CN111636887A - Shield tunneling machine mud cake cleaning device and method based on rotary water jet cutter - Google Patents
Shield tunneling machine mud cake cleaning device and method based on rotary water jet cutter Download PDFInfo
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- CN111636887A CN111636887A CN202010316488.4A CN202010316488A CN111636887A CN 111636887 A CN111636887 A CN 111636887A CN 202010316488 A CN202010316488 A CN 202010316488A CN 111636887 A CN111636887 A CN 111636887A
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- pressure water
- water jet
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- hydraulic cylinder
- nozzle
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 181
- 238000004140 cleaning Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000005641 tunneling Effects 0.000 title claims description 30
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 abstract description 14
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 238000011010 flushing procedure Methods 0.000 description 9
- 239000004927 clay Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- 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
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
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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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- 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 provides a device and a method for cleaning mud cakes of a shield machine based on a rotary water jet cutter. The high-pressure water jet cutter formed by jetting the high-pressure water jet cutter nozzle is used for cutting and washing the mud cake on the cutter disc panel of the shield machine in a reciprocating manner, so that the washing process of the mud cake is quicker, more thorough and safer, and the cost of stopping the shield machine and washing the mud cake is saved.
Description
Technical Field
The invention relates to the technical field of shield machine construction, in particular to a shield machine mud cake cleaning device and method based on a rotary water jet cutter.
Background
In recent years, with rapid development of large-scale projects such as high-speed railways, urban subways, mining and the like, more and more tunnels are being planned and constructed. Compared with the traditional manual drilling outbreak, the shield machine has the advantages of small excavation amount, small influence on the environment, no surrounding soil settlement and the like on an excavated tunnel, and greatly improves the safety and the excavation speed, thereby being widely applied. In the tunneling process of the shield tunneling machine in a clay stratum, cohesive soil on the excavating surface is rolled by the cutter head panel, so that an attached mud cake is easily formed on the cutter head panel from the center of the cutter head panel to the periphery gradually, the normal work of the shield tunneling machine is influenced, the cutting efficiency of the cutter head panel is reduced, the torque of the cutter head panel and the propelling resistance of the shield tunneling machine are rapidly increased, the spiral conveyor cannot discharge soil, and the shield tunneling machine cannot be propelled forwards. The service life of the main bearing of the cutter head panel can be shortened due to the overhigh temperature in the clay bin, the damage of the main bearing is accelerated, and the serious consequences of sintering and locking of the main bearing can even occur.
The method for solving the mud cake on the cutter head panel at present is to increase the injection amount of a foaming agent, or manually enter the cutter head panel for cleaning, or add a corresponding flushing pipeline on the cutter head panel of the shield machine. The method for increasing the foam injection amount needs long-time soaking, so that the construction time is increased, and the environmental pollution is increased; the method for manually cleaning the face of the cutter head panel has great danger, and casualty accidents can be caused by the collapse of the face in front of the cutter head panel; most of the existing flushing pipelines are fixedly arranged on a cutter head panel, and the sprayed high-pressure jet flow can only flush small-range mud cakes in a water flow path and cannot more thoroughly flush the mud cakes on the cutter head panel of the shield tunneling machine. In order to solve the problems of long time consumption, high risk, incomplete cleaning and the like of the existing shield machine mud cake cleaning method, the patent provides a shield machine mud cake cleaning device and method based on a rotary water cutter, overcomes the defects of single flushing point position and small flushing range of the original flushing device, greatly improves the flushing efficiency of the shield machine mud cake, reduces the time for stopping the shield machine to clean the mud cake, and saves the cost; and potential safety hazards and environmental pollution caused by cleaning mud cakes by injecting bentonite are avoided.
Disclosure of Invention
The invention provides a device and a method for cleaning mud cakes of a shield machine based on a rotary water jet cutter, aiming at solving the problem that the normal work of the shield machine is influenced because the mud cakes are easy to form at the center of a cutter head panel in the tunneling process of a shield machine in a clay stratum. The high-pressure water jet cutter formed by jetting the high-pressure water jet cutter nozzle is used for cutting and washing the mud cake on the cutter disc panel of the shield machine in a reciprocating manner, so that the washing process of the mud cake is quicker, more thorough and safer, and the cost of stopping the shield machine and washing the mud cake is saved.
