CN211250825U - Automatic control loop and control system of concrete stirring device - Google Patents
Automatic control loop and control system of concrete stirring device Download PDFInfo
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- CN211250825U CN211250825U CN201922041805.1U CN201922041805U CN211250825U CN 211250825 U CN211250825 U CN 211250825U CN 201922041805 U CN201922041805 U CN 201922041805U CN 211250825 U CN211250825 U CN 211250825U
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Abstract
The utility model discloses a concrete mixing device automatic control return circuit and control system belongs to engineering machine tool technical field. The utility model discloses a control circuit, including the hydraulic motor of drive hopper screen cloth to and the controller, be provided with the electromagnetic directional valve on hydraulic motor's the hydraulic circuit, and be provided with angle sensor on hydraulic motor's the power output shaft, the electromagnetic directional valve all is connected with the controller electricity with angle sensor, and the main road solenoid valve electricity that sets up on controller and agitating unit's the execution circuit is connected, through the operating condition of controller control main road solenoid valve. The utility model discloses a control circuit combines solenoid directional valve and angle sensor's signal of telecommunication control to carry out the operating condition in return circuit, provides dual guarantee for agitating unit's maintenance, can realize the automated control of hopper screen cloth. The utility model discloses a concrete mixing automatic control system, mechanical control and circuit control combine together and further improved control system's safety and stability nature.
Description
Technical Field
The utility model belongs to the technical field of engineering machine tool, more specifically say, relate to a concrete mixing device automatic control return circuit and control system.
Background
With the high-speed development of national economy, in the fields of house construction, mine support, pit backfill, tunnel construction, road/railway construction, bridge construction and the like, concrete conveying engineering machinery is increasingly applied, and the requirements on the safety and stability of a concrete pumping device are also increasingly high. When an existing concrete pump hopper is cleaned or cleaned of dropped foreign matters, an operator needs to manually open/close a screen, when the screen is opened/closed or the screen is not completely closed, a hydraulic system for driving a stirring motor of a stirring device is prone to misoperation, the stirring device is mistakenly started, and personal injury is prone to being caused if the operator carelessly stretches limbs or other parts into the hopper.
To the relatively poor not enough of current concrete mixing device safety and stability, there has been the relevant technical scheme to disclose among the prior art, like patent application number: 2016203142102, filing date: in 2016, 4, 15 days, the invention and creation names are: the utility model provides a mix thick liquid and irritate safety device, this application discloses a mix thick liquid and irritate safety device, including hydraulic assembly and apron assembly, hydraulic assembly includes stirring motor and the solenoid valve of control stirring motor hydraulic circuit break-make, the apron assembly includes the apron that suits with jar body opening inner end face, establish the valve switch on jar body opening inner end face and establish the clamp plate near jar body opening, the valve switch is connected with the solenoid valve control end, when the apron seals jar body opening, apron bottom surface compresses tightly the valve switch, the top surface is compressed tightly by the clamp plate. When the cover plate is lifted or not covered, the stirring motor cannot work, and therefore personnel injury caused by misoperation of the stirring motor is prevented.
However, slurry mixture and the like exist in the slurry mixing tank, and the accumulation of the slurry mixture and the like near the cover plate can cause the valve switch to be contacted with the electromagnetic valve, so that the hydraulic circuit of the stirring motor is communicated in time, and the danger of personal injury still exists, so that the reliability of controlling the opening and closing of the valve by only depending on the gravity change of the cover plate is greatly reduced. Moreover, the safety protection device in the scheme needs manual opening/closing of the cover plate, the automation degree is low, and operators on a working site easily touch the cover plate by mistake, so that danger is brought to personal safety.
Again as in patent application No.: 2017107067561, filing date: 8, 8 and 17 in 2017, the name of the invention is: the application discloses a movable type concrete spraying manipulator screen safety protection device and a method. The device uses proximity switch angle sensor's output signal as the foundation, judges the perpendicular distance between proximity switch angle sensor's signal face and the proximity switch tablet to the realization is judged the screen cloth open/closed state, combines man-machine interaction unit's the instruction of controlling, exports corresponding screen cloth safety protection control signal, shows the state of this signal in the display screen simultaneously, under the condition of guaranteeing that equipment satisfies various operating modes operation, provides the guarantee for personal safety. According to the safety protection device, the opening/closing state of the screen is judged and the corresponding safety protection control signal is output by combining the control instruction of the human-computer interaction unit, but the control instruction of the human-computer interaction unit is complex, different control instructions need to be input according to the working state of the stirring system, and the control process is not simple.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model provides a concrete mixing device automatic control return circuit combines the operating condition in electromagnetic directional valve and angle sensor's signal of telecommunication control execution return circuit, provides dual guarantee for agitating unit's maintenance, can realize the automated control of hopper screen cloth moreover.
