CN113003467A - Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill - Google Patents
Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill Download PDFInfo
- Publication number
- CN113003467A CN113003467A CN202110385693.0A CN202110385693A CN113003467A CN 113003467 A CN113003467 A CN 113003467A CN 202110385693 A CN202110385693 A CN 202110385693A CN 113003467 A CN113003467 A CN 113003467A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- rubber
- plastic spring
- coal mill
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/52—Pressure control characterised by the type of actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
- F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a hydraulic control device and a method for installing a rubber and plastic spring damping device of a large coal mill, which are provided with a PC (personal computer) and a lower computer, wherein the lower computer is provided with a pressure sensor, an STM (serial number transfer) series microcontroller and a data communication module, the pressure sensor is connected with an STM32 microcontroller through an SPI (serial number transfer) and is connected with the communication module through a serial port, the communication module is in data communication with the PC through a Scoket mode, the pressure sensor monitors the pressure in real time and transmits the pressure to the PC through the data communication module, the PC sends a control command according to an algorithm and transmits the control command to an STM32 microcontroller, the STM32 microcontroller executes a command to control a proportional speed regulating valve to regulate the flow, the PC and the lower computer control an eight-cylinder hydraulic jack lifting large coal mill, so that the rubber and plastic spring can be quickly and safely installed and maintained, the manpower is reduced, and the safety and the reliability are realized.
Description
Technical Field
The invention relates to the technical field of damping systems, in particular to a hydraulic control device and method for mounting a rubber and plastic spring damping device of a large coal mill.
Background
In recent years, large coal mills are increasingly applied in the field of blast furnace coal injection, but have a certain gap compared with foreign countries, which is mainly reflected in that the large coal mills generate random violent vibration and noise, which have great influence on foundation damage, mill life and environmental noise.
The bottleneck problem is mainly caused by the fact that the distribution area of the raw coal particles is wide, the large particles and the massive coal gangue account for about 10 percent and are randomly distributed, and the base generates severe vibration and noise.
At present, the damping scheme of the domestic large coal mill comprises the construction of a large reinforced concrete deep foundation, a spring damper or a vibration isolation support. The reinforced concrete deep foundation has a small damping effect, and is mainly used for reinforcing a large coal mill; the spring damper is the most common damping mode, is simple to mount, can adjust the height and the level according to actual needs, can effectively isolate the vibration of a large coal mill base, and protects and prolongs the service life of the large coal mill base, but the large coal mill is heavy by hundreds of tons or even thousands of tons, so that the mounting is difficult, the spring is easy to wear, the service life is reduced, and frequent replacement of the spring is difficult, and the production efficiency is influenced; the shock absorption effect of shock insulation support is better a lot than the spring, but the machine all relies on the support shock insulation with being connected of ground, and the installation is more difficult, and this causes the influence to the security and the stability of machine.
In addition, the coal mill system is a complex nonlinear system, the amplitude, noise and load of the coal mill change constantly in the working process, the total load of the coal mill during working is as high as hundreds of thousands of tons, and the traditional coal mill base damping method cannot meet the complex situation. Therefore, a rubber-plastic spring with high damping, high strength and high elasticity is developed and used for realizing the damping of the base of the coal mill so as to solve the bottleneck.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a hydraulic control device and a hydraulic control method for mounting a rubber-plastic spring damping device of a large coal mill.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the hydraulic control device for mounting the rubber-plastic spring damping device of the large coal mill comprises a rubber-plastic spring damping structure, a hydraulic jack structure and a real-time detection control system, wherein the rubber-plastic spring damping structure comprises a fixed support, a lower base, a rubber-plastic spring and an upper base, the lower base is horizontally fixed on a foundation support column, the rubber-plastic spring consists of a plurality of same fan-shaped rubber-plastic spring parts, and the rubber-plastic spring parts are sequentially adhered in a concentric circle shape to form a circle and are fixed on the lower base;
the jack structure comprises a plurality of hydraulic jack, set up the fixed slot that quantity and hydraulic jack quantity suited on the base down, the fixed slot evenly is in rubber and plastic spring periphery respectively, hydraulic jack location installation is in a fixed slot, go up the base and bond in coal-grinding fuselage bottom, the bottom periphery equipartition of coal-grinding fuselage has the flange, hydraulic jack is located the flange below, hydraulic jack and flange clearance fit, for vibration reservation space, with pipeline intercommunication simultaneous working between the hydraulic jack.
