CN114876898A - Heading machine and composite propelling hydraulic system thereof - Google Patents
Heading machine and composite propelling hydraulic system thereof Download PDFInfo
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- CN114876898A CN114876898A CN202210545111.5A CN202210545111A CN114876898A CN 114876898 A CN114876898 A CN 114876898A CN 202210545111 A CN202210545111 A CN 202210545111A CN 114876898 A CN114876898 A CN 114876898A
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- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 230000005641 tunneling Effects 0.000 claims abstract description 21
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract description 17
- 238000010276 construction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
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Classifications
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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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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
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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
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
- F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a composite propulsion hydraulic system which comprises a plurality of composite propulsion assemblies distributed along the circumferential direction of a machine body of a heading machine, wherein each composite propulsion assembly comprises an oil pump, a propulsion oil cylinder communicated with an oil outlet of the oil pump, a reversing valve connected between the oil pump and the propulsion oil cylinder and a controller in signal connection with the oil pump, the propulsion oil cylinder is used for outputting axial propulsion force when the heading machine is in a propulsion mode and outputting pressing force to a pipe piece when the pipe piece is in a splicing mode, the reversing valve is used for controlling the telescopic state switching of a piston rod of the propulsion oil cylinder, and the controller is used for sending working condition control signals to the corresponding oil pump. The invention can reduce the pressure loss and the energy loss of the oil pump, improve the energy saving performance of a hydraulic system and the control precision of a tunneling attitude, realize the free partition function of the propulsion oil cylinder, enable the tunneling machine to finish the direction adjustment work within a short distance, realize the splicing and pushing synchronization function and improve the construction efficiency. The invention also discloses a heading machine which has the beneficial effects as described above.
Description
Technical Field
The invention relates to the technical field of heading machines, in particular to a composite propelling hydraulic system. The invention also relates to a heading machine.
Background
Many tunnels need to be built through development machines in basic projects such as subways, highways, railways, water diversion and the like.
In order to realize the tunneling operation of the tunneling machine in the tunnel, a propelling hydraulic system is generally arranged on the machine body of the tunneling machine. The propelling hydraulic system mainly propels the machine body to advance in the tunnel in a propelling oil cylinder mode, and in order to ensure that the heading machine has enough propelling force, a plurality of propelling oil cylinders are generally arranged on the machine body at the same time.
At present, in the prior art, a propulsion hydraulic system of a heading machine generally adopts an oil pump to supply oil to all propulsion cylinders, and in order to meet the pressure requirements of all the propulsion cylinders, the oil pump uniformly outputs oil pressure with the same size to all the propulsion cylinders, so that the oil pump always supplies oil to the system with the maximum load of all the propulsion cylinders, and further energy loss is generated on the propulsion cylinders with lower actual working pressure, and not only energy consumption is larger, but also the efficiency of the hydraulic system is reduced. In addition, each propulsion cylinder in the traditional heading machine propulsion hydraulic system is generally designed in a fixed partition, for example, the propulsion cylinder is divided into four or more partitions, namely, the partition of the propulsion cylinder at any position is fixed and cannot be changed, the working states of the propulsion cylinders in the same partition are kept consistent, so that the propulsion hydraulic system in the fixed partition cannot rapidly complete the fine steering operation of the heading machine in a short distance, and the heading attitude of the heading machine is not accurately controlled.
Therefore, the technical problems faced by those skilled in the art are to reduce the pressure loss and energy loss of the oil pump, improve the energy saving performance of the hydraulic system, and improve the control precision of the tunneling attitude of the tunneling machine.
Disclosure of Invention
The invention aims to provide a composite propulsion hydraulic system which can reduce the pressure loss and the energy loss of an oil pump, improve the energy saving performance of the hydraulic system and simultaneously improve the control precision of the tunneling attitude of a tunneling machine. Another object of the present invention is to provide a heading machine.
