulic machinery switch 13, and this hydraulic machinery switch can activate when pressurizeing engage with power tool support 114 during power tool support 114 is aimed at machine rack 112.Power tool support 114 pressurization joins the extraction that hydraulic machinery switch 13 can realize the switching piston bar 19 of the second conversion cylinder 15 and/or the switching piston bar 19 of the first conversion cylinder 14 to, moves to open position for making pollutant cover cap 18 from make position.

During aligning machine rack 112 with power tool support 114 before setting up mechanical connection, during hydraulic machinery switch 13 can be in and engage with the pressurization of power tool support 114.

Usually can not activate conversion sensor 12, and fluid can be stoped to flow through conversing circuits 16 arrive the first conversion cylinder 14 and/or the second conversion cylinder 15.When activating conversion sensor 12, fluid can be allowed to flow through conversing circuits 16 and to arrive the first conversion cylinder 14 and/or the second conversion cylinder 15.Activating conversion sensor 12 can allow hydraulic pressure to be delivered to the first conversion cylinder 14 and/or the second conversion cylinder 15.

Conversion sensor 12 can comprise the valve 30 be arranged in conversing circuits 16.

In one embodiment, machinery or electronic sensor can be connected on valve 30.In one embodiment, hydraulic machinery switch 13 can be connected on valve 30.

In one embodiment, valve 30 can be 3/2 direction valve.

Valve 30 can control the flow of the hydraulic fluid by conversing circuits 16.Valve 30 can be normally closed.When activating conversion sensor 12, valve 30 can be opened to allow hydraulic fluid to flow.

Activate the actuating that conversion sensor 12 can realize valve 30, flow through conversing circuits 16 to allow fluid.Activate the actuating that conversion sensor 12 can realize valve 30, be passed to the first conversion cylinder 14 and/or the second conversion cylinder 15 to allow hydraulic pressure.

In one embodiment, power tool support 114 pressurization is engaged to hydraulic machinery switch 13 and can be combined with the actuating of valve 30.

Hydraulic machinery switch 13 can be connected on flexible member.In one embodiment, flexible member can be torsionspring.Power tool support 114 pressurization is engaged to the compression that hydraulic machinery switch 13 can realize flexible member.When removing pressurization and engaging, flexible member can promote hydraulic machinery switch 13 and arrive initial position.Valve 30 can be back to make position.

Valve 30 can be connected on the fluid circuit of conversing circuits 16.Hydraulic fluid can be transported to the first conversion cylinder 14 by fluid circuit 27.Conversing circuits 16 can comprise other fluid circuit be connected to by pipeline 27 on second conversion cylinder 15.Hydraulic fluid can flow through the piston side chamber that conversing circuits 16 arrives the first conversion cylinder 14 and/or the second conversion cylinder 15, and flows out through conversing circuits 16 from the piston side chamber of the first conversion cylinder 14 and/or the second conversion cylinder 14.

The hydraulic fluid flowed out from valve 30 can be transferred to the first and second conversion cylinders 14,15, makes the synchronous extraction of switching piston bar 19 that pollutant cover cap 18 is moved to open position from make position.The conversion of pollutant cover cap 18 can be realized by two switching piston bars 19 with smooth motion, flow in the piston side chamber of the first and second conversion cylinders 14,15 by making the fluid of equivalent substantially and drive described two switching piston bars.

During two switching piston bars 19 are extracted out, corresponding biased element 17 can be compressed.The resistance acted on two switching piston bars 19 that power needed for compression can be formed than the various components by the first and second conversion cylinders 14,15 is large.Biased element 17 can guarantee the synchronous extraction of the first and second conversion cylinders 14,15.

Valve 30 can be arranged in conversing circuits 16, makes fluid circuit 21 hydraulic fluid can be transported to valve 30 from hydraulic fluid source.Valve 30 can be opened when conversion sensor 12 activates, and flows to fluid circuit 27 to allow hydraulic fluid from fluid circuit 21 through valve 30.

Substitute and be connected with pipeline 21, valve 30 can also be connected on pipeline 28.Pipeline 28 can be connected to actuating fluid loop 9.Fluid circuit 28 can be connected on the discharge loop 176 that is arranged in actuating fluid loop 9.Valve 30 can close when conversion sensor 12 un-activation, make hydraulic fluid can from the first conversion cylinder 14 and/or the second conversion cylinder 15 by the road 27 and valve 30 flow to fluid circuit 28.

Equipment 10 can also comprise the shuttle valve (shuttle valve, reversal valve) 20 be connected on conversing circuits 16.Shuttle valve 20 may be used for fluid circuit 21.Hydraulic fluid can flow out and flow in conversing circuits 16 from shuttle valve 20.

Shuttle valve 20 can be connected in other hydraulic fluid conduit, can pass through this other hydraulic fluid conduit by hydraulic fluid delivery to shuttle valve 20.Shuttle valve 20 can by pressure actuated.The passage with the highest hydraulic pressure in shuttle valve 20 can be opened to allow hydraulic fluid to flow out from the fluid pressure line with higher hydraulic pressure.

In one embodiment, be connected with shuttle valve 20 described in other hydraulic fluid conduit can be bypass circulation 22.Bypass circulation 22 can comprise at least two fluid circuits 34,35.Fluid circuit 34,35 can be connected with shuttle valve 20 respectively.Bypass circulation 22 can be connected on the first fluid pressure line X and the second fluid pressure line Y.Pipeline 34 can be connected on pipeline X, and pipeline 35 can be connected on pipeline Y.First and second fluid pressure line X, Y can also be connected on locking device 134.

When the pressure in pipeline X increases, locking device 134 can move to unlocked position.When the pressure in pipeline Y increases, locking device 134 can move to latched position.

In one embodiment, be connected with shuttle valve 20 described in other hydraulic fluid conduit can be bypass circulation 22 and first and second fluid pressure line X, Y.

Pipeline 21 can be provided with flap valve 32, refluxes from valve 30 in order to prevent hydraulic fluid towards hydraulic fluid source.When flap valve 32 can guarantee that the elevated pressures in the replaced pipeline of shuttle valve 20 activates, pollutant cover cap 18 will stay open.Even if flap valve 32 can guarantee that the pressure hour pollutant cover cap 18 in pressure ratio first conversion cylinder 14 acting on shuttle valve 20 and/or the second conversion cylinder 15 also will stay open.

Equipment 10 can receive the hydraulic pressure from hydraulic power circuits 135.Hydraulic pressure from hydraulic power circuits 135 can be passed to conversing circuits 16, first conversion cylinder 14 and/or the second conversion cylinder 15.

Hydraulic power circuits 135 can be connected in other hydraulic fluid conduit.In one embodiment, hydraulic power circuits 135 can be connected on bypass circulation 22.In one embodiment, hydraulic power circuits 135 can be connected on first and second fluid pressure line X, Y.

With reference to figure 2, equipment 10 can hydraulically be connected to actuating fluid loop 9.First conversion cylinder 14 or the first conversion cylinder 15 can be connected to actuating fluid loop 9.Hydraulic fluid X, pipeline 24, pipeline 26 and pipeline G can flow to the first conversion cylinder 14 or the second conversion cylinder 15 of equipment 10 by the road.Hydraulic fluid can flow out through pipeline H and pipeline 25 from the first conversion cylinder 14 of equipment 10 or the second conversion cylinder 15.

In one embodiment, the first conversion cylinder 14 and the second conversion cylinder 15 can be connected on actuating fluid loop 9.Hydraulic fluid X, pipeline 24 and pipeline 26 can flow to the first conversion cylinder 14 and the second conversion cylinder 15 of equipment 10 by the road.Pipeline 26 can by two independently pipeline G be connected on the first and second conversion cylinders 14,15.Hydraulic fluid can flow to be connected with pipeline 25 two independently pipeline H from the first conversion cylinder 14 of equipment 10 and the second conversion cylinder 15.

In one embodiment, actuating fluid loop 9 can comprise pipeline X, 24,26, G, H and 25.