The real-time detection control system is provided with a PC (personal computer) and a lower computer, wherein the lower computer consists of a pressure sensor, a microcontroller and a communication module, the lower computer is responsible for data acquisition, the pressure sensor detects the pressure in each hydraulic jack in real time, the microcontroller receives the information of the pressure sensor and performs data processing, then the information is sent to the communication module, and the communication module sends the information to the PC; the PC writes in an algorithm and a control program, the PC sends out a control command according to a signal matching algorithm transmitted by the lower computer, the microcontroller receives the command to control the proportional speed regulating valve to regulate the flow so as to realize synchronous lifting of the hydraulic jack, and an operation key is arranged on a panel of the PC and used for manually controlling the operation of the hydraulic jack.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the hydraulic jack is an 8-cylinder hydraulic jack.
The hydraulic jack comprises an oil cylinder, an oil filter, a vane pump, a servo motor, a three-position four-way electromagnetic valve, an overflow valve, a proportional speed regulating valve and a hydraulic cylinder, wherein the vane pump and the servo motor are connected on a support through bolts, the vane pump is connected with an output shaft of the servo motor through a coupling, an oil inlet of the vane pump is connected with an oil outlet of the oil filter through a bolt, an oil inlet pipeline of the oil filter is inserted into the bottom of the oil cylinder, an oil outlet of the vane pump is connected to a middle position of the three-position four-way electromagnetic valve through a pipeline, an oil outlet at the left end of the middle position of the three-position four-way electromagnetic valve is respectively connected with the overflow valve and the proportional speed regulating valve through a three-fork pipeline, the proportional speed regulating valve is connected with a rodless cavity of the hydraulic cylinder, a rod cavity of the hydraulic cylinder is connected to the right end of the middle position of the three-position four-way electromagnetic valve, the right end of the middle position.
The microcontroller described above is a microcontroller of the STM32 family.
The hydraulic jack is connected with the flange through a cylindrical pin.
The rubber-plastic spring consists of 16 identical fan-shaped rubber-plastic spring parts.
The operation keys on the panel of the PC comprise a servo motor start key, a three-position four-way valve YA1 and a YA2 start key, wherein the servo motor start key is used for controlling the start and stop of a servo motor, and the three-position four-way valve YA1 and the YA2 start keys are used for controlling the start of the left position and the right position of the three-position four-way valve.
The hydraulic control method of the large coal mill damping rubber-plastic spring comprises the following steps: the servo motor start key and the three-position four-way electromagnetic valve YA1 start key on the PC touch panel are manually pressed in sequence to respectively drive the servo motor to start and the left position of the three-position four-way electromagnetic valve to open, the servo motor drives the vane pump, hydraulic oil enters a loop, the hydraulic oil enters a hydraulic cylinder through a proportional speed regulating valve, a pressure sensor in the hydraulic jack monitors the pressure in real time, the PC controls the proportional speed regulating valve to realize that 8 hydraulic cylinders of the hydraulic jack are simultaneously lifted, a coal pulverizer is driven to lift, and at the moment, a rubber-plastic spring is arranged between an upper base and a lower base; at the moment, a start key of a three-position four-way electromagnetic valve YA2 is pressed, hydraulic oil flows into an oil cylinder, a hydraulic jack drives a coal mill to fall down, and a rubber-plastic spring is in contact with an upper base; after the preparation work is finished, the coal mill starts to convey materials, and the rubber-plastic spring is used for damping the chassis of the coal mill; pressure sensor real-time supervision 8 pneumatic cylinders in rising and descending in-process pressure to transmit to the PC through communication module, because flow error in the process of rising, eight pneumatic cylinders can not ensure the synchronization, and the PC sends the instruction this moment, and lower computer execution command control proportional speed control valve adjusts the flow, ensures that pressure is the same, and the big or small standard of flow adjusts with 8 pneumatic cylinder internal pressure maximums, and the pressure in the other 7 pneumatic cylinders makes pressure and maximum keep unanimous through proportional speed control valve regulation flow.
The invention has the following advantages:
1) the invention provides a large-scale coal mill base damping device of a high-damping, high-strength and high-elasticity rubber-plastic spring, wherein the high-damping, high-strength and high-elasticity rubber-plastic spring is a composite material, the rubber-plastic spring can bear thousands of tons of load, can keep elasticity and has long service life, and the spring can independently provide damping force according to the load.
2) The invention provides an eight-cylinder hydraulic jack which synchronously rises and falls to realize the rising and falling of a large coal mill, which is used for installing and maintaining rubber and plastic springs, and a pressure sensor is arranged in each hydraulic cylinder to detect the pressure in real time, so that the rubber and plastic springs can be quickly, safely and conveniently installed, maintained and replaced when the loads of 8 hydraulic cylinders are the same in the rising process, namely the hydraulic cylinders synchronously rise.
3) The invention provides a synchronous control method for 8 hydraulic cylinder tops, wherein a pressure sensor is installed in a hydraulic cylinder of a hydraulic jack, a lower computer monitors the pressure in real time, and a PC controls each proportional speed regulating valve according to the pressure, so that the pressure in each hydraulic cylinder is the same, and synchronous lifting and falling are realized. The synchronous control system adopts upper and lower computers for control, so that the precision is improved, and the occurrence of safety accidents is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a rubber-plastic spring damping device for a base of a large coal mill, according to the invention;
FIG. 2 is a block diagram of the control system of the present invention;
FIG. 3 is a schematic diagram of the eight cylinder hydraulic jack lift system of the present invention;
FIG. 4 is a flow chart of a control method of the present invention;
fig. 5 is a flow chart of a synchronous control method of the eight-cylinder hydraulic jack.
Wherein the reference numerals are: the device comprises 1-1 parts of foundation support columns, 1-2 parts of lower bases, 1-3 parts of rubber and plastic springs, 1-4 parts of upper bases, 1-5 parts of hydraulic jacks, 1-6 parts of coal grinding machine bodies, 1-61 parts of flanges, 1-7 parts of cylindrical pins, 1-51 parts of oil cylinders, 1-52 parts of oil filters, 1-53 parts of vane pumps, 1-54 parts of servo motors, 1-55 parts of three-position four-way electromagnetic valves, 1-56 parts of overflow valves, 1-57 parts of proportional speed regulating valves, 1-58 parts of hydraulic cylinders, 2-1 parts of lower computers, 2-2 parts of PCs, 2-11 parts of pressure sensors, 2-12 parts of microcontrollers and 2-13.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in figure 1, the hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill comprises a fixed support 1-1, a lower base 1-2, a rubber-plastic spring 1-3, an upper base 1-4 and a hydraulic jack 1-5, wherein the lower base 1-2 is horizontally fixed on a foundation support column 1-1, the rubber-plastic spring 1-3 consists of 16 same fan-shaped rubber-plastic springs, industrial glue is sequentially adhered into a circle in a concentric circle shape and is fixed in a groove of the lower base 1-2, the number of hydraulic cylinders of eight-cylinder synchronous hydraulic jacks 1-5 is 8, the eight-cylinder synchronous hydraulic jacks are connected in parallel and work simultaneously, 8 fixed grooves are formed in the lower base 1-2, the 8 fixed grooves are uniformly distributed on the periphery of the rubber-plastic spring 1-3, the 8 hydraulic cylinders of the eight-cylinder synchronous hydraulic jacks 1-5 are respectively positioned and installed in the 8 fixed grooves, the upper base 1-4 is bonded at the bottom of the coal mill body 1-6, the periphery of the bottom of the coal mill body 1-6 is uniformly provided with flanges 1-61, the eight-cylinder hydraulic jack 1-5 is connected with the flanges 1-61 through cylindrical pins 1-7 to reserve space for vibration, and 8 hydraulic cylinders 1-58 of the eight-cylinder hydraulic jack 1-5 are communicated by pipelines and work simultaneously.
Referring to fig. 3, the eight-cylinder hydraulic jack 1-5 of the invention comprises an oil cylinder 1-51, an oil filter 1-52, a vane pump 1-53, a servo motor 1-54, a three-position four-way electromagnetic valve 1-55, an overflow valve 1-56, a proportional speed control valve 1-57 and a hydraulic cylinder 1-58, wherein the vane pump 1-53 and the servo motor 1-54 are connected on a support through bolts, the vane pump 1-53 is connected with an output shaft of the servo motor 1-54 through a coupler, an oil inlet of the vane pump 1-53 is connected with an oil outlet of the oil filter 1-52 through bolts, an oil inlet pipeline of the oil filter 1-52 is inserted into the bottom of the oil cylinder 1-51, an oil outlet of the vane pump 1-53 is connected to a middle position of the three-position four-way electromagnetic valve 1-55 through a pipeline, and a left end outlet of the middle position The hydraulic system is connected with proportional speed regulating valves 1-57, the proportional speed regulating valves 1-57 are connected with rodless cavities of hydraulic cylinders 1-58, rod cavities of the hydraulic cylinders 1-58 are connected to the right end of the middle position of three-position four-way electromagnetic valves 1-55, the right end of the middle position of the three-position four-way electromagnetic valves 1-55 is connected with oil cylinders 1-51, 8 hydraulic cylinders of eight-cylinder hydraulic jacks 1-5 are connected in parallel, the hydraulic elements are connected with pipelines through threads and are sealed through sealing devices to prevent oil leakage, oil inlets and oil outlets of the hydraulic pumps 1-53 are stably installed, and the PC 2-2 and the lower computer 2-1 control the eight-cylinder hydraulic jacks 1-5 to synchronously lift the large-scale coal mill to conveniently install and maintain rubber and plastic springs 1-3.
Referring to fig. 2, the real-time detection control system is provided with a PC (personal computer) 2-2 and a lower computer 2-1, wherein the lower computer 2-1 consists of a pressure sensor 2-11, an STM32 series microcontroller 2-12 and a communication module 2-13. The lower computer 2-1 is mainly responsible for data acquisition, the pressure sensors 2-11 detect the pressure in 8 hydraulic cylinders 1-58 in the movement of the eight-cylinder hydraulic jack 1-5 in real time, the STM32 series microcontrollers 2-12 perform data processing and send the data to the communication modules 2-13, and then the communication modules 2-13 transmit the data to the PC 2-2 through sockets; the PC 2-2 writes in an algorithm and a control program, the PC 2-2 sends out a control instruction according to a signal matching algorithm transmitted by the lower computer 2-1, and the STM32 microcontroller 2-12 receives the instruction to control the proportional speed regulating valve 1-57 to regulate the flow so as to realize synchronous lifting. The operation keys on the panel of the PC 2-2 comprise a servo motor 1-54 start key, a three-position four-way valve 1-55YA1 and YA2 start key, the servo motor 1-54 start key is used for controlling the start and stop of the servo motor 1-54, and the three-position four-way valve 1-55YA1 and YA2 start keys are used for controlling the start of the left position and the right position of the three-position four-way valve 1-55.
Referring to fig. 4 and 5, the hydraulic control method for mounting the large coal mill base and the foundation damping rubber-plastic spring according to the present application includes the following steps: the method comprises the following steps that a servo motor starting key and a three-position four-way electromagnetic valve YA1 starting key on a PC 2-2 touch panel are manually and sequentially pressed down to respectively drive servo motors 1-54 to start and the left positions of three-position four-way electromagnetic valves 1-55 to open, the servo motors 1-54 drive vane pumps 1-53, hydraulic oil enters a loop, the hydraulic oil enters hydraulic cylinders 1-58 through proportional speed regulating valves 1-57, pressure sensors 2-11 in eight-cylinder hydraulic jacks 1-5 monitor pressure in real time, the PC 2-2 controls the proportional speed regulating valves 1-57 to simultaneously lift 8 hydraulic cylinders of the eight-cylinder hydraulic jacks 1-5 so as to drive a coal pulverizer 3 to lift, and at the moment, rubber and plastic springs 1-3 are arranged between an upper base 1-5 and a lower base 1-4; at the moment, a start key of a three-position four-way electromagnetic valve YA2 is pressed, hydraulic oil flows into the oil cylinders 1-51, the eight-cylinder hydraulic jack 1-5 drives the coal mill 3 to fall down, and the rubber-plastic spring 1-3 is in contact with the upper base 1-5; after the preparation work is finished, the coal mill starts to convey materials, and the rubber-plastic spring has the characteristics of high strength, high damping and high elasticity, can provide damping force of thousands of tons of load changes, and effectively performs chassis shock absorption of the coal mill; the pressure sensors 2-11 monitor the pressure in the 8 hydraulic cylinders 1-58 in real time in the lifting and falling processes and transmit the pressure to the PC 2-2 through the communication modules 2-13, when the eight hydraulic cylinders 1-58 cannot ensure synchronization due to flow errors in the lifting process, the PC 2-2 sends an instruction, the lower computer 2-1 executes a command to control the proportional speed control valves 1-57 to adjust the flow, the pressure is ensured to be the same, the flow standard is adjusted according to the maximum value of the pressure in the 8 hydraulic cylinders, and the pressure in the rest 7 hydraulic cylinders is adjusted through the proportional speed control valves 1-57 to enable the pressure to be consistent with the maximum value.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (8)
1. Hydraulic control device is used in installation of large-scale coal pulverizer rubber and plastic spring damping device, characterized by: comprises a rubber-plastic spring damping structure, a hydraulic jack structure and a real-time detection control system, wherein,
the rubber and plastic spring damping structure comprises a fixed support, a lower base, a rubber and plastic spring and an upper base, wherein the lower base is horizontally fixed on the foundation support column body, and the rubber and plastic spring consists of a plurality of same fan-shaped rubber and plastic spring parts which are sequentially adhered into a circle in a concentric circle shape and fixed on the lower base;
the lifting jack structure consists of a plurality of hydraulic lifting jacks, fixing grooves with the number matched with that of the hydraulic lifting jacks are formed in the lower base, the fixing grooves are uniformly distributed on the periphery of the rubber-plastic spring respectively, the hydraulic lifting jacks are positioned and installed in the fixing grooves, the upper base is bonded to the bottom of the coal grinding machine body, flanges are uniformly distributed on the periphery of the bottom of the coal grinding machine body, the hydraulic lifting jacks are located below the flanges, the hydraulic lifting jacks are in clearance fit with the flanges, a space is reserved for vibration, and the hydraulic lifting jacks are communicated through pipelines and work simultaneously;
the real-time detection control system is provided with a PC (personal computer) and a lower computer, wherein the lower computer consists of a pressure sensor, a microcontroller and a communication module, the lower computer is responsible for data acquisition, the pressure sensor detects the pressure in each hydraulic jack in real time, the microcontroller receives the information of the pressure sensor and performs data processing, and then sends the information to the communication module, and the communication module sends the information to the PC; the PC writes in an algorithm and a control program, the PC sends out a control command according to a signal matching algorithm transmitted by the lower computer, the microcontroller receives the command to control the proportional speed regulating valve to regulate the flow so as to realize synchronous lifting of the hydraulic jack, and an operation key is arranged on a panel of the PC and used for manually controlling the operation of the hydraulic jack.
2. The hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill according to claim 1, wherein the hydraulic control device comprises: the hydraulic jack is an 8-cylinder hydraulic jack.
3. The hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill as claimed in claim 2, wherein: the hydraulic jack comprises an oil cylinder, an oil filter, a vane pump, a servo motor, a three-position four-way electromagnetic valve, an overflow valve, a proportional speed regulating valve and a hydraulic cylinder, wherein the vane pump and the servo motor are connected on a support through bolts, the vane pump is connected with an output shaft of the servo motor through a coupling, an oil inlet of the vane pump is connected with an oil outlet of the oil filter through a bolt, an oil inlet pipeline of the oil filter is inserted into the bottom of the oil cylinder, an oil outlet of the vane pump is connected to a middle position of the three-position four-way electromagnetic valve through a pipeline, an oil outlet at the left end of the middle position of the three-position four-way electromagnetic valve is respectively connected with the overflow valve and the proportional speed regulating valve through a three-fork pipeline, the proportional speed regulating valve is connected with a rodless cavity of the hydraulic cylinder, a rod cavity of the hydraulic cylinder is connected to the right end of the middle position of the three-position four-way electromagnetic valve, the right end of the middle position.
4. The hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill according to claim 3, wherein the hydraulic control device comprises: the microcontroller is an STM32 series microcontroller.
5. The hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill as claimed in claim 4, wherein: the hydraulic jack is connected with the flange through a cylindrical pin.
6. The hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill as claimed in claim 5, wherein: the rubber-plastic spring consists of 16 same fan-shaped rubber-plastic spring parts.
7. The hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill as claimed in claim 6, wherein: the operation keys on the panel of the PC comprise a servo motor start key, a three-position four-way valve YA1 and a YA2 start key, the servo motor start key is used for controlling the start and stop of the servo motor, and the three-position four-way valve YA1 and the YA2 start key are used for controlling the start of the left position and the right position of the three-position four-way valve.
8. The control method of the hydraulic control device for installing the rubber-plastic spring damping device of the large coal mill as claimed in claim 7, characterized in that: the method comprises the following steps: the servo motor start key and the three-position four-way electromagnetic valve YA1 start key on the PC touch panel are manually pressed in sequence to respectively drive the servo motor to start and the left position of the three-position four-way electromagnetic valve to open, the servo motor drives the vane pump, hydraulic oil enters a loop, the hydraulic oil enters a hydraulic cylinder through a proportional speed regulating valve, a pressure sensor in the hydraulic jack monitors the pressure in real time, the PC controls the proportional speed regulating valve to realize that 8 hydraulic cylinders of the hydraulic jack are simultaneously lifted, a coal pulverizer is driven to lift, and at the moment, a rubber-plastic spring is arranged between an upper base and a lower base; at the moment, a start key of a three-position four-way electromagnetic valve YA2 is pressed, hydraulic oil flows into an oil cylinder, a hydraulic jack drives a coal mill to fall down, and a rubber-plastic spring is in contact with an upper base; after the preparation work is finished, the coal mill starts to convey materials, and the rubber-plastic spring is used for damping the chassis of the coal mill; pressure sensor real-time supervision 8 pneumatic cylinders in rising and descending in-process pressure to transmit to the PC through communication module, because flow error in the process of rising, eight pneumatic cylinders can not ensure the synchronization, and the PC sends the instruction this moment, and lower computer execution command control proportional speed control valve adjusts the flow, ensures that pressure is the same, and the big or small standard of flow adjusts with 8 pneumatic cylinder internal pressure maximums, and the pressure in the other 7 pneumatic cylinders makes pressure and maximum keep unanimous through proportional speed control valve regulation flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110385693.0A CN113003467A (en) | 2021-04-10 | 2021-04-10 | Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110385693.0A CN113003467A (en) | 2021-04-10 | 2021-04-10 | Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113003467A true CN113003467A (en) | 2021-06-22 |
Family
ID=76388169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110385693.0A Pending CN113003467A (en) | 2021-04-10 | 2021-04-10 | Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113003467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775823A (en) * | 2022-04-25 | 2022-07-22 | 上海强荣建设集团有限公司 | Building shock isolation device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079298A (en) * | 2010-12-28 | 2011-06-01 | 三一重工股份有限公司 | Mobile engineering machine and control system of support leg thereof |
| CN201890108U (en) * | 2010-11-08 | 2011-07-06 | 湖北三江航天万山特种车辆有限公司 | Proportional synchronous lifting system |
| CN103711737A (en) * | 2013-12-17 | 2014-04-09 | 天津大学 | Structure for controlling hydraulic lift shifting process and state of large-scale structures |
| CN104528582A (en) * | 2014-12-26 | 2015-04-22 | 柳州欧维姆机械股份有限公司 | Intelligent separate control type hydraulic synchronous jacking system and method for replacing bridge support through same |
| CN208281249U (en) * | 2018-04-24 | 2018-12-25 | 华北电力大学 | A kind of supercritical water noise reduction damping device |
| CN210113413U (en) * | 2019-06-27 | 2020-02-25 | 王艳宜 | Mining machinery vibration damping mount |
| CN210994583U (en) * | 2019-10-25 | 2020-07-14 | 弥勒羚羊能源有限公司 | Novel lining plate of vertical coal mill |
| CN112206875A (en) * | 2020-09-02 | 2021-01-12 | 泉州市泉润吉明科技有限公司 | Coal pulverizer for thermal power plant |
| CN212882727U (en) * | 2020-07-27 | 2021-04-06 | 涿鹿金隅水泥有限公司 | Coal pulverizer with ceramic composite structure |
-
2021
- 2021-04-10 CN CN202110385693.0A patent/CN113003467A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201890108U (en) * | 2010-11-08 | 2011-07-06 | 湖北三江航天万山特种车辆有限公司 | Proportional synchronous lifting system |
| CN102079298A (en) * | 2010-12-28 | 2011-06-01 | 三一重工股份有限公司 | Mobile engineering machine and control system of support leg thereof |
| CN103711737A (en) * | 2013-12-17 | 2014-04-09 | 天津大学 | Structure for controlling hydraulic lift shifting process and state of large-scale structures |
| CN104528582A (en) * | 2014-12-26 | 2015-04-22 | 柳州欧维姆机械股份有限公司 | Intelligent separate control type hydraulic synchronous jacking system and method for replacing bridge support through same |
| CN208281249U (en) * | 2018-04-24 | 2018-12-25 | 华北电力大学 | A kind of supercritical water noise reduction damping device |
| CN210113413U (en) * | 2019-06-27 | 2020-02-25 | 王艳宜 | Mining machinery vibration damping mount |
| CN210994583U (en) * | 2019-10-25 | 2020-07-14 | 弥勒羚羊能源有限公司 | Novel lining plate of vertical coal mill |
| CN212882727U (en) * | 2020-07-27 | 2021-04-06 | 涿鹿金隅水泥有限公司 | Coal pulverizer with ceramic composite structure |
| CN112206875A (en) * | 2020-09-02 | 2021-01-12 | 泉州市泉润吉明科技有限公司 | Coal pulverizer for thermal power plant |
Non-Patent Citations (2)
| Title |
|---|
| 王连军: "SoundPLAN在噪声预测中的技巧及存在的问题", 《北方环境》 * |
| 韩德仁等: "耐高温磨煤机橡胶衬里的研制及应用", 《腐蚀科学与防护技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775823A (en) * | 2022-04-25 | 2022-07-22 | 上海强荣建设集团有限公司 | Building shock isolation device |
| CN114775823B (en) * | 2022-04-25 | 2024-03-26 | 上海强荣建设集团有限公司 | Building shock insulation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110759244B (en) | Intelligent platform for hoisting, mounting and dismounting in mine, and control system and method | |
| CN113003467A (en) | Hydraulic control device and method for mounting rubber-plastic spring damping device of large coal mill | |
| CN102191937A (en) | Hydraulic cleave-cracking bench vehicle | |
| CN103267697A (en) | Apparatus used for bearing wearing test | |
| CN2926617Y (en) | Movable hydraulic pump station | |
| CN201874918U (en) | Composite hydraulic cylinder and electro-hydraulic proportional lifting system thereof | |
| CN103758800B (en) | The control system of multi-hydraulic-cylinder tunnels mimic experiment porch | |
| CN212671835U (en) | Automatic control device for reversing valve of hydraulic support | |
| CN102616700B (en) | Oil and air hybrid driven lifting control device | |
| CN102040174B (en) | Integral hoisting device and method for large-scale equipment and member | |
| CN206064498U (en) | A kind of easy-to-dismount cornmill Burnisher apparatus | |
| CN110500100B (en) | Electro-hydraulic control system for self-adaptive adjustment of propelling load of shield tunneling machine | |
| CN113062946A (en) | Single-bag gas-liquid linkage intelligent damping device for base of large coal mill and control method of single-bag gas-liquid linkage intelligent damping device | |
| CN209671294U (en) | Mining foundation-free hydraulic support system, function switch module and hydraulic pressure support module | |
| CN108940418A (en) | A kind of jaw crusher width of discharge opening regulating device and jaw crusher | |
| CN109611394B (en) | Mining foundation-free hydraulic support system, function switching module and hydraulic support module | |
| CN201231793Y (en) | Track sectional form connecting pin shaft | |
| CN205446277U (en) | A constant voltage hydraulic pressure thrust control system for mud plunger pump | |
| CN201304632Y (en) | Special working piece for detaching a main shaft of a tailstock on a lathe | |
| CN210753153U (en) | Crusher adjusting system | |
| CN218266567U (en) | Multi-cylinder synchronous jacking system of ultra-large tower crane | |
| CN104441721B (en) | A kind of giant mining tire remanufactures uses tyre surface former | |
| CN220004239U (en) | Hydraulic control loop for quick roller lifting of vertical mill | |
| CN212297099U (en) | Valve block group for double-speed main winch of static pile press and static pile press thereof | |
| CN207932993U (en) | The not contour bearing steel truss structure hoisting slide incremental launching device of large span |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210622 |
|
| RJ01 | Rejection of invention patent application after publication |