CN102298402A - Walking type engineering machinery and temperature-control system thereof - Google Patents
Walking type engineering machinery and temperature-control system thereof Download PDFInfo
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- CN102298402A CN102298402A CN201110180210XA CN201110180210A CN102298402A CN 102298402 A CN102298402 A CN 102298402A CN 201110180210X A CN201110180210X A CN 201110180210XA CN 201110180210 A CN201110180210 A CN 201110180210A CN 102298402 A CN102298402 A CN 102298402A
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Abstract
The invention discloses a temperature-control system of a walking type engineering machinery. The system comprises an engine water tank and a water pump; besides, the system also comprises a plurality of radiators, which are correspondingly arranged in a plurality of spaces in which temperatures are to be adjusted; in addition, the plurality of radiators, the engine water tank and the water pump are connected through pipelines to form a water supply loop. According to the invention, an influence on a working temperature of a sensing element in an alpine area can be effectively overcome; and an applicable range of environment of a walking type excavator is substantially improved on the basis that comfortableness of a driver in work is ensured. Preferably, the system also comprises: a system controller, which is configured to receive a control instruction or a feedback signal and output a plurality of control signals; and a direction control valve set, which is arranged in a water supply loop that is between the water pump and the radiators as well as is configured to response a selection signal among the plurality of signals of the system controller and to make commutation so as to make a passage way between the water pump and the corresponding radiator be communicated. On the basis of the above-mentioned arrangement of the system, the invention also provides a walking type engineering machinery that applies the temperature-control system.
Description
Technical field
The present invention relates to the walking engineering machinery, be specifically related to a kind of walking engineering machinery and temperature control system thereof.
Background technology
The walking engineering machinery is with its unique simple structure, is able to carry out digging operation on slope, uneven and narrow and small place, has unique transaction capabilities.Below be that example is elaborated with the walking excavator.
As everyone knows, the walking excavator is used for work such as abrupt slope afforestation, river course and seabeach maintenance, the amphibious operation of swampland, the lumbering of mountain area forest, railway maintenance in a large number; When disaster such as snowslide, flash flood occurring, can also participate in the recovery of speedily carrying out rescue work and wait work.Based on the operating mode characteristics complicated and changeable that the walking excavator is faced, than other excavator types, needed logistics support condition almost is difficult to satisfy the walking excavator in the operation place.Therefore, supporting Hydraulic Elements and the electronic devices and components of complete machine should possess higher functional reliability.
At present, environment temperature is one of principal element that influences Hydraulic Elements and electronic devices and components reliability.For avoiding motor overheating, the motor of existing walking excavator generally adopts the straight water spray cold type diesel engine of cold type turbosupercharger in the band, its thermoregulating system only is to adopt powerful fan that the water from engine water tank is carried out independent cooling, and the heating radiator that utilizes quantitative water pump that the water pump in the engine water tank is delivered to pilothouse dispels the heat.Obviously, this heat-radiation loop is comparatively simple, and cooling and controlled position only relate to pilothouse and engine water tank, and does not all carry out efficient temperature control for Hydraulic Elements and comparatively concentrated main valve cabin and the central pivoting support cabin of electronic devices and components setting.Generally, can not carry out effective temperature adjustment control to other key positions.
In addition, the water pump in this scheme adopts the constant speed electric rotating machine, and its control mode does not have energy-saving effect.And because whole system does not possess multiple spot venting function, and then the job stability of its heat-radiation loop is relatively poor.
In view of this, demand urgently at existing walking engineering machinery carry out the temperature control optimal design, so that key position is carried out adjustment, thereby provide reliable guarantee for the job stability of Hydraulic Elements and electronic devices and components.
Summary of the invention
At above-mentioned defective, the technical matters that the present invention solves is to provide a kind of temperature control system of walking engineering machinery, on the basis of the temperature requirement that satisfies pilothouse, can carry out efficient temperature to other key position and regulate with working temperature requirement.On this basis, the present invention also provides a kind of walking engineering machinery of this temperature control system of application.
The temperature control system of walking engineering machinery provided by the invention comprises engine water tank and water pump; Also comprise: a plurality of heating radiators, relative set are treated in the conditioned space a plurality of, and described a plurality of heating radiator, engine water tank and water pump connect into water supply loop by pipeline.
Preferably, also comprise:
System controller is configured to receive steering order or feedback signal and exports a plurality of control signals;
The directional control valve group is arranged on described water pump to the water supply loop between the heating radiator, is configured in response to commutating from the selection signal in a plurality of control signals of described system controller, with the path between described water pump of conducting and the corresponding heating radiator.
Preferably, described a plurality of heating radiator comprises pilothouse heating radiator, main valve cabin heating radiator and central pivoting support cabin heating radiator, but described directional control valve group responds the path between the described water pump of described selection signal conducting and pilothouse heating radiator, main valve cabin heating radiator and the central pivoting support cabin heating radiator, the path between any one in perhaps above-mentioned a plurality of heating radiators or any two.
Preferably, also comprise well heater, be arranged in the upstream side water supply loop of described directional control valve group, described heater configuration becomes response to start from the startup heating signal in a plurality of control signals of described system controller, and response is from stopping heating signal and close down in a plurality of control signals of described system controller; Described system controller is the PLC controller.
Preferably, also comprise first temperature sensor, gather environment temperature and export the respective feedback signal to described system controller.
Preferably, also comprise:
Second temperature sensor is gathered the temperature in the pilothouse and is exported the respective feedback signal to described system controller;
Three-temperature sensor is gathered the temperature in the main valve cabin and is exported the respective feedback signal to described system controller; With
The 4th temperature sensor is gathered the temperature in central pivoting support cabin and is exported the respective feedback signal to described system controller.
