CN102826471B - Crane as well as operation safety control system and method thereof - Google Patents
Crane as well as operation safety control system and method thereof Download PDFInfo
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- CN102826471B CN102826471B CN201210355248.0A CN201210355248A CN102826471B CN 102826471 B CN102826471 B CN 102826471B CN 201210355248 A CN201210355248 A CN 201210355248A CN 102826471 B CN102826471 B CN 102826471B
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Abstract
The invention discloses an operation safety control system of a crane; the control system comprises a power supply, a get-off control unit and a get-on control unit; the power supply is connected with a power supply input end of an engine electronic control unit by a first power supply circuit, and is connected with a flameout signal input end and a get-on controller of the engine electronic control unit by a second power supply circuit; and the get-on control unit comprises a scram switch and a scram control device. The scram control device controls the on-off of the first and the second power supply circuits according to a scram gear or a restore gear on which the scram switch is located. Therefore, when an emergency situation happens in the get-on operation process of the crane, an operator can cut off the power supply of the engine ECU (electronic control unit) by using the scram control device, to enable the engine to be flamed-out, thereby effectively and completely cutting off the power system in time, and ensuring the safety of people, apparatuses and surrounding operation environments. On the above basis, the invention further provides an operation safety control method of the crane and the crane having the above control system.
Description
Technical field
The present invention relates to overweight machine, be specifically related to hoisting crane and job safety control system thereof, method.
Background technology
Hoisting crane generally can be divided into part and the operation part two parts of getting on the bus of travelling of getting off by function.Shift in the getting off place that part is mainly used in realizing hoisting crane of travelling, and the operation part of getting on the bus is mainly used in realizing lifting, location and the placement of weight.For car hosit, can design get off operator's compartment and two operator'ies compartment of operator's compartment of getting on the bus, be respectively used to operation part and the operation part of getting on the bus of travelling of getting off.
As everyone knows, the crane products of medium and small tonnage, travel part and the operation part of getting on the bus of getting off is to share a set of power system (driving engine).Driving engine is controlled its work by electronic control unit ECU, ECU constantly detects present engine working parameter, travel condition of vehicle parameter by the each sensor being arranged on driving engine, computing by analysis,, and compare with pre-stored relevant parameter, carry out the startup, flame-out and move the multiple parameters such as required air/fuel ratio of control engine, guarantee its safety, environmental protection, operation reliably.The power of driving engine is divided into two-way after change speed gear box output: a road passes to the transmission system of chassis partly that travels of getting off, another road is used for driving hydraulic oil pump to provide power for the operation part of getting on the bus, the get on the bus process of homework department's sub-power of connection is called power taking, realizes by being arranged on the power taking switching device of getting on the bus in operator's compartment.
Due to working condition complexity, the work under bad environment of hoisting crane, therefore, the probability of et out of order is higher, once and have an accident, the consequence causing is comparatively serious again, the operation partial fault of especially getting on the bus.In order to ensure job safety; hoisting crane is except being respectively arranged with control engine flame-out get off key switch and the key switch of getting on the bus in operator's compartment at the operator's compartment and getting on the bus of getting off; in operator's compartment, be also provided with emergency stop switch getting on the bus; be in an emergency in operation process when getting on the bus; or when people causes hoisting crane to depart from predetermined work track or pattern for maloperation; operator can pass through emergency stop switch getting on the bus in operator's compartment; cut off power system in time, effectively, up hill and dale, avoid producing even more serious consequence.
Refer to Fig. 1, this figure is existing crane job safety control system schematic diagram.
As shown in Figure 1, in the time that hoisting crane is normally worked, get on the bus key switch S2 in starting gear, power taking detector switch S3 closure, the coil of power taking relay K 6 obtains electric, the closing of contact of power taking relay K 6, now, the outgoing current of storage battery G1 is through battery isolator control S0, power safety F3 gets on the bus, the contact of power taking relay K 2, key switch S2 gets on the bus, the coil of supply relay K4 and chassis energising relay K 5 of making to get on the bus obtains electric, the corresponding contacts closure of two relay K 4 and K5, be respectively the coil power supply of get on the bus consumer and chassis power supply relay K1, the coil of chassis power supply relay K1 obtain electric after, the closing of contact, the power input terminal of Engine ECU and storage battery G1 are connected, ECU obtains electric work.If there is unforeseen circumstances, in the operator's compartment of getting on the bus of hoisting crane, can adopt two kinds of control engines of mode flame-out, to guarantee job safety:
(1) flame-out by the key switch S2 control engine of getting on the bus.
