CN101718968B - Electric control system for controlling engineering equipment and engineering equipment - Google Patents
Electric control system for controlling engineering equipment and engineering equipment Download PDFInfo
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- CN101718968B CN101718968B CN 200910211711 CN200910211711A CN101718968B CN 101718968 B CN101718968 B CN 101718968B CN 200910211711 CN200910211711 CN 200910211711 CN 200910211711 A CN200910211711 A CN 200910211711A CN 101718968 B CN101718968 B CN 101718968B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
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Abstract
The invention discloses an electric control system and engineering equipment equipped with the electric control system. The disclosed electric control system comprises a main circuit, a control circuit, a control device, a first contact point and a second contact point, wherein the main circuit supplies electricity to an executive electrical apparatus, the control circuit controls the main circuit, and the first contact point and the second contact point are respectively connected in the main circuit and the control circuit so as to respectively control the on-off of the main circuit and the control circuit; the first contact point and the second contact point keep in the same status under the control of the control device. By utilizing the electric control system provided by the invention, when both the first contact point and the second contact point keep closed, the engineering equipment can normally operate; when the engineering equipment is overhauled, the first contact point and the second contact point can keep disconnected, the main circuit and the control circuit simultaneously keep in the disconnected state, and the engineering equipment can not be started even though misoperation occurs, thereby avoiding the starting of the engineering equipment due to incorrect operation and improving the security of engineering equipment overhaul.
Description
Technical field
The present invention relates to a kind of control technology, particularly a kind of electric control system for control engineering equipment, also relate to a kind of engineering equipment with this electric control system, and this project equipment comprises fixing equipment and engineering machinery movably.
Background technology
Current, when safeguarding for some heavy construction equipment or overhauling, all must enter engineering equipment inner or enter the perform region of this project equipment; Particularly in construction machinery industry, the maintenance of the equipment such as many stirrers, Vib., swing roller, lifting windlass all must enter this equipment availability zone and carry out.In the engineering equipment operational process, engineering equipment inside or perform region become the hazardous location, if enter this hazardous location, the running meeting of engineering equipment forms serious threat to the safety of maintainer and repair apparatus.For the personal safety that guarantees the maintainer and the safety of repair apparatus; in maintenance process; take suitable maintenance safeguard measure, to avoid engineering equipment because maloperation starts running, to guarantee to be positioned at the repair apparatus of hazardous location and maintainer's safety.
At present, the maintenance safeguard measure is generally to control realization by the electric control system to engineering equipment.Electric control system comprises main circuit and control circuit, and main circuit connects power supply and motor (or other carry out electrical equipment), for the motor of engineering equipment provides electric energy, makes engineering equipment keep running; The function of control circuit is the change by itself state, realizes the conversion to main circuit closed and disconnected state, and then realizes the control to motorrun state.The combination of control circuit and main circuit can the circuit by little electric current and low-voltage realizes the control to large electric current or high voltage circuit, with when guaranteeing reliable control engineering equipment, improves the security of control engineering equipment.Current, the maintenance safeguard measure of all kinds of heavy construction equipment mainly contains two schemes:
A kind of safeguard measure of overhauling is between the hazardous location of engineering equipment and safety zone, the safety inspection door to be set, and when engineering equipment is overhauled, need to enter by the safety inspection door hazardous location of engineering equipment; Simultaneously; on the safety inspection door, normally closed switch is set, this normally closed switch is connected in the control circuit of this project equipment, why is connected in control circuit; reason is that control circuit has low voltage and less electric current, and this maintenance safeguard measure can keep the security of safety inspection door.When engineering equipment kept normal operation, the safety inspection door kept closing, and normally closed switch remains closed, and control circuit is in the state that can connect, by the suitable components and parts such as contactor, control circuit is powered on, and then controlled the break-make of main circuit.When engineering equipment is overhauled, the safety inspection door is opened, normally closed switch remains open state, at this moment, the control circuit of engineering equipment is disconnected, preventing engineering equipment because the maloperation to control circuit is turned round, and then maintainer or repair apparatus are caused security threat, guarantee the safety of engineering equipment maintenance.