The utility model discloses a concrete mixing automatic control system, mechanical control and circuit control combine together and further improved control system's safety and stability nature.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a concrete mixing device automatic control return circuit, including the hydraulic motor of drive hopper screen cloth to and the controller, be provided with the electromagnetic directional valve on hydraulic motor's the hydraulic circuit, and be provided with angle sensor on hydraulic motor's the power output shaft, the electromagnetic directional valve all is connected with the controller electricity with angle sensor, and the main road solenoid valve electricity that sets up on controller and agitating unit's the execution loop is connected, through the operating condition of controller control main road solenoid valve.
As a further improvement, the hydraulic lock is arranged on the pipeline between the hydraulic motor and the electromagnetic directional valve.
As a further improvement, the angle sensor is mounted on the output shaft of the hopper screen or the output shaft of the hydraulic motor connected with the output shaft.
As a further improvement, the utility model discloses still include the siren, the siren is connected with the angle sensor electricity.
The utility model discloses an automatic control system of a concrete mixing device, which comprises a control loop, an execution loop and an energy loop, wherein the energy loop is provided with a hydraulic pump which is used for driving a mixing motor in the execution loop; and a main path electromagnetic valve is arranged on a hydraulic loop between the hydraulic pump and the stirring motor, the control loop is driven by the hydraulic pump, and a controller in the control loop is electrically connected with the main path electromagnetic valve.
As a further improvement of the present invention, the hydraulic pump is a variable displacement pump or a fixed displacement pump, and the hydraulic pump is driven by a motor.
As a further improvement of the present invention, the main path solenoid valve is a two-position three-way valve or a two-position four-way valve.
As a further improvement, the energy loop further comprises a pressure gauge, which is arranged in parallel on the oil path of the oil outlet of the hydraulic pump.
As a further improvement, the oil-out department of hydraulic pump still is equipped with the overflow valve, overflow valve and hydraulic tank intercommunication.
As a further improvement, the hydraulic circuit of the stirring motor is further provided with a hydraulic on-off valve which is arranged on the lower part of the connecting shaft of the hopper screen.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a concrete mixing device automatic control return circuit, the signal of telecommunication through the electromagnetic directional valve and angle sensor's angle signal synthesizes and judges the screen cloth state to control the operating condition in execution return circuit according to the state that the screen cloth is located, for agitating unit's maintenance provides dual guarantee, effectively avoids the emergence of incident.
(2) The utility model discloses a concrete mixing device automatic control return circuit utilizes hydraulic motor control screen cloth to rotate to set up angle sensor in the drive shaft, the controller is according to the break-make of the angle signal control electromagnetic directional valve that angle sensor detected, and then realizes the control to hydraulic motor, has improved the automated control degree of system, convenient to use.
(3) The utility model discloses a concrete mixing device automatic control system sets up hydraulic pressure on-off valve and main road solenoid valve on the hydraulic circuit of agitator motor, can play the effect of multiple protection, and mechanical control and circuit control combine together and further improved control system's safety and stability nature.
Drawings
Fig. 1 is a schematic diagram of a control loop of the present invention;
fig. 2 is a schematic diagram of the automatic control system of the present invention.
The reference numerals in the schematic drawings illustrate:
100. a control loop; 110. a controller; 111. an electromagnetic directional valve; 112. an angle sensor; 113. a hydraulic motor; 114. hydraulic locking; 115. an alarm;
200. an execution loop; 210. a main path electromagnetic valve; 211. a stirring motor; 212. a hydraulic on-off valve;
300. an energy source circuit; 310. a hydraulic pump; 311. a motor; 312. an overflow valve; 313. and (6) a pressure measuring meter.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
With reference to fig. 1, the automatic control circuit of a concrete mixer of this embodiment includes a hydraulic motor 113 for driving a hopper screen, and a controller 110, a solenoid directional valve 111 is disposed on the hydraulic circuit of the hydraulic motor 113, an angle sensor 112 is disposed on a power output shaft of the hydraulic motor 113, the solenoid directional valve 111 and the angle sensor 112 are both electrically connected to the controller 110, the controller 110 is electrically connected to a main solenoid valve 210 disposed on an execution circuit 200 of the mixer, and the controller 110 controls a working state of the main solenoid valve 210.
Specifically, in this embodiment, an oil inlet of the electromagnetic directional valve 111 is communicated with the main path, an oil outlet of the electromagnetic directional valve 111 is communicated with the hydraulic motor 113, and the electromagnetic directional valve 111 is used for changing the flow direction of hydraulic oil to drive the hydraulic motor 113 to realize forward and reverse rotation, and controlling the opening and closing of the hopper screen. Further, in the embodiment, the angle sensor 112 is mounted on the output shaft of the hopper screen or the output shaft of the hydraulic motor 113 connected to the output shaft, since the hydraulic motor 113 and the screen output shaft are rigidly connected, the rotation angles of the two can be regarded as consistent, and the angle sensor 112 calculates the number of rotation turns of the output shaft of the hopper screen or the output shaft of the hydraulic motor 113 and accurately calculates the opening angle of the hopper screen according to the rotation direction.
In this embodiment, when the execution circuit 200 needs to be maintained, the electromagnetic directional valve 111 is controlled to be powered through a control button of the electromagnetic directional valve 111 or through remote control, so that the hydraulic circuit of the hydraulic motor 113 is communicated, at this time, the hydraulic motor 113 drives the hopper screen to be turned over and opened in the forward direction, the angle sensor 112 can accurately calculate the turning angle of the hopper screen, when the angle signal value output by the angle sensor 112 is small or no angle signal is output, the controller 110 controls the main circuit electromagnetic valve 210 to be closed according to the electric signal of the electromagnetic directional valve 111, and the execution circuit 200 of the stirring device stops stirring.
Along with the gradual increase of the turning angle in the opening process of the hopper screen, when the angle signal value output by the angle sensor 112 is larger than the preset angle value, the controller 110 controls the electromagnetic directional valve 111 to be closed according to the angle signal output by the angle sensor 112, at the moment, the electromagnetic directional valve 111 is powered off, the angle sensor 112 still outputs the angle signal, the controller 110 controls the main electromagnetic valve 210 to be closed according to the angle signal, the execution loop 200 still stops stirring work, at the moment, a worker can safely clean foreign matters or maintain the stirring device, and therefore the personal safety of the worker is guaranteed.
After the maintenance work is finished, the control button of the electromagnetic directional valve 111 or the remote control electromagnetic directional valve 111 is continuously powered on again, the hydraulic circuit of the hydraulic motor 113 is communicated and drives the hopper screen to reversely turn, the turning angle of the hopper screen is smaller than the preset angle value, and the controller 110 controls the main-path electromagnetic valve 210 to be closed according to the power-on signal of the electromagnetic directional valve 111 until the hopper screen is completely closed.
In the embodiment, the electromagnetic directional valve 111 can be controlled to be powered on through remote control, so that the hopper screen is automatically opened, the electromagnetic directional valve 111 is controlled to be powered off according to an angle signal detected by the angle sensor 112, so that the hopper screen is automatically closed, and the controller 110 further controls the working state of the execution loop 200 according to the state of the screen, so that the automatic control of the control loop 100 and the execution loop 200 is realized, and the operation is convenient; in addition, the controller 110 can combine the electric signals of the electromagnetic directional valve 111 and the sensor 112 to keep the hopper screen in an open state during maintenance, thereby providing double guarantee for the maintenance process of the concrete mixing device and effectively avoiding the occurrence of safety accidents.
Example 2
The structure of the automatic control circuit of the concrete mixing device of this embodiment is substantially the same as that of embodiment 1, and further, a hydraulic lock 114 is further disposed on a pipeline between the hydraulic motor 113 and the electromagnetic directional valve 111, and the hydraulic lock 114 is used for locking the circuit of the hydraulic motor 113.
According to the control circuit 100 in embodiment 1, when the opening angle of the screen is greater than the set value, the controller 110 controls the electromagnetic directional valve 111 to lose power, at this time, the controller 110 controls the main electromagnetic valve 210 to close, the stirring device stops working, the hopper screen is kept in an open state, and the operator maintains the stirring device.
However, since the maintenance work of the execution circuit 200 usually lasts for a long time, and sometimes even takes several hours or longer to deal with the failure, in order to prevent the hopper screen from being suddenly closed during the maintenance, in this embodiment, a hydraulic lock 114 is disposed on the pipeline between the hydraulic motor 113 and the electromagnetic directional valve 111, and when the electromagnetic directional valve 111 is closed, the hydraulic lock 114 is used to lock the circuit of the hydraulic motor 113, so that the hopper screen can be effectively prevented from rotating due to the leakage of the hydraulic motor, and the safety performance of the execution circuit 200 can be further improved.