Equipment 10 can be included in the connection switch 23 in the first conversion cylinder 14 and/or the second conversion cylinder 15.

In one embodiment, connect switch 23 can be arranged in the switching piston bar 19 of the first conversion cylinder 14 and/or the second conversion cylinder 15.Connecting switch 23 can connecting line G and H, flows through actuating fluid loop 9 to enable fluid.When switching piston bar 19 makes pollutant cover cap 18 move to open position, connecting switch 23 can be communicated with H fluid with pipeline G simultaneously.Switching piston bar 19 can be positioned at withdrawn position and be communicated with H fluid with pipeline G to make connection switch 23 simultaneously.In the withdrawn position of switching piston bar 19, fluid can flow to pipeline H from pipeline G.Hydraulic pressure can be transmitted by actuating fluid loop 9 when connecting switch and be communicated with H fluid with pipeline G simultaneously.

Fig. 3 shows the cross section of the first conversion cylinder 14 being in complete withdrawn position.Connect switch 23 and can comprise the piston-bar recess 47 be arranged on switching piston bar 19 and the piston-head recess 48 be arranged on piston head 45.

When leading to piston-bar recess 47 at the opening of pipeline G and H and locate at piston-bar recess 47 adjacent piston-head recess 48, connecting switch 23 can be communicated with H fluid with pipeline G simultaneously.

In one embodiment, connect switch 23 and can comprise the piston-bar recess 47 be arranged on switching piston bar 19.Connect switch 23 to be communicated with H fluid with pipeline G when the opening adjacent piston of pipeline G with H-bar recess 47 is located simultaneously.

When biased element 17 makes pollutant cover cap 18 move to make position, connecting switch 23 can not be communicated with H fluid with pipeline G.Switching piston bar 19 can be retracted, and makes to connect switch 23 and is no longer communicated with H fluid with pipeline G.Pipeline G and H can be converted piston rod 19 and seal.

Fig. 4 shows the cross section of the first cylinder 14 being in retracted position.When piston-bar recess 47 is positioned at the position far away apart from piston-head recess 48, connecting switch 23 can not be communicated with H fluid with pipeline G.

In one embodiment, connect switch 23 to be communicated with H fluid with pipeline G when the opening of pipeline G with H is positioned at the position far away apart from piston-bar recess 47.

In the operation of equipment 10, pollutant cover cap 18 can move to open position from make position, makes the fluid connector be arranged on machine rack 112 can be used for being connected with the fluid connector be arranged on power tool support 114.Pollutant cover cap 18 can remain closed when power tool support 114 does not have fluid connector or scraper bowl is connected on machine rack.

A kind of method of the pollutant cover cap 18 for activating machine rack 112 can comprise the following steps: hydraulic pressure is passed to the conversing circuits 16 be connected with the first conversion cylinder 14, first conversion cylinder 14 to be arranged on machine rack 112 and to be connected with pollutant cover cap 18, activate the conversion sensor 12 connected with conversing circuits 16, wherein, the activation of conversion sensor 12 allows transmission fluid pressure pressure to drive the first conversion cylinder 14, is converted to open position for making pollutant cover cap 18 from make position.

Be connected to before on machine rack 112 at power tool support 114, machine rack 112 can rotate relative to power tool support 114.In this starting stage, the first conversion cylinder 14 and/or the second conversion cylinder 15 can be retracted, and pollutant cover cap 18 can be positioned at make position.

When operation tool holder 114 and machine rack 112 are aimed to connect, power tool support 114 can pressurize with conversion sensor 12 and engage.Pressurization joint can cause conversion sensor 12 to open, and flows through switching flow loop 16 for making hydraulic fluid.Valve 30 can be opened to allow hydraulic fluid to flow through switching flow loop 16 and arrive the first conversion cylinder 14 and/or the second conversion cylinder 15.The switching piston bar 19 of the first conversion cylinder 14 and/or the second conversion cylinder 15 can be pushed to withdrawn position from retracted position by the hydraulic pressure from hydraulic fluid.

Along with switching piston bar 19 is extracted out, pollutant cover cap 18 can move to open position from make position.Along with pollutant cover cap 18 moves to open position, biased element 17 can be compressed.

When pollutant cover cap 18 is in an open position, the first conversion cylinder 14 and/or the second conversion cylinder 15 can be positioned at final withdrawn position, and making to connect switch 23 can be communicated with H fluid with pipeline G simultaneously.Hydraulic fluid can be allowed to flow through actuating fluid loop 9 by being connected to by connection switch 23 on actuating fluid loop 9.

If pollutant cover cap 18 is not opened completely, connecting switch 23 can not be communicated with H fluid with pipeline G, and hydraulic fluid can not be allowed to flow through actuating fluid loop 9.When switching piston bar 9 is in part withdrawn position, connecting switch 23 can not be communicated with H fluid with pipeline G.

Can activate hydraulic power circuits 135 in order to by hydraulic fluid by hydraulic pressure transfer to conversing circuits 16 and actuating fluid loop 9.

In one embodiment, when hydraulic power circuits 135 is connected with other hydraulic fluid conduit be connected on shuttle valve 20, alternatively, hydraulic power circuits 135 can to described other fluid pressure line pressurization.

In one embodiment, alternatively, hydraulic power circuits 135 can pressurize to the pipeline 34 of bypass circulation 22 and pipeline 35.In one embodiment, alternatively, hydraulic power circuits 135 can to first and second fluid pressure line X, Y pressurizations.In another embodiment, hydraulic power circuits 135 to both pipeline X and pipeline 34 pressurization or can pressurize to both pipeline Y and pipeline 35.

During power tool support 114 is aimed at machine rack 112, conversion sensor 12 can allow hydraulic fluid to flow to the first conversion cylinder 14 and/or the second conversion cylinder 15.When to arbitrary hydraulic fluid conduit pressurization, hydraulic fluid can flow.Shuttle valve 20 can guarantee that fluid flows through conversing circuits 16 when pressurizeing to arbitrary hydraulic fluid conduit.

Shuttle valve 20 can be guaranteed reliably to open pollutant cover cap 18 under any operator scheme of equipment 10.In one embodiment, when to one pressurization in the pipeline 34 of bypass circulation 22 and pipeline 35, hydraulic pressure can be transmitted by conversing circuits 16.In one embodiment, when pressurizeing to the one in first and second fluid pressure line X, Y, hydraulic pressure can be transmitted by conversing circuits 16.

Under the operator scheme of equipment 10, machine startup stage power tool support 114 may be needed to connect.When locking device 134 is in latched position, power tool support 114 can be aimed at machine rack 112 but not be connected.In one embodiment, connect motion and comprise machine rack 112 relative to the aligning of power tool support 114 and rotational motion, aim at and can complete when locking device 134 is in latched position.Rotational motion only just can complete when locking device 134 is in the unlocked position.When completing aligning and rotating, conversion sensor 12 can be in pressurization joint.

In one embodiment, both pipeline X and pipeline 34 at first can be pressurized and under being in the pressure lower than maximum machine pressure, and under both pipeline Y and pipeline 35 be in (oil) case pressure.Hydraulic pressure can be passed to shuttle valve 20 by pipeline X and pipeline 34 and enter into conversing circuits 16.When hydraulic pressure is delivered to the first conversion cylinder 14 and/or the second conversion cylinder 15 from conversing circuits 16, pollutant cover cap 18 can be made to move to open position when power tool support 114 pressurizes engage with conversion sensor 12.Locking device 134 can be activated before power tool support 114 and machine rack 112 engage subsequently and arrive unlocked position.Can reduce pressure to both pipeline X and pipeline 34.Pressure in both pipeline X and pipeline 34 can be reduced to tank pressure.Subsequently, both pipeline Y and pipeline 35 can be forced into complete machine pressure.Now can activate shuttle valve 20 to flow out from pipeline Y and pipeline 35 to allow fluid.Flap valve (one way valve) 32 can not allow fluid to flow to conversing circuits 16 from the first conversion cylinder 14 and/or the second conversion cylinder 15.The hydraulic pressure in the first conversion cylinder 14 and/or the second conversion cylinder 15 can be kept, make pollutant cover cap remain in fully open position.

