CN214305270U - Sealing system of shield machine main drive - Google Patents
Sealing system of shield machine main drive Download PDFInfo
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- CN214305270U CN214305270U CN202120600829.0U CN202120600829U CN214305270U CN 214305270 U CN214305270 U CN 214305270U CN 202120600829 U CN202120600829 U CN 202120600829U CN 214305270 U CN214305270 U CN 214305270U
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Abstract
The utility model discloses a shield constructs owner driven sealing system, shield constructs owner and drives including fluid passage case, the rotatory ring of blade disc, the rotatory center collineation of fluid passage case and the rotatory ring of blade disc, sealing system establishes at sword wear ring and seal assembly including the cover, seal assembly includes that the multiunit cover establishes the sealing washer on wear ring, still be equipped with the adjustment mechanism that can adjust the rotatory ring axial displacement of the relative blade disc of wear ring between wear ring and the rotatory ring of blade disc, the inboard week portion of sealing washer supports and leans on in wear ring outside week portion. The utility model discloses a sealing system is provided with the adjustment mechanism that can adjust axial distance between the two between the rotatory ring of wear-resisting ring and blade disc for axial displacement can be followed to the wear-resisting ring, thereby changes the inboard week portion of sealing washer and the contact position of the week portion of the wear-resisting ring outside, has not only improved the life of wear-resisting ring, has reduceed manufacturing cost, does not need frequently to change wear-resisting ring moreover, makes sealing system can be applicable to the occasion of long distance continuous tunnelling.
Description
Technical Field
The utility model relates to a shield constructs owner driven sealing system.
Background
In order to prevent the entry of the soil in the soil bin into the bearing housing during the driving of the shield machine, a sealing system is generally provided between the rotating part of the main drive connected to the cutter head and the bearing housing. The shield machine main driving sealing system generally comprises a plurality of lip-shaped sealing rings or finger-shaped sealing rings, is generally made of nitrile rubber or polyurethane, and plays a vital role in normal operation of the shield machine.
However, when the seal ring is used, the lip of the seal ring and the surface of the wear-resistant ring relatively rotate and rub for a long time, so that the sliding surface on the wear-resistant ring is seriously worn, generally, the sliding surface of the shield machine is worn by about 1mm every time the shield machine tunnels for about 1 km, and along with the increase of the wear loss, the sealing bearing capacity is reduced or the sealing fails, so that the main driving system is damaged, the wear-resistant ring needs to be frequently replaced, namely, the service life of the wear-resistant ring is short, the production cost is high, and the cutter head needs to be detached when the wear-resistant ring is replaced, so that the seal system is troublesome, and generally cannot be applied to occasions where long-distance continuous tunneling is performed.
Disclosure of Invention
The utility model aims at providing a shield constructs owner and drives sealing system with adjustable.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a shield constructs owner driven sealing system, shield constructs owner drive contain the fluid passage case that has a plurality of fluid passage, can be relative the rotatory ring of fluid passage case pivoted blade disc, install in the blade disc of the rotatory ring front end of blade disc, the fluid passage case with the collinear extension of rotation center of the rotatory ring of blade disc, sealing system establishes including the cover the wear ring and the setting of the rotatory outside week portion of blade disc are in the inboard circumferential seal assembly of fluid passage case, seal assembly includes that the multiunit cover is established the sealing washer on the wear ring, all axial interval distribution is followed to the sealing washer, the wear ring with still be equipped with between the rotatory ring of blade disc and adjust the wear ring is relative the rotatory axial displacement's of blade disc adjustment mechanism, the inboard week portion of sealing washer supports and leans on in wear ring outside week portion, the axial position of all the sealing rings on the fluid channel box is relatively fixedly arranged.
Preferably, the adjusting mechanism comprises an annular boss arranged at the front end of the wear-resistant ring, a plurality of groups of adjusting holes extending along the axial direction are formed in the annular boss, the adjusting holes are threaded through holes, the adjusting mechanism further comprises an adjusting bolt matched with the adjusting holes, and the length of the stud of the adjusting bolt is larger than the depth of the adjusting hole.
Preferably, the adjusting holes are counter-sunk holes, and the adjusting holes are arrayed along the circumferential direction of the annular boss.
Preferably, the cutter head rotating ring comprises a connecting section and a sealing section which are connected in the axial direction, the cutter head is connected to the connecting section, the wear-resistant ring is sleeved on the periphery of the outer side of the sealing section, the outer diameter of the connecting section is smaller than that of the sealing section, the connecting section and the sealing section form a step surface, the inner diameter of the annular boss is larger than or equal to that of the connecting section, and the annular boss is abutted to the step surface.
