CN207616910U - A kind of concrete mixer - Google Patents

Abstract

The utility model discloses a kind of concrete mixers, and solving concrete mixer in use usually can be due to extraneous（As powered off or tripping）And it can not be in normal work, and the problem of staff is often difficult to discover, is influenced the working efficiency of concrete mixer due to factors such as carelessness, its key points of the technical solution are that:Including opening and closing detection device, temperature-detecting device, voltage comparator device, voltage comparator device is coupled to receiving voltage comparison signal and exports the human body detection device of human testing signal, human body detection device is coupled to receive the judgment means that the output of human testing signal judges signal, it is coupled to judgment means and judges signal and in response to judging signal to realize the suggestion device of prompt to receive, a kind of concrete mixer of the utility model, staff can be prompted when concrete mixer can not work normally, to restore the normal work of concrete mixer as early as possible.

Description

A kind of concrete mixer

Technical field

The utility model is related to a kind of mixing plant, more particularly to a kind of concrete mixer.

Background technology

Concrete mixer be cement, sandstone aggregate and water mixing and mixing at concrete mixture machinery.

Concrete mixer in use usually can be due to extraneous（As powered off or tripping）And it can not be in In the normal course of work, and then lead to the normal use for seriously affecting concrete mixer, and staff is due to carelessness etc. Factor is often difficult to discover, and influences the working efficiency of concrete mixer, it is known that concrete mixer includes motor, and just Often motor can generate heat when work, and there is room for improvement.

Utility model content

The purpose of this utility model is to provide a kind of concrete mixer, can not work normally in concrete mixer When staff is prompted, to restore the normal work of concrete mixer as early as possible.

The above-mentioned technical purpose of the utility model technical scheme is that：

A kind of concrete mixer, including be used to detect concrete mixer it is whether in running order and export keying inspection The keying detection device of signal is surveyed, is set on the motor of concrete mixer and is coupled to and opens and closes detection device to receive keying Detection signal is for detecting the temperature of motor and export the temperature-detecting device of corresponding temperature detection signal, be preset with temperature Reference signal and temperature-detecting device is coupled to receive temperature detection signal and by temperature detection signal and temperature reference signal It is compared and the voltage comparator device of output voltage comparison signal, is coupled to voltage comparator device with receiving voltage comparison signal And it exports the human body detection device of human testing signal, be coupled to human body detection device to receive the output judgement of human testing signal The judgment means of signal, be coupled to judgment means with receive judge signal and in response to judge signal with realize prompt prompt fill It sets；

When switching temperature of the in the open state and temperature less than normal work of equipment is detected when opening and closing detection device And when judgment means judge someone around concrete mixer, suggestion device is prompted at this time.

Using the above scheme, here by opening and closing the setting of detection device may be implemented whether to be in concrete mixer The detection of normal operating conditions, and concrete may further determine that by the setting of temperature-detecting device, voltage comparator device Whether the state in power-off passes through human body detection device to blender at this time when concrete mixer is in the state of power-off And judgment means can be realized to whether someone is detected around concrete mixer, be in and opened in detection concrete mixer Open state and concrete mixer can carry out staff by suggestion device in the case of being not in working condition and someone Prompt can restore the normal work of concrete mixer in the case where staff knows as early as possible, reduce concrete stirring Machine is in the case where power-off.

Preferably, further including being set between temperature-detecting device and voltage comparator device to amplify temperature detection letter Number signal amplifying apparatus.

Using the above scheme, the amplification to temperature detection signal is effectively realized by signal amplifying apparatus here, by putting Big temperature detection signal is it is possible to prevente effectively from temperature detection signal can not carry out normal since the signal strength of itself is too low Transmission, influence the normal work of concrete mixer.

Preferably, the voltage comparator device includes the temperature reference circuit and coupling for output temperature reference signal Be connected to temperature reference circuit and temperature-detecting device with and meanwhile receive temperature reference signal and temperature detection signal and by temperature base Calibration signal and temperature detection signal are compared and the voltage comparator circuit of output voltage comparison signal.

Using the above scheme, staff can be facilitated preferable as needed by the setting of temperature reference circuit here The normal working temperature of motor is defined, and the setting of voltage comparator circuit can facilitate staff to be completed as needed to motor Detection temperature and setting motor normal temperature comparison.

