CN112196563A - Floating sealing device for shield tunneling machine - Google Patents
Floating sealing device for shield tunneling machine Download PDFInfo
- Publication number
- CN112196563A CN112196563A CN202011084863.3A CN202011084863A CN112196563A CN 112196563 A CN112196563 A CN 112196563A CN 202011084863 A CN202011084863 A CN 202011084863A CN 112196563 A CN112196563 A CN 112196563A
- Authority
- CN
- China
- Prior art keywords
- sealing
- connecting shaft
- cover plate
- face
- holding ring
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 77
- 230000005641 tunneling Effects 0.000 title claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052802 copper Inorganic materials 0.000 claims abstract description 40
- 239000010949 copper Substances 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 239000002689 soil Substances 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 7
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 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
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
-
- 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
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)
- Sealing Devices (AREA)
Abstract
The invention provides a floating sealing device for a shield tunneling machine, which comprises a connecting shaft and a rotating shaft, wherein the connecting shaft is fixedly connected with the rotating shaft, the connecting shaft penetrates through a bin body and is inserted into a soil bin, the floating sealing device also comprises an installation shell, a cover plate and a sealing mechanism, the cover plate and the installation shell are sleeved on the connecting shaft, the left end surface of the installation shell is hermetically connected with the bin body, the right end surface of the installation shell is fixedly connected with the cover plate, an installation cavity with an opening at the right end is arranged in the installation shell, the sealing mechanism is arranged in the installation cavity and sleeved on the connecting shaft, the sealing mechanism comprises a positioning ring and a sealing assembly, the sealing assembly comprises a copper sleeve and a sealing ring, the copper sleeve and the positioning ring are both sleeved on the connecting shaft, the sealing ring is arranged in a sealing groove of the copper sleeve, the copper sleeve can tightly cling to the outer, good sealing performance, difficult abrasion and long service life.
Description
Technical Field
The invention relates to a soil bin sealing device, in particular to a floating sealing device for a shield tunneling machine.
Background
The shield machine is used for tunnel construction, and has the characteristics of high automation degree, labor saving, high construction speed, one-step tunneling, no influence of weather, controllable ground settlement during excavation, reduction of influence on ground buildings, no influence on water traffic during underwater excavation and the like. The basic working principle of the shield tunneling machine is that a cylindrical steel component is pushed forwards along the axis of the tunnel to excavate soil.
When a cutter head of the shield machine is used for cutting, media such as foam or bentonite and the like are usually added to improve the cutting environment, so a central rotary joint for transmitting media is usually installed between the cutter head and a cabin body of the shield machine, the central rotary joint is installed in a soil cabin sealing device connected with the cutter head, the soil cabin sealing device extends out of a soil cabin, the effects of transmission of power of the cutter head, sealing of the soil cabin, conveying of the media and the like are considered, however, the coaxiality between the cutter head of the shield machine and the cabin body of the shield machine is large in error due to the manufacturing and assembling relation, and therefore the performance of the soil cabin sealing device has great influence on the shield machine.
In the prior art, in order to adjust the sealing structure of the soil bin sealing device at any time according to the difference of the coaxiality of the soil bin sealing device and the soil bin sealing device, the floating ring sealing device is used, but the floating ring is easy to wear under long-time work, the service life of the sealing property is short, and the reliability is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a floating sealing device for a shield machine, which solves the problems that in the prior art, a floating ring is easy to wear when working for a long time, the service life of the sealing performance is low, and the reliability is poor.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a floating seal device that shield constructs machine, includes connecting axle and pivot, the connecting axle with pivot fixed connection, the connecting axle passes the storehouse body and inserts in the soil storehouse, its characterized in that: the device also comprises an installation shell, a cover plate and a sealing mechanism; the cover plate is sleeved on the connecting shaft, the inner wall of the cover plate is in sealing contact with the outer wall of the connecting shaft, the left end face of the mounting shell is in sealing connection with the bin body, the right end face of the mounting shell is fixedly connected with the cover plate, a mounting cavity with an opening at the right end is arranged in the mounting shell, and the sealing mechanism is arranged in the mounting cavity and sleeved on the connecting shaft; sealing mechanism includes holding ring and seal assembly, seal assembly includes copper sheathing and sealing washer, the holding ring is installed in the installation cavity to the cover is established on the connecting axle, the inner wall of holding ring with the outer wall clearance of connecting axle sets up, the copper sheathing cover is established on the connecting axle, and set up the left side of holding ring, the right-hand member face of copper sheathing with the left end face seal of holding ring sets up, the copper sheathing with be provided with between the holding ring and avoid both relative pivoted to end the mechanism that splines, be equipped with the seal groove on the inner wall of copper sheathing, the sealing washer is installed in the seal groove.
