CN101920855B - Method for preventing ship loader wire rope from loosening and control device - Google Patents
Method for preventing ship loader wire rope from loosening and control device Download PDFInfo
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Abstract
The invention provides a method for preventing a ship loader wire rope from loosening. The method comprises the following steps of: lifting a locking hook (802) to an upper limit position; lifting a ship loader arm support (70) to a pitching upper limit; and dropping the locking hook (802) to a lower limit position so that a locking shaft pin (702) on the arm support (70) enters the inner side of a hook head of the locking hook (802), wherein if timing begins when the locking hook (802) drops from the upper limit position and the locking hook (802) does not reach the lower limit position in a predetermined time period, a wire rope reel (18) of the ship loader is in a stop state. The method can stop the wire rope reel in time under the condition that the hooked arm support cannot act and the wire rope reel still releases the wire rope even if the wire rope reel already releases the wire rope so as to avoid large-area loosening of the wire rope and eliminate the overturning hidden danger of the ship loader.
Description
Technical field
The present invention relates to a kind of method and control setup that prevents that the ship loader steel rope is lax.
Background technology
The ship loader luffing mechanism is the important mechanism that ship loader is realized operation, and through the pitching transmission, ship loader can be realized the lifting and the decline of jib, slide tube, accomplishes cabin and ship-loading operation.
As shown in Figure 1, the ship loader luffing mechanism generally comprises pitch drive 10, steel rope 20, A type upper frame 30, upper frame assembly pulley 40, jib assembly pulley 50 and equalizing bar 60 etc.Upper frame assembly pulley 40 is installed in the top of A type upper frame 30, and jib assembly pulley 50 is installed on the jib 70, the bottom-hinged of jib 70 and A type upper frame 30.As shown in Figure 2, pitch drive 10 comprises motor 12, drg 14, reductor 16 and cable drum 18.Drg 14 is used for motor 12 is braked.The steel rope 20 that twines on the cable drum 18 is connected cable drum 18 with jib assembly pulley 50 through upper frame assembly pulley 40 with equalizing bar 60 devices.Motor 12 drives cable drum 18 through reductor 16 and rotates.When cable drum 18 rotates, its coiling or release steel rope 20, it is that the center is lifted or put down with pitching hinge 32 that steel rope 20 drives ship loader jibs 70, thereby accomplishes the pitching action of ship loader.
Through in production operation, observing and the statistics discovery, the lax fault of steel rope takes place and shows two aspects usually in ship loader easily:
The probability that the lax fault of steel rope takes place when 1,70 lockings of ship loader jib are with releasing is maximum;
2, the winter that temperature is low than other temperature higher season et out of order probability big.
Top two kinds of situation why can occur is because jib 70 lockings are to rely on the pitching latch hook mechanism on ship loader top to accomplish.Fig. 3 shows pitching latch hook mechanism, and it is positioned on the A type upper frame 30, between two pulleys of upper frame assembly pulley 40.As shown in Figure 3, pitching latch hook mechanism comprises latch hook 802, latch hook counterweight 804 and fluid pressure drive device 806.Latch hook 802 is through support and A type upper frame 30 pivotal joints, and fluid pressure drive device 806 is used to promote latch hook 802 and rotates up and down.Side at jib 70 has the lock shaft pin 702 that cooperates with the gib head of latch hook 802.Fig. 4 A and Fig. 4 B show lateral plan and the three-dimensional view that pitching latch hook mechanism cooperates with jib 70 respectively.At present, the pitching of jib 70 action still needs manual work to operate.In the locking process of jib 70, when the operator operates at operator's station, need know what state latch hook 802 is in.This can realize through binary pair.Fig. 5 A-5D shows the installation site of latch hook 802 residing each states and some binary pairs.Shown in Fig. 5 A-5D, three locational binary pairs have been used, i.e. the binary pair of the binary pair of latch hook counterweight 804 sides, gib head side and the binary pair on the gib head.The binary pair of latch hook counterweight 804 sides (being called first binary pair 902) is positioned at the below of latch hook counterweight 804 sides, and the binary pair of gib head side (being called second binary pair 904) is positioned at the below of gib head side, and the binary pair of gib head side (being called the 3rd binary pair 906) is positioned on the gib head.