In order to solve the technical problem, the invention provides a composite propulsion hydraulic system which comprises a plurality of composite propulsion assemblies distributed along the circumferential direction of a machine body of a heading machine, wherein each composite propulsion assembly comprises an oil pump, a propulsion oil cylinder communicated with an oil outlet of the oil pump, a reversing valve connected between the oil pump and the propulsion oil cylinder, and a controller in signal connection with the oil pump, the propulsion oil cylinder is used for outputting axial propulsion force when the heading machine is in a propulsion mode, the reversing valve is used for controlling the telescopic state switching of a piston rod of the propulsion oil cylinder, and the controller is used for adjusting working condition control signals sent to the corresponding oil pump in real time according to a target heading posture of the machine body.
Preferably, the controller is configured to send a pressure control signal and/or a flow control signal to the corresponding oil pump according to a target tunneling attitude of the body.
Preferably, the oil pump further comprises a first pressure sensor communicated with an oil outlet of the oil pump and used for detecting the actual oil outlet pressure of the oil pump, and the first pressure sensor is in signal connection with the controller so that the controller corrects a pressure control signal sent to the oil pump.
Preferably, the flow control device further comprises a flow sensor which is communicated with an oil outlet of the oil pump and is used for detecting the actual oil outlet flow, and the flow sensor is in signal connection with the controller so that the controller corrects the flow control signal sent to the oil pump.
Preferably, the oil pump further comprises a feedback signal cable connected between the oil pump and the controller and used for feeding back the working condition control signal received by the oil pump to the controller.
Preferably, the hydraulic control system further comprises a second pressure sensor which is communicated with the rodless cavity of the propulsion oil cylinder and is used for detecting the oil pressure of the propulsion oil cylinder
Preferably, the device further comprises a stroke sensor for detecting the extension stroke of the piston rod of the propulsion oil cylinder.
Preferably, the propulsion oil cylinder is further used for outputting a pressing force in the radial direction when the heading machine is in a segment assembling mode, and the controller is further used for adjusting working condition control signals sent to the corresponding oil pumps in real time according to a segment assembling process.
The invention also provides a heading machine which comprises a machine body and a composite propelling hydraulic system arranged on the machine body, wherein the composite propelling hydraulic system is specifically any one of the composite propelling hydraulic systems.
The composite propelling hydraulic system mainly comprises a plurality of composite propelling components, wherein each composite propelling component is distributed along the circumferential direction of a machine body of the heading machine, and each composite propelling component operates independently. Each composite propulsion assembly comprises an oil pump, a propulsion oil cylinder, a reversing valve and a controller. Wherein, the oil pump is the power part, mainly used output oil pressure. The propelling oil cylinder is communicated with an oil outlet of the oil pump and is mainly used for outputting power through linear motion of the piston rod in the cylinder body under the action of pressure oil of the oil pump, so that propelling force along the axial direction of the machine body is output when the heading machine is in a propelling mode, and the machine body advances along a tunnel. The reversing valve is connected between the oil pump and the propulsion oil cylinder and is mainly used for controlling the telescopic state switching of a piston rod of the propulsion oil cylinder so as to realize the reversing output operation of the propulsion oil cylinder. The controller is in signal connection with the oil pump and is mainly used for sending working condition control signals to the corresponding oil pump according to the target tunneling attitude of the machine body so as to control the working condition of the corresponding oil pump and further control the running state of the propulsion oil cylinder corresponding to the oil pump. Therefore, when the heading machine is in a propelling mode, each composite propelling assembly operates independently, a controller in each composite propelling assembly can independently control the working condition of the corresponding oil pump and the operating state of the propelling cylinder, a single-pump single-cylinder control mode is further realized, the pressure of each oil pump is determined by the load of the corresponding propelling cylinder, the pressure of all the oil pumps is prevented from being kept at the maximum load of the propelling cylinders, the pressure loss and the energy loss of the oil pumps can be reduced, and the energy saving performance of a hydraulic system is improved. And under the control of the controller, each propulsion oil cylinder can flexibly adjust the running state in real time, so that the control precision of the tunneling attitude of the tunneling machine can be improved.
