CN110847920A - Shield constructs machine and shield tail mechanism thereof - Google Patents
Shield constructs machine and shield tail mechanism thereof Download PDFInfo
- Publication number
- CN110847920A CN110847920A CN201911191693.6A CN201911191693A CN110847920A CN 110847920 A CN110847920 A CN 110847920A CN 201911191693 A CN201911191693 A CN 201911191693A CN 110847920 A CN110847920 A CN 110847920A
- Authority
- CN
- China
- Prior art keywords
- shield tail
- shield
- brush
- plate
- sliding rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 230000005641 tunneling Effects 0.000 claims abstract description 28
- 239000004519 grease Substances 0.000 claims description 52
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 description 7
- 239000011440 grout Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
Landscapes
- 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)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a shield tunneling machine and a shield tail mechanism thereof, wherein the shield tail mechanism comprises a shield tail, a sliding rail, a shield tail brush and a shelling device; the sliding rail is arranged on the inner side wall of the shield tail and extends along the axial direction of the shield tail; the shield tail brush is in sliding fit with the sliding rail and is used for abutting against a lining segment positioned in the shield tail; the unshelling device is arranged on the inner side wall of the shield tail and used for pushing the shield tail brush out of the shield tail at a second preset speed lower than the first preset speed in the opposite tunneling direction when the shield tail is pushed in the tunneling direction at the first preset speed. According to the technical scheme, the replacement of the shield tail brush is realized by utilizing the difference between the shield tail propelling speed and the extending speed of the shelling device, the lining pipe piece does not need to be removed in the replacement process, and the convenience of replacement of the shield tail brush is improved; meanwhile, the shield tail brushes are not limited by positions, and a user can replace all the shield tail brushes according to requirements.
Description
Technical Field
The invention relates to the technical field of shield tail sealing of shield tunneling machines, in particular to a shield tail mechanism. In addition, the invention also relates to a shield tunneling machine comprising the shield tail mechanism.
Background
The shield machine all adopts the shield tail brush of welding or bolted connection at the shield tail inner wall at present, shield tail grease to and the only thick liquid board of rigid coupling at shield tail terminal surface carries out shield tail sealed, wherein, the steel brush of shield tail brush closely laminates with lining cutting section of jurisdiction outer wall, when the shield machine is tunneled, the thrust cylinder withstands the section of jurisdiction ring that the lining cutting was accomplished and advances the shield machine forward, the shield tail brush is relative motion with lining cutting section of jurisdiction outer wall this moment, wait to advance after certain distance L, assemble new section of jurisdiction ring again, later the shield advances to repeat above-mentioned step. Therefore, the shield tail brush is pressed between the inner wall of the shield tail and the outer wall of the lining segment for a long time to move relatively, and the probability of abrasion of the shield tail brush is high, so that constructors need to replace the shield tail brush according to actual working conditions and combination experience in order to ensure safe and reliable shield construction.
The existing shield tail brush replacement process needs to remove 1-2 ring segments and can only replace the front 2 shield tail brushes at most, so that the process is inconvenient to operate, consumes time and labor, influences the construction efficiency and increases the construction cost.
In conclusion, how to conveniently replace the shield tail brush and enable all the shield tail brushes to be dismounted according to requirements is a problem to be urgently solved by technical personnel in the field at present.
Disclosure of Invention
In view of the above, the present invention provides a shield tail mechanism, which can realize the complete replacement operation of a shield tail brush without removing a lining segment, solve the problem of inconvenient operation of the existing shield tail brush replacement process, and simultaneously solve the problem that the traditional shield tail brush replacement needs to detach a lining segment and can only replace at most a few front shield tail brushes, thereby effectively reducing the labor intensity of workers, improving the shield construction efficiency and saving the construction cost. Another object of the present invention is to provide a shield tunneling machine including the shield tail mechanism.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a shield tail mechanism, includes the shield tail, still includes:
the sliding rail is arranged on the inner side wall of the shield tail and extends along the axial direction of the shield tail;
the shield tail brush is in sliding fit with the sliding rail and is used for abutting against the lining segment positioned in the shield tail;
and the shelling device is arranged on the inner side wall of the shield tail and used for pushing the shield tail brush out of the shield tail at a second preset speed lower than the first preset speed along a tunneling reverse direction when the shield tail is pushed at the first preset speed along the tunneling direction.
