CN101117200A - Crane and control method thereof - Google Patents
Crane and control method thereof Download PDFInfo
- Publication number
- CN101117200A CN101117200A CNA2007100081278A CN200710008127A CN101117200A CN 101117200 A CN101117200 A CN 101117200A CN A2007100081278 A CNA2007100081278 A CN A2007100081278A CN 200710008127 A CN200710008127 A CN 200710008127A CN 101117200 A CN101117200 A CN 101117200A
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- electrical motor
- motor
- main
- control part
- crane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention relates to a crane and a control method of the crane, wherein the crane continues to operate the crane even a part of motor control portion occurs fault. The crane consists of: a plurality of first motors; a plurality of first motor control portion for controlling the output of the first motor by respectively controlling the electric power supplied to plural first motors; a second motor; and a second motor control portion for controlling the output of the first motor by controlling the electric power supplied to second motor, able to control and process an electric power supply from the first motor control portion to the second motor and stop the electric power supply.
Description
Technical field
The present invention relates to pouring ladle hoisting crane and the control method thereof of hoisting crane in particular for the pouring ladle carrying.
Background technology
At present, in ironmaking facility and steel-making facility, will melt molten steel and inject pouring ladle (melting pan), carry each pouring ladle with the pouring ladle hoisting crane.For example, the fusing molten steel is injected into pouring ladle from electric furnace etc., be carried to converter etc. by the pouring ladle hoisting crane after, is poured in the converter etc.
The pouring ladle hoisting crane is carried under the state that pouring ladle is sling with main bont, and the bottom by the pouring ladle of slinging with the service hoisting device tilts pouring ladle, and will melt molten steel in pouring ladle injection converter etc.(for example :) with reference to Patent Document 1
Patent Document 1: the spy of Japan opens flat 11-268881 communique
In existing pouring ladle hoisting crane, main bont is made of two groups of electrical motors and motor control part, carries out slinging and transferring of pouring ladle by two groups of electrical motors and motor control part.
Yet because when having only one group of electrical motor and motor control part, promptly allowing to carry out transferring of pouring ladle can not sling, therefore, for example when a motor control part breaks down, the problem that existence can not make the pouring ladle hoisting crane remain in operation.
In addition, the service hoisting device is made of one group of electrical motor and motor control part, is carried out the inclination of pouring ladle etc. by one group of electrical motor and motor control part.
For this reason, for example when the motor control part of service hoisting device breaks down, the problem that existence can not make the pouring ladle hoisting crane remain in operation.
The service hoisting device is loaded on the whipline, and utilizes one group of electrical motor walking crosswise usefulness and the motor control part be arranged on the whipline to walk crosswise.
Therefore, for example when the motor control part of walking crosswise usefulness breaks down, the service hoisting device can't be walked crosswise, thereby have the problem that the pouring ladle hoisting crane is remained in operation.
Summary of the invention
The present invention proposes for solving above-mentioned problem, and its purpose is to provide the control method of a kind of hoisting crane and hoisting crane, wherein, even the motor control part of a part breaks down, also can proceed the running of hoisting crane.
For achieving the above object, the invention provides with lower device.
The invention provides a kind of hoisting crane, it is characterized in that, possess: a plurality of first electrical motors; A plurality of first motor control part, it controls the output of described first electrical motor respectively by controlling the electric power of supplying with to described a plurality of first electrical motors respectively; Second electrical motor; And second motor control part, its electric power of supplying with to described second electrical motor by control is controlled the output of described second electrical motor, wherein, can control and carry out electric power from one first motor control part to described second electrical motor and supply with and stop electric power and supply with.
According to the present invention,, also can therefore, can continue the running of hoisting crane from one first motor control part to the second electrical motor supply capability even for example second motor control part breaks down.That is since from one first motor control part to the second electrical motor supply capability, therefore,, also can turn round, thereby can proceed the running of hoisting crane even stop supply capability from second motor control part.
In addition, by from one first motor control part to the second electrical motor supply capability, even first electrical motor by one first motor control part supply capability stops or the ability reduction, because it is a plurality of that first electrical motor possesses, so also can hoisting crane be remained in operation by remaining first electrical motor.
Do not have in second motor control part under the situation of fault, stop by of the electric power supply of one first motor control part to second electrical motor, and to the first electrical motor supply capability.Therefore, compare with the situation of the motor control part that only use prepares to the second electrical motor supply capability time, because often use one first motor control part, so when second motor control part breaks down, can be reliably to the second electrical motor supply capability.
Preferably, in foregoing invention, above-mentioned one first motor control part is compared with above-mentioned second motor control part, and the capacitance that can control is big.
According to the present invention,, therefore, when second motor control part breaks down, can supply with the needed electric power of second electrical motor when hoisting crane is remained in operation reliably because one first motor control part is bigger than the second motor control part capacitance.
Preferably, in foregoing invention, have: the main hook that hangs bull ladle; And the auxiliary hook of controlling the attitude of described bull ladle, described main hook is raised and transfers by described a plurality of first electrical motors, and described auxiliary hook is raised and transfers by described second electrical motor.
According to the present invention, even for example second motor control part breaks down, also can proceed the running of second electrical motor, therefore, can continue to make auxiliary hook to promote and transfer.That is, can proceed the running of hoisting crane.
In addition, do not have in second motor control part under the situation of fault, from one first motor control part to the first electrical motor supply capability, therefore, compare with only to the second electrical motor supply capability time, using the situation of the motor control part of preparation, can when second motor control part breaks down, proceed the running of auxiliary hook reliably.
