CN111103619B - Automatic lifting device of controllable seismic source and control method - Google Patents
Automatic lifting device of controllable seismic source and control method Download PDFInfo
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- CN111103619B CN111103619B CN201911385001.1A CN201911385001A CN111103619B CN 111103619 B CN111103619 B CN 111103619B CN 201911385001 A CN201911385001 A CN 201911385001A CN 111103619 B CN111103619 B CN 111103619B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/04—Details
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- 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
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- 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
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- 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
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- 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
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/04—Details
- G01V1/09—Transporting arrangements, e.g. on vehicles
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Abstract
The invention discloses an automatic lifting device of a controllable seismic source and a control method, wherein the automatic lifting device comprises a pressing plate, an air spring, an oil cylinder, an electric control reversing valve, an electric control overflow valve and a control unit; the control unit is respectively and electrically connected with the electric control reversing valve and the electric control overflow valve and is respectively used for controlling the reversing of the electric control reversing valve and the opening degree of the overflow valve, the shock excitation system is connected with the seismic source vehicle through the pressing plate, the oil cylinder is fixed on the seismic source vehicle body, and the top end of a piston rod of the oil cylinder is fixedly connected with the upper surface of the pressing plate; the pressing plate is connected with the shock excitation plate through an air spring; the control unit controls the stretching of the piston rod of the oil cylinder by changing the electric control reversing valve, and drives the pressing plate and the controllable seismic source to lift. By controlling the direction of an oil way of the oil cylinder and the size of oil pressure, when the pressure of the pressing plate, the distance between the pressing plate and the shock excitation plate, the oil pressure and other parameters meet set conditions, the automatic lifting of the shock excitation system is completed, and the engagement and the disengagement between the shock excitation plate and a soil body are realized.
Description
Technical Field
The invention relates to the technical field of seismic source generators, in particular to an automatic lifting device and a control method for a controllable seismic source.
Background
The controllable seismic source has super-strong anti-interference capability, and because the large controllable seismic source and other vehicle-mounted seismic sources cannot enter complex earth surface areas such as island jungles and the like, the remote control self-walking type controllable seismic source developed according to actual application needs is small in overall dimension of a vehicle body, small in turning radius, flexible in maneuvering and suitable for island and jungles operation, and meanwhile, the remote control walking and construction are adopted, so that the safety of personnel during construction operation is ensured.
The controllable seismic source part needs to be lifted when a vehicle body walks, and needs to be lowered to be matched with a soil body during working, so that the problem of how to realize the automatic lifting of the controllable seismic source is to be solved urgently at present.
Disclosure of Invention
The invention aims to provide an automatic lifting device and a control method of a controllable seismic source.
The above object of the present invention is achieved by the following technical solutions:
an automatic lifting device of a controllable seismic source comprises a shock excitation plate and a heavy hammer, wherein the automatic lifting device comprises a pressure plate, an air spring, an oil cylinder, an electric control reversing valve, an electric control overflow valve and a control unit; the control unit is respectively and electrically connected with the electric control reversing valve and the electric control overflow valve and is respectively used for controlling the reversing of the electric control reversing valve and the opening degree of the overflow valve; the heavy hammer is fixedly connected with the vibration exciting plate, penetrates through the pressing plate, and is connected with the vibration exciting plate through the air spring; the control unit controls the stretching of the piston rod of the oil cylinder by changing the electric control reversing valve, and drives the pressing plate and the controllable seismic source to lift.
The invention is further configured to: the two oil cylinders are respectively arranged at the two ends of the pressing plate and used for controlling the balance of the pressing plate.
The invention is further configured to: the oil pressure detection device is arranged in the oil way and used for detecting the oil pressure in the oil way.
The invention is further configured to: the air spring air inflation pressure detection device is arranged in the air spring and used for detecting the air inflation pressure in the air spring.
The invention is further configured to: the distance detection device is arranged on the lower surface of the pressing plate and used for detecting the distance between the pressing plate and the shock excitation plate; the angle detection device is arranged on the upper surface of the vibration exciting plate and used for detecting the levelness of the vibration exciting plate.
The invention is further configured to: the pressing plate and the shock excitation plate are of square structures, and a certain distance is reserved between the 4 air springs and the edge of the pressing plate in the 4-corner direction of the pressing plate.
The above object of the present invention is achieved by the following technical solutions:
a control method of an automatic lifting device of a controllable seismic source comprises the following steps:
d1, measuring the relation curve between the distance H between the pressure plate and the shock excitation plate and the high-pressure oil supply pressure P of the hydraulic oil source;
d2, setting an overflow pressure set value of the electric control overflow valve according to the seismic source reaction force requirement; when the set value of the overflow pressure is reached, the overflow valve automatically releases pressure;
d3, when the pressure plate is controlled to descend, the control unit controls the electric control reversing valve to feed oil to the oil cylinder in the forward direction, and monitors the pressure in the oil way and the distance between the pressure plate and the shock excitation plate in real time;
d4, when the pressure P reaches a set value and the H value is in a set range, controlling the electric control reversing valve to a neutral position, and keeping the oil pressure stable;
d5, when the pressure plate is controlled to lift, the control unit controls the electric control reversing valve to reversely flow oil into the oil cylinder, and monitors the pressure in the oil way and the distance between the pressure plate and the shock excitation plate in real time;
d6, when the pressure P reaches the set value and the H value is processed within the set range, the electric control reversing valve is controlled to the neutral position, and the oil pressure is kept stable.
The invention is further configured to: the control unit controls the controllable seismic source to automatically descend, and the control method comprises the following steps:
s1, starting;
s2, whether a pressing plate pressing instruction is received or not; if yes, entering the next step, and if not, continuing to wait;
s3, detecting whether the distance between the pressure plate and the shock excitation plate is the maximum value, if so, entering next time, and if not, turning to S10;
s4, detecting whether the inflation pressure in the air spring belongs to a set range, if so, entering the next step, and if not, turning to S12;
s5, detecting whether the overflow valve can operate under the set pressure, if so, entering the next step, and if not, turning to S13;
s6, controlling the electric control reversing valve to move forward, and enabling oil in the oil way to enter the oil cylinder in a forward direction to push the piston rod to extend;
s7, detecting whether the oil pressure in the oil way belongs to the oil pressure setting range, if yes, entering the next step, and if not, turning to S16;
s8, detecting whether the distance between the pressure plate and the shock excitation plate belongs to the distance setting range, if so, entering the next step, and if not, turning to S14;
s9, controlling the valve core of the electric control overflow valve to switch to a middle position, and keeping oil pressure; turning to S17;
s10, detecting whether the distance between the pressing plate and the shock excitation plate exceeds the maximum value, if so, entering the next step, if not, prompting to check the state of the pressing plate, and turning to S4 when the state of the pressing plate is normal;
s11, alarming, prompting to check the limiting device, and turning to S2;
s12, adjusting inflation pressure, and turning to S4;
s13, adjusting the pressure of the oil way, and turning to S7;
s14, controlling the electric control reversing valve to move reversely, and enabling oil in the oil way to reversely enter the oil cylinder to push the piston rod to contract;
s15, alarming, and turning to S8;
s16, alarming;
and S17, ending.
The invention is further configured to: the control unit controls the controllable seismic source to automatically lift, and the method comprises the following steps:
b1, whether a pressure plate lifting instruction is received; if yes, entering the next step, and if not, continuing to wait;
b2, controlling the electric control reversing valve to reversely act, and enabling oil in the oil way to reversely enter the oil cylinder to push the piston rod to contract;
b3, detecting whether the distance between the pressure plate and the vibration exciting plate is the maximum value, if so, entering the next step, and if not, continuing to detect;
b4, detecting whether a displacement sensor arranged in the oil cylinder reaches a lifting safety position, if so, entering the next step, and if not, continuing to detect;
b5, controlling the valve core of the electric control overflow valve to switch to the middle position, and keeping the oil pressure;
and B6, ending.
The invention is further configured to: and measuring the distance H between the pressing plate and the shock excitation plate, and detecting by three distance sensors which are arranged on the lower surface of the pressing plate in a triangular mode.
Compared with the prior art, the invention has the beneficial technical effects that:
1. the automatic lifting device can realize real-time detection on the automatic lifting device and ensure normal operation of the automatic lifting device by detecting parameters such as the distance between the pressing plate and the shock excitation plate and the pressure of the pressing plate;
2. furthermore, the lifting of the automatic lifting device is accurately controlled by detecting various parameters of the oil way, the problems can be found in time, and dangers are avoided;
3. further, this application has realized the accurate measurement to automatic lifting device through reasonable detection device's position that sets up, provides the basis for accurate control.
Drawings
FIG. 1 is a schematic diagram of an automatic lifting device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a platen and shock system configuration according to an embodiment of the present invention;
fig. 3 is a schematic control flow diagram of an automatic lifting device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Detailed description of the invention
The invention relates to an automatic lifting device of a controllable seismic source, which is shown in figures 1 and 2.A shock excitation system of the controllable seismic source comprises a shock excitation plate 7 and a heavy hammer 13, and the automatic lifting device comprises a pressure plate 8, an air spring, an oil cylinder, an electric control reversing valve P1, an electric control overflow valve 6 and a control unit; the control unit is respectively and electrically connected with the electrically controlled reversing valve P1 and the electrically controlled overflow valve 6 and is respectively used for controlling the reversing of the electrically controlled reversing valve P1 and the opening degree of the overflow valve 6, the shock excitation system is connected with a seismic source vehicle through a pressure plate 8, the oil cylinders 1 and 2 are fixed on a seismic source vehicle body, the top ends of a first piston rod 1-1 of the first oil cylinder 1 and a second piston rod 2-1 of the second oil cylinder 2 are respectively and fixedly connected with the upper surface of the pressure plate 8, and the oil paths of the first oil cylinder 1 and the second oil cylinder 2 are respectively provided with the electrically controlled reversing valve P1, the electrically controlled overflow valve 6 and the check valve 5; the heavy hammer 13 penetrates through the pressing plate 8 from a through hole in the middle of the pressing plate 8 and then is fixedly connected with the vibration exciting plate 7, and the pressing plate 8 is connected with the vibration exciting plate 7 through an air spring; the control unit controls the extension and retraction of the piston rod of the oil cylinder by changing the electric control reversing valve P1, and drives the pressure plate 8 and the controllable seismic source to lift.
Piston rods of the first oil cylinder 1 and the second oil cylinder 2 are respectively and fixedly arranged at two ends of the pressing plate 8 and are used for applying pressure to the pressing plate to achieve balance control.
The heavy hammer comprises a third oil cylinder 13, and a third piston rod 13-1 of the third oil cylinder 13 penetrates through the pressing plate 7 and then is fixedly connected with the shock excitation plate 8.
The pressing plate 8 and the shock excitation plate 7 are of square structures, the pressing plate and the shock excitation plate are connected through 4 air springs, only two air springs 9 and 10 are shown in the drawing, and the 4 air springs are distributed in the 4-angle direction of the pressing plate and have a certain distance with the edge of the pressing plate 8.
An inflation pressure detection device is arranged in the air spring and used for detecting the inflation pressure in the air spring.
A distance detection device 12 is arranged on the lower surface of the pressing plate 8 and used for detecting the distance between the pressing plate and the shock excitation plate; an angle detection device 14 is arranged on the lower surface of the pressing plate and used for detecting the levelness of the shock excitation plate.
The distance detection device comprises an infrared distance measurement sensor.
In one particular embodiment of the present application, three infrared ranging sensors are arranged in a triangular manner.
The limiting device comprises two limiting parts 11, the limiting parts penetrate through the pressing plate 8 and then are fixedly connected with the shock excitation plate 7, and the limiting device is used for limiting the highest position of the pressing plate 8, namely limiting the maximum distance between the pressing plate 8 and the shock excitation plate 7.
The working process of the automatic lifting device is as follows:
the control unit controls the oil in the oil tank to enter from the end P of the oil path, and then enters the electric control reversing valve P1 after passing through the electric control overflow valve 6, an oil amount detection device is arranged in the electric control overflow valve 6 and is used for detecting the overflow pressure in the oil path, when the overflow pressure in the oil path is detected to be equal to the overflow pressure set value, the return valve of the electric control overflow valve 6 is opened, the oil with the excess flow set value in the oil path flows back to the oil tank through the return valve, and the overflow pressure in the oil path is smaller than the set value.
The pressure sensor 4 detects the pressure of oil flowing into/out of one oil path, the pressure sensor 3 detects the pressure of oil flowing out/into one oil path, and the pressure of the pressure plate 8 is obtained through calculation by combining the oil pressure value with the area of a piston in an oil cylinder.
When the pressure plate 8 is required to descend, the valve core of the electronic control reversing valve P1 is adjusted to the position A, so that oil in an oil path enters from the upper parts of the first oil cylinder 1 and the second oil cylinder 2 and flows out from the lower parts of the first oil cylinder 1 and the second oil cylinder 2, high pressure is formed at the upper parts of the first oil cylinder 1 and the second oil cylinder 2, the first piston rod 1-1 and the second piston rod 2-1 are pushed to extend, and the pressure plate 8 and the shock excitation system are driven to move downwards.
Correspondingly, when the pressure plate 8 is required to ascend, the valve core of the electronic control reversing valve P1 is adjusted to the position B, so that oil in an oil path enters from the lower parts of the first oil cylinder 1 and the second oil cylinder 2 and flows out from the upper parts of the first oil cylinder 1 and the second oil cylinder 2, high pressure is formed at the lower parts of the first oil cylinder 1 and the second oil cylinder 2, the first piston rod 1-1 and the second piston rod 2-1 are pushed to retract, and the pressure plate 8 and the shock excitation system are driven to move upwards.
The limiting component 11 is used for limiting the maximum distance between the pressing plate 8 and the shock excitation plate 7, and ensuring that the distance between the pressing plate 8 and the shock excitation plate 7 does not exceed the distance setting range.
When the inflation pressure in the air spring belongs to the pressure setting range, the distance between the pressing plate 8 and the shock excitation plate 7 is ensured to belong to the distance setting range.
After oil in the oil cylinder flows out, the oil flows out through the electric control reversing valve P1 and then flows out from the T through the one-way valve 5, and the one-way valve 5 ensures that the flow direction of the oil in the oil way is not abnormal.
When the pressing plate 8 descends or ascends, the pressure of an oil way, the distance between the pressing plate 8 and the shock excitation plate 7 and the inflation pressure in the air spring are detected, the pressing plate and the shock excitation system are monitored in real time, problems are found in time, and dangers are prevented.
Detailed description of the invention
A method for controlling an automatic lifting device of a controllable seismic source is to control the lifting of the shock system, and comprises the following steps:
d1, measuring the relation curve between the distance H between the pressure plate and the shock excitation plate and the high-pressure oil supply pressure P of the hydraulic oil source;
d2, setting an overflow pressure set value of the electric control overflow valve according to the seismic source reaction force requirement; when the set value of the overflow pressure is reached, the overflow valve automatically releases pressure;
d3, when the pressure plate is controlled to descend, the control unit controls the electric control reversing valve to feed oil to the oil cylinder in the forward direction, and monitors the pressure in the oil way and the distance between the pressure plate and the shock excitation plate in real time;
d4, when the pressure P reaches a set value and the H value is in a set range, controlling the electric control reversing valve to a neutral position, and keeping the oil pressure stable;
d5, when the pressure plate is controlled to lift, the control unit controls the electric control reversing valve to reversely flow oil into the oil cylinder, and monitors the pressure in the oil way and the distance between the pressure plate and the shock excitation plate in real time;
d6, when the pressure P reaches the set value and the H value is processed within the set range, the electric control reversing valve is controlled to the neutral position, and the oil pressure is kept stable.
In step D1, the pressure applied to the pressure plate 8 is equal to the counterforce given to the pressure plate 8 by the air spring, where the counterforce F is 2P × a1Wherein P is the high-pressure oil supply pressure of the oil source, A12 denotes 2 cylinders for the cylinder piston area.
The P-H curve is used for the control system to judge the relative position of the pressure plate and the shock excitation plate.
And monitoring various parameters in real time, and alarming when one parameter is abnormal.
Specifically, the control unit controls the controllable seismic source to automatically descend, and the control method comprises the following steps:
s1, starting;
s2, whether a pressing plate pressing instruction is received or not; if yes, entering the next step, and if not, continuing to wait;
s3, detecting whether the distance between the pressure plate and the shock excitation plate is the maximum value, if so, entering next time, and if not, turning to S10;
s4, detecting whether the inflation pressure in the air spring belongs to a set range, if so, entering the next step, and if not, turning to S12;
s5, detecting whether the overflow valve can operate under the set pressure, if so, entering the next step, and if not, turning to S13;
s6, controlling the electric control reversing valve to move forward, and enabling oil in the oil way to enter the oil cylinder in a forward direction to push the piston rod to extend;
s7, detecting whether the oil pressure in the oil way belongs to the oil pressure setting range, if yes, entering the next step, and if not, turning to S16;
s8, detecting whether the distance between the pressure plate and the shock excitation plate belongs to the distance setting range, if so, entering the next step, and if not, turning to S14;
s9, controlling the valve core of the electric control overflow valve to switch to a middle position, and keeping oil pressure; turning to S17;
s10, detecting whether the distance between the pressing plate and the shock excitation plate exceeds the maximum value, if so, entering the next step, if not, prompting to check the state of the pressing plate, and turning to S4 when the state of the pressing plate is normal;
s11, alarming, prompting to check the limiting device, and turning to S2;
s12, adjusting inflation pressure, and turning to S4;
s13, adjusting the pressure of the oil way, and turning to S7;
s14, controlling the electric control reversing valve to move reversely, and enabling oil in the oil way to reversely enter the oil cylinder to push the piston rod to contract;
s15, alarming, and turning to S8;
s16, alarming;
and S17, ending.
The control unit controls the controllable seismic source to automatically lift, and the method comprises the following steps:
b1, whether a pressure plate lifting instruction is received; if yes, entering the next step, and if not, continuing to wait;
b2, controlling the electric control reversing valve to reversely act, and enabling oil in the oil way to reversely enter the oil cylinder to push the piston rod to contract;
b3, detecting whether the distance between the pressure plate and the vibration exciting plate is the maximum value, if so, entering the next step, and if not, continuing to detect;
b4, detecting whether a displacement sensor arranged in the oil cylinder reaches a lifting safety position, if so, entering the next step, and if not, continuing to detect;
b5, controlling the valve core of the electric control overflow valve to switch to the middle position, and keeping the oil pressure;
and B6, ending.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. An automatic lifting device of a controllable seismic source is characterized in that: the shock system of the controllable seismic source comprises a shock plate and a heavy hammer; the automatic lifting device comprises a pressure plate, an air spring, an oil cylinder, an electric control reversing valve, an electric control overflow valve and a control unit; the control unit is respectively and electrically connected with the electric control reversing valve and the electric control overflow valve and is respectively used for controlling the reversing of the electric control reversing valve and the opening degree of the overflow valve, the shock excitation system is connected with a seismic source vehicle through a pressure plate, an air spring and an oil cylinder in the automatic lifting device, the oil cylinder is fixed on a seismic source vehicle body, the top end of a piston rod of the oil cylinder is fixedly connected with the upper surface of the pressure plate, and an oil path of the oil cylinder is provided with the electric control reversing valve and the electric control overflow valve; the heavy hammer penetrates through the pressing plate and is fixedly connected with the vibration exciting plate, and the pressing plate is connected with the vibration exciting plate through an air spring; the control unit controls the stretching of the piston rod of the oil cylinder by changing the electric control reversing valve, and drives the pressing plate and the controllable seismic source to lift.
2. The automatic lifting device of the vibroseis according to claim 1, characterized in that: the two oil cylinders are respectively arranged at the two ends of the pressing plate and used for controlling the balance of the pressing plate.
3. The automatic lifting device of the vibroseis according to claim 1, characterized in that: the oil pressure detection device is arranged in the oil way and used for detecting the oil pressure in the oil way.
4. The automatic lifting device of the vibroseis according to claim 1, characterized in that: the air spring air inflation pressure detection device is arranged in the air spring and used for detecting the air inflation pressure in the air spring.
5. The automatic lifting device of the vibroseis according to claim 1, characterized in that: the distance detection device is arranged on the lower surface of the pressing plate and used for detecting the distance between the pressing plate and the shock excitation plate; the angle detection device is arranged on the upper surface of the vibration exciting plate and used for detecting the levelness of the vibration exciting plate.
6. The automatic lifting device of the vibroseis according to claim 1, characterized in that: the pressing plate and the shock excitation plate are of square structures, and the 4 air springs are distributed on the 4-angle direction of the pressing plate and have a certain distance with the edge of the pressing plate.
7. A control method of an automatic lifting device of a controllable seismic source is characterized in that: the automatic lifting device of the controllable seismic source adopts the device of any one of claims 1 to 6, and comprises the following steps:
d1, measuring the relation curve between the distance H between the pressure plate and the shock excitation plate and the high-pressure oil supply pressure P of the hydraulic oil source;
d2, setting an overflow pressure set value of the electric control overflow valve according to the seismic source reaction force requirement; when the set value of the overflow pressure is reached, the overflow valve automatically releases pressure;
d3, when the pressure plate is controlled to descend, the control unit controls the electric control reversing valve to feed oil to the oil cylinder in the forward direction, and monitors the pressure in the oil way and the distance between the pressure plate and the shock excitation plate in real time;
d4, when the pressure P reaches a set value and the H value is in a set range, controlling the electric control reversing valve to a neutral position, and keeping the oil pressure stable;
d5, when the pressure plate is controlled to lift, the control unit controls the electric control reversing valve to reversely flow oil into the oil cylinder, and monitors the pressure in the oil way and the distance between the pressure plate and the shock excitation plate in real time;
d6, when the pressure P reaches the set value and the H value is processed within the set range, the electric control reversing valve is controlled to the neutral position, and the oil pressure is kept stable.
8. The method for controlling an automatic lifting device of a vibroseis according to claim 7, characterized in that: the control unit controls the controllable seismic source to automatically descend, and the control method comprises the following steps:
s1, starting;
s2, whether a pressing plate pressing instruction is received or not; if yes, entering the next step, and if not, continuing to wait;
s3, detecting whether the distance between the pressure plate and the shock excitation plate is the maximum value, if so, entering next time, and if not, turning to S10;
s4, detecting whether the inflation pressure in the air spring belongs to a set range, if so, entering the next step, and if not, turning to S12;
s5, detecting whether the overflow valve can operate under the set pressure, if so, entering the next step, and if not, turning to S13;
s6, controlling the electric control reversing valve to move forward, and enabling oil in the oil way to enter the oil cylinder in a forward direction to push the piston rod to extend;
s7, detecting whether the oil pressure in the oil way belongs to the oil pressure setting range, if yes, entering the next step, and if not, turning to S16;
s8, detecting whether the distance between the pressure plate and the shock excitation plate belongs to the distance setting range, if so, entering the next step, and if not, turning to S14;
s9, controlling the valve core of the electric control overflow valve to switch to a middle position, and keeping oil pressure; turning to S17;
s10, detecting whether the distance between the pressing plate and the shock excitation plate exceeds the maximum value, if so, entering the next step, if not, prompting to check the state of the pressing plate, and turning to S4 when the state of the pressing plate is normal;
s11, alarming, prompting to check the limiting device, and turning to S2;
s12, adjusting inflation pressure, and turning to S4;
s13, adjusting the pressure of the oil way, and turning to S7;
s14, controlling the electric control reversing valve to move reversely, and enabling oil in the oil way to reversely enter the oil cylinder to push the piston rod to contract;
s15, alarming, and turning to S8;
s16, alarming;
and S17, ending.
9. The method for controlling an automatic lifting device of a vibroseis according to claim 7, characterized in that: the control unit controls the controllable seismic source to automatically lift, and the method comprises the following steps:
b1, whether a pressure plate lifting instruction is received; if yes, entering the next step, and if not, continuing to wait;
b2, controlling the electric control reversing valve to reversely act, and enabling oil in the oil way to reversely enter the oil cylinder to push the piston rod to contract;
b3, detecting whether the distance between the pressure plate and the vibration exciting plate is the maximum value, if so, entering the next step, and if not, continuing to detect;
b4, detecting whether a displacement sensor arranged in the oil cylinder reaches a lifting safety position, if so, entering the next step, and if not, continuing to detect;
b5, controlling the valve core of the electric control overflow valve to switch to the middle position, and keeping the oil pressure;
and B6, ending.
10. The method for controlling an automatic lifting device of a vibroseis according to claim 7, characterized in that: and measuring the distance H between the pressing plate and the shock excitation plate, and detecting by three distance sensors which are arranged on the lower surface of the pressing plate in a triangular mode.
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