The key switch S2 that will get on the bus forwards to and closes, now, the outgoing current of storage battery G1 is as flame-out signal, through battery isolator control S0, the power safety F3 that gets on the bus, power taking relay K 6 contacts, key switch S2 gets on the bus, be delivered to the flame-out signal input terminal of Engine ECU, Engine ECU receives that sending instruction after flame-out signal makes engine off; Meanwhile, flame-out signal also can be transported to vehicle controller A2, realizes the safety control of the operation part of getting on the bus.
(2) flame-out by emergency stop switch S4 control engine.
Once get on the bus, key switch S2 breaks down, and when uncontrollable engine off, can also use emergency stop switch S4.In the time that emergency stop switch S4 presses, the outgoing current of storage battery G1 is as flame-out signal, through battery isolator control S0, the power safety F3 that gets on the bus, power taking relay K 2 contacts, emergency stop switch S4, be delivered to the flame-out signal input terminal of Engine ECU, realize engine off and the safety control to the operation part of getting on the bus.Which has got around the key switch S2 that gets on the bus, and is a kind of additional mandatory safety measure.
But; because the needed flame-out signal of Engine ECU is that high level is effective; therefore; if have any one element fault or line broken circuit between the flame-out terminal from storage battery G1 to Engine ECU; capital causes Engine ECU cannot receive flame-out signal; control engine is flame-out immediately, and poor reliability when urgent flame-out operation, does not meet the control requirement of emergency state hard stop.
In view of this, urgently be optimized design for the job safety control system of existing hoisting crane, to guarantee in the time that emergency situation occurs, break down from storage battery to any element or circuit between Engine ECU connection terminal, can not affect the flame-out control to driving engine yet.
Summary of the invention
For above-mentioned defect, the technical matters that the present invention solves is, a kind of job safety control system of hoisting crane is provided, can avoids affecting the flame-out control of driving engine due to element or line fault by Optimized System Design, thereby can cut off in time, effectively, up hill and dale power system.On this basis, the present invention also provides a kind of job safety control method of hoisting crane and has had the hoisting crane of this job safety control system.
The job safety control system of hoisting crane provided by the invention, comprises power supply, get off control unit and the control unit of getting on the bus; Wherein, described power supply is connected with the power input of engine electronic control unit by the first supply line, is connected with flame-out signal input part and the upper vehicle controller of engine electronic control unit by the second supply line; What the described control unit of getting off sent according to user get off starts or out code switches on or off described the first supply line; What the described control unit of getting on the bus sent according to user get on the bus starts or out code switches on or off described the first supply line, switches on or off described the second supply line simultaneously; The described control unit of getting on the bus comprises emergency stop switch and anxious fixed-position stop control apparatus, and described anxious fixed-position stop control apparatus stops or reset gear according to the residing urgency of described emergency stop switch, controls the break-make of described first, second supply line.
Preferably, the described control unit of getting off comprises get off key switch and lower truck control device, the described key switch of getting off starts or out code for getting off described in sending, described lower truck control device according to described in get off and start or out code, switch on or off described the first supply line.
Preferably, the described control unit of getting on the bus also comprises get on the bus key switch and upper truck control device, the described key switch of getting on the bus starts or out code for getting on the bus described in sending, described upper truck control device according to described in get on the bus and start or out code, switch on or off described the second supply line.
Preferably, described lower truck control device comprises the first relay, described in the coil of the first relay described in key switch control of getting off obtain electric or dead electricity; And be configured to: described in get off key switch in starting when gear, the coil of described the first relay obtains electric, the closing of contact is connected described the first supply line; The described key switch of getting off in the time closing gear, the coil losing electricity of described the first relay, contact disconnect cut off described the first supply line; Described anxious fixed-position stop control apparatus comprises the second relay, and the coil of the second relay obtains electric or dead electricity described in described emergency stop switch control; And be configured to: described emergency stop switch is in the time of reset gear, and the coil of described the second relay obtains electric, the closing of contact connect described in the circuit of getting off between key switch and the coil of described the first relay; Described emergency stop switch is in anxious while stopping gear, the coil losing electricity of described the second relay, and contact disconnects the circuit of getting off between key switch and the coil of described the first relay described in cutting off.
Preferably, the described control unit of getting on the bus also comprises the flameout control device of getting on the bus, the described flameout control device of getting on the bus stops or reset gear according to the residing urgency of described emergency stop switch, control the break-make of described the second supply line, and be configured to: described emergency stop switch in urgency while stopping gear, connect described the second supply line; Described emergency stop switch in reset gear time, cut off described the second supply line.