Preferably, also comprise pilothouse fan, main valve cabin fan and central pivoting support cabin fan, all be configured in response to starting from the cooling signal in a plurality of control signals of described system controller.
Preferably, also comprise control panel, be configured to sending controling instruction to described system controller.
Preferably, described control panel is provided with:
First pushbutton switch is configured to export first steering order to described system controller, with the path between described water pump of conducting and the pilothouse heating radiator;
Second pushbutton switch is configured to export second steering order to described system controller, with the path between described water pump of conducting and the main valve cabin heating radiator;
The 3rd pushbutton switch is configured to export the 3rd steering order to described system controller, with the path between described water pump of conducting and the central pivoting support cabin heating radiator;
The 4th pushbutton switch is configured to export the 4th steering order to described system controller, with the path between the described water pump of conducting and main valve cabin heating radiator and the central pivoting support cabin heating radiator; With
The 5th pushbutton switch is configured to export the 5th steering order to described system controller, to start described pilothouse fan, main valve cabin fan and central pivoting support cabin fan.
Preferably, interlocking between described second pushbutton switch, the 3rd pushbutton switch and the 4th pushbutton switch.
Preferably, also be provided with on the described control panel:
Mode selector switch, when being configured to switch to automatic control mode, described system controller receives the feedback signal of each temperature sensor feedback; And when being configured to switch to manual control model, described system controller receives the steering order that each pushbutton switch sends.
Preferably, series connection first contactor on the circuit behind the automatic control mode contact of described mode selector switch, before the normally closed contact of described first contactor is serially connected in the input circuit of each pushbutton switch, its normally closed contact cut-out of upspringing when described first contactor is configured to connect.
Preferably, described water pump adopts buncher to drive, and is provided with frequency converter between the control end of described buncher and the described system controller; Described frequency converter is configured in response to exporting speed-regulating instruction from the speed-regulating signal in a plurality of control signals of described system controller to described buncher.
Preferably, also comprise serial connection back second contactor and the RC resistance in parallel, and also be provided with motor constant speed switch on the described control panel that described motor constant speed switch is configured to export the switching signal of connecting described second contactor with described frequency converter.
Preferably, also comprise the thermal relay normally closed contact that is serially connected between described frequency converter and the motor, when described electrothermal relay was configured to input current above threshold value, normally closed contact was upspring.
Preferably, described central pivoting support cabin radiator integral is " n " font, its bottom, both sides is cross-placed in operation valve group both sides, central pivoting support cabin respectively and fixedlys connected with the chassis respectively.
Preferably, described central pivoting support cabin heating radiator comprises a box heating radiator and four tube-type radiators; The top of described box heating radiator offers two outlet passes respectively, and the tube-type radiator formation that all connects horizontally disposed tube-type radiator successively by pipe adapter and vertically be provided with " n " font; The import of described central pivoting support cabin heating radiator and outlet are separately positioned on the lower end of the described tube-type radiator of vertical setting.
Preferably, also comprise the vent valve that is arranged in the described water supply loop, described vent valve comprises:
Valve seat has the perforation exhaust passage that is communicated with described water supply loop on it;
Plug screw, with described valve seat threaded engagement, and its medial extremity places in the described exhaust passage; Described plug screw screw in or screw out with respect to described valve seat with by or head, the end of the described exhaust passage of conducting; With
Moisture absorption apparatus is connected with the end of the exhaust passage of described valve seat.
Preferably, described moisture absorption apparatus comprises:
Shell body with import and export, its entrance point is connected with the end, exhaust passage of described valve seat;
The moisture absorption body is built in the described shell body; With
Have the radially ball valve core of through hole, be built in the entrance point of described shell body.
Walking engineering machinery provided by the invention comprises the pilothouse and the motor that are arranged on the chassis, and has main valve cabin and the central pivoting support cabin that is separated to form by central baffle on the described chassis; The temperature control system that also comprises foregoing walking engineering machinery.
Temperature control system provided by the invention adopts a plurality of heating radiators, and constitutes water supply loop with engine water tank and water pump, forms a plurality of different branches that treat the conditioned space heating that are, such as, pilothouse, main valve cabin, central pivoting support cabin etc.This programme effectively utilizes the temperature water in the engine water tank, can carry out efficient temperature to the key position with working temperature requirement according to actual needs regulates, so design can be guaranteed the job stability of each Hydraulic Elements and electrical part, and then promotes complete machine worker reliability of operation.Compared with prior art, the present invention can effectively overcome the influence of extremely frigid zones to the sensitive element working temperature, guaranteeing greatly to improve the environment scope of application of walking excavator on driver's the work comfortableness basis, has widened the application of engineering machinery.
In preferred version of the present invention, the employing system controller is finished the conducting of each branch of water supply loop with cooperating of directional control valve group or is ended.In the actual mechanical process, system controller can be according to manual steering order output control signal, that is, operating personnel can make it be in optimum district according to the controlled position of the artificial adjustment of local climate; Also can control the output control signal automatically according to feedback signal, can regulate control according to actual condition and implement the initiatively control strategy of optimizing, can set the optimum district of temperature adjustment at the thermal adaptability of components and parts, will treat respectively that by interval comparison order the temperature of conditioned space finally is controlled in the optimum district.In addition, water resource can be effectively dispatched in the conducting of each branch or by control, improves the efficiency of temperature control system.
The water pump of another preferred version of the present invention adopts buncher to drive, and is provided with frequency converter between the control end of buncher and the system controller; This frequency converter is configured in response to exporting speed-regulating instruction to buncher from the speed-regulating signal in a plurality of control signals of system controller.So be provided with, change rotating speed of motor by the setting to frequency converter internal frequency parameter, adapting to different weather conditions, and then the flow of adjusting the water route strengthens radiating rate, has further energy-saving effect.
