CN111396408A - Stroke control device and method for slurry shield crusher - Google Patents
Stroke control device and method for slurry shield crusher Download PDFInfo
- Publication number
- CN111396408A CN111396408A CN202010310405.0A CN202010310405A CN111396408A CN 111396408 A CN111396408 A CN 111396408A CN 202010310405 A CN202010310405 A CN 202010310405A CN 111396408 A CN111396408 A CN 111396408A
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- port
- directional valve
- cylinder
- 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.)
- Granted
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 318
- 239000004575 stone Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- BIYFBWRLDKOYMU-UHFFFAOYSA-N 1-(3,4-dichlorophenyl)-2-(ethylamino)propan-1-one Chemical compound CCNC(C)C(=O)C1=CC=C(Cl)C(Cl)=C1 BIYFBWRLDKOYMU-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000346 nonvolatile oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- 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
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
- G01F9/001—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine with electric, electro-mechanic or electronic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
-
- 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
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in control
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a stroke control device and method of a slurry shield crusher, which comprises an oil tank, an oil cylinder and an oil way control valve block, wherein a first oil port connected with a rodless cavity of the oil cylinder, a second oil port connected with a rod cavity of the oil cylinder and a second oil inlet connected with an outlet of the oil tank are arranged in the oil way control valve block; the second oil inlet is connected with a hydraulic control directional valve through a control oil way, and the hydraulic control directional valve is respectively connected with the input ends of the right oil inlet pipeline and the left oil inlet pipeline; the output end of the right oil inlet pipeline is connected with the first oil port, and the output end of the left oil inlet pipeline is connected with the second oil port; the first oil port is connected with an oil return port of the oil tank through a left oil outlet pipeline, and the second oil port is connected with an oil return port of the oil tank through a right oil outlet pipeline; the hydraulic control directional valve is connected with the second oil inlet; the flow meter is electrically connected with the controller. The invention realizes the real-time detection of the position state of the crusher.
Description
Technical Field
The invention belongs to the technical field of shield machine tunnels, and particularly relates to a stroke control device and method for a slurry shield crusher.
Background
In the construction process of the slurry shield, the stone blocks cut by the cutter head enter the air cushion bin through the slurry door, and are conveniently screened by the grating and enter the circulating system to be taken out of the hole after being crushed by the crusher. Due to the harsh working environment of the crusher, the service life of the crusher system is greatly reduced due to long-term high-pressure high-load operation. Therefore, the opening degree of the crusher needs to be detected to judge whether the crusher needs to switch high pressure for crushing or not, and the frequency of switching high pressure by the crusher is reduced. The existing shield machine generally measures the stroke of an oil cylinder by a method of detecting the position of the oil cylinder through a displacement sensor arranged in the oil cylinder, but the displacement sensor is easy to damage due to the fact that an air cushion bin works badly.
Disclosure of Invention
Aiming at the problems of high-pressure switching frequency and short service life of the existing crusher, the invention provides a stroke control device and method of a slurry shield crusher, which realize the opening control of the slurry shield crusher and the non-contact stroke detection of an oil cylinder of the crusher by measuring the stroke of the oil cylinder.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a stroke control device of a slurry shield crusher comprises an oil tank, an oil cylinder and an oil circuit control valve block, wherein a first oil port, a second oil port and a second oil inlet are arranged in the oil circuit control valve block, the first oil port is communicated with a rodless cavity of the oil cylinder, the second oil inlet is connected with an outlet of the oil tank, the second oil port is connected with a rod cavity of the oil cylinder, and a flow meter is arranged on a connecting pipeline of the second oil port or the first oil port and the oil cylinder; the second oil inlet is respectively connected with the input ends of the right oil inlet pipeline and the left oil inlet pipeline through a control oil way, the output end of the right oil inlet pipeline is connected with the first oil port, and the output end of the left oil inlet pipeline is connected with the second oil port; the first oil port is connected with an oil return port of the oil tank through a left oil outlet pipeline, and the second oil port is connected with an oil return port of the oil tank through a right oil outlet pipeline; the left oil inlet pipeline and the right oil inlet pipeline are respectively provided with a hydraulic control directional valve, and the hydraulic control directional valves are connected with the second oil inlets; the flow meter is electrically connected with the controller, and the controller is electrically connected with the control unit of the crusher.
The right oil inlet pipeline comprises a one-way throttle valve II, and two ends of the one-way throttle valve II are respectively connected with the hydraulic control directional valve and the first oil port; and the right oil outlet pipeline comprises a balance valve II, and two ends of the balance valve II are respectively connected with the second oil port and the oil return port of the oil tank.