With reference now to Fig. 4 A-4B and Fig. 5 A-5D,, the locking process of jib 70 comprises:
Controller modulated pressure actuating device 806 is raised to upper limit position with the gib head of latch hook 802; At this moment latch hook counterweight side presses down; Trigger first binary pair, 902, the first binary pairs 902 and send signal, and arrive upper limit position through first indicating device indication latch hook 802 to controller;
After operator's operating electrical machines 12 was seen above-mentioned indication, driving steel wire rope reel 18 was moved jib 70 to the pitching upper limit position; After detecting jib 70 arrival pitching upper limit positions, 806 withdrawals of controller modulated pressure actuating device are fallen the gib head of latch hook 802;
Gib head drops to the lower position; This moment, gib head caught on the lock shaft pin 702 on the jib 70; It is inboard that lock shaft pin 702 gets into gib head, and at this moment, the gib head side triggers second binary pair 904; Second binary pair 904 sends signal to second indicating device (can pass through controller), and second indicating device sends the signal that the indication gib head has caught on lock shaft pin 702 after receiving this signal;
The operator is after seeing the indication that second indicating device sends, and operating electrical machines 12 driving steel wire rope reels 18 discharge steel rope 20, and jib 70 beginnings are that fulcrum rotates with pitching hinge 32; Because lock shaft pin 702 is far away from pitching hinge 32, therefore, when jib 70 begins to rotate; Motion between lock shaft pin 702 and the gib head can be regarded as parallel motion; In Fig. 5 D, lock shaft pin 702 is moved to the left, and (binary pair shown in Fig. 5 D adopts mechanical contact formula switch up to triggering the 3rd binary pair 906; The touching bar is installed on lock shaft pin 702 is triggered the 3rd binary pair 906); The 3rd binary pair 906 is triggered the back to the 3rd indicating device (can pass through controller) transmission signal, after the 3rd indicating device receives this signal, sends the indication gib head and cooperates the signal that finishes with lock shaft pin 702;
After the operator saw the indication that the 3rd indicating device sends, operation cable drum 18 stopped to discharge steel rope 20, and jib 70 stops action, and jib 70 locking processes finish.
In theory, if the operator operates in strict accordance with the aforesaid operations step, the possibility that can not exist steel rope 20 to relax.But in practical operation, several kinds of situation below the existence: 1, the operator operates jib 70, does not also make it be in the pitching upper limit position fully, and latch hook 802 just begins to fall; 2, because latch hook 802 is the very short time from upper limit position to beginning to drop to the process that catches on lock shaft pin 702, generally several seconds zero point, therefore, the operator might see that second indicating device just operates jib 70 and rotate before sending indication; 3, under the lower situation of temperature, the property variation that flows of the hydraulic oil in the fluid pressure drive device 806, the speed that causes latch hook 802 to lift and fall is slack-off, and the operator still operates according to the mode in the situation 2.More than several kinds of situation do not catch on lock shaft pin 702 all might cause latch hook 802 gib heads to fall the time fully; Or even the bill that has only gib head catches on lock shaft pin 702; Pivot pin 702 does not have the activity surplus; If this moment, cable drum 18 began to discharge steel rope 20, and jib 70 is caught on and can't move but cable drum 18 is also discharging steel rope 20, and this can cause steel rope 20 lax.In case steel rope 20 large tracts of land are lax, only leaning on the strength of bill is to support the weight of whole jib 70, certainly will cause the whole jib 70 of ship loader to quicken, thereby cause ship loader to topple.
Summary of the invention
For addressing the above problem, the purpose of this invention is to provide a kind of method and the control setup that can avoid in ship loader jib locking process, occurring the lax fault of steel rope.
For realizing above-mentioned purpose, the present invention provides a kind of method that prevents that the ship loader steel rope is lax, and this method comprises: make latch hook be raised to upper limit position; Make the ship loader jib arrive the pitching upper limit; Make said latch hook drop to the lower position, inboard so that the lock shaft pin on the jib gets into the gib head of this latch hook; Wherein, when latch hook picks up counting when upper limit position begins to fall, if latch hook then makes the cable drum of ship loader be in halted state through predetermined amount of time no show lower position also.
The present invention also provides a kind of control setup that is used to prevent that the ship loader steel rope is lax; Wherein, This control setup comprises: controller; This controller is used for when upper limit position begins to fall, picking up counting detecting latch hook, arrives the lower position if in a predetermined amount of time, detect latch hook, and the cable drum of then controlling ship loader is in halted state.
If the gib head of latch hook does not catch on lock shaft pin when falling fully, or even has only the bill of gib head to catch on lock shaft pin, then latch hook can not arrive the lower position.If latch hook begins to fall from upper limit position, pass through also no show lower position of a predetermined amount of time, cable drum is remained static.Discharging steel rope even occur cable drum like this; And jib is caught on and can't move but cable drum is also discharging the situation of steel rope; Also can in time stop cable drum, thereby avoid the steel rope large tracts of land lax, eliminate the hidden danger that ship loader topples.