Temperature control system provided by the invention is applicable to the circulation temperature adjustment of plant equipment such as metallurgy, mine, lifting transportation, is specially adapted to the walking engineering machinery.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the described walking excavator of embodiment;
Fig. 2 is the fundamental diagram of the described temperature control system of embodiment;
What Fig. 3 showed described main valve cabin heating radiator and central pivoting support cabin heating radiator specifically is provided with the position;
Fig. 4 is the I/O mouth wiring diagram of the excavator of walking described in embodiment electric-control system;
Fig. 5 is the main program flow chart of the described temperature control system of embodiment;
Fig. 6 is the I/O port address allocation table of the electric-control system of PLC shown in Fig. 4;
Fig. 7 is an automatic temperature-controlled subroutine flow chart shown in Fig. 5;
The axonometric drawing of the described directional control valve group that Fig. 8 and Fig. 9 form from two different visual angles respectively;
Figure 10 is the matrix cut-open view of this directional control valve group;
Figure 11 is the axonometric drawing of the described central pivoting support cabin heating radiator in the embodiment;
Figure 12 is the cut-open view of vent valve described in the embodiment.
Among the figure:
The water delivering orifice 41 of engine water tank 1, water pump 2, pilothouse heating radiator 3, main valve cabin heating radiator 4, main valve cabin heating radiator 4, the water inlet 42 of main valve cabin heating radiator 4, central pivoting support cabin heating radiator 5, box heating radiator 51, tube-type radiator 52, pipe adapter 53, import 54, outlet 55, chassis 6, central baffle 61, control main valve 62, central pivoting support operation valve group 63, system controller 7;
Directional control valve group 8,3-position 4-way solenoid directional control valve 81, bi-bit bi-pass solenoid directional control valve 82, bi-bit bi-pass solenoid directional control valve 83, matrix 84, the water outlet A mouth 841 of 3-position 4-way solenoid directional control valve, the water outlet B mouth 842 of 3-position 4-way solenoid directional control valve, the water outlet B mouth 843 of bi-bit bi-pass solenoid directional control valve 81, the water outlet B mouth 844 of bi-bit bi-pass solenoid directional control valve 83, magnet plug mouth 845, pressure regulation valve port 846, exhaust valve port 847, pressure chamber mouth 848, matrix 84 is to the water inlet 849 of 3-position 4-way solenoid directional control valve 81, matrix 84 is to the water inlet 8410 of bi-bit bi-pass solenoid directional control valve 82, and matrix 84 is to the water inlet 8411 of bi-bit bi-pass solenoid directional control valve 83, magnet plug 85, pressure regulator valve 86, vent valve plug screw 87, pressure plug screw 88;
Well heater 9, motor 10, frequency converter 11, pilothouse fan 12 (F1), main valve cabin fan 13 (F2), central pivoting support cabin fan 14 (F3), first temperature sensor 15, second temperature sensor 16, three-temperature sensor 17, the 4th temperature sensor 18, vent valve 19, valve seat 191, exhaust passage 1911, plug screw 192, moisture absorption apparatus 193, shell body 1931, moisture absorption body 1932, ball valve core 1933, afflux piece 20;
Mode selector switch SA, the first pushbutton switch FB1, the second pushbutton switch FB2, the 3rd pushbutton switch FB3, the 4th pushbutton switch FB4, the 5th pushbutton switch FB5, motor constant speed switch FB6, thermal relay normally closed contact FR, the first contactor KM1, the second contactor KM2.
Embodiment
Core of the present invention provides a kind of temperature control system that is used for the walking engineering machinery, regulates according to actual needs the key position with working temperature requirement is carried out efficient temperature.Specify present embodiment below in conjunction with Figure of description.
Be without loss of generality, this paper is that example is elaborated with the walking excavator.
See also Fig. 1, this figure is the one-piece construction synoptic diagram of the described walking excavator of present embodiment.
Main functional parts such as this walking excavator comprises equipment, gets on the bus, chassis, slew gear and hydraulic system constitute.Wherein, equipment, get on the bus, the self structure and the principle of work of funtion part such as chassis and slew gear be same as the prior art, those of ordinary skill in the art can realize that fully this paper repeats no more.Below will describe the temperature control system of the described walking excavator of present embodiment in detail.
See also Fig. 2, the figure shows the fundamental diagram of described temperature control system.
The actuating medium of this temperature control system comes from engine water tank 1, and water pump 2 exports the temperature water in the engine water tank 1 to water supply loop as dynamical element.Wherein, pilothouse heating radiator 3, main valve cabin heating radiator 4 and central pivoting support cabin heating radiator 5 are by respective line and engine water tank 1 and the aforementioned water supply loop of water pump 2 formations.Should be appreciated that each heating radiator correspondingly is arranged on pilothouse, main valve cabin, central pivoting support cabin wait conditioned space.Especially, see also Fig. 3, what the figure shows main valve cabin heating radiator 4 and central pivoting support cabin heating radiator 5 specifically is provided with the position.
As shown in the figure, by central baffle 61 with chassis 6 separated into two parts: main valve cabin and central pivoting support cabin; Wherein, control main valve 62 supports by chassis 6 with central pivoting support operation valve group 63, respectively by main valve cabin heating radiator 4, the heating radiator 5 local heat supplies of central pivoting support cabin, also other parts in each cabin is heated simultaneously.In fact, heating radiator 5 is not limited to three shown in the figure, and it is a plurality of also can to need to be set to two or other according to actual needs, as long as place water supply loop to satisfy the heat supply needs all in the scope that the application asks for protection.