Preferably, in foregoing invention, from described one first motor control part during,, described bull ladle and described main hook are promoted and transfer by other first electrical motor by other first motor control part supply capability to the described second electrical motor supply capability.
According to the present invention, even for example second motor control part breaks down, also can utilize other first electrical motor to carry out the lifting of bull ladle and main hook and transfer, thereby can proceed the running of hoisting crane.
Particularly, when second motor control part breaks down, to the second electrical motor supply capability, and reduce or this first electrical motor stops from the output of first electrical motor of one first motor control part supply capability from one first motor control part.In this case, owing to can utilize other first electrical motor to carry out the lifting of bull ladle and main hook and transfer, and can utilize second electrical motor assist the lifting of hook and to transfer, so can continue to make hoisting crane to turn round.
Preferably, in foregoing invention, possess: main crane, it has described first electrical motor, and is configured to and can moves on prescribed direction; And whipline, it has described second electrical motor, and is configured to and can moves on described prescribed direction, and described main crane utilizes described a plurality of first electrical motor to move, and described whipline utilizes described second electrical motor to move.
According to the present invention, even for example second motor control part breaks down, also can continue the running of second electrical motor, therefore, can proceed moving of whipline.That is, can continue to make the hoisting crane running.
In addition, when second motor control part does not have fault, from one first motor control part to the first electrical motor supply capability, therefore, compare with only to the second electrical motor supply capability time, using the situation of the motor control part of preparation, when second motor control part breaks down, can carry out the running of whipline reliably.
Preferably, in foregoing invention, during to the described second electrical motor supply capability, described main crane is moved by other first electrical motor by other first motor control part supply capability from described one first motor control part.
According to the present invention, even for example second motor control part breaks down, also can utilize other first electrical motor to carry out moving of main crane, thereby can continue to make the hoisting crane running.
Particularly, when second motor control part breaks down, to the second electrical motor supply capability, and reduce or this first electrical motor stops from the output of first electrical motor of one first motor control part supply capability from one first motor control part.In this case, owing to can utilize other first electrical motor to carry out moving of main crane, and can utilize second electrical motor to carry out moving of whipline, therefore, can continue to make the hoisting crane running.
Preferably, in foregoing invention, above-mentioned first motor control part and above-mentioned second motor control part are convertor devices, and above-mentioned first electrical motor and above-mentioned second electrical motor are the inverter motors that is driven by this convertor device.
According to the present invention, by first and second motor control part is made as convertor device, first and second electrical motor is made as inverter motor, can easily control the output of first and second electrical motor.
The invention provides a kind of control method of hoisting crane, it is characterized in that, by controlling the electric power of supplying with from a plurality of first motor control part respectively, control the output of a plurality of first electrical motors, by the electric power of control from the supply of second motor control part, control the output of second electrical motor, when described second motor control part breaks down, from one first motor control part to the described second electrical motor supply capability.
According to the present invention,, also can therefore, can continue to make the hoisting crane running from one first motor control part to the second electrical motor supply capability even second motor control part breaks down.That is since from one first motor control part to the second electrical motor supply capability, therefore,, also can turn round, thereby hoisting crane is remained in operation even stop supply capability from second motor control part.
In addition, by from one first motor control part to the second electrical motor supply capability, even the ability by first electrical motor of one first motor control part supply capability reduces, owing to possess a plurality of first electrical motors, so can utilize remaining first electrical motor that hoisting crane is remained in operation.
Control method according to hoisting crane of the present invention and hoisting crane, have following effect, that is, because can be from one first motor control part to the second electrical motor supply capability, even therefore the motor control part of a part breaks down, also can proceed the running of hoisting crane.
Description of drawings
Fig. 1 is the planar view of structure of the pouring ladle hoisting crane of explanation one embodiment of the invention;
Fig. 2 is the lateral plan of the structure of the girder of instruction diagram 1 and main crane;
Fig. 3 is the skeleton diagram of structure of the pouring ladle hoisting crane of instruction diagram 1;
Fig. 4 is the block diagram of circuit structure of the walking electrical motor of instruction diagram 3;
Fig. 5 is the section-drawing of structure of main crane, whipline and the electric panel room of instruction diagram 1;
Fig. 6 is the block diagram of the circuit structure of the main bont of instruction diagram 1 and service hoisting device;
Fig. 7 is that the master of instruction diagram 1 walks crosswise electrical motor and the auxiliary block diagram of walking crosswise the circuit structure of electrical motor;
Fig. 8 is the partial side view of structure of the whipline of instruction diagram 1.
Label declaration
1 pouring ladle hoisting crane (hoisting crane)
9 main cranes
11 whiplines
41 pouring ladles (bull ladle)
45A, 45B master walk crosswise electrical motor (first electrical motor)
47A, 47B, 47C, 47D master promote electrical motor (first electrical motor)
59A, 59B, 59C master promote convertor device (first motor control part)
59D master promotes convertor device (one first motor control part)
67A master walks crosswise convertor device (first motor control part)
67B master walks crosswise convertor device (one first motor control part)
The 73 auxiliary electrical motors (second electrical motor) of walking crosswise
75 service hoisting electrical motors (second electrical motor)
87 service hoisting convertor devices (second motor control part)
The 95 auxiliary convertor devices (second motor control part) of walking crosswise
The specific embodiment
Below, with reference to Fig. 1～Fig. 8 the pouring ladle hoisting crane of one embodiment of the invention is described.
Fig. 1 is the planar view of structure of the pouring ladle hoisting crane of explanation present embodiment.
As shown in Figure 1, pouring ladle hoisting crane (hoisting crane) 1 possesses: end sleeper 3, girder 5, floor stringer 7, main crane 9, whipline 11.
