CN103958812A - Powered safety curtains - Google Patents
Powered safety curtains Download PDFInfo
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- CN103958812A CN103958812A CN201280059043.6A CN201280059043A CN103958812A CN 103958812 A CN103958812 A CN 103958812A CN 201280059043 A CN201280059043 A CN 201280059043A CN 103958812 A CN103958812 A CN 103958812A
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- barrier
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Abstract
Powered safety curtains are disclosed herein. An example safety barrier assembly to control access to equipment includes a track and a barrier including a receptacle. The barrier is to be moveable within the track between an open position and a closed position. The open position is to enable access to the equipment, the closed position to substantially prevent access to the equipment. The example safety barrier assembly also includes a sensor to identify when the safety barrier is in the closed position and a securing device comprising a portion to be received by the receptacle when the barrier is identified as being in the closed position. An interaction between the portion and the receptacle is to prevent the barrier from moving out of the closed position.
Description
Related application
The application is the U. S. application No.13/288 submitting on November 3rd, 2011,790 part continuation application, and the full content of this application is incorporated herein by reference.
Technical field
Present invention relates in general to barrier, more particularly, relate to motor-driven blind.
Background technology
In order to help to avoid damage, safety curtain to be generally used for controlling touching moving machine or dangerous machinery.The example of these machines can comprise machining center, sawing machine, shearing machine and bending press.Some safety curtains have movable access door, and it has the various sensors for determining that door is opened or closed.In some cases, in order to prevent from touching insecurely machine, automatic locking prevent door unexpectedly open.
Accompanying drawing explanation
Fig. 1 is the elevation of the exemplary barrier in its curtain situation in an open position.
Fig. 2 is the elevation of barrier shown in Fig. 1, but illustrates in opening and closing the curtain in the centre position between position, and shows a part for track section.
Fig. 3 is the elevation of barrier shown in Fig. 1, but a part for curtain in the closed position and track section is shown.
Fig. 4 is substantially along the sectional view of the line 4-4 intercepting of Fig. 2.
Fig. 5 is substantially along the sectional view of the line 5-5 intercepting of Fig. 3.
Fig. 6 illustrates exemplary second and the schematic diagram of the operative configuration of the 3rd safety device.
Fig. 7 is and the similar schematic diagram of Fig. 6, but shows another operative configuration of the exemplary second and the 3rd erecting device.
Fig. 8 is and the similar schematic diagram of Fig. 6, but shows another operative configuration of the exemplary second and the 3rd erecting device.
Fig. 9 is and the similar schematic diagram of Fig. 6, but shows the another operative configuration of the exemplary second and the 3rd erecting device.
Figure 10 is and the similar cross section view of Fig. 4, but shows exemplary cleaning device.
Figure 11 is and the similar cross section view of Fig. 5, but shows the exemplary cleaning device shown in Figure 10.
Figure 12 is and the similar cross section view of Fig. 4, but shows another example safety device.
Figure 13 is and the similar cross section view of Fig. 5, but shows the example safety device shown in Figure 12.
Figure 14 means the figure of the machine readable instructions that can be performed to implement Fig. 1-13,16 and 17 apparatus shown.
Figure 15 can carry out instruction shown in Figure 14 to implement the block diagram of the exemplary process system of Fig. 1-13,16 and 17 apparatus shown.
Figure 16 and 17 is the sectional views that can be used for implementing the exemplary safety curtain of example disclosed herein.
The specific embodiment
Example disclosed herein for example relates to, by the state based on machine (, safe condition, unsafe condition) and to allow or to stop to approach the security system that machine can be operated machine safely.In some instances, security system comprises barrier or curtain, one or more wireless interlocking switch and/or one or more fastening devices or solenoid.In operation, when barrier arrives fastening position, wireless interlocking switch can be activated, and it sends a signal to safety relay, processor, control system and/or safety PLC input unit then.Barrier based on receiving is in closing and/or the information of downward position, and control system can produce and/or transmit a signal to fastening devices, so that the lock pin that is associated engaging with barrier stretches out.In some instances, electric power is supplied to fastening devices retracts lock pin, and electric power is removed so that lock pin stretches out from fastening devices.
When lock pin stretches out and barrier is fixed on to fastening position, the contact of fastening devices and/or locking switch can be activated, and it carries one or more signals to the second safety relay and/or safety PLC input unit then.When control system receives safety relay or safety PLC input unit and is all the information activating, control system can determine that barrier is fixed on fastening position.In using the example of safety relay, the specified output device of safety can be connected in series.In some instances, control system can be attached to security system (for example, one or more elements of security system) communicatedly.In some instances, the remote controlled security system of control system or be integrated into security system.
Exemplary barrier for machine protection and other application disclosed herein comprises the roller shutter of vertical movement, and wherein multipurpose guide plate is attached to the lower corner of curtain.In some instances, the guide plate weight that increase is of practical significance to curtain.Although additional mass has increased the inertia of object, in fact the impost of guide plate has increased the closing velocity of some curtains.In some instances, guide plate also allows or has strengthened the operation of three safety devices.In some instances, the part of one or more safety devices is carried by guide plate.In some instances, the quality being of practical significance of guide plate provides additional downward momentum to the lower leading edge of the curtain of just closing.The downward momentum that increases curtain provides additional force, and in certain embodiments, this additional force contributes to make curtain remain on the lock forced engagement of its fastening position.In some instances, guide plate provides hard stop edge to soft leading edge curtain.
Fig. 1-5 illustrate has on selected opening 14 the movably exemplary barrier 10 of exemplary curtain 12.Fig. 1 illustrates the leading edge 16 of curtain 12 in exposing the open position of opening 14, and Fig. 2 and 4 illustrates leading edge 16 between it opens and closes position, and Fig. 3 and 5 illustrates leading edge 16 in its fastening position, and wherein curtain 12 blocks opening 14.