Another kind of maintenance safeguard measure is when maintenance, by isolating switch or other components and parts, manually disconnects main circuit and/or control circuit, and the corresponding maintenance of suspension direction board alert, and the No starting engineering equipment is realized the purpose that maintenance is protected.
The maintenance safeguard measure that prior art adopts, although can disconnect control circuit or main circuit that engineering equipment starts, avoid maloperation to cause the security threat that maintainer or maintenance engineering equipment are caused, thereby can play certain safeguard protection effect, but still have some potential safety hazards; Particularly for heavy construction equipment, not only profile is larger, and running operation needs a plurality of operating personnel's cooperations to carry out; The associative operation personnel probably start engineering equipment when not finding or do not know that engineering equipment is in inspecting state, therefore, the thing that engineering equipment turns round due to maloperation occurs often.For above-mentioned the first maintenance safeguard measure; when engineering equipment is in inspecting state; normally closed switch on the safety inspection door can only disconnect the control circuit of engineering equipment; occur abnormal at control circuit; during perhaps artificially by main circuit force start engineering equipment; engineering equipment still can turn round, and can form the safety of maintainer and repair apparatus equally to threaten, and reduces the security of engineering equipment maintenance.For the second maintenance safeguard measure, sense of responsibility and experience dependence to operating personnel are very strong, and when operating personnel's carelessness or general idea, engineering equipment also can be because maloperation is turned round, safety to maintainer and engineering equipment forms threat, reduces the security of engineering equipment maintenance; In addition, this maintenance safeguard measure also needs manual the operation, has not only increased operation link, also easily causes operating personnel to produce idea of leaving things to chance, and this has just reduced the security of engineering equipment maintenance further.
Therefore, how to avoid being under inspecting state engineering equipment because maloperation starts, the security that improves the engineering equipment maintenance is a technical barrier of current field of engineering technology.
Summary of the invention
For above-mentioned technical barrier, first purpose of the present invention is, a kind of electric control system for control engineering equipment is provided, to improve the security of engineering equipment maintenance.
On the basis of above-mentioned first purpose, second purpose of the present invention is, a kind of engineering equipment with above-mentioned electric control system is provided.
In order to realize above-mentioned first purpose, electric control system for control engineering equipment provided by the invention comprises main circuit, control circuit, startup controller and main contactor, described startup controller is connected on control circuit, the control coil of described main contactor and contact point are connected on control circuit and main circuit, first make contact and the second contact point lay respectively in described main circuit and described control circuit, and control respectively the break-make of described main circuit and described control circuit; Also comprise control device, described first make contact keeps identical state with the second contact point under described control device is controlled.
Optionally, described electric control system for control engineering equipment also comprises the first contactor and the second contactor, and described control device comprises auxiliary circuit and inspection switch; Described first make contact and the second contact point are respectively the contact point of described the first contactor and the second contactor; The control coil of the control coil of described the first contactor, the second contactor and inspection switch are connected in auxiliary circuit, the break-make of the disconnection of described inspection switch and Closed control auxiliary circuit.
Preferably, described control device comprises the first safety lock, second safety lock and a safety key, and described the first contactor and the second contactor state are controlled by the first safety lock and second safety lock respectively; When in described safety key and the first safety lock and second safety lock one coordinated, described first make contact and the second contact point remained open simultaneously, or remain closed simultaneously.
Optionally, when described safety key coordinated with the first safety lock, described first make contact and the second contact point remained open simultaneously, and when described safety key coordinated with second safety lock, described first make contact and the second contact point remained closed simultaneously.
Preferably, when described safety key coordinated with the first safety lock, described first make contact and the second contact point remained closed simultaneously, and when described safety key coordinated with second safety lock, described first make contact and the second contact point remained open simultaneously.
In order to realize above-mentioned second purpose, the first engineering equipment provided by the invention comprises apparatus body and safety inspection door, and described safety inspection door is arranged on described apparatus body, comprises that also above-mentioned the first is used for the electric control system of control engineering equipment; Described control device is controlled first make contact and the second contact point according to the state of safety inspection door, and when described safety inspection door is opened, described first make contact and the second contact point is remained open simultaneously.