Fig. 2 is the lateral plan of the structure of the girder of instruction diagram 1 and main crane.
As shown in Figure 2, end sleeper 3 is arranged on a pair of parts that guide rail 17 extends that follow away on the walking crossbeam 15, and it is provided with the running gear 19 of walking on walking guide rail 17.In addition, as shown in Figure 1, on end sleeper 3, girder 5 and floor stringer 7 are installed.
Fig. 3 is the skeleton diagram of the pouring ladle crane structure of instruction diagram 1.
As shown in Figure 2, running gear 19 is configured between walking guide rail 17 and the end sleeper 3, and it makes pouring ladle hoisting crane 1 follow away guide rail 17 walkings.In the present embodiment, illustrate that the both ends at end sleeper 3 possess the embodiment of four running gears 19.
As shown in Figure 3, each running gear 19 possesses walking electrical motor 21A, 21B, walking electrical motor 21C, 21D, walking electrical motor 21E, 21F, walking electrical motor 21G, the 21H that makes pouring ladle hoisting crane 1 follow away guide rail 17 walkings respectively.
In addition, as walking electrical motor 21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H, can use the known electrical motor by convertor device control, there is no particular limitation.
Fig. 4 is the block diagram of circuit structure of the walking electrical motor of instruction diagram 3.
As shown in Figure 4, walking electrical motor 21A, 21B are by walking convertor device 23A supply capability.Equally, walking electrical motor 21C, 21D are by walking convertor device 23C supply capability, and walking electrical motor 21E, 21F are by walking with convertor device 23E supply capability, and walking electrical motor 21G, 21H are by walking with convertor device 23G supply capability.These walkings are supplied with alternating current with convertor device 23A, 23C, 23E, 23G by the outside.
In addition, walking can be by carrying out the control of variable voltage variable frequency with convertor device 23A, 23C, 23E, 23G to supply capability, control walking electrical motor 21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H, can carry out also that constant potential is decided frequency control, variable voltage is decided frequency control, the control of constant potential variable frequency etc., there is no particular limitation.
As shown in Figure 1, girder 5 is to link pair of end sleeper 3 and a pair of beam shape parts of configuration load main crane 9 thereon movably.Girder 5 is with respect to end sleeper 3 quadrature and disposing roughly, and is configured in the outside of floor stringer 7 described later.
(among Fig. 1 with respect to paper the face of side) at the moment disposes the master who extends along girder 5 and walks crosswise guide rail 27 on girder 5, is provided with in the side of girder 5 (face of downside among Fig. 1) to hold the main electric panel room 29 that promotes convertor device 59A etc. described later.
Main walking crosswise loaded main crane 9 on the guide rail 27, guide this main crane 9 with respect to walking guide rail 17 along the direction of quadrature (be designated as later on and walk crosswise direction) roughly.
Fig. 5 is the section-drawing of structure of main crane, whipline and the electric panel room of instruction diagram 1.
As shown in Figure 5, electric panel room 29 is to be configured in the locational case shape parts relative with the side (left surface of Fig. 5) of girder 5.(upper side of Fig. 5) is provided with the fixed part 33 that is fixed on the support 31 that extends from girder 5 on electric panel room 29, and as shown in Figure 2, is provided with the engagement section 35 that engages with the hook (not shown) of hoisting crane.(downside of Fig. 5) possesses the insulation part 37 below covering below electric panel room 29.In addition, below girder 5, also possesses insulation part 37.Electric panel room 29 is installed on the support 31 or pulls down by support being combined with fixed part 33 or breaking away from.
Internal configurations at electric panel room 29 has main convertor device 59A, 59B, 59C, the 59D of promoting; Service hoisting convertor device 87 (with reference to Fig. 6); Main convertor device 67A, the 67B of walking crosswise; Assist and walk crosswise convertor device 95 (with reference to Fig. 7) and walk usefulness convertor device 23A, 23C, 23E, 23G (with reference to Fig. 4).Main promote convertor device 59A, 59B, 59C, 59D etc. electric panel room 29 be installed on the support 31 during, be electrically connected with main electrical motor 47 grades that promote described later.
As shown in Figure 1, floor stringer 7 and girder 5 are to link pair of end sleeper 3 and a pair of beam shape parts of configuration load whipline 11 thereon movably equally.Floor stringer 7 is with respect to end sleeper 3 quadrature and disposing roughly, and is configured in the inboard of girder 5.
On floor stringer 7, be provided with the auxiliary guide rail 39 of walking crosswise.Auxiliary walking crosswise loaded whipline 11 on the guide rail 39, along walking crosswise this whipline 11 of Direction guide.
As shown in Figure 3, main crane 9 is provided with and makes pouring ladle (bull ladle) 41 (with reference to Fig. 5) lifting main bont 43 of transferring and the master that main crane 9 is walked crosswise walk crosswise electrical motor (first electrical motor) 45A, 45B.
Main bont 43 is provided with main electrical motor (first electrical motor) 47A, 47B, 47C, the 47D of promoting; Main reduction part 49A, 49B, the 49C of promoting; Main lifting drum 51A, 51B and suspension head pulley 53 as shown in Figure 5, arm 55, main hook 57.
As shown in Figure 3, mainly promote electrical motor 47A, 47B and main electrical motor 47C, the 47D of promoting is configured in a side the end of main crane 9 and the opposing party's end respectively.The main rotary driving force that promotes electrical motor 47A, 47B, 47C, 47D is delivered to main drum 51A, the 51B of promoting via main lifting reduction part 49A, 49B, 49C.
