CN112762033A - Multi-mode direction adjusting system and control method for rectangular tunnel boring machine - Google Patents
Multi-mode direction adjusting system and control method for rectangular tunnel boring machine Download PDFInfo
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- CN112762033A CN112762033A CN202110158282.8A CN202110158282A CN112762033A CN 112762033 A CN112762033 A CN 112762033A CN 202110158282 A CN202110158282 A CN 202110158282A CN 112762033 A CN112762033 A CN 112762033A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- 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
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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Abstract
The invention provides a multi-mode direction-adjusting system and a control method of a rectangular tunnel boring machine, which are used for solving the problems that the existing direction-adjusting system of a pipe jacking machine is single in control mode, difficult to get rid of difficulties when a shield body is stuck and incapable of self-adapting in shield tail posture. The oil tank is connected with the oil cylinder group through the mode control module; the mode control module is provided with at least two groups corresponding to the oil cylinder group, the oil tank is connected with the mode control module through an oil inlet pipeline, the mode control module is respectively connected with a rod cavity pipeline and a rodless cavity pipeline, the rod cavity pipeline is connected with a rod cavity of the oil cylinders in the oil cylinder group, and the rodless cavity pipeline is connected with a rodless cavity of the oil cylinders in the oil cylinder group; the mode control module is connected with the oil return pipeline. According to the invention, through different control modes of the electromagnetic directional valve and the electromagnetic ball valve, the heading machine has multiple direction-adjusting modes, so that the heading machine can better adapt to snake-shaped forward, the shield tail posture can adapt to curve heading better, and the shield body can be easily trapped when being clamped.
Description
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to a multi-mode direction adjusting system and a control method of a rectangular tunnel boring machine.
Background
With the continuous progress of human civilization, the problem of environmental pollution caused by urban ground traffic is more concerned, how to more efficiently develop and utilize urban underground space becomes an industry concerned problem, and in the construction of urban tunnels, the shield construction method is rapidly popularized and developed due to the characteristics of not influencing the urban ground traffic, ensuring the normal life of urban residents, obtaining good engineering quality, high construction speed and the like. The phenomenon that the pipe jacking machine performs curve tunneling and the axis deviates from a certain angle can occur in the tunneling process, the direction of the pipe jacking machine needs to be adjusted and corrected, but the direction adjusting system of the super-large-diameter pipe jacking machine has some key technologies to be researched and broken through.
Therefore, a novel hydraulic system which is simple and convenient to control, stable and reliable is designed for the direction adjusting system of the push bench, and the hydraulic system has a very promising prospect and is also very urgent.
The Chinese patent application with the application number of 201410241399.2 provides a dual-mode switching TBM propelling hydraulic system, two propelling modules with the same structure are connected with a two-position four-way electromagnetic directional valve, so that the grouping control of left and right modules in dual modes is realized, and the error of deviating from a preset track caused by independent control is eliminated; the internal force of the TBM at the tunnel bend and during direction adjustment is greatly reduced, and the problems of damage to components and hydraulic elements of the TBM and deviation of the tunnel from a preset curve caused by unbalanced thrust of the oil cylinder are solved; however, in the curve tunneling process, the shield body is easy to clamp, and once the shield body is clamped, the shield body is not easy to get rid of difficulties.
Disclosure of Invention
The invention provides a multi-mode direction adjusting system and a control method of a rectangular tunnel boring machine, aiming at the technical problems that the control mode of the existing direction adjusting system of the pipe jacking machine is single, the shield body is difficult to get rid of difficulties when stuck, and the shield tail posture cannot be self-adapted.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: a multi-mode direction-adjusting system of a rectangular tunnel boring machine comprises an oil tank and an oil cylinder group, wherein the oil tank is connected with the oil cylinder group through a mode control module; the mode control module is provided with at least four groups corresponding to the oil cylinder groups, the oil cylinder groups are uniformly distributed around the circumference of the shield body, the oil tank is connected with the mode control module through an oil inlet pipeline, the mode control module is respectively connected with a rod cavity pipeline and a rodless cavity pipeline, the rod cavity pipeline is connected with a rod cavity of the oil cylinders in the oil cylinder groups, and the rodless cavity pipeline is connected with a rodless cavity of the oil cylinders in the oil cylinder groups; the mode control module is connected with the oil return pipeline.