The second engineering equipment provided by the invention comprises apparatus body and safety inspection door, described safety inspection door is arranged on described apparatus body, it is characterized in that, comprise that also above-mentioned the second is used for the electric control system of control engineering equipment, described inspection switch is arranged on described apparatus body or/and on the safety inspection door, when described safety inspection door was opened, described inspection switch state changed, and described first make contact and the second contact point are remained open simultaneously.
The third engineering equipment provided by the invention comprises apparatus body and safety inspection door, described safety inspection door is arranged on described apparatus body, comprise that also above-mentioned the third is used for the electric control system of control engineering equipment, described second safety lock is arranged on described apparatus body or/and on the safety inspection door, and controls opening and closing of described safety inspection door.
The 4th kind of engineering equipment provided by the invention comprises apparatus body and safety inspection door, and described safety inspection door is arranged on described apparatus body, also comprises above-mentioned the 4th kind of electric control system that is used for control engineering equipment; Described second safety lock is arranged on described apparatus body or/and on the safety inspection door, when described safety key separated with second safety lock, second safety lock made described safety inspection door stay open state.
The 5th kind of engineering equipment provided by the invention comprises apparatus body and safety inspection door, and described safety inspection door is arranged on described apparatus body, also comprises above-mentioned the 5th kind of electric control system that is used for control engineering equipment; Described second safety lock is arranged on described apparatus body or/and on the safety inspection door, when described safety key coordinated with second safety lock, second installs lock made the safety inspection door stay open state.
Compared with prior art, electric control system for control engineering equipment provided by the invention, comprise first make contact, the second contact point and control device, control device can make first make contact and the second contact point keep simultaneously identical state, first make contact and the second contact point are remained open simultaneously, or remain closed simultaneously, so just make to be kept chain state between the main circuit of control engineering equipment and control circuit.The electric control system of utilizing this technical scheme to provide, when the needs engineering equipment keeps running well, by control device, first make contact and the second contact point are remained closed, make main circuit and control circuit be in the state that can connect, engineering equipment can run well under other components and parts are controlled; When engineering equipment is overhauled, can first make contact, the second contact point be remained open by control device, and then make main circuit and control circuit remain open simultaneously state, even generation maloperation, engineering equipment can not start yet, thereby can avoid engineering equipment because maloperation starts, improve the security of engineering equipment maintenance.
In further technical scheme, described control device comprises auxiliary circuit and inspection switch, control first make contact and the second contact point by electrical equipment, this technical scheme can improve robotization and the far distance controlled that electric control system is controlled, for layout and the operation of electric control system facilitates.
In further optimal technical scheme, described control device comprises the first safety lock, second safety lock and a safety key, and the first safety lock and second safety lock all can match with safety key; And, the first safety lock and second safety lock are controlled respectively the state of first make contact and the second contact point, when safety key matches with the first safety lock or second safety lock, first make contact and the second contact point can remain open state respectively simultaneously under corresponding safety lock is controlled, perhaps be kept closed simultaneously.In this technical scheme, safety key has uniqueness, when controlling corresponding contact point by corresponding safety lock, needs again this safety key to control.When maintenance engineering equipment, need to carry out with the safety key that physical form exists the position changes, make the engineering equipment maintenance to carry out according to predetermined rules, predetermined rules can prevent operating personnel's carelessness and idea of leaving things to chance better, further improve the security performance of engineering equipment maintenance.
In addition, when above-mentioned electric control system combines with engineering equipment, and electric control system is combined with the safety inspection door of engineering equipment, the control device of electric control system is associated with the state of safety inspection door, namely when the safety inspection door is opened, make the first make contact of electric control system and the second contact point be in simultaneously off-state; When the safety inspection door is closed, make the first make contact of electric control system and the second contact point be in simultaneously closure state; The state of first make contact and the second contact point all is associated, the security performance in the time of can further improving the engineering equipment maintenance with the state of safety inspection door.