The left oil inlet pipeline comprises a one-way throttle valve IV, and two ends of the one-way throttle valve IV are respectively connected with the second oil port B and the hydraulic control directional valve; the left oil outlet pipeline comprises a balance valve I, and two ends of the balance valve I are respectively connected with the first oil port and the oil return port of the oil tank.
The control oil path comprises an electromagnetic directional valve, the electromagnetic directional valve is respectively connected with the hydraulic control directional valve through a one-way throttle valve I and a one-way throttle valve III, and the electromagnetic directional valve is connected with the second oil inlet.
And the left oil outlet pipeline and the right oil outlet pipeline are connected with an oil return port of the oil tank through a safety valve I, and the safety valve I is connected with the electromagnetic directional valve and the hydraulic control directional valve.
A metering cavity is arranged in the middle of the flowmeter, and a pulse amplifier is arranged on the flowmeter; and a rotating mechanism is arranged in the metering cavity, the rotating mechanism is matched with the pulse amplifier, and the pulse amplifier is electrically connected with the controller.
The rotating mechanism comprises a first gear and a second gear which are meshed with each other, and the first gear and the second gear are matched with a probe of the pulse amplifier.
The control unit of the crusher comprises a hydraulic pump, the hydraulic pump is connected with an oil tank, and the hydraulic pump is connected with an oil return port of the oil tank through a safety valve II; and the safety valve II is connected with the second oil inlet through a hydraulic control circuit.
The working method of the invention is as follows: oil in the oil tank enters through a second oil inlet, the left position of an electromagnetic directional valve of the control oil way is electrified, the electromagnetic directional valve is switched to a cross position, meanwhile, the oil is used as control oil and flows to the right side of a hydraulic control directional valve through the cross position, so that the hydraulic control directional valve is switched to a right position, the oil enters a rodless cavity of the oil cylinder through the second oil inlet, the hydraulic control directional valve and a one-way throttle valve II of a right oil inlet pipeline, the oil cylinder extends out, and the oil in a rod cavity of the oil cylinder returns through a balance valve II of a right oil outlet pipeline; oil in the oil tank enters through the second oil inlet, the right position of the electromagnetic directional valve is electrified, the electromagnetic directional valve is switched to the parallel position, meanwhile, the oil serves as control oil and flows to the left side of the hydraulic control directional valve through the parallel position, the hydraulic control directional valve is switched to the left position, the oil enters the rod cavity of the oil cylinder through the second oil inlet, the hydraulic control directional valve, the one-way throttle valve IV and the flow meter of the left oil inlet pipeline, the oil cylinder is recycled, and the oil in the rodless cavity of the oil cylinder returns through the balance valve I of the left oil outlet pipeline.
The control method of the apparatus according to the above, comprising the steps of:
s1, calculating the volume of oil flowing out of the oil cylinder in a corresponding stroke by the controller through counting the integral of the oil flow entering the flow meter in one stroke;
s2, the controller calculates the stroke of the oil cylinder according to the oil volume obtained in the step S1 divided by the cross-sectional area of the oil cylinder;
and S3, the controller calculates a stroke ratio according to the stroke of the oil cylinder obtained in the step S2 and the full stroke amount of the oil cylinder, and judges whether the crusher needs to perform high-pressure crushing according to the stroke ratio.
In step S3, if the stroke ratio of the cylinder is less than 95%, the hydraulic pump of the control cylinder is switched to the high-pressure mode; if the stroke ratio of the cylinder is greater than or equal to 95%, the hydraulic pump performs a low pressure mode.
The invention has the beneficial effects that:
according to the invention, the oil inlet and outlet quantity of the oil cylinder is calculated through the flow meter, the controller calculates the stroke of the oil cylinder of the crusher according to the oil inlet and outlet quantity, and finally the controller judges and controls whether the crusher system needs to perform high-low pressure switching crushing according to the stroke ratio logic of the oil cylinder, so that the real-time detection of the position state of the crusher and the automatic control of the stroke of the slurry shield crusher are realized, the high-frequency composition of high pressure and high flow of the crusher is reduced, the high-pressure switching frequency of the crusher system is reduced, and the service life of the crusher system, especially the service life of a hydraulic hose in an air cushion bin, is greatly prolonged; on the other hand, the reduction of the usage amount of the high-pressure system of the crusher improves the safety performance of the system and reduces the maintenance and use cost of the system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the flow meter.
Fig. 3 is an external view of the flowmeter.
Fig. 4 is a schematic view showing the flow direction of oil when the cylinder is extended.
Fig. 5 is a schematic view showing the flow direction of oil during the recovery of the cylinder.