Preferably, described in the flameout control device of getting on the bus comprise the 3rd relay, described in described emergency stop switch control the 3rd relay electric or dead electricity; And be configured to: described emergency stop switch is in the time suddenly stopping gear, and the coil of described the 3rd relay obtains electric, and the closing of contact is connected described the second supply line; Described emergency stop switch in the time of reset gear, the coil losing electricity of described the 3rd relay, contact disconnect cut off described the second supply line.
Preferably, described emergency stop switch is specially duplex mechanical switch, controls the coil of described the second relay and the coil of described the 3rd relay obtains electric or dead electricity simultaneously.
Preferably, the control unit of getting on the bus described in also comprises the 4th relay and the 5th relay; Wherein, get on the bus described in a termination of the coil of described the 4th relay startup gear, the other end ground connection of key switch; Moving contact connects other consumers of getting on the bus; Described in one termination of the coil of described the 5th relay, get on the bus startup gear, the other end ground connection of key switch; Get off described in moving contact the connects mouth of key switch, break back contact connect simultaneously described the 4th relay break back contact and described in the get on the bus input end of key switch.
Preferably, described emergency stop switch is specially rotor switch, button switch or audio-switch.
The job safety control method of hoisting crane provided by the invention, comprises the following steps:
According to the residing startup of the key switch of getting off or close gear, switch on or off the first supply line into engine electronic control unit power supply;
According to the residing startup of the key switch of getting on the bus or close gear, switch on or off described the first supply line, disconnect simultaneously or connect the second supply line for upper vehicle controller power supply;
Stop or reset gear according to the residing urgency of emergency stop switch, control the break-make of described first, second supply line, when described emergency stop switch in urgency while stopping gear, disconnect described the first supply line, and connect described the second supply line; When described emergency stop switch in reset gear time, connect described the first supply line, and cut off described the second supply line.
Preferably, switch on or off described the first supply line by the first relay, when the described key switch of getting off is in the time starting gear, the coil of described the first relay obtains electric, and the closing of contact is connected described the first supply line; When the described key switch of getting off is in the time closing gear, the coil losing electricity of described the first relay, contact disconnects and cuts off described the first supply line; Switch on or off described the second supply line by the second relay, when described emergency stop switch is during in reset gear, the coil of described the second relay obtains electric, the closing of contact, the circuit of getting off between key switch and the coil of described the first relay described in connection; When described emergency stop switch is in anxious while stopping gear, the coil losing electricity of described the second relay, contact disconnects, the circuit of getting off between key switch and the coil of described the first relay described in cut-out.
Preferably, can also switch on or off described the second supply line by the flameout control device of getting on the bus, the described flameout control device of getting on the bus comprises the 3rd relay, when described emergency stop switch is in the time suddenly stopping gear, the coil of described the 3rd relay obtains electric, the closing of contact, connects described the second supply line; When described emergency stop switch is during in reset gear, the coil losing electricity of described the 3rd relay, contact disconnects, and cuts off described the second supply line.
Preferably, described emergency stop switch is duplex mechanical switch, when described emergency stop switch is in the anxious gear ground that stops, cuts off described the first supply line, connects described the second supply line simultaneously; When described emergency stop switch is in reset gear ground, connect described the first supply line, cut off described the second supply line simultaneously.
Hoisting crane provided by the invention, comprise lower chassis and be arranged on get on the bus apparatus for work and the driving engine on described lower chassis, described driving engine, according to the normal operation of the output signal of described engine electronic control unit or flame-out, also comprises foregoing control system.
The job safety control system of hoisting crane provided by the invention; power supply is connected with the power input of engine electronic control unit by the first supply line; be connected with flame-out signal input part and the upper vehicle controller of engine electronic control unit by the second supply line; the control unit of getting on the bus comprises emergency stop switch and anxious fixed-position stop control apparatus; this urgency fixed-position stop control apparatus stops or reset gear according to the residing urgency of emergency stop switch, controls the break-make of first, second supply line.So arrange, in the time being in an emergency in crane operation process, operator can cut off by being arranged on the anxious fixed-position stop control apparatus of getting on the bus in operator's compartment the power supply of Engine ECU, make engine off, in time, cut off effectively, up hill and dale power system, thereby the continuation that can evade potential safety hazard completely expands, and then support personnel, equipment and the safety of operating environment around.