In another operator scheme, power tool 103 may be needed to change.When locking device 134 is in the unlocked position, power tool support 114 can be aimed at machine rack 112 but not be connected.Both pipeline Y and pipeline 35 can be forced into complete machine pressure.Shuttle valve 20 can allow fluid to flow in conversing circuits 16.When operation tool holder 114 and conversion sensor 12 pressurize engage time, hydraulic pressure can be passed to the first conversion cylinder 14 and/or the second conversion cylinder 15, is converted to open position in order to make pollutant cover cap 18 from make position.

When operation tool holder 114 is connected with machine rack 112, locking device 134 can move to latched position.Can reduce pressure to pipeline Y and can pressurize to pipeline X, move to latched position in order to make locking device 134.Meanwhile, can reduce pressure to pipeline 35 and pipeline 34 be pressurizeed.When pressure is switched to pipeline 34 from pipeline 35, flap valve 32 can not allow fluid to flow to conversing circuits 16 from the first conversion cylinder 14 and/or the second conversion cylinder 15.The hydraulic pressure in the first conversion cylinder 14 and/or the second conversion cylinder 15 can be kept, make pollutant cover cap remain in fully open position.

In another operator scheme, power tool support 114 can machine startup stage be connected on machine rack 112.Locking device 134 can be in latched position, but under not being in the pressure from hydraulic power circuits 135.Pollutant cover cap 12 can remain on fully open position.When operation tool holder 114 be in engage with the pressurization of conversion sensor 12 in time, flap valve 32 can not allow fluid to flow to conversing circuits 16 from the first conversion cylinder 14 and/or the second conversion cylinder 15.

In one embodiment, when machine startup, the pressure in pipeline X and pipeline 34 can be increased to 120bar, and hydraulic pressure can be passed to conversing circuits 16.

When removing the connection of power tool support 114 and machine rack 112, during power tool support 114 can not be in and engage with the pressurization of conversion sensor 12.Activated valve 30 can arrive make position, make the fluid from hydraulic power circuits 135 can not flow to the first conversion cylinder 14 and/or the second conversion cylinder 15 by conversing circuits 16.Fluid in first conversion cylinder 14 and/or the second conversion cylinder 15 can in incoming fluid pipeline 28.The biased element 17 be under compressive state can make pollutant cover cap 18 move to make position from open position.When connection removed by power tool support 114 and machine rack 112, biased element 17 can guarantee that pollutant cover cap 18 closes smoothly.

Fig. 2 also show the explanatory view of the embodiment of the coupling arrangement 110 with hydraulic connecting structure, and this hydraulic connecting structure is used for machine rack 112 being connected to power tool support 114 and being used for forming at least one fluid passage between machine fluid loop and power tool fluid circuit.

Coupling arrangement 110 can comprise the machine rack 112 that can be provided with at least one cavity 116.Cavity 116 can run through machine rack 112 and extend, and can have the wide portion 118 of cavity and cavity narrow portion 120.

Cavity narrow portion 120 can be formed as multiple extensions of the wall of cavity 116.In one embodiment, cavity narrow portion 120 can be the monolithic extension of the wall of cavity 116.Shoulder 122 can be formed between the wide portion 118 of cavity and cavity narrow portion 120.

Coupling arrangement 110 can comprise the coupler assembly 124 be arranged on movably in cavity 116.Both cavity 116 and coupler assembly 124 can correspondingly be shaped the relative motion allowing coupler assembly.Coupler assembly 124 can be installed slidably, being at least partly with the slip joint of the wall of cavity 116 of this coupler assembly.Coupler assembly 124 can slide between retracted position and withdrawn position; At retracted position, coupler assembly 124 is retracted in cavity 116 wholly or in part; In withdrawn position, coupler assembly 124 is outstanding in order to engage with the corresponding tprque convertor in power tool support 114 from machine rack 112.Term tprque convertor and fluid connector can exchange use.

Coupling arrangement 110 can comprise the chamber 126 be formed in cavity 116.In one embodiment, chamber 126 can be formed in the wide portion 118 of cavity, and can by the wall in the wide portion 118 of cavity, shoulder 122 and coupler assembly 124 limited boundary.

The size of chamber 126 can be changed relative to the motion of machine rack 112 by coupler assembly 124.The size of chamber 126 can manufacture by the inflow of hydraulic fluid and flow out change, and hydraulic fluid can make coupler assembly 124 move relative to machine rack 112.The change of chamber 126 size can realize corresponding retraction and the extraction of coupling assembly 124.

In one embodiment, machine rack 112 can be provided with a series of cavity 116.Each cavity 116 can have coupler assembly 124 and the chamber 126 of removable installation.In order to machine rack 112 fluid is attached to power tool support 114, power tool support 114 can comprise tprque convertor, and this tprque convertor is connected to the coupler assembly 124 of the correspondence be arranged in machine rack 112.The coupler assembly 124 being in complete extended position or link position can be utilized to connect to realize machine rack 112 with the fluid of power tool support 114.Coupler assembly 124 can be in open position when retracting from complete extended position.

In order to operate and control coupling arrangement 110, can hydraulic connecting structure be suitably set.Machine fluid loop can comprise leads to cavity 116 in order to be connected to the fluid pressure line on corresponding coupler assembly 124.In one embodiment, when setting up fluid and connect between support 112 and 114, fluid pressure line A, B, C, D and the L in machine fluid loop can allow hydraulic fluid flowing to flow out to power tool fluid circuit with from power tool fluid circuit.Hydraulic fluid can be flowed to the tprque convertor of the correspondence in power tool support 114 or flow out from the tprque convertor of this correspondence by the coupler assembly 124 being in link position.

Coupling arrangement 110 can comprise the hydraulic connecting structure of the quick connector mechanism being connected to such as quick connector wedge shape part, and this quick connector mechanism is used for support 112,114 to lock together.

Actuating fluid loop 9 can be controlled in machine-independent fluid circuit ground.Actuating fluid loop 9 can comprise at least one actuator 128.In one embodiment, actuator can be hydraulic cylinder.Actuator 128 can be connected with all coupler assemblies 124 simultaneously.Actuator 128 can pass through suitable leverage---such as, connecting rod---be connected on coupler assembly 124.

Retraction or the elongation of actuator 128 can correspondingly make coupler assembly 124 retract respectively or be stretched to open position or link position.Coupler assembly 124 can as one man be retracted by actuator 128 or be extended.

In one embodiment, a pair actuator 128 can be set, in order to guarantee connect for the fluid between coupler assembly 124 and the tprque convertor of correspondence or remove the uniform balanced load connected.

Can by equipment 10 by connecting the connection of switch 23 and pipeline G and H and disconnecting the operation controlling actuating fluid loop 9.

The operation in actuating fluid loop 9 can also be controlled by support frame switch 130.

Support frame switch 130 can flow for the elongation of coupler assembly 124 by hydraulic control fluid.Support frame switch 130 can suitably be arranged, and when is installed on machine rack 112 in order to detect the power tool support 114 with the tprque convertor of at least one correspondence.In one embodiment, support frame switch 130 can be arranged on machine rack 112 suitably.If power tool support 114 does not carry any corresponding tprque convertor, then can not activate support frame switch 130, and when support frame switch 130 does not allow any hydraulic fluid for making coupler assembly 124 be stretched to link position to flow, fluid connects and can not realize.When not having corresponding tprque convertor in attached power tool support 114, support frame switch 130 can prevent actuation linkages device assembly 124.

The operation in machine fluid loop can also be controlled by switch 132.Switch 132 can flow to locking device 134 in order to separate lock support 112,114 by hydraulic control fluid.Switch 132 can be arranged to only activate when actuator 120 is in complete retracted position.Switch 132 can be arranged in when actuator 128 is in extended position and not activate, and when switch 132 does not allow any hydraulic fluid for activating locking device 134 to flow, the unblock of support 112,114 can not realize.When coupler assembly 124 is not also retracted from link position, switch 132 prevents connecting between machine rack 112 with power tool support 114 from removing too early.