Preferably, the mode control module comprises an electromagnetic directional valve, a hydraulic lock and an electromagnetic ball valve, the oil inlet pipeline and the oil return pipeline are both connected with the electromagnetic directional valve, the electromagnetic directional valve is connected with the hydraulic lock, the hydraulic lock is respectively connected with a rod cavity pipeline and a rodless cavity pipeline, and the rod cavity pipeline and the rodless cavity pipeline are both connected with the electromagnetic ball valve.
Preferably, overflow valves are arranged on the rod cavity pipeline and the rodless cavity pipeline, and are connected with the oil return pipeline to limit the highest pressure of the oil cylinder.
And a pressure sensor is arranged on the pipeline of the rod cavity and used for detecting the pressure of the oil cylinder in real time.
Preferably, the oil tank is connected with the filter, and the filter is connected with the butterfly valve, and the butterfly valve is connected with the hydraulic pump, and the hydraulic pump is connected with the ball valve, and the ball valve is connected with high pressure filter, and high pressure filter is connected with the check valve, and the check valve is connected with mode control module respectively through advancing oil pipe way, realizes advancing oil pipe way pump sending high pressure hydraulic oil, realizes the flexible control of hydro-cylinder.
Preferably, the hydraulic pump is connected to an electric motor for driving the hydraulic pump.
Preferably, the number of the oil cylinder groups is four, and the four oil cylinder groups are respectively arranged at the upper part, the lower part, the left side and the right side of the shield body; the oil cylinder groups are provided with at least two oil cylinders, the oil cylinders in each oil cylinder group are connected in parallel, and two ends of each oil cylinder are respectively connected to the front shield and the tail shield; the oil cylinder group comprises a first oil cylinder group, a second oil cylinder group, a third oil cylinder group and a fourth oil cylinder group, and the first oil cylinder group, the second oil cylinder group, the third oil cylinder group and the fourth oil cylinder group are respectively connected with one mode control module.
A control method of a multi-mode direction-adjusting system of a rectangular tunnel boring machine comprises the following steps: controlling the electromagnetic reversing valve and the electromagnetic ball valve in the oil cylinder group not to be powered, and then enabling the oil cylinder in the oil cylinder group to be in a locking state; controlling an electromagnetic reversing valve in the oil cylinder group not to be electrified and an electromagnetic ball valve to be electrified, wherein the oil cylinders in the oil cylinder group are in a floating state; the left position of the electromagnetic directional valve is electrified, the electromagnetic ball valve is not electrified, hydraulic oil in an oil inlet pipeline enters a rod cavity pipeline through the electromagnetic directional valve, hydraulic oil in a rodless cavity pipeline enters an oil return pipeline through the electromagnetic directional valve, and an oil cylinder in an oil cylinder group retracts; the right position of the electromagnetic directional valve is electrified, the electromagnetic ball valve is not electrified, hydraulic oil in the oil inlet pipeline enters the rodless cavity pipeline through the electromagnetic directional valve, hydraulic oil in the rod cavity pipeline enters the oil return pipeline through the electromagnetic directional valve, and the oil cylinder in the oil cylinder group extends out.
Preferably, a single set of control modes, a normal control mode and a combined boost mode are included, an
A single set of control modes: the oil cylinder in one of the oil cylinder groups is in a locking state, the two oil cylinder groups are in a floating state, and the oil cylinder in the other oil cylinder group extends out or retracts to realize fine adjustment of the attitude of the heading machine;
and (3) a normal control mode: the two oil cylinder groups are in a locking state, the oil cylinder of one oil cylinder group extends out, and the oil cylinder of one oil cylinder group retracts, so that the tunneling of the tunneling machine with large turning radius is realized;
combined reinforcement mode: one of the oil cylinder groups is locked, and the oil cylinders of the other three oil cylinder groups extend out, so that the large-range deviation correction of the heading machine is realized.