In preferred version of the present invention, its control unit of getting on the bus also comprises the flameout control device of getting on the bus, and this flameout control device of getting on the bus stops or reset gear according to the residing urgency of emergency stop switch, controls the break-make of the second supply line, when emergency stop switch in urgency while stopping gear, connect the second supply line; When emergency stop switch in reset gear time, disconnect described the second supply line.Like this, upper vehicle controller can also be controlled by emergency stop switch simultaneously, to control other consumer of getting on the bus, the safety of other consumer of getting on the bus can be further guaranteed in the time that emergency situation occurs.
In another preferred version of the present invention, its control unit of getting on the bus also comprises the 4th relay and the 5th relay, and coil one end of the 4th relay connects the startup gear of car key switch, other end ground connection; Moving contact is got on the bus for connection, and other use equipment; Coil one end of the 5th relay connects the startup gear of car key switch, other end ground connection; Moving contact connects the mouth of key switch of getting off, break back contact connect simultaneously described the 4th relay break back contact and described in the get on the bus input end of key switch.So arrange, even if get off under the location status of key switch in closing, also can connect by the key switch of getting on the bus the power supply of Engine ECU, start the engine, further improves the security and stability of complete machine operation.
Accompanying drawing explanation
Fig. 1 is the job safety control system schematic diagram of existing hoisting crane;
Fig. 2 is the schematic diagram of the crane job safety control system described in the specific embodiment.
In Fig. 2:
Storage battery G1, power supply always insures F1, chassis key switch insurance F2, power safety F3 gets on the bus, battery isolator control S0, key switch S1 gets off, key switch S2 gets on the bus, power taking detector switch S3, emergency stop switch S4, the first relay (chassis power supply relay) K1, the second relay (suddenly stopping control relay) K2, the 3rd relay (the flame-out relay of getting on the bus) K3, the 4th relay (supply relay of getting on the bus) K4, the 5th relay (chassis energising relay) K5, power taking relay K 6, engine electronic control unit (ECU) A1, upper vehicle controller A2.
The specific embodiment
Core of the present invention is to provide a kind of job safety control system of hoisting crane, when emergency situation meet accident when getting on the bus in operation process, operating personal can be cut to by being arranged on the emergency stop switch of getting on the bus in operator's compartment the supply line of engine electronic control unit ECU power supply, Engine ECU is quit work, engine off, thus in time, effectively realize job safety control.
Particularly, the job safety control system of this hoisting crane mainly comprise power supply, get off control unit and the control unit of getting on the bus; Power supply is connected with the power input of Engine ECU by the first supply line, is connected with flame-out signal input part and the upper vehicle controller of Engine ECU by the second supply line; What the control unit of getting off sent according to user get off starts or out code switches on or off described the first supply line; What the control unit of getting on the bus sent according to user get on the bus starts or out code switches on or off described the first supply line, switches on or off described the second supply line simultaneously; The control unit of getting on the bus comprises emergency stop switch and anxious fixed-position stop control apparatus, and described anxious fixed-position stop control apparatus stops or reset gear according to the residing urgency of described emergency stop switch, controls the break-make of described the first supply line and the second supply line.
Based on this, when something unexpected happened, user can realize the flame-out control to driving engine by three kinds of modes:
(1) by the power supply of the control unit cut-out Engine ECU of getting off, Engine ECU is quit work, engine off;
(2) send engine off control signal by the control unit of getting on the bus to Engine ECU, Engine ECU is flame-out according to engine off control signal control engine;
(3) by the power supply of anxious halt switch cut-out Engine ECU, Engine ECU is quit work, engine off.
Below in conjunction with explanation accompanying drawing, this specific embodiment is described in further detail, so that those skilled in the art understand better.
Refer to Fig. 2, Fig. 2 is the job safety control system schematic diagram of the hoisting crane described in the specific embodiment, mainly comprises storage battery G1(power supply), get off control unit and the control unit of getting on the bus.The control unit of getting off comprises get off key switch S1 and lower truck control device, and lower truck control device comprises the first relay (chassis power supply relay) K1; The control unit of getting on the bus comprises the key switch S2 that gets on the bus, upper truck control device, emergency stop switch S4 and anxious fixed-position stop control apparatus, anxious fixed-position stop control apparatus comprises the second relay (suddenly stopping control relay) K2, upper truck control device comprises the 4th relay (supply relay of getting on the bus) K4 and the 5th relay (chassis energising relay) K5, power supply can be offered to other consumer power supply of getting on the bus by the supply relay K4 that gets on the bus, can realize by the independent start the engine of the key switch of getting on the bus by the chassis relay K 5 of switching on.