When the control device of electric control system comprises the first safety lock, second safety lock and a safety key, electric control system combines with engineering equipment, second safety lock is in the second contact point state of control, can also control opening and closing of safety inspection door, like this, match with second safety lock at safety key open the safety inspection door in, can make the second contact point and first make contact all remain open state.Like this, this technical scheme just can realize the function of two aspects simultaneously: the function of first aspect is that the safety inspection door is opened, for the maintenance of carrying out engineering equipment facilitates; The function of another aspect is that the main circuit of engineering equipment and control circuit are remained open, and improves the security in the engineering equipment maintenance process; The combination of these two aspects can make electric control system remain open state in maintenance process up hill and dale, thereby can solve more up hill and dale the safety issue of engineering equipment maintenance.
Description of drawings
Fig. 1 is the external structure schematic diagram of a kind of engineering equipment of providing of the embodiment of the present invention one;
Fig. 2 is the electric control system control principle drawing of the engineering equipment that provides of embodiment one;
Fig. 3 is that engineering equipment is in normal operation lower time, the control principle drawing of electric control system;
Fig. 4 is that engineering equipment is in inspecting state lower time, the control principle drawing of electric control system;
Fig. 5 is the control principle drawing of a kind of electric control system of providing of the embodiment of the present invention two.
In figure:
1: control isolating switch 2: start controller 3: safety key
40: the first contactors 41 of 4: the first safety locks: first make contact
5: main contactor 6: 60: the second contactors of second safety lock
71: apparatus body 8: main circuit 9: control circuit
10: power supply 11: switch board 12: inspection switch
13: auxiliary circuit
Embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the external structure schematic diagram of a kind of engineering equipment of providing of the embodiment of the present invention one, and Fig. 2 is the electric control system control principle drawing of the engineering equipment that provides of embodiment one.This example is when describing engineering equipment, and the electric control system that engineering equipment is used describes.
The engineering equipment that embodiment one provides comprises apparatus body 71, safety inspection door 62, switch board 11.Be equipped with in switch board 11 and control isolating switch 1, start controller 2.Electric control system in embodiment one is included as the main circuit 8 and the control circuit 9 of controlling main circuit 8 of the execution electric power supply of engineering equipment, main circuit 8 is connected with power supply 10, and connects contact point, control isolating switch 1 as the motor 7 of carrying out electrical equipment, main contactor 5; Control circuit 9 two ends are connected with power supply 10 and form electric loop, and are connected with the control coil that starts controller 2, main contactor 5.Startup controller 2 in control circuit 9 can be controlled the state of main contactor 5; The change of the state of main contactor 5 can be controlled the break-make of main circuit 8 again.
In addition, above-mentioned electric control system also comprises the first safety lock 4, second safety lock 6, safety key 3, first make contact 41 and second contact point 61.The first safety lock 4, second safety lock 6 and safety key 3 form the control device of electric control system, to control first make contact 41 and the second contact point 61, and make first make contact 41 and the second contact point 61 keep simultaneously identical state, namely keep first make contact 41 and the second contact point 61 to be in simultaneously off-state, perhaps be in simultaneously closure state.First make contact 41 and the second contact point 61 are connected in main circuit 8 and control circuit 9 in the mode of series winding respectively again, thereby control device can be controlled by first make contact 41 and the second contact point 61 state of main circuit 8 and control circuit 9.
Below control device is controlled first make contact 41 and the second contact point 61 particular content be described.
First make contact 41 and the second contact point 61 can be arranged on respectively the first safety lock 4 and second safety lock 6 inside, and the change of corresponding safety lock state can change the state of corresponding contact point.The first safety lock 4 and second safety lock 6 concrete structures can adopt disclosed technical scheme in prior art, such as selecting the disclosed technical scheme of Chinese patent literature CN2672836, CN2240020; Disconnect change with closure state as long as the change of safety lock state can drive the corresponding contact point, just can realize purpose of the present invention.Safety key 3 has uniqueness in an electric control system, and can side by side match with the first safety lock 4 and second safety lock 6 respectively and not, at safety key 3 with after second safety lock 6 separates, in the time of can coordinating with the first safety lock 4, operating personnel can change by safety key 3 state of the first safety lock 4; Concrete mode comprises multiple; Safety key 3 can be that plug-in type coordinates with the first safety lock 4, and namely when safety key 3 inserted the first safety lock 4, the state of the first safety lock 4 changed, and drives first make contact 41 and be transformed into closure by disconnection, or by the disconnection of closure conversion; Safety key 3 can be also to insert rotary the cooperation with the first safety lock 4, and namely when safety key 3 inserted the first safety lock 4 and rotates predetermined angular, the first safety lock 4 states changed, etc.Same safety key 3 separates with the first safety lock 4, also can adopt aforesaid way to coordinate with second safety lock 6.