Although barrier 10 can be used in various application, barrier 10 comprises some security features, and these features can make barrier 10 as very useful for selectively touching the protector of proemial machine 18.Barrier 10 even still has and can keep the machine of momentum of danger level particularly useful in a period of time for protection after closing.The example of machine 18 includes but not limited to machining center, sawing machine, shearing machine, bending press etc.
In order to open or close barrier 10 by raising respectively or reducing curtain 12, example shown barrier 10 comprises motor-driven driver element 20, and it comprises the motor 22 of swing roller 24, and curtain 12 is wrapped on this cylinder 24.Depend on the direction of rotation of being determined by controller 26, cylinder 24 optionally upwards pulls curtain 12 to expose opening 14 or to loosen curtain 12 to reduce curtain across opening 14.When reducing curtain 12, cylinder 24 controllably discharges curtain 12, and the weight of curtain 12 helps to pull curtain 12 downwards simultaneously.In order to help to guide the vertical motion of curtain 12, in this example, curtain 12 comprises lateral edges 28, and each lateral edges extends in the groove 30 (Figure 4 and 5) in cardinal principle vertical rail 32.When barrier 10 is closed, the track 32 engaging with the lateral edges 28 of curtain 12 helps to support curtain 12 along the vertical length of curtain 12.
Term " curtain " refers to the material sheet when along the location of perpendicular roughly, this material sheet provides insignificant vertical support substantially, because this material sheet is often crooked or folding under the weight at himself when along it, vertical length is not supported.The example of curtain include but not limited to fabric one or more layers, pliable and tough polymer sheet one or more layers, flexible curtain etc.Term " motor-driven driver element " refers to any electrical equipment that can improve or reduce curtain when relating to curtain.The example of motor-driven driver element includes but not limited to that cylinder that motor drives (for example, cylinder by motor, hydraulic motor or air motor rotation), winch, hoist and linear-motion actuator (leading screw that for example, linear motor, motor drive, hydraulic cylinder, pneumatic cylinder etc.).Term " controller " refers to any electrical system that control signal is provided.The example of controller includes but not limited to computer, programmable logic controller (PLC) (PLC), circuit, electromechanical relay and their various combinations.
In the example shown, barrier 10 comprises two multipurpose guide plates 34 of the lower corner that is positioned at curtain 12.In some instances, each guide plate 34 comprises curtain 12 is clipped in to two plates 34 therebetween.In some instances, guide plate 34 provides and allows or promote curtain 12 declines and/or permission or promote three safety devices and/or the several functions of sensor 36,38 and 40 (Fig. 1 and 4) operation.In some instances, the first safety device 36 is a kind of Non-Contact Proximity Sensor when barrier 10 closes that detect, the second safety device 38 is a kind of electric mechanical switch with electrical contact, this electrical contact response barrier 10 is closed and is forced to physically close (or being forced to open), and the 3rd safety device 40 is mechanical locks that solenoid discharges.In some instances, barrier 10 has six safety devices, wherein one group of safety device 36,38 and 40 lateral edges 28 places of curtain 12 be arranged on leading edge 16 near, another group safety device 36,38 and 40 28 places, opposite side edge of curtain 12 be arranged on leading edge 16 near.Although details and the example of safety device 36,38 and 40 will be explained hereinafter, first the multi-functional of some examples of guide plate 34 will be described below:
First, in some instances, guide plate 34 has increased the weight being of practical significance to the lower end of curtain 12, to help keeping curtain 12 vertically to strain, and when driver element 20 controllably discharges curtain 12, helps to pull curtain 12 downwards.In order to ensure guide plate 34, on curtain 12, apply downward pulling force, guide plate 34 is made by the material finer and close than the material of curtain 12.Therefore, guide plate 34 has the weight that forces curtain 12 to move down in closing process.In some instances, guide plate 34 is formed from steel, and curtain 12 comprises polymer sheet.
The second, in some instances, one or more guides 42 and/or 44 (Fig. 2 and 4) are attached to guide plate 34, to limit in the horizontal direction lax of curtain and/or curtain 12 is strained in the horizontal direction substantially.Guide plate 34 is placed on guide 42 and 44 in track 32, and because guide 42 and 44 is not suitable for by the groove 30 of the relative narrower of track, so prevent that the lower end of the lateral edges 28 of curtain from pulling out in track 32.
The 3rd, in certain embodiments, the guide 42 and 44 that is attached to guide plate 34 is provided for installing the good firm place of the first wireless portion 36a of the first safety device 36.When barrier 10 is closed, in order to ensure accurately aiming between the first wireless portion 36a of the first safety device 36 and the first electric part 36b, in some instances, guide 42 (and/or guide 44) has inclined surface or band tapering surface 46, and it is configured as and engages ordinatedly about the fixing band tapering lead-in surface 48 of track 32 (the first band tapering lead-in surface).Guarantee for example, all correctly to aim at about the part 36a of safety device 36 and relatively vertically location and the level interval between 36b (, part 36a adjacent one another are, 36b) with the inclined surface 46 engaging with tapering lead-in surface 48.In some instances, guide plate 34 provides hard stop edge, bottom 33 for curtain 12.When leading edge 16 relative flexibility of curtain, along with edge 33 engages with the end stop 35 on track 32, more rigid hard stop edge 33 provides more accurate halt for curtain 12.
The 4th, in some instances, guide plate 34 is provided for increasing the device of the second wireless portion 38a of the second safety device 38 to curtain 12.In some instances, the second wireless portion 38a is the mechanical actuator that is the form of sheet metal or tongue piece 50, and it extends and can be inserted in the groove 52 of shell 54 of the second electric part 38b that comprises the second safety device 38 from guide plate 34.
The 5th, in some instances, guide plate 34, for curtain 12 provides enough downward momentum 56 (Fig. 7), engages to force the 3rd wireless portion 40a to set up locking with the 3rd electric part 40b of the 3rd safety device 40.In some instances, the second and the 3rd wireless portion 38a and 40a share the common structure of the form that is multipurpose actuator.In the example shown, the actuator of wireless portion 38a and 40a share common (for example, tongue piece 50).In addition in some instances, in the second and the 3rd electric part 38b and 40b, be all contained in identical common enclosure 54.In the example shown, the shell of electric part 38b and 40b share common.Term " common actuator " and " common shell " refer to that two or more parts share same structure.