The positive pole of storage battery G1 connects battery isolator control S0, after battery isolator control S0, be divided into three tunnels, other consumer power supplies that the first via is used to Engine ECU and gets off, the second tunnel is used to the control unit power supply of getting off, and Third Road is used to the control unit power supply of getting on the bus.
Wherein, the first via is always insured F1 through contact, the power supply of the first relay K 1 and is connected to the power input of engine electronic control unit (ECU) A1, thereby the electric current of storage battery G1 output is offered to Engine ECU, and connects other consumers of getting off simultaneously.Here will be called the first supply line (specifically referring to from the mouth of battery isolator control S0 to the part the power input terminal of Engine ECU) for the circuit of driving engine power supply.
Wherein, the second tunnel is connected with the key switch S1 that gets off through chassis key switch insurance F2, the key switch S1 that gets off is connected with the coil of the first relay K 1 through the contact of the second relay K 2, the other end ground connection (negative earth of storage battery G1) of the coil of the first relay K 1.
Wherein, Third Road is through getting on the bus after power safety F3, then connects successively coil and the power taking detector switch S3 of power taking relay K 6, and is finally connected on ground wire; Simultaneously, Third Road after the power safety F3 that gets on the bus again the contact through power taking relay K 6 be connected with the key switch S2 that gets on the bus, the key switch S2 that gets on the bus has startup and closes two gears, two gears are connected with the coil of the supply relay K4 that gets on the bus and the coil of chassis energising relay K 5 respectively, the other end ground connection of the coil of the coil of the supply relay K4 that gets on the bus and chassis energising relay K 5.The moving contact of chassis energising relay K 5 connects the mouth of the key switch S1 that gets off, the break back contact of chassis energising relay K 5 connects the input end of the break back contact of the supply relay K4 that gets on the bus and the key switch S2 that gets on the bus simultaneously, and the moving contact of the supply relay K4 that gets on the bus connects other consumers of getting on the bus.Get on the bus engine off control signal input end and the upper vehicle controller that gear mouth connects ECU simultaneously of closing of key switch S2, this circuit is called the second supply line.Emergency stop switch S4 can be normally closed switch, the input end of key switch S2 of getting on the bus also connects the input end of emergency stop switch S4 and other consumers of getting on the bus simultaneously, the mouth of emergency stop switch S4 connects the coil input end of the second relay K 2, the coil output ground connection of the second relay K 2.
As shown in Figure 2, the control system that this specific embodiment provides can start by get off key switch S1 and the key switch S2 that gets on the bus respectively, specific as follows:
(1) start by the key switch S1 that gets off.
The key switch S1 that will get off is placed in startup gear, the coil of the first relay K 1 obtains electric, the closing of contact, connect the first supply line, the electric current path of flowing through is: the contact-power supply of storage battery G1-battery isolator control S0-the first relay K 1 always insures F1-Engine ECU, Engine ECU obtains electric, engine work; Meanwhile, other consumers of getting off also can normally be worked.
(2) the key switch S1 that gets off is in the closed position, starts separately by the key switch S2 that gets on the bus.
Due to emergency stop switch, S4 is normally closed, therefore, the coil of the coil of the second relay K 2 and the 3rd relay K 3 obtains electric, the closing of contact of the second relay K 2, the contact of the 3rd relay K 3 disconnects, power taking detector switch S3 detects power taking control signal closure, the coil of power taking relay K 6 obtains electric, the closing of contact, now, the key switch S2 that will get on the bus is placed in startup gear, the coil of the coil of supply relay K4 and the chassis energising relay K 5 of getting on the bus obtains electric, corresponding contact is all closed, the electric current of storage battery G1 is through battery isolator control S0, power safety F3 gets on the bus, the contact of power taking relay K 6, the contact of chassis energising relay K 5, the contact of the second relay K 2, make the coil of the first relay K 1 obtain electric, the closing of contact, connect the first supply line, Engine ECU is obtained electric, engine work, meanwhile, other consumers of getting off also can normally be worked.In addition, electric current, from the contact output of power taking relay K 6, is also powered to other consumers of getting on the bus through the contact of the supply relay K4 that gets on the bus.
If there is unintended emergency situation, can take following three kinds of modes to realize engine off.
(1) the key switch S1 that will get off is placed in and closes gear, now, the coil losing electricity of the first relay K 1, contact disconnects, thereby has cut off the first supply line, so ECU dead electricity makes engine off.As can be seen here, user can control and gets off the residing startup of key switch S1 or close gear, switches on or off the first supply line by lower truck control device (the first relay K 1), makes ECU obtain electric or dead electricity, thus the normal work of control engine or flame-out.