Description of drawings
Show the specific embodiment of the present invention through accompanying drawing below, be to be understood that these accompanying drawings are exemplary and nonrestrictive, identical Reference numeral is represented same or analogous element, wherein:
Fig. 1 is the scheme drawing of ship loader luffing mechanism;
Fig. 2 is the structured flowchart of ship loader pitch drive;
Fig. 3 is the scheme drawing of pitching latch hook mechanism;
Fig. 4 A and Fig. 4 B show lateral plan and the three-dimensional view that pitching latch hook mechanism cooperates with jib respectively;
Fig. 5 A-D shows the installation site of residing each state of latch hook and some binary pairs;
Fig. 6 is the diagram of circuit that prevents the method that the ship loader steel rope is lax according to one embodiment of the present invention;
Fig. 7 is the diagram of circuit that prevents the method that the ship loader steel rope is lax of another embodiment according to the present invention; And
Fig. 8 is the diagram of circuit that prevents the method that the ship loader steel rope is lax of another embodiment according to the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
Fig. 6 is the diagram of circuit that prevents the method that the ship loader steel rope is lax according to an embodiment of the invention.With reference to figure 6, according to an embodiment of the invention, a kind of method that prevents that the ship loader steel rope is lax is provided, this method comprises following step:
Step 1: make latch hook 802 be raised to upper limit position.
Described in this paper " background technology " part, the lifting and fall and carry out of latch hook 802 through fluid pressure drive device 806.An embodiment of fluid pressure drive device 806 has been shown among Fig. 3, and this fluid pressure drive device 806 has telescopic push rod, when push rod stretches out, promotes latch hook 802 to upper limit position, the position of the latch hook 802 shown in Fig. 5 A.When pusher retracted, latch hook 802 falls to the lower position, the position of the latch hook 802 shown in Fig. 5 B under the effect of himself gravity.
Step 2: make ship loader jib 70 arrive the pitching upper limit.
Because in practical operation; The pitching action situation more complicated of ship loader jib 70; Lean at present the pitching action of controller automatic guidance jib 70 in practical application, to be difficult to obtain satisfied effect, the action that therefore mainly still relies on operator's manual operation jib 70 with stop.As implied above, the rotation (through motor 12 drive) of operator through operation cable drum 18 with stop pitching action that (realizing through drg 14) control jib 70 and stop.In this step 2, the described pitching upper limit is meant the upper maximum position that jib 70 can be arrived by steel rope 20 pull-ups.
Step 3: make said latch hook 802 drop to the lower position, inboard so that the lock shaft pin on the jib 70 702 gets into the gib head of this latch hook 802.
After jib 70 arrives the pitching upper limit, carry out this step 3.The execution of step 3 can be controlled through controller.For example, according to an embodiment of the invention, can use controller modulated pressure actuating device 806.A detecting device can be set to be detected jib 70 and whether arrives the pitching upper limit.Binary pair (being called the 4th binary pair, not shown) for example can be installed on the top-support of A type upper frame 30 to be detected jib 70 and whether arrives the pitching upper limit.If jib 70 has arrived the pitching upper limit; Then the 4th binary pair sends signal to controller, and indication jib 70 has arrived the pitching upper limit, and controller is according to this signal control fluid pressure drive device 806; Make latch hook 802 (for example drop to the lower position; Modulated pressure actuating device 806 its push rods of withdrawal), inboard so that the lock shaft pin on the jib 70 702 gets into the gib head of this latch hook 802, the state shown in Fig. 5 B.In another replaceable embodiment of the present invention, be provided with the first above-mentioned binary pair 902 at the counterweight side-lower of latch hook 802.When latch hook 802 was in upper limit position, first binary pair 902 was triggered, and sent signal to controller, indicated this latch hook 802 to be in upper limit position.Controller only receiving indication jib 70 that above-mentioned the 4th binary pair sends modulated pressure actuating device 806 just when having arrived the signal of the pitching upper limit and indication latch hook 802 that first binary pair 902 sends and being in the signal of upper limit position, makes latch hook 802 drop to the lower position.Lower position described here is meant when the lock shaft pin 702 on the jib 70 gets into the gib head inboard of this latch hook 802, latch hook 802 residing positions.
