CN111729753B - Automatic recovery device for hydraulic roller press closed car - Google Patents
Automatic recovery device for hydraulic roller press closed car Download PDFInfo
- Publication number
- CN111729753B CN111729753B CN202010520202.4A CN202010520202A CN111729753B CN 111729753 B CN111729753 B CN 111729753B CN 202010520202 A CN202010520202 A CN 202010520202A CN 111729753 B CN111729753 B CN 111729753B
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- signal input
- input port
- hydraulic
- control signal
- control unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
Abstract
The utility model provides a hydraulic roller press stifled car automatic recovery device, including programmable control unit, programmable control unit is equipped with signal input interface and instruction output interface, the signal input interface connection of hydraulic roller press's running roller motor overload signal output port and programmable control unit, hydraulic system opens and stops control signal input port, pressure release valve control signal input port, hydraulic system, running roller motor start control signal input port and programmable control unit's instruction output interface connection. The device's advantage can be met automatic troubleshooting behind the stifled car incident at hydraulic pressure roller press, and the automatic recovery hydraulic pressure roller press is to normal condition, and the recovery process does not need artifical the participation, and recovery time is short, has avoided manual operation to waste time and energy still the shortcoming of making mistakes easily, does not need artifical nurse, saves the human cost.
Description
Technical Field
The invention relates to a control technology of a hydraulic roller press, in particular to a device for controlling the hydraulic roller press to automatically recover after being closed.
Background
The hydraulic roller press adopts the working principle that two rotating rollers are utilized to extrude and crush materials extruded between the two rollers, wherein one roller is provided with radial pressure by a hydraulic system and can move in a reciprocating manner in a radial direction.
When the hydraulic roller press works, the hydraulic roller press can often encounter the vehicle-stopping event that the roller extrusion range is too large, the pressure of a hydraulic system is multiplied, and the motor driving the roller to rotate is too heavy to trip because of the emergency situation of materials. The existing hydraulic roller press can only be restored manually after meeting a vehicle closing event. The work of the hydraulic roller press is resumed by a worker performing a series of operations in a certain order. The manual recovery not only has complex operation and slow recovery time, but also is easy to make mistakes, and also needs manual care, thus the labor cost is higher.
Disclosure of Invention
The invention aims to provide an automatic recovery device for a hydraulic roller press blocked car, which can automatically complete the recovery work when the hydraulic roller press is blocked.
The invention is realized by the following steps: the automatic recovery device for the closed car of the hydraulic roller press comprises an overload signal output port of a roller motor of the hydraulic roller press, a start-stop control signal input port of a feeding mechanism of the hydraulic roller press, a pressure release valve control signal input port of a hydraulic system of the hydraulic roller press, a start-stop control signal input port of the hydraulic system of the hydraulic roller press and a start-stop control signal input port of a roller motor of the hydraulic roller press.
The working principle of the device is that when the hydraulic roller press is subjected to a vehicle-closing event, the roller motor stops rotating due to overload, and an overload signal is output from an overload signal output port of the roller motor; after the signal input interface of the programmable control unit receives the overload signal, the following instructions are sent out through the instruction output interface: 1. sending a stop signal to a start-stop control signal input port of the feeding mechanism to stop the feeding mechanism; 2. sending a pressure relief signal to a pressure relief valve control signal input port of the hydraulic system to open the pressure relief valve so as to relieve the pressure between the two rollers; 3. and sending a stop signal to a start-stop control signal input port of the hydraulic system to stop an oil pump of the hydraulic system. The above 3 instructions can be issued simultaneously or at different times. After the above 3 instructions are sent out, the programmable control unit delays for a period of time to wait for the pressure of the hydraulic system to drop. Then, the programmable control unit sends out the following instructions: 4. and outputting a starting signal to a starting control signal input port of the roller motor to enable the roller motor which stops rotating before to recover rotating. After the rollers rotate for a period of time to enable the materials clamped between the two rollers to fall, the programmable control unit sends out the following instructions again: 5. sending a signal for stopping pressure relief to a pressure relief valve control signal input port of the hydraulic system to enable the pressure relief valve to recover a closed state; 6. and sending a starting signal to a starting and stopping control signal input port of the hydraulic system to enable an oil pump of the hydraulic system to recover to work. After the 5 th instruction and the 6 th instruction are sent out, the programmable control unit delays for a period of time to wait for the pressure of the hydraulic system to recover to the pressure required by normal operation. Then, the programmable control unit sends out the following instructions: 7. and sending a starting signal to a starting and stopping control signal input port of the feeding mechanism to enable the feeding mechanism to recover to work. At this point, the hydraulic roller press is completely restored to a normal working state.