Select to have and mainly to promote the electrical motor that electrical motors make the output that the pouring ladle 41 that injected the fusing molten steel and main hook 57 promote and transfer by any three as the main electrical motor 47A, 47B, 47C, 47D of promoting.
In addition, can use the known electrical motor by convertor device control as main lifting electrical motor 47A, 47B, 47C, 47D, there is no particular limitation.
Fig. 6 is the block diagram of the circuit structure of the main bont of instruction diagram 1 and service hoisting device.
In addition, as shown in Figure 6, promote convertor device (first motor control part) 59A, 59B, 59C and main convertor device (one the first motor control part) 59D that promotes from the master respectively and supply with alternating current to main lifting electrical motor 47A, 47B, 47C, 47D.Supply with alternating current from the outside to these main lifting convertor device 59A, 59B, 59C, 59D.
Between main convertor device 59D of lifting and main lifting electrical motor 47D, be connected with and promote convertor device 59D supplied with and cut off service hoisting switch 61 from alternating current to service hoisting electrical motor 75 from the master.
The main capacity that promotes convertor device 59A, 59B, 59C, 59D is set at bigger than service hoisting convertor device described later 87.As the main capacity that promotes convertor device 59A, 59B, 59C, 59D and service hoisting convertor device 87, the situation with 500kW and 200kW is an example respectively, but is not limited to this example.
In addition, main lifting convertor device 59A, 59B, 59C, 59D can control main electrical motor 47A, 47B, 47C, the 47D of promoting by supply capability being carried out the variable voltage variable frequency, can also carry out that constant potential is decided frequency control, variable voltage is decided frequency control, the control of constant potential variable frequency etc., there is no particular limitation.
The main reduction part 49A that promotes is configured in main the lifting between electrical motor 47A, the 47B, and as shown in Figure 1, it is that a rotary driving force passes to the main reduction part 49C that promotes that the main rotary driving force that promotes electrical motor 47A, 47B is concentrated.The main reduction part 49B that promotes is configured in main the lifting between electrical motor 47C, the 47D, and it is that a rotary driving force passes to the main reduction part 49C that promotes that the main rotary driving force that promotes electrical motor 47C, 47D is concentrated.
The main reduction part 49C that promotes is configured to and will passes to main drum 51A, the 51B of promoting from main reduction part 49A of lifting and the main rotary driving force that promotes reduction part 49B input.
In addition, promote the reductor that reduction part 49A, 49B, 49C can use known transmission rotary driving force as main, there is no particular limitation.For example, in the present embodiment, also three reduction part combinations can also will be able to be led the rotary driving force that promotes electrical motor 47A, 47B, 47C, 47D with a reduction part and passed to main drum 51A, the 51B of promoting, there is no particular limitation.
As shown in Figure 5, be wound with the main hoist cable 63 that makes main hook 57 promote and transfer on drum 51A, the 51B main the lifting.Emit main hoist cable 63 by driving main drum 51A, the 51B of promoting, and batch main hoist cable 63 by driving to the other direction rotation to a hand of rotation rotation.In addition, the main main hoist cable 63 that promotes drum 51A, 51B emits and batches simultaneously and carry out.
Main hoist cable 63 extends to hook side head pulley 54 from main lifting drum 51A, 51B, is wrapped on hook side head pulley 54 and the suspension head pulley 53, and the end of main hoist cable 63 is fixed on the arm 55.
Hanging head pulley 53 is following cylinder or the columned parts that are configured in main crane 9, rotatably dispose around central axis, and this central axis is with respect to walking crosswise the configuration of direction almost parallel ground.
Hook side head pulley 54 is cylinder or the columned parts that are configured on the arm 55, rotatably dispose around central axis, and this central axis is with respect to walking crosswise the configuration of direction almost parallel ground.
As shown in Figure 5, main hook 57 is the hooks that engage with the axle 41a of pouring ladle 41, respectively possesses one respectively at the two ends of arm 55.As shown in Figure 2, main hook 57 uses pin 65 to be installed on the arm 55, is that centre of gration can rotate with the center shaft of pin 65.
As shown in Figure 3, the master walks crosswise the end that electrical motor 45A is configured in a side of main crane 9, and the master walks crosswise the end that electrical motor 45B is configured in the opposing party.As shown in Figure 2, the master who passes to main crane 9 by the main rotary driving force of walking crosswise electrical motor 45A, 45B generation walks crosswise the 9A of portion.
In addition, can use the known electrical motor of being controlled by convertor device as main electrical motor 45A, the 45B of walking crosswise, there is no particular limitation.
Fig. 7 is that the master of instruction diagram 1 walks crosswise electrical motor and the auxiliary block diagram of walking crosswise the circuit structure of electrical motor.
In addition, as shown in Figure 7, main electrical motor 45A, the 45B of walking crosswise is respectively by main convertor device (first motor control part) 67A, main convertor device (one first motor control part) the 67B supply capability of walking crosswise walked crosswise.Supply with alternating current from the outside to these main convertor device 67A, 67B of walking crosswise.
Main walk crosswise convertor device 67B and main walk crosswise to be connected with between the electrical motor 45B from the main convertor device 67B that walks crosswise supply with and cut off the auxiliary of alternating current and walk crosswise to the auxiliary electrical motor 73 of walking crosswise with switch 69.
The main capacity of walking crosswise convertor device 67A, 67B is set at than described later that auxiliary to walk crosswise convertor device 95 big.As main convertor device 67A, 67B and the auxiliary capacity of walking crosswise convertor device 95 walked crosswise, can be respectively be example with the situation of 45kW and 15kW, but be not limited to this example.