The control circuit 100 of this embodiment can automatically control the opening and closing of the hopper screen, and the staff can operate remotely, in order to make the staff know the screen state in time, the control circuit 100 of this embodiment further includes the alarm 115, and the alarm 115 is electrically connected with the angle sensor 112, and when the angle sensor 112 has an angle signal output, the alarm 115 gives an alarm, and the alarm 115 needs to be installed on the position easy for the staff to perceive, so that the operator can hear or see the sound/light alarm in time.
Example 3
Referring to fig. 2, the automatic control system of the concrete mixer of the present embodiment includes the control circuit 100, the execution circuit 200, and the energy circuit 300, wherein the energy circuit 300 is provided with a motor 311 and a hydraulic pump 310, the execution circuit 200 includes a mixing motor 211, and the motor 311 drives the hydraulic pump 310 to drive the mixing motor 211.
The ground alternating current power supply or the storage battery supplies power to the motor 311, the main path electromagnetic valve 210 and the control loop 100, the starting motor 311 drives the hydraulic pump 310 to rotate, the hydraulic pump 310 sucks oil from the hydraulic oil tank, high-pressure oil is provided for the stirring motor 211 through the communication of the main path electromagnetic valve 210, the stirring motor 211 drives the stirring device to stir concrete, and the motor 311 is an alternating current motor or a direct current motor in the embodiment and is used for driving the hydraulic pump 310 to provide energy for a hydraulic system.
Further, in this embodiment, a hydraulic on-off valve 212 is further disposed on the hydraulic circuit of the mixing motor 211, the hydraulic on-off valve 212 is mounted on the lower portion of the connecting shaft of the hopper screen, and the valve element of the hydraulic on-off valve 212 is pressed down by the gravity of the screen, so as to control the on-off of the hydraulic circuit of the mixing motor 211.
In the embodiment, the working state of the execution loop 200 is controlled by using a mechanical principle, and when the hopper needs to be maintained, the hydraulic on-off valve 212 cuts off the oil path of the stirring motor 211 along with the opening of the hopper screen, so that the stirring motor 211 is controlled to stop working.
In this embodiment, the hydraulic circuit of the automatic control system of the concrete mixing device is set as follows: an oil outlet B of a hydraulic pump 310 in the energy source loop 300 is connected with an oil inlet P of a hydraulic on-off valve 212 in series, an oil outlet A of the hydraulic on-off valve 212 is connected with an oil inlet P of a main path electromagnetic valve 210 to block an oil return port T of the main path electromagnetic valve 210, one oil outlet A of the main path electromagnetic valve 210 is connected with an oil inlet A of a stirring direction of a stirring motor 211, the other oil outlet B of the main path electromagnetic valve 210 is respectively connected with an oil tank and an oil return port B of the stirring motor 211, an oil drain port L of the stirring motor 211 is connected with the oil tank, and the oil paths are connected to form a main path of a. The main solenoid valve 210 is a two-position three-way valve or a two-position four-way valve, and when the main solenoid valve 210 is the two-position four-way valve, an oil return port of the main solenoid valve 210 is blocked.
Further, in this embodiment, an oil inlet of the electromagnetic directional valve 111 in the control circuit 100 is communicated with an oil outlet of the hydraulic pump 310 in the energy circuit 300, the electromagnetic directional valve 111 is a three-position four-way valve, the hydraulic lock 114 is a two-hydraulic control one-way valve, hydraulic oil in the main path enters the control circuit 100 from an oil inlet P of the electromagnetic directional valve 111, an oil return port T of the electromagnetic directional valve 111 is connected with a hydraulic oil tank, two oil outlets a and B of the electromagnetic directional valve 111 are respectively connected with an oil inlet of the hydraulic lock 114, an oil outlet of the hydraulic lock 114 is respectively connected with an oil inlet a and an oil outlet B of the hydraulic motor 113, an oil drain port L of the hydraulic motor 113 is connected with the oil tank, and the motor 311 in the energy circuit 300 drives the hydraulic pump 310 to pump the.
Example 4
The structure of the automatic control system for a concrete mixing device of this embodiment is substantially the same as that of embodiment 3, and further, the energy circuit 300 further includes a pressure gauge 313, and the pressure gauge 313 is disposed on an oil path connected in parallel with an oil outlet of the hydraulic pump 310; an overflow valve 312 is further arranged at the oil outlet of the hydraulic pump 310, and the overflow valve 312 is communicated with a hydraulic oil tank.