Although the structure of safety device 36,38 and 40 and application can many different modes be implemented and/or carry out, in some instances, the first safety device 36 provides a kind of contactless device of whether cutting out for detection of barrier 10.As previously mentioned, the first safety device 36 comprises the first electric part 36b and the first wireless portion 36a.Term " wireless " refers to when relating to first, second, and third wireless portion 36a, 38a and 40a, and in the situation that wire non-conducting electric power is to project or non-conducting, the signal of telecommunication project (for example, wireless portion 36a) from project works.Term " wireless " might not mean that related project (for example, wireless portion 36a) does not have internal circuit completely.In some cases, for example, the first wireless portion 36a comprises the RFID device with internal circuit, and this internal circuit is subject to the external drive from the electromagnetic radiation of some examples of the first electric part 36b.
The example of the first wireless portion 36a includes but not limited to magnet, ferrous piece, reflector (for example, bar code, white marking, reflectorised paint, minute surface) and RFID device, etc.The first wireless portion 36a more specifically example includes but not limited to, the model being provided by the Jokab Safety company of state of Michigan Westland is the product of Eva p/n20-046-xx; The non-wired or wireless part of the Allen-Bradley Sensaguard switch providing with Rockwell Automation company by Milwaukee, the state of Wisconsin.The example of the first electric part 36b includes but not limited to, the model being provided by the Jokab Safety company of state of Michigan Westland is the product of Adam p/n2051-xx; The wireline side of the Allen-Bradley Sensaguard switch providing with Rockwell Automation company by Milwaukee, the state of Wisconsin.
For the first safety device 36 is installed, some examples of guide 42 are made by nonferrous material (as plastics, aluminium, brass), and comprise recess or the recess 58 that the first wireless portion 36a is installed.Recess 58 helps to protect the first wireless portion 36a to be damaged by preventing the inner surface of the first wireless portion 36a friction track 32, and the nonferrous material quality of guide 42 minimizes possible Communication Jamming between the first electric part 36b and the first wireless portion 36a.In some instances, for the carriage assembly 60 of the first electric part 36b is installed, comprise various grooves 62, it is provided for regulating the device of the position of the first electric part 36b.
In some instances, the second safety device 38 comprises the second electric part 38b and the second wireless portion 38a, and these parts are provided for the actual physics contact device of determining whether barrier 10 closes.In some instances, the second wireless portion 38a (for example has physical features, the edge of thickness, width and/or tongue piece 50) mechanical component, when barrier 10 is closed, this physical features is physically closed the electrical contact 64 in the second electric part 38b of (or opening in some instances) second safety device 38.The inside electric mechanical switch that the example of the second electric part 38b includes but not limited to the protection locking switch that Allen-Bradley model that the Rockwell Automation company by Milwaukee, the state of Wisconsin provides is 440G-MT (for example, switch 66) and wired contact or electrical contact (for example, contact 64); With the Euchner-USA by Syracuse, east, New York (EastSyracuse), Inc. the Euchner model that company provides is inside electric mechanical switch and wired contact or the electrical contact (for example, contact 64) of STA3A-4141A024RC18 safety switch.
The example of the second wireless portion 38a includes but not limited to the switch moving characteristic of the mechanical actuator (for example, mechanical actuator p/n440K-A11112 or 440K-A17116) of the protection locking solenoid switch that Allen-Bradley model that the Rockwell Automation company by Milwaukee, the state of Wisconsin provides is 440G-MT; With the Euchner-USA by Syracuse, east, New York, the switch moving characteristic of the mechanical actuator of the safety switch that the Euchner model that Inc. company provides is STA3A-4141A024RC18.In addition or alternatively, other example of the second wireless portion 38a includes but not limited to be clipped between two guide plates 34 and outstanding tongue piece, the protuberance that extends integratedly from guide plate 34 be (wherein downwards from guide plate 34, " from guide plate 34, extend integratedly " and refer to that this protuberance and guide plate comprise single piece, and protuberance is not connected to the seam of guide plate) and fix or be welded to tongue piece and the protuberance on guide plate 34.
In some instances, the 3rd safety device 40 comprises for guaranteeing that under some predetermined condition curtain 12 is physically remained locked in the 3rd electric part 40b and the 3rd wireless portion 40a of its fastening position.In some instances, the 3rd wireless portion 40a comprises that lock-in feature (for example, opening 70 in tongue piece 50), when barrier 10 is closed, the spring that this lock-in feature makes the 3rd wireless portion 40a be hooked in or be locked in and extends from quadrature loads the plunger 72 of solenoid 74 extensions.In some instances, tongue piece 50 comprises the physical characteristic for the second and the 3rd wireless portion 38a and 40a.The example of the 3rd wireless portion 40a includes but not limited to the lock-in feature of the mechanical actuator part (for example, p/n440K-A11112 or 440K-A17116) of the protection locking solenoid switch that Allen-Bradley model that the Rockwell Automation company by Milwaukee, the state of Wisconsin provides is 440G-MT; With the Euchner-USA by Syracuse, east, New York, the lock-in feature of the mechanical actuator part of the safety switch that the Euchner model that Inc. company provides is STA3A-4141A024RC18.
In some instances, the 3rd electric part 40b comprises solenoid 74, solenoidal electric terminal 76, plunger 72 and plunger 72 is urged to the spring 78 of its normal extended position (Fig. 6 and 8) from its retracted position (Fig. 9).By terminal 76, can drive solenoid 74 that plunger 72 is retracted to its retracted position from its normal extended position to solenoid 74 energisings.If plunger 72 is not additionally limited to extend, make solenoid 74 power-off allow spring 78 to extend plunger 72.The example of the 3rd electric part 40b includes but not limited to the internal electrical solenoid of the protection locking switch that Allen-Bradley model that the Rockwell Automation company by Milwaukee, the state of Wisconsin provides is 440G-MT; With the Euchner-USA by Syracuse, east, New York, the internal electrical solenoid of the safety switch that the Euchner model that Inc. company provides is STA3A-4141A024RC18.In some instances, as previously mentioned, the second and the 3rd electric part 38b and 40b are contained in common enclosure 54.