In addition, main convertor device 67A, the 67B of walking crosswise can control main walk crosswise electrical motor 45A, 45B by carry out the variable voltage variable frequency as the control of supply capability, can also carry out that constant potential is decided frequency control, variable voltage is decided frequency control, the control of constant potential variable frequency etc., there is no particular limitation.
Fig. 8 is the partial side view of structure of the whipline of instruction diagram 1.
As shown in Figure 3, whipline 11 is provided with the bevelled service hoisting device 71 of control pouring ladle 41 (with reference to Fig. 5) and the auxiliary electrical motor (second electrical motor) 73 of walking crosswise that whipline 11 is walked crosswise.
As shown in Figure 3, service hoisting electrical motor 75 is arranged on a side's of whipline 11 end.The rotary driving force of service hoisting electrical motor 75 passes to service hoisting drum 79 via service hoisting reduction part 77.In addition, can use known electrical motor by convertor controls as service hoisting electrical motor 75, there is no particular limitation.
In addition, as shown in Figure 6, for service hoisting electrical motor 75 by service hoisting convertor device (second motor control part) 87 supply capabilities.Supply with alternating current from the outside to service hoisting convertor device 87.
In addition, service hoisting convertor device 87 can be controlled service hoisting electrical motor 75 by supply capability is carried out the variable voltage variable frequency, can also carry out that constant potential is decided frequency control, variable voltage is decided frequency control, the control of constant potential variable frequency etc., there is no particular limitation.
Service hoisting reduction part 77 is configured to the rotary driving force of service hoisting electrical motor 75 is passed to service hoisting drum 79.
In addition, can use the reductor of known transmission rotary driving force as service hoisting reduction part 77, there is no particular limitation.
On service hoisting drum 79, be wound with the assisted suspension cable 89 that makes auxiliary hook 85 promote and transfer.Emit assisted suspension cable 89 by driving service hoisting drum 79, and batch assisted suspension cable 89 by driving to another hand of rotation rotation to a hand of rotation rotation.
Crane side auxiliary pulley 81 is service hoisting electrical motor 75 and the cylinder between the service hoisting drum 79 or the columned parts that are configured in whipline 11, rotatably dispose around central axis, and this central axis generally perpendicularly disposes with respect to walking crosswise direction.
Hook side auxiliary pulley 83 is cylinder or the columned parts that are configured on the auxiliary hook base 91 of assisting hook 85, rotatably dispose around central axis, and this central axis generally perpendicularly disposes with respect to walking crosswise direction.
As shown in Figure 5, auxiliary hook 85 is arranged on the hooks on the auxiliary hook base 91, and it hangs on the utensil 41b that verts on the sidewall that is arranged at pouring ladle 41.
As shown in Figure 3, auxiliaryly walk crosswise the end that electrical motor 73 is configured in the opposing party of whipline 11.As shown in Figure 8, be delivered to the auxiliary portion 93 of walking crosswise of whipline 11 by the auxiliary rotary driving force of walking crosswise electrical motor 73 generations.In addition, can use known electrical motor by convertor controls as the auxiliary electrical motor 73 of walking crosswise, there is no particular limitation.
In addition, as shown in Figure 7, walk crosswise electrical motor 73 supply capabilities to assisting from the auxiliary convertor device (second motor control part) 95 of walking crosswise.Supply with alternating current from the outside to the auxiliary convertor device 95 of walking crosswise.
In addition, the auxiliary convertor device 95 of walking crosswise can be controlled the auxiliary electrical motor 73 of walking crosswise by carrying out the variable voltage variable frequency as the control of supply capability, can also carry out that constant potential is decided frequency control, variable voltage is decided frequency control, the control of constant potential variable frequency etc., there is no particular limitation.
Below, the method for carrying pouring ladle 41 in the pouring ladle hoisting crane 1 of said structure is described.
At first, when carrying pouring ladle 41, as shown in Figure 2, make pouring ladle hoisting crane 1 follow away guide rail 17 and move, and main crane 9 is walked crosswise, thereby main hook 57 is moved to the top of pouring ladle 41.
After main crane 9 moves to the top of pouring ladle 41, as shown in Figure 5, transfer main hook 57 and main hook 57 is hung on the axle 41a of pouring ladle 41, and pouring ladle 41 is promoted upward by main bont 43.
When promoting main hook 57, as shown in Figure 6, supply with alternating current by master's lifting convertor device 59A, 59B, 59C, 59D to main lifting electrical motor 47A, 47B, 47C, the 47D of main bont 43, produce rotary driving force by main lifting electrical motor 47A, 47B, 47C, 47D.As shown in Figure 3, rotary driving force passes to main drum 51A, the 51B of promoting via main lifting reduction part 49A, 49B and the main reduction part 49C that promotes.Main drum 51A, the 51B of promoting is driven in rotation by transmitting the rotary driving force that comes.
Be rotated by main drum 51A, the 51B of promoting, main hoist cable 63 is batched by main drum 51A, the 51B of promoting, and the main hook 57 that hangs pouring ladle 41 is promoted upward.
At this moment, lifting is cut off with switch 61, is supplied to main lifting electrical motor 47D fully from the main alternating current that promotes convertor device 59D supply.
In addition, main electrical motor 47A, 47B, 47C, the 47D of promoting be with same output running, mainly promotes convertor device 59A, 59B, 59C, 59D and the main electrical motor 47A, 47B, 47C, 47D of promoting turns round leaving under the state of surplus energy.
After pouring ladle 41 is sling, follow away guide rail 17 walkings by making pouring ladle hoisting crane 1, and main crane 9 is walked crosswise, and it is transported near for example converter etc.
As shown in Figure 4, when making 1 walking of pouring ladle hoisting crane, supply with alternating current with convertor device 23A, 23C, 23E to walking electrical motor 21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H by walking, produce rotary driving force from walking electrical motor 21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H.Rotary driving force is delivered to running gear 19, and pouring ladle hoisting crane 1 follows away guide rail 17 and walks up to making pouring ladle 41 near till the converters etc.
At this moment, walking makes to produce identical rotary driving force from walking electrical motor 21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H with the alternating current that convertor device 23A, 23C, 23E supply with by control.
In addition, in the time of also can being expert at any et out of order among electrical motor 21A, 21B, 21C, 21D, 21E, 21F, 21G, the 21H, by cutting off supply with switch to the alternating current of the electrical motor of fault corresponding to the walking of the walking electrical motor of fault, in this case, pouring ladle hoisting crane 1 utilizes remaining walking electrical motor to follow away guide rail 17 walkings.
In addition, as shown in Figure 7, walk crosswise electrical motor 45A, 45B supply alternating current to the master of main crane 9, produce rotary driving force by main electrical motor 45A, the 45B of walking crosswise from main convertor device 67A, the 67B of walking crosswise.Rotary driving force is delivered to main walks crosswise the 9A of portion, and main crane 9 is walked crosswise up to pouring ladle 41 near till the converters etc. along girder 5.
At this moment, auxiliary walking crosswise with switch 69 is cut off, and all is supplied to the main electrical motor 45B that walks crosswise by the main alternating current of walking crosswise convertor device 67B supply.
Then, utilize service hoisting device 71 that pouring ladle 41 is tilted, the fusing molten steel in the pouring ladle 41 are injected in the converter etc.
When utilizing service hoisting device 71 that pouring ladle 41 is tilted, at first, auxiliary hook 85 is lowered, and whipline 11 is walked crosswise the position on the utensil that verts that makes auxiliary hook 85 hang over pouring ladle 41.As shown in Figure 7, when whipline 11 is walked crosswise, supply with alternating current to the auxiliary electrical motor 73 of walking crosswise of whipline 11, produce rotary driving force by the auxiliary electrical motor 73 of walking crosswise by the auxiliary convertor device 95 of walking crosswise.Rotary driving force is delivered to the auxiliary portion 93 of walking crosswise, and whipline 11 is walked crosswise and till making auxiliary hook 85 hang over position on the utensil that verts of pouring ladle 41 along girder 5.
At this moment, auxiliary walking crosswise with switch 69 is cut off, and all supplies with the auxiliary electrical motor 73 of walking crosswise by the auxiliary alternating current of walking crosswise convertor device 95 supplies.
Hang on the utensil that verts of pouring ladle 41 when auxiliary hook 85 after, then will assist hook 85 to promote, pouring ladle 41 is tilted by service hoisting device 71.
When auxiliary hook 85 is raised, as shown in Figure 6, supply with alternating current to the service hoisting electrical motor 75 of service hoisting device 71, produce rotary driving force by service hoisting electrical motor 75 by service hoisting convertor device 87.Rotary driving force passes to service hoisting drum 79 via service hoisting reductor 77.Service hoisting drum 79 is driven in rotation by the rotary driving force that transmits.
Be rotated by service hoisting drum 79, assisted suspension cable 89 is batched by service hoisting drum 79, and the auxiliary hook 85 that hangs on the utensil that verts is moving upward.Pouring ladle 41 is center rotation with an axle 41a who hangs on the main hook 57, makes in the fusing molten steel injects converters etc. from bevelled pouring ladle 41.
At this, the method for operation as the service hoisting convertor device 87 of the feature of present embodiment or auxiliary pouring ladle hoisting crane 1 when walking crosswise convertor device 95 and breaking down is described.
At first, the situation that service hoisting convertor device 87 is broken down describes.When service hoisting convertor device 87 breaks down, as shown in Figure 6, connect service hoisting with switch 61, supply with alternating current from the main convertor device 59D that promotes to service hoisting electrical motor 75.The service hoisting electrical motor 75 that has been supplied to alternating current produces rotary driving forces, links up with 85 lifting and transfers thereby can assist, and pouring ladle hoisting crane 1 is remained in operation.
On the other hand, do not supply with alternating current, the main output vanishing that promotes electrical motor 47D to the main electrical motor 47D that promotes.The main alternating current that promotes convertor device 59A, 59B, 59C control supply, thus make the main output maximum that promotes electrical motor 47A, 47B, 47C.Main bont 43 can utilize three main lifting electrical motor 47A, 47B, 47C to proceed the lifting of main hook 57 and pouring ladle 41 and the operation of transferring.
In addition, have under two out-of-action states of electrical motor four main liftings among electrical motor 47A, 47B, 47C, the 47D, for example promote under electrical motor 47C, the out-of-action state of 47D main, utilize two remaining main electrical motor 47A, 47B of promoting to carry out the operation of transferring of main hook 57 and pouring ladle 41, and interrupt the operation of pouring ladle hoisting crane 1.
When main hook 57 and pouring ladle 41 were transferred, two main outputs that promote electrical motor 47A, 47B became maximum, and main hook 57 and pouring ladle 41 are lowered safely.In addition, because two main electrical motor 47A, 47B of promoting export deficiency, can't continue the lifting operation of main hook 57 and pouring ladle 41.
Secondly, walk crosswise the situation that convertor device 95 breaks down and describe auxiliary., as shown in Figure 7, connect and walk crosswise when walking crosswise convertor device 95 and breaking down auxiliary, supply with alternating current to the auxiliary electrical motor 73 of walking crosswise by the main convertor device 67B that walks crosswise with switch 69.The auxiliary electrical motor 73 of walking crosswise that has been supplied to alternating current produces rotary driving force, thereby whipline 11 is walked crosswise, and can continue the running of pouring ladle hoisting crane 1.
On the other hand, the main electrical motor 45B that walks crosswise is not supplied with alternating current, make the main output vanishing of walking crosswise electrical motor 45B.Though,, can continue walking crosswise of main crane 9 so the speed of walking crosswise reduces because the output that main crane 9 utilizes a master to walk crosswise electrical motor 45A is walked crosswise.
In addition, service hoisting convertor device 87 or the auxiliary fault of walking crosswise convertor device 95 can be found by the self-diagnosis device that is arranged on the service hoisting device 71, also can find not special the qualification by the regular detection of operator.In addition, preferably service hoisting with switch 61 or walk crosswise with the operation of switch 69 and undertaken by the operator.This is because can make the operator find service hoisting convertor device 87 or the auxiliary fault of walking crosswise convertor device 95, and can take service hoisting convertor device 87 or the auxiliary measure of walking crosswise convertor device 95 places under repair or replacing etc. to fault reliably.
According to said structure,, therefore, can continue lifting and transfer auxiliary hook 85 even, also can continue the running of service hoisting electrical motor 75 because fault has appearred in service hoisting convertor device 87.That is, can continue the running of pouring ladle hoisting crane 1.
Under the situation that service hoisting convertor device 87 does not break down, stop the supply to the alternating current of service hoisting electrical motor 75, and supply with alternating current to the main electrical motor 47D that promotes from main lifting convertor device 59D.Therefore, compare with the situation of only to service hoisting electrical motor 75 supply capabilities the time, using motor control part, because often use main lifting convertor device 59D, so when service hoisting convertor device 87 breaks down, can be reliably to service hoisting electrical motor 75 supply capabilities.
Pouring ladle hoisting crane 1 according to present embodiment, even service hoisting convertor device 87 breaks down, the main electrical motor 47A, 47B, 47C of promoting that also can utilize other carries out the lifting of pouring ladle 41 and main hook 57 and transfers, thereby can continue the running of pouring ladle hoisting crane 1.
Particularly, when service hoisting convertor device 87 breaks down, to service hoisting electrical motor 75 supply capabilities, the main electrical motor 47D that promotes by service hoisting convertor device 87 supply capabilities is stopped by the main convertor device 59D that promotes.In this case, the main electrical motor 47A, 47B, 47C of promoting that can utilize other carries out the lifting of pouring ladle 41 and main hook 57 and transfers, and, can utilize service hoisting electrical motor 75 assist to link up with 85 lifting and transfer, therefore, can continue the running of pouring ladle hoisting crane 1.
Because main lifting convertor device 59D is bigger than the capacitance of service hoisting convertor device 87, so when service hoisting convertor device 87 breaks down, can supply with service hoisting electrical motor 75 needed electric power when continuing the running of crane reliably.
According to the pouring ladle hoisting crane 1 of present embodiment,, therefore, can proceed walking crosswise of whipline 11 even, also can continue the auxiliary running of walking crosswise electrical motor 73 owing to auxiliary walk crosswise convertor device 95 and break down.That is, can proceed the running of pouring ladle hoisting crane 1.
In addition, because auxiliary when walking crosswise convertor device 95 and not breaking down, walk crosswise electrical motor 45B supply alternating current by the main convertor device 67B that walks crosswise to the master, therefore, with only using the situation of the motor control part of preparation to compare when walking crosswise electrical motor 73 supply capabilities to auxiliary, when walking crosswise convertor device 95 and breaking down, also can proceed the running of whipline 11 auxiliary reliably.
According to the pouring ladle hoisting crane 1 of present embodiment,, also can utilize other master to walk crosswise electrical motor 45A main crane 9 is walked crosswise, thereby can proceed the running of pouring ladle hoisting crane 1 even auxiliary walk crosswise convertor device 95 and break down.
Particularly, when walking crosswise convertor device 95 and breaking down, supply with alternating current to the auxiliary electrical motor 73 of walking crosswise, and make and walk crosswise electrical motor 45B by the main master who walks crosswise convertor device 67B supply capability and stop by the main convertor device 67B that walks crosswise auxiliary.In this case, carry out moving of main crane 9 owing to can utilize other master to walk crosswise electrical motor 45A, and, can utilize and auxiliaryly walk crosswise electrical motor 73 and carry out walking crosswise of whipline 11, therefore, can proceed the running of pouring ladle hoisting crane 1.
Because the main convertor device 67B ratio of walking crosswise assists the capacitance of walking crosswise convertor device 95 big, therefore, when walking crosswise convertor device 95 and breaking down, can supply with the auxiliary electrical motor 73 needed electric power of walking crosswise when continuing the running of pouring ladle hoisting crane 1 auxiliary reliably.
Claims (8)
1. a hoisting crane is characterized in that,
Possess: a plurality of first electrical motors;
A plurality of first motor control part, it controls the output of described first electrical motor respectively by controlling the electric power of supplying with to described a plurality of first electrical motors respectively;
Second electrical motor; And
Second motor control part, its electric power of supplying with to described second electrical motor by control is controlled the output of described second electrical motor,
Wherein, can control and carry out electric power from one first motor control part to described second electrical motor and supply with and stop electric power and supply with.
2. hoisting crane as claimed in claim 1 is characterized in that, it is big that described one first motor control part and described second motor control part are compared the capacitance that can control.
3. hoisting crane as claimed in claim 1 or 2 is characterized in that having: the main hook that hangs bull ladle; And the auxiliary hook of controlling the attitude of described bull ladle,
Described main hook is raised and transfers by described a plurality of first electrical motors,
Described auxiliary hook is raised and transfers by described second electrical motor.