Further, the sealing system has an initial state and an adjusting state, and when the sealing system is in the initial state, the rear end face of the annular boss is attached to the step face; when the sealing system is in an adjusting state, a gap is formed between the rear end face of the annular boss and the step face, and the adjusting bolt is supported on the step face.
Preferably, a plurality of groups of mounting holes extending along the axial direction are further formed in the annular boss, all the mounting holes are distributed in an array manner along the circumferential direction of the annular boss, threaded holes corresponding to the mounting holes one to one are formed in the cutter head rotating ring, and mounting bolts capable of being matched with the threaded holes are further arranged between the mounting holes and the threaded holes.
Preferably, the mounting hole is a countersunk hole, and the mounting bolt is arranged in the mounting hole in a penetrating manner and matched with the threaded hole.
Preferably, the sealing system further comprises a labyrinth ring fixedly connected with the fluid channel box, at least one set of radial gaps and at least one set of axial gaps are formed between the labyrinth ring and the front end of the wear ring, and the radial gaps and the axial gaps are communicated with each other.
Furthermore, a passage for grease to pass through is formed in the labyrinth ring, and the passage is communicated with the axial gap and the radial gap.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a shield constructs owner driven sealing system, wherein be provided with the adjustment mechanism that can adjust axial distance between the two between wear-resisting ring and the rotatory ring of blade disc for axial displacement can be followed to the wear-resisting ring, thereby change the inboard week portion of sealing washer and wear-resisting ring outside week portion's contact position, not only improved the life of wear-resisting ring, reduce manufacturing cost, need not frequently change wear-resisting ring moreover, make owner driven sealing system can be applicable to the occasion of the continuous tunnelling of long distance.
Drawings
Fig. 1 is a schematic structural diagram of the shield machine main drive sealing system of the present invention in an adjusting state;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A:
FIG. 3 is a schematic structural view of an adjusting bolt;
fig. 4 is a schematic structural diagram of the shield machine main drive sealing system of the present invention in an initial state;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B:
FIG. 6 is a schematic view of the construction of the mounting bolt;
wherein:
1. a fluid channel box; 11. a fluid channel;
2. a cutter head rotating ring; 21. a connecting section; 22. a sealing section;
3. a cutter head;
4. a sealing system; 41. a wear ring; 42. a seal assembly; 421. a seal ring; 43. a labyrinth ring; 431. an axial clearance; 432. a radial gap;
51. an annular boss; 511. an adjustment hole; 512. mounting holes; 52. adjusting the bolt; 53. and (6) installing a bolt.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Referring to the drawings, a sealing system of a shield machine main drive is shown in the drawings, wherein the shield machine main drive comprises a fluid channel box 1 with a plurality of fluid channels 11, a cutter head rotating ring 2 capable of rotating relative to the fluid channel box 1, and a cutter head 3 installed at the front end of the cutter head rotating ring 2, the rotating centers of the fluid channel box 1 and the cutter head rotating ring 2 extend in a collinear manner, the sealing system 4 comprises a wear-resistant ring 41 sleeved on the outer peripheral portion of the cutter head rotating ring 2 and a sealing assembly 42 arranged on the inner peripheral portion of the fluid channel box 1, the sealing assembly 42 comprises a plurality of groups of sealing rings 421 sleeved on the wear-resistant ring 41, all the sealing rings 421 are distributed at intervals along the axial direction, an adjusting mechanism capable of adjusting the axial displacement of the wear-resistant ring 41 relative to the cutter head 2 is further arranged between the wear-resistant ring 41 and the cutter head rotating ring 2, the inner peripheral portion of the sealing rings 421 abuts against the outer peripheral portion of the wear-resistant ring 41, all the sealing rings 421 are arranged relatively fixedly in the axial position on the fluid channel box 1.
Referring to fig. 1 and 2, the adjusting mechanism includes an annular boss 51 disposed at the front end of the wear-resistant ring 41, the annular boss 51 and the wear-resistant ring 41 are integrally disposed, a plurality of groups of adjusting holes 511 extending along the axial direction are formed in the annular boss 51, the adjusting holes 511 are threaded through holes, the adjusting mechanism further includes an adjusting bolt 52 capable of being matched with the adjusting holes 511, and the stud length of the adjusting bolt 52 is greater than the hole depth of the adjusting hole 511.