The invention has the advantages that the hydraulic roller press can automatically remove the fault after meeting the vehicle blocking event, and automatically recover the hydraulic roller press to the normal working state, the whole recovery process does not need manual participation, the recovery time is short, the defects of time and labor waste and easy error caused by manual operation are avoided, manual nursing is not needed, and the labor cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention is described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, the automatic blank recovery device of the hydraulic roller press comprises an overload signal output port 01 of a roller motor of the hydraulic roller press, a start-stop control signal input port 02 of a feeding mechanism of the hydraulic roller press, a pressure release valve control signal input port 03 of a hydraulic system of the hydraulic roller press, a start-stop control signal input port 04 of the hydraulic system of the hydraulic roller press, and a start-up control signal input port 05 of the roller motor of the hydraulic roller press. In particular, the automatic recovery device also comprises a programmable control unit 06, and the programmable control unit 06 is provided with a signal input interface 07 and a command output interface 08. The roller motor overload signal output port 01 is connected with a signal input interface 07 of the programmable control unit 06. The start-stop control signal input port 02 of the feeding mechanism and the various control signal input ports of the hydraulic roller press are connected with an instruction output interface 08 of the programmable control unit 06.
In the present invention, the programmable control unit 06 may be, for example, a PLC controller, or a single chip microcomputer. The signal type received by the signal input interface 07 of the programmable control unit may be, for example, high or low of a level, or on or off of a switch. The type of the command signal sent by the command output interface 08 of the programmable control unit may be, for example, a level, a current or a voltage with a certain output power and capable of driving a certain liability, or an on/off state of a switch.
In the invention, the roller motor overload signal output port 01 can be, for example, a mechanical switch linked with a contactor of a roller motor of a hydraulic roller press, when the contactor is normally closed, the mechanical switch is switched on, when the contactor is tripped, the mechanical switch is switched off, the on-off state of the mechanical switch is used as a signal for judging whether the roller motor is overloaded, and when the mechanical switch is switched off, the signal for judging whether the roller motor is overloaded is sent. For another example, the roller motor overload signal output port 01 may also be a voltage sensor connected in parallel with an output electrode of a contactor of the roller motor, when the contactor is normally closed, the output electrode of the contactor has a voltage, when the contactor trips, the output electrode of the contactor has no voltage, the voltage of the output electrode of the contactor sensed by the voltage sensor is used as a signal whether the roller motor is overloaded, and when the output electrode of the contactor sensed by the voltage sensor is zero, the signal indicating that the roller motor is overloaded is sent. For another example, the roller motor overload signal output port 01 may also be an overload signal output port of a frequency converter, the frequency converter serves as a power supply of the roller motor, when the current of the roller motor reaches an overload current, the frequency converter automatically stops supplying power to the roller motor, and simultaneously, an overload signal of the roller motor is sent from the overload signal output port of the frequency converter. The type of overload signal may be high or low level or on or off of a switch.
In the present invention, the start-stop control signal input port 02 of the feeding mechanism may be, for example, a contactor serving as a power switch of the feeding mechanism, and when the contactor receives a high level signal, the contactor is turned on and the feeding mechanism operates, and when the contactor receives a low level signal, the contactor is turned off and the feeding mechanism stops operating. For another example, the start-stop control signal input port 02 of the feeding mechanism may also be a start port of a frequency converter, and the frequency converter is used as a power supply of the feeding mechanism. And when the starting port of the frequency converter receives the starting signal, the frequency converter supplies power to the feeding mechanism. The type of the starting signal of the frequency converter can be high or low of the level or the on or off of a switch.
In the present invention, the pressure relief valve control signal input port 03 may be, for example, an electrically controlled pressure relief valve, which is opened when the electrically controlled pressure relief valve receives a high level signal, and closed when the electrically controlled pressure relief valve receives a low level signal.
In the present invention, the start-stop control signal input port 04 of the hydraulic system may be, for example, a contactor of an oil pump motor of the hydraulic system, when the contactor receives a high level signal, the contactor is turned on, the oil pump motor is powered on to operate, and when the contactor receives a low level signal, the contactor is turned off, and the oil pump motor is powered off to stop operating.
In the present invention, the start control signal input port 05 of the roller motor may be, for example, a control port of a contactor of the roller motor. When the control port of the contactor is at a high level, the contactor is automatically switched on. For another example, the start control signal input port 05 of the roller motor may also be a start port of a frequency converter, and the frequency converter serves as a power supply of the roller motor. When the starting port of the frequency converter receives the starting signal, the frequency converter supplies power to the roller motor. The type of the starting signal of the frequency converter can be high or low of the level or the on or off of a switch.
The working principle of the device is described below with reference to the accompanying drawings. When the hydraulic roller press is subjected to a vehicle stop event, a contactor of the roller motor trips, or a frequency converter serving as a power supply of the roller motor stops supplying power to the motor, the roller motor stops rotating, an overload signal output port 01 of the roller motor outputs an overload signal to a signal input interface 07 of a programmable control unit 06, and a program in the programmable control unit 06 sends the following instructions through an instruction output interface 08 after receiving the signal: 1. sending a stop signal to a start-stop control signal input port 02 of the feeding mechanism to stop the feeding mechanism; 2. sending a pressure relief signal to a pressure relief valve control signal input port 03 of the hydraulic system to open the pressure relief valve and relieve the pressure between the two rollers; 3. and sending a stop signal to a start-stop control signal input port 04 of the hydraulic system to stop an oil pump of the hydraulic system. The above 3 instructions can be issued simultaneously or sequentially. After the above 3 commands are issued, the programmable control unit 06 delays for a period of time to wait for the pressure of the hydraulic system to drop. Subsequently, the programmable control unit 06 issues the following command again: 4. and outputting a starting signal to a starting control signal input port 05 of the roller motor to enable the previously tripped contactor to recover to be switched on, or enabling a frequency converter serving as a power supply of the roller motor to recover to supply power to the roller motor, and enabling the roller motor to recover to rotate. After the rollers rotate for a period of time to enable the materials clamped between the two rollers to fall, the programmable control unit 06 sends out the following instructions again: 5. sending a signal for stopping pressure relief to a pressure relief valve control signal input port 03 of the hydraulic system to enable the pressure relief valve to recover a closed state; 6. and sending a starting signal to a start-stop control signal input port 04 of the hydraulic system to enable an oil pump of the hydraulic system to recover to work. After the above 5 th and 6 th commands are issued, the programmable control unit 06 delays for a period of time to wait for the pressure of the hydraulic system to return to the pressure required for normal operation. Subsequently, the programmable control unit 06 issues the following command again: 7. and sending a starting signal to a starting and stopping control signal input port 02 of the feeding mechanism to enable the feeding mechanism to recover to work. At this point, the hydraulic roller press is completely restored to a normal working state.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The protection scope of the present invention should be subject to the appended claims.