Preferably, in the single set of control modes: controlling the electromagnetic reversing valve and the electromagnetic ball valve in the first oil cylinder group not to be powered, and enabling the oil cylinders in the first oil cylinder group to be in a locking state; controlling the electromagnetic directional valve in the second oil cylinder group and the electromagnetic directional valve in the third oil cylinder group not to be electrified, and controlling the electromagnetic ball valve in the second oil cylinder group and the electromagnetic ball valve in the third oil cylinder group to be electrified, so that the oil cylinders of the second oil cylinder group and the third oil cylinder group are in a floating state; controlling the left position of the electromagnetic reversing valve in the fourth oil cylinder group to be electrified or the right position of the electromagnetic reversing valve in the fourth oil cylinder group to be electrified and the electromagnetic ball valve to be not electrified, and retracting or extending the oil cylinder in the fourth oil cylinder group so as to realize the control of the fourth oil cylinder group;
and (3) a normal control mode: controlling the electromagnetic reversing valve in the first oil cylinder group to be electrified at the left position, and controlling the electromagnetic ball valve in the first oil cylinder group not to be electrified; controlling both an electromagnetic reversing valve and an electromagnetic ball valve in the second oil cylinder group to be powered; controlling the right position of an electromagnetic directional valve in the third oil cylinder group to be electrified and the electromagnetic ball valve to be not electrified; controlling an electromagnetic reversing valve and an electromagnetic ball valve in the fourth oil cylinder group not to be powered; the oil cylinders in the third oil cylinder group extend out, the oil cylinders in the first oil cylinder group retract, and the oil cylinders in the second oil cylinder group and the fourth oil cylinder group are locked, so that the lower part of the tail shield is adjusted;
combined reinforcement mode: controlling both an electromagnetic reversing valve and an electromagnetic ball valve in the first oil cylinder group to be powered; controlling the right position of an electromagnetic reversing valve in the second oil cylinder group to be electrified and the electromagnetic ball valve to be not electrified; controlling the right position of an electromagnetic directional valve in the third oil cylinder group to be electrified and the electromagnetic ball valve to be not electrified; and controlling the right position of the electromagnetic reversing valve in the fourth oil cylinder group to be electrified and the electromagnetic ball valve to be not electrified, so that the oil cylinders in the second oil cylinder group, the third oil cylinder group and the fourth oil cylinder group extend out, and the oil cylinder in the first oil cylinder group is locked, thereby realizing the adjustment of the two sides and the lower part of the tail shield.
Compared with the prior art, the invention has the beneficial effects that: the three-position four-way electromagnetic reversing valve, the hydraulic lock, the safety valve and the electromagnetic ball valve are adopted to realize a single-group control mode, a conventional control mode and a combined reinforcement mode, the tunneling machine can better adapt to snake-shaped forward in a normal mode, the attitude self-adaptation of the shield tail can better adapt to curve tunneling in the single-group control mode, and the tunneling machine is easier to get rid of difficulties when the shield body is clamped in the combined reinforcement mode. According to the invention, through different combinations of the three-position four-way reversing valve and the electromagnetic ball valve, the heading machine can better adapt to snake-shaped forward, particularly the posture self-adaptation of the shield tail can better adapt to curve heading, and the shield body is easier to get rid of difficulties when being clamped.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the arrangement of the cylinder group of the present invention.
FIG. 3 is a view showing the installation position of the oil cylinder in the shield body.