Preferably, the suggestion device includes being coupled to judgment means to judge signal and in response to judging signal to receive Judge signal and in response to judging signal to realize the light prompt circuit of light prompt and be coupled to judgment means to receive To realize the auditory tone cues electric circuit of auditory tone cues.

Using the above scheme, the setting of light prompt circuit can carry out light prompt to staff, to avoid work people Member can also timely be prompted when can not hearing auditory tone cues under a riot of sound environment, and auditory tone cues electric circuit Setting auditory tone cues can be carried out to staff, and occur in staff not observing the light of light prompt circuit When, staff can preferably be reminded by the form of sound, therefore light prompt circuit and auditory tone cues electric circuit herein Staff can be adequately reminded in conjunction with setting.

Preferably, the light prompt circuit includes being coupled to judgment means to judge signal and export switching to believe to receive Number switching part and be coupled to switching part to receive switching signal and realize luminous illumination region in response to switching signal.

Using the above scheme, strobe light emission can be achieved by the combination setting of switching part and illumination region, compared to single Light emitting species prompt, the form of strobe light emission can preferably prompt staff.

Preferably, further include be coupled to judgment means with receive the time set for judging signal and exporting timing signal, Time set is coupled to receive timing signal and in response to the control device of timing signal；

When switching temperature of the in the open state and temperature less than normal work of equipment is detected when opening and closing detection device And when judgment means judge around concrete mixer nobody, control device controls redundant electrical power to concrete mixer at this time It is powered.

It using the above scheme, can be when can't detect staff by the setting of time set and control device After a period of time, concrete mixer is automatically turned on by control device, avoids concrete mixer for a long time unattended In the state of for a long time be in stop working state.

Preferably, the time set includes being coupled to judgment means to judge signal and output time adjusting letter to receive Number time adjustment circuit and be coupled to time adjustment circuit with receiving time Regulate signal and export timing signal to judge The timing circuit of device.

Using the above scheme, staff is facilitated actively to adjust phase according to individual demand by the setting of time adjustment circuit Should how long people not when control device for opening.

Preferably, the auditory tone cues electric circuit is loud speaker.

Using the above scheme, since auditory tone cues electric circuit is loud speaker, loud speaker can have on the basis of cost-effective Effect realizes the prompt to staff.

In conclusion the utility model has the advantages that：Here by opening and closing detection device and temperature detection The state of concrete mixer is analyzed in the setting of device, and combines human body detection device, judgment means can be according to people Whether at the scene, it is prompted by suggestion device if field, and can timely start standby electricity when no one is on the scene Source makes concrete mixer resume work as soon as possible.

Description of the drawings

Fig. 1 be open and close detection device, temperature-detecting device, signal amplifying apparatus circuit connection diagram；

Fig. 2 is the circuit connection diagram of voltage comparator device, human body detection device, judgment means；

Fig. 3 is the circuit connection diagram of suggestion device；

Fig. 4 is the circuit connection diagram of time set, control device.

In figure：1, detection device is opened and closed；2, temperature-detecting device；3, voltage comparator device；4, judgment means；5, signal is put Big device；6, temperature reference circuit；7, voltage comparator circuit；8, control device；9, human body detection device；10, suggestion device； 11, light prompt circuit；12, auditory tone cues electric circuit；13, time set；15, time adjustment circuit；16, timing circuit；17, it cuts Change portion；18, illumination region.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing.

As shown in Figure 1, a kind of concrete mixer disclosed in the present embodiment, including be used to whether detect concrete mixer It is in running order and export and open and close the keying detection device 1 of detection signal, be set on the motor of concrete mixer and coupling Keying detection device 1 is connected to receive keying detection signal for the temperature of detection motor and export corresponding temperature detection letter Number temperature-detecting device 2, be preset with temperature reference signal and be coupled to temperature-detecting device 2 to receive temperature detection signal simultaneously Temperature detection signal and temperature reference signal are compared and the voltage comparator device of output voltage comparison signal 3, are coupled to Voltage comparator device 3 is with receiving voltage comparison signal and exports the human body detection device 9 of human testing signal, is coupled to human body inspection It surveys device 9 and judges the judgment means 4 of signal to receive the output of human testing signal, is coupled to judgment means 4 to receive judgement letter Number and in response to judging signal to realize the suggestion device 10 of prompt；Detect that the switch of equipment is in when opening and closing detection device 1 Opening state and temperature less than normal work temperature when and judgment means 4 judge someone around concrete mixer when, this When suggestion device 10 prompted.