The invention provides a cleaning device for mud cakes of a shield tunneling machine based on a rotary water jet, which comprises a high-pressure water jet nozzle, a small rotary joint, a large rotary joint, a high-pressure water pipe, a high-pressure water pump, a hydraulic motor, a high-pressure water pipe mounting frame and a hydraulic cylinder, wherein a through hole is arranged on a cutter head panel of the shield tunneling machine, the hydraulic cylinder is arranged on the shield tunneling machine, the hydraulic motor, the high-pressure water pipe and the high-pressure water pump are arranged on the high-pressure water pipe mounting frame, one end of the high-pressure water jet nozzle is movably inserted into the through hole on the cutter head panel of the shield tunneling machine, the other end of the high-pressure water jet nozzle is connected with the water outlet end of the high-pressure water pipe through the small rotary joint, the water inlet end of the high-pressure water pipe is connected with the water outlet of the high-pressure water pump, the hydraulic motor is used for driving the high-pressure water jet nozzle to rotate, and the high-pressure water pipe mounting frame is connected with the piston rod end of the hydraulic cylinder through the large rotary joint.
In one embodiment, a driving gear is sleeved on a rotating shaft of the hydraulic motor, a driven gear is sleeved on the high-pressure water jet head, the driving gear and the driven gear are meshed with each other, wherein the axis of the rotating shaft of the hydraulic motor is overlapped with the axis of the driving gear, and the axis of the high-pressure water jet head is overlapped with the axis of the driven gear.
In one embodiment, the number of teeth of the driving gear is less than the number of teeth of the driven gear.
In one embodiment, the hydraulic system further comprises a hydraulic cylinder controller and a hydraulic cylinder flow monitor, wherein the hydraulic cylinder flow monitor is used for detecting the flow change of hydraulic oil flowing into the hydraulic cylinder, and the hydraulic cylinder controller controls the movement of the hydraulic cylinder according to a monitoring signal of the hydraulic cylinder flow monitor.
In one embodiment, the through holes in the cutterhead panel of the shield tunneling machine are circular through holes vertical to the cutterhead panel and distributed in the central area of the cutterhead panel.
In one embodiment, the high-pressure water jet nozzle is inserted into the through hole of the cutter head panel, the shape of one end of the high-pressure water jet nozzle is conical, and the side wall of the high-pressure water jet nozzle is provided with a jet orifice.
In one embodiment, a plurality of groups of the jet ports are arranged on the side wall of the high-pressure water jet head, each group of the jet ports comprises two jet ports, an included angle between the positions of the two jet ports in each group is 180 degrees, and the distances from the jet ports to the end part of the high-pressure water jet head are different.
The method for cleaning the mud cake of the shield machine based on the rotary water jet is also provided, and is characterized by comprising the following steps:
step 1: when the normal work of the shield machine is influenced by the fact that a mud cake is formed in the center of the disk panel of the shield machine cutter, stopping the rotation and the propulsion of the disk panel of the shield machine, controlling a hydraulic cylinder through a hydraulic cylinder controller to drive a high-pressure water jet nozzle to extend out of a through hole in the disk panel of the shield machine cutter and penetrate through the mud cake, and stopping when the top end of the high-pressure water jet nozzle extends out of the mud cake;
step 2: starting a high-pressure water pump, and ejecting high-pressure water from the high-pressure water pump from an ejection opening on the side surface of a high-pressure water jet nozzle through a high-pressure water pipe to form a high-pressure water jet parallel to a cutter head panel;
and step 3: the hydraulic motor drives the high-pressure water jet cutter nozzle to rotate around the central axis of the high-pressure water jet cutter nozzle, and the high-pressure water jet cutter ejected from the jet orifice on the side surface of the high-pressure water jet cutter nozzle rotationally washes mud cakes;
and 4, step 4: the hydraulic cylinder drives the high-pressure water pipe mounting frame and the high-pressure water jet nozzle to move back and forth in a small range in the mud cake along the central axis direction of the cutter head panel, so that the high-pressure water jet nozzle is driven to reciprocate along the central axis direction of the cutter head panel, and the mud cakes on different layers are flushed.
The circular through holes on the cutter head panel of the shield machine are perpendicular to the cutter head panel and distributed in the center area of the cutter head panel, so that the high-pressure water jet washing range formed by spraying of the high-pressure water jet spray head covers the center area of the whole cutter head panel except for the cutter, and the specific positions of the circular through holes are specifically arranged according to the difference of the cutter head panel of the shield machine.
And the high-pressure water jet nozzle is fixed on the high-pressure water pipe mounting frame positioned behind the cutter head panel and is connected with the high-pressure water pipe behind by using a rotary joint. The high-pressure water jet nozzle is made of metal with better strength and rigidity, and the outer layer of the high-pressure water jet nozzle is subjected to rust prevention treatment. Structurally, the side wall of the high-pressure water jet cutter nozzle is provided with a jet orifice, the foremost end of the high-pressure water jet cutter nozzle is closed, and the front end is designed into a conical shape which is easy to penetrate through a mud cake; the jet orifices on the side wall of the high-pressure water jet head are provided with a plurality of groups, and each group comprises two jet orifices; the two jet ports of each group are respectively positioned on the same circular section of the high-pressure water jet head with a 180-degree difference, the two jet ports are arranged at positions with different distances from the closed position of the front end of the high-pressure water jet head, and the distance between the two jet ports is properly adjusted according to the size of the cutter head panel.
Wherein in the step 1, the high-pressure water jet nozzle extends into the middle of the mud cake, and the high-pressure water jet nozzle is pushed to extend out of the cutter head panel by pushing the high-pressure water pipe mounting frame by using the hydraulic cylinder; stopping the pushing of the hydraulic cylinder when the top end of the high-pressure water jet head extends out of the mud cake, and the principle is as follows: when the top end of the high-pressure water jet cutter nozzle extends out of the mud cake, the resistance borne by the high-pressure water jet cutter nozzle is suddenly reduced, the pushing speed of the hydraulic cylinder is suddenly increased, the flow monitor of the hydraulic cylinder monitors the sudden increase of the flow flowing into the hydraulic cylinder at the moment, an electric signal is fed back to the hydraulic controller of the hydraulic cylinder, and the hydraulic controller controls the hydraulic cylinder to stop pushing;
in the step 3, the high-pressure water jet nozzles rotate around the central axes of the high-pressure water jet nozzles, because each high-pressure water jet nozzle is driven to rotate by the corresponding hydraulic motor;
in the step 4, the high-pressure water jet nozzle moves back and forth in the mud cake along the central axis of the cutter head panel within a small range, and the principle is as follows: the pneumatic cylinder promotes the high pressure water pipe support in a small circle along blade disc panel central axis direction reciprocating motion, and then drives the high pressure water sword that is formed by the injection of high pressure water sword shower nozzle along blade disc panel central axis direction reciprocating motion, makes the high pressure water sword can wash the mud cake of different aspect, improves the efficiency of washing of high pressure water sword to the mud cake.
Compared with the prior art, the shield machine mud cake cleaning device and method based on the rotary water jet cutter have the following advantages:
the invention avoids the problems of cost increase and environmental pollution increase caused by a mud cake cleaning method for increasing the foam injection amount; the casualty accident caused by the collapse of the face in front of the cutterhead panel when people enter the working face of the cutterhead panel to clean mud cakes is avoided. The invention solves the problem that the existing flushing pipeline is fixedly arranged perpendicular to the cutterhead panel and the high-pressure water jet sprayed by the flushing pipeline can only flush a small range of mud cakes in a water flow path by designing the rotatable water jet. The rotatable high-pressure water jet cutter has a wider mud cake cleaning range, and simultaneously, the high-pressure water jet cutter moves back and forth along the central axis direction of the cutter head panel to wash mud cakes on different layers, so that the mud cakes are washed more quickly and thoroughly, the time for stopping and finishing due to mud cake washing is reduced, and the stopping cost is saved; the thorough mud cake washing can also increase the interval time of the shield machine for washing the mud cake twice, namely, the time for normal tunneling is increased, and the tunneling efficiency of the shield machine is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the arrangement of through holes on the face plate of the cutter head according to the present invention;
FIG. 3 is a schematic sectional view of the assembly of the high pressure water jet head of the present invention;
FIG. 4 is a schematic diagram of the hydraulic motor driving the high pressure water jet nozzle to rotate according to the present invention;
in the figure: the device comprises a cutter head panel 1, a high-pressure water jet nozzle 2, a hydraulic motor 3, a small rotary joint 4, a large rotary joint 5, a hydraulic cylinder 6, a high-pressure water pump 7, a high-pressure water pipe 8, a high-pressure water pipe mounting frame 9, a jet orifice 10, a through hole 11, a driven gear 12 and a driving gear 13.
Detailed Description
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in FIGS. 1-4, for convenience of description, the "up", "down", "left", "right", "front" and "rear" orientation references in the present invention are based on the orientation shown in FIG. 1;
as shown in figure 1, the cleaning device for the mud cake of the shield machine based on the rotary water jet comprises a high-pressure water jet nozzle 2, a small rotary joint 4, a large rotary joint 5, a high-pressure water pipe 8, a high-pressure water pump 7, a hydraulic motor 3, a high-pressure water pipe mounting frame 9 and a hydraulic cylinder 6, wherein a through hole 11 is formed in a cutter head panel 1 of the shield machine, the left end of the cutter head panel 1 is a working surface, the right end of the cutter head panel 1 is a non-working surface, the hydraulic cylinder 6 is arranged on the shield machine, the hydraulic motor 3, the high-pressure water pipe 8 and the high-pressure water pump 7 are arranged on the high-pressure water pipe mounting frame 9, the left end of the high-pressure water jet nozzle 1 can be movably inserted into the through hole 11 in the cutter head panel 1 of the shield machine, the right end is connected with the water outlet end of the high-pressure water pipe 8 through the small rotary, the high-pressure water pipe mounting rack 9 is connected with the piston rod end of the hydraulic cylinder 6 through the large rotary joint 5.
The hydraulic control system further comprises a hydraulic cylinder controller and a hydraulic cylinder flow monitor, the hydraulic cylinder flow monitor is used for detecting the flow change of hydraulic oil flowing into the hydraulic cylinder 6, and the hydraulic cylinder controller controls the movement of the hydraulic cylinder 6 according to a monitoring signal of the hydraulic cylinder flow monitor.
Wherein, the cover is equipped with drive gear 13 in the pivot of hydraulic motor 3, and the cover is equipped with driven gear 12 on the high pressure water sword shower nozzle 2, and drive gear 13 and driven gear 12 intermeshing, and wherein the axis of the pivot of hydraulic motor 3 and the axis of drive gear 13 coincide and set up, and the axis of high pressure water sword shower nozzle 2 and the axis of driven gear 12 coincide and set up.
Wherein the number of teeth of the driving gear 13 is less than that of the driven gear 12.
The through holes 11 on the cutter head panel 1 of the shield machine are circular through holes vertical to the cutter head panel 1 and are distributed in the central area of the cutter head panel 1.
Wherein, the left end of the high-pressure water jet head 2 is conical in shape, and the side wall thereof is provided with a jet orifice 10.
Preferably, a plurality of groups of injection ports 10 are arranged on the side wall of the high-pressure water jet head 2, each group of injection ports 10 comprises two injection ports, an included angle between the positions of the two injection ports 10 in each group is 180 degrees, and the distance between the two injection ports 10 and the left end of the high-pressure water jet head 2 is different.
As shown in fig. 1, when the mud cake formed on the cutter head of the shield tunneling machine affects the normal operation of the shield tunneling machine, the operation of the cutter head is stopped, the hydraulic cylinder 6 is used for pushing the high-pressure water pipe mounting frame 9 and the high-pressure water jet head 2 to move leftwards together, the high-pressure water jet head 2 extends into the middle proper position of the mud cake, the high-pressure water jet is jetted out from the jet orifice 10 on the high-pressure water jet head 2, and then the hydraulic motor 3 arranged on the high-pressure water pipe mounting frame 9 drives the high-pressure water jet head 2 to rotate, so that the high-pressure water jet.
As shown in fig. 2, a plurality of through holes 11 perpendicular to the cutter head panel are additionally arranged on the cutter head panel 1, and the specific positions of the through holes are specifically arranged according to different cutter head panels 1 of the shield tunneling machine, so that the high-pressure water jet washing range covers all positions of the central area of the whole cutter head except for the cutters.
As shown in fig. 3, it can be seen that the high-pressure water jet nozzle 2 extends out of the cutter deck panel 1 for a certain distance when in operation. The high-pressure water jet cutter nozzle 2 is made of metal with better strength and rigidity, and the outer layer of the high-pressure water jet cutter nozzle is subjected to rust prevention treatment; the left end of the high-pressure water jet head 2 is closed without a jet orifice, and the closed part of the left end is designed into a conical shape which is beneficial to penetrating through mud cakes; a plurality of groups of injection ports 10 are arranged on the side wall of the left end of the high-pressure water jet head 2, and each group comprises two injection ports 10; the two jet orifices 10 of each group are positioned on the same circular section of the high-pressure water jet head 2 with a 180-degree difference; the two injection ports 10 are arranged at different positions away from the closed position of the left end of the high-pressure water jet nozzle 2, and the distance between the two injection ports 10 is specifically adjusted according to the size of the cutter head; compared with a single jet orifice, the plurality of jet orifices 10 increase the number of the high-pressure water knives, and improve the flushing efficiency of the high-pressure water knives.
As shown in fig. 1, all the high-pressure water pipes 8 are fixedly installed on a high-pressure water pipe installation frame 9 on the right side of a cutter panel 1, the distribution positions of the high-pressure water pipes correspond to through holes 11 on the cutter panel 1 of the shield tunneling machine, and a high-pressure water jet nozzle 2 is connected with the high-pressure water pipe 8 on the right side by a small rotary joint 4; the hydraulic cylinder 6 is used for pushing the high-pressure water pipe mounting frame 9 so as to push the high-pressure water jet nozzle 2 to extend out of the cutter head panel 1; when the top end of the high-pressure water jet cutter nozzle 2 extends out of the mud cake, the resistance borne by the high-pressure water jet cutter nozzle 2 is suddenly reduced, the pushing speed of the hydraulic cylinder 6 is suddenly increased, the hydraulic cylinder flow monitor monitors the sudden increase of the flow flowing into the hydraulic cylinder 6 at the moment, an electric signal is fed back to the hydraulic cylinder controller, and the hydraulic cylinder controller controls the hydraulic cylinder 6 to stop pushing, so that the high-pressure water jet cutter nozzle 2 can be stopped at a proper position in the middle of the mud cake; after washing for a period of time, the hydraulic cylinder controller controls the hydraulic cylinder 6 to reciprocate in a small range along the direction of the central shaft of the cutter head panel 1, so that the position of the high-pressure water jet can be continuously adjusted, the whole mud cake is washed back and forth, and the washing efficiency of the mud cake is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A cleaning device for mud cakes of a shield tunneling machine based on a rotary water jet is characterized by comprising a high-pressure water jet nozzle, a small rotary joint, a large rotary joint, a high-pressure water pipe, a high-pressure water pump, a hydraulic motor, a high-pressure water pipe mounting frame and a hydraulic cylinder, wherein a through hole is formed in a cutter head panel of the shield tunneling machine, the hydraulic cylinder is arranged on the shield tunneling machine, the hydraulic motor, the high-pressure water pipe and the high-pressure water pump are arranged on the high-pressure water pipe mounting frame, one end of the high-pressure water jet nozzle is movably inserted into the through hole on the cutter head panel of the shield tunneling machine, the other end of the high-pressure water jet nozzle is connected with the water outlet end of the high-pressure water pipe through the small rotary joint, the water inlet end of the high-pressure water pipe is connected with the water outlet of the high-pressure water pump, the hydraulic motor is used for driving the high-pressure water jet nozzle to rotate, and the high-pressure water pipe mounting frame is connected with the piston rod end of the hydraulic cylinder through the large rotary joint.
2. The shield tunneling machine mud cake cleaning device based on the rotary water jet cutter is characterized in that a driving gear is sleeved on a rotating shaft of the hydraulic motor, a driven gear is sleeved on a high-pressure water jet cutter nozzle, and the driving gear is meshed with the driven gear.
3. The device for cleaning mud cake of shield machine based on rotary water jet cutter as claimed in claim 2, wherein the number of teeth of said driving gear is less than that of said driven gear.
4. The shield tunneling machine mud cake cleaning device based on the rotary water jet cutter as claimed in any one of claims 1 to 3, further comprising a hydraulic cylinder controller and a hydraulic cylinder flow monitor, wherein the hydraulic cylinder flow monitor is used for detecting the flow change of hydraulic oil flowing into the hydraulic cylinder, and the hydraulic cylinder controller controls the movement of the hydraulic cylinder according to a monitoring signal of the hydraulic cylinder flow monitor.
5. The shield tunneling machine mud cake cleaning device based on the rotary water jet cutter according to any one of claims 1-3, characterized in that the through holes on the cutterhead panel of the shield tunneling machine are circular through holes perpendicular to the cutterhead panel and distributed in the central area of the cutterhead panel.
6. The device for cleaning mud cakes of the shield tunneling machine based on the rotary water jet cutter as claimed in any one of claims 1 to 3, wherein the high-pressure water jet cutter nozzle is inserted into the through hole of the cutter head panel, the end of the nozzle inserted into the through hole is conical in shape, and a jet orifice is arranged on the side wall of the nozzle.
7. The device for cleaning mud cakes of the shield tunneling machine based on the rotary water jet cutter as claimed in claim 6, wherein a plurality of groups of the jet orifices are arranged on the side wall of the high-pressure water jet cutter nozzle, each group of the jet orifices comprises two jet orifices, the included angle between the positions of the two jet orifices in each group is 180 degrees, and the distances from the end parts of the high-pressure water jet cutter nozzle are different.
8. A shield machine mud cake cleaning method based on a rotary water jet cutter is characterized by comprising the following steps:
step 1: when the normal work of the shield machine is influenced by the fact that a mud cake is formed in the center of the disk panel of the shield machine cutter, stopping the rotation and the propulsion of the disk panel of the shield machine, controlling a hydraulic cylinder through a hydraulic cylinder controller to drive a high-pressure water jet nozzle to extend out of a through hole in the disk panel of the shield machine cutter and penetrate through the mud cake, and stopping when the top end of the high-pressure water jet nozzle extends out of the mud cake;
step 2: starting a high-pressure water pump, and ejecting high-pressure water from the high-pressure water pump from an ejection opening on the side surface of a high-pressure water jet nozzle through a high-pressure water pipe to form a high-pressure water jet parallel to a cutter head panel;
and step 3: the hydraulic motor drives the high-pressure water jet nozzle to rotate around the central axis of the high-pressure water jet nozzle, so that the high-pressure water jet blade ejected from the jet orifice on the side surface of the high-pressure water jet nozzle rotationally washes mud cakes on the cutter head panel;
and 4, step 4: the hydraulic cylinder drives the high-pressure water pipe mounting frame and the high-pressure water jet nozzle to move back and forth in the mud cake in a small range along the central axis direction of the cutter head panel, so that the high-pressure water jet nozzle is driven to reciprocate along the central axis direction of the cutter head panel, and different layers of the whole mud cake are flushed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316488.4A CN111636887A (en) | 2020-04-21 | 2020-04-21 | Shield tunneling machine mud cake cleaning device and method based on rotary water jet cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316488.4A CN111636887A (en) | 2020-04-21 | 2020-04-21 | Shield tunneling machine mud cake cleaning device and method based on rotary water jet cutter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111632921A (en) * | 2020-04-21 | 2020-09-08 | 水利部新疆维吾尔自治区水利水电勘测设计研究院 | Earth pressure balance shield constructs quick-witted mud cake cleaning device with sealed gate |
| CN113266380A (en) * | 2021-05-24 | 2021-08-17 | 天津博为中天钻具有限公司 | Novel speed-up shield cutter head mechanism |
| CN117514217A (en) * | 2023-11-07 | 2024-02-06 | 深圳大学 | Shield tunneling machine tube bundle cutter head, shield tunneling machine and construction method of shield tunneling machine |
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| CN111632921A (en) * | 2020-04-21 | 2020-09-08 | 水利部新疆维吾尔自治区水利水电勘测设计研究院 | Earth pressure balance shield constructs quick-witted mud cake cleaning device with sealed gate |
| CN113266380A (en) * | 2021-05-24 | 2021-08-17 | 天津博为中天钻具有限公司 | Novel speed-up shield cutter head mechanism |
| CN117514217A (en) * | 2023-11-07 | 2024-02-06 | 深圳大学 | Shield tunneling machine tube bundle cutter head, shield tunneling machine and construction method of shield tunneling machine |
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Application publication date: 20200908 |