CN207143693U - The watering cooling system of milling machine - Google Patents

Abstract

The utility model discloses a kind of watering cooling system of milling machine, it is intended to solves the water in cold district operation in water tank and the possibility freezed be present, its drip irrigation device is：A kind of watering cooling system of milling machine, the water pipe that is connected including water tank, with water tank and the nozzle for being arranged at water pipe water side, the water pipe is provided with hydraulic pump, the nozzle is towards milling rotor, also include the heater being fixed on water tank, the heater is provided with the heating pipe connected with water tank, and heating pipe is provided with first circulation water pump, the water tank is provided with temperature control system, and the temperature control system includes：Testing agency, it is fixedly installed in water tank bottom；Controlling organization, it is coupled to the testing agency；And power sector.A kind of watering cooling system of milling machine of the present utility model, by detecting water of the water temperature when water temperature is too low in heating water tank, so as to avoid because the water in water tank freezes, cause milling machine can not normal work the problem of.

Description

The watering cooling system of milling machine

Technical field

Engineering machinery field is the utility model is related to, more specifically, it relates to a kind of watering cooling system of milling machine.

Background technology

Milling machine is one of main machine of maintenance of surface operation, for diseases such as the rut to bituminous paving, carbuncle bag, crackings Evil carries out maintenance work, and it carries out milling by the milling rotor in milling planning rotor cap case to having damaged road surface, and passes through Belt material delivering is cleared up and reclaimed to the old material of milling, to lay new road surface.Milling machine is also widely used for cement road The surface galling in face, i.e., in old cement pavement top layer cutting 1cm or so, so as to obtain the surface of smooth, coarse cleaning, it is Ensuing asphalt paving prepares high-quality surface.

Milling rotor inevitably results from substantial amounts of heat during milling ground, if turning not in time to milling Son, which carries out cooling processing, to be damaged；Milling machine typically carries out cooling processing by sprinkler system to milling rotor, watering System include water tank, hydraulic motor, centrifugal water pump, electromagnetic water valve, water pipe, nozzle, hydraulic motor with fixed rotating speed drive from Edema with the heart involved pump, the water being stored in water tank are sprayed after being pressurizeed via centrifugal water pump with fixed sprinkling flow from nozzle；But in reality Border finds that above-mentioned cooling method still has the drawbacks of certain in using.

Such as：Publication No. be CN105544365A Chinese patent announce a kind of milling machine watering amount control method and Milling machine points out that because the milling depth and Milling Speed of milling rotor have differences, therefore required watering amount is also not Together, it, which is used, calculates milling depth and Milling Speed, and changes the speed of hydraulic motor according to result of calculation, so as to turn for milling Son provides suitable watering amount.

But the water temperature in different season water tanks is also different, such as in north of China cold district water tank The possibility freezed be present in water.

Therefore need to propose a kind of new scheme to solve this problem.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is the watering cooling system for providing a kind of milling machine System, by detecting water of the water temperature when water temperature is too low in heating water tank, so as to avoid, because the water in water tank freezes, causing milling machine Can not normal work the problem of.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of watering of milling machine Cooling system, including water tank, the water pipe that is connected with water tank and the nozzle for being arranged at water pipe water side, the water pipe are provided with liquid Press pump, the nozzle is towards milling rotor, in addition to the heater being fixed on water tank, and the heater is provided with and water The heating pipe of case connection, heating pipe are provided with first circulation water pump, and the water tank is provided with temperature control system, the temperature control system System includes：Testing agency, water tank bottom is fixedly installed in, for detecting water temperature, and output water temperature detection signal；Controlling organization, The testing agency is coupled to, for receiving and responding to the water temperature detection signal, to control first circulation water pump and heating The keying of device；And power sector, for providing operating voltage for the temperature control system.