Preferably, the shield tail brush comprises a bottom plate in sliding fit with the sliding rail, a steel wire brush used for abutting against the lining segment and a lapping plate provided with a positioning hole, a steel wire brush bending section at the front end of the steel wire brush is tightly pressed at the front end of the bottom plate through a connecting pin shaft, and the lapping plate is arranged at the rear end of the bottom plate; when two adjacent shield tail brushes are connected, the lap joint plate cover of the former shield tail brush is arranged on the steel wire brush bending section of the latter shield tail brush, and the connecting pin shaft of the latter shield tail brush extends into the positioning hole of the former shield tail brush.
Preferably, the bottom plate is equipped with the edge the spout that slide rail length direction extends, the middle part of bottom plate is equipped with the edge the grease groove that bottom plate thickness runs through, the slide rail passes the spout, and be located in the grease groove, the slide rail is equipped with the edge the slide rail grease hole that slide rail thickness runs through.
Preferably, one side of the lap plate facing the lining segment is provided with a wear-resistant layer.
Preferably, the cross section of the sliding groove is T-shaped.
Preferably, the shield tail barrel of the shield tail is provided with a slurry stopping plate, the slurry stopping plate comprises a pressing plate and a steel plate bundle with the end part bent, and the bending section of the steel plate bundle is arranged between the pressing plate and the shield tail barrel.
Preferably, the shelling device comprises a hinged seat arranged on the inner side wall of the shield tail, a shelling oil cylinder with the end part hinged with the hinged seat, and a deviation correcting mechanism arranged on the inner side wall of the shield tail and used for adjusting the position of the shelling oil cylinder.
Preferably, the end part of the shelling oil cylinder, which is far away from the hinged seat, is provided with a mechanical gripper for gripping the tail brush of the shield.
A shield machine comprises any one shield tail mechanism.
The shield tail mechanism provided by the invention comprises a shield tail, a slide rail, a shield tail brush and a shelling device; the sliding rail is arranged on the inner side wall of the shield tail and extends along the axial direction of the shield tail; the shield tail brush is in sliding fit with the sliding rail and is used for abutting against a lining segment positioned in the shield tail; the unshelling device is arranged on the inner side wall of the shield tail, and when the shield tail is propelled along the tunneling direction at a first preset speed, the unshelling device is used for pushing the shield tail brush out of the shield tail along the tunneling reverse direction at a second preset speed, and the second preset speed is smaller than the first preset speed.
In the propelling process of the shield tunneling machine, a lining segment positioned in the shield tail is fixed, the shield tail moves forwards at a first preset speed relative to the lining segment, and the unshelling device moves forwards at the first preset speed under the driving of the shield tail. Meanwhile, the unshelling device pushes the shield tail brush backwards at a second preset speed, namely the shield tail brush moves forwards relative to the lining segment at a third preset speed, wherein the third preset speed is equal to the difference value between the first preset speed and the second preset speed, and the sealing effect between the shield tail and the lining segment is guaranteed.
Because the shield tail moves faster than the shield tail brush in the tunneling direction, and the shield tail brush and the shield tail are not fixed in a welding mode, a bolt mode and the like, but are in sliding fit with the shield tail through the sliding rail, under the action of the unshelling device, the shield tail brush is pushed out of a gap between the shield tail and the lining segment and falls off from the outside of the shield tail, and the lining segment is removed.
The application provides a shield tail mechanism utilizes the shelling device to release the shield tail brush, need not to demolish the lining cutting section of jurisdiction to improve the convenience of demolising the shield tail brush, reduced workman's intensity of labour simultaneously. Meanwhile, the position of the dismantled tail shield brush is not limited, so that all tail shield brushes can be dismantled.
The application also provides a shield machine, which has the beneficial effects.