Further: the rotation stopping mechanism comprises a first rotation stopping pin and a slot, the first rotation stopping pin is fixedly arranged on the left end face of the positioning ring, the slot is radially arranged on the right end face of the copper sleeve, the first rotation stopping pin is inserted into the slot, and the copper sleeve can radially move relative to the first rotation stopping pin.
Further: the sealing mechanism's quantity is a plurality of, and is a plurality of sealing mechanism all installs in the installation cavity, and follow the axial of connecting axle is arranged in proper order, seals between the adjacent sealing mechanism and sets up.
Further: and an oil filling port is arranged on the mounting shell and communicated with the mounting cavity through a lubricating oil passage.
Further: be equipped with first pinhole on the holding ring, be equipped with the second pinhole on the apron, insert in proper order from a right side to a left side through the pin can be a plurality of in second pinhole and the first pinhole sealing component fixes on the apron.
Further: the sealing assembly is arranged between the positioning ring at the rightmost side and the cover plate, and the second rotation stopping pin is also arranged on the left end face of the cover plate and inserted into the slot of the copper sleeve at the rightmost end.
The floating sealing device for the shield tunneling machine has the advantages that the copper sleeve capable of moving in a manner of being tightly attached to the outer wall of the connecting shaft and the positioning ring capable of limiting the rotation of the copper sleeve are arranged, a gap is reserved between the inner wall of the positioning ring and the outer wall of the connecting shaft, a large coaxiality error between the outer circle of the connecting shaft and the rotation center is allowed, the device is precise in structural design, good in sealing performance, not prone to abrasion and long in service life.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a floating seal device for a shield tunneling machine according to the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
In the figure, 1, a connecting shaft, 2, a rotating shaft, 3, a bin body, 4, a mounting shell, 5, a cover plate, 6, a mounting cavity, 7, a positioning ring, 8, a copper sleeve, 9, a sealing ring, 10, a first rotation stopping pin, 11, a slot, 12, an oil injection port, 13, a lubricating oil channel, 14 and a pin are arranged.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
As shown in fig. 1, the invention provides a floating sealing device for a shield tunneling machine, which comprises a connecting shaft 1 and a rotating shaft 2, wherein the connecting shaft 1 is fixedly connected with the rotating shaft 2, the connecting shaft 1 penetrates through a bin body 3 to be inserted into a soil bin, and the floating sealing device also comprises an installation shell 4, a cover plate 5 and a sealing mechanism; the cover plate 5 is sleeved on the connecting shaft 1, the inner wall of the cover plate 5 is in sealing contact with the outer wall of the connecting shaft 1, the left end face of the mounting shell 4 is in sealing connection with the bin body 3, the right end face of the mounting shell 4 is fixedly connected with the cover plate 5, a mounting cavity 6 with an opening at the right end is arranged in the mounting shell 4, and the sealing mechanism is arranged in the mounting cavity 6 and sleeved on the connecting shaft 1; sealing mechanism includes holding ring 7 and seal assembly, seal assembly includes copper sheathing 8 and sealing washer 9, holding ring 7 is installed in installation cavity 6 to the cover is established on connecting axle 1, the inner wall of holding ring 7 with the outer wall clearance of connecting axle 1 sets up, copper sheathing 8 cover is established on connecting axle 1, and set up the left side of holding ring 7, the right-hand member face of copper sheathing 8 with the left end face seal of holding ring 7 sets up, copper sheathing 8 with be provided with between the holding ring 7 and avoid both relative pivoted to splines the mechanism, be equipped with the seal groove on the inner wall of copper sheathing 8, sealing washer 9 is installed in the seal groove.
When the shield machine works, excavated soil ash is stored in a soil bin, a connecting shaft 1 penetrates through the head part of a bin body 3 and is inserted into the soil bin, so that in order to avoid the leakage of the soil ash in the soil bin along the gap between the connecting shaft 1 and an opening part, a sealing device is required to be arranged to prevent the leakage of soil ash impurities, and a certain coaxiality error exists between the rotating center of the connecting shaft 1 and the opening axis of the bin body 3 due to processing, manufacturing and assembling, therefore, the floating sealing device is arranged to seal the soil bin, when the shield machine is installed, an installation shell 4 is sleeved on the connecting shaft 1, the end surface of the installation shell 4, which is in contact with the bin body 3, is subjected to sealing treatment, then the sealing mechanism is sleeved on the connecting shaft 1 and is installed in an installation cavity 6, a positioning ring 7 and a copper sleeve 8 in the sealing mechanism are also subjected to sealing arrangement, a radial gap exists between the positioning ring 7 and the connecting shaft 1, the copper sleeve 8 can move along the radial direction, so that the copper sleeve 8 can always keep concentric with the excircle of the connecting shaft 1 and is always in sealing connection with the outer wall of the connecting shaft 1.
The rotation stopping mechanism comprises a first rotation stopping pin 10 and a slot 11, the first rotation stopping pin 10 is fixedly arranged on the left end face of the positioning ring 7, the slot 11 is radially arranged on the right end face of the copper sleeve 8, the first rotation stopping pin 10 is inserted into the slot 11, and the copper sleeve 8 can move relative to the first rotation stopping pin 10 along the radial direction. When the connecting shaft 1 rotates, the copper sleeve 8 can be driven to rotate, in order to limit the rotation of the copper sleeve 8, a first rotation stopping pin 10 is arranged on the positioning ring 7 to limit the rotation of the copper sleeve 8, in order to not limit the radial movement of the copper sleeve 8, a slot 11 in the radial length direction is formed in the copper sleeve 8, and the copper sleeve 8 can move along the length direction of the slot 11. The sealing mechanism's quantity is a plurality of, and is a plurality of sealing mechanism all installs in installation cavity 6 to follow the axial of connecting axle 1 is arranged in proper order, seals between the adjacent sealing mechanism and sets up.
An oil filling port 12 is formed in the mounting shell 4, and the oil filling port 12 is communicated with the mounting cavity 6 through a lubricating oil passage 13. Lubricating grease can be injected into the mounting cavity 6 through the oil filling port 12 and the lubricating oil channel 13, so that the mounting cavity 6 is full of the lubricating grease, dust impurities are extruded out, meanwhile, the abrasion of the connecting shaft 1 and the positioning ring 7 is reduced, and the service life is prolonged. The locating ring 7 is provided with a first pin hole, the cover plate 5 is provided with a second pin hole, and the pin 14 is inserted into the second pin hole and the first pin hole from right to left in sequence to fix the sealing assembly on the cover plate 5. The positioning rings 7 and the cover plate 5 are fixed together, so that the positioning rings 7 can be prevented from rotating along with the connecting shaft 1, and the sealing performance of the device can be improved by pressing the sealing devices together through the cover plate 5. The sealing assembly is arranged between the rightmost positioning ring 7 and the cover plate 5, and the left end face of the cover plate 5 is also provided with a second rotation stopping pin which is inserted into a slot 11 of the rightmost copper sleeve 8.
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, a schematic representation of the term does not necessarily 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.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. The utility model provides a floating seal device that shield constructs machine, includes connecting axle (1) and pivot (2), connecting axle (1) with pivot (2) fixed connection, during connecting axle (1) passed storehouse body (3) and inserted the soil storehouse, its characterized in that: the device also comprises an installation shell (4), a cover plate (5) and a sealing mechanism;
the cover plate (5) is sleeved on the connecting shaft (1), the inner wall of the cover plate (5) is in sealing contact with the outer wall of the connecting shaft (1), the left end face of the mounting shell (4) is in sealing connection with the bin body (3), the right end face of the mounting shell (4) is fixedly connected with the cover plate (5), a mounting cavity (6) with an opening at the right end is arranged in the mounting shell (4), and the sealing mechanism is arranged in the mounting cavity (6) and sleeved on the connecting shaft (1);
sealing mechanism includes holding ring (7) and seal assembly, seal assembly includes copper sheathing (8) and sealing washer (9), holding ring (7) are installed in installation cavity (6), and the cover is established on connecting axle (1), the inner wall of holding ring (7) with the outer wall clearance of connecting axle (1) sets up, copper sheathing (8) cover is established on connecting axle (1), and set up the left side of holding ring (7), the right-hand member face of copper sheathing (8) with the sealed setting of the left end face of holding ring (7), copper sheathing (8) with be provided with between holding ring (7) and avoid both relative pivoted to end to rotate mechanism, be equipped with the seal groove on the inner wall of copper sheathing (8), install sealing washer (9) in the seal groove.
2. The floating seal device for a shield tunneling machine according to claim 1, wherein: the rotation stopping mechanism comprises a first rotation stopping pin (10) and a slot (11), the first rotation stopping pin (10) is fixedly arranged on the left end face of the positioning ring (7), the slot (11) is arranged on the right end face of the copper sleeve (8) in the radial direction, the first rotation stopping pin (10) is inserted into the slot (11), and the copper sleeve (8) can move relative to the first rotation stopping pin (10) in the radial direction.
3. The floating seal device for a shield tunneling machine according to claim 1, wherein: the sealing mechanism is arranged in the mounting cavity (6) in a plurality of numbers and arranged in sequence along the axial direction of the connecting shaft (1), and the adjacent sealing mechanisms are arranged in a sealing manner.
4. The floating seal device for a shield tunneling machine according to claim 1, wherein: an oil filling port (12) is formed in the mounting shell (4), and the oil filling port (12) is communicated with the mounting cavity (6) through a lubricating oil channel (13).
5. The floating seal device for a shield tunneling machine according to claim 1, wherein: be equipped with first pinhole on holding ring (7), be equipped with the second pinhole on apron (5), insert from right side to left in proper order through pin (14) can be a plurality of in second pinhole and the first pinhole sealing component fixes on apron (5).
6. The floating seal device for a shield tunneling machine according to claim 1, wherein: the sealing assembly is arranged between the positioning ring (7) on the rightmost side and the cover plate (5), and the second rotation stopping pin is arranged on the left end face of the cover plate (5) and is inserted into a slot (11) of the copper sleeve (8) on the rightmost end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011084863.3A CN112196563A (en) | 2020-10-12 | 2020-10-12 | Floating sealing device for shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011084863.3A CN112196563A (en) | 2020-10-12 | 2020-10-12 | Floating sealing device for shield tunneling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112196563A true CN112196563A (en) | 2021-01-08 |
Family
ID=74013512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011084863.3A Pending CN112196563A (en) | 2020-10-12 | 2020-10-12 | Floating sealing device for shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112196563A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10299387A (en) * | 1997-02-28 | 1998-11-10 | Komatsu Ltd | Disk cutter |
| CN106948830A (en) * | 2017-05-16 | 2017-07-14 | 郎溪腾旋科技有限公司 | A kind of native storehouse sealing device of novel shield machine |
| CN207348863U (en) * | 2017-09-21 | 2018-05-11 | 龙工(上海)液压有限公司 | A kind of centre revolving joint soil storehouse floating sealing structure device |
| CN214035672U (en) * | 2020-10-12 | 2021-08-24 | 郎溪腾旋科技有限公司 | Floating sealing device for shield tunneling machine |
-
2020
- 2020-10-12 CN CN202011084863.3A patent/CN112196563A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10299387A (en) * | 1997-02-28 | 1998-11-10 | Komatsu Ltd | Disk cutter |
| CN106948830A (en) * | 2017-05-16 | 2017-07-14 | 郎溪腾旋科技有限公司 | A kind of native storehouse sealing device of novel shield machine |
| CN207348863U (en) * | 2017-09-21 | 2018-05-11 | 龙工(上海)液压有限公司 | A kind of centre revolving joint soil storehouse floating sealing structure device |
| CN214035672U (en) * | 2020-10-12 | 2021-08-24 | 郎溪腾旋科技有限公司 | Floating sealing device for shield tunneling machine |
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Country or region after: China Address after: No. 65 Jianping Avenue, Langxi Economic Development Zone, Langxi County, Xuancheng City, Anhui Province, 242000 Applicant after: Anhui Tengxuan Machinery Manufacturing Co.,Ltd. Address before: 242199 Langxi County Economic Development Zone, Xuancheng, Anhui Applicant before: LANGXI TENGXUAN TECHNOLOGY Co.,Ltd. Country or region before: China |