The illustrative methods of operation barrier 10 is as follows.Referring to figs. 2 and 6, curtain 12 is fallen at a predetermined velocity to close barrier 10 in the output signal 80 command driven unit 20 of controller 26.In some instances, predetermined speed changes on the stroke of curtain 12, and for example, curtain 12 accelerates and slows down.Arrow 82 in Fig. 2 represents to fall at a predetermined velocity curtain 12.Except driver element 20 controllably discharges curtain 12, the weight of curtain, comprises the weight of guide plate 34, is provided for moving down the downward force being of practical significance 84 of the leading edge 16 of curtain.Fig. 2 illustrate due to curtain 12 advance downwards at a predetermined velocity produce be of practical significance size downward momentum 86.In some instances, especially at curtain 12, contain in the example that polymer sheet material and guide plate 34 contain metal material, the guide plate 34 of advancing together with curtain 12 provides the downward momentum of the curtain 12 of quite large percentage.
Along with leading edge 16 approaches its make position shown in Fig. 3, Fig. 5 and Fig. 8, beveled edge 46 engages with lead-in surface 48, with wireless portion 36a, 38a and 40a are physically directed to corresponding electric part 36b, 38b and 40b upper and by wireless portion 36a, 38a and 40a with electric part 36b, 38b and 40b correctly aim at accordingly.Term " correctly aligning " and derivative thereof refer to realizes the level of expected result and/or vertical location.Part 36a, 36b, 38a, 38b, 40a, 40b can correctly be aimed at, at this moment appropriate section 36a, 36b, 38a, 38b, 40a, 40b relative to each other adjacent, engage and/or fixing.In addition or alternatively, the lower limb 88 of tongue piece 50 engages with the secondary lead-in surface 90 (Fig. 4) on distance piece 91, so that tongue piece 50 is directed in the groove 52 of shell 54.In other words, secondary lead-in surface 90 is directed to tongue piece 50 in switch housing.
In some instances, along with making tongue piece 50, guide plate 34 drops in groove 52, as shown in Figures 6 and 7, tongue piece 50 at a time with close/open contact 64 (for example contact mobile member 92, button, lever, trigger etc.) engage (for example, from often reaching, be forced to close or open to being forced to from normally closed).Open or close contact 64 and provide the signal (for example, feedback signal) 94 that represents that barrier 10 is opened or closed for controller 26.
In addition, in some instances, when tongue piece 50 enters in groove 52, tongue piece 50 engages with plunger 72, and wherein plunger 72 is parts of the 3rd electric part 40b of the 3rd safety device 40.Fig. 7 illustrate barrier 10 apply promote the 3rd wireless portion 40a (as tongue piece 50) and the 3rd safety device 40 the 3rd electric part 40b (for example, plunger 72) set up the power of closing 96 that locking engages, wherein close in some instances the combined result that power 96 comprises the weight of curtain and the downward momentum 86 of curtain.Fig. 7 for example also illustrates, when (closing power 96 promotion the 3rd wireless portion 40a (as tongue piece 50) and the 3rd electric part 40b, while the plunger 72 of the 3rd electric part 40b) setting up locking joint, the 3rd electric part 40b of the 3rd safety device 40 at the 3rd wireless portion 40a (for example, on tongue piece 50) on (for example apply, by spring 78 and plunger 72) resistance 98 that makes progress, wherein close power 96 and be greater than resistance 98 upwards.
In some instances, as shown in Figure 2, driver element 20 applies downward centripetal force 100 by controllably discharging curtain 12 to curtain 12.Fig. 2 also shows by curtain 12 and guide plate 34 part of downward centripetal force 100 102 (is for example passed to the 3rd wireless portion 40a, pass to tongue piece 50), the part 102 that wherein arrives the downward centripetal force 100 of the 3rd wireless portion 40a is less than the 3rd electric part 40b (for example, plunger 72) and is applied to the resistance making progress 98 on the 3rd wireless portion 40a.Therefore,, although part 102 helps positive lock the 3rd safety devices 40, in some instances, only part 102 deficiencies are so that tongue piece 50 locks is bonded in the shell 54 of the 3rd safety device 40.Therefore, in this example, the combined result of closing force 96 comprises the weight of curtain 12, the downward momentum 86 of the size that is of practical significance and the downwards part 102 of centripetal force 100.
In Fig. 2, also illustrate, when falling curtain 12, by limiting the predetermined decrease speed of curtain 12 and relying on the weight of curtain 12 and/or the weight of guide plate 34, barrier 10 is avoided curtain 12 warpages and is kept curtain 12 in the vertical directions roughly to strain.In some instances, constantly, driver element 20 is restricted to the decrease speed of curtain 12 decrease speed that is less than the end free falling speed of object or is less than in some instances the curtain 12 of being realized separately by gravity to some that decline at curtain 12.