In one embodiment, switch 130,132 can be the sensor be connected on actuating mechanism.In one embodiment, switch 130,132 can be solenoid or hydro-mechanical unit.In one embodiment, switch 130,132 can be the hydraulic machinery switch activated when directly contacting with actuator 128 with power tool support 114.

Coupling arrangement 110 can also comprise the rail return 113 connected together by each chamber 126, and this rail return is represented by thick line in fig. 2.Rail return 113 can comprise the wall scroll fluid pressure line be connected with each chamber 126 by other fluid pressure line.Fluid pressure can be distributed among each chamber 26 by rail return 113 equably.Therefore, the maximum pressure in any one chamber 126 can produce the load needed for corresponding elongation for realizing the coupler assembly 124 in other chamber 126.The chamber 126 with the highest operational pressure can limit the power of giving all coupler assemblies 124.

Diagnosis pipeline 46 can be set in order to testing and analysis rail return 113.

Rail return 113 can be connected on actuator 128.In one embodiment, rail return 113 can be connected to the piston side of the actuator 128 arranged as hydraulic cylinder.

Coupling arrangement 110 can be connected on hydraulic power circuits 135.Hydraulic power circuits 135 can provide hydraulic pressure to unlock in order to be locked onto on power tool support 114 and to them by machine rack 112.The unblock by means of hydraulic power circuits 135 of support 112,114 can be controlled by the hydraulic connecting structure between hydraulic power circuits 135 and switch 132 by switch 132.

Hydraulic power circuits 135 can be connected on actuator 128.In one embodiment, hydraulic power circuits 135 can be connected to the bar side of the actuator 128 arranged as hydraulic cylinder.

Hydraulic power circuits 135 can be arranged to provide pressure fluid to rail return 113.Connection switch 23 and support frame switch 130 can be arranged in the syndeton between hydraulic power circuits 135 and rail return 113.

Fig. 5 shows coupler assembly 124.Coupler assembly 124 can comprise the plunger 136 of hollow.Plunger 136 can have suitable configuration and size, can be slidably mounted in cavity 116.Plunger 136 can have plunger narrow portion 138, come in and go out oral area 139 and the wide portion 140 of plunger.In one embodiment, oral area 139 of coming in and going out can be arranged in the wide portion 140 of plunger and contiguous plunger narrow portion 138.Recessing oral area 139 of coming in and going out can be obtained in the wide portion 140 of plunger.

Plunger narrow portion 138 can be in the slip joint of cavity narrow portion 120.Plunger narrow portion 138 can be arranged to engage hermetically with cavity narrow portion 120, in order to limit the hydraulic flow leakage between plunger narrow portion 138 and cavity narrow portion 120.

The wide portion of plunger 140 can be in the slip joint in the wide portion 118 with cavity.The wide portion of plunger 140 can be arranged to portion 118 wide with cavity and engage hermetically, in order to limit the hydraulic flow leakage between the wide portion of plunger 140 and the wide portion 118 of cavity.

Oral area 139 of coming in and going out can not contact with the wall in the wide portion 118 of cavity.

Tprque convertor 142 can be arranged in plunger 136.Plunger 136 can be provided with the holding structure within the wall for tprque convertor 142 being remained on plunger.Tprque convertor 142 can have the through fluid passage 143 of the longitudinal axis along plunger 136.Fluid passage 143 can be communicated with the cavity of plunger 136.

Tprque convertor 142 can connect with the corresponding tprque convertor being arranged in power tool support 114---and the tprque convertor corresponding at this is provided with fluid passage.The fluid passage of corresponding (separately) forms fluid passage when tprque convertor connects.Hydraulic fluid from machine fluid loop can flow through fluid passage and arrive power tool fluid circuit when fluid connects.Tprque convertor 142 can be formed as male element for being attached to the tprque convertor with corresponding configuration or female element.

Pressure elements 144 can from plunger 136 horizontal expansion.In one embodiment, pressure elements 144 can surround plunger 136 and can be formed as flank or protuberance.In one embodiment, pressure elements 144 can extend from the wide portion of plunger 140 and surround the wide portion of this plunger.When coupler assembly 124 is arranged in cavity 116, pressure elements 144 can extend from the plunger 136 through cavity 116, to be sliding engaged to the wall in the wide portion 118 of cavity.The remainder in chamber 126 and the wide portion 118 of cavity can separate by pressure elements 144.

The wall that pressure elements 144 can be arranged to portion 118 wide with cavity engages hermetically, in order to limit the hydraulic flow leakage between the wall in the wide portion 118 of cavity and pressure elements 144.Pressure elements 144 suitably can be shaped or can be provided with packing ring, in order to slide with the wide portion 118 of cavity and to engage hermetically.

Pressure elements 144 can have pressure surface 145, and in one embodiment, this pressure surface can towards shoulder 122.The size of pressure surface 145 and/or shape can change with the difference of the diameter of corresponding tprque convertor along with the diameter of the diameter of coupler assembly 124, tprque convertor 142, the diameter being arranged in the tprque convertor of the correspondence of power tool support 114 and/or tprque convertor 142.The size of pressure surface 145 and/or shape can depend on the hydrodynamic characteristics of tprque convertor 142 and corresponding tprque convertor.The fluid pressure that hydrodynamic characteristics can depend on the structure of tprque convertor, the type of hydraulic fluid and/or connect for fluid.

Can arrange at least one hole 146 in plunger 136, described hole can allow hydraulic fluid to flow to the cavity of plunger from the outside of plunger 136.The fluid passage 143 of tprque convertor 142 can be communicated with hole 146 by the cavity of plunger 136.Hole 146 can be arranged on comes in and goes out in oral area 139.In one embodiment, oral area 139 of coming in and going out can be provided with multiple hole 146.Hydraulic fluid can be flowed around discrepancy oral area 139 and be flow in cavity by multiple hole 146 under the guiding of the wall formed by the wide portion of plunger 140.

In one embodiment, single hole 146 can be set in the plunger 136 not being formed with oral area 139 of coming in and going out.Hole 146 can between pressure elements 144 and the wide portion 140 of plunger.

The size in hole 146 and number can change with the difference of the diameter of corresponding tprque convertor along with the diameter of the diameter of coupler assembly 124, tprque convertor 142, the diameter being arranged in the tprque convertor of the correspondence of power tool support and/or tprque convertor 142.The size in hole 146 and/or shape can depend on size and/or the shape of pressure surface 145.The size in hole 146 and/or shape can depend on the hydrodynamic characteristics of tprque convertor 142 and corresponding tprque convertor.

Fig. 6 and 7 shows the coupler assembly 124 be slidably mounted in machine rack 112.Coupler assembly 124 in Fig. 6 can be retracted to and disconnect position, and the coupler assembly 124 in Fig. 7 can be drawn to link position.The retraction of the coupler assembly 124 being positioned at cavity 116 inside can be limited by the shoulder 122 that can adjoin with pressure surface 145.

Machine rack 112 can have the machine circuit lines 148 leading to cavity 16, and this machine circuit lines forms the part in machine fluid loop.Fluid from machine fluid loop can flow through machine circuit lines 148 by aperture 149 and arrive cavity 116.In the machine rack 112 with multiple cavity 116, machine fluid loop can be connected to individually by many corresponding each cavitys 116 of circuit lines 148.In one embodiment, fluid pressure line A, B, C, D and L can allow hydraulic fluid to pass through corresponding machine circuit lines 148 and flow to aperture 149 and outflow from aperture 149.

Machine rack 112 can have the rail return pipeline 150 leading to cavity 116, and this rail return pipeline forms a part for track fluid circuit.In one embodiment, rail return pipeline 150 leads to cavity 126.Fluid from track fluid circuit can flow to chamber 126 by rail return pipeline 150.

The chamber 126 being arranged in the wide portion of cavity 118 can by the wall in the wide portion 118 of cavity, shoulder 122, pressure surface 145 and plunger narrow portion 138 limited boundary.The size of chamber 126 can depend on the inflow through rail return pipeline 150 and the outflow of hydraulic fluid.Because chamber 126 can be Fluid Sealing, the fluid pressure in this chamber can be caused to increase so fluid flow in chamber 126.Fluid pressure can act on the surface on the border limiting chamber 126.The fluid pressure acting on the increase on pressure surface 145 can cause the coupler assembly 124 be slidably mounted in machine rack 112 to extract out.Coupler assembly 124 can be drawn to link position by having the continuously flowing into of hydraulic fluid of pressure, connects in order to set up fluid between tprque convertor 142 and the tprque convertor of the correspondence in power tool support 114.

Shunt access 152 axially can extend towards pressure elements 144 from oral area 139 of coming in and going out in plunger 136.Shunt access 152 can be aimed in the axial direction with the longitudinal axis of plunger 136.In one embodiment, shunt access 152 can outside extending pressure element 144.The hydraulic fluid flowing through hole 146 can to flow in the cavity of plunger 136 and to arrive shunt access 152.

The size of shunt access 152 and/or shape can change with the difference of the diameter of corresponding tprque convertor along with the diameter of the diameter of coupler assembly 124, tprque convertor 142, the diameter being arranged in the tprque convertor of the correspondence of power tool support and/or tprque convertor 142.The size of shunt access 152 and/or shape can depend on size and/or the shape in hole 146.

The size of shunt access 152 and/or shape can depend on size and/or the shape of pressure surface 145.The size of shunt access 152 and/or shape can depend on the hydrodynamic characteristics of tprque convertor 142 and corresponding tprque convertor.

Distribution pipeline 154 can extend from shunt access 152.Shunt access 152 is connected to chamber 126 by this distribution pipeline.In one embodiment, distribution pipeline 154 can laterally extend to chamber 126 from split channel 152.In one embodiment, distribution pipeline 154 can be arranged so that pressure surface 145 is between hole 146 and distribution pipeline 154.In one embodiment, shunt access is mounted in the flexible pipe of plunger 136 outside.In one embodiment, the diameter of distribution pipeline 154 can be less than the diameter of shunt access 152, makes fluid pressure enter distribution pipeline 154 along with hydraulic fluid and increase.Hydraulic fluid in ostium 146 can flow in chamber 126 through shunt access 152 and distribution pipeline.

At the concourse of shunt access 152 and distribution pipeline 154, one way valve (flap valve) 156 can be set.One way valve 156 can allow fluid to flow to distribution pipeline 154 from shunt access 152, and anti-fluid flows to shunt access 152 from distribution pipeline 154.In one embodiment, one way valve 156 can be arranged so that pressure surface 145 is between hole 146 and one way valve 156.

With reference to figure 6, coupler assembly 124 is retracted and can be disconnected with corresponding tprque convertor.Coming in and going out oral area 139 can in the wide portion 118 of recessed chamber.Come in and go out oral area 139 can by the wide portion 118 of cavity and with fluid inlet sealed-off.The aperture 149 of machine circuit lines 148 can be sealed by the wide portion 140 of plunger.

In one embodiment, the hole 146 being arranged in the plunger 136 not being formed with oral area 139 of coming in and going out can the wide portion 118 of recessed cavity, and can by the wide portion 118 of cavity with fluid inlet sealed-off.

With reference to figure 7, coupler assembly 124 extends and can be connected on corresponding tprque convertor.Oral area 139 of coming in and going out can be positioned to be communicated with aperture 149 fluid of machine circuit lines 148.Fluid can flow through aperture 149 from machine circuit lines 148 and flow to oral area 139 of coming in and going out.Hydraulic fluid can be flowed around discrepancy oral area 139 and be entered in the cavity of plunger 136 by multiple hole 146.

In one embodiment, when oral area 139 of coming in and going out is communicated with machine circuit lines 148 fluid, coupler assembly 124 can be in complete extended position.In one embodiment, oral area 139 of coming in and going out can have the size corresponding with aperture 149 and/or shape.

In one embodiment, plunger 136 is not formed with oral area 139 of coming in and going out, and hole 146 can be positioned in when coupler assembly 124 extends and be communicated with aperture 149 fluid of machine circuit lines 148.Fluid can flow through aperture 149 from machine circuit lines 148 and flow in hole 146.Hydraulic fluid can passing hole 146 flow in the cavity of plunger 136.

In one embodiment, hole 146 can have the size corresponding with aperture 149 and/or shape.In one embodiment, when hole 146 is communicated with machine circuit lines 148 fluid, coupler assembly 124 can be in complete extended position.

A kind of coupling arrangement 110 for power tool 103 fluid being attached to machine 101 comprises: at least one coupler assembly 124 be slidably installed in order to connect machine fluid circuit and power tool loop at link position, be arranged to the actuating fluid loop 9 at least one coupler assembly 124 being actuated into link position from open position, for detecting the sensor 130 of the existence of power tool 103, and, for activating the equipment 10 of the pollutant cover cap 18 be positioned on machine rack 112, equipment 10 comprises and is arranged on machine rack 112 and is connected to the first conversion cylinder 14 of pollutant cover cap 18, be connected to the first conversion cylinder 14 for hydraulic pressure is passed to the first conversion cylinder 14 conversing circuits 16 and be attached to conversing circuits 16 be used for controlling to the first conversion cylinder 14 hydraulic pressure transmit conversion sensor 12, wherein, activating conversion sensor 12 allows transmission fluid pressure pressure to drive the first conversion cylinder 14, open position is transformed into from make position for making pollutant cover cap 18.

In one embodiment, the equipment 10 be included in coupling arrangement 110 can also comprise the second conversion cylinder 15.Second conversion cylinder 15 can be positioned on machine rack 112.Second conversion cylinder 15 can be connected on pollutant cover cap 18.Switching piston bar 19 can be connected on pollutant cover cap 18.The motion of the switching piston bar 19 of the second conversion cylinder 15 can realize the conversion of pollutant cover cap 18 from open position to make position in conjunction with the motion of the switching piston bar 19 of the first conversion cylinder 14.

With reference to figure 2, machine rack 112 can be attached to power tool support 114 and start by the operation of coupling arrangement 110.To activate locking device 134, machine rack 112 can be locked onto on power tool support 114 in actuated hydraulic power loop 135.Locking device 134 can be activated in order to lock bracket 112,114 by the fluid pressure increasing X by the road.In one embodiment, the fluid pressure of increase can act on the bar side of locking device 134.

Lock bracket 112,114 time, the pressure in fluid pressure line can increase further.Pressure regulator 158 can be connected on pipeline X.Just can open when the preset value of the lock pressure specific pressure adjuster 158 of pressure regulator 158 only in locking device 134 is large.In one embodiment, described preset value is selected in the scope of 60bar to 90bar.In one embodiment, described preset value is 53bar.Before support 112,114 is mechanically locked, can prevent hydraulic fluid from flowing to support frame switch 130 and rail return 113.

Hydraulic fluid can be opened to flow to support frame switch 130 when allowing fluid to flow at pressure regulator 158.If the power tool support 114 carrying corresponding tprque convertor is connected on machine rack 112, then can activate support frame switch 130.Activate the actuating that support frame switch 130 can realize valve 160, flow to equipment 10 to allow fluid.Valve 160 can be arranged between pipeline 24 and pipeline 26.

Fluid can flow through pipeline G and arrive the first conversion cylinder 14.In one embodiment, fluid can flow through pipeline G and arrive the first and second conversion cylinders 14,15.When connect switch 23 can connecting line G and H time, fluid can be allowed to flow to pipeline H.

When selector bar 9 makes pollutant cover cap 18 move to open position, connecting switch 23 can be communicated with H fluid with pipeline G simultaneously.Selector bar 9 can be in withdrawn position to be communicated with H fluid with pipeline G while of connecting switch 23.

Fluid in pipeline H can flow to one way valve 162.

One way valve 162 can allow fluid to flow in rail return 113 and arrive chamber 126 through rail return pipeline 150.The fluid flow increased in chamber 126 causes the fluid pressure in this chamber to increase.Fluid pressure can act on the pressure surface 145 of coupler assembly 124, realize the elongation of this coupler assembly from open position to extended position, the fluid set up between tprque convertor 142 and the corresponding tprque convertor in power tool support 114 at this extended position connects.Due to the effect stoping fluid to flow to the one way valve 156 of shunt access 152 from distribution pipeline 154, the pressure raising (accumulation) in chamber 126 can not enter the cavity of plunger 136.

In one embodiment, one way valve 162 fluid can be allowed to flow through piston side that rail return 113 arrives actuator 128.The increase entering the fluid flow in 128 piston side chambers of actuator can cause the fluid pressure in this chamber to increase, in order to realize the elongation of actuator 128.Actuator 128 can be connected on coupler assembly 124, can realize the corresponding elongation of coupler assembly 124.Making coupler assembly 124 extend by making actuator 128 extend can be optional, or can be the mode except being acted on by pressure fluid on pressure surface 145 except realization elongation.

The extraction that the pressure by the rising in chamber 126 of coupler assembly 124 and/or the elongation of actuator 128 realize can make pipeline A, B, C, D and L be connected to the cavity of plunger 136, in order to allowing fluid from machine fluid loop flow to the cavity of plunger 136 by the pipeline 148 of corresponding (separately) and aperture 149.If do not activate machine fluid circuit, then the fluid in the cavity of plunger 136 can keep having atmospheric pressure or tank pressure.When activating machine fluid circuit, the pressure in the cavity of pipeline 148 and plunger 136 can be increased.

When between tprque convertor 142 and corresponding tprque convertor, fluid connects, oral area 139 of coming in and going out can be communicated with aperture 149 fluid, and this permission fluid flows through machine circuit lines 148 and enters in the cavity of plunger 136.Then fluid can arrive by the fluid passage 143 in tprque convertor 142 the corresponding passage being arranged in corresponding tprque convertor.

In one embodiment, when between tprque convertor 142 and corresponding tprque convertor, fluid connects, the hole 146 of each plunger can be communicated with aperture 149 fluid, and this permission fluid flows through machine circuit lines 148 and enters in the cavity of plunger 136.Then fluid can arrive by the fluid passage 143 in tprque convertor 142 the corresponding passage being arranged in corresponding tprque convertor.

Between tprque convertor 142 and corresponding tprque convertor fluid connect and pressure fluid flows through corresponding fluid passage time, the separating force acted on tprque convertor can be produced.Separating force can be offset by the fluid pressure acted on pressure surface 145 and/or actuator 128.In one embodiment, the pressure in chamber 126 can be enough to produce the power acted on pressure surface 145, connects in order to keep the fluid between tprque convertor.In one embodiment, can the fluid between tprque convertor be kept to connect by the pressure acted on pressure surface 145 in the pressure in actuator 128 and chamber 126.

The separating force produced can depend on the pressure of the fluid in machine loop.In one embodiment, the increase of machine fluid circuit pressure can form higher separating force between tprque convertor.The difference of the ratio that pressure surface 145 can be arranged so that between tprque convertor surface and pressure surface 145 is greater than 1, is greater than described separating force to make the power acted on pressure surface 145.

Chamber 126 can be connected on machine fluid loop by the one way valve 156 be arranged in plunger 136.If the pressure in the pressure ratio chamber 126 in machine fluid loop is large, then the fluid in the cavity of plunger 136 can have higher force value and can flow to the lower chamber 126 of the force value of fluid pressure.Cavity from plunger 136 flows out and flow in chamber 126 through shunt access 152, one way valve 156 and distribution pipeline 154 by the fluid with elevated pressures.Fluid can continue to flow until pressure in chamber 126 and plunger 136 cavity in pressure equalizing.

When the pressure in chamber 126 produces the power acted on pressure surface 145, the power acted on pressure surface 145 can produce with by the fluid flowed out from the cavity of plunger 136 through fluid passage and the separating force acted on tprque convertor is equal.Pressure in chamber 126 locks coupler assembly 124 with balanced may be used for of the pressure in the cavity of plunger 136.When all chambers 126 are all coupled together by rail return 113, the elevated pressures load in a chamber 126 can be dispensed to other chamber 126, even if the pressure in the cavity of corresponding plunger 136 may have lower force value.

Because fluid can not flow to the cavity of plunger, so the pressure in chamber 126 can remain unchanged to during the force value less than the force value in chamber 126 by the Pressure Drop in machine fluid loop due to the reason of flap valve 156 from chamber 126.The pressure stage irrelevant with the pressure in fluid pressure line A, B, C, D and the L in machine loop can be obtained in chamber 126.Because all chambers 126 are all coupled together by rail return 113, even if so machine circuit pressure is lower or lack the pressure load that also can provide balance to all coupler assemblies 124.

In one embodiment, can flow into stop the fluid with Latent destruction fluid pressure by hydraulic control operation one way valve 162, thus avoid the component to may not being designed to bear high pressure to damage.One way valve 162 can stop the high pressure in rail return 113 to arrive locking device 134.

In one embodiment, rail return 113 can be connected to machine fluid loop by reducing valve 164.Reducing valve 164 can be adjustable pilot operated valve, and it is installed for eliminating that produce in machine fluid loop, can be passed to chamber 126 by one way valve 156 and rail return 113 excessive pressure peak.The pressure set points of reducing valve 164 can be significantly higher than maximum pressure allowed in chamber 126 and rail return 113, in order to avoid undesirable loss of the power kept required for fluid connection.In one embodiment, the pressure set points selected in the scope that reducing valve 164 can have from 390bar to 420bar.In one embodiment, described pressure set points is 420bar.

When machine rack 112 and power tool support 114 are directed to coupled position, locking device 134 can be activated in order to mechanically locking component.

In this stage, support frame switch 130 can not be activated and connect switch 23, not allowing fluid to flow.Pollutant cover cap 18 can be in the close position.

When activating locking device 134, pipeline X can pressurize until 120bar maximum value, and the cylinder of locking device 134 can start to retract.

When the pressure in pipeline X reaches 53bar, pressure regulator 158 can be opened to allow fluid to flow to support frame switch 130 by pipeline 2.Support frame switch 130 can be opened when activating.Pipeline G can be pressurised into about 70bar.Can activate and connect switch 23 with connecting line G and H, in order to allow fluid to flow to rail return 113, make the fluid connector in machine rack 112 and power tool support 114 can start to engage.

If support frame switch 130 or any one connection in switch 23 fail to activate, do not allow fluid to flow, then can stop carrying out ensuing fluid connector joint.

Power tool 103 is connected to the method on machine 101, and the method comprises: provide at least one coupler assembly 124 being slidably installed to connect machine fluid circuit and power tool fluid circuit; Actuating fluid loop 9 is set and arrives link position to activate at least one coupler assembly 124 from open position; Sensor 130 is set to detect the existence of power tool 103; The activated sensors 130 when power tool 103 is installed on machine rack 112; Hydraulic pressure is passed to conversing circuits 16, first conversion cylinder 14 be connected on the first conversion cylinder 14 to be arranged on machine rack 112 and to be connected on pollutant cover cap 18; And activate the first conversion sensor 12 be connected on conversing circuits 16, wherein, the activation of conversion sensor 12 allows hydraulic pressure transmission to drive the first conversion cylinder 14, is converted to open position for making pollutant cover cap from make position.

With reference to figure 2, can being started by the pressure in rail return 113 discharge chamber 126 and rail return pipeline 150 for the operation making machine rack 112 and power tool support 114 remove to connect of coupling arrangement 110.

In one embodiment, discharge loop 176 for rail return 113 can be set by the discharge cock 166 often opened and main discharge one-way valve 168,170.Discharge cock 166 only just can be closed when chamber 126 and rail return pipeline 150 pressurize, in order to stop discharge function.Discharge cock 166 and main discharge one-way valve 168,170 can be arranged on leads to the hydraulic return line in machine fluid loop from rail return 113.

Discharge loop 176 for rail return 113 can comprise: the reflux fluid pipeline 178 rail return 113 being connected to machine fluid loop; Be arranged on the discharge cock 166 on reflux fluid pipeline 178; And, be arranged on and reflux fluid pipeline 178 be positioned at discharge cock 166 upstream in case at least one one way valve 168,170 of flowing towards discharge cock 166 of backflow fluid.In one embodiment, discharge loop 176 and can comprise branch return fluid circuit 180.Rail return 113 can be connected to two fluid circuits A, the D in machine fluid loop by reflux fluid pipeline 178 and branch return fluid circuit 180.One way valve 168,170 can lay respectively on reflux fluid pipeline 178 and branch return fluid circuit 180.Main discharge one-way valve 168,170 can be connected on reflux fluid pipeline, makes the one way valve 168,170 when in pipeline is reduced pressure that reflux fluid can be allowed to flow back in (oil) case.Reflux fluid can be flowed by pipeline decompression.When discharge cock is opened, reflux fluid can always flow in the pipeline reduced pressure.

In one embodiment, main discharge one-way valve 168,170 can be connected on pipeline A and D, and arbitrary wherein in these pipelines can reduce pressure to allow reflux fluid to flow back to fuel tank.Reflux fluid can be included in the piston side of actuator 128 and the Fluid Volume in chamber 126.

Disconnect for making power tool 103 and machine 101 coupling arrangement 110 connected can comprise: be slidably mounted on the multiple coupler assemblies 124 in multiple cavity 116, coupler assembly 124 separation chamber 116 is to form chamber 126; Connect the rail return 113 of chamber 126; And discharge loop 176.

A kind of rail return 113 pressure that reduces disconnects to make power tool 103 and machine 101 method connected, the method can comprise the following steps: reduce chamber 126 and chamber 126 be connected to the pressure in the rail return pipeline 150 of rail return 113, in order to open the discharge cock 166 be positioned on reflux fluid pipeline 178; Be connected to the pressure in machine fluid circuit lines A, the D on reflux fluid pipeline 178 with reduction, flow out from rail return 113 to enable reflux fluid and arrive machine fluid loop.

In one embodiment, other the main discharge one-way valve being connected to other fluid pressure line can be set.

Pipeline Y can be pressurizeed by the pressure in hydraulic power circuits 135 discharge conduit X simultaneously.Fluid from pipeline Y can flow to the bar side of actuator 128.The pressure increasing bar side and the pressure reducing piston side can realize the retraction of actuator.When actuator 128 is connected on coupler assembly 124, coupler assembly 124 correspondingly can be retracted and disconnect fluid and be connected.The retraction completely of actuator 128 can correspondingly make coupler assembly 124 be retracted into completely in machine rack 112.

Additional discharge loop can be made up of one way valve 162 and additional discharge one way valve 172.Valve 162 and 172 only just can allow fluid to be flow back in fuel tank by pipeline X when pipeline Y pressurizes.Reflux fluid can comprise the Fluid Volume of piston side and the chamber 126 being arranged in actuator 128.

Switch 132 can detect the position of actuator 128.Switch 132 can be normally closed and fluid can be stoped to flow out Y by the road from hydraulic power circuits 135 flow to locking device 134.When actuator 128 is retracted completely, the actuating that switch 132 can realize valve 173 flow to the piston side of locking device 134 to allow fluid from hydraulic power circuits 135, in order to separate lock support 112,114.This is for preventing the safety measure of undesirable operation of locking device 134 when coupler assembly 124 is not fully retracted in machine rack 112.

Reducing valve 174 can be arranged in the fluid pressure line of bar side of connecting line Y and actuator 128, to prevent any undesirable deviation (drift) of the actuator being in open position.Reducing valve 174 can be hydraulic control action.If chamber 126 and pipeline 150 are not forced into the pressure stage of pressure regulator 158, then can retain the fluid of the bar side of actuator 128.

It will be understood by those skilled in the art that and can change previous embodiment to obtain equipment of the present invention.

Industrial usability

The invention describes a kind of equipment 10 and a kind of coupling arrangement for Machine hydraulic fluid circuit being attached to power tool hydraulic fluid circuit.

In machine 101, power tool 103 can be used for processing weight.Power tool 103 can be overthrown, hole, excavate, plough plough, cut, capture and/or delivery can comprise the weight of sand, stone, metal etc.Power tool 103 can connect with the machine 101 of particularly portable master machine and supply power by this machine.Machine 101 can be provided with the hydraulic pressure transfer equipment for the such as arm 102 and/or dipper driving power tool 103.Power tool operation can be controlled via guidance panel by the operator in machine 101 driver's cabin.

Equipment 10 can move by control polluted articles cover cap 18 between the opened and the closed positions.Pollutant cover cap 18 can cover pollutant for the tprque convertor be arranged in machine rack 112.But, when the power tool 103 can with fluid connector is attached to machine 101, need to make pollutant cover cap 18 move to open position from make position.Equipment 10 can make pollutant cover cap 18 move to open position from make position, is connected with the fluid connector in power tool support 114 to enable being arranged on machine rack 112.

Equipment 10 can make pollutant cover cap 18 move by power tool support 114 and the joint of conversion sensor 12.

Equipment 10 can comprise and connect switch 23, and this connection switch is a part for the connection control of coupling arrangement 110 for machine 101 being attached to power tool 103.Only have when pollutant cover cap 18 is positioned at open position, equipment 10 just can allow fluid to flow to actuating fluid loop 9.This inspection is verified and was carried out before any fluid is directed to rail return 113.Connect switch 23 can be arranged in the first conversion cylinder 14 and/or the second conversion cylinder 15.If do not have fluid to flow through connect switch 23, then the Connection Step that can stop operation between tool holder 114 and machine rack 112.

First hydraulic fluid can flow through support frame switch 130 and connect switch 23 in order to engaging fluid connector before arrival common rail 113.

Coupling arrangement 110 can have at least one plunger 136 being provided with the hollow of one way valve 156.Machine fluid loop can be connected to track fluid circuit by shunt access 152 and distribution pipeline 154 by the plunger 136 of hollow.Fluid pressure in machine fluid loop may be used for keeping the fluid of tprque convertor to connect.Flap valve 156 can flow to machine fluid loop from track fluid circuit and limits by convection cell.

In the operation of coupling arrangement 110, the pressure in chamber 126 can be provided by track fluid circuit or be provided by machine fluid loop during operating at power tool during attended operation.One way valve 156 and 162 can allow the pressure in chamber 126 to raise (accumulation).Main pressure value in chamber 126 can be the higher person in machine fluid circuit pressure value or track fluid circuit force value.Even if the pressure in chamber 126 also can keep when pressure source is no longer available.The damage that reducing valve 164 can protect chamber 126, rail return pipeline 150 and rail return 113 to avoid because excessive pressure causes.

Coupling arrangement 110 can have at least one and be provided with oral area 139 of coming in and going out, has the plunger 136 of the hollow in multiple holes 146 or a hole 146.When coupler assembly 124 be retracted to disconnect position time, chamber 126 can with the fluid pressure line sealed-off in machine fluid loop.When disconnecting, due to the pressure raised in the fluid pressure line in machine fluid loop when fluid connects and not yet sets up, can not accidental activation coupler assembly 124.

Coupling arrangement 110 can have the balanced loaded track fluid circuit guaranteed on coupler assembly 124.All chambers 126 can be coupled together by track fluid circuit, to allow the load between the maximum pressure generation maintenance tprque convertor in arbitrary fluid pressure line in machine fluid loop or track fluid circuit needed for fluid connection.

Coupling arrangement 110 can have to detect the support frame switch 130 whether power tool support 114 carries corresponding tprque convertor.When not detecting that power tool support 114 carries corresponding tprque convertor, support frame switch 130 can not allow the pressurized with fluid of track fluid circuit.Can there is invalid connection in avoiding device in support frame switch 130, fluid is connected to while machine rack connects with power tool rack mechanical and sets up.

Coupling arrangement 110 can have the switch 132 of whether retracting completely for detecting actuator 128.Whether the activation of switch 132 determines can activate locking device 134, with when convection cell coupling and/or coupler assembly 124 can not causing when the risk of potential damage and separate lock support 112,114.

When can actuation switch 132 to open position time, locking device 134 can move to unlocked position.When therefore locking device 134 is positioned at unlocked position, machine rack 112 and power tool support 114 can be disengaged.Pipeline X can reduce pressure, and pipeline Y can pressurize.When acting on the higher hydraulic pressure on shuttle valve and switching between pipeline, shuttle valve 20 can be activated.When operation tool holder 114 is disengaged, the engagement pressure on conversion sensor 12 is removed, and then causes valve 30 to close.When conversion sensor 12 is in the close position, the hydraulic pressure in conversing circuits 16 can not by the pressure influence from hydraulic power circuits 135.When biased element 17 makes pollutant cover cap 18 move to make position from open position, the fluid in conversing circuits 16 can in feed line 28.

According to discussion above, will readily appreciate that the industrial usability of equipment 10 described herein and coupling arrangement 110.

Therefore, the present invention includes all modification and the equivalent of the theme limited in the appended claims that applicable law allows.In addition, unless otherwise indicated herein, the present invention contains any combination of the element (factor) in above-mentioned likely modification.

This application claims the priority of european patent application No.11180408.4, its disclosure is combined in herein by reference.

Although the technical characteristic mentioned in claim is followed by Reference numeral; but comprise Reference numeral only for the sole purpose of the intelligibility of raising claims; therefore, be with or without Reference numeral and all can not produce restriction to the scope of above-mentioned technical characteristic or any claimed element (factor).

Those skilled in the art are readily appreciated that, do not depart from the scope of the present invention or spirit prerequisite under, the present invention can have other concrete form.Therefore, only above-described embodiment should be interpreted as it is unrestricted to exemplary illustration of the present invention.Therefore, scope of the present invention by appended claims but not above description limited, and the modification therefore in all spirit and scope falling into the equivalent of claims is included in claims of the present invention.

Claims

1. one kind is positioned at the equipment (10) of the pollutant cover cap (18) on machine rack (112) for actuating, and described equipment (10) comprising:

First conversion cylinder (14), described first conversion cylinder is arranged on described machine rack (112) and goes up and be connected on described pollutant cover cap (18);

Conversing circuits (16), described conversing circuits is connected on described first conversion cylinder (14) hydraulic pressure to be passed to described first conversion cylinder (14); With

Conversion sensor (12), described conversion sensor is attached to described conversing circuits (16) to control the hydraulic pressure transmission to described first conversion cylinder (14),

Wherein, the activation of described conversion sensor (12) allows hydraulic pressure transmission to drive described first conversion cylinder (14), in order to make described pollutant cover cap (18) be converted to open position from make position,

Wherein, described equipment (10) also comprises the shuttle valve (20) be connected between described conversing circuits (16) and many fluid pressure lines.

2. equipment according to claim 1 (10), it is characterized in that, described equipment also comprises the second conversion cylinder (15) be arranged on described machine rack (112), and described second conversion cylinder (15) is connected to described pollutant cover cap (18) and goes up and be hydraulically connected on described conversion sensor (12).

3. equipment according to claim 1 (10), is characterized in that, described many fluid pressure lines comprise bypass circulation (22).

4. equipment according to claim 3 (10), it is characterized in that, described bypass circulation (22) is connected to the first and second fluid pressure line (X, Y) on, described first and second fluid pressure lines (X, Y) are also connected on locking device (134).

5. equipment according to claim 1 (10), is characterized in that, described many fluid pressure lines comprise the first fluid pressure line (X) and the second fluid pressure line (Y).

6. equipment according to claim 1 and 2 (10), is characterized in that, described many fluid pressure lines are connected with hydraulic power circuits (135) in order to provide hydraulic pressure to described first conversion cylinder (14).

7. equipment according to claim 1 and 2 (10), it is characterized in that, described equipment also comprises and being arranged in described first conversion cylinder (14) for by the connection switch (23) of actuating fluid loop (9) transmission fluid pressure pressure.

8. equipment according to claim 1 and 2 (10), it is characterized in that, described conversion sensor (12) comprises mechanical switch (13), and this mechanical switch is connected on the valve (30) that is arranged in described conversing circuits (16).

9., for being actuated at a method for the pollutant cover cap (18) on machine rack (112), said method comprising the steps of:

Hydraulic pressure is passed to the conversing circuits (16) be connected on the first conversion cylinder (14), described first conversion cylinder (14) is arranged on described machine rack (112) and goes up and be connected on described pollutant cover cap (18); And

Activation is connected in the conversion sensor (12) on described conversing circuits (16),

Wherein, the activation of described conversion sensor (12) allows hydraulic pressure transmission to drive described first conversion cylinder (14), to make described pollutant cover cap (18) be converted to open position from make position,

Wherein, described conversing circuits (16) be connected shuttle valve (20) between many fluid pressure lines.

10. method according to claim 9, it is characterized in that, described many fluid pressure lines are connected in order to provide hydraulic pressure to described first conversion cylinder (14) and described many fluid pressure lines comprise the first fluid pressure line (X) and the second fluid pressure line (Y) with hydraulic power circuits (135), described method also comprises the step of pressurizeing to described hydraulic power circuits (135), and this step comprises alternatively to the first fluid pressure line (X) and the second fluid pressure line (Y) pressurization.

11. methods according to claim 10, it is characterized in that, described method also comprises such step, namely, activate described shuttle valve (20), to select the fluid pressure line (X, Y) in described many fluid pressure lines with higher hydraulic pressure for hydraulic pressure being passed to described conversion sensor (12).

12. methods according to any one of claim 9,10,11, it is characterized in that, described method is also comprised and to be connected to by the connection switch (23) be arranged in described first conversion cylinder (14) on actuating fluid loop (9) to be transmitted the step of hydraulic pressure by this actuating fluid loop (9).

13. 1 kinds for power tool (103) fluid being attached to the coupling arrangement (110) of machine (101), described coupling arrangement (110) comprising:

At least one coupler assembly (124), described coupler assembly is installed slidably and is connected machine fluid circuit and power tool fluid circuit at link position;

Actuating fluid loop (9), described actuating fluid loop is arranged to activate described at least one coupler assembly (124) from open position to link position;

For detecting the sensor (130) of the existence of described power tool (103); With

For activating the equipment (10) of the pollutant cover cap (18) be positioned on machine rack (112), described equipment (10) comprising:

Conversing circuits (16), described conversing circuits is connected on described first conversion cylinder (14) to make hydraulic pressure be passed to described first conversion cylinder (14); With

Conversion sensor (12), described conversion sensor (12) is attached to described conversing circuits (16) to control the hydraulic pressure transmission to described first conversion cylinder (14),

Wherein, the activation of described conversion sensor (12) allows hydraulic pressure transfer to drive described first conversion cylinder (14), in order to make described pollutant cover cap (18) be converted to open position from make position,

14. 1 kinds for power tool (103) being attached to the method for machine (101), described method comprises:

There is provided at least one coupler assembly (124), described coupler assembly is installed for connection machine fluid circuit and power tool fluid circuit slidably;

Actuating fluid loop (9) are arranged to activate described at least one coupler assembly (124) from open position to link position;

Sensor (130) is arranged to the existence detecting described power tool (103);

Described sensor (130) is activated when described power tool (103) is installed on machine rack (112);

Hydraulic pressure is passed to the conversing circuits (16) be connected on the first conversion cylinder (14), described first conversion cylinder (14) is arranged on described machine rack (112) and goes up and be connected on pollutant cover cap (18); And

Activation is connected to the conversion sensor (12) on described conversing circuits (16),