If do not catch on lock shaft pin 702 when causing latch hook 802 gib heads to fall fully owing to some reasons; Or even the bill that has only gib head catches on lock shaft pin 702; At this moment; If cable drum 18 begins to discharge steel rope 20, and jib 70 is caught on and can't move but cable drum 18 is also discharging steel rope 20, and this can cause steel rope 20 lax.This is breakneck.Therefore; In order to eliminate this potential safety hazard; Method provided by the invention also comprises: when latch hook 802 picks up counting when upper limit position begins to fall, if latch hook 802 then makes the cable drum 18 of ship loader be in halted state through predetermined amount of time no show lower position also.In an embodiment of the invention, when latch hook 802 when upper limit position begins to fall, latch hook counterweight 804 sides are lifted, said first binary pair 902 switches to the state of triggering from the triggering state, controller detects this state variation, and picks up counting.If do not receive the signal that sends after second binary pair 904 is triggered through above-mentioned predetermined amount of time from picking up counting; Then controller is judged and to be thought and the fault that latch hook 802 does not catch on lock shaft pin 702 fully occurs; And one or combination in any in the drg around control motor 12, drg 14 and the cable drum 18 come cable drum 18 is braked, and makes it be in halted state.
The setting of said predetermined amount of time is relevant with factors such as the dropping process of latch hook 802 and operating environments.Generally speaking, latch hook 802 is very short from the time that upper limit position drops to the lower position, normally several seconds zero point.Therefore generally speaking, can predetermined amount of time be set at 0.1 second-1 second, be preferably 0.5 second.
But, (be generally below-15 ℃) under the lower situation of temperature, because the hydraulic oil in the fluid pressure drive device 806 is relatively poor in the lower situation current downflow property of temperature, the speed that latch hook 802 is fallen is slack-off.Therefore, in a replaceable embodiment of the present invention, said predetermined amount of time was set to 3 seconds-10 seconds, was preferably 5 seconds.
If above-mentioned abnormal condition do not occur, promptly latch hook 802 arrives the lower position within the section at the fixed time, and then said method can also comprise:
Step 4: said jib 70 is rotated to the pitching lower limit, further cooperate with gib head at the inboard said lock shaft pin 702 of said gib head thus, accomplish until locking.
After step 3 is performed, after promptly latch hook 802 is in the lower position, execution in step 4.Because the luffing of jib 70 is still operated by the operator, therefore, is necessary to let the operator know that latch hook 802 has been in the lower position.In an embodiment of the invention; Can above-mentioned second binary pair 904 be set at latch hook 802 gib head side-lowers; When latch hook 802 was in the lower position, second binary pair 904 was triggered, and second binary pair 904 to indicating device (alternatively; Pass through controller) send signal, indicating device sends indication after receiving this signal.Said indicating device can for example be an optical unit, for example LED lamp, telltale, and/or acoustic apparatus, for example buzzer phone, loud speaker.The operator can operate jib 70 and begin to rotate to the pitching lower limit after seeing and/or hearing this indication.Pitching lower limit described here is meant jib 70 residing position (for example, approximate parallel with equalizing bar 60) when work.As " background technology " part described in; When said jib 70 begins when the pitching lower limit rotates; Shown in Fig. 5 D; The lock shaft pin 702 of jib 70 is moved to the left with respect to latch hook 802 gib heads, when lock shaft pin 702 contacts (or very approaching) with latch hook 802 gib heads left side, can think to lock and accomplish.
Step 5: after locking is accomplished, said jib 70 is stopped operating.
After locking was accomplished, the operator need operate jib 70 and stop operating, so the operator need know when locking is accomplished.According to an embodiment of the invention, shown in Fig. 5 C, the 3rd binary pair 906 is set on latch hook 802; When locking was accomplished, the 3rd binary pair 906 was triggered, and to the 3rd indicating device (alternatively; Pass through controller) send signal, after the 3rd indicating device receives signal, send indication.Said indicating device can for example be an optical unit, for example LED lamp, telltale, and/or acoustic apparatus, for example buzzer phone, loud speaker.The operator knows the locking completion after seeing this indication, operation jib 70 stops operating.In replaceable embodiment of the present invention, the stopping and can realizing of jib 70 through controller.After the 3rd binary pair 906 is triggered, send signal to controller, the indication locking is accomplished.After controller received this signal, control cable drum 18 stopped operating, and for example can realize stopping of cable drum 18 through the control brake device, thereby jib 70 is stopped.