Referring to fig. 4 and 5, a plurality of sets of mounting holes 512 extending in the axial direction are further formed in the annular boss 51, all the mounting holes 512 are circumferentially distributed in an array manner along the annular boss 51, threaded holes corresponding to the mounting holes 512 one to one are formed in the cutter head rotating ring 2, mounting bolts 53 capable of being matched with the threaded holes are further arranged between the mounting holes 512 and the threaded holes, the mounting bolts 53 are arranged in the mounting holes 512 in a penetrating manner and matched with the threaded holes, and the length of studs of the mounting bolts 53 is greater than that of the mounting holes 512.
Referring to fig. 2 and 5, in this embodiment, the adjusting holes 511 and the mounting holes 512 are both countersunk holes, which can reduce the influence of silt on the adjusting bolts 52, protect the adjusting bolts 52 and the mounting bolts 53 to a certain extent, and the adjusting holes 511 are arranged in a circumferential array along the annular boss 51, so that the annular boss 51 is uniformly stressed, and it is ensured that the space between the wear-resistant ring 41 and the seal assembly 42 is more stable in the operation process of the shield machine.
Referring to fig. 1 and 4, the cutter head rotating ring 2 includes a connecting section 21 and a sealing section 22 which are axially connected, the cutter head 3 is connected to the connecting section 21, the wear-resistant ring 41 is sleeved on the outer periphery of the sealing section 22, the outer diameter of the connecting section 21 is smaller than that of the sealing section 22, the connecting section 21 and the sealing section 22 form a step surface (not shown in the figure), the inner diameter of the annular boss 51 is larger than or equal to the outer diameter of the connecting section 21, and the annular boss 51 abuts against the step surface.
The sealing system 4 further comprises a labyrinth ring 43 fixedly connected with the fluid channel box 1, at least one group of radial gaps 432 and at least one group of axial gaps 431 are formed between the labyrinth ring 43 and the front end of the wear-resistant ring 41, the radial gaps 432 and the axial gaps 431 are communicated with each other, a channel for grease to pass is formed in the labyrinth ring 43, and the channel is communicated with the axial gaps 431 and the radial gaps 432. In this embodiment, the axial gap 431 and the radial gap 432 are perpendicular to each other, so that, during operation, silt or ballast can be prevented from entering the inside of the fluid channel box 1, and grease enters the axial gap 431 and the radial gap 432 through the grease channel on the labyrinth ring 43, so that silt can be further blocked.
The sealing system 4 has an initial state and an adjusting state, and referring to fig. 1, when the sealing system 4 is in the initial state, the rear end face of the annular boss 51 is attached to the step face, the mounting bolt 53 is inserted into the mounting hole 512, the mounting bolt 53 is matched with the threaded hole, and at this time, the adjusting bolt 52 is matched with the adjusting hole 511, so that silt is prevented from entering the adjusting hole 511 and blocking the adjusting hole 511 in the working process to influence the subsequent adjusting work; referring to fig. 4, when the sealing system 4 is in the adjusting state, a gap is formed between the rear end surface of the annular boss 51 and the step surface, and the adjusting bolt 52 is supported on the step surface, and the radial gap 432 is always present. In other embodiments, when the sealing system 4 is in the initial state, a sealing bolt (not shown) may be installed in the adjustment hole 511 instead of the adjustment bolt 52, and the length of the sealing bolt is smaller than the length of the adjustment hole 511, so as to prevent the adjustment bolt 52 from falling out of the adjustment hole 511 due to the untightening of the sealing bolt in the initial state; when adjustment of the wear ring 41 is required, the seal bolts are replaced with adjustment bolts 52.
The specific adjusting method of the sealing system 4 is as follows: all the mounting bolts 53 are unscrewed, the number of rotating turns is the same, a certain gap is formed between the annular boss 51 and the step surface, the adjusting bolts 52 are screwed, and the adjusting bolts 52 are supported on the step surface, so that the adjusting bolts 52 generate thrust to the cutter head rotating ring 2, and the mounting bolts 53 generate tension to the cutter head rotating ring, so that the connection between the wear-resistant ring 41 and the cutter head rotating ring 2 is stable and effective, and looseness cannot occur. When the sealing system 4 needs to be adjusted continuously, the operations are repeated.
To sum up, the utility model discloses a sealing system is provided with the adjustment mechanism that can adjust axial distance between the two between the wear-resisting ring 41 and the rotatory ring 2 of blade disc for axial displacement can be followed to wear-resisting ring 41, thereby changes the contact position of the inboard week portion of sealing washer 421 and the week portion of the wear-resisting ring 41 outside, has not only improved wear-resisting ring 41's life, has reduceed manufacturing cost, does not need frequently to change wear-resisting ring 41 moreover, makes sealing system 4 can be applicable to the occasion of the continuous tunnelling of long distance.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. The utility model provides a shield constructs owner driven sealing system, shield constructs owner drive contain the fluid passage case that has a plurality of fluid passage, can be relative the rotatory ring of fluid passage case pivoted blade disc, install in the blade disc of the rotatory ring front end of blade disc, the fluid passage case with the rotatory center of rotation collineation of blade disc extends, sealing system establishes including the cover the wear-resisting ring and the setting of the rotatory outside week portion of blade disc are in the seal assembly of the inboard circumference of fluid passage case, seal assembly includes that the multiunit cover is established seal ring, all on the wear-resisting ring axial interval distribution is followed to the seal ring, its characterized in that:
an adjusting mechanism capable of adjusting the axial displacement of the wear-resistant ring relative to the cutter head rotating ring is further arranged between the wear-resistant ring and the cutter head rotating ring, the peripheral part of the inner side of the sealing ring is abutted against the peripheral part of the outer side of the wear-resistant ring, and the axial positions of all the sealing rings on the fluid channel box are relatively fixedly arranged.
2. The sealing system of the shield machine main drive according to claim 1, characterized in that: the adjusting mechanism comprises an annular boss arranged at the front end of the wear-resistant ring, a plurality of groups of adjusting holes extending along the axial direction are formed in the annular boss, the adjusting holes are threaded through holes, the adjusting mechanism further comprises adjusting bolts matched with the adjusting holes, and the length of the studs of the adjusting bolts is larger than the depth of the adjusting holes.
3. The sealing system of the shield machine main drive according to claim 2, characterized in that: the adjusting holes are counter-sunk holes, and the adjusting holes are arrayed along the circumferential direction of the annular boss.
4. The sealing system of the shield machine main drive according to claim 2, characterized in that: the cutter head rotating ring comprises a connecting section and a sealing section which are connected in the axial direction, the cutter head is connected to the connecting section, the wear-resistant ring is sleeved on the periphery of the outer side of the sealing section, the outer diameter of the connecting section is smaller than that of the sealing section, the connecting section and the sealing section form a step surface, the inner diameter of the annular boss is larger than or equal to that of the connecting section, and the annular boss is abutted to the step surface.
5. The sealing system of the shield machine main drive according to claim 4, characterized in that: the sealing system has an initial state and an adjusting state, and when the sealing system is in the initial state, the rear end face of the annular boss is attached to the step face; when the sealing system is in an adjusting state, a gap is formed between the rear end face of the annular boss and the step face, and the adjusting bolt is supported on the step face.
6. The sealing system of the shield machine main drive according to claim 2, characterized in that: the annular boss is further provided with a plurality of groups of mounting holes extending along the axial direction, all the mounting holes are distributed along the circumferential array of the annular boss, the cutter head rotating ring is provided with threaded holes corresponding to the mounting holes one to one, and mounting bolts matched with the threaded holes are further arranged between the mounting holes and the threaded holes.
7. The sealing system of the shield machine main drive according to claim 6, characterized in that: the mounting hole is a countersunk smooth hole, and the mounting bolt is arranged in the mounting hole in a penetrating mode and matched with the threaded hole.
8. The sealing system of the shield machine main drive according to claim 2, characterized in that: the sealing system also comprises a labyrinth ring fixedly connected with the fluid channel box, at least one group of radial gaps and at least one group of axial gaps are formed between the labyrinth ring and the front end of the wear-resistant ring, and the radial gaps and the axial gaps are communicated with each other.
9. The sealing system of the main drive of the shield tunneling machine according to claim 8, characterized in that: and a passage for grease to pass through is formed in the labyrinth ring, and the passage is communicated with the axial gap and the radial gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120600829.0U CN214305270U (en) | 2021-03-24 | 2021-03-24 | Sealing system of shield machine main drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120600829.0U CN214305270U (en) | 2021-03-24 | 2021-03-24 | Sealing system of shield machine main drive |
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| Publication Number | Publication Date |
|---|---|
| CN214305270U true CN214305270U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120600829.0U Active CN214305270U (en) | 2021-03-24 | 2021-03-24 | Sealing system of shield machine main drive |
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| CN (1) | CN214305270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095647A (en) * | 2022-07-05 | 2022-09-23 | 中铁四局集团有限公司 | Novel shield or TBM main drive seal protection device and construction method thereof |
-
2021
- 2021-03-24 CN CN202120600829.0U patent/CN214305270U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095647A (en) * | 2022-07-05 | 2022-09-23 | 中铁四局集团有限公司 | Novel shield or TBM main drive seal protection device and construction method thereof |
| CN115095647B (en) * | 2022-07-05 | 2023-09-22 | 中铁四局集团有限公司 | Novel shield or TBM main drive sealing protection device and construction method thereof |
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