By using above-mentioned technical proposal, at work, the cooling water in hydraulic pressure pumped water tank, cooling water passes through milling machine Water pipe is simultaneously sprayed by nozzle, so as to the milling rotor that cools, suppresses airborne dust；When ambient temperature is in subzero, in water tank There is the possibility freezed in water, and solid water can not be by hydraulic pressure pumped, therefore be provided with heater；When testing agency detects During the possibility that the too low presence of water temperature in water tank is freezed, while heater and first circulation water pump are opened, first circulation water pump Feed-tank is returned after extracting the heated device heating of the cold water in water tank out, so as to avoid the water in water tank from freezing, causes milling machine Can not normal work situation occur.

The utility model is further arranged to：The testing agency includes temperature sensor, and the temperature sensor is fixed Water tank bottom is installed on, the temperature sensor couples with controlling organization, and output water temperature detection signal.

By using above-mentioned technical proposal, temperature sensor is fixedly installed in water tank bottom, so as to avoid because of water level mistake The low situation for causing temperature sensor can not detect water temperature occurs.

The utility model is further arranged to：The controlling organization according to water temperature detection signal control first circulation water pump and The keying of heater, when detection temperature is less than low temperature predetermined value, open the first circulation water pump and heater.

The utility model is further arranged to：The controlling organization includes, the first comparison circuit, is coupled to the temperature and passes Sensor, for output low temperature comparison signal that the water temperature received detection signal compares with low temperature predetermined value；First switch electricity Road, first comparison circuit is coupled to, for controlling first circulation water pump, heater and power supply according to the first comparison signal Break-make between mechanism.

The utility model is further arranged to：First comparison circuit includes, and low temperature reference voltage generating circuit, has First resistor, its one end are coupled to the second direct current, and the other end is grounded after being connected with a second resistance；Wherein, from first resistor The low temperature reference voltage is produced between second resistance；Low temperature comparator, have an in-phase input end, an inverting input and One output end, the in-phase input end are coupled to low temperature reference voltage, and inverting input is coupled to the output end of temperature transmitter, Output end exports low temperature comparison signal.

The utility model is further arranged to：The first switch circuit includes, NPN triode Q1, its grounded emitter, Base stage by a 3rd resistor be coupled to the low temperature comparison signal and by one the 4th resistance and emitter stage altogether；Relay KM1, its coil one end are coupled to the first direct current, and the other end is coupled to the colelctor electrode of the NPN triode Q1, and its normally opened contact is opened Pass is serially connected between power sector and first circulation water pump, heater；Diode D1, its negative electrode are coupled to first direct current Electricity, anode are coupled between the colelctor electrode of NPN triode Q1 and relay KM1 coil.

The utility model is further arranged to：Watering cooling system also includes the cooling device being fixed on water tank, described Cooling device is provided with the cooling water pipe connected with water tank, and the cooling water pipe is provided with second circulation water pump, the control machine Structure controls the keying of second circulation water pump and cooling device according to water temperature detection signal, when detection temperature is higher than high temperature predetermined value When, open the second circulation water pump and cooling device.

By using above-mentioned technical proposal, the cooling water being sprayed on milling rotor takes away milling by the principle for heat absorption of gasifying The heat on rotor is dug, so as to play a part of cooling down milling rotor, if cooling water self-temperature is higher, its heat absorbed It will be extremely limited, and cause the problem of cooling-down effect difference be present；When temperature sensor detects the water temperature over-high in water tank, open simultaneously Dynamic second circulation water pump and cooling device, the higher moisture of water the temperature inside the box is extracted out by second circulation water pump, high-temperature water is by cooling down Water tank is returned after device cooling, so as to reduce the water temperature in water tank, is avoided because cooling water own temperature is too high, is led to not effectively The problem of cooling down milling rotor occurs.

The utility model is further arranged to：The controlling organization also includes, and the second comparison circuit, is coupled to the temperature Sensor, for output high temperature comparison signal that the water temperature received detection signal compares with high temperature predetermined value；Second switch Circuit, second comparison circuit is coupled to, for controlling second circulation water pump, cooling device and electricity according to the second comparison signal Break-make between source mechanism.

The utility model is further arranged to：Second comparison circuit includes, and high temperature reference voltage generating circuit, has One the 5th resistance, its one end are coupled to the second direct current, and the other end after one the 6th resistant series with being grounded；Wherein, from the 5th electricity The high temperature reference voltage is produced between resistance and the 6th resistance；High temperature comparator, there is an in-phase input end, an inverting input And an output end, the in-phase input end are coupled to high temperature reference voltage, inverting input is coupled to the output of temperature sensor End, output end output high temperature comparison signal.