For the lower environment of adaptive temperature more, said method has been done further improvement.Fig. 7 is the diagram of circuit that prevents the method that the ship loader steel rope is lax according to another implementation of the invention.As shown in Figure 7, in this embodiment, the moment and jib 70 that said jib 70 arrives the pitching upper limit begin between the moment that the pitching lower limit rotates, to have a time difference, time-delay just, and for example this time-delay can be for being not less than 5 seconds.That is to say; Between this time delay; Even if the operator operates jib 70; Jib 70 can not move yet, and can guarantee to begin to rotate before to the pitching lower limit by jib 70 like this latch hook 802 can drop to the lower position under the lower environment of temperature, thereby prevents that latch hook 802 from not catching on or do not catch on lock shaft pin 702 fully.
As stated, in the lower environment of normal temperature and temperature, the method for use has difference slightly.This can artificially be provided with according to the different temperature environment.But,, method of the present invention has been done further improvement in order to tackle the environment of temperature jump.According to the influence of temperature to the flowing power of hydraulic oil in the fluid pressure drive device 806, can find the critical temperature of distinguishing two kinds of working environments, when ambient temperature is higher than this critical temperature, then predetermined amount of time is set by general run of thins; When ambient temperature is lower than this critical temperature, then predetermined amount of time is set by extraordinary circumstances, and added above-mentioned time-delay.Therefore, according to an embodiment of the invention, said method also comprises: measures ambient temperature, the ambient temperature and the critical temperature of measuring are compared, and if ambient temperature is higher than critical temperature, then said predetermined amount of time is set at first and is provided with; If ambient temperature subcritical temperature then is set at second with predetermined amount of time and is provided with.Wherein, first is set to schedule time segment limit at 0.1 second-1 second, is preferably 0.5 second; Second is set to schedule time segment limit at 3 seconds-10 seconds, is preferably 5 seconds.When predetermined amount of time is second when being provided with, the moment and jib 70 that jib 70 arrives the pitching upper limits begin between the moment that the pitching lower limit rotates, to have above-mentioned time-delay.Said critical temperature can for example be set at-15 ℃.
In an embodiment of the invention, said method can also comprise if latch hook 802 begins to fall from upper limit position, passes through also no show lower position of said predetermined amount of time, then sends failure warning.That is to say that controller also sends signal and gives annunciator when control cable drum 18 stops, annunciator gives the alarm after receiving this signal; This annunciator can for example be an optical unit; For example LED lamp, telltale, and/or acoustic apparatus, for example buzzer phone, loud speaker.
In addition, can be only just lift latch hook 802 in limited time on soon near pitching at jib 70.Fig. 8 is the diagram of circuit that prevents the method that the ship loader steel rope is lax of another embodiment according to the present invention.As shown in Figure 8, in this embodiment, this method also is included in and whether detects said jib 70 before the execution in step 1 near the said pitching upper limit, and detect said jib 70 near pitching on execution in step 1 just in limited time.Said jib 70 is less than or equal to 5 degree near the angle that the said pitching upper limit can be defined as between the jib 70 and the pitching upper limit.That is to say that be less than or equal to 5 when spending when detecting above-mentioned angle, controller modulated pressure actuating device 806 drives latch hooks 802 and is raised to upper limit position.The detection of angle can be through carrying out such as but not limited to angular transducer or near switch.
The present invention also provides expectation to be used to realize the device of said method.According to an embodiment of the invention; A kind of control setup that is used to prevent that the ship loader steel rope is lax is provided; Wherein, this control setup comprises: controller, this controller are used for when upper limit position begins to fall, picking up counting detecting latch hook 802; If in a predetermined amount of time, do not detect latch hook 802 arrival lower positions, the cable drum 18 of then controlling ship loader is in halted state.
Controller can receive the indication latch hook 802 that above-mentioned first binary pair 902 sends and arrive the signal of upper limit positions, and can detect first binary pair 902 from the triggering state to the variation that does not trigger state, when detecting this variation, controller can pick up counting.If in above-mentioned predetermined amount of time, do not receive the signal of the indication latch hook 802 arrival lower positions of above-mentioned second binary pair 904 transmissions, think that then latch hook 802 does not arrive the lower position.At this moment; Controller through the drg around the above-mentioned motor of control 12, drg 14 and the cable drum 18 (for example; Four callipers) one or combination in any in come cable drum 18 is braked, and are about to its locking, so that it is in halted state.Here said lower position is meant when the lock shaft pin 702 on the aforesaid jib 70 gets into the gib head inboard of this latch hook 802, latch hook 802 residing positions.Said controller can be to the controller described in the description of method, also can be other separate controller.