Open and close detection device 1 including one end be connected to the button SB1 of power supply and one end be connected to button SB1's and another The relay KA1 of one end ground connection, it is controlled by relay KA1 and one end is connected to the switch KA1-3 of power supply, is controlled by relay KA1 and the other end are connected to the switch KA1-2 of thermistor RT, the model HH52P of relay KA1 here.

The course of work of foregoing circuit is as follows：

After by lower button SB1, relay KA1 will be powered conducting at this time, not only can when relay KA1 is connected Trigger switch KA1-1 is closed so that relay KA1 is in the state of conducting for a long time, can also corresponding trigger switch KA1-3 with And switch KA1-2 is in the state being closed.

When switch KA1-3 is in the state being closed, concrete mixer can be made in running order；And as switch KA1- 2 be in closed state when, switch KA1-2 will trigger detection of the temperature-detecting device 2 to temperature at this time.

As shown in Figure 1, temperature-detecting device 2, which includes the resistance R1 of one end ground connection and one end, is connected to resistance R1 and another End is connected to the thermistor RT of switch KA1-2, and thermistor here is NTC types and model NTC3950.

Concrete mixer further includes being set between temperature-detecting device 2 and voltage comparator device 3 to amplify temperature Detect the signal amplifying apparatus 5 of signal.

As shown in Figure 1, resistance R3, normal phase input end that signal amplifying apparatus 5 here, which includes one end, to be grounded are connected to cunning The voltage amplifier A1 of dynamic rheostat RP1, one end is connected to the tie point of thermistor RT and resistance R1 and the other end is connected to The resistance R2 of the inverting input of voltage amplifier A1, the model AD620 of voltage amplifier here.

As shown in Fig. 2, voltage comparator device 3 includes the temperature reference circuit 6 and coupling for output temperature reference signal Be connected to temperature reference circuit 6 and temperature-detecting device 2 with and meanwhile receive temperature reference signal and temperature detection signal and by temperature Reference signal and temperature detection signal are compared and the voltage comparator circuit 7 of output voltage comparison signal.

As shown in Fig. 2, temperature reference circuit 6 is connected to the resistance R4 of power supply including one end and one end is connected to resistance R4 And the slide rheostat RP2 of other end ground connection, voltage comparator circuit 77 here are connected to voltage amplification including inverting input Device A1 and normal phase input end are connected to the voltage comparator A2 of resistance R4 and slide rheostat RP2, voltage comparator here The model LM393 of A2.

As shown in Fig. 2, human body detection device 9 include base stage be connected to voltage comparator A2 output end triode Q1, One end is connected to the relay KM1 of the emitter of triode Q1 and is controlled by switch KM1-2 and one end of relay KM1 It is connected to the pyroelectric sensor of switch KM1-2, the model HC-SR501 of pyroelectric sensor, the model of relay KM1 HH52P。

As shown in Fig. 2, judgment means 4 are connected to the phase inverter of pyroelectric sensor including one end, one end is connected to reverse phase The relay KM2 and one end of device and other end ground connection are connected to pyroelectric sensor and the relay KM3 of other end ground connection, The model HH52P of relay KM2 and relay KM3.

As shown in figure 3, suggestion device 10 includes being coupled to judgment means 4 to judge signal and in response to judging signal to receive Judge signal and in response to judging to believe to realize the light prompt circuit 11 of light prompt and be coupled to judgment means 4 to receive Number to realize the auditory tone cues electric circuit 12 of auditory tone cues.

Auditory tone cues electric circuit 12 is that one end is connected to the loud speaker BL1 for being controlled by switch KM3-1 and other end ground connection.

Light prompt circuit 11 includes being coupled to judgment means 4 to receive the switching part for judging signal and exporting switching signal 17 and switching part 17 is coupled to receive switching signal and realize luminous illumination region 18 in response to switching signal.

Switching part 17 includes the capacitance C1 of one end ground connection, one end is connected to the resistance R10 of capacitance C1, one end is connected to resistance R10 and the other end are connected to the resistance R13 for the switch KM1-1 for being controlled by relay MM1, the 7th foot is connected to resistance R13 and electricity The tie point and the 6th foot, crus secunda of resistance R10 are all connected to 555 timer A4 of the tie point of capacitance C1 and resistance R10, shine Portion 18 include one end be connected to the 8th feet of 555 timer A4 resistance R11, anode be connected to resistance R11 light emitting diode D1, One end is connected to the third foot of 555 timer A4 and resistance R12, the anode of the tie point of light emitting diode D1 are connected to electricity Hinder R12 and the light emitting diode D2 of minus earth.

The course of work of light prompt device 10 is as follows：

When relay MM1 triggering and conductings, the corresponding trigger switch KM1-1 of meeting is in running order, can touch at this time The switching signal that 555 timer A7 interruptions export corresponding high level is sent out, the switching signal of high level is exported in 555 timers When, light emitting diode D1 will not shine since both ends are in high level at this time, and light emitting diode D2 will shine；Instead It can trigger light emitting diode D1 and be in accordingly at this time when 555 timer A7 do not export the switching signal of high level Working condition, and light emitting diode D2 will not be shone due to short circuit, to sum up, be realized the frequency of light prompt device 10 Shwoot light.

As shown in figure 4, concrete mixer further includes being coupled to judgment means 4 to judge signal and export timing to believe to receive Number time set 13, be coupled to time set 13 to receive timing signal and in response to the control device of timing signal 8；When opening Close detection device 1 detect equipment switch in the open state and temperature less than normal work temperature when and judgment means 4 when judging around concrete mixer nobody, and control device 8 controls redundant electrical power and is powered to concrete mixer at this time.

Time set 13 includes being coupled to judgment means 4 to receive the time tune for judging signal and output time Regulate signal Economize on electricity and is coupled to time adjustment circuit 15 with receiving time Regulate signal and exports timing signal to judgment means 4 road 15 Timing circuit 16.

Time adjustment circuit 15 is the slide rheostat RP3 that one end is connected to switch KM1-1, and timing circuit 16 connects for one end It is connected to the capacitance C1 of one end of slide rheostat RP3 and other end ground connection, the capacitance C2 and the 6th foot and the 7th of one end ground connection Foot is connected to the connecting pin of slide rheostat RP3 and capacitance C1 and the 5th foot is connected to the 555 timer A1 of capacitance C2, and 555 is fixed When device A1 the first foot be connected to the connecting pin of capacitance C1 and capacitance C2.

Control device 8 is connected to the triode Q2 of 555 timer A7 including base stage and one end is connected to triode Q2's The relay KM4 of emitter, triode Q2 are NPN type and model S9014, the model HH52P of relay KM4.

Specific operating process is as follows：

After staff presses lower button KA1, relay KA1 is in the state of conducting for a long time at this time, at this time can be simultaneously Trigger the detection of concrete mixer and temperature-detecting device 2 to temperature.

Concrete mixer temperature when normal work is higher compared to the temperature being stopped, and passes through temperature-sensitive here Resistance RT effectively realizes detection to temperature, and with the decline of temperature, the resistance value of thermistor RT will also decline at this time.

When the resistance value of thermistor RT declines, it can cause to load the voltage on resistance R1 at this time accordingly Decline, then pass sequentially through resistance R1, voltage amplifier A1 effectively realizes amplification to temperature detection signal, and specifically puts Big coefficient specifically can change amplification coefficient by changing the parameter of resistance R3 or slide rheostat RP1, resistance R2.

When amplified temperature detection signal is input at voltage comparator A2, voltage comparator A2 by the temperature of benchmark and The temperature detected is compared in the form of a signal, is less than temperature reference signal and if only if the temperature detection signal detected When, voltage comparator A2 will export the voltage comparison signal of high level at this time.

When triode Q1 receives the voltage comparison signal of high level, at this time triode Q1 will triggering and conducting, And then effectively trigger relay KM1 conductings energization is started to work.

When relay KM1 triggerings are powered, switch KM1-2 is in closed state at this time, can pass sequentially through heat at this time Releasing electric transducer, whether someone is detected to surrounding.

When nobody, relay KM2 meeting triggering and conductings, the sounding of loud speaker BL1 meetings at this time, and light prompt circuit 11 It can strobe light emission prompt.

And when someone, relay KM3 can triggering and conducting, at this time by 13 timing of time set after, at this time can phase The trigger triode Q2 conductings answered, meeting trigger relay KM4 conductings, when relay KM4 is connected, lay at this time accordingly Power supply can charge to concrete mixer.

To sum up, by above-mentioned setting, effectively realize when under concrete mixer open state be work when and Staff at the scene when light prompt and auditory tone cues are carried out to staff, and in staff not at the scene one After the section time, redundant electrical power can be started in time and charged to concrete mixer.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as all being protected by Patent Law in the right of the utility model.

Claims (8)

1. a kind of concrete mixer, it is characterized in that：It is whether in running order and defeated including being used to detect concrete mixer Go out to open and close the keying detection device (1) of detection signal, be set on the motor of concrete mixer and is coupled to keying detection dress (1) is set to receive the temperature detection for opening and closing detection signal for the temperature of detection motor and exporting corresponding temperature detection signal Device (2) is preset with temperature reference signal and is coupled to temperature-detecting device (2) to receive temperature detection signal and examine temperature It surveys signal and temperature reference signal is compared and the voltage comparator device of output voltage comparison signal (3), is coupled to voltage ratio It with receiving voltage comparison signal and exports the human body detection device (9) of human testing signal compared with device (3), be coupled to human testing Device (9) with receive human testing signal output judge signal judgment means (4), be coupled to judgment means (4) with reception sentence Break signal and in response to judging signal to realize the suggestion device (10) of prompt；Equipment is detected when opening and closing detection device (1) When switching temperature of the in the open state and temperature less than normal work and judgment means (4) judge around concrete mixer When someone, suggestion device (10) is prompted at this time.

2. a kind of concrete mixer according to claim 1, it is characterized in that：Further include being set to temperature-detecting device (2) to amplify the signal amplifying apparatus (5) of temperature detection signal and between voltage comparator device (3).

3. a kind of concrete mixer according to claim 1, it is characterized in that：The voltage comparator device (3) includes using In output temperature reference signal temperature reference circuit (6) and be coupled to temperature reference circuit (6) and temperature-detecting device (2) To receive temperature reference signal and temperature detection signal simultaneously and be compared temperature reference signal and temperature detection signal simultaneously The voltage comparator circuit (7) of output voltage comparison signal.

4. a kind of concrete mixer according to claim 3, it is characterized in that：The suggestion device (10) includes being coupled to Judgment means (4) with receive judge signal and in response to judge signal with realize light prompt light prompt circuit (11) and It is coupled to judgment means (4) and judges signal and in response to judging signal to realize the auditory tone cues electric circuit of auditory tone cues to receive (12)。

5. a kind of concrete mixer according to claim 4, it is characterized in that：The light prompt circuit (11) includes coupling Be connected to judgment means (4) with receive judge signal and export the switching part (17) of switching signal and be coupled to switching part (17) with Receive switching signal and in response to switching signal to realize luminous illumination region (18).

6. a kind of concrete mixer according to claim 1, it is characterized in that：Further include be coupled to judgment means (4) with Reception judges signal and exports the time set (13) of timing signal, is coupled to time set (13) to receive timing signal and sound It should be in the control device (8) of timing signal；Detect that the switch of equipment is in the open state and temperature when opening and closing detection device (1) Less than normal work temperature when and judgment means (4) judge around concrete mixer nobody when, control device (8) at this time Control redundant electrical power is powered concrete mixer.

7. a kind of concrete mixer according to claim 6, it is characterized in that：The time set (13) includes being coupled to Judgment means (4) judge the time adjustment circuit (15) of signal and output time Regulate signal with reception and are coupled to the time Circuit (15) is adjusted with receiving time Regulate signal and exports timing signal to the timing circuit (16) of judgment means (4).

8. a kind of concrete mixer according to claim 4, it is characterized in that：The auditory tone cues electric circuit (12) is to raise one's voice Device.