(2) will get on the bus key switch S2 in closing gear, now, flame-out signal input part and upper vehicle controller that the electric current of storage battery G1 output outputs to Engine ECU through the contact of the power safety F3 that gets on the bus, power taking relay K 2, the key switch S2 that gets on the bus, make engine off so Engine ECU is sent control signal; Meanwhile, upper vehicle controller output control signal make to get on the bus other consumer is carried out corresponding action, to guarantee job safety.
(3) disconnect emergency stop switch S4, the coil losing electricity of the second relay K 2, contact disconnects, circuit so get off between key switch S1 and the coil of the first relay K 1 cuts off, the coil losing electricity of the first relay K 1, the contact of the first relay K 1 disconnects, and the first supply line is cut off, make Engine ECU lose power supply and quit work, engine off.
As can be seen here, the job safety control system of hoisting crane provided by the invention, even have any one element fault or line broken circuit between the flame-out terminal from storage battery G1 to Engine ECU, still can be in time, effectively, control engine is flame-out up hill and dale, has greatly improved the reliability of job safety.
In order further to improve reliability and the operability of above-mentioned control system, in control unit, increase the flameout control device of getting on the bus getting on the bus, the flameout control device of getting on the bus stops or reset gear according to the residing urgency of emergency stop switch, control the break-make of the second supply line, and be configured to: emergency stop switch in urgency while stopping gear, connect the second supply line; Emergency stop switch in reset gear time, cut off the second supply line.
This flameout control device of getting on the bus can comprise the 3rd relay (the flame-out relay of getting on the bus) K3, and the 3rd relay K 3 is normally closed relay, and other relays are normally opened relay.The coil two ends one termination emergency stop switch S4 of the 3rd relay K 3, other end ground connection, the coil of controlling the 3rd relay K 3 by emergency stop switch S4 obtains electric or dead electricity.When emergency stop switch S4 is in the time suddenly stopping gear, the coil of the 3rd relay K 6 obtains electric, the closing of contact, the electric current of storage battery G1 is connected to the second supply line through the contact of battery isolator control S0, the power safety F3 that gets on the bus, power taking relay K 6, the contact of the 3rd relay K 3, produces engine off control signal; When emergency stop switch S4 is during in reset gear, the coil losing electricity of the 3rd relay K 3, contact disconnects.
Emergency stop switch is specially duplex mechanical switch, controls the coil of the second relay and the coil of the 3rd relay obtains electric or dead electricity simultaneously.
Except aforementioned job safety control system, the present invention also provides a kind of job safety control method of hoisting crane, comprises the following steps:
According to the residing startup of the key switch of getting off or close gear, switch on or off the first supply line into engine electronic control unit power supply;
According to the residing startup of the key switch of getting on the bus or close gear, switch on or off described the first supply line, switch on or off the second supply line into upper vehicle controller power supply simultaneously;
Stop or reset gear according to the residing urgency of emergency stop switch, control the break-make of described first, second supply line, when described emergency stop switch in urgency while stopping gear, cut off described the first supply line, and connect described the second supply line; When described emergency stop switch in reset gear time, connect described the first supply line, and cut off described the second supply line.
In general, the present invention mainly has advantages of following outstanding:
(1) when emergency situation occurs, to any element or line fault between Engine ECU, all can not affect the power operation to Engine ECU from storage battery G1, make to control the flame-out higher reliability that has.
(2) during due to Engine ECU dead electricity, driving engine can shut down immediately, compares to the technical scheme of the flame-out signal of Engine ECU input, and the flame-out promptness of Engine ECU control is higher, thereby guarantees that in emergency circumstances flame-out operation completes fast.
(3) emergency stop switch S4 is normally closed switch, after flame-out by emergency stop switch S4 control engine, emergency stop switch S4 is in off-state, only after confirming that potential safety hazard is got rid of completely, by hand reset emergency stop switch S4, could be vehicle energising by chassis key switch S1 or the key switch S2 that gets on the bus, can avoid maloperation to press other arbitrary switches and circuit for generating fault.
On this basis, the present invention also provides a kind of hoisting crane with above-mentioned control system, and the driving engine of hoisting crane is according to the normal operation of the output signal of described ECU or flame-out.It should be noted that, the lower chassis of this hoisting crane, the apolegamy that is arranged on get on the bus apparatus for work and driving engine on this lower chassis all can adopt existing techniques in realizing, therefore repeat no more herein.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. the job safety control system of hoisting crane, is characterized in that, comprising:
Power supply, is connected with the power input of engine electronic control unit by the first supply line, is connected with flame-out signal input part and the upper vehicle controller of engine electronic control unit by the second supply line;
The control unit of getting off, getting off of sending according to user starts or out code switches on or off described the first supply line;
The control unit of getting on the bus, getting on the bus of sending according to user starts or out code switches on or off described the first supply line, switches on or off described the second supply line simultaneously; The described control unit of getting on the bus comprises emergency stop switch and anxious fixed-position stop control apparatus, and described anxious fixed-position stop control apparatus stops or reset gear according to the residing urgency of described emergency stop switch, controls the break-make of described first, second supply line.
2. the job safety control system of hoisting crane according to claim 1, is characterized in that,
The described control unit of getting off comprises get off key switch and lower truck control device, the described key switch of getting off starts or out code for getting off described in sending, described in described lower truck control device basis, get off and start or out code, switch on or off described the first supply line.
3. the job safety control system of hoisting crane according to claim 1, is characterized in that,
The described control unit of getting on the bus also comprises get on the bus key switch and upper truck control device, the described key switch of getting on the bus starts or out code for getting on the bus described in sending, described in described upper truck control device basis, get on the bus and start or out code, switch on or off described the second supply line.
4. the job safety control system of hoisting crane according to claim 2, is characterized in that,
Described lower truck control device comprises the first relay, described in the coil of the first relay described in key switch control of getting off obtain electric or dead electricity; And be configured to: described in get off key switch in starting when gear, the coil of described the first relay obtains electric, the closing of contact is connected described the first supply line; The described key switch of getting off in the time closing gear, the coil losing electricity of described the first relay, contact disconnect cut off described the first supply line;
Described anxious fixed-position stop control apparatus comprises the second relay, and the coil of the second relay obtains electric or dead electricity described in described emergency stop switch control; And be configured to: described emergency stop switch is in the time of reset gear, and the coil of described the second relay obtains electric, the closing of contact connect described in the circuit of getting off between key switch and the coil of described the first relay; Described emergency stop switch is in anxious while stopping gear, the coil losing electricity of described the second relay, and contact disconnects the circuit of getting off between key switch and the coil of described the first relay described in cutting off.
5. the job safety control system of hoisting crane according to claim 4, is characterized in that,
The described control unit of getting on the bus also comprises the flameout control device of getting on the bus, the described flameout control device of getting on the bus stops or reset gear according to the residing urgency of described emergency stop switch, control the break-make of described the second supply line, and be configured to: described emergency stop switch in urgency while stopping gear, connect described the second supply line; Described emergency stop switch in reset gear time, cut off described the second supply line.
6. the job safety control system of hoisting crane according to claim 5, is characterized in that,
The described flameout control device of getting on the bus comprises the 3rd relay, described in described emergency stop switch control the 3rd relay electric or dead electricity; And be configured to: described emergency stop switch is in the time suddenly stopping gear, and the coil of described the 3rd relay obtains electric, and the closing of contact is connected described the second supply line; Described emergency stop switch in the time of reset gear, the coil losing electricity of described the 3rd relay, contact disconnect cut off described the second supply line.
7. the job safety control system of hoisting crane according to claim 6, is characterized in that,
Described emergency stop switch is specially duplex mechanical switch, controls the coil of described the second relay and the coil of described the 3rd relay obtains electric or dead electricity simultaneously.
8. the job safety control system of hoisting crane according to claim 3, is characterized in that, described in the control unit of getting on the bus also comprise:
The 4th relay, get on the bus described in a termination of its coil startup gear, the other end ground connection of key switch; Moving contact connects other consumers of getting on the bus;
The 5th relay, get on the bus described in a termination of its coil startup gear, the other end ground connection of key switch; Get off described in moving contact the connects mouth of key switch, break back contact connect simultaneously described the 4th relay break back contact and described in the get on the bus input end of key switch.
9. the job safety control system of hoisting crane according to claim 1, is characterized in that, described emergency stop switch is specially rotor switch, button switch or audio-switch.
10. the job safety control method of hoisting crane, is characterized in that, comprises the following steps:
According to the residing startup of the key switch of getting off or close gear, switch on or off the first supply line into engine electronic control unit power supply;
According to the residing startup of the key switch of getting on the bus or close gear, switch on or off described the first supply line, disconnect simultaneously or connect the second supply line for upper vehicle controller power supply;
Stop or reset gear according to the residing urgency of emergency stop switch, control the break-make of described first, second supply line, when described emergency stop switch in urgency while stopping gear, disconnect described the first supply line, and connect described the second supply line; When described emergency stop switch in reset gear time, connect described the first supply line, and cut off described the second supply line.