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 structural diagram of a shield tunneling machine;
FIG. 2 is a partial schematic view of the tail mechanism;
FIG. 3 is a schematic view of FIG. 2 taken along line B;
FIG. 4 is a schematic view of a partial structure of a shield tail;
FIG. 5 is a schematic view of the hulling apparatus;
FIG. 6A is a schematic view of a mechanical gripper in an unclamped state;
FIG. 6B is a schematic view of a mechanical gripper in a clamped state;
FIG. 6C is a schematic view of an alternative mechanical gripper in an unclamped state;
FIG. 6D is a schematic view of another mechanical gripper in a clamped state;
FIG. 7A is a side view of a shield tail brush;
FIG. 7B is a front view of the shield tail brush;
FIG. 7C is a top view of the shield tail brush;
FIG. 8A is a side view of the bottom plate of the shield tail brush;
FIG. 8B is a front view of the bottom plate of the shield tail brush;
FIG. 8C is a top view of the bottom plate of the shield tail brush;
FIG. 9 is a three-dimensional schematic view of a shield tail brush;
FIG. 10 is a schematic view of the structure of the row of shield tail brushes matching with the slide rail;
FIG. 11A is a top view of the slide rail;
FIG. 11B is a cross-sectional view taken along line A-A of FIG. 11A;
FIG. 11C is a side view of the slide rail;
FIG. 12A is a cross-sectional view of a stop plate;
FIG. 12B is a plan view of a stop plate;
FIG. 13 is a schematic view showing a circumferential installation position of a dash panel;
FIG. 14 is a partial data diagram of a replacement tail brush;
fig. 15 is a schematic view of a shield tail brush replacing step.
The reference numerals in FIGS. 1-15 are:
1-shield tail, 101-shield tail cylinder, 102-synchronous grouting pipeline, 103-grease pipeline, 104-grouting port, 105-grease injecting port, 106-grease outlet hole and 107-grease outlet hole; 2-shelling device, 201-shelling oil cylinder, 202-hinged seat, 203-mechanical clamp, 2031-left clamp, 2032-right clamp, 2033-pushing plate and 204-deviation correcting mechanism; 3-shield tail brush, 301-bottom plate, 302-steel wire brush, 303-lapping plate, 304-connecting pin shaft, 305-sliding groove, 306-grease groove, 307-clamping hole and 308-positioning hole; 4-slide rail, 401-slide rail grease hole, 402-slide rail back, 403-slide rail front, 404-grease guide groove; 5-a grout stopping plate, 501-a steel plate bundle, 502-a pressing plate, 503-a pressing bolt and 504-a gasket; 6-pushing the oil cylinder; 7-lining segment; shield tail grease.
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.
The application provides a shield tail mechanism, which comprises a shield tail 1, a slide rail 4, a shield tail brush 3 and a shelling device 2; the slide rail 4 is arranged on the inner side wall of the shield tail 1 and extends along the axial direction of the shield tail 1; the shield tail brush 3 is in sliding fit with the sliding rail 4 and is used for abutting against a lining segment 7 positioned in the shield tail 1; the unshelling device 2 is arranged on the inner side wall of the shield tail 1, and the unshelling device 2 is used for pushing the shield tail brush 3 out of the shield tail 1 at a second preset speed in the opposite tunneling direction when the shield tail 1 is pushed at a first preset speed in the tunneling direction. Here, the second preset speed is less than the first preset speed; the tunneling direction and the reverse tunneling direction are opposite directions.
Specifically, the shield body of the shield machine is of an inverted cone type barrel structure and is divided into a front shield, a middle shield and a shield tail 1, and a driving device, a man-machine cabin, a propulsion mechanism, a slurry circulating system and the like for driving a shield cutter head to rotate are arranged in the front shield/middle shield.
Referring to fig. 4, a plurality of grease pipelines 103, a plurality of grease injection ports 105 and grease outlet holes 106 are arranged inside the side wall of the shield tail 1, and a loop corresponding to each grease outlet hole 106 can be independently opened and closed. According to the actual working condition requirement, a plurality of synchronous grouting pipelines 102, grouting ports 104 and grout outlet holes 107 are designed in the side wall of the shield tail 1.
The propelling process of the shield tail 1 is mainly controlled by a propelling oil cylinder 6, a cylinder barrel of the propelling oil cylinder 6 is fixed on the shield tail 1, a piston of the propelling oil cylinder 6 extends out to push a lining segment 7 inside the shield tail 1, and the shield machine integrally moves towards the tunneling direction under the action of the reacting force of the propelling oil cylinder 6. The propelling speed of the propelling oil cylinder 6 is the first preset speed.
Referring to fig. 1 to 3, the shield tail brush 3 is integrally arranged on an inner wall ring of a shield tail 1 of the shield tunneling machine, the shield tail brush 3 is pressed between an outer wall of a lining segment 7 and an inner wall of the shield tail 1, and the shield tail 1 of the shield tunneling machine is sealed by continuously injecting grease into a grease cavity formed among the shield tail brush 3, the inner wall of the shield tail 1 and the outer wall of the lining segment 7.
The slide rail 4 extends to the end of the shield tail 1 along the axial direction of the shield tail 1, referring to fig. 11, the back 402 of the slide rail 4 is fixed on the inner wall of the shield tail 1 by welding or other methods, and the front 403 of the slide rail 4 is in sliding fit with the shield tail brush 3.
The hulling device 2 has a fixed end connected to the inner wall of the shield tail 1 and a movable end in contact with the shield tail brush 3. When the hulling device 2 is operated, the movable end thereof pushes the tail brush 3 to move along the slide rail 4. The hulling device 2 may specifically adopt a linear driving mechanism such as an oil cylinder and a lead screw.
It should be noted that, in order to ensure the sealing effect of the shield tail brush 3, the shield tail 1 is generally provided with a plurality of sliding rails 4, and each sliding rail 4 is provided with a plurality of shield tail brushes 3. More specifically, the slide rail 4 is fixed on the inner wall of the tail shield along the circumferential direction of the shield tail 1 according to a certain rule; the shield tail brush 3 is arranged on the slide rail 4 in a plurality of ways at certain intervals, and the shield tail brush 3 covered by the lining segment 7 is tightly attached to the outer wall of the lining segment 7. The shield tail brush 3 closest to the hulling device 2 is referred to as the first shield tail brush 3, and the first shield tail brush 3 is connected to the hulling device 2. In addition, when the hulling device 2 and the shield tunneling machine work, the matched hydraulic system, electrical system and auxiliary facilities thereof work in a matching way.
Referring to fig. 14 to 15, the shield tunneling machine uses the speed difference of the extending of the propulsion cylinder 6 and the shelling device 2 to realize the reliable replacement of the shield tail brush 3, and theoretically, the speed relationship between the propulsion cylinder 6 and the shelling cylinder 201 satisfies the following formula:
in the formula:
v is the extension speed of the hulling device 2, i.e. the second predetermined speed;
s is the length of the single shield tail brush 3;
n is the number of the shield tail brushes 3 to be replaced, and one shield tail brush 3 is specifically a circular shield tail brush 3 in the length direction of the slide rail 4;
l is the extending/retracting distance of the propulsion oil cylinder, namely the distance from the end surface of the supporting shoe of the propulsion oil cylinder 6 to the end surface of the foremost annular lining segment 7;
f is the margin clearance;
v is the extending speed of the propulsion oil cylinder 6, namely a first preset speed;
h is the width of the monolithic lining segment 7, H is L-f, and H > sn;
therefore, the first preset speed V is larger than the second preset speed V by controlling the parameters of the formula, so that the requirement for replacing the tail brush of the shield is met.
In practical application, the replacement steps of the shield tail brush 3 are as follows:
the first step is as follows: the propelling oil cylinder 6 retracts L to a set position, the hulling device 2 retracts for a certain distance, and the retracting distance of the hulling device 2 is slightly larger than sn.
The second step is that: after the hulling device 2 retracts to the set position, n shield tail brushes 3 are arranged between the existing shield tail brush 3 and the hulling device 2. And then the shield tunneling machine lining segment assembling machine starts assembling operation, the lining segment 7 is assembled at a corresponding position, n newly installed shield tail brushes 3 are pressed, at the moment, the thrust cylinder 6 extends out by a distance f to abut against the end face of the assembled lining segment 7, the shield tail grease injection system operates, and shield tail grease 8 is injected into the front n grease cavities which are newly installed.
The third step: and assembling the lining segments 7 one by one according to the first step and the second step until the whole ring of the lining segments 7 are assembled. After the assembly of one ring of lining segments 7 is finished, all grease cavities are continuously filled with shield tail grease 8, at the moment, all the propulsion oil cylinders 6 propel the shield machine forward at a speed V, so that the fixed ends of the shield tail 1 and the shelling device 2 synchronously move forward at the speed V; at the same time, all the dehulling devices 2 push the tail brushes 3 backwards at a speed v. Therefore, the shield tail brush 3 moves relative to the lining segment 7 in the driving direction of the shield tunneling machine, and the relative speed of the two is V-V.
The fourth step: when the propulsion oil cylinder 6 propels forwards for the distance H/n, the last shield tail brush 3 is separated from the shield tail 1, and at the moment, the shield tail grease system automatically closes a pipeline for filling grease into the original first grease cavity and stops filling grease into the original first grease cavity; when the propulsion oil cylinder 6 propels for a distance of 2H/n, the penultimate shield tail brush 3 begins to be separated from the shield tail 1, at the moment, the shield tail grease system automatically closes the grease injection pipeline into the original second grease cavity, the grease injection into the original second grease cavity is stopped, and the grease injection pipelines of the other grease cavities are still continuously injected with grease.
The fifth step: and repeating the first step to the fourth step until all the tail brushes 3 are replaced.
The shield tail mechanism is simple in structure, convenient to operate and reliable in operation, the shield tail brush 3 is replaced by utilizing the speed difference of the extension of the propulsion oil cylinder 6 and the extension of the shelling device 2, the lining duct piece 7 does not need to be removed in the replacement process, the convenience of replacement of the shield tail brush 3 is improved, the shield construction efficiency is improved, and the construction cost is reduced; meanwhile, all the tail brushes 3 can be replaced according to requirements without being limited to the front shield tail brushes 3 in the prior art, and the sealing effect of the tail brushes 3 is guaranteed.
Further, referring to fig. 7 to 10, in an embodiment provided by the present application, the shield tail brush includes a bottom plate slidably engaged with the slide rail, a wire brush for abutting against the lining segment, and a lap plate having a positioning hole, a bent section of the wire brush at a front end of the wire brush is pressed against a front end of the bottom plate by a connecting pin, and the lap plate is disposed at a rear end of the bottom plate; when two adjacent shield tail brushes are connected, the lap plate cover of the front shield tail brush is arranged on the steel wire brush bending section of the rear shield tail brush, and the connecting pin shaft of the rear shield tail brush extends into the positioning hole of the front shield tail brush.
Specifically, the front end and the rear end refer to two opposite ends of the base plate 301, and the front and the rear are based on the heading direction of the shield tail 1, that is, the front end of the base plate 301 is closer to the hulling device 2, and the rear end is farther from the hulling device 2.
The lapping plate 303 is L-shaped, and taking the view angle shown in fig. 9 as an example, the lapping plate 303 has a horizontal plate and a vertical plate, the horizontal plate is provided with a positioning hole 308, and the vertical plate is welded on the bottom plate 301. Optionally, one side of the lapping plate 303 facing the lining segment 7 is provided with a wear layer to protect the front end of the shield tail brush 3.
During actual assembly, each shield tail brush 3 is connected with the connecting pin shaft 304 through the lapping plate 303, when the two shield tail brushes 3 are connected, the horizontal plate of the previous lapping plate 303 is attached to the bent section of the next steel wire brush, and the connecting pin shaft 304 is in splicing fit with the positioning hole 308. When the shield tail brush 3 on the same slide rail 4 is pushed by the hulling device 2, the last shield tail brush 3 is pushed out of the shield tail 1 at first, the shield tail brush 3 loses the support of the shield tail 1 and is flicked by the acting force of the lining segment 7, the connecting pin 304 is separated from the positioning hole 308, and the last shield tail brush 3 falls off from the shield tail 1.
Optionally, in an embodiment provided by the application, the bottom plate is provided with a sliding groove extending along the length direction of the sliding rail, the middle part of the bottom plate is provided with a grease groove penetrating along the thickness of the bottom plate, the sliding rail penetrates through the sliding groove and is located in the grease groove, and the sliding rail is provided with a sliding rail grease hole penetrating along the thickness of the sliding rail.
Specifically, the width of the grease groove 306 is greater than the width of the slide rail 4. The cross section of the sliding chute 305 can be T-shaped or other shapes, the shape of the sliding rail 4 is matched with the shape of the sliding chute 305, and the sliding rail 4 penetrates into the sliding chute 305. The bottom plate 301 is provided with a grease groove 306 for facilitating entry of shield tail grease 8 into the grease cavity. The slide rail 4 is provided with a grease guide groove 404, the grease guide groove 404 extends from the side wall of the slide rail grease hole 401 to the outer side wall of the slide rail 4, so that grease can flow in the outer area of the slide rail grease hole 401 and the slide rail 4, and redundant grease can be scraped off when the shield tail brush 3 slides.
Optionally, referring to fig. 12 to 13, in an embodiment provided by the present application, a shield tail cylinder 101 of a shield tail 1 is provided with a grout stop plate 5, the grout stop plate 5 includes a press plate 502 and a steel plate bundle 501 with a bent end, and a bent section of the steel plate bundle 501 is disposed between the press plate 502 and the shield tail cylinder 101. Specifically, the steel plate bundle 501 is composed of a plurality of thin steel plates, and the steel plate bundle 501 and the end face of the shield tail 1 are fixed by a pressing bolt 503 and a gasket 504 after being compacted by a pressing plate 502. During actual assembly, the grout stopping plates 5 are sequentially arranged along the circumferential direction of the shield tail 1, the adjacent grout stopping plates 55 are overlapped 1/2, and the grout stopping plates 5 are arranged on the bottom of the shield tail 1 except for about 1/6 in the circumferential direction.
Further, referring to fig. 5 to 6, on the basis of any one of the above embodiments, the shelling device 2 includes an articulated seat 202 disposed on an inner side wall of the shield tail 1, a shelling cylinder 201 with an end portion articulated with the articulated seat 202, and a deviation correcting mechanism 204 disposed on the inner side wall of the shield tail 1 for adjusting a position of the shelling cylinder 201.
Specifically, the hinge base 202 may adopt a hinge shaft structure, and may also adopt a ball hinge structure. The fixed end of the shelling oil cylinder 201 is fixedly connected with the inner wall of the shield tail 1 through the hinge base 202, the middle part of the shelling oil cylinder is connected with the inner wall of the shield tail 1 through the deviation correcting mechanism 204, and the deviation correcting mechanism 204 can guide and correct the shelling oil cylinder 201 according to actual working conditions, so that the shelling oil cylinder 201 is accurately aligned to the shield tail brush 3 to be pushed. The specific structure of the deviation correcting mechanism 204 can be selected in many ways, for example, the deviation correcting mechanism 204 is specifically a guide ring sleeved on the periphery of the shelling oil cylinder 201, the guide ring is circumferentially provided with a plurality of adjusting bolts abutting against the shelling oil cylinder 201, and the fixing position of the shelling oil cylinder 201 can be adjusted by screwing the adjusting bolts. Of course, automatic adjusting equipment can be arranged according to requirements.
Optionally, in order to optimize the connection effect of the shelling cylinder 201 and the shield tail brush 3, in an embodiment provided by the present application, the end of the shelling cylinder 201 away from the hinge base 202 is provided with a mechanical holder 203 for holding the shield tail brush 3.
Specifically, the mechanical gripper 203 has a left clamp 2031 and a right clamp 2032, which are respectively controlled to clamp or loosen by a left steering engine and a right steering engine, and a pushing plate 2033 on the mechanical gripper 203 is in contact with the end face of the first shield tail brush 3, so as to realize thrust transfer. In practical use, a clamping hole 307 matched with the mechanical holder 203 can be arranged on the shield tail brush 3, so that the left clamp 2031 and the right clamp 2032 of the mechanical holder 203 can clamp the shield tail brush 3 conveniently, and the clamping hole 307 can be specifically arranged at the front end of the bottom plate 301.
In operation, if the hulling apparatus 2 is provided with the mechanical gripper 203, the mechanical gripper 203 needs to release the first shield tail brush 3 before the hulling cylinder 201 retracts in the first step of the shield tail brush 3 replacement step. Correspondingly, in the second step, after n shield tail brushes 3 are installed between the existing shield tail brush 3 and the shelling device 2, the shelling oil cylinder 201 needs to be controlled to extend out to the position of the clamping hole 307 of the first shield tail brush 3, the left clamp 2031 and the right clamp 2032 of the mechanical clamp 203 clamp the first shield tail brush 3, and after the mechanical clamp 203 is determined to be clamped in place, the lining segment 7 is assembled.