In a preferred embodiment, because each composite propulsion assembly operates independently, the partition to which the propulsion oil cylinder in each composite propulsion assembly belongs is not fixed, so that the propulsion oil cylinders receiving the same working condition control signal can be assigned to the same partition by sending the working condition control signal to each propulsion oil cylinder through the controller, and flexible partition of all the propulsion oil cylinders is realized. In another preferred embodiment, the thrust cylinders can also be used for outputting pressing force in the radial direction when the heading machine is in a segment splicing mode, so that the working mode of each thrust cylinder is controlled by the controller, part of the thrust cylinders output the thrust force, and the other part of the thrust cylinders output the pressing force, thereby realizing the pushing and splicing synchronization function.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a block diagram of each composite propulsion assembly when the heading machine is in a propulsion mode or a segment erection mode.
Figure 3 is another partition block diagram of each composite propulsion assembly when the roadheader is in a propulsion mode or a segment erector mode.
Fig. 4 is a partition structure diagram of each composite propulsion assembly when the heading machine is in a push-splicing synchronization mode.
Wherein, in fig. 1-4:
the device comprises a composite propulsion assembly-1, an oil pump-2, a propulsion oil cylinder-3, a reversing valve-4, a controller-5, a first pressure sensor-6, a flow sensor-7, a feedback signal cable-8, a second pressure sensor-9 and a stroke sensor-10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In one embodiment provided by the invention, the composite propulsion hydraulic system mainly comprises a plurality of composite propulsion assemblies 1, each composite propulsion assembly 1 is distributed along the circumferential direction of the machine body of the heading machine, and each composite propulsion assembly 1 operates independently.
Each composite propulsion assembly 1 comprises an oil pump 2, a propulsion cylinder 3, a reversing valve 4 and a controller 5.
The oil pump 2 is a power unit and is mainly used for outputting oil pressure.
The propulsion oil cylinder 3 is communicated with an oil outlet of the oil pump 2 and is mainly used for outputting power through linear motion of the piston rod in the cylinder body under the action of pressure oil of the oil pump 2, so that propulsion force along the axial direction of the machine body is output when the heading machine is in a propulsion mode, and the machine body advances along a tunnel.
The reversing valve 4 is connected between the oil pump 2 and the propulsion oil cylinder 3 and is mainly used for controlling the telescopic state switching of a piston rod of the propulsion oil cylinder 3, so that the reversing output operation of the propulsion oil cylinder 3 is realized.
The controller 5 is in signal connection with the oil pump 2, and is mainly used for sending a working condition control signal to the corresponding oil pump 2 according to the target tunneling attitude of the machine body so as to control the working condition of the corresponding oil pump 2 and further control the running state of the propulsion cylinder 3 corresponding to the oil pump 2.
So, when the entry driving machine is in the propulsion mode, because each compound propulsion subassembly 1 independently operates respectively, consequently, the operating mode of the oil pump 2 that corresponds and the running state of propulsion cylinder 3 all can be independently controlled to controller 5 in every compound propulsion subassembly 1, and then realize the single-pump single cylinder control mode, the pressure of every oil pump 2 is decided by the load of its propulsion cylinder 3 that corresponds, thereby avoid all the pressure of oil pump 2 all to keep at the maximum load of propulsion cylinder 3, and then can reduce the pressure loss and the energy loss of oil pump 2, improve hydraulic system energy conservation nature. Moreover, under the control of the controller 5, the operation state of each propulsion cylinder 3 can be flexibly adjusted in real time, so that the tunneling attitude control precision of the tunneling machine can be improved.