The utility model is further arranged to：The second switch circuit includes, NPN triode Q2, its grounded emitter, Base stage by one the 7th resistance be coupled to the control OFF signal and by one the 8th resistance and emitter stage altogether；Relay KM2, its Coil one end is coupled to the first direct current, and the other end is coupled to NPN triode Q2 colelctor electrode, its normally opened contact switch concatenation Between power sector and second circulation water pump, cooling device；Diode D2, its negative electrode are coupled to first direct current, anode It is coupled between NPN triode Q2 colelctor electrode and relay KM2 coil.

In summary, the utility model has the advantages that：Watering cooling system provided by the utility model has Stronger adaptive capacity to environment, milling machine avoid cooling water in cold area operation by heating devices heat cooling water Freeze, cooler-water temperature is reduced by cooling device in high-temperature area operation, avoided because of the too high influence milling of cooling water temperature The cooling of rotor.

Brief description of the drawings

Fig. 1 is overall structure diagram of the present utility model；

Fig. 2 is the sectional view of the utility model partial view, main to represent temperature sensor and nozzle；

Fig. 3 is circuit diagram of the present utility model；

Fig. 4 is power circuit diagram of the present utility model.

In figure：1st, water tank；11st, water pipe；12nd, nozzle；13rd, hydraulic pump；3rd, heater；31st, heating pipe；32nd, first Water circulating pump；4th, cooling device；41st, cooling water pipe；42nd, second circulation water pump；51st, controlling organization；52nd, temperature sensor；53、 First comparison circuit；531st, low temperature reference voltage production circuit；54th, first switch circuit；55th, the second comparison circuit；551st, it is high Warm reference voltage produces circuit；56th, second switch circuit.

Embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

The watering cooling system of milling machine, as shown in Figure 1 and Figure 2, including be fixedly installed on milling machine body water tank 1, The water pipe 11 connected with the bottom of water tank 1 and it is arranged at the delivery port of water pipe 11 and towards the nozzle 12 of milling rotor, wherein water pipe 11 extend in milling planning rotor cap case, and are provided with hydraulic pump 13, and milling machine is in normal work, when milling rotor cuts ground Amount of heat is produced, to avoid the heat damages milling rotor, the cooling water in water tank 1, cooling water are extracted out by hydraulic pump 13 It is sprayed on through water pipe 11 and nozzle 12 on milling rotor, because the heat transfer on heat transfer principle milling rotor is to cooling Water, the heat on milling rotor is taken away in the heated volatilization of cooling water, so as to play a part of the milling rotor that cools.

But milling machine in cold environments operation when（Such as Northern Part of China）, the water in water tank 1 may be because freezing And cooling water is sprayed without normal direction milling rotor, and environment temperature deficiency thinks that milling rotor cools, milling machine will under this state Can not normal work, to sprinkle water, cooling system can adapt to the job task of cold area, as shown in figure 1, watering cooling System also includes the heater 3 being fixed on water tank 1, and heater 3 can be selected in Publication No. CN205168272U A kind of vehicular water heater of state's patent announcement, heater 3 are provided with the heating pipe 31 connected with water tank 1, heating pipe 31 are made up of two sections of independent pipelines, and are all connected with the hot water chamber and water tank 1 of heater 3, and hot-water line 31 is provided with first Water circulating pump 32, when the aqueous water in water tank 1 has the possibility freezed, open first circulation water pump 32 and extract out in water tank 1 Cold water, cold water are entered in heater 3 by a segment pipe of hot-water line 31, and the hot water after the heated heating of device 3 is by hot-water line 31 another segment pipe returns feed-tank 1, so as to play a part of aqueous water in heating water tank 1, avoids because cooling water freezes to lead Watering cooling system is caused not start normally.

As shown in Figure 1, Figure 2, Figure 3 shows, water tank 1 is additionally provided with temperature control system and is used to control first circulation water pump 32 and heating to fill 3 keying is put, temperature control system includes being fixedly installed in the testing agency of the bottom of water tank 1, so as to enter by testing agency to water temperature Row monitoring, and output water temperature detection signal in real time；The controlling organization 51 of testing agency is coupled to, for receiving and responding to water temperature Detection signal, to control the keying of first circulation water pump 32 and heater 3；And for providing operating voltage for temperature control system Power sector；In summary, by testing agency's real time automatic detection water temperature, the quick water temperature of heating water tank 1 in time is reached Technique effect, and by the keying of the control first circulation of controlling organization 51 water pump 32 and heater 3, without operating personnel Control heater 3 manually, reduce the operating procedure of milling machine.

In the utility model, Fig. 4 is power unit circuit figure, and its input is coupled to 220V AC powers, through over commutation The first direct current Vout_1 is exported after decompression filtering, first direct current Vout_1 is 12V；Second direct current Vout_2, this Two direct current Vout_2 are 5V, so that controlling organization 51 uses, in addition, from the input of power sector directly to first circulation water Pump 32 and heater 3 are powered, i.e., the power supply of first circulation water pump 32 and heater 3 is 220V AC powers.

As shown in Figure 2 and Figure 3, testing agency includes temperature sensor 52, and temperature sensor 52 is fixedly installed in the bottom of water tank 1 Portion, avoiding causing temperature sensor 52 can not detect water temperature because water level is too low, temperature sensor 52 couples with controlling organization 51, and Output water temperature detection signal；Controlling organization 51 controls opening for first circulation water pump 32 and heater 3 according to water temperature detection signal Close, when detection temperature is less than low temperature predetermined value, open first circulation water pump 32 and heater 3.

In the utility model, as shown in Figure 2 and Figure 3, controlling organization 51 includes, the first comparison circuit 53, is coupled to temperature biography Sensor 52, for output low temperature comparison signal that the water temperature received detection signal compares with low temperature predetermined value；First switch Circuit 54, the first comparison circuit 53 is coupled to, for controlling first circulation water pump 32, heater 3 according to the first comparison signal Break-make between power sector；First comparison circuit 53 includes, low temperature reference voltage generating circuit 531, has first resistor R1, its one end are coupled to the second direct current Vout_2, and the other end is grounded after being connected with a second resistance R2；Wherein, from the first electricity The low temperature reference voltage is produced between resistance R1 and second resistance R2；Low temperature comparator A1, there is an in-phase input end, one anti-phase Input and an output end, in-phase input end are coupled to low temperature reference voltage, and inverting input is coupled to temperature sensor 52 Output end, output end output low temperature comparison signal.

First switch circuit 54 includes, as shown in figure 3, NPN triode Q1, its grounded emitter, base stage pass through one the 3rd Resistance R3 be coupled to the low temperature comparison signal and by one the 4th resistance R4 and emitter stage altogether；Relay KM1, its coil one End is coupled to the first direct current Vout_1, and the other end is coupled to the colelctor electrode of the NPN triode Q1, its normally opened contact switch concatenation Between power sector and first circulation water pump 32, heater 3；Diode D1, its negative electrode are coupled to first direct current Vout_1, anode are coupled between the colelctor electrode of NPN triode Q1 and relay KM1 coil.

The course of work of controlling organization 51 is as follows：

The low temperature reference voltage made comparisons with low temperature comparison signal, root are exported by low temperature reference voltage generating circuit 531 According to the actual water temperature detected in water tank 1, a minimum temperature value is preset, when on minimum temperature value, temperature sensor 52 exports Value be more than low temperature reference voltage, comparator A1 output low levels, now triode Q1 be not turned on；When temperature sensor 52 exports Value be less than low temperature reference voltage, comparator A1 output high level, turn-on transistor Q1, relay KM1 obtain electric, inner-core production Raw magnetic attraction normally opened contact switch S1, conducting AC power begin to warm up water temperature with first circulation pump 32, heater 3.

Further to improve adaptive capacity to environment of the present utility model, as shown in Figure 1, Figure 2, Figure 3 shows, watering cooling system is also Including the cooling device 4 being fixed on water tank 1, cooling device 4 is provided with the cooling water pipe 41 connected with water tank 1, cooling water pipe 41 are provided with second circulation water pump 42, and wherein cooling device 4 can be selected the Chinese patent that notification number is CN204494885U and announce A kind of air-cooled water cooling machine, cooling water pipe 41 is similar with heating pipe 31 to be equally made up of two sections of independent tubes, controlling organization 51 control the keying of second circulation water pump 42 and cooling device 4 according to water temperature detection signal, when detection temperature makes a reservation for higher than high temperature During value, second circulation water pump 42 and cooling device 4 are opened, when temperature sensor 52 detects the water temperature over-high in water tank 1, by Controlling organization 51 starts second circulation water pump 42 and cooling device 4, and the second water pump 42 extracts the high-temperature water in water tank 1, high-temperature water out Convey in recovery tank 1 after the cooling of cooling device 4, so as to reduce the cooler-water temperature in water tank 1, avoid because coolant water temperature is spent Height effectively can not carry out cooling processing to milling rotor.

In the utility model, as shown in Figure 2 and Figure 3, controlling organization 51 also includes, and the second comparison circuit 55, is coupled to temperature Sensor 52, for output high temperature comparison signal that the water temperature received detection signal compares with high temperature predetermined value；Second opens Powered-down road 56, the second comparison circuit 55 is coupled to, for controlling second circulation water pump 42, cooling device according to the second comparison signal Break-make between 4 and power sector.

As shown in figure 3, the second comparison circuit 55 includes, high temperature reference voltage generating circuit 551, there is one the 5th resistance R5, its one end are coupled to the second direct current Vout_2, and the other end is grounded after being connected with one the 6th resistance R6；Wherein, from the 5th electricity High temperature reference voltage is produced between resistance R5 and the 6th resistance R6；High temperature comparator A2, there is an in-phase input end, an anti-phase input End and an output end, in-phase input end are coupled to high temperature reference voltage, and inverting input is coupled to the output of temperature sensor 52 End, output end output high temperature comparison signal.

As shown in Figure 1, Figure 3, second switch circuit 56 includes, NPN triode Q2, its grounded emitter, and base stage passes through one 7th resistance R7 be coupled to control OFF signal and by one the 8th resistance R8 and emitter stage altogether；Relay KM2, its coil one end coupling The first direct current Vout_1 is connected to, the other end is coupled to NPN triode Q2 colelctor electrode, and its normally opened contact switch is serially connected with electricity Diode D2 between source mechanism and second circulation water pump 42, cooling device 4, its negative electrode are coupled to first direct current Vout_1, Anode is coupled between NPN triode Q2 colelctor electrode and relay KM2 coil.

Another course of work of controlling organization 51 is as follows：

The high temperature reference voltage made comparisons with high temperature comparison signal, root are exported by high temperature reference voltage generating circuit 551 According to the actual water temperature detected in water tank 1, a highest temperature value is preset, when under highest temperature value, temperature sensor 52 exports Value be less than high temperature reference voltage, comparator A2 output low levels, now triode Q2 be not turned on；When temperature sensor 52 exports Value be more than high temperature reference voltage, comparator A2 output high level, turn-on transistor Q2, relay KM2 obtain electric, inner-core production Raw magnetic attraction normally opened contact switch S2, conducting AC power start to reduce water temperature with second circulation pump 42, cooling device 4.

Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims (9)

1. a kind of watering cooling system of milling machine, including water tank（1）With water tank（1）The water pipe of connection（11）And it is arranged at Water pipe（11）The nozzle of water side（12）, the water pipe（11）It is provided with hydraulic pump（13）, the nozzle（12）Turn towards milling Son, it is characterised in that：Also include being fixed on water tank（1）On heater（3）, the heater（3）It is provided with and water tank （1）The heating pipe of connection（31）, heating pipe（31）It is provided with first circulation water pump（32）, the water tank（1）It is provided with temperature Control system, the temperature control system include：

Testing agency, it is fixedly installed in water tank（1）Bottom, for detecting water temperature, and output water temperature detection signal；

Controlling organization（51）, the testing agency is coupled to, for receiving and responding to the water temperature detection signal, to control One water circulating pump（32）And heater（3）Keying；

And power sector, for providing operating voltage for the temperature control system.

2. the watering cooling system of milling machine according to claim 1, it is characterised in that：The testing agency includes temperature Sensor（52）, the temperature sensor（52）It is fixedly installed in water tank（1）Bottom, the temperature sensor（52）With control machine Structure（51）Coupling, and output water temperature detection signal.

3. the watering cooling system of milling machine according to claim 2, it is characterised in that：The controlling organization（51）According to Water temperature detection signal controls first circulation water pump（32）And heater（3）Keying, when detection temperature is less than low temperature predetermined value When, open the first circulation water pump（32）And heater（3）.

4. the watering cooling system of milling machine according to claim 3, it is characterised in that：The controlling organization（51）Bag Include,

First comparison circuit（53）, it is coupled to the temperature sensor（52）, for the water temperature detection signal that will receive with it is low Warm predetermined value, which compares, exports low temperature comparison signal；

First switch circuit（54）, it is coupled to first comparison circuit（53）, for controlling first according to the first comparison signal Water circulating pump（32）, heater（3）Break-make between power sector.

5. the watering cooling system of milling machine according to claim 4, it is characterised in that：First comparison circuit（53） Including,

Low temperature reference voltage generating circuit（531）, there is first resistor, its one end is coupled to the second direct current, the other end and one It is grounded after second resistance series connection；Wherein, the low temperature reference voltage is produced between first resistor and second resistance；

Low temperature comparator, there is an in-phase input end, an inverting input and an output end, the in-phase input end is coupled to low Warm reference voltage, inverting input are coupled to temperature sensor（52）Output end, output end output low temperature comparison signal.

6. the watering cooling system of milling machine according to claim 5, it is characterised in that：The first switch circuit（54） Including,

NPN triode Q1, its grounded emitter, base stage are coupled to the low temperature comparison signal and by one by a 3rd resistor 4th resistance and emitter stage are altogether；

Relay KM1, its coil one end are coupled to the first direct current, and the other end is coupled to the colelctor electrode of the NPN triode Q1, its Normally opened contact switch is serially connected with power sector and first circulation water pump（32）, heater（3）Between；

Diode D1, its negative electrode are coupled to first direct current, and anode is coupled to the colelctor electrode and the relay of NPN triode Q1 Between KM1 coil.

7. the watering cooling system of milling machine according to claim 2, it is characterised in that：Cooling system of sprinkling water also includes solid Due to water tank（1）On cooling device（4）, the cooling device（4）It is provided with and water tank（1）The cooling water pipe of connection（41）, The cooling water pipe（41）It is provided with second circulation water pump（42）, the controlling organization（51）According to water temperature detection signal control the Two-cycle pump（42）And cooling device（4）Keying, when detection temperature is higher than high temperature predetermined value, open the second circulation Water pump（42）And cooling device（4）.

8. the watering cooling system of milling machine according to claim 7, it is characterised in that：The controlling organization（51）Also wrap Include,

Second comparison circuit（55）, it is coupled to the temperature sensor（52）, for water temperature detection signal and the height that will be received Warm predetermined value, which compares, exports high temperature comparison signal；

Second switch circuit（56）, it is coupled to second comparison circuit（55）, for controlling second according to the second comparison signal Water circulating pump（42）, cooling device（4）Break-make between power sector.

9. the watering cooling system of milling machine according to claim 8, it is characterised in that：Second comparison circuit（55） Including,

High temperature reference voltage generating circuit（551）, there is one the 5th resistance, its one end is coupled to the second direct current, the other end with It is grounded after one the 6th resistant series；Wherein, the high temperature reference voltage is produced between the 5th resistance and the 6th resistance；

High temperature comparator, has an in-phase input end, an inverting input and an output end, and the in-phase input end is coupled to height Warm reference voltage, inverting input are coupled to temperature sensor（52）Output end, output end output high temperature comparison signal.