The job safety control method of 11. hoisting cranes according to claim 10, is characterized in that,
Switch on or off described the first supply line by the first relay, when the described key switch of getting off is in the time starting gear, the coil of described the first relay obtains electric, and the closing of contact is connected described the first supply line; When the described key switch of getting off is in the time closing gear, the coil losing electricity of described the first relay, contact disconnects and cuts off described the first supply line;
Switch on or off described the second supply line by the second relay, when described emergency stop switch is during in reset gear, the coil of described the second relay obtains electric, the closing of contact, the circuit of getting off between key switch and the coil of described the first relay described in connection; When described emergency stop switch is in anxious while stopping gear, the coil losing electricity of described the second relay, contact disconnects, the circuit of getting off between key switch and the coil of described the first relay described in cut-out.
The job safety control method of 12. hoisting cranes according to claim 10, is characterized in that,
Can also switch on or off described the second supply line by the flameout control device of getting on the bus, the described flameout control device of getting on the bus comprises the 3rd relay, and when described emergency stop switch is in the time suddenly stopping gear, the coil of described the 3rd relay obtains electric, the closing of contact, connects described the second supply line; When described emergency stop switch is during in reset gear, the coil losing electricity of described the 3rd relay, contact disconnects, and cuts off described the second supply line.
The job safety control method of 13. hoisting cranes according to claim 10, it is characterized in that, described emergency stop switch is duplex mechanical switch, when described emergency stop switch is in the anxious gear ground that stops, cut off described the first supply line, connect described the second supply line simultaneously; When described emergency stop switch is in reset gear ground, connect described the first supply line, cut off described the second supply line simultaneously.
14. hoisting cranes, comprise driving engine, it is characterized in that, also comprise the control system as described in claim 1 to 9 any one, and described driving engine is according to the normal operation of the output signal of described engine electronic control unit or flame-out.
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| CN103061903A (en) * | 2012-12-25 | 2013-04-24 | 三一重机有限公司 | System and method for emergent shutdown |
| CN103171455B (en) * | 2013-02-26 | 2015-08-05 | 中联重科股份有限公司 | Engineering machine starting system and engineering machine |
| CN103345171A (en) * | 2013-06-24 | 2013-10-09 | 天津山河装备开发有限公司 | Safety control system of engineering machinery engine |
| CN103613016B (en) * | 2013-11-29 | 2015-05-20 | 中联重科股份有限公司 | Tower crane and machine locking control method, device and system thereof |
| CN104895683B (en) * | 2015-06-26 | 2018-05-04 | 潍柴动力股份有限公司 | Autocrane and its cylinder deactivation of engine control method, device |
| CN108516466A (en) * | 2018-06-14 | 2018-09-11 | 徐州重型机械有限公司 | Crane control method and crane |
| CN109597341B (en) * | 2018-12-27 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Safety starting control device and method for auxiliary function of engineering machinery |
| CN114856847B (en) * | 2022-04-20 | 2023-07-18 | 中联重科股份有限公司 | Control method for engineering equipment engine, processor and engineering equipment |
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| JP4475767B2 (en) * | 2000-08-03 | 2010-06-09 | 株式会社小松製作所 | Work vehicle |
| JP2003146587A (en) * | 2001-11-15 | 2003-05-21 | Hitachi Constr Mach Co Ltd | Control device for winch |
| JP2004277142A (en) * | 2003-03-18 | 2004-10-07 | Ishikawajima Transport Machinery Co Ltd | Method and apparatus for controlling horizontal moving speed of suspended load of jib crane |
| US7426423B2 (en) * | 2003-05-30 | 2008-09-16 | Liebherr-Werk Nenzing—GmbH | Crane or excavator for handling a cable-suspended load provided with optimised motion guidance |
| JP2005263470A (en) * | 2004-03-22 | 2005-09-29 | Hitachi Constr Mach Co Ltd | Winch speed control device, and winch speed control method |
| CN2705438Y (en) * | 2004-05-17 | 2005-06-22 | 梁坚 | Central driven crane safety protector |
| CN202193555U (en) * | 2011-07-22 | 2012-04-18 | 河南起重机器有限公司 | Multi-operation starting control circuit on crane |
| CN202864769U (en) * | 2012-09-21 | 2013-04-10 | 徐州重型机械有限公司 | Crane and operation safety control system thereof |
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