In the figure, 1 is an oil tank, 2 is a filter, 3 is a butterfly valve, 4 is a motor, 5 is a hydraulic pump, 6 is a ball valve, 7 is a high-pressure filter, 8 is a one-way valve, 9 is an electromagnetic directional valve, 13 is a hydraulic lock, 17 is an overflow valve, 21 is an electromagnetic ball valve, 25 is a pressure sensor, 32 is an oil cylinder, 33 is a front shield, and 34 is a tail shield.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Preferably, the mode control module comprises an electromagnetic directional valve 9, a hydraulic lock 13 and an electromagnetic ball valve 21, an oil inlet pipeline and an oil return pipeline are both connected with the electromagnetic directional valve 9, and the electromagnetic directional valve 9 mainly functions to control the extension and retraction of the oil cylinder, namely, hydraulic oil is pumped into a rod cavity pipeline or a rodless cavity pipeline. The electromagnetic directional valve 9 is connected with a hydraulic lock 13, and the hydraulic lock is used for keeping the pressure of a rod cavity and a rodless cavity and preventing the pressure of the oil cylinder 32 from being released. When the reversing valve 9 is in the neutral position, the hydraulic lock 13 maintains the pressure of the oil cylinder, and if the oil cylinder has no pressure, the oil cylinder can automatically retract or extend, so that an accident is caused. The hydraulic lock 13 is respectively connected with a pipeline with a rod cavity and a pipeline without the rod cavity, the pipeline with the rod cavity and the pipeline without the rod cavity are both connected with the electromagnetic ball valve 21, the oil cylinder 32 is in a floating state when the electromagnetic ball valve 21 is powered on, and the oil cylinder 32 is in a normal state when the electromagnetic ball valve 21 is powered off. The hydraulic oil in the hydraulic lock 13 and the electromagnetic directional valve 9 returns through an oil return line. The electromagnetic directional valve 9 is a three-position four-way electromagnetic directional valve, if the left position (cross position) of the electromagnetic valve takes oil, the right position (parallel position) returns oil, and vice versa. The left position of the electromagnetic directional valve 9 is electrified, hydraulic oil in an oil inlet pipeline enters a rod cavity pipeline through the electromagnetic directional valve 9, hydraulic oil in a rodless cavity pipeline enters an oil return pipeline through the electromagnetic directional valve 9, the hydraulic oil is pumped to the rod cavity pipeline, and the oil cylinder retracts; the right position of the electromagnetic directional valve 9 is electrified, hydraulic oil in the oil inlet pipeline enters the rodless cavity pipeline through the electromagnetic directional valve 9, hydraulic oil in the rod cavity pipeline enters the oil return pipeline through the electromagnetic directional valve 9, hydraulic oil is pumped to the rodless cavity pipeline, and the oil cylinder extends out.
The hydraulic oil return device is characterized in that overflow valves 17 are arranged on the rod cavity pipeline and the rodless cavity pipeline, the overflow valves 17 are connected with an oil return pipeline, hydraulic oil in the rod cavity pipeline and the rodless cavity pipeline is conveyed to the oil return pipeline through the overflow valves 17, and the oil return pipeline is connected with an oil return tank through a one-way valve to prevent the hydraulic oil from flowing reversely. The overflow valve 17 is used for limiting the highest pressure of a rod cavity and a rodless cavity of the oil cylinder 32, preventing the oil cylinder 32 from being damaged due to overhigh pressure, limiting the pressure bearing capacity of the oil cylinder and easily causing accidents once the highest pressure is exceeded.
Preferably, the rod cavity pipeline or the rodless cavity pipeline is provided with a pressure sensor 25, but according to working conditions, the pressure sensor 25 is arranged on the rod cavity pipeline, and the pressure sensor 25 is used for measuring the pressure on the rod cavity pipeline. The pressure of the rod cavity of the oil cylinder can be observed on the interface of the upper computer through the pressure sensor.
Preferably, the oil tank 1 is connected to a filter 2, and the filter 2 performs preliminary filtering on oil entering the hydraulic pump 5 from the oil tank 1. The filter 2 is connected to a butterfly valve 3, which butterfly valve 3 controls the flow of low-pressure oil from the tank 1 to a hydraulic pump 5. The butterfly valve 3 is connected with a hydraulic pump 5, and the hydraulic pump 5 is used for pumping high-pressure hydraulic oil into an oil inlet loop. The hydraulic pump 5 is connected with a ball valve 6, the ball valve 6 is used for cutting off or adjusting a high-pressure side pipeline, the ball valve 6 is connected with a high-pressure filter 7, and the high-pressure filter 7 is used for further filtering high-pressure hydraulic oil. The high-pressure filter 7 is connected with a check valve 8, and the check valve 8 prevents the backflow of the high-pressure hydraulic oil. The one-way valves 8 are respectively connected with the mode control module through oil inlet pipelines. The hydraulic pump 5 is connected with the motor 4, and the motor 4 drives the hydraulic pump 5 to start.