Therefore, according to another implementation of the invention, except comprising above-mentioned controller, said control setup can also comprise:
First binary pair 902 is used to detect said latch hook 802 and whether arrives said upper limit position, and when latch hook 802 arrived upper limit position, first binary pair 902 was triggered, and sends the signal that indication latch hook 802 arrives upper limit position to said controller;
Second binary pair 904 is used to detect said latch hook 802 and whether arrives said lower position, and when latch hook 802 arrival lower positions, this second binary pair 904 is triggered, and sends the signal of indication latch hook 802 arrival lower positions to controller.
Wherein, said controller detects latch hook 802 and begins to fall from upper limit position and detect said first binary pair 902 through this controller and switch to not the triggering state from the triggering state and realize; And
When controller receives the signal of the indication latch hook 802 arrival lower positions that said second binary pair 904 sends, then think said latch hook 802 arrival lower positions.
As stated, if at the fixed time in the section, controller does not receive the above-mentioned signal that second binary pair 904 sends, and explains that then latch hook 802 does not catch on or does not catch on lock shaft pin 702 fully, need give the operator with this signalling trouble.Therefore the replaceable embodiment according to the present invention; Said control setup can also comprise annunciator; Also to this annunciator signal that gives the alarm, annunciator is used for after receiving this alarm signal, giving the alarm when the cable drum 18 of controller control ship loader is in halted state.This annunciator can for example be an optical unit, for example LED lamp, telltale, and/or acoustic apparatus, for example buzzer phone, loud speaker.
As to described in the description of method, (be generally below-15 ℃) under the lower situation of temperature, because the hydraulic oil in the fluid pressure drive device 806 is relatively poor in the lower situation current downflow property of temperature, the speed that latch hook 802 is fallen is slack-off.Therefore the well variation of adaptive temperature of control setup that provides of expectation.To this point, according to replaceable embodiment of the present invention, said control setup also comprises temperature sensor, and this temperature sensor is used for the testing environment temperature, and detected ambient temperature is sent to said controller with the mode of signal;
Said controller also is used for detected ambient temperature and critical temperature are compared; If this ambient temperature is higher than this critical temperature; Then said predetermined amount of time is set at first predetermined amount of time; If this ambient temperature is lower than this critical temperature, then said predetermined amount of time is set at second predetermined amount of time, first predetermined amount of time is less than second predetermined amount of time.
Wherein, said first predetermined amount of time is applicable to the environment that temperature is higher, and its scope can be preferably 0.5 second for 0.1 second-1 second; Said second predetermined amount of time is applicable to the environment that temperature is lower, and its scope can be preferably 5 seconds for 3 seconds-10 seconds.
That is to say that this control setup can be according to the setting of variation of ambient temperature automatic compensation to predetermined amount of time, so that the operation of control setup has better compatible with environment.
For under the lower environment of temperature, guarantee latch hook 802 do not receive the hydraulic oil of fluid pressure drive device 806 flow the property difference influence and drop to the lower position fully; Can begin between the pitching lower limit, to set a time difference, i.e. time-delay in the jib 70 arrival pitching upper limits and jib 70.According to this design, said control setup has been done further improvement.According to replaceable embodiment of the present invention, said control setup can also comprise the 4th binary pair, prescribes a time limit when said jib 70 arrives in the pitching, and the 4th binary pair is triggered, and sends the signal that indication jib 70 arrives the pitching upper limits to controller; And
When said predetermined amount of time is set at second predetermined amount of time; And when said controller receives the signal of the said indication jib 70 arrival pitching upper limits; This controller picks up counting when receiving this signal, and the motor 12 that control is used for driving steel wire rope reel 18 before timing reaches the schedule time does not receive any drive signal.
The said schedule time can be set at and be not less than 5 seconds; Promptly from jib 70 arrive the pitching upper limits begin after in 5 seconds, controller makes the drive signal receiving end of motor 12 be in disarmed state, in this schedule time; Even the operator thinks operating electrical machines 12 work, motor 12 can not start yet.This can realize in several ways.For example the drive signal receiving end at motor 12 is connected in series a relay; The common state of the switch of relay is a closure state; When controller receives indication jib 70 that the 4th binary pair sends when arriving the signal of the pitching upper limits, controller makes the switch of relay be in off-state (giving the electromagnetic circuit power supply of relay), after a time period; For example 5 seconds, the switch of relay was returned to closure state.The implementation that other can also be arranged certainly; For example in the electromagnetic circuit of above-mentioned relay, be connected in series an inductance; To constitute delay circuit; Controller can give electromagnetic circuit with pulse voltage (or square-wave voltage) when above-mentioned indication jib 70 arrives the signal of the pitching upper limits receiving, because the delayed-action of inductance, the switch of relay can postpone a period of time from off-state and return closure state.Inductance coefficient through regulating inductance just can be regulated the above-mentioned schedule time.