In addition to the shield tail mechanism, the present invention also provides a shield tunneling machine including any one of the shield tail mechanisms described above, which can rapidly replace all of the shield tail brushes 3 by using the shield tail mechanism. The structure of other parts of the shield machine refers to the prior art, and is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The shield machine and the shield tail mechanism thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a shield tail mechanism, includes shield tail (1), its characterized in that still includes:
the sliding rail (4) is arranged on the inner side wall of the shield tail (1) and extends along the axial direction of the shield tail (1);
the shield tail brush (3) is in sliding fit with the sliding rail (4) and is used for abutting against a lining segment (7) positioned in the shield tail (1);
the unshelling device (2) is arranged on the inner side wall of the shield tail (1), and the unshelling device (2) is used for pushing the shield tail brush (3) out of the shield tail (1) in the tunneling reverse direction at a second preset speed lower than the first preset speed when the shield tail (1) is pushed in the tunneling direction at the first preset speed.
2. The shield tail mechanism according to claim 1, wherein the shield tail brush (3) comprises a bottom plate (301) which is in sliding fit with the sliding rail (4), a steel wire brush (302) which is used for abutting against the lining segment (7), and a lapping plate (303) which is provided with a positioning hole (308), wherein a steel wire brush bending section at the front end of the steel wire brush (302) is pressed at the front end of the bottom plate (301) through a connecting pin shaft (304), and the lapping plate (303) is arranged at the rear end of the bottom plate (301); when two adjacent shield tail brushes (3) are connected, the lapping plate (303) of the former shield tail brush (3) is covered on the steel wire brush bending section of the latter shield tail brush (3), and the connecting pin shaft (304) of the latter shield tail brush (3) extends into the positioning hole (308) of the former shield tail brush (3).
3. The shield tail mechanism according to claim 2, characterized in that the bottom plate (301) is provided with a sliding groove (305) extending along the length direction of the sliding rail (4), the middle part of the bottom plate (301) is provided with a grease groove (306) penetrating along the thickness of the bottom plate (301), the sliding rail (4) penetrates through the sliding groove (305) and is positioned in the grease groove (306), and the sliding rail (4) is provided with a sliding rail grease hole (401) penetrating along the thickness of the sliding rail (4).
4. The shield tail mechanism according to claim 3, characterized in that the side of the overlapping plate (303) facing the lining segment (7) is provided with a wear resistant layer.
5. The shield tail mechanism according to claim 4, characterized in that the cross section of the chute (305) is T-shaped.
6. The shield tail mechanism according to claim 1, characterized in that a shield tail cylinder (101) of the shield tail (1) is provided with a slurry stopping plate (5), the slurry stopping plate (5) comprises a pressing plate (502) and a steel plate bundle (501) with bent ends, and the bent section of the steel plate bundle (501) is arranged between the pressing plate (502) and the shield tail cylinder (101).
7. The shield tail mechanism according to any one of claims 1 to 6, characterized in that the shelling device (2) comprises a hinged seat (202) arranged on the inner side wall of the shield tail (1), a shelling cylinder (201) with the end portion hinged with the hinged seat (202), and a deviation correcting mechanism (204) arranged on the inner side wall of the shield tail (1) and used for adjusting the position of the shelling cylinder (201).
8. The shield tail mechanism according to claim 7, characterized in that the end of the shelling cylinder (201) remote from the hinged seat (202) is provided with a mechanical holder (203) for holding the shield tail brush (3).