For effectively utilizing the temperature water resource, improve the efficiency of temperature control system, can adopt system controller and directional control valve group to coordinate control.Wherein, system controller 7 is configured to receive steering order or feedback signal and exports a plurality of control signals; Directional control valve group 8 is arranged on water pump 2 to the water supply loop between the heating radiator, is configured in response to commutating from the selection signal in a plurality of control signals of system controller 7, with the path between conducting water pump 2 and the corresponding heating radiator.See also Fig. 4, this figure is the I/O mouth wiring diagram of electric-control system described in the present embodiment.
As everyone knows, the walking engineering machinery can be carried out operation at extremely frigid zones usually, and there is the possibility that can't satisfy the heat supply needs in the heat that temperature water is provided in the engine water tank 1.Based on this, can well heater 9 be set in the water supply loop of directional control valve group 8 upstream sides, so that thermal source to be provided.This well heater 9 is configured to respond from the startup heating signal in a plurality of control signals of system controller 7 and starts, and response is from stopping heating signal and close down in a plurality of control signals of system controller 7.The type of well heater 9 can be selected air oil heater or electric heater for use.
As previously mentioned, system controller 7 is configured to receive steering order or feedback signal and exports a plurality of control signals.That is to say that in the actual mechanical process, system controller can be distinguished i.e. manually control to make it be in optimum according to the controlled position of the artificial adjustment of local climate according to manual steering order output control signal; Also can control the output control signal automatically, can regulate control according to actual condition and implement the initiatively control strategy of optimizing, i.e. automated intelligent control according to feedback signal.
Based on the requirement of automatic control, system controller 7 preferred PLC controllers gather environment temperature by temperature sensor and reach the temperature of respectively treating conditioned space, and feedback signal are to the PLC controller.See also Fig. 5, this figure is the main program flow chart of the described temperature control system of present embodiment.On program controlled mode, mainly adopt the software and hardware combining mode, utilize the interval comparison command of PLC controller, realize the rationalization partition of temperature and the substep crossing condition redirect of program, carry out according to the following steps circulation:
Step 506 is carried out automatic temperature-controlled subroutine;
Below decompose explanation in detail.
Please, the figure shows the I/O port address allocation table of the electric-control system of PLC shown in Fig. 4 in the lump referring to Fig. 6.As Fig. 4 and shown in Figure 6, the simulating signal of operating environment collection is inputed in the analog quantity load module in real time, move through cpu clock through the digital signal of conversion then signal is passed in the data register of storer, these data are carried out handling along control by program.Output simulation after the routine processes and switching value signal export to respectively and start each peripheral components in analog output module, digital quantity output module and the communication module.
Particularly, first temperature sensor 15 is gathered environment temperature and is exported the respective feedback signal to system controller 7; Second temperature sensor 16 is gathered the temperature in the pilothouse and is exported the respective feedback signal to system controller 7; Three-temperature sensor 17 is gathered the temperature in the main valve cabin and is exported the respective feedback signal to system controller 7; The 4th temperature sensor 18 is gathered the temperature in central pivoting support cabin and is exported the respective feedback signal to system controller 7.Because those skilled in the art reach foregoing description on the basis of existing technology and can realize such scheme fully, therefore, are diagrammatic depiction, not shown second temperature sensor 16, three-temperature sensor 17 and the 4th temperature sensor 18 among Fig. 4.
In working control, directional control valve group 8 is become one by 3-position 4-way solenoid directional control valve 81, bi-bit bi-pass solenoid directional control valve 82 and bi-bit bi-pass solenoid directional control valve 83, but the path (three's heat supply simultaneously) between signal conducting water pump 2 and pilothouse heating radiator 3, main valve cabin heating radiator 4 and the central pivoting support cabin heating radiator 5 is selected in response respectively, perhaps and the path between any one (heat supply separately) in the last heating radiator or any two (two while heat supplies).
Below sketch four kinds of concrete heat-supplying modes.
A. main valve cabin and two cabins, central pivoting support cabin heat supply simultaneously: when environment temperature was lower than-10 ℃, main valve cabin and central pivoting support cabin then needed heat supply simultaneously.The environment temperature of the first temperature sensor collection feeds back to the PLC controller, if environment temperature is when being lower than-10 ℃, PLC sends control signal to 3-position 4-way solenoid directional control valve 81, and that solenoid valve DT4 is got is electric, and the P mouth of this valve is communicated with working hole A, B; Under this state, one road hot water flows out the laggard main valve cabin heating radiator 4 of going into from the B mouth, and another road hot water enters central pivoting support cabin heating radiator 5 through central baffle 61 backs (directional control valve group 8 is arranged on) after the A mouth flows out.
B. the only heat supply of main valve shipping bill: when environment temperature at-10 ℃ to-5 ℃ when interval, then need separately heat supply to be carried out in the main valve cabin.The PLC controller sends control signal to bi-bit bi-pass solenoid directional control valve 82, and that solenoid valve DT2 is got is electric, and the P mouth of this valve is communicated with working hole B; Under this state, hot water flows out laggard water inlet 42 of going into main valve cabin heating radiator 4 from the B mouth.
C. the only heat supply of central pivoting support shipping bill: when environment temperature-10 ℃ with-5 ℃ when interval, then need separately heat supply to be carried out in central pivoting support cabin.The PLC controller sends control signal to 3-position 4-way solenoid directional control valve 81, and that solenoid valve DT1 is got is electric, and the P mouth of this valve is communicated with the B mouth; Under this state, hot water enters central pivoting support cabin heating radiator 5 after the B mouth flows out.
D. the independent heat supply of pilothouse: when environment temperature-5 ℃ with 10 ℃ when interval, then need separately pilothouse to be carried out heat supply.The PLC controller sends control signal to bi-bit bi-pass solenoid directional control valve 83, and that solenoid valve DT3 is got is electric, and this valve P mouth is communicated with the B mouth; Under this state, hot water enters pilothouse heating radiator 4 after the B mouth flows out.
