CN113618892A - Full hydraulic drive formula slip casting machine hydraulic control system - Google Patents
Full hydraulic drive formula slip casting machine hydraulic control system Download PDFInfo
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- CN113618892A CN113618892A CN202110801587.6A CN202110801587A CN113618892A CN 113618892 A CN113618892 A CN 113618892A CN 202110801587 A CN202110801587 A CN 202110801587A CN 113618892 A CN113618892 A CN 113618892A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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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
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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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
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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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0427—Heating
Abstract
The invention discloses a hydraulic control system of a full hydraulic drive type grouting machine, which comprises an oil supply subsystem, a pumping subsystem and a plurality of stirring subsystems, and mainly comprises an oil tank, a liquid level controller, an oil thermometer, an electric heater, an air filter, an oil inlet filter, a hydraulic pump, a coupler, a motor, a generator, an electro-hydraulic proportional overflow valve, an oil return filter, a one-way valve, a fine filter, an energy accumulator, a pressure gauge, a ball valve, a reversing valve, a hydraulic motor, a screw rod conveying pump, a stirring pump and the like; the oil supply subsystem is used for providing a power source for the whole system; the pumping subsystem is used for pressurizing and conveying the mixed slurry output by the stirring subsystem; the stirring subsystem is used for uniformly stirring a single raw material or multiple types of raw materials. The invention has flexible operation mode, multiple purposes, stability and reliability, and can meet the special requirements of material diversity, grouting uniformity, large pumping depth and the like.
Description
Technical Field
The invention relates to the technical field of hydraulic transmission and control, in particular to a hydraulic control system of a full hydraulic drive type grouting machine.
Background
The mountain area of China occupies 2/3, and the geographic geology and climatic conditions are complex, and the natural disasters are various. Emergency water supply is a lifeline project for survival guarantee after disasters. In recent years, multiple disaster rescue practices show that the development of key emergency water supply technology in mountainous areas and remote disaster areas, the development of a complete equipment system suitable for various disaster sites, the improvement of rescue guarantee capability in mountainous areas and disaster sites, and the development of the key emergency water supply technology are important civil problems to be solved urgently in the field of disaster relief and emergency in China. In the face of complex geological conditions of mountainous areas and remote disaster areas, water finding, well fixing, well forming, well cementing and water lifting are common technical paths for solving emergency water supply, and a grouting machine is used as a first-choice device for seepage stopping, leakage stopping, reinforcing and reinforcing, plays an important role in the links of rapid well forming and well cementing of emergency water supply and provides necessary guarantee.
At present, a pneumatic grouting machine and a hydraulic grouting machine are commonly used as commonly used grouting machines. The pneumatic grouting machine has the working principle that the premixed mixture is conveyed to a nozzle of the grouting machine through a pipeline by utilizing compressed air, and mortar is sprayed to a sprayed surface at a high speed by virtue of air pressure to be condensed and hardened, so that a concrete support layer is formed. However, when the emergency water supply rapid well-forming and well-cementing task under complex geological conditions of mountain areas and remote disaster areas is faced, the driving mode of the pneumatic grouting machine cannot meet the emergency water supply guarantee requirements of the mountain areas and the remote disaster areas due to the defects that the requirement on the sand grain size range of mortar is high, stirring and grouting can not be integrated, stable grouting pressure can not be maintained in the construction process, and the like.
The hydraulic grouting machine can utilize high pressure to quickly and accurately inject easily solidified substances or mixture (cement paste, cement paste and the like) into cracks and cavities of rock strata or soil so as to achieve the purposes of reducing water seepage and consolidating the rock strata and the soil. At present, a hydraulic pump is mostly adopted to drive a single hydraulic cylinder and a double hydraulic cylinder to serve as power sources for a common hydraulic grouting machine so as to drive a grouting pump to suck and discharge grout. However, the grouting machine adopting this method still has many defects in engineering application, such as: the pumping medium is single; the conveying medium is discontinuous, and the pulse impact is large; shorter pumping distance, etc., and the application range is limited. In recent years, although many technicians in the field have designed various solutions for the above problems, for example, patents CN202010229981.2, CN202021104478.6, CN201620252023.6, CN201620251837.8 and the like disclose various structural design solutions for hydraulic grouting machines, the optimization solutions for hydraulic control systems of grouting machines are still relatively clear, and there are still problems of single function, limited application range and the like to be solved. Therefore, a hydraulic control system of a full-hydraulic driving grouting machine, which integrates multiple functions of raw material stirring, large-depth pumping, single-material conveying, multi-material mixing and conveying, and the like, is needed to be invented, so that the continuous and uniform well formation-cementing grouting is ensured, and the emergency water supply guarantee requirements of mountain areas and remote disaster areas are met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a hydraulic control system of a full hydraulic drive type grouting machine, which integrates the functions of raw material stirring, large-depth pumping, single material conveying, multi-material mixing conveying and the like into a whole and can realize the multiple purposes of one machine of the hydraulic grouting machine.
In order to solve the defects in the prior art, the invention aims to realize the following technical scheme:
a hydraulic control system of a full hydraulic drive grouting machine is characterized by comprising an oil supply subsystem, a pumping subsystem and a plurality of stirring subsystems;
the oil supply subsystem is used for providing a power source for the whole system;
the pumping subsystem is used for conveying the mixed slurry output by the stirring subsystem under pressure, and comprises: the hydraulic control system comprises a ball valve A, a reversing valve A, a pressure gauge B, a hydraulic motor A, a coupling B, a screw rod conveying pump, a pressure gauge C and a one-way valve B; an oil inlet of the ball valve A is connected with an oil outlet of the oil supply subsystem; the oil outlet of the ball valve A is connected with a port P of the reversing valve A; the port A of the reversing valve A is connected with an oil inlet of the hydraulic motor A; the pressure gauge B is arranged on a branch oil path between the reversing valve A and the hydraulic motor A; the output shaft of the hydraulic motor A is connected with the screw conveying pump through the coupler B; an oil outlet of the hydraulic motor A is connected with a port B of the reversing valve A; the pressure gauge C is arranged on a branch oil path between an oil outlet of the hydraulic motor A and a port B of the reversing valve A; the T port of the reversing valve A is connected with the oil inlet of the one-way valve B; an oil outlet of the one-way valve B is communicated with the oil supply subsystem;
the stirring subsystems have the same structure and comprise a ball valve B, a reversing valve B, a pressure gauge D, a hydraulic motor B, a coupler C, a stirring pump A, a pressure gauge E and a one-way valve C; an oil inlet of the ball valve B is connected with an oil outlet of the oil supply subsystem; an oil outlet of the ball valve B is connected with a port P of the reversing valve B; the port A of the reversing valve B is connected with an oil inlet of the hydraulic motor B; a pressure gauge D is arranged on a branch oil path between the port A of the reversing valve B and the hydraulic motor B; an output shaft of the hydraulic motor B is connected with the stirring pump A through a coupler C; an oil outlet of the hydraulic motor B is connected with a port B of the reversing valve B; the pressure gauge E is arranged on a branch oil path between an oil outlet of the hydraulic motor B and a port B of the reversing valve B; a T port of the reversing valve B is connected with an oil inlet of the one-way valve C; and an oil outlet of the one-way valve C is communicated with the oil supply subsystem.
Further, the oil supply subsystem includes: the system comprises an oil tank, a hydraulic pump, a coupler A, a motor, a generator, an electro-hydraulic proportional overflow valve, a check valve A, a fine filter and an energy accumulator;
the hydraulic pump is arranged on a main oil supply path of the oil tank; the input shaft of the hydraulic pump is connected with the motor through the coupler A; the motor is connected with the generator through the power supply circuit; an oil outlet of the hydraulic pump is connected with an oil inlet of the one-way valve A; the branch oil path between the hydraulic pump and the single valve A is provided with the electro-hydraulic proportional overflow valve; the oil outlet of the electro-hydraulic proportional overflow valve is communicated with the oil tank; an oil outlet of the one-way valve A is connected with an oil inlet of the fine filter; the energy accumulator is arranged between the one-way valve A and the fine filter in parallel through a branch oil path, and an oil outlet of the fine filter is connected with an oil inlet of the ball valve B.
Further, the oil supply subsystem also comprises a liquid level controller and an oil temperature gauge; the liquid level controller and the oil thermometer are both arranged in the oil tank.
Furthermore, the oil supply subsystem also comprises an electric heater and an air filter, and the electric heater and the air filter are both arranged in the oil tank.
Furthermore, the oil supply subsystem further comprises an oil inlet filter and an oil return filter A, and the oil inlet filter is installed on a pipeline between the hydraulic pump and the oil tank; and the oil return filter A is arranged on a pipeline between an oil outlet of the electro-hydraulic proportional overflow valve and the oil tank.
Further, the oil supply subsystem further comprises a pressure gauge A, and the pressure gauge A is installed between the check valve A and the fine filter in parallel through a branch oil path.
Further, the stirring subsystem further comprises an oil return filter C, and the oil return filter C is installed on a pipeline communicated with the oil supply subsystem through an oil outlet of the one-way valve B.
Further, the pumping subsystem is communicated with an oil return filter B, and an oil outlet of the one-way valve B is communicated with the oil supply subsystem through the oil return filter B.
Compared with the prior art, the invention has the following advantages:
(1) the invention adopts a full hydraulic drive configuration design, has compact structure, convenient assembly and disassembly and high reliability;
(2) the hydraulic integrated control mode is adopted, so that the hydraulic integrated control system is simple to operate, has multiple functions and is convenient for engineering application;
(3) the invention can fill the thick liquid with a large range of 'water-cement ratio', and is particularly suitable for thick liquid with high-concentration design requirement;
(4) the invention can pour the slurry 'the sand-lime ratio' is large, the particle size range of the sand is wide;
(5) the system has stable pressure, can be used for continuous grouting, and has continuous and uniform slurry outlet;
(6) the invention can passively boost voltage. When the grout is fully filled, the pressure is gradually increased, so that the grouting pressure is convenient to control and maintain;
(7) the grouting pressure can be reversely released after reaching the set pressure.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic control system of a full hydraulic drive grouting machine according to the invention.
In the figure: 1-an oil tank; 2-a liquid level controller; 3-oil thermometer; 4-an electric heater; 5-an air filter; 6-an oil inlet filter; 7-a hydraulic pump; 8-coupler A; 9-an electric motor; 10-a generator; 11-an electro-hydraulic proportional overflow valve; 12-return oil filter a; 13-one-way valve a; 14-a fine filter; 15-an accumulator; 16-pressure gauge A; 17-ball valve a; 18-change valve a; 19-pressure gauge B; 20-hydraulic motor a; 21-a coupler B; 22-screw conveying pump; 23-pressure gauge C; 24-one-way valve B; 25-oil return filter B; 26-ball valve B; 27-a directional valve B; 28-pressure gauge D; 29-hydraulic motor B; 30-coupler C; 31-stirring pump A; 32-pressure gauge E; 33-one-way valve C; 34-oil return filter C; 35-ball valve C; 36-a direction valve C; 37-pressure gauge F; 38-hydraulic motor C; 39-coupling D; 40-stirring pump B; 41-pressure gauge G; 42-one-way valve D; 43-oil return filter D.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
As shown in fig. 1, the hydraulic control system of the fully hydraulic drive grouting machine according to the embodiment of the present invention includes an oil supply subsystem, a pumping subsystem, and a plurality of stirring subsystems, where the number of the stirring subsystems in this embodiment is two, and the two stirring subsystems are respectively a first stirring subsystem and a second stirring subsystem.
The oil supply subsystem is used for providing a power source for the whole system, and comprises the following components: the device comprises an oil tank 1, a liquid level controller 2, an oil thermometer 3, an electric heater 4, an air filter 5, an oil inlet filter 6, a hydraulic pump 7, a coupler A-8, a motor 9, a generator 10, an electro-hydraulic proportional overflow valve 11, an oil return filter A-12, a check valve A-13, a fine filter 14, an energy accumulator 15 and a pressure gauge A-16. The oil tank 1 is provided with a liquid level controller 2, an oil thermometer 3, an electric heater 4 and an air filter 5; a hydraulic pump 7 is arranged on a main oil supply path on the oil tank 1; the oil inlet filter 6 is connected between the hydraulic pump 7 and the oil tank 1; the input shaft of the hydraulic pump 7 is connected with the motor 9 through a coupling A-8; the motor 9 is connected with the generator 10 through a power supply circuit; an oil outlet of the hydraulic pump 7 is connected with an oil inlet of the one-way valve A-13; an electro-hydraulic proportional overflow valve 11 is arranged on a branch oil path between the hydraulic pump 7 and the single valve A-13; an oil outlet of the electro-hydraulic proportional overflow valve 11 is communicated with the oil tank 1 through an oil return filter A-12; the oil outlet of the one-way valve A-13 is connected with the oil inlet of the fine filter 14; an energy accumulator 15 and a pressure gauge A-16 are arranged in parallel between the check valve A-13 and the fine filter 14 through a branch oil path.
The pumping subsystem is used for pressurizing and conveying mixed slurry output by the first stirring subsystem and the second stirring subsystem, and comprises: the device comprises a ball valve A-17, a reversing valve A-18, a pressure gauge B-19, a hydraulic motor A-20, a coupling B-21, a screw rod conveying pump 22, a pressure gauge C-23, a one-way valve B-24 and an oil return filter B-25. An oil inlet of the ball valve A-17 is connected with an oil outlet of the fine filter 14 on the main oil supply path; the oil outlet of the ball valve A-17 is connected with the port P of the reversing valve A-18; the port A of the reversing valve A-18 is connected with an oil inlet of the hydraulic motor A-20; a pressure gauge B-19 is arranged on a branch oil path between the two; the output shaft of the hydraulic motor A-20 is connected with a screw rod delivery pump 22 through a coupling B-21; an oil outlet of the hydraulic motor A-20 is connected with a port B of the reversing valve A-18, and a pressure gauge C-23 is arranged on a branch oil path between the hydraulic motor A-20 and the reversing valve A-18; the T port of the reversing valve A-18 is connected with the oil inlet of the one-way valve B-24; the oil outlet of the one-way valve B-24 is communicated with the oil tank 1 through an oil return filter B-25.
The first stirring subsystem is used for evenly stirring raw materials, and comprises the following components: the device comprises a ball valve B-26, a reversing valve B-27, a pressure gauge D-28, a hydraulic motor B-29, a coupling C-30, a stirring pump A-31, a pressure gauge E-32, a one-way valve C-33 and an oil return filter C-34. An oil inlet of the ball valve B-26 is connected with an oil outlet of the fine filter 14 on the main oil supply path; an oil outlet of the ball valve B-26 is connected with a port P of the reversing valve B-27; the port A of the reversing valve B-27 is connected with an oil inlet of a hydraulic motor B-29, and a pressure gauge D-28 is arranged on a branch oil path between the port A and the oil inlet; the output shaft of the hydraulic motor B-29 is connected with the stirring pump A-31 through a coupling C-30; an oil outlet of the hydraulic motor B-29 is connected with a port B of the reversing valve B-27, and a branch oil path between the hydraulic motor B-29 and the port B is provided with a pressure gauge E-32; a T port of the reversing valve B-27 is connected with an oil inlet of the one-way valve C-33; the oil outlet of the one-way valve C-33 is communicated with the oil tank 1 through an oil return filter C-34.
The second stirring subsystem is used for evenly stirring another raw material, and comprises the following components: the device comprises a ball valve C-35, a reversing valve C-36, a pressure gauge F-37, a hydraulic motor C-38, a coupler D-39, a stirring pump B-40, a pressure gauge G-41, a one-way valve D-42 and an oil return filter D-43. An oil inlet of the ball valve C-35 is connected with an oil outlet of the fine filter 14 on the main oil supply path; an oil outlet of the ball valve C-35 is connected with a port P of the reversing valve C-36; the port A of the reversing valve C-36 is connected with an oil inlet of the hydraulic motor C-38, and a pressure gauge F-37 is arranged on a branch oil path between the port A and the oil inlet; the output shaft of the hydraulic motor C-38 is connected with the stirring pump B-40 through a coupler D-39; an oil outlet of the hydraulic motor C-38 is connected with a port B of the reversing valve C-36, and a branch oil path between the hydraulic motor C-38 and the port B is provided with a pressure gauge G-41; a T port of the reversing valve C-36 is connected with an oil inlet of the one-way valve D-42; the oil outlet of the one-way valve D-42 is communicated with the oil tank 1 through an oil return filter D-43.
The working process of the hydraulic control system of the full hydraulic drive grouting machine in the embodiment of the invention is as follows:
after the motor 9 drives the hydraulic pump 7 to normally operate, the control handles of the ball valves B-26 and C-35 are rotated to open the ball valves B-26 and C-35. And adjusting control handles of the reversing valve B-27 and the reversing valve C-36 to enable the reversing valve B-27 and the reversing valve C-36 to leave the middle position and reverse to the left position or the right position. At this time, the hydraulic oil in the oil tank 1 is pressurized by the hydraulic pump 7, and then flows through the direction change valve B-27 and the direction change valve C-36, so that the hydraulic motor B-29 and the hydraulic motor C-38 are operated to drive the agitation pump A-31 and the agitation pump B-40 to operate, respectively, to agitate the raw material. The stirring pumps A-31 and B-40 belong to the first stirring subsystem and the second stirring subsystem respectively, and can operate independently or simultaneously, so that uniform stirring of a single raw material can be completed, and uniform stirring of multiple raw materials can be performed simultaneously.
After the raw materials are uniformly stirred, the control handle of the ball valve A-17 is rotated to open the ball valve A-17. And adjusting a control handle of the reversing valve A-18 to enable the reversing valve A-18 to leave the middle position and reverse to the left position or the right position. At this time, the hydraulic oil in the oil tank 1 is boosted by the hydraulic pump 7, then flows through the reversing valve A-18, so that the hydraulic motor A-20 is operated to drive the screw delivery pump 22 to work, and a large-depth pumping process of a single raw material or a plurality of raw materials is performed.
A pressure gauge B-19 is installed on a branch oil path between the port A of the reversing valve A-18 and an oil inlet of the hydraulic motor A-20, and a pressure gauge C-23 is installed on a branch oil path between an oil outlet of the hydraulic motor A-20 and the port B of the reversing valve A-18. The pressure gauge B-19 and the pressure gauge C-23 can monitor oil inlet pressure and oil return pressure in real time, and are convenient for controlling and adjusting grouting pressure in time. When the grout is fully filled, the load of the screw conveying pump 22 is gradually increased, so that the load pressure of the hydraulic motor A-20 is gradually increased, when the grouting pressure reaches the set pressure, the control handle of the reversing valve A-18 is adjusted to reverse the reversing valve A-18, so that an oil inlet way and an oil return way are exchanged, the hydraulic motor A-20 is driven to drive the screw conveying pump 22 to reversely rotate, the reverse pressure relief is realized, and the grouting pressure is timely adjusted. The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (8)
1. A hydraulic control system of a full hydraulic drive grouting machine is characterized by comprising an oil supply subsystem, a pumping subsystem and a plurality of stirring subsystems;
the oil supply subsystem is used for providing a power source for the whole system;
the pumping subsystem is used for conveying the mixed slurry output by the stirring subsystem under pressure, and comprises: the hydraulic control system comprises a ball valve A, a reversing valve A, a pressure gauge B, a hydraulic motor A, a coupling B, a screw rod conveying pump, a pressure gauge C and a one-way valve B; an oil inlet of the ball valve A is connected with an oil outlet of the oil supply subsystem; the oil outlet of the ball valve A is connected with a port P of the reversing valve A; the port A of the reversing valve A is connected with an oil inlet of the hydraulic motor A; the pressure gauge B is arranged on a branch oil path between the reversing valve A and the hydraulic motor A; the output shaft of the hydraulic motor A is connected with the screw conveying pump through the coupler B; an oil outlet of the hydraulic motor A is connected with a port B of the reversing valve A; the pressure gauge C is arranged on a branch oil path between an oil outlet of the hydraulic motor A and a port B of the reversing valve A; the T port of the reversing valve A is connected with the oil inlet of the one-way valve B; an oil outlet of the one-way valve B is communicated with the oil supply subsystem;
the stirring subsystems have the same structure and comprise a ball valve B, a reversing valve B, a pressure gauge D, a hydraulic motor B, a coupler C, a stirring pump A, a pressure gauge E and a one-way valve C; an oil inlet of the ball valve B is connected with an oil outlet of the oil supply subsystem; an oil outlet of the ball valve B is connected with a port P of the reversing valve B; the port A of the reversing valve B is connected with an oil inlet of the hydraulic motor B; a pressure gauge D is arranged on a branch oil path between the port A of the reversing valve B and the hydraulic motor B; an output shaft of the hydraulic motor B is connected with the stirring pump A through a coupler C; an oil outlet of the hydraulic motor B is connected with a port B of the reversing valve B; the pressure gauge E is arranged on a branch oil path between an oil outlet of the hydraulic motor B and a port B of the reversing valve B; a T port of the reversing valve B is connected with an oil inlet of the one-way valve C; and an oil outlet of the one-way valve C is communicated with the oil supply subsystem.
2. The hydraulic control system of a fully hydraulic driven grouting machine according to claim 1, wherein the oil supply subsystem comprises: the system comprises an oil tank, a hydraulic pump, a coupler A, a motor, a generator, an electro-hydraulic proportional overflow valve, a check valve A, a fine filter and an energy accumulator;
the hydraulic pump is arranged on a main oil supply path of the oil tank; the input shaft of the hydraulic pump is connected with the motor through the coupler A; the motor is connected with the generator through the power supply circuit; an oil outlet of the hydraulic pump is connected with an oil inlet of the one-way valve A; the branch oil path between the hydraulic pump and the single valve A is provided with the electro-hydraulic proportional overflow valve; the oil outlet of the electro-hydraulic proportional overflow valve is communicated with the oil tank; an oil outlet of the one-way valve A is connected with an oil inlet of the fine filter; the energy accumulator is arranged between the one-way valve A and the fine filter in parallel through a branch oil path, and an oil outlet of the fine filter is connected with an oil inlet of the ball valve B.
3. The hydraulic control system of a full hydraulic drive grouting machine according to claim 2, wherein the oil supply subsystem further comprises a liquid level controller and an oil temperature gauge; the liquid level controller and the oil thermometer are both arranged in the oil tank.
4. The hydraulic control system of a full hydraulic drive grouting machine according to claim 2, wherein the oil supply subsystem further comprises an electric heater and an air filter, and the electric heater and the air filter are both installed in the oil tank.
5. The hydraulic control system of a full hydraulic drive type grouting machine according to claim 2, wherein the oil supply subsystem further comprises an oil inlet filter and an oil return filter A, the oil inlet filter is installed on a pipeline between the hydraulic pump and the oil tank; and the oil return filter A is arranged on a pipeline between an oil outlet of the electro-hydraulic proportional overflow valve and the oil tank.
6. The hydraulic control system of a full hydraulic drive type grouting machine according to claim 2, wherein the oil supply subsystem further comprises a pressure gauge A, and the pressure gauge A is installed between the check valve A and the fine filter in parallel through a branch oil path.
7. The hydraulic control system of a full hydraulic drive grouting machine according to claim 1, wherein the stirring subsystem further comprises an oil return filter C, and the oil return filter C is installed on a pipeline where an oil outlet of the check valve B is communicated with the oil supply subsystem.
8. The hydraulic control system of a full hydraulic drive grouting machine according to claim 1, wherein the pumping subsystem is in oil return with a filter B, and the oil outlet of the check valve B is communicated with the oil supply subsystem through the oil return filter B.
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