In some embodiments, since each composite propulsion assembly 1 operates independently, the partition to which the propulsion cylinder 3 in each composite propulsion assembly 1 belongs is not fixed, and thus, the propulsion cylinders 3 receiving the same working condition control signal can be assigned to the same partition by sending the working condition control signal to each propulsion cylinder 3 through the controller 5, thereby flexibly partitioning all the propulsion cylinders 3. In some embodiments, the thrust cylinders 3 may also be configured to output a pressing force in a radial direction when the heading machine is in a segment splicing mode, so that the controller 5 controls the working mode of each thrust cylinder 3 to enable a part of the thrust cylinders 3 to output a thrust force and another part of the thrust cylinders 3 to output a pressing force, thereby implementing a pushing and splicing synchronization function.
In an alternative embodiment of the controller 5, the controller 5 is mainly configured to send a pressure control signal or a flow control signal to the corresponding oil pump 2 according to the target tunneling attitude of the fuselage, and may also send the pressure control signal and the flow control signal to the oil pump 2 at the same time. With this arrangement, the controller 5 can control the pressure and flow rate of the oil pump 2, and thus the propulsion or pressing force, and the propulsion or movement speed of the propulsion cylinder 3.
In order to further improve the control precision of the controller 5 on the working condition of the oil pump 2, a first pressure sensor 6 is additionally arranged in the embodiment. Specifically, the first pressure sensor 6 is communicated with an oil outlet of the oil pump 2, and is mainly used for detecting the actual oil outlet pressure of the oil pump 2. Meanwhile, the first pressure sensor 6 is in signal connection with the controller 5, so that detection data of the first pressure sensor 6 is sent to the controller 5 in real time, the controller 5 obtains pressure feedback, and a pressure control signal sent to the oil pump 2 is corrected according to the pressure feedback, thereby improving pressure control accuracy.
Similarly, a flow sensor 7 is additionally arranged in the embodiment. Specifically, the flow sensor 7 is communicated with an oil outlet of the oil pump 2, and is mainly used for detecting the actual oil outlet flow of the oil pump 2. Meanwhile, the flow sensor 7 is in signal connection with the controller 5, so that detection data of the flow sensor 7 is sent to the controller 5 in real time, the controller 5 obtains flow feedback, and a flow control signal sent to the oil pump 2 is corrected according to the flow feedback, so that the flow control precision is improved.
Furthermore, the present embodiment is additionally provided with a feedback signal cable 8. Specifically, this feedback signal cable 8 is connected between oil pump 2 and controller 5, mainly used after oil pump 2 receives the operating mode control signal that controller 5 sent, feeds back this operating mode control signal to controller 5 department again to guarantee the signal precision that oil pump 2 received, and then reduce control error.
In addition, the second pressure sensor 9 is added in the embodiment. Specifically, the second pressure sensor 9 is communicated with the rodless cavity of the propulsion cylinder 3, and is mainly used for detecting the oil pressure in the rodless cavity of the propulsion cylinder 3.
Furthermore, the present embodiment is additionally provided with the stroke sensor 10. Specifically, the stroke sensor 10 is mainly used for detecting the extension stroke of the piston rod of the thrust cylinder 3.
In an alternative embodiment of the propulsion cylinders 3, 20 propulsion cylinders 3 are simultaneously distributed along the circumferential direction of the fuselage, and each propulsion cylinder 3 is uniformly distributed in the circumferential direction of the fuselage, that is, two adjacent propulsion cylinders 3 have the same included angle between the centers of circles. Taking 20 thrust cylinders 3 as an example, an 18-degree circle center included angle is formed between two adjacent thrust cylinders 3. Of course, the number of the thrust cylinders 3 is not limited to 20, and the rest is, for example, less than 20, such as 18, 15, 12, etc., or more than 20, such as 24, 25, 30, 36, etc.
In view of the fact that when a traditional heading machine is used for heading, the whole ring of segments needs to be assembled after being pushed forward for a certain distance, heading is started after assembly is finished, and the two processes of pushing and assembly can only be carried out alternately but cannot be carried out simultaneously, so that the equipment heading efficiency and the tunnel construction progress are seriously influenced. So set up, some propulsion cylinder 3 can export propulsive force, and another part propulsion cylinder 3 can export the packing force to realize advancing and the section of jurisdiction is assembled and is gone on simultaneously, greatly improved the efficiency of construction, can simplify the hydraulic principle of control hydro-cylinder action simultaneously again.