The number of the oil cylinder groups is four, the four oil cylinder groups are respectively arranged at the upper part, the lower part, the left side and the right side of the shield body, and as shown in fig. 2, the pipe jacking machine is respectively controlled from the circumferential direction; the oil cylinder groups are provided with a plurality of oil cylinders 32, the number of the oil cylinders 32 in each oil cylinder group can be increased or decreased according to geological conditions, and the oil cylinders 32 in each oil cylinder group are connected in parallel. The telescopic quantity of each group can be adjusted according to requirements, the oil cylinder is provided with a stroke sensor, and an operator can adjust the stroke of the oil cylinder according to actual conditions. Two ends of the oil cylinder 32 are respectively connected to the front shield 33 and the tail shield 34, as shown in fig. 3, so that the front shield is pushed by the extension and contraction of the oil cylinder 32.
Embodiment 2, as shown in fig. 2, a control method of a multi-mode direction-adjusting system of a rectangular tunnel boring machine:
the oil cylinder groups comprise a first oil cylinder group A, a second oil cylinder group B, a third oil cylinder group C and a fourth oil cylinder group D, and the first oil cylinder group A, the second oil cylinder group B, the third oil cylinder group C and the fourth oil cylinder group D are respectively connected with a mode control module, namely one mode control module controls one oil cylinder group.
A single set of control modes: the oil cylinders in one oil cylinder group are in a locked state, the two oil cylinder groups are in a floating state, the oil cylinders in the other oil cylinder group extend out or retract, the four oil cylinder groups can be combined randomly, and the direction of the four oil cylinder groups in the upper direction, the lower direction, the left direction and the right direction can be adjusted, so that the fine adjustment of the attitude of the heading machine is realized.
And (3) a normal control mode: the two oil cylinder groups are in a locking state, the oil cylinder of one oil cylinder group extends out, the oil cylinder of one oil cylinder group retracts, and the four oil cylinder groups can be combined randomly, so that the tunneling of the tunneling machine with a large turning radius is realized; the larger range of the turning radius is a turning radius exceeding 500 meters.
Combined reinforcement mode: one of the oil cylinder groups is locked, the oil cylinders of the other three oil cylinder groups extend out, and the four oil cylinder groups can be combined at will, so that the large-range deviation correction of the heading machine is realized. The large-range deviation rectifying range is as follows: the upper and lower deviation or the left and right deviation exceeds 100 mm.
Specifically, in one combination, a single set of control modes: the PLC controls the electromagnetic directional valve 9 and the electromagnetic ball valve 21 in the first oil cylinder group A to be not powered, so that the oil cylinders in the first oil cylinder group A are in a locking state; the PLC controls the electromagnetic directional valve in the second oil cylinder group B and the electromagnetic directional valve 9 in the third oil cylinder group C not to be electrified, the electromagnetic ball valve 21 of the second oil cylinder group B and the electromagnetic ball valve 21 of the third oil cylinder group C are electrified, and then the oil cylinders of the second oil cylinder group B and the third oil cylinder group C are in a floating state; the electromagnetic directional valve 9 in the fourth oil cylinder group D is electrified in the left position or the right position, the electromagnetic ball valve 21 is not electrified, and the oil cylinder in the fourth oil cylinder group D retracts or extends out, so that the control of one oil cylinder group is realized, the posture self-adaption of the shield tail can be realized, and the adaptive curve tunneling can be better realized.
And (3) a normal control mode: the PLC controls the left position of the electromagnetic reversing valve 9 in the first oil cylinder group A to be electrified, and the electromagnetic ball valve 21 in the first oil cylinder group A is not electrified; controlling the electromagnetic directional valve 9 and the electromagnetic ball valve 21 in the second cylinder group B not to be powered; controlling the right position of the electromagnetic directional valve 9 in the third cylinder group C to be electrified and the electromagnetic ball valve 21 not to be electrified; controlling the electromagnetic directional valve 9 and the electromagnetic ball valve 21 in the fourth cylinder group D not to be powered; the cylinders in the third cylinder group C extend out, the cylinders in the first cylinder group A retract, and the cylinders in the second cylinder group B and the fourth cylinder group D are locked, so that the lower part of the tail shield 34 is adjusted, and the heading machine can better adapt to snake-shaped advance.
Combined reinforcement mode: when the pipe-jacking tunneling machine needs large-range deviation correction, the electromagnetic directional valve 9 and the electromagnetic ball valve 21 in the first oil cylinder group A are not powered; the right position of the electromagnetic directional valve 9 in the second oil cylinder group B is electrified, and the electromagnetic ball valve 21 is not electrified; the right position of the electromagnetic directional valve 9 in the third cylinder group C is electrified, and the electromagnetic ball valve 21 is not electrified; the right position of the electromagnetic directional valve 9 in the fourth oil cylinder group D is electrified, the electromagnetic ball valve 21 is not electrified, oil cylinders in the second oil cylinder group B, the third oil cylinder group C and the fourth oil cylinder group D all stretch out, and the oil cylinders in the first oil cylinder group A are locked, so that the two sides and the lower part of the tail shield 34 are adjusted, and the tunneling machine is easy to get out of trouble when the shield body is clamped.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A multi-mode direction-adjusting system of a rectangular tunnel boring machine comprises an oil tank (1) and an oil cylinder group, and is characterized in that the oil tank (1) is connected with the oil cylinder group through a mode control module; the mode control module is provided with at least four groups corresponding to the oil cylinder groups, the oil cylinder groups are uniformly distributed around the circumference of the shield body, the oil tank (1) is connected with the mode control module through an oil inlet pipeline, the mode control module is respectively connected with a rod cavity pipeline and a rodless cavity pipeline, the rod cavity pipeline is connected with a rod cavity of the oil cylinders in the oil cylinder groups, and the rodless cavity pipeline is connected with a rodless cavity of the oil cylinders in the oil cylinder groups; the mode control module is connected with the oil return pipeline.
2. The rectangular tunnel boring machine multi-mode direction adjusting system according to claim 1, wherein the mode control module comprises an electromagnetic directional valve (9), a hydraulic lock (13) and an electromagnetic ball valve (21), an oil inlet pipeline and an oil return pipeline are both connected with the electromagnetic directional valve (9), the electromagnetic directional valve (9) is connected with the hydraulic lock (13), the hydraulic lock (13) is respectively connected with a rod cavity pipeline and a rodless cavity pipeline, and the rod cavity pipeline and the rodless cavity pipeline are both connected with the electromagnetic ball valve (21).
3. The rectangular tunnel boring machine multi-mode direction adjusting system according to claim 2, characterized in that an overflow valve (17) is arranged on each of the rod cavity pipeline and the rodless cavity pipeline, and the overflow valve (17) is connected with the oil return pipeline.
4. The rectangular tunnel boring machine multi-mode direction-adjusting system according to claim 1 or 3, characterized in that the rod cavity pipeline is provided with a pressure sensor (25).
5. The rectangular tunnel boring machine multi-mode direction adjusting system according to claim 1, characterized in that the oil tank (1) is connected with a filter (2), the filter (2) is connected with a butterfly valve (3), the butterfly valve (3) is connected with a hydraulic pump (5), the hydraulic pump (5) is connected with a ball valve (6), the ball valve (6) is connected with a high pressure filter (7), the high pressure filter (7) is connected with a one-way valve (8), and the one-way valve (8) is respectively connected with the mode control module through an oil inlet pipeline.
6. The rectangular tunnel boring machine multi-mode direction-adjusting system according to claim 5, characterized in that the hydraulic pump (5) is connected with the motor (4).
7. The rectangular tunnel boring machine multi-mode direction adjusting system according to claim 5, wherein the number of the oil cylinder groups is four, and the four oil cylinder groups are respectively arranged at the upper part, the lower part, the left side and the right side of the shield body; the oil cylinder groups are internally provided with at least two oil cylinders (32), the oil cylinders (32) in each oil cylinder group are connected in parallel, and two ends of each oil cylinder (32) are respectively connected to the front shield (33) and the tail shield (34); the oil cylinder group comprises a first oil cylinder group, a second oil cylinder group, a third oil cylinder group and a fourth oil cylinder group, and the first oil cylinder group, the second oil cylinder group, the third oil cylinder group and the fourth oil cylinder group are respectively connected with one mode control module.
8. The multi-mode direction-adjusting system of the rectangular tunnel boring machine according to any one of claims 1 to 3 and 5 to 7, characterized in that the control method is as follows: controlling the electromagnetic directional valve (9) and the electromagnetic ball valve (21) in the oil cylinder group not to be powered, and then enabling the oil cylinder in the oil cylinder group to be in a locking state; controlling an electromagnetic directional valve (9) in the oil cylinder group not to be electrified and an electromagnetic ball valve (21) to be electrified, wherein the oil cylinder in the oil cylinder group is in a floating state; the left position of the electromagnetic directional valve (9) is electrified, the electromagnetic ball valve (21) is not electrified, hydraulic oil in an oil inlet pipeline enters a rod cavity pipeline through the electromagnetic directional valve (9), hydraulic oil in a rodless cavity pipeline enters an oil return pipeline through the electromagnetic directional valve (9), and an oil cylinder in the oil cylinder group retracts; the right position of the electromagnetic directional valve (9) is electrified, the electromagnetic ball valve (21) is not electrified, hydraulic oil in an oil inlet pipeline enters a rodless cavity pipeline through the electromagnetic directional valve (9), hydraulic oil in a rod cavity pipeline enters an oil return pipeline through the electromagnetic directional valve (9), and an oil cylinder in the oil cylinder group extends out.
9. The method of claim 8 including a single set of control mode, a normal control mode and a combined enhanced mode, and
a single set of control modes: the oil cylinder in one of the oil cylinder groups is in a locking state, the two oil cylinder groups are in a floating state, and the oil cylinder in the other oil cylinder group extends out or retracts to realize fine adjustment of the attitude of the heading machine;
and (3) a normal control mode: the two oil cylinder groups are in a locking state, the oil cylinder of one oil cylinder group extends out, and the oil cylinder of one oil cylinder group retracts, so that the tunneling of the tunneling machine with large turning radius is realized;
combined reinforcement mode: one of the oil cylinder groups is locked, and the oil cylinders of the other three oil cylinder groups extend out, so that the large-range deviation correction of the heading machine is realized.
10. The method of controlling a multiple mode direction changing system of a rectangular tunnel boring machine according to claim 9, wherein in the single set of control modes: controlling the electromagnetic directional valve (9) and the electromagnetic ball valve (21) in the first oil cylinder group not to be powered, and enabling the oil cylinders in the first oil cylinder group to be in a locking state; controlling an electromagnetic directional valve (9) in the second oil cylinder group and an electromagnetic directional valve (9) in the third oil cylinder group not to be electrified, and controlling an electromagnetic ball valve (21) in the second oil cylinder group and an electromagnetic ball valve (21) in the third oil cylinder group to be electrified, so that the oil cylinders of the second oil cylinder group and the third oil cylinder group are in a floating state; controlling the left position of an electromagnetic directional valve (9) in the fourth cylinder group to be electrified or the right position to be electrified and the electromagnetic ball valve (21) to be not electrified, and retracting or extending the oil cylinder in the fourth cylinder group so as to realize the control of the fourth cylinder group;
in the normal control mode: controlling a solenoid directional valve (9) in the first oil cylinder group to be electrified at the left position, and controlling a solenoid ball valve (21) in the first oil cylinder group not to be electrified; controlling an electromagnetic directional valve (9) and an electromagnetic ball valve (21) in the second oil cylinder group to be not powered; controlling the right position of an electromagnetic directional valve (9) in the third cylinder group to be electrified and controlling an electromagnetic ball valve (21) not to be electrified; controlling an electromagnetic directional valve (9) and an electromagnetic ball valve (21) in the fourth cylinder group not to be powered; the oil cylinders in the third oil cylinder group extend out, the oil cylinders in the first oil cylinder group retract, and the oil cylinders in the second oil cylinder group and the fourth oil cylinder group are locked, so that the lower part of the tail shield (34) is adjusted;
in the combined enhancement mode: controlling an electromagnetic directional valve (9) and an electromagnetic ball valve (21) in the first oil cylinder group to be not powered; controlling the right position of an electromagnetic directional valve in the second oil cylinder group to be electrified and the electromagnetic ball valve (21) not to be electrified; controlling the right position of an electromagnetic directional valve (9) in the third cylinder group to be electrified and controlling an electromagnetic ball valve (21) not to be electrified; and controlling the right position of an electromagnetic directional valve (9) in the fourth oil cylinder group to be electrified and the electromagnetic ball valve (21) not to be electrified, so that the oil cylinders in the second oil cylinder group, the third oil cylinder group and the fourth oil cylinder group extend out, and the oil cylinder in the first oil cylinder group is locked, thereby realizing the adjustment of the two sides and the lower part of the tail shield (34).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110158282.8A CN112762033B (en) | 2021-02-05 | 2021-02-05 | Multi-mode direction adjusting system and control method for rectangular tunnel boring machine |
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| CN202110158282.8A CN112762033B (en) | 2021-02-05 | 2021-02-05 | Multi-mode direction adjusting system and control method for rectangular tunnel boring machine |
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| CN112762033B CN112762033B (en) | 2022-02-08 |
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| CN202110158282.8A Active CN112762033B (en) | 2021-02-05 | 2021-02-05 | Multi-mode direction adjusting system and control method for rectangular tunnel boring machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6193592U (en) * | 1985-09-10 | 1986-06-17 | ||
| CN104033154A (en) * | 2014-06-03 | 2014-09-10 | 浙江大学 | TBM dual-mode switching pushing hydraulic system |
| CN206206301U (en) * | 2016-08-24 | 2017-05-31 | 中铁隧道股份有限公司 | A kind of shield/TBM quickly misses the stop the hydraulic control circuit of stepping platform |
| CN208634509U (en) * | 2018-08-08 | 2019-03-22 | 安徽唐兴机械装备有限公司 | A kind of hydraulic system corrected for rectangular pipe jacking machine posture and quickly take off pipe |
| CN111456746A (en) * | 2020-04-30 | 2020-07-28 | 中铁工程装备集团有限公司 | Super-large-diameter shield multi-mode propulsion system and control method |
-
2021
- 2021-02-05 CN CN202110158282.8A patent/CN112762033B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6193592U (en) * | 1985-09-10 | 1986-06-17 | ||
| CN104033154A (en) * | 2014-06-03 | 2014-09-10 | 浙江大学 | TBM dual-mode switching pushing hydraulic system |
| CN206206301U (en) * | 2016-08-24 | 2017-05-31 | 中铁隧道股份有限公司 | A kind of shield/TBM quickly misses the stop the hydraulic control circuit of stepping platform |
| CN208634509U (en) * | 2018-08-08 | 2019-03-22 | 安徽唐兴机械装备有限公司 | A kind of hydraulic system corrected for rectangular pipe jacking machine posture and quickly take off pipe |
| CN111456746A (en) * | 2020-04-30 | 2020-07-28 | 中铁工程装备集团有限公司 | Super-large-diameter shield multi-mode propulsion system and control method |
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| CN112762033B (en) | 2022-02-08 |
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