In order to control the operation of barrier 10, in some instances, the first electric part 36b of the first safety device 36 by combination communicatedly (for example, via wired or wireless connection) with carry first and/or feedback signal 104 to controller 26, the second electric part of the second safety device 38 by combination communicatedly (for example, via wired or wireless connection) to carry secondary signal 94 to controller 26, controller 26 is by wired and/or communicatedly for example, in conjunction with (, via wired or wireless connection) to the 3rd electric part 40b of the 3rd safety device 40 to carry excitation and/or output signal 106 to solenoid 74, and controller 26 by combination communicatedly (for example, via wired or wireless connection) to driver element 20 to carry for controlling the output signal 80 of the operation of driver element 20.In addition, in some instances, controller 26 by communication in conjunction with (for example,, via wired or wireless connection) for example to receive, from the expression machine 18 of device 110 machine condition signal 108 under predetermined safe condition (, stop, motionless) whether.As previously mentioned, barrier 10 even still has and can keep the machine (machine 18) of the momentum of danger level particularly useful in a period of time for protection after closing; Therefore, in some instances, machine condition signal 108 is for determining whether the 3rd electric part 40b switches between its activation and dead status, thereby whether definite the 3rd safety device 40 discharges curtain 12.In some instances, signal 80,94,104,106 and 108 is used as follows:
Once the first and second safety devices 36 and 38 determine that curtains 12 are closed and the 3rd safety device 40 by curtain 12 lockings be maintained in its closed position, controller 26 with regard to response from the feedback signal 104 of corresponding the first safety device 36 and the second safety device 38 and 94 and allow and/or order machine 18 starts operation (machine 18 is in running status).In some instances, safety device 36,38 and 40 triggering or actuating substantially occur simultaneously, perhaps only have some unessential time lags.Triggering and/or actuating can substantially occur to consider by for example curtain 12 simultaneously and move to the caused time lag of complete fastening position.After machine 18 starts, in some instances, controller 26 for example prevents that barrier 10 from opening, until represent that from the machine condition signal 108 of device 110 machines 18 are safe or (, in a safe condition) that stop.In some instances, controller 26 prevents that by maintaining and/or allow between the 3rd electric part 40b and the 3rd wireless portion 40a to engage curtain 12 from opening.In some cases, due to the momentum of machine, immediately machine 18 may be safe or (for example, in the situation that machine 18 moves due to momentum under the state of machine 18 in sliding) that stop in machine 18 power-off or after closing.
Status signal 108 represent to open barrier 10 safe after, in some instances, controller 26 is exported to the signal 106 of solenoid 74 energisings.In some instances, give solenoid 74 energisings for example, by making plunger 72 discharge the 3rd wireless portion 40a (, tongue piece 50) from the interior retraction of opening 70.Then, controller 26 output signals 80 are given driver element 20, to promote curtain 12.
In some instances, as shown in FIG. 10 and 11, barrier 10' comprises cleaning device 112, for for example, removing dust and other pollutant from one or more safety devices (, the first safety device 36).In some instances, compare to the resistance that the curtain 12 opened under the power of driver element 20 provides with cleaning device 112, cleaning device 112 provides less resistance to the curtain 12 of closing under deadweight.In some instances, cleaning device 112 comprises the brush 114 that extends from pivot rods 116 (for example, bristle, wiper, etc.).In some instances, magnet replaces brush 114 or except brush 114, is used as from one or more safety devices 36,38 and/or 40 devices of removing containing iron contaminants.In the example illustrated of brush 114, pin 118 is pivotally connected to guide 42 by bar 116.The second pin 120 limit rods 116 rotatablely moving around pin 118.Along with driver element 20 upwards promotes curtain 12, as shown in figure 10, the surface of the first electric part 36b that the moving upward of curtain 12 upwards pulls inswept the first safety device 36 of brush 114.The surperficial brush 114 of inswept the first electric part 36b of making progress forces the counterclockwise pivotable of bar 116, as shown in figure 10, until the second pin or stopper section 120 stop the rotation of bar 116.This navigates to brush 114 by cleaning device 112 can be applied with the position of the cleaning pressure of practical significance on the surface of the first electric part 36b.
Subsequently, when barrier 10' closes and when curtain 12 declines, the surperficial brush 114 of inswept the first electric part 36b makes cleaning device 112 tilt to clockwise the position shown in Figure 11 downwards.In this obliquity, relatively little friction is present between brush 114 and the surface of the first electric part 36b, there is no the resistance being of practical significance from brush 114 thereby curtain 12 can easily decline.
In addition or alternatively, cleaning device 112 is used for the surface of clean the first wireless portion 36a in a similar fashion.In these examples, cleaning device 112 attaches to the place, a certain permanent position with respect to track 32 pivotly, and when barrier 10' open and/or closed the surface of inswept the first wireless portion 36a of brush 114.Example is as shown in FIG. 10 and 11 the same, and cleaning device 112 is still configured to when curtain 12 rises than larger friction brush power is provided when curtain 12 declines.
In some instances, as shown in Figures 12 and 13, barrier 10 " comprising: the second safety device 122, it comprises the second wireless portion 122a and the second electric part and/or proximity transducer 122b; With the 3rd safety device 124, it comprises opening or socket 70 and the 3rd electric part and/or the solenoid 124b that is arranged in tongue piece or extension 50.In some instances, the second electric part 122b is proximity transducer (for example, electric eye, hall effect sensor, etc.), and the second wireless portion 122a is the axial vane surface of solenoidal plunger 126, and the 3rd electric part 124b is solenoid.
As shown in figure 13, make solenoidal plunger 126 extend through opening 70 by curtain 12 lockings and remain on its fastening position.When the 3rd electric part 124b fully extends, the second electric part 122b detects the existence of the second wireless portion (for example, the axial vane surface of plunger) 122a, thereby determines that the 3rd safety device 124 is activated completely.When the second electric part 122b detects the second wireless portion 122a simultaneously the first safety device 36 senses curtain 12 in its fastening position, controller 26 is determined barrier 10 in the situation that curtain 12 is locked in its fastening position " be reliable.
Figure 14 means the flow chart of the example machine readable that can be performed to implement Fig. 1-13 apparatus shown.The example machine accessible instructions of Figure 14 can be performed with based on FEEDBACK CONTROL barrier system.Example process shown in Figure 14 can be carried out with processor, controller and/or any other suitable treating apparatus.For example, example process shown in Figure 14 can be used and be stored in tangible computer-readable medium, for example, such as the coded command (, computer-readable instruction) on flash memory, read-only storage (ROM) and/or random access memory (RAM), implement.As used herein, the tangible computer-readable medium of term is clearly defined as to be comprised the computer-readable memory of any type and gets rid of transmitting signal.In addition or alternatively, example process shown in Figure 14 can be used and be stored in non-temporary computer readable medium, for example, such as flash memory, read-only storage (ROM), random access memory (RAM), high-speed cache or information (is stored to any duration, under the time period extending, permanent, briefing, for temporary transient buffering and/or the buffer memory to information) any other storage medium on coded command (for example, computer-readable instruction) implement.As used herein, the non-temporary computer readable medium of term is clearly defined as to be comprised the computer-readable medium of any type and gets rid of transmitting signal.
Alternatively, any combination that partly or entirely can use special IC (ASIC (one or more)), programmable logic device (PLD (one or more)), field programmable logic device (FPLD (one or more)), discrete logic, hardware, firmware etc. of the exemplary block shown in Figure 14 is implemented.In addition, the exemplary block shown in Figure 14 partly or entirely can be manually or as any combination of any preceding method, for example, any combination of firmware, software, discrete logic and/or hardware is implemented.In addition, although the example process shown in Figure 14 is described with reference to the flow chart shown in Figure 14, other method of implementing process shown in Figure 14 can be used.For example, the order of carrying out square frame can change, and/or more described square frames can be changed, cancel, segment or combine.In addition, the exemplary block shown in Figure 14 partly or entirely can be performed in order and/or concurrently by the processing threads such as independent, processor, device, discrete logic, circuit etc.
For example, when controller 26 from the barrier information of the first electric part 36b, the second electric part 38b and/or the 3rd electric part 40b (receives, feedback), and/or when controller 26 receives the machine state information (square frame 1402) from machine 18, the example process shown in Figure 14 starts.In some instances, barrier information comprises the information of, permanent position in the closed position about the curtain 12 of barrier 10, on-fixed position, open position etc.In some instances, machine information comprises the information in non-security state, safe condition, running status etc. about machine 18.
Controller 26 determines that whether barrier 10 is in the state of being fixed (square frame 1404).The curtain 12 that controller 26 can the feedback (for example, barrier information) based on from the first electric part 36b and/or the second electric part 38b be determined barrier 10 is in the state of being fixed.If barrier 10 is not when being fixed state, controller 26 is determined whether to make barrier 10 to move to fastening position and is fixed this barrier (square frame 1406) by feedback and/or the feedback based on receiving at square frame 1402 of for example asking and for example receive, from operator user interface (, monitor, keyboard etc.).
If barrier 10 is when being fixed state, controller 26 determines whether to allow machine 18 operations (square frame 1408) by feedback and/or the feedback based on receiving at square frame 1402 of for example asking and for example receive, from operator's (, monitor, keyboard etc.).If controller 26 determines while allowing machine operation, the feedback of controller 26 based on for example receiving at square frame 1402 determined machine state whether be associated with safe condition (square frame 1410).Machine 18 can be associated with safe condition, for example, if for example the part that may injure operator of machine 18 (, saw blade) does not move and/or the position in safety.If controller 26 determines that machine 18 is not in a safe condition, controller 26 keeps the position of barrier 10 in being fixed, until realize safe condition (square frame 1412).
If controller 26 determines that machine 18 is in a safe condition, controller 26 determines whether to make barrier 10 to move to open position (square frame 1414) by feedback and/or the feedback based on receiving at square frame 1402 of for example asking and for example receive, from operator user interface (, monitor, keyboard etc.).If barrier 10 will be moved to open position, controller 26 makes curtain 12 move to open position (square frame 1416).
Figure 15 can be used for carrying out the block diagram that the example processor system 1500 of barrier is controlled in the instruction of Figure 14 example shown.As shown in figure 15, processor system 1500 comprises the processor 1502 being incorporated on interconnect bus 1504.Processor 1502 can be any suitable processor, processing unit or microprocessor, and can implement controller 26.Processor system 1500 can be multicomputer system, therefore, can comprise same or similar with processor 1502 and be attached to communicatedly the one or more Attached Processors on interconnect bus 1504.
Processor 1502 shown in Figure 15 is attached to chipset 1506, and this chipset comprises Memory Controller 1508 and I/O (I/O) controller 1510.Chipset 1506 typically provides I/O and memory management functions and can be by being attached to one or more processor access of chipset 1506 or a plurality of general and/or special register of use, timer etc.Memory Controller 1508 is carried out and is made the processor 1502 (or a plurality of processor, if there are a plurality of processors) can access system memory 1512 and the function of mass storage 1514.
System storage 1512 can comprise the type of any expectation in volatibility and/or nonvolatile memory, for example, static RAM (SRAM), dynamic random access memory (DRAM), flash memory, read-only storage (ROM) etc.Mass storage 1514 can comprise any required type in mass storage device, comprises hard disk drive, CD drive, magnetic tape strip unit etc.
I/O controller 1510 is carried out and is made processor 1502 install 1516 and 1518 and the function that communicates of network interface 1520 by I/O bus 1522 and peripheral I/O (I/O).I/O device 1516 and 1518 can be any required type of I/O device, for example, and keyboard, video display or monitor, mouse etc.Network interface 1520 for example can be, makes Ethernet device that processor system 1500 can communicate with all other devices of sensor as described above, asynchronous transfer mode (ATM) device, 802.11 devices, DSL modem, cable modem, cellular modem etc.
Although Memory Controller 1508 and I/O controller 1510 are described to the standalone module in chipset 1506 in Figure 15, but the function of being carried out by these modules can be integrated in single semiconductor circuit, maybe can with two or more independently integrated circuit realize.
Figure 16 and 17 describes the exemplary barrier 1600 that can be used for implementing example disclosed herein.Exemplary barrier 1600 can comprise parts still less, can more easily assemble and/or provide reliable connection, so that barrier 1600 is maintained in its closed position.Exemplary barrier 1600 comprises the second safety device 1602, and it comprises groove part, socket and/or otch 1604 and locking mechanism and/or solenoid 1606.Groove 1604 can comprise first surface or step 1608, second surface 1610 and the 3rd or band tapering surface 1612.
For extension or plunger 1614 and groove 1604 being engaged reliably and therefore barrier 1600 being fixed on to fastening position, first surface 1608 can be substantially perpendicular to second surface 1610.In order to make plunger 1614 easily enter groove 1604, the three surfaces 1612, can be with tapering.In this example, the first wireless portion 36a and otch 1604 are positioned on the contrary on guide plate 34 and/or are positioned in guide plate 34.Yet the first and second safety devices 36 and 1602 can differently be located.For example, the second safety device 1602 can be positioned such that plunger 1614 engages with the end face of guide plate 34 and/or guide 44 when plunger 1614 extends.In these examples, the end face of guide plate 34 and/or guide 44 can be substantially not with tapering.In addition or alternatively, the second safety device 1602 can be oriented to 90 degree with respect to the first safety device 36 about the longitudinal axis of track 32.
In some instances, the second electric part 1606 is the safety switches with protection lock pin from Euchner company.Yet any other device can be used for barrier 1600 to be fixed on fastening position.In addition,, although not shown, exemplary barrier 1600 can comprise additional and/or optional safety device as disclosed herein.
In operation, controller 26 can for example, receive barrier 1600 information in the closed position from the first safety device (, proximity transducer, sensor) 36.When controller 26 determines that barrier 1600 is in the closed position, controller 26 can make plunger 1614 extend in groove 1604 so that barrier 1600 is fixed on to fastening position.Controller 26 can the feedback based on receiving from the first safety device 36 and/or the safety relay that is associated determine that barrier 1600 is in the closed position.Can not make the first connecting portion 1616 of the second electric part 1606 in extended position, and can make the second connecting portion 1618 of the second electric part 1606 in extended position.The information relevant with the first and/or second connecting portion 1616 and/or 1618 can be transported to controller 26.This type of information can be used for determining whether barrier 1600 is fixed on fastening position by controller 26.If controller 26 receives the information of equipment under in a safe condition, controller 26 can make plunger 1614 retract from groove 1604, so that barrier 1600 can move to open position.Can make the first connecting portion 1616 in retracted position, and can not make the second connecting portion 1618 in retracted position.The information relevant with the first and/or second connecting portion 1616 and/or 1618 can be transported to controller 26.This type of information can be used for determining that whether barrier 1600 is in loose position by controller 26.
As disclosed herein, a kind of for controlling the barrier that the exemplary safety curtain assembly touching of equipment is comprised track and comprises socket.Described barrier can move in described track between open position and fastening position.Described open position makes it possible to touch equipment.Described fastening position prevents from touching equipment substantially.This exemplary safety curtain comprises: sensor, and it is when in the closed position that it identifies described barrier; And fastening devices, it comprises and is identified as when in the closed position the part by described female receiver when barrier.Interaction between described part and described socket prevents that barrier from shifting out from fastening position.
In some instances, described barrier comprises and extends in described track the guide body moving with guiding barrier.In some instances, described guide body limits described socket.In some instances, described guide body comprises band tapering surface, describedly with tapering surface, engages with the lead-in surface of described safety curtain assembly, so that described barrier can be with respect at least one aligning in described sensor or described fastening devices.In some instances, the feedback based on receiving from described equipment makes described barrier move from fastening position with the controller of described safety curtain component communication.The feedback of the controller of communicating by letter with described fastening devices in some instances, based on receiving from described sensor extends to described socket described part.In some instances, described barrier comprises the extension that limits described socket, and when described barrier is in the closed position, described extension is received by the groove of described safety curtain assembly.In some instances, described socket comprises hole.In some instances, described barrier comprises flexible curtain.In some instances, described part comprises plunger.
For control to another exemplary safety curtain assembly touching of equipment comprise track and can be in described track at open position and close put between mobile barrier.Described open position makes it possible to touch equipment.Described fastening position prevents from touching equipment substantially.This exemplary safety curtain comprises: sensor, and it is when in the closed position that it identifies described barrier; And fastening devices, it comprises and is identified as the extension engaging with the part of described barrier when in the closed position when barrier.Interaction between described extension and described part prevents that barrier from shifting out from fastening position.
In some instances, the socket of described extension and guide body interacts, to prevent that barrier from shifting out from fastening position.In some instances, described socket comprises that the band tapering that described extension can be directed in described socket is surperficial.In some instances, with the controller of described safety curtain component communication at least the feedback based on receiving from described equipment control described barrier and described fastening devices.In some instances, respond described controller and receive and the described equipment feedback being associated in a safe condition, described controller makes described fastening devices move described part, so that described barrier can move, and described barrier is moved from fastening position.
An illustrative methods for safety curtain assembly is provided, and described safety curtain assembly is for controlling the touching of equipment, and described method comprises to be provided track and the barrier that comprises guide body is provided.Described barrier can move in described track between open position and fastening position.Described open position makes it possible to touch equipment, and described fastening position prevents from touching equipment substantially.Described method comprises: sensor is attached to described track, and it is when in the closed position that described sensor is used for identifying described barrier; With fastening devices is attached to described track.When fastening devices described in described barrier is identified as when in the closed position and described guide body interact, to prevent that described barrier from shifting out from fastening position.In some instances, described method comprises target is attached to described guide body, and it is when in the closed position that described target makes described sensor can identify described barrier.
Another illustrative methods of handling safety system comprises: receive instruction and close barrier; Sense described barrier in the closed position; Carry and the described barrier first signal being associated in the closed position; Based on described barrier, be confirmed as secondary signal in the closed position with receiving.Described secondary signal makes fastening devices that described barrier is fixed on to fastening position.
In some instances, described method also comprises that conveying is fixed on described barrier the 3rd signal that fastening position is associated.In some instances, sense described barrier and sense target and sensor is adjacent in the closed position comprising.
Although described some illustrative methods, equipment herein and manufactured a product, coverage of the present invention is not limited to this.On the contrary, the present invention covers literal upper or under the instruction of equivalent, clearly fall into all methods, the equipment in the scope of claims and manufacture a product.
Claims (20)
1. a safety curtain assembly, for controlling the touching of equipment, comprising:
Track;
Barrier, it comprises socket, and described barrier can move in described track between open position and fastening position, and described open position makes it possible to touch equipment, and described fastening position prevents from touching equipment substantially;
Sensor, it is when in the closed position that it identifies described barrier; With
Fastening devices, it comprises and being identified as when in the closed position by the part of described female receiver when barrier, the interaction between described part and described socket prevents that barrier from shifting out from fastening position.
2. safety curtain assembly according to claim 1, wherein, described barrier comprises and extends to the guide body moving with guiding barrier in described track.
3. safety curtain assembly according to claim 2, wherein, described guide body limits described socket.
4. safety curtain assembly according to claim 2, wherein, described guide body comprises band tapering surface, describedly with tapering surface, engages with the lead-in surface of described safety curtain assembly, so that described barrier can be with respect at least one aligning in described sensor or described fastening devices.
5. safety curtain assembly according to claim 1, wherein, the feedback with the controller of described safety curtain component communication based on receiving from described equipment makes described barrier move from fastening position.
6. safety curtain assembly according to claim 1, wherein, the feedback of the controller of communicating by letter with described fastening devices based on receiving from described sensor extends to described socket described part.
7. safety curtain assembly according to claim 1, wherein, described barrier comprises the extension that limits described socket, when described barrier is in the closed position, described extension is received by the groove of described safety curtain assembly.
8. safety curtain assembly according to claim 1, wherein, described socket comprises hole.
9. safety curtain assembly according to claim 1, wherein, described barrier comprises flexible curtain.
10. safety curtain assembly according to claim 1, wherein, described part comprises plunger.
11. 1 kinds of safety curtain assemblies, for controlling the touching of equipment, comprising:
Track;
Barrier, described barrier can be in described track at open position with close between putting and move, described open position makes it possible to touch equipment, described fastening position prevents from touching equipment substantially;
Sensor, it is when in the closed position that it identifies described barrier; With
Fastening devices, it comprises and is identified as the extension engaging with the part of described barrier when in the closed position when barrier, the interaction between described extension and described part prevents that barrier from shifting out from fastening position.
12. safety curtain assemblies according to claim 11, wherein, the socket of described extension and guide body interacts, to prevent that barrier from shifting out from fastening position.
13. safety curtain assemblies according to claim 12, wherein, described socket comprises makes described extension can be directed into the band tapering surface in described socket.
14. safety curtain assemblies according to claim 12, wherein, with the controller of described safety curtain component communication at least the feedback based on receiving from described equipment control described barrier and described fastening devices.
15. safety curtain assemblies according to claim 14, wherein, responding described controller receives and the described equipment feedback being associated in a safe condition, described controller makes described fastening devices move described part so that described barrier can move, and described barrier is moved from fastening position.
16. 1 kinds of methods that safety curtain assembly is provided, described safety curtain assembly is for controlling the touching of equipment, and described method comprises:
Track is provided;
Barrier is provided, and described barrier comprises guide body, and can in described track, between open position and fastening position, move, and described open position makes it possible to touch equipment, and described fastening position prevents from touching equipment substantially;
Sensor is attached to described track, and it is when in the closed position that described sensor is used for identifying described barrier; With
Fastening devices is attached to described track, when fastening devices described in described barrier is identified as when in the closed position and described guide body interact, to prevent that described barrier from shifting out from fastening position.
17. methods according to claim 16, also comprise target are attached to described guide body, it is when in the closed position that described target makes described sensor can identify described barrier.
The method of 18. 1 kinds of handling safety systems, comprising:
Receive instruction and close barrier;
Sense described barrier in the closed position;
Carry and the described barrier first signal being associated in the closed position; With
Reception is confirmed as secondary signal in the closed position based on described barrier, and described secondary signal makes fastening devices that described barrier is fixed on to fastening position.
19. methods according to claim 18, also comprise carrying being fixed on described barrier the 3rd signal that fastening position is associated.
20. methods according to claim 18, wherein, sense described barrier and sense target and sensor is adjacent in the closed position comprising.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/402,662 | 2012-02-22 | ||
| US13/402,662 US9309717B2 (en) | 2011-11-03 | 2012-02-22 | Powered safety curtains |
| PCT/US2012/063974 WO2013067549A1 (en) | 2011-11-03 | 2012-11-07 | Powered safety curtains |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103958812A true CN103958812A (en) | 2014-07-30 |
| CN103958812B CN103958812B (en) | 2016-09-07 |
Family
ID=51334882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280059043.6A Active CN103958812B (en) | 2012-02-22 | 2012-11-07 | Electric safe curtain |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5884228B2 (en) |
| CN (1) | CN103958812B (en) |
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| CN109236166A (en) * | 2018-10-25 | 2019-01-18 | 中际联合（北京）科技股份有限公司 | A kind of rolling screen door and lifting device |
| CN109432458A (en) * | 2018-11-21 | 2019-03-08 | 苏州佳世达电通有限公司 | Auto cleaning system and method for medical display |
| CN109716010A (en) * | 2016-09-16 | 2019-05-03 | 卡迪斯制造（德国）有限公司 | Security component and warehousing system for warehousing system |
| CN113101766A (en) * | 2021-03-29 | 2021-07-13 | 合肥大黄蜂机械有限公司 | Multi-cavity-matched separating mechanism and dust removal integrated box based on same |
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| JP2016199985A (en) * | 2015-04-14 | 2016-12-01 | 立川ブラインド工業株式会社 | Roll screen |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5884228B2 (en) | 2016-03-15 |
| CN103958812B (en) | 2016-09-07 |
| JP2015503687A (en) | 2015-02-02 |
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