In addition, only be desirably in jib 70 soon near just lifting latch hook 802 in the pitching in limited time.Therefore according to replaceable embodiment of the present invention, said control setup can also comprise:
Near switch or angular transducer; Whether the angle that is used to detect between the said jib 70 and the pitching upper limit is less than or equal to 5 degree; And be less than or equal to 5 when spending detecting angle between the said jib 70 and the pitching upper limit, send the signal of indication jib 70 near the pitching upper limit to said controller;
Controller also is used to receive this signal, and the said fluid pressure drive device 806 driving latch hooks 802 of control are raised to upper limit position after receiving this signal.
Provided by the inventionly be used to prevent that the lax control setup of ship loader steel rope can be used for carrying out said method, therefore can effectively prevent the fault that in jib 70 locking processes contingent steel rope 20 is lax, thereby eliminate safe hidden trouble.
Above-described binary pair can include but not limited to the mechanical type contact switch, near switch, for example eddy current type near switch, capacitive approach switch, super sonic near switch, microwave near switch, magnetic approach switch, Hall-type near switch, pyroelectricity formula near switch or photo-electric near switch.
Said controller can include but not limited to micro controller system, microprocessor, PLC circuit, DSP circuit, special IC (ASIC), field programmable gate array (FPGA) circuit.
The program that said controller is used can be through using written program such as assembly language, PLC programming language, C language, carrying out above-mentioned method.
Though described the present invention with reference to accompanying drawing with specific embodiment, should be appreciated that these embodiments are schematic but not determinate.Under the situation that does not deviate from essence of the present invention, can carry out various suitable combinations, modification and distortion to above embodiment.Be to be understood that these combinations, revise and be out of shape and also belong to the scope that claim of the present invention requires protection.
Claims (12)
1. method that prevents that the ship loader steel rope is lax, this method comprises:
Make latch hook (802) be raised to upper limit position;
Make ship loader jib (70) arrive the pitching upper limit;
Make said latch hook (802) drop to the lower position, inboard so that the lock shaft pin (702) on the jib (70) gets into the gib head of this latch hook (802);
Wherein, when latch hook (802) picks up counting when upper limit position begins to fall, if latch hook (802) then makes the cable drum (18) of ship loader be in halted state through predetermined amount of time no show lower position also.
2. method according to claim 1, wherein, this method also comprises:
If said latch hook (802) arrives the lower position in said predetermined amount of time; Said jib (70) is rotated to the pitching lower limit, and the time difference that the moment of wherein said jib (70) the arrival pitching upper limit and jib (70) began between the moment that the pitching lower limit rotates is not less than 5 seconds.
3. method according to claim 1, wherein, this method also comprises:
The testing environment temperature;
The ambient temperature and the critical temperature that detect are compared;
If this ambient temperature is higher than this critical temperature; Then said predetermined amount of time is set at first predetermined amount of time; If this ambient temperature is lower than this critical temperature, then said predetermined amount of time is set at second predetermined amount of time, first predetermined amount of time is less than second predetermined amount of time.
4. method according to claim 3, wherein, the scope of said first predetermined amount of time is 0.1 second-1 second; The scope of said second predetermined amount of time is 3 seconds-10 seconds.
5. method according to claim 3, wherein, if said predetermined amount of time is set at second predetermined amount of time, and said latch hook (802) begins to fall from upper limit position, in said predetermined amount of time, arrives the lower position, and then this method also comprises:
Said jib (70) is rotated to the pitching lower limit, and the time difference that the moment of wherein said jib (70) the arrival pitching upper limit and jib (70) began between the moment that the pitching lower limit rotates is not less than 5 seconds.
6. according to any described method among the claim 1-5, wherein, this method also comprises if latch hook (802) passes through also no show lower position of said predetermined amount of time, then sends failure warning.
7. according to any described method among the claim 1-5; Wherein, This method also is included in to be carried out the angle that detects before the step make latch hook (802) be raised to upper limit position between said jib (70) and the pitching upper limit and whether is less than or equal to 5 and spends; If the angle that detects between the said jib (70) and the pitching upper limit is less than or equal to 5 degree, then carry out making latch hook (802) be raised to the step of upper limit position.