The water delivering orifice 41 of above-mentioned main valve cabin heating radiator 4, the backflow of above each heating radiator can be flowed back to engine water tank 1 after afflux piece 20 gathers.
What specify is, aforementioned each characteristic temperature threshold value-10 ℃ ,-5 ℃ and 10 ℃ only are used for the description scheme design concept, should be appreciated that above-mentioned threshold value does not limit the scope that the application asks for protection.Equally, heat-supplying mode can be selected according to different needs, is not limited to above-mentioned four kinds of modes.
For improving the energy-saving effect of this temperature control system, the water pump 2 preferred bunchers 10 that adopt in this programme drive, such as, under aforementioned heat-supplying mode a state, need motor adjustment running to satisfy and heat requirement; Under aforementioned heat-supplying mode a or b state, need the running of motor middling speed to satisfy and heat requirement; And under aforementioned heat-supplying mode d state, then the motor low-speed motion just can satisfy and heats requirement.Be provided with frequency converter 11 between the control end of this buncher and the system controller 7; And frequency converter 11 is configured in response to exporting speed-regulating instruction to buncher from the speed-regulating signal in a plurality of control signals of system controller 7.Specifically in conjunction with shown in Figure 4, export in the peripheral frequency variant speed regulating circuit, employing is connected the control port of PLC controller with the lead-out terminal of frequency converter 11, take Y10～Y17 totally 8 control ports altogether, the startup of the break-make control motor 10 by the corresponding controling end mouth, stop, the selection of high, medium and low shelves speed governing.Simultaneously, at the different frequency parameter of frequency converter 11 inner settings number speed interval, thereby can satisfy on the basis of heat-production functions according to different control strategies with the high, medium and low shelves of correspondence, can select in the motor, the low speed energy-saving operation, and then the flow of adjusting the water route strengthens radiating rate.
Need to prove, the described temperature control system of this programme not only can carry out adjustment when lower temperature, when higher temperature, also can carry out adjustment, with guarantee temperature with main valve cabin, central pivoting support cabin, pilothouse be controlled at 10 ℃ with 45 ℃ optimum interval in.Particularly, also comprise pilothouse fan 12, main valve cabin fan 13 and central pivoting support cabin fan 14, all be fixed on the chassis 9, and be configured in response to starting from the cooling signal in a plurality of control signals of system controller 7.
As shown in Figure 7, when the driver switches to fully automatic mode with the program schema change-over switch according to actual needs, the PLC controller is then realized redirect automatically according to the data of data register in programmed instruction, finally rotating speed of motor is regulated the size that changes flow, the unlatching of fan the most at last the temperature of main valve cabin, central pivoting support cabin, pilothouse be controlled at 10 ℃ with 45 ℃ optimum interval in, realize intelligent thermoregulating control.Compared with prior art, this programme can be realized round-the-clockly down the walking excavator being carried out active optimizing frequency conversion temperature adjustment, improves the adaptive faculty of various parts under extreme operating condition, and it is obvious to strengthen whole aircraft reliability and energy-saving effect, the raising operational comfort.
In addition, this programme also is provided with the motor overload defencive function.Be connected in series a thermal relay normally closed contact FR between frequency converter 11 and motor 10, when this electrothermal relay was configured to input current and surpasses threshold value, the normally closed contact FR that upsprings realized the protection of motor 10 with frequency converter 11.
As previously mentioned, this programme also possesses manual operation function, and switch, button of exporting each steering order etc. is arranged on the control panel, is to be understood that, respective switch, button etc. can be arranged on original control panel of walking excavator, also a control panel can be set independently as required.
As shown in Figure 4, this control panel (not shown) is provided with mode selector switch SA, this mode selector switch SA can be at automatic control mode and is manually switched between the control model, when being configured to switch to automatic control mode, system controller 7 receives the feedback signal of each temperature sensor feedback; And when being configured to switch to manual control model, system controller receives the steering order that each pushbutton switch sends.
Particularly, at above-mentioned four kinds of heat-supplying modes, also be correspondingly provided with four pushbutton switches on the control panel, wherein, the first pushbutton switch FB1 is configured to export first steering order to the PLC controller, with the path between conducting water pump 2 and the pilothouse heating radiator 3 (heat-supplying mode d); The second pushbutton switch FB2 is configured to export second steering order to the PLC controller, with the path (heat-supplying mode b) between conducting water pump 2 and the main valve cabin heating radiator 4; The 3rd pushbutton switch FB3 is configured to export the 3rd steering order to described PLC controller, with the path (heat-supplying mode c) between conducting water pump 2 and the central pivoting support cabin heating radiator 5; The 4th pushbutton switch FB4 is configured to export the 4th steering order to the PLC controller, and (heat-supplying mode a) with the path between conducting water pump 2 and main valve cabin heating radiator 4 and the central pivoting support cabin heating radiator 5.Wherein, for avoiding the selection maloperation of aforementioned three kinds of heat-supplying modes, interlocking between the second pushbutton switch FB2, the 3rd pushbutton switch FB3 and the 4th pushbutton switch FB4; As shown in Figure 4, input signal button peripheral circuit adopts intensification loop, two cabins, intensification loop, main valve cabin and intensification loop, central pivoting support cabin three road interlock modes, guarantees to realize between three patterns switching freely, is independent of each other.
In addition, at above-mentioned cooling method, also be correspondingly provided with the 5th pushbutton switch FB5 on the control panel, the 5th pushbutton switch FB5 is configured to export the 5th steering order to the PLC controller, to start pilothouse fan 12, main valve cabin fan 13 and central pivoting support cabin fan 14.Certainly, each fan also can independently be controlled by pushbutton switch respectively, adopts a switch totally to control shown in the figure and be not limited to.
In the frequency control holding circuit; the working environment complicacy requires motor is realized constant speed control toward contact; as shown in Figure 4; the second contactor KM2 is in parallel with frequency converter 11 with the circuit that RC resistance constitutes; promptly; the second contactor KM2 and RC resistance serial connection back are in parallel with frequency converter 11, can realize the control of non-frequency constant speed without direct starter motor 10 under the situation of frequency converter 11 like this.Correspondingly, also be provided with motor constant speed switch FB6 on the control panel, this motor constant speed switch FB6 is configured to export the switching signal of connecting the second contactor KM2.
At above-mentioned automatic control mode and manual control model, this programme also is provided with interlock function.As shown in Figure 4, the series connection first contactor KM1 on the circuit behind the automatic control mode contact of mode selector switch SA, before the normally closed contact J1 of this first contactor KM1 is serially connected in the input circuit of each pushbutton switch, and its normally closed contact J1 cut-outs of upspringing closed manual control model input circuit with realization when first contactor configuration KM1 became to connect.In the peripheral frequency variant speed regulating circuit of output, automatic and manual mode switches employing contactor KM1 and carries out interlocking, like this, under the manual control operation, any time can only be according to a kind of pattern enforcement control.
Based on prior art; the aforementioned directional control valve group 8 that is become one by 3-position 4-way solenoid directional control valve 81, bi-bit bi-pass solenoid directional control valve 82, bi-bit bi-pass solenoid directional control valve 83 can adopt the different structure form, as long as satisfy the function needs all in the scope that the application asks for protection.Please in the lump referring to Fig. 8, Fig. 9, Figure 10, wherein, the axonometric drawing of the described directional control valve group that Fig. 8 and Fig. 9 form from two different visual angles respectively, Figure 10 is the matrix cut-open view of this directional control valve group.
As Fig. 8-shown in Figure 10,3-position 4-way solenoid directional control valve 81, bi-bit bi-pass solenoid directional control valve 82, bi-bit bi-pass solenoid directional control valve 83 carry out lower leaf combination on the modular with matrix 84.Consider the compactedness of walking excavator inner space and the integration of control simultaneously, on matrix 11, designed the version of central waterway and both sides water outlet, wherein, the water outlet A mouth of 3-position 4-way solenoid directional control valve is 841, the water outlet B mouth of 3-position 4-way solenoid directional control valve is 842, the water outlet B mouth of bi-bit bi-pass solenoid directional control valve 81 is 843, the water outlet B mouth of bi-bit bi-pass solenoid directional control valve 83 is 844.Simultaneously, the some controls mouths of design on matrix 11: magnet plug mouth 845 is used to connect magnet plug 85, with the iron filings in the adsorption liquid stream; Pressure regulation valve port 846 is used to connect pressure regulator valve 86; Exhaust valve port 847 is used to connect vent valve plug screw 87; Pressure chamber mouth 848 connects pressure plug screw 88 in order to measure the valve internal pressure.In addition, matrix is 849 to the water inlet of 3-position 4-way solenoid directional control valve 81, and matrix is 8410 to the water inlet of bi-bit bi-pass solenoid directional control valve 82, and matrix to the water inlet of bi-bit bi-pass solenoid directional control valve 83 is 8411.
As Fig. 6, in a particularly preferred embodiment of the present invention, the central pivoting support of walking excavator belongs to polymorphic structure, and central pivoting support operation valve group 33 is positioned at central pivoting support top.If will need to consider the position of cold wind mouth to its heat radiation, make the cold wind mouth not directly facing to central pivoting support operation valve group 33, should continue heat radiation with the form of hot water storage heat radiation simultaneously, should be taken into account that also top also needs central pivoting support operation valve group 33 is dispelled the heat so adopt four-point supporting span of arch assembling type framework.This framework bridges above central pivoting support operation valve group 33, beam is done in the top that 2 cast formula heating radiators 58 are positioned at central pivoting support operation valve group 33, other 2 cast formula heating radiators 58 and a box heating radiator 61 are done post, connect to form by 4 two siphunculus joints 60 between the Liang Yuzhu, adopt mount pad 56 and rubber blanket 55 overall fixed on the chassis.
For heating radiator, multiple structure type is arranged in the prior art, central pivoting support cabin heating radiator 5 integral body of this programme are " n " font, as shown in Figure 3, its bottom, both sides is cross-placed in operation valve group 63 both sides, central pivoting support cabin respectively and fixedlys connected with chassis 9 respectively.For describing the concrete structure of this central authorities' pivoting support cabin heating radiator 5 in detail, please in the lump referring to Figure 11, this figure is the axonometric drawing of central pivoting support cabin heating radiator.
This central authorities' pivoting support cabin heating radiator 5 comprises a box heating radiator 51 and four tube-type radiators 52; The top of box heating radiator 51 offers two outlet passes respectively, and tube-type radiator 52 formation that all connect horizontally disposed tube-type radiator 52 successively by pipe adapter 53 and vertically be provided with " n " font; The lower end that the import 54 of central authorities' pivoting support cabin heating radiator 5 and outlet 55 are separately positioned on the tube-type radiator 52 of vertical setting.So design, this central authorities' pivoting support cabin heating radiator 5 can dispel the heat to central pivoting support operation valve group 63 in all directions.
In addition, because in the actual job process, hot water flows in pipeline all the time, unavoidably run into and retain too much water vapor problem, residual water vapor can cause part effectively to be heated in heating radiator, valve and pipeline.In order to address this problem, vent valve is set in water supply loop usually, same, the vent valve of multiple version is arranged in the prior art, but influence surrounding environment because aqueous vapor is discharged the back in actual applications, pollute corrosion to causing secondary water vapor in the cabin.
The vent valve 19 that present embodiment provided has moisture absorbing, has effectively evaded the existing defective of existing vent valve.Please, the figure shows the cut-open view of vent valve in the lump referring to Figure 12.
This vent valve 19 mainly is made of valve seat 191, plug screw 192 and moisture absorption apparatus 193, wherein, has the perforation exhaust passage 1911 that is communicated with water supply loop on the valve seat 191; Plug screw 192 and valve seat threaded engagement, and its medial extremity places in the exhaust passage 1911; When plug screw 192 screw in or screw out with respect to valve seat 191 with by or head, the end of this exhaust passage 1911 of conducting, conducting state can realize bleeding; Moisture absorption apparatus 193 is connected with the end of the exhaust passage 1911 of valve seat 191, avoids effluxing to absorb aqueous vapor when the exhaust.
As shown in figure 12, this moisture absorption apparatus 193 comprises a shell body 1931 with import and export, and its entrance point is connected with 1911 ends, exhaust passage of valve seat 191; Its shell body 1931 is built-in with moisture absorption body 1932, and this moisture absorption body 1932 can select for use wood chip or sponge etc. to fill; Simultaneously, in the entrance point of shell body 1931, be provided with ball valve core 1933, have radially through hole on it, can set up the inside and outside passage that is communicated with on the one hand, can avoid graininess moisture absorption body in shell body 1931, to expose on the other hand.
Obviously, the vent valve 19 that present embodiment provided can be arranged on the emphasis position in water route, and the too much water vapor of retention can in time be got rid of, and has controlled to greatest extent for causing secondary water vapor to pollute corrosion in the cabin.The water route hypotony of seeing certain as the driver can get loose pressure regulation plug screw 192, the effect of being under pressure of water vapor in the pipeline is ejected in the shell body 1931, realize the storage discharging of water vapor, the air pressure that ball valve core 1933 can be adjusted in the shell body 1931 communicates it all the time with the extraneous air atmosphere.
Temperature control system based on aforementioned shoe formula excavator has carried out low-temperature test under-40 ℃ working environment, the temperature that prototype equipment is placed cold-test chamber and make cold-test chamber slowly, be cooled to-42 ℃ step by step, and under this temperature, store 24 hours.After testing, the model machine state of the art is intact, before the starting engine, and warming pan work 40min, functional check such as water temperature reaches 40 ℃, starts successfully, and turntable revolution, oil cylinder are flexible, the wheel leg advances, retreats, takes turns the leg interlock is normal, and the numerical information instrument shows all normal.
The above only is a preferred implementation 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 (21)
1. the temperature control system of walking engineering machinery comprises engine water tank and water pump; It is characterized in that, also comprise:
A plurality of heating radiators, relative set are treated in the conditioned space a plurality of, and described a plurality of heating radiator, engine water tank and water pump connect into water supply loop by pipeline.
2. the temperature control system of walking engineering machinery according to claim 1 is characterized in that, also comprises:
System controller is configured to receive steering order or feedback signal and exports a plurality of control signals;
The directional control valve group is arranged on described water pump to the water supply loop between the heating radiator, is configured in response to commutating from the selection signal in a plurality of control signals of described system controller, with the path between described water pump of conducting and the corresponding heating radiator.
3. the temperature control system of walking engineering machinery according to claim 2, it is characterized in that, described a plurality of heating radiator comprises pilothouse heating radiator, main valve cabin heating radiator and central pivoting support cabin heating radiator, but described directional control valve group responds the path between the described water pump of described selection signal conducting and pilothouse heating radiator, main valve cabin heating radiator and the central pivoting support cabin heating radiator, the path between any one in perhaps above-mentioned a plurality of heating radiators or any two.
4. the temperature control system of walking engineering machinery according to claim 3, it is characterized in that, also comprise well heater, be arranged in the upstream side water supply loop of described directional control valve group, described heater configuration becomes response to start from the startup heating signal in a plurality of control signals of described system controller, and response is from stopping heating signal and close down in a plurality of control signals of described system controller.
5. the temperature control system of walking engineering machinery according to claim 3 is characterized in that, also comprises:
First temperature sensor is gathered environment temperature and is exported the respective feedback signal to described system controller; And described system controller is the PLC controller.
6. the temperature control system of walking engineering machinery according to claim 5 is characterized in that, also comprises:
Second temperature sensor is gathered the temperature in the pilothouse and is exported the respective feedback signal to described system controller;
Three-temperature sensor is gathered the temperature in the main valve cabin and is exported the respective feedback signal to described system controller; With
The 4th temperature sensor is gathered the temperature in central pivoting support cabin and is exported the respective feedback signal to described system controller.
7. the temperature control system of walking engineering machinery according to claim 6, it is characterized in that, also comprise pilothouse fan, main valve cabin fan and central pivoting support cabin fan, all be configured in response to starting from the cooling signal in a plurality of control signals of described system controller.
8. the temperature control system of walking engineering machinery according to claim 6 is characterized in that, also comprises control panel, is configured to sending controling instruction to described system controller.
9. the temperature control system of walking engineering machinery according to claim 8 is characterized in that, described control panel is provided with:
First pushbutton switch is configured to export first steering order to described system controller, with the path between described water pump of conducting and the pilothouse heating radiator;
Second pushbutton switch is configured to export second steering order to described system controller, with the path between described water pump of conducting and the main valve cabin heating radiator;
The 3rd pushbutton switch is configured to export the 3rd steering order to described system controller, with the path between described water pump of conducting and the central pivoting support cabin heating radiator;
The 4th pushbutton switch is configured to export the 4th steering order to described system controller, with the path between the described water pump of conducting and main valve cabin heating radiator and the central pivoting support cabin heating radiator; With
The 5th pushbutton switch is configured to export the 5th steering order to described system controller, to start described pilothouse fan, main valve cabin fan and central pivoting support cabin fan.
10. the temperature control system of walking engineering machinery according to claim 9 is characterized in that, interlocking between described second pushbutton switch, the 3rd pushbutton switch and the 4th pushbutton switch.
11. the temperature control system of walking engineering machinery according to claim 10 is characterized in that, also is provided with on the described control panel:
Mode selector switch, when being configured to switch to automatic control mode, described system controller receives the feedback signal of each temperature sensor feedback; And when being configured to switch to manual control model, described system controller receives the steering order that each pushbutton switch sends.
12. the temperature control system of walking engineering machinery according to claim 11, it is characterized in that, series connection first contactor on the circuit behind the automatic control mode contact of described mode selector switch, before the normally closed contact of described first contactor is serially connected in the input circuit of each pushbutton switch, its normally closed contact cut-out of upspringing when described first contactor is configured to connect.
13. the temperature control system according to each described walking engineering machinery in the claim 1 to 12 is characterized in that, described water pump adopts buncher to drive, and is provided with frequency converter between the control end of described buncher and the described system controller; Described frequency converter is configured in response to exporting speed-regulating instruction from the speed-regulating signal in a plurality of control signals of described system controller to described buncher.
14. the temperature control system of walking engineering machinery according to claim 13, it is characterized in that, also comprise serial connection back second contactor and the RC resistance in parallel with described frequency converter, and also be provided with motor constant speed switch on the described control panel, described motor constant speed switch is configured to export the switching signal of connecting described second contactor.
15. the temperature control system of walking engineering machinery according to claim 14, it is characterized in that, also comprise the thermal relay normally closed contact that is serially connected between described frequency converter and the motor, when described electrothermal relay was configured to input current above threshold value, normally closed contact was upspring.
16. the temperature control system of walking engineering machinery according to claim 3, it is characterized in that, described central pivoting support cabin radiator integral is " n " font, its bottom, both sides is cross-placed in operation valve group both sides, central pivoting support cabin respectively and fixedlys connected with the chassis respectively.
17. the temperature control system of walking engineering machinery according to claim 16 is characterized in that, described central pivoting support cabin heating radiator comprises a box heating radiator and four tube-type radiators; The top of described box heating radiator offers two outlet passes respectively, and the tube-type radiator formation that all connects horizontally disposed tube-type radiator successively by pipe adapter and vertically be provided with " n " font; The import of described central pivoting support cabin heating radiator and outlet are separately positioned on the lower end of the described tube-type radiator of vertical setting.
18. the temperature control system of walking engineering machinery according to claim 3 is characterized in that, also comprises the vent valve that is arranged in the described water supply loop, described vent valve comprises:
Valve seat has the perforation exhaust passage that is communicated with described water supply loop on it;
Plug screw, with described valve seat threaded engagement, and its medial extremity places in the described exhaust passage; Described plug screw screw in or screw out with respect to described valve seat with by or head, the end of the described exhaust passage of conducting; With
Moisture absorption apparatus is connected with the end of the exhaust passage of described valve seat.
19. the temperature control system of walking engineering machinery according to claim 18 is characterized in that, described moisture absorption apparatus comprises:
Shell body with import and export, its entrance point is connected with the end, exhaust passage of described valve seat;
The moisture absorption body is built in the described shell body; With
Have the radially ball valve core of through hole, be built in the entrance point of described shell body.
20. the walking engineering machinery comprises the pilothouse and the motor that are arranged on the chassis, and has main valve cabin and the central pivoting support cabin that is separated to form by central baffle on the described chassis; It is characterized in that, also comprise temperature control system as the described walking engineering machinery of claim 1-19.
21. walking engineering machinery according to claim 20 is characterized in that, described walking engineering machinery is specially the walking excavator.
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| CN 201110180210 CN102298402B (en) | 2011-06-29 | 2011-06-29 | Walking type engineering machinery and temperature-control system thereof |
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| CN 201110180210 CN102298402B (en) | 2011-06-29 | 2011-06-29 | Walking type engineering machinery and temperature-control system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109766592A (en) * | 2018-12-20 | 2019-05-17 | 中国北方车辆研究所 | Plateau becomes height above sea level operating condition armored vehicle chassis system design method |
| CN109808888A (en) * | 2019-02-25 | 2019-05-28 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of extreme low-altitude remote emergency refitting breakdown lorry system |
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| CN202141958U (en) * | 2011-06-29 | 2012-02-08 | 徐工集团工程机械股份有限公司科技分公司 | Walking type engineering machinery and temperature-control system thereof |
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| GB1524157A (en) * | 1975-10-08 | 1978-09-06 | Daimler Benz Ag | Internal combustion engine with fuel heating |
| CN201125806Y (en) * | 2007-10-23 | 2008-10-01 | 陈新华 | Diesel oil intelligent heaters |
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| CN109766592A (en) * | 2018-12-20 | 2019-05-17 | 中国北方车辆研究所 | Plateau becomes height above sea level operating condition armored vehicle chassis system design method |
| CN109766592B (en) * | 2018-12-20 | 2021-07-20 | 中国北方车辆研究所 | Method for designing chassis system of armored vehicle under altitude-variable working condition in plateau |
| CN109808888A (en) * | 2019-02-25 | 2019-05-28 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of extreme low-altitude remote emergency refitting breakdown lorry system |
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| CN102298402B (en) | 2013-09-11 |
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Effective date of registration: 20200408 Address after: 221000 No. 1 peach mountain road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: XCMG CONSTRUCTION MACHINERY CO., LTD. ROAD MACHINERY BRANCH Address before: 221004 No. 8, Mount Blue Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: XCMG CONSTRUCTION MACHINERY CO., LTD. SCIENCE AND TECHNOLOGY BRANCH |
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