CN114060046A - Major diameter slurry shield constructs owner actuating mechanism - Google Patents
Major diameter slurry shield constructs owner actuating mechanism Download PDFInfo
- Publication number
- CN114060046A CN114060046A CN202111298117.9A CN202111298117A CN114060046A CN 114060046 A CN114060046 A CN 114060046A CN 202111298117 A CN202111298117 A CN 202111298117A CN 114060046 A CN114060046 A CN 114060046A
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- main driving
- main
- ring
- shield
- supporting framework
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 239000002002 slurry Substances 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000005641 tunneling Effects 0.000 description 25
- 239000002689 soil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 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
-
- 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
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to underground shield construction equipment, in particular to a main driving mechanism of a large-diameter slurry shield. The shield comprises a shield body, a main driving main body, a main driving sliding bearing assembly and a plurality of telescopic oil cylinders; the main driving main body is connected with the shield body through a main driving sliding bearing assembly; the plurality of telescopic oil cylinders are arranged on the shield body, and the output end of the telescopic oil cylinders is connected with the rear end of the main driving main body; the main driving sliding bearing assembly comprises a fixed flange, a wear-resistant sliding sleeve, a supporting framework and an outer side sealing assembly; the supporting framework is sleeved on the main driving body, and the end part of the supporting framework is fixedly connected with the shield body through a fixing flange; the wear-resistant sliding sleeve is arranged on the inner side of the supporting framework and is in sliding fit with the main driving body; the outer side sealing assembly is sleeved on the outer side of the supporting framework and is compressed by the compression ring along the axial direction, so that the outer side sealing assembly is connected with the shield body in a sealing mode. The adjustable type boring machine can adjust the retraction and extension of the oil cylinder to drive the main drive and the cutter head to retreat or advance, thereby adjusting the feed amount of the cutter head, enabling the cutter head to rotate and continuing cutting and boring.
Description
Technical Field
The invention relates to underground shield construction equipment, in particular to a main driving mechanism of a large-diameter slurry shield.
Background
The main driving system of the traditional shield machine is completely fixed on the shield body of the shield machine and cannot move back and forth relative to the shield body, namely the shield machine drives the cutter head to rotate, and under the action of the shield body propelling oil cylinder, the shield body and the cutter head can only drive forwards, but the cutter head cannot move backwards. This main drive is not defective during normal driving, but conventional main drives are difficult to handle in three situations:
when obstacles such as large floating stones, building foundations, tree roots and the like appear at the front part of a cutter head of a shield machine, the cutter head is often easily clamped and cannot be used for continuous tunneling, and sometimes, the tunneling cannot be continuously performed even after a storage motor is added.
When the shield machine is restarted after being stopped for a long time, because the soil at the front part of the shield machine after being stopped for a long time is solidified and becomes harder, the main drive can not drive the cutter head to start and rotate.
The other situation is that when the soil condition is soft, the shield tunneling machine often falls during tunneling, so that the shield tunneling machine deviates from the tunneling direction, and the traditional cutter head driving system is not easy to correct the situation of falling during tunneling and is difficult to operate.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a main driving mechanism for a large-diameter slurry shield machine, so as to solve many defects caused by that a shield machine cutter head can only drive forwards but cannot move backwards.
In order to achieve the purpose, the invention adopts the following technical scheme:
a main driving mechanism of a large-diameter slurry shield is characterized by comprising a shield body, a main driving main body, a main driving sliding bearing assembly and a plurality of telescopic oil cylinders; the main driving main body is connected to the inner side of the shield body through a main driving sliding bearing assembly; the plurality of telescopic oil cylinders are circumferentially arranged on the shield body, the output end of the telescopic oil cylinders is connected with the rear end of the main driving main body, and the plurality of telescopic oil cylinders are used for driving the main driving main body to axially stretch;
the main driving sliding bearing assembly comprises a fixed flange, a wear-resistant sliding sleeve, a supporting framework and an outer side sealing assembly; the supporting framework is sleeved on the main driving body, and the end part of the supporting framework is fixedly connected with the shield body through a fixing flange; the wear-resistant sliding sleeve is arranged on the inner side of the supporting framework and is in sliding fit with the main driving main body; the outer side sealing assembly is sleeved on the outer side of the supporting framework and is compressed by the compression ring along the axial direction, so that the outer side sealing assembly is connected with the shield body in a sealing mode.
The outer side sealing assembly comprises a metal spacer ring and outer side rubber sealing ring groups arranged on two sides of the metal spacer ring.
The outside rubber seal group includes the outside rubber seal of a plurality of superpositions and sets up in the nylon spacer ring at a plurality of outside rubber seal both ends.
The inner wall of the supporting framework is provided with a groove, and the wear-resistant sliding sleeve is embedded in the groove.
The fixed flange is connected with the main driving main body in a sealing mode through an inner side rubber sealing ring I;
one end, far away from the fixed flange, of the supporting framework is connected with the main driving body in a sealing mode through an inner side rubber sealing ring II.
The main driving main body comprises a main driving fixing ring, a cutter head, a slewing bearing, a main driving rotating ring and a plurality of driving motors, wherein the main driving fixing ring is in sliding fit with the main driving sliding bearing assembly and is connected with the telescopic driving mechanism;
the main driving rotating ring is connected with the main driving fixing ring through a slewing bearing; the cutter head is connected with the main driving rotating ring;
the driving motors are arranged on the main driving fixing ring along the circumferential direction, and the output ends of the driving motors are connected with the main driving rotating ring through a transmission device.
The transmission device comprises an inner gear ring and a plurality of driving gears, wherein the inner gear ring is connected with the main driving rotating ring, and the plurality of driving gears are respectively arranged at the output ends of the plurality of driving motors and are meshed with the inner gear ring.
The both sides of the main drive fixing ring are provided with fixing frames, and the fixing frames are in sliding fit with guide grooves formed in the shield body.
The invention has the advantages and beneficial effects that: the shield machine main driving mechanism designed by the invention realizes the retreating function of the cutter head body and has the advantages that:
1. when obstacles such as large floating stones, building foundations, tree roots and the like appear at the front part of the cutter head of the shield tunneling machine and the cutter head is blocked, the retraction and the extension of the oil cylinder can be adjusted to drive the main drive and the cutter head to retreat or advance, so that the feeding amount of the cutter head is adjusted, the cutter head can rotate and continue to cut and tunnel.
2. When the shield machine is restarted after being stopped for a long time, the adjusting oil cylinder can be properly withdrawn, the main driving belt drives the cutter head to withdraw, the cutter head temporarily leaves the front soil tunnel face, then the main driving motor is started again, the cutter head is driven to rotate, and then the cutter head is gradually pushed forward to cut and tunnel.
3. When the shield machine has a head lowering condition during tunneling, the head lowering condition and the tunneling direction of the shield machine can be corrected to a certain extent by adjusting the main driving telescopic oil cylinder.
Drawings
FIG. 1 is a schematic structural diagram of a main driving mechanism of a large-diameter slurry shield according to the present invention;
FIG. 2 is an enlarged view taken at I in FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a schematic diagram of the retracted state of the main driving mechanism of the large-diameter slurry shield according to the present invention;
in the figure: 1 is the shield body, 2 is connecting bolt, 3 is driving motor, 4 is the main drive solid fixed ring, 5 is flexible hydro-cylinder, 6 is the blade disc, 7 is slewing bearing, 8 is the main drive rotatory ring, 9 is the main drive sliding bearing subassembly, 10 is the main drive main part, 11 is mounting flange, 12 is inboard rubber seal I, 13 is wear-resisting sliding sleeve, 14 is the support skeleton, 15 is inboard rubber seal II, 16 is outside rubber seal, 17 is the nylon spacer ring, 18 is the metal spacer ring, 19 is the clamp ring, 20 is the mount.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1, the main driving mechanism of the large-diameter slurry shield provided by the invention comprises a shield body 1, a main driving main body 10, a main driving sliding bearing assembly 9 and a plurality of telescopic oil cylinders 5, wherein the main driving main body 10 is connected to the inner side of the shield body 1 through the main driving sliding bearing assembly 9; the plurality of telescopic oil cylinders 5 are hinged to the shield body 1 along the circumferential direction, the output end of the telescopic oil cylinders is connected with the rear end of the main driving main body 10, and the plurality of telescopic oil cylinders 5 are used for driving the main driving main body 10 to stretch axially.
In an embodiment of the present invention, the main driving body 10 includes a main driving fixing ring 4, a cutter head 6, a slewing bearing 7, a main driving rotating ring 8 and a plurality of driving motors 3, wherein the main driving fixing ring 4 is in sliding fit with a main driving sliding bearing assembly 9 and is connected with a telescopic driving mechanism. The main driving rotating ring 8 is connected with the main driving fixing ring 4 through a slewing bearing 7, and the cutter head 6 is connected with the main driving rotating ring 8; the plurality of driving motors 3 are circumferentially arranged on the main driving fixed ring 4, and the output ends thereof are connected with the main driving rotary ring 8 through a transmission device.
In the embodiment of the present invention, the transmission device includes an inner gear ring and a plurality of driving gears, wherein the inner gear ring has a larger diameter and is connected to the main driving rotating ring 8, and the plurality of driving gears are respectively disposed at the output ends of the plurality of driving motors 3 and are engaged with the inner gear ring. The driving gear is driven to rotate by the driving motor 3, so that the inner gear ring and the main driving rotating ring 8 are driven to rotate, the cutter head 6 is driven to rotate, and cutting operation is carried out.
As shown in fig. 1 and 4, in the embodiment of the present invention, the rear end of the telescopic cylinder 5 is hinged to the shield body 1, and the output end is connected to the main driving fixing ring 4 of the main driving body 10. The plurality of telescopic cylinders 5 are synchronously telescopic to drive the main driving body 10 to be integrally telescopic relative to the shield body 1.
Specifically, when the shield tunneling machine has a head lowering condition during tunneling, the telescopic oil cylinder 5 is hinged with the shield body 1, and the head lowering condition and the tunneling direction of the shield tunneling machine can be corrected to a certain extent by adjusting the angle of the telescopic oil cylinder 5.
As shown in fig. 2, in the embodiment of the present invention, the main driving sliding bearing assembly 9 includes a fixing flange 11, a wear-resistant sliding sleeve 13, a supporting framework 14 and an outer sealing assembly, wherein the supporting framework 14 is sleeved on the main driving body 10, and an end portion of the supporting framework is connected with the fixing flange 11, and the fixing flange 11 is fixedly connected with the shield body 1 through the connecting bolt 2. The wear-resistant sliding sleeve 13 is arranged on the inner side of the supporting framework 14 and is in sliding fit with the main driving body 10; the outer side sealing component is sleeved outside the supporting framework 14 and is compressed by the compression ring 19 along the axial direction, so that the outer side sealing component is connected with the shield body 1 in a sealing manner.
In the embodiment of the present invention, the outer sealing assembly includes a metal spacer ring 18 and outer rubber sealing ring sets disposed on two sides of the metal spacer ring 18. The outer rubber seal ring set comprises a plurality of outer rubber seal rings 16 which are overlapped and nylon spacer rings 18 which are arranged at two ends of the plurality of outer rubber seal rings 16.
Further, the inner wall of the supporting framework 14 is provided with a groove, and the wear-resistant sliding sleeve 13 is embedded in the groove to prevent the wear-resistant sliding sleeve 13 from moving axially.
Further, the fixed flange 11 is hermetically connected with the main driving body 10 through an inner side rubber sealing ring I; one end of the supporting framework 14 far away from the fixed flange 11 is connected with the main driving body 10 in a sealing mode through an inner rubber sealing ring II 15.
On the basis of the above embodiment, as shown in fig. 3, the fixing frame 20 is disposed on both sides of the main driving fixing ring 4, and the fixing frame 20 is slidably engaged with the guiding groove disposed on the shield body 1. The fixing frame 20 connects the main driving body 10 to the shield body 1, and prevents the main driving body 10 from rotating, i.e. ensures that the main driving body 10 only moves freely along the axial direction of the tunnel, ensures that the rotational degree of freedom and the degrees of freedom in other directions are fixed, and can finely adjust the advancing and retreating of the main driving body 10 through the telescopic oil cylinder 5.
The main driving mechanism of the large-diameter slurry shield machine provided by the embodiment of the invention has the function of telescopic adjustment along the tunneling axial direction of the shield machine, the main driving sliding bearing assembly 9 fixed on the shield body 1 is additionally arranged on the outer ring of the main driving main body 10, so that the main driving main body 10 can axially slide relative to the main driving sliding bearing assembly 9, the main driving sliding bearing assembly 9 ensures that the main driving main body 10 smoothly slides, and meanwhile, the sealing between the two sides and the main driving main body 10 and the shield body 1 is ensured. Nine telescopic oil cylinders 5 are connected to the rear portion of the main driving body 10, one ends of the telescopic oil cylinders 5 are connected to the main driving body 10, and the other ends of the telescopic oil cylinders 5 are connected to the rear portion of the shield body, so that telescopic movement of the telescopic oil cylinders 5 can drive the main driving body 10 to axially move, the cutter head 6 is driven to axially move, and the retreating function of the cutter head 6 is achieved. When the driving motor 3 drives the main driving rotating ring 8 to rotate, the main driving rotating ring 8 drives the cutter head 6 to rotate together, and then the cutter head 6 can cut soil and rocks so as to achieve the aim of tunneling by the shield tunneling machine.
Specifically, when obstacles such as large floating stones, building foundations, tree roots and the like appear at the front part of the cutter head 6 of the shield tunneling machine and the cutter head 6 is blocked, the telescopic oil cylinder 5 can be adjusted to retract or extend to drive the cutter head 6 of the main driving body 10 to retreat or advance, so that the feeding amount of the cutter head 6 is adjusted, the cutter head 6 can rotate to continue cutting and tunneling.
Specifically, when the shield tunneling machine is restarted after being stopped for a long time, the telescopic oil cylinder 5 can be withdrawn in a proper amount, the main driving body 10 drives the cutter head 6 to withdraw, the cutter head is temporarily separated from the front soil tunnel face, then the driving motor 3 is started again, the cutter head 6 is driven to rotate, and then the cutter head 6 is gradually pushed forward to cut and tunnel.
Specifically, when the shield machine has a 'head lowering' condition during tunneling, the 'head lowering' condition and the tunneling direction of the shield machine can be corrected to a certain extent by adjusting the telescopic oil cylinder 5.
The main driving mechanism of the large-diameter slurry shield machine provided by the embodiment of the invention has the function of telescopic adjustment along the tunneling axial direction of the shield machine, and realizes the retreating function in the tunneling of a cutter head so as to achieve the aim of smoothly tunneling the shield machine.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (8)
1. A main driving mechanism of a large-diameter slurry shield is characterized by comprising a shield body (1), a main driving main body (10), a main driving sliding bearing assembly (9) and a plurality of telescopic oil cylinders (5);
the main driving main body (10) is connected to the inner side of the shield body (1) through a main driving sliding bearing assembly (9), the plurality of telescopic oil cylinders (5) are hinged to the shield body (1) along the circumferential direction, the output end of the telescopic oil cylinders is connected with the rear end of the main driving main body (10), and the plurality of telescopic oil cylinders (5) are used for driving the main driving main body (10) to stretch axially;
the main driving sliding bearing assembly (9) comprises a fixed flange (11), a wear-resistant sliding sleeve (13), a supporting framework (14) and an outer side sealing assembly; wherein the supporting framework (14) is sleeved on the main driving main body (10), and the end part of the supporting framework is fixedly connected with the shield body (1) through a fixing flange (11); the wear-resistant sliding sleeve (13) is arranged on the inner side of the supporting framework (14) and is in sliding fit with the main driving body (10); the outer side sealing assembly is sleeved on the outer side of the supporting framework (14) and is pressed by the pressing ring (19) along the axial direction, so that the outer side sealing assembly is connected with the shield body (1) in a sealing mode.
2. The main driving mechanism of the large-diameter slurry shield according to claim 1, wherein the outer sealing assembly comprises a metal spacer ring (18) and outer rubber sealing ring sets arranged on two sides of the metal spacer ring (18).
3. The main driving mechanism of the large-diameter slurry shield according to claim 2, wherein the outer rubber sealing ring set comprises a plurality of outer rubber sealing rings (16) which are stacked and nylon spacer rings (18) which are arranged at two ends of the plurality of outer rubber sealing rings (16).
4. The main driving mechanism of the large-diameter slurry shield according to claim 1, wherein the inner wall of the supporting framework (14) is provided with a groove, and the wear-resistant sliding sleeve (13) is embedded in the groove.
5. The main driving mechanism of the large-diameter slurry shield machine according to claim 1, wherein the fixed flange (11) is connected with the main driving body (10) in a sealing way through an inner rubber sealing ring I;
one end, far away from the fixed flange (11), of the supporting framework (14) is connected with the main driving body (10) in a sealing mode through an inner side rubber sealing ring II (15).
6. The main drive mechanism of a large-diameter slurry shield according to claim 1, wherein the main drive body (10) comprises a main drive stationary ring (4), a cutter head (6), a slew bearing (7), a main drive rotating ring (8), and a plurality of drive motors (3), wherein the main drive stationary ring (4) is in sliding fit with the main drive plain bearing assembly (9) and is connected with the telescopic drive mechanism;
the main driving rotating ring (8) is connected with the main driving fixing ring (4) through a slewing bearing (7); the cutter head (6) is connected with the main driving rotating ring (8);
the driving motors (3) are arranged on the main driving fixing ring (4) along the circumferential direction, and the output ends of the driving motors are connected with the main driving rotating ring (8) through a transmission device.
7. The main driving mechanism of a large-diameter slurry shield according to claim 6, wherein the transmission device comprises an inner gear ring and a plurality of driving gears, wherein the inner gear ring is connected with the main driving rotating ring (8), and the plurality of driving gears are respectively arranged at the output ends of the plurality of driving motors (3) and are meshed with the inner gear ring.
8. The main driving mechanism of the large-diameter slurry shield machine according to claim 6, wherein the fixing frames (20) are arranged on both sides of the main driving fixing ring (4), and the fixing frames (20) are in sliding fit with the guide grooves arranged on the shield body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298117.9A CN114060046B (en) | 2021-11-04 | 2021-11-04 | Major diameter slurry shield constructs owner actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298117.9A CN114060046B (en) | 2021-11-04 | 2021-11-04 | Major diameter slurry shield constructs owner actuating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114060046A true CN114060046A (en) | 2022-02-18 |
| CN114060046B CN114060046B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111298117.9A Active CN114060046B (en) | 2021-11-04 | 2021-11-04 | Major diameter slurry shield constructs owner actuating mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN114060046B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953735A (en) * | 2012-12-04 | 2013-03-06 | 大连华锐重工集团股份有限公司 | Composite soil pressure balance shield with front support and back support |
| CN103104263A (en) * | 2013-02-05 | 2013-05-15 | 中船重工（青岛）轨道交通装备有限公司 | Heading machine suitable for complex stratum |
| CN203130088U (en) * | 2013-04-01 | 2013-08-14 | 中国铁建重工集团有限公司 | Telescopic mechanism for master drive of full-face tunnel boring machine |
| CN104196538A (en) * | 2014-09-05 | 2014-12-10 | 中船重工（青岛）轨道交通装备有限公司 | Combined type double-shield tunneling machine |
| CN205805558U (en) * | 2016-05-30 | 2016-12-14 | 中铁工程装备集团有限公司 | A kind of novel main driving of shield formula TBM |
| CN110985020A (en) * | 2019-11-29 | 2020-04-10 | 中铁工程装备集团有限公司 | Active articulated shield tunneling machine with independent extension and swing over-excavation capabilities of cutter head |
| CN216342139U (en) * | 2021-11-04 | 2022-04-19 | 辽宁三三工业有限公司 | Major diameter slurry shield constructs owner actuating mechanism |
-
2021
- 2021-11-04 CN CN202111298117.9A patent/CN114060046B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953735A (en) * | 2012-12-04 | 2013-03-06 | 大连华锐重工集团股份有限公司 | Composite soil pressure balance shield with front support and back support |
| CN103104263A (en) * | 2013-02-05 | 2013-05-15 | 中船重工（青岛）轨道交通装备有限公司 | Heading machine suitable for complex stratum |
| CN203130088U (en) * | 2013-04-01 | 2013-08-14 | 中国铁建重工集团有限公司 | Telescopic mechanism for master drive of full-face tunnel boring machine |
| CN104196538A (en) * | 2014-09-05 | 2014-12-10 | 中船重工（青岛）轨道交通装备有限公司 | Combined type double-shield tunneling machine |
| CN205805558U (en) * | 2016-05-30 | 2016-12-14 | 中铁工程装备集团有限公司 | A kind of novel main driving of shield formula TBM |
| CN110985020A (en) * | 2019-11-29 | 2020-04-10 | 中铁工程装备集团有限公司 | Active articulated shield tunneling machine with independent extension and swing over-excavation capabilities of cutter head |
| CN216342139U (en) * | 2021-11-04 | 2022-04-19 | 辽宁三三工业有限公司 | Major diameter slurry shield constructs owner actuating mechanism |
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| Publication number | Publication date |
|---|---|
| CN114060046B (en) | 2024-04-26 |
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