The automatic control system of the concrete mixing device in this embodiment includes a hydraulic system of the execution loop 200 and a circuit system of the control loop 100, in this embodiment, working media of the mixing motor 211 of the execution loop 200 and the hydraulic motor 113 of the control loop 100 are both provided by hydraulic oil, an oil supply amount of the hydraulic pump 310 is larger than an oil demand of the system, excess oil flows back to a hydraulic oil tank through an overflow valve 312, the overflow valve 312 is arranged on an oil path in parallel connection with an oil outlet of the hydraulic pump 310 to play a role in controlling and stabilizing an oil source pressure, and the pressure gauge 313 can monitor the pressure at the oil outlet of the hydraulic pump 310, so that a worker can adjust the power of the hydraulic pump 310 in time.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a concrete mixing device automatic control return circuit which characterized in that: including hydraulic motor (113) of drive hopper screen cloth to and controller (110), be provided with solenoid directional valve (111) on the hydraulic circuit of hydraulic motor (113), and be provided with angle sensor (112) on hydraulic motor's (113) power output shaft, solenoid directional valve (111) and angle sensor (112) all are connected with controller (110) electricity, and main road solenoid valve (210) electricity that controller (110) and agitating unit's execution return circuit (200) set up are connected, control the operating condition of main road solenoid valve (210) through controller (110).
2. An automatic control circuit for a concrete mixing plant according to claim 1, characterized in that: and a hydraulic lock (114) is also arranged on a pipeline between the hydraulic motor (113) and the electromagnetic directional valve (111).
3. An automatic control circuit for a concrete mixing plant according to claim 1, characterized in that: the angle sensor (112) is mounted on an output shaft of the hopper screen or an output shaft of the hydraulic motor (113) connected to the output shaft.
4. A concrete mixing apparatus automatic control circuit according to any one of claims 1-3, characterized in that: an alarm (115) is also included, the alarm (115) being electrically connected to the angle sensor (112).
5. The utility model provides a concrete mixing device automatic control system which characterized in that: comprising a control circuit (100) and an implement circuit (200) according to any of claims 1-4, and an energy circuit (300), said energy circuit (300) having a hydraulic pump (310) arranged therein, the hydraulic pump (310) being arranged to drive a mixer motor (211) in the implement circuit (200); a main path electromagnetic valve (210) is arranged on a hydraulic circuit between the hydraulic pump (310) and the stirring motor (211), the control circuit (100) is driven by the hydraulic pump (310), and a controller (110) in the control circuit (100) is electrically connected with the main path electromagnetic valve (210).
6. An automatic control system for a concrete mixing plant according to claim 5, characterized in that: the hydraulic pump (310) is a variable displacement pump or a fixed displacement pump, and the hydraulic pump (310) is driven by a motor (311).
7. An automatic control system for a concrete mixing plant according to claim 5, characterized in that: the main solenoid valve (210) is a two-position three-way valve or a two-position four-way valve.
8. An automatic control system for a concrete mixing plant according to claim 5, characterized in that: the energy source circuit (300) further comprises a pressure measuring meter (313), and the pressure measuring meter (313) is arranged on an oil path of an oil outlet of the hydraulic pump (310) in parallel.
9. An automatic control system for a concrete mixing plant according to claim 6, characterized in that: an oil outlet of the hydraulic pump (310) is further provided with an overflow valve (312), and an oil return port of the overflow valve (312) is communicated with a hydraulic oil tank.
10. An automatic control system for a concrete mixing device according to any one of claims 5-9, characterized in that: and a hydraulic on-off valve (212) is further arranged on a hydraulic loop of the stirring motor (211), and the hydraulic on-off valve (212) is installed on the lower portion of the connecting shaft of the hopper screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922041805.1U CN211250825U (en) | 2019-11-22 | 2019-11-22 | Automatic control loop and control system of concrete stirring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922041805.1U CN211250825U (en) | 2019-11-22 | 2019-11-22 | Automatic control loop and control system of concrete stirring device |
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| CN211250825U true CN211250825U (en) | 2020-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983920A (en) * | 2021-05-20 | 2021-06-18 | 徐州徐工施维英机械有限公司 | Cleaning and stirring integrated valve, cleaning and stirring hydraulic system and concrete pumping equipment |
-
2019
- 2019-11-22 CN CN201922041805.1U patent/CN211250825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983920A (en) * | 2021-05-20 | 2021-06-18 | 徐州徐工施维英机械有限公司 | Cleaning and stirring integrated valve, cleaning and stirring hydraulic system and concrete pumping equipment |
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