CN108999826B - Multifunctional hydraulic integrated valve group of raise boring machine - Google Patents
Multifunctional hydraulic integrated valve group of raise boring machine Download PDFInfo
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- CN108999826B CN108999826B CN201811241081.9A CN201811241081A CN108999826B CN 108999826 B CN108999826 B CN 108999826B CN 201811241081 A CN201811241081 A CN 201811241081A CN 108999826 B CN108999826 B CN 108999826B
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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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Abstract
The application discloses a multifunctional hydraulic integrated valve group of a raise boring machine, which comprises an integrated valve block, wherein a large pump oil inlet, a small pump oil inlet, a main oil return port, a large pump feedback oil port and a small pump feedback oil port are arranged on the integrated valve block; the integrated valve block is internally provided with a big pump working loop connected with the big pump oil inlet and the main oil return port and a small pump working loop connected with the small pump oil inlet and the main oil return port, the rotary proportional valve and the quick propulsion lifting proportional valve are arranged in the big pump working loop in parallel, and the slow propulsion lifting proportional valve and the upper discharging rod control proportional valve are arranged in the small pump working loop in parallel.
Description
Technical Field
The application belongs to the technical field of hydraulic machinery, and particularly relates to a multifunctional hydraulic integrated valve bank of a raise boring machine.
Background
The hydraulic control valve and the system thereof are widely applied to hydraulic transmission and control systems and are used for controlling the direction, pressure, flow and the like of hydraulic fluid. Conventionally, hydraulic control valves based on mainstream applications are various types of hydraulic valves adopting international standards, namely so-called plate type connection, plug-in connection and pipe type connection, namely so-called single element, and valve products of the type of "single element" are single in function per se due to historical reasons, but different in internal structure and external form, so that the discrete type is serious in function, structure and form, and the defect of inconvenience in using an ancient plate is increasingly developed along with the improvement and development of application technology level. Simple stack valves and disc-type multiway valves can be combined with single valves of the same type to control simple hydraulic systems.
At present, the mainstream raise boring machine is required to realize two working modes of drilling and reaming, realize linkage of drilling and propelling so as to meet the working conditions of drilling and receiving and discharging rods, and the double pumps control the free switching of the rapid and slow propelling, and are required to realize the overflow oil supplementing and the water-oil separation of system cooling aiming at the impact in the receiving and discharging rod process. The mutual friction between the rubber pipes is increased due to the fact that high-pressure oil flows through the contact positions of the pipelines, the rubber pipes are easy to wear, and meanwhile the probability of oil leakage is increased due to the fact that the pipe joints are too many.
Patent document No. 201420780112.9 discloses an integrated valve body of a drilling machine linkage hydraulic system, which comprises a valve seat, a forward rotation one-way valve, a reverse rotation one-way valve, a one-way oil return valve and a linkage conversion one-way valve; the valve seat is provided with a forward rotation oil port, a reverse rotation oil port, a chuck oil port, a clamp release oil port, a clamp tight oil port, an oil return port, a one-way oil return valve mounting hole and a plurality of one-way valve mounting holes which are respectively used for accommodating the one-way valves. The integrated valve body is an integrated valve body in a hydraulic system of a rotary drilling rig, and is different from an executive component related to the raise boring rig in the application, although the arrangement of pipelines and valve elements is simplified, and the production, installation and maintenance efficiency is improved.
Disclosure of Invention
The application mainly aims to provide a multifunctional hydraulic integrated valve bank of a raise boring machine, and aims to solve the problems of complex hydraulic structure, large occupied space of the valve bank, multiple assembly pipelines and difficult installation and maintenance of the conventional raise boring machine.
In order to achieve the aim, the application provides a multifunctional hydraulic integrated valve group of a raise boring machine, which comprises an integrated valve block,
the integrated valve block is provided with a large pump oil inlet, a small pump oil inlet, a main oil return port, a large pump feedback oil port and a small pump feedback oil port,
the integrated valve block is also provided with a plurality of hydraulic element mounting holes, and a rotary proportional valve, a quick-propulsion lifting proportional valve, a slow-propulsion lifting proportional valve and an upper-unloading rod control proportional valve are arranged at the hydraulic element mounting holes;
the integrated valve block is internally provided with a large pump working loop connected with the large pump oil inlet and the main oil return port and a small pump working loop connected with the small pump oil inlet and the main oil return port, the rotary proportional valve and the quick propulsion lifting proportional valve are arranged in the large pump working loop in parallel, and the slow propulsion lifting proportional valve and the upper discharging rod control proportional valve are arranged in the small pump working loop in parallel;
the integrated valve block is internally provided with a first feedback oil circuit and a second feedback oil circuit, the first feedback oil circuit branches from the output oil circuit of the rotary proportional valve and the quick-push lifting proportional valve and is connected with a large pump feedback oil port, and the second feedback oil circuit branches from the output oil circuit of the slow-push lifting proportional valve and the upper and lower rod control proportional valve and is connected with a small pump feedback oil port.
Preferably, the plurality of hydraulic element mounting holes are further provided with a large pump source control block and a small pump source control block, the large pump source control block is connected in parallel in the large pump working circuit, and the small pump source control block is connected in parallel in the small pump working circuit;
the large pump source control block comprises a first pressure compensation valve, the first pressure compensation valve is a normally-off two-position two-way valve, when the first pressure compensation valve is conducted, a flow path from a large pump oil inlet to the rotary proportional valve and the quick push-to-lift proportional valve is cut off, the small pump source control block comprises a third overflow valve, and when the third overflow valve is conducted, a flow path from a small pump oil inlet to the quick push-to-lift proportional valve and the upper discharge rod control proportional valve is cut off.
Preferably, a control oil port and a main oil drain port are formed in the integrated valve block, a control oil path connected with the control oil port and an oil drain path connected with the main oil drain port are also formed in the integrated valve block, and control ports of the rotary proportional valve, the quick propulsion and lifting proportional valve, the slow propulsion and lifting proportional valve and the upper and lower rod control proportional valve are connected with the control oil path;
the large pump source control block further comprises a second pressure reducing valve, an inlet of the second pressure reducing valve is connected with the large pump oil inlet, an outlet of the second pressure reducing valve is connected with the control oil way, and an oil drain outlet of the second pressure reducing valve is connected with the oil discharging way.
Preferably, the large pump source control block further comprises a first one-way damping valve group, and the first one-way damping valve group is connected in the first feedback oil path;
the small pump source control block further comprises a second one-way damping valve group, and the second one-way damping valve group is connected in the second feedback oil path.
Preferably, the large pump source control block further comprises a second overflow valve, an oil inlet of the second overflow valve is connected with the large pump feedback oil port, and an oil outlet of the second overflow valve is connected with the oil discharging path.
Preferably, the oil inlet path of the rotary proportional valve is provided with a second pressure compensation valve, the oil inlet path of the quick-propulsion lifting proportional valve is provided with a third pressure compensation valve, and the oil inlet path of the slow-propulsion lifting proportional valve is provided with a fourth pressure compensation valve.
Preferably, the integrated valve block is provided with a water sealing sleeve sealing port, a first unloading rod working oil port and a second unloading rod working oil port, the first unloading rod working oil port and the second unloading rod working oil port are connected with the upper unloading rod control proportional valve, the first check valve and the first pressure reducing valve are further installed at the installation holes of the hydraulic elements, the integrated valve block is internally provided with a water sealing sleeve pressure oil pipeline connected between the second unloading rod working oil port and the water sealing sleeve sealing port, the first check valve and the first pressure reducing valve are connected in series in the water sealing sleeve pressure oil pipeline, and the oil drain port of the first pressure reducing valve is connected with the main oil drain port.
Preferably, the integrated valve block is provided with a gear shifting oil port of the rotary motor, the gear shifting electromagnetic valves are further arranged at the positions of the plurality of hydraulic element mounting holes, the gear shifting electromagnetic valves are two-position three-way electromagnetic valves, the control port of each gear shifting electromagnetic valve is connected with an external electric control signal, the oil inlet of each gear shifting electromagnetic valve is connected with the control oil circuit, and the oil outlet of each gear shifting electromagnetic valve is connected with the gear shifting oil port of the rotary motor.
Preferably, a first oil port and a second oil port are formed in the integrated valve block, a first working oil port of the rapid propulsion and lifting proportional valve is connected with the first oil port, a second working oil port of the rapid propulsion and lifting proportional valve is connected with the second oil port, and a first working port of the slow propulsion and lifting proportional valve is connected with the first oil port and a second working port of the slow propulsion and lifting proportional valve is connected with the second oil port;
the hydraulic component mounting hole department of integrated valve piece still installs first overflow valve, backpressure valve, second check valve and pressure sensor, first overflow valve is connected first working port with between the first hydraulic fluid port, the oil inlet of backpressure valve is connected the second working port, the oil inlet of second check valve is connected first hydraulic fluid port, pressure sensor connects first hydraulic fluid port with between the first working fluid port.
Preferably, a large high-pressure filter is installed at the large pump oil inlet, and a small high-pressure filter is installed at the small pump oil inlet.
Compared with the prior art, the technical scheme of the application has the beneficial effects that:
the integrated valve block is mainly internally provided with a main oil inlet channel connected with a large pump oil inlet and a small pump oil inlet, a main oil return channel connected with a main oil return port, an oil discharge channel connected with a main oil discharge port, a control oil channel connected with a large pump feedback oil port and a small pump feedback oil port, working oil channels of all internal control proportional valves, and communication and auxiliary oil channels of all functions, wherein all the functional oil channels are independent and are locally associated, and all the oil channels are in modularized design, are staggered from horizontal, clear in arrangement, good in overall sense, have more oil channels without disorder, have various regulations and are compact and reasonable in design.
Compared with the traditional drilling machine hydraulic system, the hydraulic system has the advantages that a plurality of hydraulic pipelines are required to be adopted, the hydraulic oil way is complex in design, and the whole hydraulic system is complex in installation and maintenance.
The intelligent control elements such as the rotary proportional valve, the quick-push lifting proportional valve, the slow-push lifting proportional valve, the upper discharging rod control proportional valve, the gear shifting electromagnetic valve, the pressure sensor and the like are concentrated at the upper part and the front upper part of the valve block, so that wiring and centralized control can be facilitated, the elements which need to be regulated such as the large pump source control block, the small pump source control block, the first overflow valve, the unloading valve and the like are concentrated at the upper part and the front part of the valve block, the large high-pressure filter and the small high-pressure filter 1 are arranged at the side surfaces of the two ends of the valve block, the filter element is convenient to replace, the outer oil receiving ports such as P1, P2, R, T, LS1, zd, zr, A1, B1, A2, B2, A3 and B3 are all arranged at the front and the lower part of the valve block, the connection pipe is convenient to concentrate, meanwhile, the oil leakage fault points can be reduced, the whole machine performance can be improved, reasonable and beautiful arrangement of the pipeline can be ensured, the occupied space is small.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a multifunctional hydraulic integrated valve block of a raise boring machine according to an embodiment of the present application;
FIG. 2 is another view angle structure diagram of the multifunctional hydraulic integrated valve block of the raise boring machine of FIG. 1;
FIG. 3 is a hydraulic schematic diagram of the multifunctional hydraulic integrated valve block of the raise boring machine of FIG. 1;
FIG. 4 is a first block diagram of an integrated valve block in the multifunctional hydraulic integrated valve block of the raise boring machine of FIG. 1;
fig. 5 is a second structural diagram of an integrated valve block in the multifunctional hydraulic integrated valve block of the raise boring machine proposed in fig. 1.
The reference numerals of the application illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Large pump source control block | 6-1 | Second one-way damping valve group |
| 2 | Rotary proportional valve | 6-2 | Third overflow valve |
| 3 | Quick-propelling lifting proportional valve | 2-1 | Second pressure compensating valve |
| 4 | Low-speed propulsion lifting proportional valve | 3-1 | Third pressure compensating valve |
| 5 | Upper-unloading rod control proportional valve | 4-1 | Fourth pressure compensating valve |
| 6 | Small pump source control block | P1 | Oil inlet of large pump |
| 7 | Gear shifting electromagnetic valve | P2 | Small pump oil inletMouth(s) |
| 8 | Small high-pressure filter | R | Main oil return port |
| 9 | First one-way valve | T | Main oil drain port |
| 10 | First pressure reducing valve | Z | Control oil port |
| 11 | First overflow valve | LS1 | Feedback oil port of large pump |
| 12 | Back pressure valve | LS2 | Feedback oil port of small pump |
| 13 | Second one-way valve | A1/B1 | Oil port of rotary motor |
| 14 | Pressure sensor | A2/B2 | Oil port of propulsion lifting oil cylinder |
| 15 | Unloading valve | A3/B3 | Oil port of oil cylinder with upper and lower rods |
| 16 | High-pressure filter | Zr | Sealing mouth of water sealing sleeve |
| 17 | Integrated valve block | Zd | Gear shifting oil port of rotary motor |
| 1-1 | First pressure compensating valve | A-3 | A first working oil port |
| 1-2 | Second overflow valve | B-3 | Second working oil port |
| 1-3 | Second pressure reducing valve | A-4 | A first working port |
| 1-4 | First one-way damping valve group | B-4 | A second work port |
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present application may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present application.
The application provides a multifunctional hydraulic integrated valve group of a raise boring machine.
Referring to fig. 1 to 5, the multifunctional hydraulic integrated valve set of the raise boring machine is used in a hydraulic control system of a main machine of the raise boring machine and is mainly used for realizing the actions of rotating a rotary head assembly, drilling a drill rod, unloading the drill rod and the like. The integrated valves includes integrated valve piece 17, has offered a plurality of hydraulic component mounting hole on the integrated valve piece 17 for hydraulic components such as each hydraulic valve of holding installation include: a large pump source control block 1, a rotary proportional valve 2, a rapid propulsion and lifting proportional valve 3, a slow propulsion and lifting proportional valve 4, an upper unloading rod control proportional valve 5, a small pump source control block 6, a gear shifting electromagnetic valve 7, a small high-pressure filter 8, a first check valve 9, a first pressure reducing valve 10, a first overflow valve 11, a back pressure valve 12, a second check valve 13, a pressure sensor 14, an unloading valve 15 and a large high-pressure filter 16.
The integrated valve block 17 is provided with a large pump oil inlet P1, a small pump oil inlet P2, a main oil return port R, a main oil drain port T, a control port Z, a large pump feedback port LS1, a small pump feedback port LS2, a rotary motor port A1/B1, a propulsion lifting oil cylinder port A2/B2, an upper and lower rod oil cylinder port A3/B3, a water sealing sleeve sealing port Zr and a rotary motor gear shifting port Zd,
the big pump oil inlet P1 is externally connected with a big pump, the small pump oil inlet P2 is externally connected with a small pump, the main oil return port R and the main oil drain port T are connected with an oil return tank, a big pump working loop and a small pump working loop which are used for connecting the big pump oil inlet P1, the small pump oil inlet P2, the main oil return port R and the main oil drain port T are arranged in the integrated valve block 17, the big pump source control block 1, the rotary proportional valve 2 and the quick propulsion lifting proportional valve 3 are mutually connected in parallel and are arranged in the big pump working loop, and the slow propulsion lifting proportional valve 4, the upper unloading rod control proportional valve 5 and the small pump source control block 6 are mutually connected in parallel and are arranged in the small pump working loop.
Through the big pump working loop, the pressure oil supplied by the big pump is connected with the rotary motor oil port A1/B1 through the rotary proportional valve 2, the rotary motor oil port A1/B1 is connected with a rotary motor, and the rotary proportional valve 2 is used for controlling the direction of the pressure oil supplied to the rotary motor. The pressure oil supplied by the large pump is also connected with the propulsion lifting oil cylinder oil port A2/B2 through the rapid propulsion lifting proportional valve 3, the propulsion lifting oil cylinder oil port A2/B2 is connected with the propulsion lifting oil cylinder, and the rapid propulsion lifting proportional valve 3 is used for controlling the direction of the pressure oil supplied to the propulsion oil cylinder.
And through the small pump working loop, the pressure oil supplied by the small pump is connected with the oil port A2/B2 of the propulsion lifting oil cylinder through the slow propulsion lifting proportional valve 4, and the slow propulsion lifting proportional valve 4 is used for controlling the direction of the pressure oil supplied to the propulsion oil cylinder. The pressure oil supplied by the small pump is connected with the oil port A3/B3 of the upper unloading rod oil cylinder through the upper unloading rod control proportional valve 5, and the oil port A3/B3 of the upper unloading rod oil cylinder is connected with the upper unloading rod oil cylinder and used for controlling hydraulic oil supplied to the upper unloading rod cylinder.
A first feedback oil way and a second feedback oil way are further arranged in the integrated valve block, and the first feedback oil way is branched from the output oil ways of the rotary proportional valve 2 and the quick-propulsion lifting proportional valve 3 and is connected with a large pump feedback oil port LS 1; the second feedback oil path branches from the output oil paths of the slow-speed propulsion lifting proportional valve 4 and the upper and lower rod control proportional valve 5 and is connected with the small pump feedback port LS 2. The large pump feedback port LS1 is connected with a feedback control port of the large pump so that the large pump controls the displacement of the large pump according to the load pressure signals of corresponding executive elements (a rotary motor and a pushing cylinder), and the small pump feedback port LS2 is connected with a feedback control port of the small pump so that the small pump controls the displacement of the small pump according to the load pressure signals of corresponding executive elements (the pushing cylinder and an upper unloading rod cylinder).
Further, the large pump source control block 1 includes: the hydraulic pressure-reducing valve comprises a first pressure compensation valve 1-1, a second overflow valve 1-2, a second pressure-reducing valve 1-3 and a first one-way damping valve group 1-4. The first pressure compensating valve 1-1 is a normally-off two-position two-way valve, the first pressure compensating valve is used for limiting the highest pressure of the main oil way, when the pressure of hydraulic oil supplied by the big pump is lower than the limiting pressure of the first pressure compensating valve, the big pump oil inlet P1 normally supplies oil to the rotary proportional valve 2 and the quick propulsion lifting proportional valve 3, and when the pressure of hydraulic oil supplied by the big pump is higher than the limiting pressure of the first pressure compensating valve, the hydraulic oil directly returns to the main oil return port R, namely the hydraulic oil is not supplied to the rotary proportional valve 2 and the quick propulsion lifting proportional valve 3.
The oil inlet of the second overflow valve 1-2 is connected with the large pump feedback oil port LS1, the oil outlet of the second overflow valve 1-2 is connected with the main oil drain port T, and when the pressure of hydraulic oil in the first feedback oil path is too high, the second overflow valve 1-2 discharges oil to play a role in limiting the highest pressure of the first feedback oil path.
The integrated valve block 17 is internally provided with a control oil way communicated with the control oil port Z, an oil inlet of the second pressure reducing valve 1-3 is connected with the oil inlet P1 of the big pump, an oil outlet of the second pressure reducing valve 1-3 is connected with the control oil way, control oil is supplied to control ports of the rotary proportional valve 2, the quick propulsion lifting proportional valve 3, the slow propulsion lifting proportional valve 4 and the upper unloading rod control proportional valve 5 through the control oil way, and an oil drain port of the second pressure reducing valve 1-3 is connected with the main oil drain port T, so that the second pressure reducing valve 1-3 reduces the pressure in a working loop of the big pump to a set pressure, and then pilot pressure for the action of the internal control proportional valve is used.
The first one-way damping valve group 1-4 is arranged in the first feedback oil path, branches from the output oil path of the rotary proportional valve 2 and the quick propulsion lifting proportional valve 3, and is connected with the large pump feedback oil port LS1 after passing through the first one-way damping valve group 1-4, and the first one-way damping valve group 1-4 is not only used for rectifying feedback pressure, but also used for limiting feedback oil flow.
Further, an unloading valve 15 is connected in parallel with the first pressure compensating valve 1-1.
Further, the small pump source control block 6 includes: a second one-way damping valve group 6-1 and a third overflow valve 6-2. The second one-way damping valve set 6-1 is arranged in the second feedback oil path, branches from the output oil paths of the slow-speed propulsion lifting proportional valve 4 and the upper unloading rod control proportional valve 5, and is connected with the small pump feedback port LS2 after passing through the second one-way damping valve set 6-1, and the second one-way damping valve set 6-1 is also used for rectifying feedback pressure and limiting feedback oil flow.
The oil inlet of the third overflow valve 6-2 is connected with the small pump oil inlet P2, the oil outlet of the third overflow valve 6-2 is connected with the main oil return port R, and is used for limiting the highest pressure of an oil path supplied by the small pump, when the pressure of hydraulic oil supplied by the small pump is lower than the limiting pressure of the third overflow valve 6-2, the small pump oil inlet P2 supplies oil to the slow-speed pushing lifting proportional valve 4 and the upper-unloading rod control proportional valve 5 normally, and when the pressure of hydraulic oil supplied by the small pump is higher than the limiting pressure of the third overflow valve 6-2, hydraulic oil returns to the main oil return port R directly, namely, the slow-speed pushing lifting proportional valve 4 and the upper-unloading rod control proportional valve 5 are not supplied with oil.
Further, a second pressure compensation valve 2-1 is arranged on the oil inlet path of the rotary proportional valve 2, a third pressure compensation valve 3-1 is arranged on the oil inlet path of the quick propulsion and lifting proportional valve 3, a fourth pressure compensation valve 4-1 is arranged on the oil inlet path of the slow propulsion and lifting proportional valve 4, and the three pressure compensation valves are used for compensating the pressure difference of the two groups of valves when working simultaneously, and stabilizing the pressure difference of the front valve core and the rear valve core simultaneously, so that the flow and the speed are stable when working.
Further, the first check valve 9 and the first pressure reducing valve 10 are connected in a water jacket pressure oil pipeline between one of the oil ports B3 of the upper and lower rod oil cylinders and the water jacket sealing port Zr, and the oil drain port of the first pressure reducing valve 10 is connected with the main oil drain port T. The sealing port Zr of the water sealing sleeve is connected with the pressure oil port of the water sealing sleeve, the main shaft of the rotary motor drives the center, the lower part of the main shaft is connected with the drill rod sleeve, the drill rod sleeve is sleeved with the drill hole for drilling, the center of the water sealing sleeve is connected with slag flushing water, slag flushing is carried out from the center of the main shaft to the drill bit through the center of the drill rod, the motor and the center of the main shaft are separated by the sealing ring, after oil and water are prevented from being mixed, hydraulic oil is fed, in order to increase the sealing effect, a stream of pressure oil is led from the drill hole in the water sealing sleeve to lead the stream of pressure oil to be always pressed onto the sealing ring, the oil and the water are firmly pressed, the oil are separated, meanwhile, an external energy accumulator is used for maintaining pressure, and sealing failure is increased.
Further, the shifting electromagnetic valve 7 is a two-position three-way electromagnetic valve, a control port of the shifting electromagnetic valve 7 is connected with an external electric control signal, an oil inlet of the shifting electromagnetic valve 7 is connected with the control oil way, and an oil outlet of the shifting electromagnetic valve 7 is connected with a shifting oil port Zd of the rotary motor. The gear shifting oil port Zd of the rotary motor is connected with the gear shifting oil port of the rotary motor and is used for realizing the gear shifting function of the rotary motor.
Further, the propulsion and lifting oil cylinder oil port A2/B2 comprises a first oil port A2 and a second oil port B2, the rapid propulsion and lifting proportional valve 3 is provided with a first working oil port A-3 and a second working oil port B-3 which are respectively connected with the first oil port A2 and the second oil port B2, and the slow propulsion and lifting proportional valve 4 is provided with a first working port A-4 and a second working port B-4 which are respectively connected with the first oil port A2 and the second oil port B2. The first overflow valve 11 is arranged between the first working port A-4 and the first oil port A2, an oil inlet of the back pressure valve 12 is connected with the second working port B-4, and an oil outlet of the back pressure valve 12 is connected with the main oil return port R. The oil inlet of the second one-way valve 13 is connected with the first oil port A2, and the pressure sensor 14 is further arranged between the first oil port A2 and the rapid propulsion and lifting proportional valve 3.
Further, a large high-pressure filter 16 is installed at the large pump oil inlet P1, and a small high-pressure filter 8 is installed at the small pump oil inlet P2.
Therefore, a plurality of subsystems such as a large pump source control system, a small pump source control system, a power head rotation control system, a fast and slow propulsion lifting system, a propulsion overflow oil supplementing back pressure system, an upper and lower rod control system, a water sealing sleeve sealing system, a rotation gear shifting control system and the like are integrated in the whole integrated valve group.
The large pump source control system is used for supplying oil to a large pump oil inlet P1 from an external large pump, supplying oil to a rotary system and a quick propulsion lifting system after being connected with a large pump source control block 1 through a large high-pressure filter 16, simultaneously connecting an unloading valve 15 in parallel, providing valve core action control oil for the whole valve group by the large pump source control system, simultaneously receiving feedback oil paths of the quick propulsion lifting proportional valve 3 and the rotary proportional valve 2, and feeding back to the external large pump through a large pump feedback oil port LS1 after rectification.
The power head rotation control system receives oil supply of the large pump source control block 1, an external electric signal controls the rotation proportional valve 2 to drive the external rotation power head to rotate positively and negatively through the working oil way A1/B1, and meanwhile feedback oil of the working oil way A1/B1 is fed back to the large pump source control block 1.
The quick and slow propulsion and lifting system respectively receives oil supply of the large pump source control block 1 and the small pump source control block 6, controls the quick propulsion and lifting proportional valve 3 and the slow propulsion and lifting proportional valve 4 to propel and lift the oil cylinder through the working oil ways A2/B2 by external electric signals, and feeds back feedback oil of the working oil ways A2/B2 to the large pump source control block 1 and the small pump source control block 6.
The upper and lower rod control system receives oil supply of the small pump source control block 6, the external electric signal controls the upper and lower rod control proportional valve 5 to control clamping and loosening of the rod unloading oil cylinder through the working oil way A3/B3, and meanwhile feedback oil of the working oil way A3/B3 is fed back to the small pump source control block 6.
The water sealing sleeve sealing system is characterized in that oil is supplied from the position B3 and is decompressed through the first decompression valve 10, and then is connected to a water sealing sleeve sealing port Zr through the first one-way valve 9, so that the sealing function is realized.
In the rotary gear shifting control system, oil is supplied by a control oil way, a gear shifting electromagnetic valve 7 is controlled by an external electric signal, and the oil way is connected to a gear shifting oil port Zd of a rotary motor, so that a rotary gear shifting function is realized.
The back pressure system for overflow oil supplementing is propelled, an A2 oil way supplements oil from a main oil return port R through a second one-way valve 13, B2 overflows through a main oil return port R of a first overflow valve 11R, the A2 oil way is connected with a back pressure valve 12 in series, and the back pressure is detected by a pressure sensor 14.
The small pump source control system is characterized in that an external small pump supplies oil to a small pump oil inlet P2, is connected with a small pump source control block 6 through a small high-pressure filter 8 and supplies oil to an upper unloading rod system and a low-speed propulsion lifting system, and simultaneously receives feedback oil paths of the low-speed propulsion lifting proportional valve 4 and the upper unloading rod proportional valve 5 to rectify and then feeds back to the small pump through a small pump feedback oil port LS 2.
And the R oil way collects the oil return from the positions of the large pump source control block 1, the small pump source control block 6, the rotary proportional valves 2 and 3, the quick propulsion lifting proportional valve 3, the slow propulsion lifting proportional valve 4 and the upper and lower rod control proportional valve 5, and is connected with an external oil return tank after converging.
The T oil way is used for collecting the oil leakage and converging at the positions of the large pump source control block 1, the small pump source control block 6, the rotary proportional valves 2 and 3, the quick propulsion and lifting proportional valve 3, the slow propulsion and lifting proportional valve 4, the upper and lower rod control proportional valve 5, the gear shifting electromagnetic valve 7 and the first pressure reducing valve 10, and then the oil leakage and converging positions are externally connected with an oil return tank.
The design mechanism of the integrated valve block 17 is shown in fig. 2, and is used for installing No. 1-16 hydraulic elements, and designing and punching holes according to the principle of fig. 3, wherein a main oil inlet channel connected with a large pump oil inlet P1 and a small pump oil inlet P2, a main oil return channel connected with a main oil return port R, an oil discharge channel connected with a main oil discharge port T, a control oil channel connected with a large pump feedback oil port LS1 and a small pump feedback oil port LS2, working oil channels such as A, B, and communication and auxiliary oil channels of all functions are independent and have local association, all the oil channels are in modularized design, are staggered from horizontal, clear in arrangement, good in overall sense, have many oil channels without disorder, are in a seal, and are compact and reasonable in design.
The intelligent control elements such as the rotary proportional valve 2, the quick propulsion lifting proportional valve 3, the slow propulsion lifting proportional valve 4, the upper and lower lever control proportional valve 5, the gear shifting electromagnetic valve 7, the pressure sensor 14 and the like are concentrated on the upper part and the front upper part of the valve block, so that wiring and centralized control can be facilitated, the large pump source control block 1, the small pump source control block 6, the first overflow valve 11, the unloading valve 15 and other elements needing to be regulated are concentrated on the upper part and the front part of the valve block, the regulation can be facilitated, the large high-pressure filter 8 and the small high-pressure filter 16 are positioned on the side surfaces at two ends of the valve block, the filter element can be conveniently replaced, the outer oil receiving ports such as P1, P2, R, T, LS, zd, zr, A1, B1, A2, B2, A3 and B3 are all arranged on the front and below of the valve block, the connection pipe is convenient to concentrate, meanwhile, the oil leakage fault point can be reduced, the whole machine performance can be improved, the reasonable and beautiful arrangement of the pipeline can be ensured, the occupied space is small, and the space is saved.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structural changes made by the description of the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the application.
Claims (6)
1. The multifunctional hydraulic integrated valve group of the raise boring machine is characterized by comprising an integrated valve block (17),
the integrated valve block (17) is provided with a large pump oil inlet (P1), a small pump oil inlet (P2), a main oil return port (R), a large pump feedback oil port (LS 1) and a small pump feedback oil port (LS 2),
the integrated valve block (17) is also provided with a plurality of hydraulic element mounting holes, and a rotary proportional valve (2), a rapid propulsion and lifting proportional valve (3), a slow propulsion and lifting proportional valve (4) and an upper and lower rod control proportional valve (5) are arranged at the positions of the plurality of hydraulic element mounting holes;
a large pump working loop connected with the large pump oil inlet (P1) and the main oil return port (R) and a small pump working loop connected with the small pump oil inlet (P2) and the main oil return port (R) are arranged in the integrated valve block (17), the rotary proportional valve (2) and the quick propulsion and lifting proportional valve (3) are arranged in the large pump working loop in parallel, and the slow propulsion and lifting proportional valve (4) and the upper unloading rod control proportional valve (5) are arranged in the small pump working loop in parallel;
a first feedback oil way and a second feedback oil way are further arranged in the integrated valve block (17), the first feedback oil way is branched from the output oil ways of the rotary proportional valve (2) and the quick propulsion lifting proportional valve (3) and is connected with a large pump feedback oil port (LS 1), the second feedback oil way is branched from the output oil ways of the slow propulsion lifting proportional valve (4) and the upper discharging rod control proportional valve (5) and is connected with a small pump feedback oil port (LS 2), a large pump source control block (1) and a small pump source control block (6) are further arranged at the mounting holes of the hydraulic elements, the large pump source control block (1) is connected in parallel in the large pump working loop, and the small pump source control block (6) is connected in parallel in the small pump working loop;
the large pump source control block comprises a first pressure compensation valve (1-1), the first pressure compensation valve (1-1) is a normally-off two-position two-way valve, when the first pressure compensation valve (1-1) is conducted, a flow path from a large pump oil inlet (P1) to the rotary proportional valve (2) and the quick push-up proportional valve (3) is cut off, the small pump source control block (6) comprises a third overflow valve (6-2), and when the third overflow valve (6-2) is conducted, a flow path from a small pump oil inlet (P2) to the slow push-up proportional valve (4) and the upper discharge rod control proportional valve (5) is cut off;
the integrated valve block (17) is provided with a control oil port (Z) and a main oil drain port (T), a control oil way connected with the control oil port (Z) and an oil drain way connected with the main oil drain port (T) are also arranged in the integrated valve block (17), and the control ports of the rotary proportional valve (2), the quick propulsion and lifting proportional valve (3), the slow propulsion and lifting proportional valve (4) and the upper and lower rod control proportional valve (5) are connected with the control oil way;
the large pump source control block (1) further comprises a second pressure reducing valve (1-3), an inlet of the second pressure reducing valve (1-3) is connected with the large pump oil inlet (P1), an outlet of the second pressure reducing valve (1-3) is connected with the control oil way, and an oil drain port of the second pressure reducing valve (1-3) is connected with the oil drain way;
the large pump source control block (1) further comprises a first one-way damping valve group (1-4), and the first one-way damping valve group (1-4) is connected in the first feedback oil way;
the small pump source control block (6) further comprises a second one-way damping valve group (6-1), and the second one-way damping valve group (6-1) is connected in the second feedback oil path;
the large pump source control block further comprises a second overflow valve (1-2), an oil inlet of the second overflow valve (1-2) is connected with the large pump feedback oil port (LS 1), and an oil outlet of the second overflow valve (1-2) is connected with an oil leakage path.
2. The multifunctional hydraulic integrated valve group of the raise boring machine according to claim 1, characterized in that a second pressure compensation valve (2-1) is arranged on an oil inlet path of the rotary proportional valve (2), a third pressure compensation valve (3-1) is arranged on an oil inlet path of the quick-push lifting proportional valve (3), and a fourth pressure compensation valve (4-1) is arranged on an oil inlet path of the slow-push lifting proportional valve (4).
3. The multifunctional hydraulic integrated valve group of the raise boring machine according to claim 1, characterized in that a water sealing sleeve sealing port (Zr), a first unloading rod working oil port (A3) and a second unloading rod working oil port (B3) which are connected with the upper unloading rod control proportional valve (5) are arranged on the integrated valve block (17), a first check valve (9) and a first pressure reducing valve (10) are further arranged at the installation holes of the hydraulic elements, a water sealing sleeve pressure pipeline which is connected between the second unloading rod working oil port (B3) and the water sealing sleeve sealing port (Zr) is arranged in the integrated valve block (17), the first check valve (9) and the first pressure reducing valve (10) are connected in the water sealing sleeve pressure oil pipeline in series, and a drain port of the first pressure reducing valve (10) is connected with the main drain port (T).
4. The multifunctional hydraulic integrated valve group of the raise boring machine according to claim 1, characterized in that a rotary motor gear shifting oil port (Zd) is arranged on the integrated valve block (17), a gear shifting electromagnetic valve (7) is further arranged at the positions of the plurality of hydraulic element mounting holes, the gear shifting electromagnetic valve (7) is a two-position three-way electromagnetic valve, a control port of the gear shifting electromagnetic valve (7) is connected with an external electric control signal, an oil inlet of the gear shifting electromagnetic valve (7) is connected with the control oil path, and an oil outlet of the gear shifting electromagnetic valve (7) is connected with the gear shifting oil port of the rotary motor.
5. The multifunctional hydraulic integrated valve group of the raise boring machine according to claim 4, characterized in that a first oil port (A2) and a second oil port (B2) are formed in the integrated valve block (17), a first working oil port (A-3) of the quick-push lifting proportional valve (3) is connected with the first oil port (A2), a second working oil port (B-3) is connected with the second oil port (B2), and a first working port (A-4) of the quick-push lifting proportional valve (4) is connected with the first oil port (A2) and a second working port (B-4) is connected with the second oil port (B2);
the hydraulic component mounting hole department of integrated valve piece (17) still installs first overflow valve (11), backpressure valve (12), second check valve (13) and pressure sensor (14), first overflow valve (11) are connected first working opening (A-4) with between first hydraulic fluid port (A2), the oil inlet of backpressure valve (12) is connected second working opening (B-4), the oil inlet of second check valve (13) is connected first hydraulic fluid port (A2), pressure sensor (14) are connected first hydraulic fluid port (A2) with between first working fluid port (A-3).
6. The multifunctional hydraulic integrated valve group of the raise boring machine according to claim 4, characterized in that a large high-pressure filter (16) is installed at the large pump oil inlet (P1), and a small high-pressure filter (8) is installed at the small pump oil inlet (P2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811241081.9A CN108999826B (en) | 2018-10-24 | 2018-10-24 | Multifunctional hydraulic integrated valve group of raise boring machine |
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| CN201811241081.9A CN108999826B (en) | 2018-10-24 | 2018-10-24 | Multifunctional hydraulic integrated valve group of raise boring machine |
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| CN108999826B true CN108999826B (en) | 2023-09-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110410373B (en) * | 2019-08-26 | 2024-07-09 | 宁波市奉化溪口威尔特制泵厂 | Multi-way valve block for hydraulic station |
| CN110425199B (en) * | 2019-08-26 | 2024-07-09 | 宁波市奉化溪口威尔特制泵厂 | Energy-saving variable-frequency hydraulic station |
| CN111043091A (en) * | 2019-10-30 | 2020-04-21 | 润琛液压机械南通有限公司 | Control valve set of mower |
| IT201900020468A1 (en) * | 2019-11-06 | 2021-05-06 | Faster Srl | INTEGRATED MULTICONNECTION HYDRAULIC GROUP |
| CN111305790B (en) * | 2019-12-31 | 2024-09-17 | 深圳市弗赛特科技股份有限公司 | Wellhead safety three-valve control integrated module |
| CN113107915B (en) * | 2021-03-17 | 2022-11-01 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic control valve group and anchor rod drilling machine |
| CN113357215A (en) * | 2021-06-25 | 2021-09-07 | 江苏谷登重型机械装备科技有限公司 | Hydraulic multi-way valve for static pile press |
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