In this example, first make contact 41 is for often opening contact point, and the second contact point 61 is normally closed contact point.Please refer to Fig. 3, this figure is that engineering equipment is in normal operation lower time, the control principle drawing of electric control system.Under engineering equipment was in normal operation, safety key 3 separated with second safety lock 6, and the second contact point 61 is remained closed; Simultaneously, safety key 3 matches with the first safety lock 4, makes first make contact 41 be converted to closure state by off-state; At this moment, control circuit 9 can be switched under the control that starts controller 2, and the control coil of main contactor 5 is powered on, and then make the contact point of main contactor 5 be converted to closure state by off-state, main circuit 8 energising, motor start-up satisfies that engineering equipment starts and the needs of normal operation.
Please refer to Fig. 4, this figure is that engineering equipment is in inspecting state lower time, the control principle drawing of electric control system.Under engineering equipment was in inspecting state, safety key 3 separated with the first safety lock 4, and first make contact 41 remains open state; And safety key 3 is coordinated with second safety lock 6, the second contact point 61 is converted to off-state by closure state.At this moment, change even start the state of controller 2, control circuit 9 can not form electric loop, when main contactor 5 can not move; Simultaneously, because first make contact 41 remains open, have maloperation, the contact point of main contactor 5 is closed, and perhaps during force start motor 7, main circuit 8 can not form the loop, and motor 7 can not start; Thereby can avoid motor because maloperation is turned round, improve the security of this project overhaul of the equipments.
Core concept of the present invention is to make between the main circuit 8 of electric control system and control circuit 9 has a control device, this control device can make the first make contact 41 and the second contact point 61 that are connected in main circuit 8 and control circuit 9 keep identical states, namely, perhaps both be kept closed simultaneously, perhaps both remain open simultaneously state; Both be kept closed lower time, electric control system can start and operation by control engineering equipment normally; When both remaining open state, electric control system can be avoided because maloperation starts engineering equipment, thereby can guarantee the security of engineering equipment maintenance.
According to the description of embodiment 1 and the core concept of the invention described above, can determine, first make contact 41 is not limited to often opens contact point, and the second contact point 61 is not limited to normally closed contact point.First make contact 41 in electric control system also can be normally closed contact point, simultaneously, makes the second contact point 61 for often opening contact point; In the case, when safety key 3 coordinated with the first safety lock 4, first make contact 41 and the second contact point 61 remained open, and under this state, can overhaul engineering equipment, guaranteed the safety of engineering equipment maintenance process; When safety key 3 coordinated with second safety lock 6, first make contact 41 and the second contact point 61 remained closed, engineering equipment can be under electric control system be controlled normal start-up and operation.
In order to improve further the security of engineering equipment maintenance, in embodiment one, second safety lock 6 also is arranged on apparatus body 71 by rights or/and on safety inspection door 62, like this, second safety lock 6 not only can be controlled closure and the disconnection of the second contact point 61, can also control the switching of safety inspection door 62; Second safety lock 62 can be electronic control lock or mechanical lock.In this example, second safety lock 6 is mechanical lock, and this mechanical lock not only can change the state of the second contact point 61 by the variation of part displacements, can also control the state of safety inspection door 62; When safety key 3 coordinates with second safety lock 6, when making the second contact point 61 be transformed into off-state from closure state, safety inspection door 62 can also be opened, thereby provide convenience for maintenance engineering equipment.
When the engineering equipment that embodiment one is provided overhauls, need safety key 3 just can open safety inspection door 62, therefore, need to from the first safety lock 4, safety key 3 be taken off, when taking off safety key 3, make first make contact 41 convert off-state to from closure state; Safety key 3 is matched with second safety lock 6, safety inspection door 62 is opened, simultaneously, second safety lock 6 makes the second contact point 61 be converted to off-state from closure state.Complete in maintenance, safety inspection door 62 is closed, and safety key 3 is taken off from second safety lock 6, and when coordinating with the first safety lock 4, engineering equipment could start running.Can find out, control simultaneously the state of safety inspection door 62 due to second safety lock 6, when the engineering equipment in embodiment one is overhauled, must be accompanied by the transfer of safety key 3 positions, and safety key 3 is coordinated with corresponding safety lock, make the change of first make contact 41 and the second contact point 61 states; Engineering equipment keep to be run well, must make safety inspection door 62 keep closing, and when safety key 3 was coordinated with the first safety lock 4, engineering equipment could run well.Thereby, when utilizing this technical scheme that engineering equipment is overhauled, must carry out according to predetermined rules, predetermined rules can prevent operating personnel's carelessness and idea of leaving things to chance better, further improve the security performance of engineering equipment maintenance.
In addition, because safety key 3 has uniqueness, safety key 3 residing position can the residing state of alert engineering equipment, when safety key 2 coordinates with the first safety lock 4, just can determine that engineering equipment is in normal operating condition; When safety key 2 coordinates with second safety lock 6, just can determine that engineering equipment is in inspecting state.
Be appreciated that, also can realize above-mentioned purpose by opposite mode, specifically, when safety key 2 coordinates with the first safety lock 4, first make contact 41 and the second contact point 61 remain open simultaneously, when safety key 2 coordinated with second safety lock 6, first make contact 41 and the second contact point 61 remained closed simultaneously; Adapt therewith, when keeping being associated between second safety lock 6 and safety inspection door 62, when safety key 2 coordinates with second safety lock 6, second safety lock 6 can make safety inspection door 62 be kept closed, at this moment, engineering equipment is in normal operation, and safety detection door 62 remains closed, to prevent that the maintainer from entering the hazardous location and overhauling; Separate with second safety lock 6 at safety key 2, and when coordinating with the first safety lock 4, first make contact 41 and the second contact point 61 remain open simultaneously, engineering equipment is in inspecting state, and simultaneously, second safety lock 6 makes safety inspection door 62 stay open state; Like this, the maintainer can enter the explosive area by safety inspection door 62 and overhaul, and this mode can keep the standardization of maintenance process equally, realizes improving the purpose of engineering equipment maintenance safety; And the difference by safety key 3 residing positions also can judge the residing state of engineering equipment.
Control to first make contact 41 and the second contact point 61 states is not limited to aforesaid way, and the embodiment of the present invention two just provides the electric control system with another kind of control device.
Please refer to Fig. 5, this figure is the control principle drawing of a kind of electric control system of providing of the embodiment of the present invention two.Different from the electric control system in embodiment one, embodiment two provides in electric control system, and control device comprises auxiliary circuit 13 and inspection switch 12.Electric control system comprises that also the contact point of the first contactor 40 and the second contactor 60, the first contactors 40 is that the contact point of first make contact 41, the second contactors 60 is the second contact point 61, and first make contact 41 and the second contact point 61 are often opens contact point.Auxiliary circuit 13 is connected with power supply 10, forms electric loop, the control coil of series winding the first contactor 40, control coil and the inspection switch 12 of the second contactor 60 on auxiliary circuit 13, and inspection switch 12 is normally closed switch.Under engineering equipment was in normal operation, inspection switch 12 remained closed, first make contact 41 and the second contact point 61 actions, and all remain closed, main circuit 8 and control circuit 9 are in the state of connection; When needs maintenance engineering equipment, inspection switch 12 is disconnected, first make contact 41 and the second contact point 61 are remained open.The electric control system that this embodiment provides also can realize the chain of main circuit 8 and control circuit 9, prevents that engineering equipment from starting because of maloperation, improves the security of engineering equipment maintenance.Be appreciated that, first make contact 41 and the second contact point 61 also can be normally closed contact point, inspection switch 12 is normal open switch, in the case, and when inspection switch 12 remains open, first make contact 41 and the second contact point 61 remain closed, engineering equipment is in normal operating condition, when inspection switch 12 is closed, and first make contact 41 and the second contact point 61 actions, and disconnect, engineering equipment is in inspecting state.
In order further to improve the security of engineering equipment maintenance, inspection switch 12 can also be associated with safety inspection door 62, inspection switch 12 is arranged on apparatus body 71 or/and on safety inspection door 62, and make inspection switch 12 open or close the change of generation state according to safety inspection door 62, thereby make the state of first make contact 41 and the second contact point 61 produce simultaneously predetermined variation.Inspection switch 12 can be specifically approach switch, and travel switch or other can change the switch of auxiliary circuit 13.
According to foregoing description, be appreciated that, realize that first make contact 41 and the second contact point 61 remain open simultaneously or the control device of closure state is not limited to aforesaid way, can also control by other mechanical structure the state of first make contact 41 and the second contact point 61, also can be by the control of electronic type device realization to first make contact 41 and the second contact point 61 states.Equally, various control device can be arranged on apparatus body 71 by suitable mode or/and on safety inspection door 62, to open at safety inspection door 62 when closing, control device is changed automatically, and then automatically control the state of first make contact 41 and the second contact point 61, and when safety inspection door 62 is opened, first make contact 41 and the second contact point 61 are remained open simultaneously, realize purpose of the present invention.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle 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 (9)
1. electric control system that is used for control engineering equipment, comprise main circuit (8), control circuit (9), start controller (2) and main contactor (5), described startup controller (2) is connected on control circuit (9), the control coil of described main contactor (5) and contact point are connected on control circuit (9) and main circuit (8), first make contact (41) and the second contact point (61) lay respectively in described main circuit (8) and described control circuit (9), and control respectively the break-make of described main circuit (8) and described control circuit (9), it is characterized in that, also comprise control device, described first make contact (41) keeps identical state with described the second contact point (61) under described control device is controlled, also comprise the first contactor (40) and the second contactor (60), described control device comprises auxiliary circuit (13) and inspection switch (12), described first make contact (41) and the second contact point (61) are respectively the contact point of described the first contactor (40) and the second contactor (60), the control coil of the control coil of described the first contactor (40), the second contactor (60) and inspection switch (12) are connected in auxiliary circuit (13), the break-make of the disconnection of described inspection switch (12) and Closed control auxiliary circuit (13).
2. the electric control system for control engineering equipment according to claim 1, it is characterized in that, described control device comprises the first safety lock (4), second safety lock (6) and a safety key (3), and described the first contactor (40) and the second contactor (60) state are controlled by the first safety lock (4) and second safety lock (6) respectively; When in described safety key (3) and the first safety lock (4) and second safety lock (6) one coordinated, described first make contact (41) and the second contact point (61) remained open simultaneously, or remain closed simultaneously.
3. the electric control system for control engineering equipment according to claim 2, it is characterized in that, described safety key (3) is with the first safety lock (4) when coordinating, described first make contact (41) and the second contact point (61) remain open simultaneously, when coordinating, described first make contact (41) and the second contact point (61) remain closed described safety key (3) simultaneously with second safety lock (6).
4. the electric control system for control engineering equipment according to claim 2, it is characterized in that, described safety key (3) is with the first safety lock (4) when coordinating, described first make contact (41) and the second contact point (61) remain closed simultaneously, when coordinating, described first make contact (41) and the second contact point (61) remain open described safety key (3) simultaneously with second safety lock (6).
5. engineering equipment, comprise apparatus body (71) and safety inspection door (62), described safety inspection door (62) is arranged on described apparatus body (71), it is characterized in that, also comprises the electric control system for control engineering equipment claimed in claim 1; Described control device is controlled first make contact (41) and the second contact point (61) according to the state of safety inspection door (62), and when opening, described first make contact (41) and the second contact point (61) are remained open simultaneously at described safety inspection door (62).
6. engineering equipment, comprise apparatus body (71) and safety inspection door (62), described safety inspection door (62) is arranged on described apparatus body (71), it is characterized in that, also comprise the electric control system for control engineering equipment claimed in claim 1, described inspection switch (12) is arranged on described apparatus body (71) or/and on safety inspection door (62), at described safety inspection door (62) when opening, described inspection switch (12) state changes, described first make contact (41) and the second contact point (61) are remained open simultaneously.
7. engineering equipment, comprise apparatus body (71) and safety inspection door (62), described safety inspection door (62) is arranged on described apparatus body (71), it is characterized in that, also comprise the electric control system for control engineering equipment claimed in claim 2, described second safety lock (60) is arranged on described apparatus body (71) or/and on safety inspection door (62), and controls opening and closing of described safety inspection door (62).
8. engineering equipment, comprise apparatus body (71) and safety inspection door (62), described safety inspection door (62) is arranged on described apparatus body (71), it is characterized in that, also comprises the electric control system for control engineering equipment claimed in claim 3; Described second safety lock (60) is arranged on described apparatus body (71) or/and on safety inspection door (62), when separating, second safety lock (6) makes described safety inspection door (62) stay open state to described safety key (3) with second safety lock (6).
9. engineering equipment, comprise apparatus body (71) and safety inspection door (62), described safety inspection door (62) is arranged on described apparatus body (71), it is characterized in that, also comprises the electric control system for control engineering equipment claimed in claim 4; Described second safety lock (6) is arranged on described apparatus body (71) or/and on safety inspection door (62), when coordinating, second installs lock (6) makes safety inspection door (62) stay open state to described safety key (3) with second safety lock (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910211711 CN101718968B (en) | 2009-11-10 | 2009-11-10 | Electric control system for controlling engineering equipment and engineering equipment |
| PCT/CN2010/074218 WO2011057491A1 (en) | 2009-11-10 | 2010-06-22 | Electric control system for controlling an engineering apparatus and said engineering apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910211711 CN101718968B (en) | 2009-11-10 | 2009-11-10 | Electric control system for controlling engineering equipment and engineering equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101718968A CN101718968A (en) | 2010-06-02 |
| CN101718968B true CN101718968B (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910211711 Active CN101718968B (en) | 2009-11-10 | 2009-11-10 | Electric control system for controlling engineering equipment and engineering equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101718968B (en) |
| WO (1) | WO2011057491A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718968B (en) * | 2009-11-10 | 2013-06-05 | 三一重工股份有限公司 | Electric control system for controlling engineering equipment and engineering equipment |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5789101A (en) * | 1980-11-21 | 1982-06-03 | Hitachi Ltd | Protecting device of controller |
| CN86209713U (en) * | 1986-12-02 | 1987-12-09 | 张文观 | Autoprotection power-saving switch in the case of power-off |
| JP3495384B2 (en) * | 1993-01-27 | 2004-02-09 | 和泉電気株式会社 | Safety switch device |
| CN2240020Y (en) * | 1995-11-23 | 1996-11-13 | 金泰工业有限公司 | Lock |
| CN2627634Y (en) * | 2003-05-30 | 2004-07-21 | 玴荣科技股份有限公司 | False touch prevent switching device |
| CN2672836Y (en) * | 2003-12-05 | 2005-01-19 | 周章华 | Electric switch lock |
| CN2924544Y (en) * | 2006-05-25 | 2007-07-18 | 卢景华 | High voltage hot-line display device |
| CN200964329Y (en) * | 2006-10-25 | 2007-10-24 | 上海梅山钢铁股份有限公司 | Safety actuating device for hoisting machinery electrical interlocks |
| CN201304910Y (en) * | 2008-10-13 | 2009-09-09 | 南车青岛四方机车车辆股份有限公司 | High-voltage interlock protection device |
| CN101718968B (en) * | 2009-11-10 | 2013-06-05 | 三一重工股份有限公司 | Electric control system for controlling engineering equipment and engineering equipment |
-
2009
- 2009-11-10 CN CN 200910211711 patent/CN101718968B/en active Active
-
2010
- 2010-06-22 WO PCT/CN2010/074218 patent/WO2011057491A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN101718968A (en) | 2010-06-02 |
| WO2011057491A1 (en) | 2011-05-19 |
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