8. control setup that is used to prevent that the ship loader steel rope is lax is characterized in that this control setup comprises:
Controller; This controller is used for when upper limit position begins to fall, picking up counting detecting latch hook (802); Do not arrive the lower position if in a predetermined amount of time, detect latch hook (802), the cable drum (18) of then controlling ship loader is in halted state;
First binary pair (902); Be used to detect said latch hook (802) and whether arrive said upper limit position; When latch hook (802) arrived upper limit position, first binary pair (902) was triggered, and sent the signal that indication latch hook (802) arrives upper limit position to said controller;
Second binary pair (904); Be used to detect said latch hook (802) and whether arrive said lower position; When latch hook (802) arrived the lower position, this second binary pair (904) was triggered, and sent the signal that indication latch hook (802) arrives the lower position to controller;
Said controller detects latch hook (802) to begin to fall from upper limit position and detects said first binary pair (902) through this controller and switch to not the triggering state from the triggering state and realize;
When said controller receives indication latch hook (802) that said second binary pair (904) sends when arriving the signal of lower position, think that then said latch hook (802) arrives the lower position.
9. control setup according to claim 8, wherein, this control setup also comprises temperature sensor, this temperature sensor is used for the testing environment temperature, and detected ambient temperature is sent to said controller with the mode of signal;
Said controller also is used for detected ambient temperature and critical temperature are compared; If this ambient temperature is higher than this critical temperature; Then said predetermined amount of time is set at first predetermined amount of time; If this ambient temperature is lower than this critical temperature, then said predetermined amount of time is set at second predetermined amount of time, first predetermined amount of time is less than second predetermined amount of time.
10. control setup according to claim 9, wherein, the scope of said first predetermined amount of time is 0.1 second-1 second; The scope of said second predetermined amount of time is 3 seconds-10 seconds.
11. control setup according to claim 9; Wherein, this control setup also comprises the 4th binary pair, prescribes a time limit when said jib (70) arrives in the pitching; The 4th binary pair is triggered, and sends the signal that indication jib (70) arrives the pitching upper limit to controller; And
When said predetermined amount of time is set at second predetermined amount of time; And when said controller receives the signal of said indication jib (70) the arrival pitching upper limit; This controller picks up counting when receiving this signal, and the motor (12) that control is used for driving steel wire rope reel (18) before timing reaches the schedule time does not receive any drive signal.
12. control setup according to claim 11, wherein, the said schedule time is not less than 5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102480556A CN101920855B (en) | 2010-08-06 | 2010-08-06 | Method for preventing ship loader wire rope from loosening and control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102480556A CN101920855B (en) | 2010-08-06 | 2010-08-06 | Method for preventing ship loader wire rope from loosening and control device |
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| Publication Number | Publication Date |
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| CN101920855A CN101920855A (en) | 2010-12-22 |
| CN101920855B true CN101920855B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN111821626A (en) * | 2020-07-31 | 2020-10-27 | 湖南三一中型起重机械有限公司 | Steel wire rope looseness detection device and fire engine |
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|---|---|---|---|---|
| CN2761562Y (en) * | 2004-12-27 | 2006-03-01 | 谌志祥 | Controller for stroke limit |
| CN201358090Y (en) * | 2009-03-05 | 2009-12-09 | 北京起重运输机械设计研究院 | Fixed packed material ship loader |
| CN201439484U (en) * | 2009-07-23 | 2010-04-21 | 大连港集团有限公司 | Pitching safety control device for main arm of shore bridge |
| CN201458387U (en) * | 2009-07-28 | 2010-05-12 | 中国神华能源股份有限公司 | Pitching mechanism of ship loader |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3443747B2 (en) * | 1994-02-09 | 2003-09-08 | 石川島播磨重工業株式会社 | Quantitative scraping method of continuous unloader |
| KR101065841B1 (en) * | 2004-12-24 | 2011-09-19 | 주식회사 포스코 | Apparatus of fixing wire rope in unloader |
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- 2010-08-06 CN CN2010102480556A patent/CN101920855B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761562Y (en) * | 2004-12-27 | 2006-03-01 | 谌志祥 | Controller for stroke limit |
| CN201358090Y (en) * | 2009-03-05 | 2009-12-09 | 北京起重运输机械设计研究院 | Fixed packed material ship loader |
| CN201439484U (en) * | 2009-07-23 | 2010-04-21 | 大连港集团有限公司 | Pitching safety control device for main arm of shore bridge |
| CN201458387U (en) * | 2009-07-28 | 2010-05-12 | 中国神华能源股份有限公司 | Pitching mechanism of ship loader |
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| Title |
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| JP特开平7-223735A 1995.08.22 |
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| CN101920855A (en) | 2010-12-22 |
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