4. hoisting crane as claimed in claim 3, it is characterized in that, during to the described second electrical motor supply capability, make described bull ladle and described main hook promote and transfer from described one first motor control part by other first electrical motor by other first motor control part supply capability.
5. as each the described hoisting crane in the claim 1～4, it is characterized in that possessing:
Main crane, it has described first electrical motor, and is configured to and can moves on prescribed direction; And
Whipline, it has described second electrical motor, and is configured to and can moves on described prescribed direction,
Described main crane utilizes described a plurality of first electrical motor to move,
Described whipline utilizes described second electrical motor to move.
6. hoisting crane as claimed in claim 5, it is characterized in that, during to the described second electrical motor supply capability, described main crane is moved from described one first motor control part by other first electrical motor by other first motor control part supply capability.
7. as each the described hoisting crane in the claim 1～6, it is characterized in that described first motor control part and described second motor control part are convertor devices,
Described first electrical motor and second electrical motor are the inverter motors that is driven by this convertor device.
8. the control method of a hoisting crane is characterized in that,
By controlling the electric power of supplying with from a plurality of first motor control part respectively, control the output of a plurality of first electrical motors,
By the electric power that control is supplied with from second motor control part, control the output of second electrical motor,
When described second motor control part breaks down, from one first motor control part to the described second electrical motor supply capability.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006211910A JP2008037539A (en) | 2006-08-03 | 2006-08-03 | Crane and its control method |
| JP211910/06 | 2006-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101117200A true CN101117200A (en) | 2008-02-06 |
Family
ID=39053492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100081278A Pending CN101117200A (en) | 2006-08-03 | 2007-01-26 | Crane and control method thereof |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2008037539A (en) |
| KR (1) | KR100952866B1 (en) |
| CN (1) | CN101117200A (en) |
| TW (1) | TW200808641A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830400A (en) * | 2010-04-27 | 2010-09-15 | 青岛港（集团）有限公司 | Track crane and driving control system thereof |
| CN102350494A (en) * | 2011-10-19 | 2012-02-15 | 上海信孚环保技术工程有限公司 | Method and device for controlling flow rate of poured molten metal |
| CN102452610A (en) * | 2010-10-20 | 2012-05-16 | 徐州重型机械有限公司 | Power supply control system and movable crane |
| CN103430443A (en) * | 2012-02-27 | 2013-12-04 | 三菱重工机械科技株式会社 | Drive device, crane, and control method for drive device |
| CN105984808A (en) * | 2015-01-28 | 2016-10-05 | 西门子工厂自动化工程有限公司 | Speed regulation device of tyred crane and speed regulation method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5861887B2 (en) * | 2012-05-08 | 2016-02-16 | 清水建設株式会社 | Thermal insulation method and thermal insulation structural material |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS465051Y1 (en) * | 1968-06-12 | 1971-02-22 | ||
| JPS60190793U (en) | 1984-05-24 | 1985-12-17 | 石川島播磨重工業株式会社 | Emergency stop device for load lifting equipment such as cranes |
| JPH04210790A (en) * | 1990-12-07 | 1992-07-31 | Mitsubishi Heavy Ind Ltd | Hoist for ladle crane |
| KR19990061977A (en) * | 1997-12-31 | 1999-07-26 | 이해규 | Programmable Logic Controller (PLC) Control System of Carry-in Crane for Waste Incineration Facility |
| JP4317633B2 (en) * | 1999-12-14 | 2009-08-19 | 三菱重工業株式会社 | Overhead traveling crane |
| KR200311765Y1 (en) | 2003-01-27 | 2003-05-09 | 연 태 최 | a crane with two trolley |
| KR101058406B1 (en) * | 2003-12-22 | 2011-08-24 | 재단법인 포항산업과학연구원 | Automatic ceiling crane and its movement control method |
-
2006
- 2006-08-03 JP JP2006211910A patent/JP2008037539A/en active Pending
-
2007
- 2007-01-03 TW TW096100208A patent/TW200808641A/en unknown
- 2007-01-26 CN CNA2007100081278A patent/CN101117200A/en active Pending
- 2007-01-26 KR KR1020070008401A patent/KR100952866B1/en active IP Right Grant
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830400A (en) * | 2010-04-27 | 2010-09-15 | 青岛港（集团）有限公司 | Track crane and driving control system thereof |
| CN101830400B (en) * | 2010-04-27 | 2013-03-27 | 青岛港（集团）有限公司 | Track crane and driving control system thereof |
| CN102452610A (en) * | 2010-10-20 | 2012-05-16 | 徐州重型机械有限公司 | Power supply control system and movable crane |
| CN102350494A (en) * | 2011-10-19 | 2012-02-15 | 上海信孚环保技术工程有限公司 | Method and device for controlling flow rate of poured molten metal |
| CN102350494B (en) * | 2011-10-19 | 2014-01-29 | 上海信孚环保技术工程有限公司 | Method and device for controlling flow rate of poured molten metal |
| CN103430443A (en) * | 2012-02-27 | 2013-12-04 | 三菱重工机械科技株式会社 | Drive device, crane, and control method for drive device |
| CN105984808A (en) * | 2015-01-28 | 2016-10-05 | 西门子工厂自动化工程有限公司 | Speed regulation device of tyred crane and speed regulation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100952866B1 (en) | 2010-04-13 |
| JP2008037539A (en) | 2008-02-21 |
| TW200808641A (en) | 2008-02-16 |
| KR20080012738A (en) | 2008-02-12 |
| TWI311979B (en) | 2009-07-11 |
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