FIG. 6 is a flow chart of the method of the present invention.
In the figure, 1 is a safety valve I, 2 is an electromagnetic directional valve, 3 is a one-way throttle valve I, 4 is a hydraulic control directional valve, 5 is a balance valve I, 6 is a one-way throttle valve I, 7 is a first pressure sensor, 8 is a second pressure sensor, 9 is a flow meter, 9-1 is an upper cover, 9-2 is a shell, 9-3 is a lower cover, 9-4 is a pulse amplifier, 9-5 is a first gear, 9-6 is a second gear, 9-7 is a first oil hole, 9-8 is a second oil hole, 10 is an oil cylinder, 11 is an oil tank, 12 is a motor, 13 is a one-way throttle valve II, 14 is a hydraulic pump, 15 is a balance valve II, 16 is a one-way throttle valve II, 17 is an electromagnetic ball valve I, 18 is an electromagnetic ball valve II, 19 is a safety valve II, 20 is an overflow valve I, 21 is an overflow valve II, A is a first oil port, and B is a second oil port, p is the second oil inlet, and T is the oil return opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1: a stroke control device of a slurry shield crusher comprises an oil tank 11, an oil cylinder 10 and an oil way control valve block, wherein a first oil port A, a second oil port B and a second oil inlet P are arranged in the oil way control valve block, as shown in figure 1; the first oil port A is communicated with a rodless cavity of the oil cylinder 10, the second oil inlet P is connected with an outlet of the oil tank 11, the oil tank 11 provides an oil source for the oil circuit control valve block and the oil cylinder 10, the second oil port B is connected with a rod cavity of the oil cylinder 10, and a flow meter 9 is arranged on a connecting pipeline of the second oil port B or the first oil port A and the oil cylinder 10; pressure sensors are arranged on oil inlet and outlet pipelines connected with the rod cavity of the oil cylinder 10 and the rodless cavity of the oil cylinder 10, the pressure sensors are connected with a controller, and the high-low pressure state of the rod cavity and the rodless cavity of the oil cylinder 10 can be obtained through the pressure of the first oil port A and the pressure of the second oil port B measured by the pressure sensors; in this embodiment, the flow meter 9 is installed between the second oil port B and the rod chamber of the oil cylinder 10, and is used for measuring the amount of oil flowing into or out of the oil cylinder 10; the second oil inlet P is connected with a hydraulic control directional valve 4 through a control oil way, and the hydraulic control directional valve 4 is respectively connected with the input ends of a right oil inlet pipeline and a left oil inlet pipeline; the oil flows into a control oil path from a second oil inlet P, the control oil path can control the flow of the oil in a left oil inlet pipeline or a right oil inlet pipeline through a left port and a right port of a control hydraulic control directional valve 4, the right oil inlet pipeline provides an oil source for a rodless cavity of the oil cylinder 10, and the oil source is supplied for the extension of a telescopic rod of the oil cylinder 10; the left oil inlet pipeline provides an oil source for a rod cavity of the oil cylinder 10 and supplies oil to the recovery of a telescopic rod of the oil cylinder 10; the hydraulic control directional valve 4 pushes the valve core to move by utilizing the hydraulic force generated by the pressure oil of the control oil path at the end part of the valve core, thereby changing the position of the valve core, reversing the hydraulic control directional valve 4 and further controlling the left oil inlet pipeline or the right oil inlet pipeline.
The output end of the right oil inlet pipeline is connected with the first oil port A, and the output end of the left oil inlet pipeline is connected with the second oil port B; the first oil port A is connected with an oil return port T of the oil tank 11 through a left oil outlet pipeline, and the second oil port B is connected with the oil return port T of the oil tank 11 through a right oil outlet pipeline; the left oil outlet pipeline and the right oil outlet pipeline respectively provide an oil return pipeline connected with the oil tank 11 for the rodless cavity and the rod cavity of the oil cylinder 10, and oil return of the oil cylinder 10 flows back to the oil tank 11 through the left oil outlet pipeline and the right oil outlet pipeline; the hydraulic control directional valve 4 is connected with a second oil inlet P to provide an oil input way for a left oil inlet pipeline and a right oil inlet pipeline; the flow meter 9 is electrically connected with the controller, the controller is electrically connected with the control unit of the crusher, the controller processes the pulse signals of the flow meter 9, and judges the stretching amount of the oil cylinder by identifying the oil amount flowing into the oil cylinder 10, so that the high-pressure mode and the low-pressure mode of the crusher are synchronously controlled to be switched.