Claims (2)
1. Hydraulic pressure roller press stifle automatic recovery device, including the running roller motor overload signal output port of hydraulic pressure roller press, the feed mechanism of hydraulic pressure roller press opens and stops control signal input port, the hydraulic system's of hydraulic pressure roller press relief valve control signal input port, the hydraulic system's of hydraulic pressure roller press opens and stops control signal input port, the start control signal input port of the running roller motor of hydraulic pressure roller press, characterized by: the feeding mechanism is characterized by further comprising a programmable control unit, the programmable control unit is provided with a signal input interface and an instruction output interface, the overload signal output port of the roller motor is connected with the signal input interface of the programmable control unit, and the start-stop control signal input port of the feeding mechanism and the various control signal input ports of the hydraulic roller press are connected with the instruction output interface of the programmable control unit;
when the signal input interface of the programmable control unit receives the overload signal output by the overload signal output port of the roller motor, the programmable control unit sends the following instructions through the instruction output interface: 1. sending a shutdown signal to a start-stop control signal input port of the feeding mechanism; 2. sending a pressure relief signal to a pressure relief valve control signal input port of the hydraulic system; 3. sending a shutdown signal to a start-stop control signal input port of the hydraulic system;
delaying for a period of time after the programmable control unit sends the above 3 instructions, and sending the following instructions after the pressure of the hydraulic system is reduced: 4. outputting a starting signal to a starting control signal input port of the roller motor;
after the roller wheel resumes rotating for a period of time, the programmable control unit sends out the following instructions again: 5. sending a signal for stopping pressure relief to a pressure relief valve control signal input port of the hydraulic system; 6. sending a starting signal to a starting and stopping control signal input port of the hydraulic system;
and after the pressure of the hydraulic system is restored to the pressure required by normal work, the programmable control unit sends a starting signal to the start-stop control signal input port of the feeding mechanism.
2. The method for automatically recovering the closed car of the hydraulic roller press is characterized by comprising the following steps: the hydraulic roller press stuffer automatic recovery device according to claim 1, wherein after a hydraulic roller press stuffer event occurs, the signal input interface of the programmable control unit receives an overload signal output by the overload signal output port of the roller motor, and then the programmable control unit sends out the following command through the command output interface: 1. sending a stop signal to a start-stop control signal input port of the feeding mechanism to stop the feeding mechanism; 2. sending a pressure relief signal to a pressure relief valve control signal input port of the hydraulic system to open the pressure relief valve so as to relieve the pressure between the two rollers; 3. sending a stop signal to a start-stop control signal input port of the hydraulic system to stop an oil pump of the hydraulic system;
the programmable control unit delays for a period of time after sending the above 3 instructions, and sends the following instructions after the pressure of the hydraulic system is reduced: 4. outputting a starting signal to a starting control signal input port of the roller motor to enable the roller motor to recover to rotate;
after the rollers rotate for a period of time again to enable the materials clamped between the two rollers to fall off, the programmable control unit sends out the following instructions again: 5. sending a signal for stopping pressure relief to a pressure relief valve control signal input port of the hydraulic system to enable the pressure relief valve to recover a closed state; 6. sending a starting signal to a starting and stopping control signal input port of the hydraulic system to enable an oil pump of the hydraulic system to recover to work;
and after the pressure of the hydraulic system is recovered to the pressure required by normal work, the programmable control unit sends a starting signal to a starting and stopping control signal input port of the feeding mechanism to enable the feeding mechanism to recover work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520202.4A CN111729753B (en) | 2020-06-09 | 2020-06-09 | Automatic recovery device for hydraulic roller press closed car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520202.4A CN111729753B (en) | 2020-06-09 | 2020-06-09 | Automatic recovery device for hydraulic roller press closed car |
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| CN111729753A CN111729753A (en) | 2020-10-02 |
| CN111729753B true CN111729753B (en) | 2022-02-22 |
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| CN202010520202.4A Active CN111729753B (en) | 2020-06-09 | 2020-06-09 | Automatic recovery device for hydraulic roller press closed car |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29616319U1 (en) * | 1996-09-19 | 1996-12-12 | Stroeer Martin | Roll crusher |
| AU2006200671A1 (en) * | 1999-12-23 | 2006-03-16 | Mobius Technologies, Inc. | Polymeric foam processing |
| CN101745457A (en) * | 2008-12-12 | 2010-06-23 | 上海建设路桥机械设备有限公司 | Fuzzy control system and control method for gear tooth type crusher |
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| CN202590945U (en) * | 2012-05-24 | 2012-12-12 | 绿友机械集团股份有限公司 | Electric branch and leave crusher with automatic control system |
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| CN111729753A (en) | 2020-10-02 |
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