Regarding the free zoning of the respective composite propulsion assemblies 1:
generally, in a common mode (non-push-splicing synchronization) tunneling, that is, a mode in which all the thrust cylinders 3 are simultaneously pushed and then segment splicing operation is performed after pushing is completed, free partitioning can be realized by controlling a pressure control instruction of the oil pump 2 corresponding to each thrust cylinder 3 in the mode, that is, the thrust cylinders 3 corresponding to the oil pumps 2 receiving the same pressure control instruction form a partition, so that the pressure control instruction of the oil pump 2 in each partition is the same value and is controlled by the pressure control knob in the partition in real time, and flow instruction signals of all the oil pumps 2 can be given the same value and controlled by the total speed control knob in real time.
If the subareas are as shown in fig. 2, when the propulsion cylinder 3 No. 18/19/20/01/02 is set as the subarea A, the pressure control commands of the oil pumps 2 corresponding to the propulsion cylinder 3 No. 18/19/20/01/02 are the same; 03/04/05/06/07 # propulsion cylinder 3 is set as B area, then the pressure input instruction of each oil pump 2 corresponding to 03/04/05/06/07 # propulsion cylinder 3 is the same value; 08/09/10/11/12 # thrust cylinder 3 is set as C area, the pressure input instruction of each oil pump 2 corresponding to 08/09/10/11/12 # thrust cylinder 3 is the same value; 13/4/15/16/17, the pressure input commands of the oil pumps 2 corresponding to 13/4/15/16/17 propulsion cylinders 3 are the same.
If the number of the propulsion cylinders 3 in the subareas needs to be changed during propulsion, as shown in fig. 3, 18/19/20/01/02 # propulsion cylinder 3 can be set as the area a, and the pressure control commands of the oil pumps 2 corresponding to 18/19/20/01/02 # propulsion cylinder 3 are the same; 03/04/05/06 # thrust cylinder 3 is set as B area, then the pressure control instruction of each oil pump 2 corresponding to 03/04/05/06 # thrust cylinder 3 is the same value; 07/08/09/10/11/12/13 # thrust cylinder 3 is set as C area, then the pressure control instruction of each oil pump 2 corresponding to 07/08/09/10/11/12/13 # thrust cylinder 3 is the same value; 14/15/16/17 propulsion cylinders 3 are set as the D zone, and the pressure control commands of the oil pumps 2 corresponding to 14/15/16/17 propulsion cylinders 3 are the same value.
In the push-split synchronization mode, each of the thrust cylinders 3 has no partition, and as shown in fig. 4, a part of the thrust cylinders 3 is extended in the push mode, and the other part of the thrust cylinders 3 is extended or retracted in the split mode. A certain propulsion cylinder 3 is specifically in a propulsion mode or an assembly mode, and can be switched by a corresponding controller 5 through a working mode control instruction. If the 05/06/07 # propulsion cylinder 3 is in the splicing mode, the rest propulsion cylinders 3(08-04 # propulsion cylinder 3) are in the propulsion mode. At this time, the controller 5 gives a fixed value the pressure control instruction and the flow control instruction of each oil pump 2 corresponding to the propulsion cylinder No. 05/06/07, so that the propulsion cylinder No. 05/06/07 3 can be rapidly extended and retracted in the assembly mode to complete the segment assembly operation. At the moment, the No. 08-04 propulsion oil cylinder 3 is in a propulsion mode, the controller 5 controls the thrust of the tunneling machine by controlling the pressure control instruction of each oil pump 2 corresponding to the No. 08-04 propulsion oil cylinder 3, and controls the propulsion speed of the tunneling machine by controlling the flow control instruction of each oil pump 2 corresponding to the No. 08-04 propulsion oil cylinder 3.
The embodiment also provides a heading machine, which mainly comprises a machine body and a composite propelling hydraulic system arranged on the machine body, wherein the specific content of the composite propelling hydraulic system is the same as the related content, and the details are not repeated herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A composite propulsion hydraulic system is characterized by comprising a plurality of composite propulsion assemblies (1) which are distributed along the circumferential direction of a machine body of a heading machine and respectively and independently run, wherein each composite propulsion assembly (1) comprises an oil pump (2), a propulsion oil cylinder (3) communicated with an oil outlet of the oil pump (2), a reversing valve (4) connected between the oil pump (2) and the propulsion oil cylinder (3), and a controller (5) in signal connection with the oil pump (2), the propulsion oil cylinder (3) is used for outputting axial propulsion when the heading machine is in a propulsion mode, the reversing valve (4) is used for controlling the telescopic state switching of a piston rod of the propulsion oil cylinder (3), and the controller (5) is used for adjusting working condition control signals sent to the corresponding oil pump (2) in real time according to the target tunneling attitude of the machine body.
2. The compound propulsion hydraulic system according to claim 1, characterized in that the controller (5) is configured to send a pressure control signal and/or a flow control signal to the corresponding oil pump (2) according to a target heading attitude of the fuselage.
3. The compound propulsion hydraulic system according to claim 2, characterized in that it further comprises a first pressure sensor (6) in communication with the oil outlet of the oil pump (2) for detecting its actual oil pressure, said first pressure sensor (6) being in signal connection with the controller (5) so that the controller (5) modifies the pressure control signal sent to the oil pump (2).
4. The compound propulsion hydraulic system according to claim 2, characterized in that it further comprises a flow sensor (7) in communication with the oil outlet of the oil pump (2) for detecting its actual oil flow, said flow sensor (7) being in signal connection with the controller (5) so that the controller (5) modifies the flow control signal sent to the oil pump (2).
5. The compound propulsion hydraulic system according to claim 1, characterized by further comprising a feedback signal cable (8) connected between the oil pump (2) and the controller (5) for feeding back to the controller (5) an operating condition control signal received by the oil pump (2).
6. A compound propulsion hydraulic system according to claim 1, characterized in that it further comprises a second pressure sensor (9) communicating with the rodless chamber of the propulsion cylinder (3) for detecting its oil pressure.
7. The compound propulsion hydraulic system according to claim 1, characterized by further comprising a stroke sensor (10) for detecting the telescopic stroke of the piston rod of the propulsion cylinder (3).
8. The compound propulsion hydraulic system as claimed in any one of claims 1 to 7, wherein the propulsion cylinders (3) are further configured to output a pressing force in a radial direction when the heading machine is in a segment assembling mode, and the controller (5) is further configured to adjust a working condition control signal sent to the corresponding oil pump (2) in real time according to a segment assembling process.
9. A heading machine comprising a body and a compound propulsion hydraulic system provided on the body, wherein the compound propulsion hydraulic system is in particular a compound propulsion hydraulic system as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210545111.5A CN114876898A (en) | 2022-05-19 | 2022-05-19 | Heading machine and composite propelling hydraulic system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210545111.5A CN114876898A (en) | 2022-05-19 | 2022-05-19 | Heading machine and composite propelling hydraulic system thereof |
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| CN114876898A true CN114876898A (en) | 2022-08-09 |
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| CN202210545111.5A Pending CN114876898A (en) | 2022-05-19 | 2022-05-19 | Heading machine and composite propelling hydraulic system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045355A1 (en) * | 2022-08-29 | 2024-03-07 | 中铁工程装备集团有限公司 | Method for controlling synchronous tunneling and assembling thrust cylinder, and system |
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2022
- 2022-05-19 CN CN202210545111.5A patent/CN114876898A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045355A1 (en) * | 2022-08-29 | 2024-03-07 | 中铁工程装备集团有限公司 | Method for controlling synchronous tunneling and assembling thrust cylinder, and system |
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