The right oil inlet pipeline comprises a one-way throttle valve II6, two ends of the one-way throttle valve II6 are respectively connected with the hydraulic control directional valve 4 and the first oil port A, the one-way throttle valve II6 is in a screwing-dead state at ordinary times, the one-way valve can lock oil in a rodless cavity of the oil cylinder when the oil cylinder 10 does not act, the crusher is stabilized at any position, and the throttle valve can be unscrewed when the oil cylinder 10 breaks down, so that the oil cylinder 10 is decompressed, and maintenance is facilitated; the right oil outlet pipeline comprises a balance valve II15, two ends of the balance valve II15 are respectively connected with the second oil port B and the oil return port T of the oil tank 11, and the balance valve II15 plays a role in pressure regulation of the right oil outlet pipeline between the rod cavity of the oil cylinder 10 and the oil return port T of the oil tank 10.
The left oil inlet pipeline comprises a one-way throttle valve IV16, two ends of the one-way throttle valve IV16 are respectively connected with the second oil port B and the hydraulic control directional valve 4, the one-way throttle valve IV16 is in a screwing-up state at ordinary times, and the one-way valve can lock oil in a rod cavity of the oil cylinder when the oil cylinder 10 does not act, so that the crusher is stabilized at any position; the throttle valve can be unscrewed when the oil cylinder 10 breaks down, so that the oil cylinder 10 is decompressed, and maintenance is facilitated. The one-way throttle valve IV16 is normally in a screw-out state, and the system can be depressurized by unscrewing the one-way throttle valve IV16 only when the oil cylinder 10 fails; the left oil outlet pipeline comprises a balance valve I5, two ends of the balance valve I5 are respectively connected with the first oil port A and the first oil outlet, and the balance valve I5 plays a role in pressure regulation of the left oil outlet pipeline between the rodless cavity of the oil cylinder 10 and the oil return port T of the oil tank 10.
The control oil path comprises an electromagnetic directional valve 2, the electromagnetic directional valve 2 is connected with a hydraulic control directional valve 4 through a one-way throttle valve I3 and a one-way throttle valve III13, the electromagnetic directional valve 2 is connected with a second oil inlet P, when the electromagnetic directional valve 2 is electrified, an electromagnet in the electromagnetic directional valve 2 is electrified to generate suction, and then a valve core is pushed to change the working position of the electromagnetic directional valve 2.
The left oil outlet pipeline and the right oil outlet pipeline are connected with an oil return port T of the oil tank 11 through a safety valve I1, and the safety valve I1 is connected with the electromagnetic directional valve 2 and the hydraulic control directional valve 4. The safety valve I1 is a backpressure valve, when the return pressure is lower, the return air cushion cabin can have larger pressure after oil return, so as to prevent the oil from flowing backwards.
As shown in fig. 2, the flow meter 9 includes an upper cover 9-1, a case 9-2, and a lower cover 9-3, and the upper cover 9-1 and the lower cover 9-3 are connected by the case 9-2; a metering cavity is arranged in the middle of the shell 9-2, and a rotating mechanism is arranged in the metering cavity; the lower cover 9-3 is provided with a pulse amplifier 9-4, the pulse amplifier 9-4 is matched with the rotating mechanism, and the flowing of the oil liquid drives the rotating mechanism to rotate; the pulse amplifier 4 is electrically connected with the controller, and the controller processes the pulse signals received by the pulse amplifier 9-4. As shown in FIG. 3, a first oil hole 9-7 and a second oil hole 9-8 are formed in the upper cover 9-1, and the first oil hole 9-7 and the second oil hole 9-8 are communicated with the metering cavity; the first oil hole 9-7 and the second oil hole 9-8 are respectively connected with a rod cavity of the oil cylinder 10 and the second oil hole B, so that oil can be conveniently transmitted in the flowmeter 9.
The rotating mechanism comprises a first gear 9-5 and a second gear 9-6 which are meshed with each other, the first gear 9-5 and the second gear 9-6 are matched with a probe of the pulse amplifier 9-4, and the two gears and the metering cavity form a fixed oil storage cavity. When oil flows into the metering cavity, the first gear 9-5 and the second gear 9-6 are driven by the oil to rotate in a meshed mode, the number of the rotating gears is scanned by the pulse amplifier 9-4, each tooth generates one pulse, the pulse amplifier 9-4 judges the rotating condition of the rotating mechanism through detecting the number of the pulses, when the rotating mechanism rotates for one circle, the oil flowing through the metering cavity is equal to the volume of the oil storage cavity, the volume of the oil storage cavity is a fixed value, and therefore the oil flowing through the oil cylinder 10 can be detected through the flow meter 9. In addition, an arrow is marked on the flowmeter 9, when the oil cylinder 10 extends out, the oil return direction of the rod cavity is consistent with the direction of the arrow, at the moment, the pulse signal rises, and the numerical value display on the pulse amplifier 9-4 is increased; when the oil cylinder 10 retracts, the rod cavity of the oil cylinder is filled with oil, the flow direction of the oil is opposite to that of an arrow on the flow meter, the pulse signal is reduced, the numerical value display on the pulse amplifier 9-4 is reduced, and therefore the flow direction of the oil can be judged by arranging the flow meter on the oil circuit of the rod cavity.
The control unit of the crusher comprises a hydraulic pump 14, the hydraulic pump 14 is connected with a motor 12, and the motor 12 is used for driving the hydraulic pump 14 to work; the hydraulic pump 14 is connected with an outlet of the oil tank 11, and the hydraulic pump 14 is connected with an oil return pipeline through a safety valve II 19; the safety valve II19 is connected with the second oil inlet P through a hydraulic control circuit. The safety valve II19 plays a role in protecting the pipeline, the setting pressure of the safety valve II19 is higher than the pressure of the pipeline, when the pipeline works normally, the safety valve II19 cannot be opened, and when impact occurs or pressure rise caused by abnormality is larger than the set pressure of the safety valve II19, the safety valve II19 can be opened.
The hydraulic control circuit comprises an overflow valve I20 and an overflow valve II21, the safety valve II19 is connected with the overflow valve I20 and the overflow valve II21, the overflow valve I20 and the overflow valve II21 are respectively connected with the electromagnetic ball valve II18 and the electromagnetic ball valve I17, the set pressure of the overflow valve I20 is low pressure, the set pressure of the overflow valve II21 is high pressure, when a pipeline needs low-pressure loading, the electromagnetic valve I17 is electrified, the electromagnetic valve II18 is not electrified, because the pressure of the overflow valve I20 is low, the pipeline pressure is set to be low pressure through the overflow valve I20, and the hydraulic pump 14 is started at low pressure; when high-pressure loading is required, the electromagnetic valve I17 cannot be electrified, the electromagnetic valve II18 is electrified, the pipeline pressure is set to be high through the overflow valve II21, and the hydraulic pump 14 is switched to be high; the electromagnetic ball valve I17 is connected with the safety valve II19, and the electromagnetic ball valve II18 is connected with the electromagnetic ball valve I17; and the overflow valve II21 and the electromagnetic ball valve II18 are both connected with a second oil inlet P.
As shown in fig. 4 and 5, the working method of the present invention is: oil in the oil tank 11 enters through a second oil inlet P, the left position of the electromagnetic directional valve 2 of the control oil way is electrified, the electromagnetic directional valve 2 is switched to a cross position, meanwhile, the oil flows to the right side of the hydraulic control directional valve 4 through the cross position as control oil, so that the hydraulic control directional valve 4 is switched to a right position, the oil enters a rodless cavity of the oil cylinder 10 through the second oil inlet P, the hydraulic control directional valve 4 and a one-way throttle valve II6 of a right oil inlet pipeline, an expansion link of the oil cylinder 10 extends out, and the oil in a rod cavity of the oil cylinder 10 returns through a balance valve II15 of a right oil outlet pipeline; oil in the oil tank 11 enters through the second oil inlet P, the right position of the electromagnetic directional valve 2 is electrified, the electromagnetic directional valve 2 is switched to the parallel position, meanwhile, the oil flows to the left side of the hydraulic control directional valve 4 through the parallel position as control oil, so that the hydraulic control directional valve 4 is switched to the left position, the oil enters the rod cavity of the oil cylinder 10 through the second oil inlet P, the hydraulic control directional valve 4, the one-way throttle valve IV16 of the left oil inlet pipeline and the flowmeter 9, the telescopic rod is recovered, and the oil in the rodless cavity of the oil cylinder 10 returns through the balance valve I5 of the left oil outlet pipeline.
In the embodiment, the model of the flow meter is ZHA05K L, the number of the pressure sensors is two, the two pressure sensors are respectively a first pressure sensor 7 and a second pressure sensor 8 which are respectively arranged in a first oil port a and a second oil port B, when oil enters from the first oil port a, the first pressure sensor 7 can detect the pressure of oil entering from a rodless cavity of the oil cylinder, the second pressure sensor 8 can detect the pressure of oil returning from a rod cavity of the oil cylinder, when oil enters from the second oil port B, the second pressure sensor 8 can detect the pressure of oil entering from the rod cavity of the oil cylinder, the first pressure sensor 7 can detect the pressure of oil returning from the rodless cavity, the model of the electromagnetic directional valve 2 is 4WE 6J-L6X/EG 24N9K4, the model of the hydraulic directional valve 4 is DCEC XYN, the oil cylinder 10 is a hydraulic oil cylinder, the controller is P L C, the electromagnetic directional valve 2, the motor 12, the electromagnetic I17 and the electromagnetic II18 are electrically connected with the P L C, and the conventional ball valve is omitted.
Example 2: a control method of a stroke control device of a slurry shield crusher, as shown in fig. 6, comprises the following steps:
s1, counting the integral of the oil flow entering the flowmeter 9 in one stroke of the oil cylinder 10 according to the received signal generated by the pulse amplifier 9-4 by the P L C, and calculating the volume of the oil flowing out of the oil cylinder 10 in the corresponding stroke;
s2, calculating the stroke of the oil cylinder 10 by dividing the oil volume obtained in the step S1 by the cross-sectional area of the oil cylinder 10 through P L C;
s3, calculating a stroke ratio according to the stroke of the oil cylinder 10 obtained in the step S2 and the full stroke of the oil cylinder 10 by the P L C, and judging whether the crusher needs to perform high-pressure crushing according to the stroke ratio;
in general, the crusher system has two oil cylinders 10, two jaws are respectively installed on the two oil cylinders 10, and the two jaws are driven to perform extrusion action to crush stones when the oil cylinders 10 are extended out, in this embodiment, the control principle of the two oil cylinders 10 is completely the same, and only one oil cylinder is used for control explanation in the present invention.
If the stroke ratio of the oil cylinder 10 is larger than 95%, the distance between the two jaw plates is very small, namely the stone is small, the stone can be directly discharged out of the air cushion bin without being crushed, at the moment, the hydraulic pump 14 does not switch high pressure, and the telescopic rod is directly recycled.
The structure of the travel control device of the slurry shield crusher in the embodiment is the same as that of the embodiment 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. A stroke control device of a slurry shield crusher comprises an oil tank (11) and an oil cylinder (10), and is characterized by further comprising an oil way control valve block, wherein a first oil port (A), a second oil port (B) and a second oil inlet (P) are arranged in the oil way control valve block, the first oil port (A) is communicated with a rodless cavity of the oil cylinder (10), the second oil inlet (P) is connected with an outlet of the oil tank (11), the second oil port (B) is connected with a rod cavity of the oil cylinder (10), and a flow meter (9) is arranged on a connecting pipeline of the second oil port (B) or the first oil port (A) and the oil cylinder (10); the second oil inlet (P) is connected with a hydraulic control directional valve (4) through a control oil way, and the hydraulic control directional valve (4) is respectively connected with the input ends of the right oil inlet pipeline and the left oil inlet pipeline; the output end of the right oil inlet pipeline is connected with the first oil port (A), and the output end of the left oil inlet pipeline is connected with the second oil port (B); the first oil port (A) is connected with an oil return port (T) of the oil tank (11) through a left oil outlet pipeline, and the second oil port (B) is connected with the oil return port (T) of the oil tank (11) through a right oil outlet pipeline; the hydraulic control directional valve (4) is connected with the second oil inlet (P); the flow meter (9) is electrically connected with a controller, and the controller is electrically connected with a control unit of the crusher.
2. The travel control device of the slurry shield crusher according to claim 1, wherein the right oil inlet pipeline comprises a one-way throttle valve II (6), and two ends of the one-way throttle valve II (6) are respectively connected with the hydraulic control directional valve (4) and the first oil port (A); the right oil outlet pipeline comprises a balance valve II (15), and two ends of the balance valve II (15) are respectively connected with the second oil port (B) and an oil return port (T) of the oil tank (11).
3. The travel control device of the slurry shield crusher according to claim 1 or 2, wherein the left oil inlet pipeline comprises a one-way throttle valve IV (16), and two ends of the one-way throttle valve IV (16) are respectively connected with the second oil port (B) and the hydraulic control directional valve (4); the left oil outlet pipeline comprises a balance valve I (5), and two ends of the balance valve I (5) are respectively connected with the first oil port (A) and an oil return port (T) of the oil tank (11).
4. The stroke control device of the slurry shield crusher according to claim 3, wherein the control oil path comprises an electromagnetic directional valve (2), the electromagnetic directional valve (2) is respectively connected with the hydraulic control directional valve (4) through a one-way throttle valve I (3) and a one-way throttle valve III (13), and the electromagnetic directional valve (2) is connected with the second oil inlet (P).
5. The travel control device of the slurry shield crusher according to claim 4, wherein the left oil outlet pipeline and the right oil outlet pipeline are connected with an oil return port (T) of an oil tank (11) through a safety valve I (1), and the safety valve I (1) is connected with the electromagnetic directional valve (2) and the hydraulic directional valve (4).
6. The travel control device of the slurry shield crusher according to claim 1 or 5, wherein a metering cavity is arranged in the middle of the flowmeter (9), and a pulse amplifier (9-4) is arranged on the flowmeter (9); and a rotating mechanism is arranged in the metering cavity, the rotating mechanism is matched with the pulse amplifier (9-4), and the pulse amplifier (4) is electrically connected with the controller.
7. A slurry shield crusher stroke control device according to claim 6, characterized in that the rotating mechanism comprises a first gear (9-5) and a second gear (9-6) which are meshed with each other, and the first gear (9-5) and the second gear (9-6) are matched with a probe of a pulse amplifier (9-4).
8. A slurry shield crusher stroke control device according to claim 1 or 7, characterized in that the crusher control unit comprises a hydraulic pump (14), the hydraulic pump (14) is connected with an oil tank (11), and the hydraulic pump (14) is connected with a return line through a safety valve II (19); and the safety valve II (19) is connected with the second oil inlet (P) through a hydraulic control circuit.
9. The travel control device of the slurry shield crusher according to claim 8, characterized in that the working method is as follows: oil in an oil tank (11) enters oil through a second oil inlet (P), the left position of an electromagnetic directional valve (2) of a control oil way is electrified, the electromagnetic directional valve (2) is switched to a cross position, meanwhile, the oil flows to the right side of a hydraulic control directional valve (4) through the cross position as control oil, the hydraulic control directional valve (4) is switched to the right position, the oil enters a rodless cavity of an oil cylinder (10) through the second oil inlet (P), the hydraulic control directional valve (4) and a one-way throttle valve II (6) of a right oil inlet pipeline, the oil cylinder (10) extends out, and the oil in a rod cavity of the oil cylinder (10) returns through a balance valve II (15) of a right oil outlet pipeline; oil in the oil tank (11) enters oil through a second oil inlet (P), the right position of the electromagnetic directional valve (2) is electrified, the electromagnetic directional valve (2) is switched to the parallel position, meanwhile, the oil flows to the left side of the hydraulic control directional valve (4) through the parallel position as control oil, the hydraulic control directional valve (4) is switched to the left position, the oil enters a rod cavity of the oil cylinder (10) through the second oil inlet (P), the hydraulic control directional valve (4), a one-way throttle valve IV (16) and a flowmeter (9) of a left oil inlet pipeline, the oil cylinder (10) is recycled, and the oil in a rodless cavity of the oil cylinder (10) returns oil through a balance valve I (5) of a left oil outlet pipeline.
10. The control method of the travel control device of the slurry shield crusher according to claim 1, characterized by comprising the steps of:
s1, calculating the volume of oil flowing out of the oil cylinder (10) in a corresponding stroke by the controller through counting the integral of the oil flow entering the flowmeter (9) in the stroke of the oil cylinder (10);
s2, the controller calculates the stroke of the oil cylinder (10) according to the oil volume obtained in the step S1 divided by the cross section area of the oil cylinder (10);
and S3, the controller calculates a stroke ratio according to the stroke of the oil cylinder (10) obtained in the step S2 and the full stroke amount of the oil cylinder (10), and judges whether the crusher needs to perform high-pressure crushing according to the stroke ratio.
11. The control method of a slurry shield crusher stroke control device according to claim 10, characterized in that in step S3, if the stroke ratio of the cylinder (10) is less than 95%, the hydraulic pump (14) of the control cylinder (10) is switched to a high pressure mode; if the stroke ratio of the cylinder (10) is greater than or equal to 95%, the hydraulic pump (14) executes a low pressure mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310405.0A CN111396408B (en) | 2020-04-20 | 2020-04-20 | Stroke control device and method for slurry shield crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310405.0A CN111396408B (en) | 2020-04-20 | 2020-04-20 | Stroke control device and method for slurry shield crusher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111396408A true CN111396408A (en) | 2020-07-10 |
| CN111396408B CN111396408B (en) | 2022-03-04 |
Family
ID=71433459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010310405.0A Active CN111396408B (en) | 2020-04-20 | 2020-04-20 | Stroke control device and method for slurry shield crusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111396408B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196848A (en) * | 2020-10-23 | 2021-01-08 | 中铁工程装备集团有限公司 | Hydraulic control system of shield machine main drive anti-torsion device |
| CN112555227A (en) * | 2020-11-20 | 2021-03-26 | 湖南三一快而居住宅工业有限公司 | Automatic adjusting system for sizes of oil cylinder and material opening and crusher |
| CN113124014A (en) * | 2021-04-01 | 2021-07-16 | 北京科技大学 | Movement time adjusting structure and method of distributing valve for hydraulic breaking hammer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074004A (en) * | 1999-09-06 | 2001-03-23 | Daiho Constr Co Ltd | Control method of and control circuit of driving jack, and cutter driving method of and cutter driving device for underground excavator |
| CN204140521U (en) * | 2014-09-26 | 2015-02-04 | 长沙中联消防机械有限公司 | Hydraulic control circuit, side ladder device and fire-fighting truck |
| CN110486343A (en) * | 2019-08-14 | 2019-11-22 | 中国电建集团长春发电设备有限公司 | A kind of spiral push-bench drive hydraulic system principle |
-
2020
- 2020-04-20 CN CN202010310405.0A patent/CN111396408B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074004A (en) * | 1999-09-06 | 2001-03-23 | Daiho Constr Co Ltd | Control method of and control circuit of driving jack, and cutter driving method of and cutter driving device for underground excavator |
| CN204140521U (en) * | 2014-09-26 | 2015-02-04 | 长沙中联消防机械有限公司 | Hydraulic control circuit, side ladder device and fire-fighting truck |
| CN110486343A (en) * | 2019-08-14 | 2019-11-22 | 中国电建集团长春发电设备有限公司 | A kind of spiral push-bench drive hydraulic system principle |
Non-Patent Citations (2)
| Title |
|---|
| 朱有伟等: "泥水平衡盾构机破碎机液压元件故障分析及改进方法", 《工程机械与维修》 * |
| 缪楠等: "盾构碎石机系统故障处理", 《建筑机械化》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196848A (en) * | 2020-10-23 | 2021-01-08 | 中铁工程装备集团有限公司 | Hydraulic control system of shield machine main drive anti-torsion device |
| CN112196848B (en) * | 2020-10-23 | 2023-08-11 | 中铁工程装备集团有限公司 | Hydraulic control system of main driving torsion preventing device of shield tunneling machine |
| CN112555227A (en) * | 2020-11-20 | 2021-03-26 | 湖南三一快而居住宅工业有限公司 | Automatic adjusting system for sizes of oil cylinder and material opening and crusher |
| CN113124014A (en) * | 2021-04-01 | 2021-07-16 | 北京科技大学 | Movement time adjusting structure and method of distributing valve for hydraulic breaking hammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111396408B (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111396408B (en) | Stroke control device and method for slurry shield crusher | |
| CN101874161B (en) | Hydraulic drive system and diagnostic control strategy for improved operation | |
| CN101749301A (en) | Hydraulic cylinder device and hydraulic cylinder behavior control system with same | |
| CN103249950A (en) | Hybrid hydraulic systems for industrial processes | |
| CN103148031A (en) | Energy-saving control system of hydraulic movable arm loop | |
| CN105257889A (en) | Electro-hydraulic driving system for sluice valve and sluice valve | |
| CN201475067U (en) | Multi-pump combined control hydraulic power system based on servo motor control | |
| CN106703110A (en) | Intelligent shock absorption hydraulic control method and control system of excavator | |
| CN105507362B (en) | Without spill losses loader hydraulic system and its control method | |
| CN105003715A (en) | Brake valve electro-hydraulic drive system with emergency shut valve function and brake valve | |
| CN101691877B (en) | Servo motor control-based multi-pump combination controlled hydraulic power system | |
| CN109058187B (en) | Unloading buffer hydraulic system | |
| CN105545847A (en) | Hydraulic control system of crusher | |
| CN104214078A (en) | Diaphragm pump with automatic protection function and automatic protection method of diaphragm pump | |
| CN106246623B (en) | A kind of activating feeder hydraulic gate constant pressure hydraulic control system | |
| CN113153200A (en) | Hydraulic rock drill electrohydraulic control system and method | |
| CN214945436U (en) | Stroke monitoring device of crusher oil cylinder in shield machine | |
| CN208082546U (en) | Crusher main engine cavity clearing device and controller | |
| CN113374749B (en) | Hydraulic control system and control method of oil cylinder crusher device | |
| CN107812554A (en) | Crusher main engine cavity clearing device, method and control system | |
| US20170335840A1 (en) | Pump arrangement | |
| CN107178530A (en) | Garbage compression box power unit | |
| CN206830553U (en) | Garbage compression box power unit | |
| CN107605869B (en) | A kind of cooling hydraulic circuit of oil cylinder | |
| CN102304931B (en) | Hydraulic energy-saving control system and method for loader movable arm |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |