CN102224303A - Coupler with coupling status sensors - Google Patents
Coupler with coupling status sensors Download PDFInfo
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- CN102224303A CN102224303A CN2009801442374A CN200980144237A CN102224303A CN 102224303 A CN102224303 A CN 102224303A CN 2009801442374 A CN2009801442374 A CN 2009801442374A CN 200980144237 A CN200980144237 A CN 200980144237A CN 102224303 A CN102224303 A CN 102224303A
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Classifications
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- 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
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- 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
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- 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
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- 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
- E02F9/26—Indicating devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/20—Joints and connections with indicator or inspection means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Operation Control Of Excavators (AREA)
Abstract
A coupler (24) for coupling an accessory (28) to an excavator arm (12) of an excavator (10), the coupler comprising a first jaw (30) that points in a generally longitudinal direction relative to the frame of the coupler (24), the jaw (30) being for receiving a first attachment pin of an accessory (28) and having a first sensor (40) for detecting the presence of an attachment pin therein, the coupler (24) further having a second jaw (32), or a latch (34), longitudinally spaced from the first jaw (30), and being for receiving a second attachment pin of the accessory (28), and having a second sensor (42) for detecting the presence of an attachment pin therein. The sensors (40, 42) transmit or send signals to a receiver (46, 48) for notifying the driver of the coupling status of the coupler (24) with respect to the accessory (28).
Description
Technical field
The present invention relates to be used for annex (for example scraper bowl) is connected to removedly the digger arm of excavator, for example from the driver's cabin of excavator, this hookup is provided with the connection status sensor.
Background technology
The hookup itself that is used at a distance annex being connected in the digger arm of excavator is known.Yet seldom such hookup has the sensor that is configured in self.Yet the such hookup that has sensor is known, and a kind of such hookup is open in the EP1318242 of Geith Patent Co., Ltd.This document discloses a kind of hookup, it has sensor and control electronic installation, this sensor is used to survey when hookup has been moved to encirclement position (crowd position) (promptly, complete crimped position), this control only is used for allowing beginning separable programming during in this encirclement position when this hookup with electronic installation.This encirclement position is regarded as being used for the home of separable programming, because surround the position at this, this hookup is configured to its preceding jaw and is directed upwards towards at least in part, annex to be connected thus or that separate can not drop from this hookup, the every other maintaining body that promptly is used in this annex is released entirely, and this hookup has had the connecting pin that is positioned at preceding jaw.
The link system that comes of another kind of prior art discloses in US2004/0244575.Its same searching is surrounded the position.Yet it is to realize by one full extension in the hydraulic cylinder that monitors digger arm, and promptly this cylinder makes that surrounding the position produces.
Although the instruction of prior art is arranged, yet still might use hookup by user error, for example, annex correctly is not connected to and just transmits annex on the hookup, before for example only the connecting pin of annex being hooked on the jaw and do not finish linker (that is, engage/lock onto in the deutomala of hookup) by second connecting pin with annex.This incorrect use will produce dangerous situation, because connector often can shake this preceding jaw, it can unexpectedly discharge from this preceding jaw if perhaps this arm and hookup curl.This danger is general especially, because whether this annex correctly is connected on this hookup always directly not visible, for example, when the user turns back to excavator after lunch, and because the frequent extreme weight of annex and big, particularly in mining industry, thus accidental separation can to the user and on every side personnel bring the grievous injury risk.
Summary of the invention
Therefore the present invention aims to provide a kind of mechanism, and this mechanism prevents or stoped the joint of user under the situation of so incorrect use of hookup.
According to the present invention, hookup is provided, and this hookup comprises first jaw, and this first jaw is roughly pointing on the longitudinal direction with respect to the framework of this hookup, this jaw is used to receive first connecting pin of annex, wherein is used to survey connecting pin existence therein for this jaw is provided with sensor.
Sensor can be suitable for output signal with expression connecting pin existing in this jaw.Replacedly or additionally, sensor can be suitable for output signal and not detect connecting pin existing in this jaw with expression.
The signal of sensor can be transmitted or send to receiving element or to conveyer, is delivered to the user with the indication of the information that allows to be detected.This transmission can perhaps can be wireless along lead, and for example radio transmits.Such RTTY feed technique is known at automotive field.For example there is not the bluetooth that key enters system, tire stress monitoring system and is used for mobile phone is connected in vehicle audio frequency system
System.
The user who is delivered to the information that is detected preferably sees, hears or feel indication, and he is in the driver's cabin of excavator simultaneously, and this hookup is connected on the excavator.Therefore, receiving element or display/indicator means for this reason can be integrated in the instrument panel of excavator.In another was arranged, receiving element or display/indicator means for this reason can be set to one or more independent parts, to be assembled on the excavator or in the excavator, still to be preferred in the driver's cabin of excavator.So whether the user in driver's cabin can be positioned in this first jaw by notified thus connecting pin.
Sensor can be a strain transducer.This can survey the existence of connecting pin in jaw, because annex and digger arm are all very heavy usually.Therefore, even annex rests on the ground, the weight of annex or the weight of arm will be exerted all one's strength by the connecting pin of annex usually and will be applied on this jaw.This power will be oppressed this jaw, produce detectable strain thus, may be in the throat of this jaw.Thus, the strain meter that is arranged in this jaw place or this jaw can be surveyed the existence of connecting pin at this jaw.
Other possible sensors can be feelers, for example, and PTM (pressing) switch.Yet other possible sensors can be that Magnetic Sensor-connecting pin is made by steel usually.Yet, it will be understood by those skilled in the art that many different sensors or its combination can be used to survey connecting pin in this jaw existence or do not exist.The advantage of strain transducer is that it can survey the existence of connecting pin, and no matter this pin props up wherein against this jaw, because strain will be distributed in around the throat of this jaw.
Hookup can also comprise second jaw, and its framework and this first jaw with respect to this hookup is longitudinally spaced apart.This second jaw preferably faces down in fact, that is, and approximately perpendicular to first jaw, and away from the end of the arm that is connected to the excavator on this hookup.This second jaw is used to receive second connecting pin of this annex, and it preferably is associated with pivot or slide lock, and this pivot or slide lock are used for second connecting pin is locked in this second jaw.Yet, in some known hookups, only provide pivot or slide lock-jaw to be omitted.
Preferably, sensor and second jaw or pivot or slide lock are associated.This second sensor can replace this first sensor, or it is other to remove this first sensor.
This second sensor preferably also is used to survey the existence and the disappearance of connecting pin.Yet this detection is for second pin, perhaps for pivot or slide lock, rather than for first jaw.
Preferably, this second sensor is directly installed on this pivot or the slide lock maybe in this pivot or the slide lock, perhaps on the replacement locking mechanism of this second jaw or in this locking mechanism.Yet, with its be arranged on pivot or slide lock on be most preferred in this pivot or the slide lock maybe because most of commercial hookup has hook pivot or sliding panel, so that such lock function to be provided.
Preferably, this second sensor is a strain transducer.Yet, can provide any suitable sensor, as for first sensor.
Second sensor can have the feature similar or identical with first sensor.Yet, when when receiving element transmits signal, the source of signal (that is, about they from sensor) distinguish by receiving element.For wirelessly transmitting, this can by use in transmitting signal the ID coding or even use single conveyer easily to realize, this single conveyer is used for transmitting in the mode that receiver can be approved the signal of two sensors.Such coding techniques is known in the RTTY feed technique, for example the tire pressure monitoring device.
It shall yet further be noted that sensor and conveyer can easily be reinforced by using the design for the research and development of tire pressure monitoring device, to deal with the environment that hookup is exposed to.After all, such prior art systems is designed to deal with the high-speed tire environment, and the relevant power that is wherein run into.Therefore, need not further to discuss the specific design of right sensors and conveyer herein.
The indicator unit that is used for the information that detected to user indication is preferably at the driver's cabin of excavator.It preferably has visual detector.They preferably provide the indication of the connection status of first and second jaws dividually,, whether connecting pin are arranged in each jaw that is.In simple embodiment, can use lamp for each jaw.For example, when connecting pin was positioned at relevant jaw, perhaps connecting pin when relevant jaw, can not lighted the lamp for this jaw.Therefore, the user can determine the annex engagement state of this hookup immediately.
In a preferred embodiment, green light is represented safety, and red light is represented danger.Therefore, when two jaws correctly are bonded on the pin, that is, the sensor of preceding jaw detects the existence of pin, and the sensor of back lock also detects the existence of pin, and two green lights then are shown on indicator unit.This has indicated the safety of annex on hookup to install.Yet,, can put and send out a warning if detect only pin.This has indicated unsafe installment state.
In replace arranging, when first jaw correctly during double pointed nail, can there be green light to show, and shows for the second jaw red light, sell up to this second jaw and second and correctly engage.
Can also be, when not having connecting pin to be detected, point gives a green light because this hookup can not be connected to annex, thus this be safe-do not have annex to fall down the risk of this hookup.This is useful, because hookup has the lifting hole usually, this lifting hole can be used to utilize chain or rope to promote article.
The 3rd sensor and the 3rd lamp can be incorporated in the hookup at the hydraulic cylinder place.It can detect the position of this latch mechanism by the state of determining cylinder.This status information can also be sent to receiver to analyze and assessment.Equally, can provide sensor to detect the orientation of this hookup.
These and other sensors can use real image with the state that makes up hookup with other sensors, with by control system analysis, this control system can provide suitable warning to the user when facing a danger situation, or only feed back to the user to assist connection or separable programming, because these programs need be carried out some steps usually, and in the time of ought finishing specific step (for example, the inversion of the withdrawal of cylinder/advance or hookup), this control system can be signaled the user.For various connections and separable programming, ask for an interview WO2008/029112 or GB0808113.5.
Detection system or receiver can be connected to hydraulic control system of excavator.Utilize such layout,, can limit the output of hydraulic system if detect unsafe state.For example, only detect a connecting pin for example in first (preceding) jaw, not only can make the red light that is used for the sensor of second jaw on the display unit light, and operational capacity that can the limited digging horn.For example, promote or oscillating motion can be limited, prevention or slack-off.The half-section stream that such restriction can provide for hydraulic pressure is provided with, perhaps for the limit rotation of oscillating structural member.These restrictions can stop unsafe excavation activity of carrying out, and do not use hydraulic pressure to come recovering state from danger but do not stop.Therefore the user can be prevented from or stop utilizing excavator and hookup to carry out unsafe operation.
Except control or restriction fluid power, the manipulation of excavator or engine power can also be connected to detection system, perhaps are connected to receiver, if detect dangerous or unsafe annex state thus, can also limit them.This is valuably, because it can additionally prevent excavator moving around in the job site, and annex is installed on the hookup improperly.This further prevents or has stoped incorrect operating personnel's operation, has further reduced the user thus oneself or other people are exposed to the possibility of its self-inflicted precarious position.
In one embodiment, sensor in addition or that separate has formed the part of machining tool recognition system.The machining tool that is used for such system additionally is provided with readable or transmissible indicator.This indicator can be that optics, magnetic, induction or electric capacity are readable, and perhaps it can be the signal that transmits, and the signal of this transmission can be received by the sensor of hookup and read.Such transmission can be via line, and perhaps they can be wireless.
In a preferred embodiment, this indicator is that bar code (and the sensor on this hookup is a barcode reader) or RF (radio frequency) transmit signal, this signal can be in response to the inquiry by the sensor on the hookup, perhaps in response to the circuit of finishing by the connection process.Such RF signal is preferably the form of the ID coding of transmission, perhaps is the form of the signal of more information, and this signal comprises ID coding and some other information available.
One or more in the preferably tell-tale or following parameter of other information available: tool types (promptly, scraper bowl, grab bucket or drill bit), instrument weight or instrument ability are (to allow operating personnel, perhaps excavator oneself knows/determines whether excavator is enough to deal with instrument), instrument sequence code (to allow to follow the trail of specific instrument), instrument service life or working cycles are (to allow operating personnel, perhaps excavator oneself know/whether the decision instrument can also use safely, perhaps whether it may stand fatigue failure), and tool construction (for example, connecting pin size or link pins know to allow hookup whether instrument can be installed on the hookup at interval).
Equally, sensor can be set to read information on hookup from excavator or digger arm.For this reason, excavator and/or digger arm can be provided with the indicator that can read in addition.The similar human readable indicator that is used for annex as described above can also be suitable for excavator and/or digger arm.
Replace being installed in other sensor on the hookup or in the hookup, this other sensor can be installed on the annex, perhaps on digger arm/excavator, so this hookup has readable/transmissible indicator.
Utilize these other sensor and indicators, can approve hookup, excavator and annex, and therefore, can adapt to the known limitation of annex, hookup or excavator with electronic installation by the control of excavator.For example, if for example the annex of drill bit is connected, then may want to limit this excavator about on annex, applying great lateral force in Drilling operating period.Utilize such tool identification system, can automatically apply such restriction with electronic installation, reduced thus or prevented to cause possibility operating personnel's mistake of annex grievous injury by the control of excavator.
Preferably, the information that is detected is sent to the receiver of excavator, handles with the OEMECU by excavator.This ECU preferably has memory, with the use information of storage for particular tool or annex.
Equally, preferably, ECU and memory bit are in hookup, can store thus about which annex and which excavator and be connected to information on this hookup, even allow hookup to have the intelligence of oneself, so that it can refuse to connect the annex outside the ability that drops on this hookup, that is, this annex is too heavy.
Other sensor can be arranged in the hookup, to detect the load that puts on hookup during using annex.These sensors can be above mentioned strain meters.During use, they can be used for detecting the overload of hookup.These overloads can be hookup (for example, jaw or latch hook) overload or promote the overload in hole or they can be the overloads of annex, for example,, hookup has maximum load capability, perhaps maximum excavation/Drilling power ability if being familiar with this annex.So this hookup can give the alarm with this overload situations of notifying operation personnel to operating personnel, perhaps it alternatively sends signal to notify this situation to the recipient/ECU of excavator, and thus, this excavator can automatically apply performance constraint.
Sensor can be provided in hookup or in annex or in excavator, think that hookup/annex/excavator provides trace ability, for example, by using the GPS sensor, and remember the combination that is connected of the sign of each annex/excavator/hookup and position.So institute's canned data can be used for locating certain products in the future, perhaps be used to follow the trail of moving of special article.The logistics and the goods of this permission company can be tracked.In addition, it can also assist to follow the trail of stolen annex or hookup.
Description of drawings
With reference to the accompanying drawings, by means of embodiment specific embodiments of the invention are described.
Fig. 1 schematically shows the excavator that is equipped with according to hookup of the present invention; And
Fig. 2 schematically shows the details of this hookup.
The specific embodiment
At first, show excavator 10, the hydraulic cylinder 20 that it comprises digger arm 12, driver's cabin 14, motor district 16, crawler belt 18 and is used to control the operation of this digger arm 12 with reference to Fig. 1.
In this embodiment, this annex 28 is scraper bowls, so normal operations is to excavate.
Referring now to Fig. 2, will the other details of hookup 24 be described.
Two arm tie points 26 are positioned in the top portion of hookup 24.Then, the bottom branch of hookup 24 has the annex link.Jaw 30 and deutomala 32 before they comprise, preceding jaw 30 and deutomala 32 respectively engage connecting pin, but this is on annex 28.For this purpose, preceding jaw 30 roughly longitudinally points to (that is, in Fig. 1 towards driver's cabin) with respect to the main shaft of hookup 24, and deutomala 32 points to downwards, that is, and and towards the main body of annex.Like this, preceding or first jaw 30 can be by picking up annex on first connecting pin that is hooked to this annex, and second connecting pin of annex can swing in the opening of the back or second jaw then.Then, via pivot latch hook 34, can close deutomala 32 and be used for fastening second connecting pin.Therefore, annex 28 is connected on the hookup 24 fully.
The above-mentioned feature of hookup all is traditional.Utilize known interchangeable mechanism of the prior art, they also are interchangeable.For example, additional fastening mechanism can be incorporated in this hookup, for example GB2330570 or WO2008/029112.In addition, replace pivot latch hook 34, the slip jam plate can be preferred.Equally, replace hydraulic cylinder 36, can be provided with means of threaded drives or only the lever retracting spring be used for moving this pivot or slide lock 34.
The rear portion of hookup 24 also is provided with and promotes hole 38.This allows to use rope or chain to promote article safely.
Member above all of shown hookup is known or traditional in the prior art.Therefore, their purposes and application separately no longer further are discussed.However, it should be understood that these hookups can provide with large-scale size, that is, be sized to and be applicable to large-scale excavator.
Creative feature of the present invention is following public additional member:
Hookup is suitable for comprising and detects and the communication technology.They are used for providing information via display to the excavating-machine operator of driver's cabin, although this information can provide in other places if desired.Yet the displaying of this information allows state hookup or any connection/separable programming, and for example " machining tool connection status " is communicated to the driver.Equally, its control system that can also be reported in the excavator is used to provide self interlocking, can prevent that operating personnel from carrying out unfavorable or unsafe operation in case finish this self interlocking, up to the correct verification that obtains the conditioned disjunction state of hookup by this system.
Can provide and manually surmount control.Yet, preferably, can avoid manually surmounting control to guarantee incorrect use not to take place.
(for example provide this interlocking or " not having flexible pattern (limp modes) ", underspeed, limit moving range or reduce hydraulic power) by preventing or avoid the risky operation of excavator or, will improving site safety greatly by minimizing or eliminate the misuse chance.
The detection in the embodiment shown and the communication technology comprise the selection sensor, and any one in this sensor can provide himself distinctive useful and useful information.First sensor 40 is the sensors that are provided for first jaw 30.It is used to survey connecting pin and whether is positioned at first jaw 30.This can be the sensor that activates of proximity transducer, contact or promote or parameter measurement sensor-for example, stress or strain measurement or checkout equipment.Show the throat that it is positioned at first jaw 30.This is that the typical case of connecting pin is provided with the position, so this often is the optimum position.Yet, can on the diverse location on this jaw 30, have, to guarantee to detect any connecting pin in this jaw more than a sensor.This is useful especially (for example, referring to community's design patent 000452271.0003) in the preceding jaw with two fillet throat.This is because second sensor in the wall that divides than large fillet of this jaw can also allow to detect larger-diameter connecting pin,, can not be installed to the connecting pin of back of the throat of jaw 30 that is.
Be second or deutomala 32 selectable or other sensor 42 is set.In this embodiment, it is arranged in pivot latch hook 34.This second sensor 42 can be identical with first sensor, and it also is used for surveying the existence of connecting pin at its jaw that is associated (deutomala 32).By being located in this hook, it only surveys this connecting pin when the joint of this connecting pin by this pivot latch hook 34.This has prevented the error detector of loose connecting pin.Yet,, utilize second sensor of the throat be positioned at this second jaw can obtain the detection of same degree if independent sensor has been surveyed the position of this hook.
On the other hand, the sensor more than can be set,, perhaps be incorporated into the different piece of this hook, if especially two connecting pins are from having different center to center pins annex at interval because different connecting pin can be engaged in the different piece of this jaw.
The hookup of this example embodiment also has the 3rd sensor 44, and this sensor is positioned on hydraulic cylinder 36 or the hydraulic cylinder 36.It can also be positioned at the supply line of this cylinder.This sensor is used to survey one of hydraulic pressure or hydraulic cylinder extension state, or the both surveys.This kind data can be used for allowing to determine state even better description of hookup.For example, allow to verify the position of pivot latch hook 34, perhaps can discern hydraulic fluid and leak.
Unshowned other sensors can comprise aspect sensor, are used for determining whether hookup is reversed, have been reversed how many degree.This can help to guarantee, when annex 28 is in dangerous position with respect to hookup, does not begin separable programming, that is, if deutomala is opened, it will fall down from hookup.
Other sensor can also be set to discern from annex self, for example from the information of the transponder in the annex, to survey type of attachment or attachment capability, this information can have potential use to central control unit, and this information can be stored in the transponder in the annex.
In the embodiment of example, show the different sensors parts in the parts that will be integrated into hookup.Like this, this hookup is customized to the sensor that is configured in wherein.However, it should be understood that and by the repacking mode sensor to be attached to existing hookup or known hookup design.Equally, the electronic installation that is associated (for example, seen in the central control unit 46 of the hookup in Fig. 2) can be configured on the framework of hookup in advance or be become the integration section of hookup 24 in the framework, perhaps they can be the adapters of repairing after-market.
In the embodiment of example, two sensors 40,42 at first be suitable for detecting connecting pin they separately jaw or the existence in the hook, and the 3rd sensor 44 is surveyed the hydraulic pressure in the hydraulic cylinder 36.So data that detected or by discontinuously or be sent to the control that is associated continuously and be used for analyzing with electronic installation perhaps are used to be passed to other control electronic installation, for example receiver in the driver's cabin 48.So the final state information about hookup is shown to the user, perhaps (perhaps in addition) these data work with electronic installation by rights by the control of excavator self, for example, the operation of permission excavator is perhaps carried out suitable " not having flexible pattern " for the hookup state of being surveyed.A lot of possible operations are arranged in this respect.For example, for each sensor, display can have the lamp of representing good or bad state, represent good detected state and red light is represented bad detected state as green light, when annex is connected on the hookup fully, display shows whole green lights, and when detecting annex and be connected on the hookup improperly, shows at least one red light.As long as the red light that indication is such will be carried out no flexible pattern probably for excavator.
As mentioned above, should be understood that the sensor of this jaw should be designed to survey multiple different connecting pin, for example, have the pin of different radii or have different center to center pins at interval.This is because excavator often uses the annex of number of different types, and needn't often have different pin interval or different pin radiuses from same manufacturer-so different annexes.In addition, connecting pin can be worn, and the pin between two of annex pins can change at interval over time thus.
Will also be understood that; this sensor should be able to be dealt with various harsh ambient conditionss; perhaps in various harsh ambient conditionss, be protected at least; hookup is exposed to these ambient conditionss possibly; for example; extreme temperature, often be exposed to lost material (as, stone, rock and mud), handle roughly and be immersed in the seawater, in the fresh water or in the mud.Such reinforcement sensor technology is known, for example from the contiguous field as the tire pressure monitoring device.
In a preferred embodiment, the pin sensor the 40, the 42nd in preceding jaw 30 and deutomala 32, stress and strain detecting sensor.This can survey the existence of connecting pin in jaw, because annex is very heavy usually, under the weight of the annex that is connected, this jaw will be exposed to very big load thus.Therefore, such stress or strain transducer can be surveyed the existence of connecting pin by surveying such power.In addition, because these power will act on around this jaw, rather than the ad-hoc location on this jaw (that is, the contact position between this pin and this jaw) only, to finish its function aspects, the position of this sensor is unimportant in the ability of definite this sensor.
Yet replacement is used for the stress or the strain transducer of this first or second sensor, and proximity transducer can be set.They can survey connecting pin approaching in this jaw.
In the embodiment of example, three sensors that illustrate, 40,42,44 wired ground or wirelessly be connected to central control unit 46, this sensor can be wired to central control unit 46, and perhaps they can have radio transmitter they self, that be constructed into itself.Therefore this central control unit 46 receives from the detection signal of these sensors and with this information and edits the receiver 48 of preparing to be used for sending to driver's cabin 14 as being interrupted bursty data (databursts).The receiver 48 that illustrates is in the driver's cabin of excavator 10, but it can be in other places, and it is connected in display.
Therefore receiver receives the transmission by wireless transmission, thereby this receiver can process sensor data and made the control system of display or excavator correctly work.Therefore the present invention allows hookup reliably himself hookup status information to be sent to driver in the driver's cabin of excavator.
Should be understood that the transmission and the receiver technology that are applicable to such transmission have development well in different field, comprise the tire pressure monitoring device.In addition, coding or the pair system for the right any necessity of such transmission/receiver also has good development in the prior art.Therefore, there is no need further discussion at this.
Replacement can use wired system to transmit data for the wireless transmission of driver's cabin.This has advantage-this sensor that need not local power supply at this hookup and can be powered by excavator its own power source system.Yet, preferred wireless transmission because they easier be incorporated in existing excavator and the hookup-they need minimized setting, and hookup is removed with maintenance from excavator easily.
For to the radio transmitter power supply, the power-supply system of carrying with hookup is set on hookup preferably.This can be the battery in the central control unit 46 simply.Yet, replacedly can generator be set on hookup, be used for producing that required electric energy-when hookup used, they had stood very big vibrations by recover kinetic energy.
If be provided with battery, other sensor can be set with the monitoring battery energy.Therefore sensing system can be provided with low energy content of battery signal in it transmits, warn this situation to operating personnel when detecting low energy content of battery state.
Display in the driver's cabin or man-machine interface (MMI) (being used to indicate sensor information or hookup status information) can be programmed to provide information by multiple mode, perhaps provide information with itself and the interactional different modes of excavator controller.
In a system, this signal can be changed into the vision indication, for example lamp or hookup state show, thereby when finishing some independent steps of connection and separation process, display can indicate the pilot operationp personnel to connect and separable programming by annex by image is provided.This is useful, because from can not be always very to information (for example, the position of pivot latch hook) in the driver's cabin.
Replacedly or additionally, in response to some situations about detecting, for example, annex is to the incomplete connection (for example, only in preceding jaw) of hookup, this interface can provide excavator function locking (that is, " not having flexible pattern ").Aspect this, can limit or stop specific excavator or digger arm moves, finish this linker up to.Replacedly, can reduce motor or hydraulic power, make thus and excavate and handle difficulty more.This will stop the driver to begin or continue the incorrect use of hookup/excavator.
Yet a preferred feature is when not having connecting pin to be detected, to allow the repertoire of excavator.This is to promote hole 38 because hookup is equipped with usually, and this lifting aperture is usually used in promoting the article on chain or the rope.This function of stopping using will be very inconvenience.In addition, do not have such freedom that moves under not-connected status, handle hookup and excavator so that first jaw is aimed at first connecting pin of new annex to be connected thereto the difficulty more that will become, this obviously is unfavorable.
About there not being flexible pattern, such pattern can be low dynamic mode, and wherein choke valve is restricted to maximum 1/4th flows.This motor that can be used for excavator also can only be used for hydraulic cylinder.
Can also know that the sensor 44 that is used for hydraulic cylinder 36 can provide the other control that surmounts, detect under the wrong situation thus that hydraulic system oneself will be enough to make no flexible pattern to work.
Some other optional features are as follows:
In order to make wireless transmission can be received device 48 approvals, transmission can be with the beacon information coding of uniqueness, and this beacon information can be transmitted with identification transmission sources hookup/sensor certainly.
Transmission may also comprise the details that is connected to the annex on the hookup, for example, and type of attachment information.This can be surveyed by the sensor on the hookup, and it can read out the information of the radio transceiver on annex.
Duty cycle information, for example employed hour or the circulation finished can be monitored by control system, and this duty cycle information is at the hookup place or the receiver place.This information can and be transferred into receiver at hookup place record, and perhaps at receiver place record, when needs, the annex with limited working life can tracked and repairing or replacing thus.
Equally, the information of other detections can be recorded or transmit, for example, machining tool identifying information, excavator identifying information, unpaired message, instrument applicability information are (for example, instrument ability, type or size), instrument or hookup (for example use information, current loading information) and tracked information (for example GPS locating information), this tracked information is used to allow transport automatically follows the trail of or cargo tracking, perhaps distinguishes from stored information in the future.
From above-mentioned open, therefore, the invention provides and be used for annex is connected to hookup on the digger arm of excavator, this hookup comprises first jaw, this first jaw is roughly pointing on the longitudinal direction with respect to the framework of this hookup, this jaw is used to receive first connecting pin of annex and have first sensor, this first sensor is used to survey connecting pin existence therein, this hookup also has second jaw or lock, this second jaw or lock are longitudinally spaced apart with this first jaw, this second jaw is used to receive second connecting pin of annex, and has second sensor, and this second sensor is used to survey connecting pin existence therein.As mentioned above, can increase other features subsequently.
Should be understood that the disclosure also provides additional embodiments, wherein other sensor has been replaced in preceding two sensors one or another or both.Yet, in most preferred embodiment, the sensor of hookup or central conveyor are suitable for transmitting or send signal to receiver, with the connection status of notifying driver or operating personnel's hookup or the load condition of hookup, so that keep the driver to understand these states, perhaps in more advanced embodiment, when identification problem, allow excavator to limit with electronic installation/hydraulic means application operating to control.
Although described the present invention, should understand the modification that to carry out details of the present invention also within the scope of the claims by means of example, possible replacement or supplementary features.
Claims (38)
1. hookup, it is used for annex is connected to the digger arm of excavator, this hookup comprises first jaw, this first jaw is roughly pointing on the longitudinal direction with respect to the framework of this hookup, this jaw is used to receive first connecting pin of annex, wherein is used for surveying the existence of connecting pin at this jaw for this jaw is provided with sensor.
2. hookup according to claim 1, wherein this sensor is suitable for output signal with expression connecting pin existing in this jaw.
3. hookup according to claim 1 and 2, wherein this sensor is suitable for output signal and does not detect connecting pin existing in this jaw with expression.
4. according to any one described hookup in the aforementioned claim, it combines with receiving element or conveyer, wherein the signal of this sensor is transmitted or sends to this receiving element or to this conveyer, is delivered to the user with the indication of the information that allows to be detected.
5. hookup according to claim 4, wherein this signal is transmitted or is sent along lead.
6. hookup according to claim 4, wherein this signal is transmitted wirelessly or sends.
7. according to any one described hookup in the aforementioned claim, it combines with display, and in use, this display is positioned at the driver's cabin of this excavator, this hookup is connected on the arm of excavator, and wherein the information that is detected from this sensor is displayed on this display.
8. hookup according to claim 7, wherein this display is integrated in the instrument panel of excavator or on the instrument panel.
9. according to any one described hookup in the aforementioned claim, wherein this sensor is one of in strain transducer, PTM (pressing) switch, Magnetic Sensor, optical pickocff and the capacitance sensor, or the one or more combination in this strain transducer, PTM (pressing) switch, Magnetic Sensor, optical pickocff and the capacitance sensor.
10. according to any one described hookup in the aforementioned claim, also comprise second jaw or lock, its framework and this first jaw with respect to this hookup is longitudinally spaced apart, is used for receiving or fixing second connecting pin.
11. hookup according to claim 10, wherein this second jaw or lock comprise pivot lock or slide lock, are used for connecting pin is locked in this hookup.
12., second sensor wherein is set is used for surveying the existence of connecting pin at this second jaw or lock according to claim 10 or 11 described hookups.
13. hookup according to claim 12, wherein this second sensor is directly installed on pivot or the slide lock or in pivot or the slide lock.
14. according to claim 12 or 13 described hookups, wherein this sensor is one of in strain transducer, PTM (pressing) switch, Magnetic Sensor, optical pickocff and the capacitance sensor, or the one or more combination in this strain transducer, PTM (pressing) switch, Magnetic Sensor, optical pickocff and the capacitance sensor.
15. according to any one described hookup in the aforementioned claim, wherein the signal from this or each sensor can utilize coding to be sent to receiving element, thus, about the signal that transmits from sensor, the source of the signal of this transmission or a plurality of source can be distinguished by this receiving element.
16. hookup according to claim 15, wherein in single transmission, central conveyor transmits signal from two or more sensors, and this transmission is encoded, thereby this receiving element can be distinguished independent signal and these signal sources.
17. according to any one described hookup in the aforementioned claim, combine setting with indicator unit, this indicator unit is used for to the information that detected of this user's indication from this hookup, and this indicator unit has the visual detector that is used to illustrate the information that is detected.
18. hookup according to claim 17, wherein, this indicator unit has the lamp for this first jaw, and when detecting connecting pin in this first jaw the time, this lamp illuminates.
19. according to claim 17 or 18 described hookups, when foundation claim 12, wherein this indicator unit has for this second jaw lamp of this lock maybe, when detecting connecting pin when this second jaw is maybe in this lock, this lamp illuminates.
20. according to claim 18 or 19 described hookups, wherein this lamp or each lamp are green light or red light.
21. according to claim 18,19 or 20 described hookups, wherein this indicator also has the lamp that is used to illuminate when not detecting connecting pin, wherein this lamp is the color different with other lamp.
22., also comprise one or more other sensors according to any one described hookup in the aforementioned claim.
23. hookup according to claim 22 wherein also comprises the actuator of the latch mechanism that is used to operate this hookup, wherein the 3rd sensor is incorporated in this actuator or on this actuator.
24. hookup according to claim 23, wherein this sensor detects the extension state of this actuator.
25. according to claim 23 or 24 described hookups, wherein this actuator is a hydraulic cylinder, this hydraulic cylinder is installed in the framework of this hookup.
26. hookup according to claim 25, wherein in this hookup or the sensor on this hookup detect hydraulic pressure in this cylinder.
27. according to any one described hookup in the aforementioned claim, also comprise the sensor of Work tool recognition system, be used to identify information about the annex that connects.
28. according to any one described hookup in the aforementioned claim, wherein on this hookup, sensor is set, is used in use surveying the load of the annex that puts on connection.
29. according to any one described hookup in the aforementioned claim, wherein on this hookup, sensor is set, is used in use surveying the load on the lifting hole that puts on this hookup.
30., also comprise the GPS alignment sensor and be used to store or the device of delivering position information according to any one described hookup in the aforementioned claim.
31. a driver who notifies excavator is connected in the method for annex engagement state of hookup of the end of digger arm, wherein this hookup is according to any one described hookup in the aforementioned claim, this method comprises the annex engagement state that uses this or each sensor to detect this hookup, and the information that is detected is transmitted or sends near the notification unit this driver.
32. method according to claim 30, wherein the red light on this notification unit is represented unsafe annex engagement state.
33. according to claim 30 or 31 described methods, wherein this sensing system or this reporting system are connected to this hydraulic control system of excavator, if detect unsafe annex engagement state thus, then limit the output of this hydraulic system.
34. according to any one described method in the claim 30 to 33, wherein this sensing system or this reporting system are connected to the engine management system of this excavator, if detect unsafe annex engagement state thus, then limit the power of this motor.
35. according to any one described method in the claim 30 to 34, wherein this hookup is according to any one described hookup in the claim 1 to 29.
36. according to any one described method in the claim 30 to 35, wherein this hookup has been stored in memory about this hookup annex that connect and/or that connected and/or the information of excavator.
37. according to any one described method in the claim 30 to 36, wherein this hookup has been stored annex and/or the position of excavator or the information of address that is being connected to and/or is being connected to about this hookup in memory.
38. according to any one described method in the claim 30 to 37, wherein this hookup transmits about this hookup annex that connect and/or that connected and/or the information of excavator, with by in the excavator or excavator on receiver receive.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0820116.2 | 2008-11-03 | ||
| GB0820116A GB2464988B8 (en) | 2008-11-03 | 2008-11-03 | Coupler with coupling status sensors |
| PCT/GB2009/002602 WO2010061165A1 (en) | 2008-11-03 | 2009-11-03 | Coupler with coupling status sensors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102224303A true CN102224303A (en) | 2011-10-19 |
| CN102224303B CN102224303B (en) | 2014-05-14 |
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| CN200980144237.4A Expired - Fee Related CN102224303B (en) | 2008-11-03 | 2009-11-03 | Coupler with coupling status sensors |
Country Status (5)
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|---|---|
| US (1) | US20110313625A1 (en) |
| EP (1) | EP2350396A1 (en) |
| CN (1) | CN102224303B (en) |
| GB (1) | GB2464988B8 (en) |
| WO (1) | WO2010061165A1 (en) |
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| CN105189876A (en) * | 2013-04-16 | 2015-12-23 | 卡特彼勒公司 | Method and system for detecting engagement with a work tool accessory |
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-
2009
- 2009-11-03 WO PCT/GB2009/002602 patent/WO2010061165A1/en active Application Filing
- 2009-11-03 US US13/127,059 patent/US20110313625A1/en not_active Abandoned
- 2009-11-03 EP EP09753174A patent/EP2350396A1/en not_active Withdrawn
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|---|---|---|---|---|
| CN105189876A (en) * | 2013-04-16 | 2015-12-23 | 卡特彼勒公司 | Method and system for detecting engagement with a work tool accessory |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2464988A (en) | 2010-05-05 |
| EP2350396A1 (en) | 2011-08-03 |
| GB2464988B (en) | 2013-01-30 |
| WO2010061165A1 (en) | 2010-06-03 |
| GB0820116D0 (en) | 2008-12-10 |
| GB2464988B8 (en) | 2013-02-20 |
| CN102224303B (en) | 2014-05-14 |
| US20110313625A1 (en) | 2011-12-22 |
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