9. A shield tunneling machine, comprising the shield tail mechanism of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191693.6A CN110847920B (en) | 2019-11-28 | 2019-11-28 | Shield constructs machine and shield tail mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911191693.6A CN110847920B (en) | 2019-11-28 | 2019-11-28 | Shield constructs machine and shield tail mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110847920A true CN110847920A (en) | 2020-02-28 |
| CN110847920B CN110847920B (en) | 2022-06-14 |
Family
ID=69606327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911191693.6A Active CN110847920B (en) | 2019-11-28 | 2019-11-28 | Shield constructs machine and shield tail mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110847920B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107511A (en) * | 2021-05-13 | 2021-07-13 | 内蒙古民族大学 | Shield constructs machine based on thing networking signalling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114084A (en) * | 2015-08-28 | 2015-12-02 | 重庆市腾瀚工贸有限公司 | Tail shield of shield tunneling machine |
| CN105275474A (en) * | 2015-10-20 | 2016-01-27 | 徐工集团凯宫重工南京有限公司 | Shield tail brush and quick-disassembly shield tail sealing device |
| CN206753594U (en) * | 2017-06-02 | 2017-12-15 | 中铁工程装备集团有限公司 | A kind of scalable replacing ventral brush structure of shield machine |
| CN206753587U (en) * | 2017-03-24 | 2017-12-15 | 中铁工程装备集团有限公司 | A kind of fast detachable shield tail brush |
| CN108571322A (en) * | 2018-05-16 | 2018-09-25 | 华东交通大学 | A kind of shield machine ventral brush device and its replacing options |
-
2019
- 2019-11-28 CN CN201911191693.6A patent/CN110847920B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114084A (en) * | 2015-08-28 | 2015-12-02 | 重庆市腾瀚工贸有限公司 | Tail shield of shield tunneling machine |
| CN105275474A (en) * | 2015-10-20 | 2016-01-27 | 徐工集团凯宫重工南京有限公司 | Shield tail brush and quick-disassembly shield tail sealing device |
| CN206753587U (en) * | 2017-03-24 | 2017-12-15 | 中铁工程装备集团有限公司 | A kind of fast detachable shield tail brush |
| CN206753594U (en) * | 2017-06-02 | 2017-12-15 | 中铁工程装备集团有限公司 | A kind of scalable replacing ventral brush structure of shield machine |
| CN108571322A (en) * | 2018-05-16 | 2018-09-25 | 华东交通大学 | A kind of shield machine ventral brush device and its replacing options |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107511A (en) * | 2021-05-13 | 2021-07-13 | 内蒙古民族大学 | Shield constructs machine based on thing networking signalling |
| CN113107511B (en) * | 2021-05-13 | 2023-08-11 | 内蒙古民族大学 | Shield tunneling machine based on Internet of things signal transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110847920B (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10539016B2 (en) | Tunnel boring machine | |
| CN109184595B (en) | Rearmounted automatic additional connection drilling equipment of drilling rod | |
| CN110500028B (en) | Self-propelled drilling and core-taking mechanism | |
| CN110847920B (en) | Shield constructs machine and shield tail mechanism thereof | |
| CN104632238A (en) | Shield tunneling machine used for building of underground building or structure and capable of achieving continuous advancing | |
| CN111706340B (en) | Shield tail brush convenient to replace and method for replacing shield tail brush under long-distance non-reinforced working condition | |
| CN110513117B (en) | Mode switching device of double-mode shield screw machine and using method | |
| CN107762522B (en) | Pipe ring butt joint auxiliary device and method for replacing shield tail brush | |
| CN113565521A (en) | Connecting channel tunneling equipment and connecting channel construction method | |
| CN2236544Y (en) | Inserting shield structure | |
| CN211966259U (en) | Device capable of realizing simultaneous blanking of multiple stiffening rings | |
| CN218657247U (en) | Continuous casting slab cutting device | |
| CN108825257B (en) | Heading machine and super-digging cutter thereof | |
| CN215949518U (en) | Hard rock tunnel boring machine and assembling machine for boring machine | |
| CN114033400B (en) | Shield tail mechanism capable of replacing all shield tail brushes in hole and method for replacing shield tail brushes | |
| CN212508320U (en) | Shield tail brush device capable of being replaced in shield tunneling process | |
| CN115012969A (en) | Shield constructs quick-witted propulsion equipment that slides | |
| CN204827458U (en) | External impulse type shield structure machine device that misses stop | |
| CN114876473A (en) | Subway communication channel tunneling equipment based on horizontal full rotation and construction method | |
| CN110802620B (en) | End effector of heading machine tool changing robot suitable for cutter roller box | |
| CN203594207U (en) | Stepping hydropower grooving machine | |
| CN209761335U (en) | Horizontal directional drilling machine | |
| CN113482654B (en) | Connecting passage tunneling machine and connecting passage construction method | |
| CN218844327U (en) | Assemble operation tongs and assemble equipment thereof | |
| CN202578586U (en) | Racker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |