Shield tunneling machine main drive shifting type sealing structure

Abstract

According to the shield tunneling machine main drive shifting type sealing structure, a plurality of outer sealing units are arranged between a shield tunneling machine main drive outer ring and an outer sealing runway, and each outer sealing unit comprises an outer lip-shaped sealing ring, a first outer sealing supporting ring and a second outer sealing supporting ring; the first outer sealing supporting ring and the second outer sealing supporting ring are located on the inner side and the outer side of the outer lip-shaped sealing ring correspondingly. An outer adjusting spacer ring is arranged on one side of at least one outer sealing unit, and the position of the outer adjusting spacer ring is adjusted according to the abrasion position of the outer sealing runway so that the outer adjusting spacer ring can avoid the abrasion position of the outer sealing runway. By adjusting the position of the outer adjusting spacer ring, the sealing position can be adjusted, so that the outer adjusting spacer ring can avoid the abrasion position on an outer sealing runway, the influence of runway abrasion on a sealing system is avoided, and meanwhile, the repeated utilization of the abraded runway is realized; the operation difficulty is lower, and the cost is lower.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing structure, concretely relates to a shield machine main drive displacement type sealing structure. BACKGROUND

[0002] The main drive sealing system is one of the most critical systems of the shield machine, and is a barrier for preventing the muck from entering and protecting the main bearing. In the construction process, the sealing runway is prone to wear at the contact position with the front two sealing lips, resulting in failure of the sealing system.

[0003] At present, for the wear phenomenon of the sealing runway in the construction process, the existing scheme is to adjust the sealing runway, replace the runway connecting bolt, manufacture new pads, adjust the front and rear positions of the runway, and make the sealing lip avoid the wear position of the runway. However, the adjustable range of this scheme is small, the operation in the hole is difficult, and there are problems such as the cost of new parts. In the equipment remanufacturing process, for the wear phenomenon of the sealing runway, the existing scheme is to replace the main drive runway or use the surfacing or laser cladding method for repair. However, the material cost and labor cost are high, the repair and manufacturing period is long, and the performance of the repaired runway is difficult to guarantee. SUMMARY

[0004] Therefore, the utility model provides a shield machine main drive displacement type sealing structure, which solves the problems of high difficulty and cost in the maintenance and modification of the prior art, and the performance of the repaired runway is difficult to guarantee.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a shield machine main drive displacement type sealing structure, comprising a shield machine main drive outer ring, wherein the inside of the shield machine main drive outer ring is provided with an outer sealing runway; a plurality of outer sealing units are arranged between the shield machine main drive outer ring and the outer sealing runway, wherein each outer sealing unit comprises an outer lip-shaped sealing ring, a first outer sealing support ring and a second outer sealing support ring, and the first outer sealing support ring and the second outer sealing support ring are respectively arranged on the inner side and the outer side of the outer lip-shaped sealing ring.

[0006] One side of at least one outer sealing unit is provided with an outer adjusting spacer ring, and the position of the outer adjusting spacer ring is adjusted according to the wear position of the outer sealing runway, so that the outer adjusting spacer ring avoids the wear position of the outer sealing runway.

[0007] As a preferred scheme of the shield machine main drive displacement type sealing structure, the number of outer adjusting spacer rings is two, and the two outer adjusting spacer rings are arranged between adjacent two outer sealing units.

[0008] As a preferred scheme of the shield machine main drive displacement type sealing structure, the number of outer adjusting spacer rings is two, and the two outer adjusting spacer rings are arranged side by side at the outermost side of all the outer sealing units.

[0009] As a preferred scheme of the shield machine main drive displacement type sealing structure, the number of the outer adjusting spacer rings is two, and the two outer adjusting spacer rings are arranged side by side at the innermost side of all the outer sealing units.

[0010] As a preferred scheme of the shield machine main drive displacement type sealing structure, the shield machine main drive inner ring and the driving disc are further included; the shield machine main drive inner ring is provided with an inner sealing track; a plurality of inner sealing units are arranged between the inner sealing track and the driving disc, and the inner sealing units include an inner lip-shaped sealing ring, a first inner sealing support ring and a second inner sealing support ring, and the first inner sealing support ring and the second inner sealing support ring are respectively arranged at the inner and outer sides of the inner lip-shaped sealing ring.

[0011] One side of at least one of the inner sealing units is provided with an inner adjusting spacer ring, and the position of the inner adjusting spacer ring is adjusted according to the wear position of the inner sealing track, so that the inner adjusting spacer ring avoids the wear position of the inner sealing track.

[0012] As a preferred scheme of the shield machine main drive displacement type sealing structure, the number of the inner adjusting spacer rings is two, and the two inner adjusting spacer rings are respectively arranged at intervals between the two adjacent inner sealing units.

[0013] As a preferred scheme of the shield machine main drive displacement type sealing structure, the number of the inner adjusting spacer rings is two, and the two inner adjusting spacer rings are arranged side by side at the outermost side of all the inner sealing units.

[0014] As a preferred scheme of the shield machine main drive displacement type sealing structure, the number of the inner adjusting spacer rings is two, and the two inner adjusting spacer rings are arranged side by side at the innermost side of all the inner sealing units.

[0015] The utility model has the following advantages: a plurality of outer sealing units are arranged between the outer sealing track and the outer ring of the main drive of the shield machine, the outer sealing unit comprises an outer lip-shaped sealing ring, a first outer sealing support ring and a second outer sealing support ring, the first outer sealing support ring and the second outer sealing support ring are respectively arranged on the inner side and the outer side of the outer lip-shaped sealing ring, one side of at least one outer sealing unit is provided with an outer adjusting spacer ring, the position of the outer adjusting spacer ring is adjusted according to the wear position of the outer sealing track, so that the outer adjusting spacer ring avoids the wear position of the outer sealing track. By adjusting the position of the outer adjusting spacer ring, the position of the sealing can be adjusted, so that the wear position on the outer sealing track is avoided, the influence of the wear of the track on the sealing system is avoided, and the repeated use of the worn track is realized; the sealing system can be restored at low cost, the sealing system is prevented from being invalid due to the wear of the track, and the main bearing is prevented from being damaged by the entry of the slag; in the remanufacturing process of the main drive, the sealing system is restored to the unworn state, and the repeated use of the worn track is realized, and in the construction process, compared with the adjustment of the sealing track in the hole, the operation difficulty is smaller, and the cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creating labor.

[0017] Figure 1 It is an outer sealing unit schematic view of the shield machine main drive displacement type sealing structure provided in the embodiments of the utility model;

[0018] Figure 2 It is an outer sealing unit sealing displacement schematic view of the shield machine main drive displacement type sealing structure provided in the embodiments of the utility model;

[0019] Figure 3 It is an inner and outer sealing unit schematic view of the shield machine main drive displacement type sealing structure provided in the embodiments of the utility model;

[0020] Figure 4 It is an inner sealing unit sealing displacement schematic view of the shield machine main drive displacement type sealing structure provided in the embodiments of the utility model;

[0021] Figure 5 It is an outer sealing unit structure schematic view when the adjusting spacer ring is located at the innermost side provided in the embodiments of the utility model;

[0022] Figure 6 It is a sealing displacement schematic view when the adjusting spacer ring is located at the innermost side provided in the embodiments of the utility model.

[0023] Figure 7 It is the inside sealing grease injection channel (inside sealing runway) schematic view of the shield machine main drive displacement type sealing structure provided in the embodiment of the utility model;

[0024] Figure 8 It is the outside sealing grease injection channel (grease ring) schematic view of the shield machine main drive displacement type sealing structure provided in the embodiment of the utility model.

[0025] In the drawing, 1, shield machine main drive outer ring;2, outside sealing runway;3, outside sealing unit;4, outside lip-shaped sealing ring;5, first outside sealing support ring;6, second outside sealing support ring;7, outside adjusting spacer ring;8, shield machine main drive inner ring;9, drive disc;10, inside sealing runway;11, inside sealing unit;12, inside lip-shaped sealing ring;13, first inside sealing support ring;14, second inside sealing support ring;15, inside adjusting spacer ring. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are explained by specific concrete embodiments below, the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification, obviously, the described embodiment is a part of the embodiment of the utility model, instead of all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0027] Referring to Figure 1 And Figure 2 The embodiment of the utility model provides a kind of shield machine main drive displacement type sealing structure, including shield machine main drive outer ring 1, shield machine main drive outer ring 1 inside is equipped with outside sealing runway 2;Shield machine main drive outer ring 1 and outside sealing runway 2 between being equipped with several outside sealing units 3, outside sealing unit 3 includes outside lip-shaped sealing ring 4, first outside sealing support ring 5 and second outside sealing support ring 6, first outside sealing support ring 5 and second outside sealing support ring 6 are respectively at the inside and outside of outside lip-shaped sealing ring 4;

[0028] Wherein, at least one outside sealing unit 3 side is equipped with an outside adjusting spacer ring 7, the position of outside adjusting spacer ring 7 is adjusted according to the wear position of outside sealing runway 2, so that outside adjusting spacer ring 7 avoids the wear position of outside sealing runway 2.

[0029] In the embodiment, the number of outside adjusting spacer ring 7 is two, and the two outside adjusting spacer rings 7 are respectively arranged between the adjacent two outside sealing units 3. According to the wear condition of outside sealing runway 2, the two outside adjusting spacer rings 7 can be arranged side by side at the outermost side of all outside sealing units 3, or the outside adjusting spacer ring 7 can be arranged side by side at the innermost side of all outside sealing units 3.

[0030] Specifically, initially, the two outer adjustment spacer rings 7 are respectively located between the adjacent first outer seal support ring 5 and the second outer seal support ring 6 of the different outer seal units 3; when the outer seal raceway 2 at the sealing lip position is worn and the position cannot be in contact with the seal after disassembly detection, the assembly order of the outer seal unit 3 can be changed.

[0031] Referring to Figure 2 , and further, when the outer seal raceway 2 at the sealing lip position is worn, the outer adjustment spacer ring 7 close to the outer side is adjusted to the outermost side of all the outer seal units 3 for assembly, thereby achieving the effect of adjusting the sealing position; if the outer seal raceway 2 is worn again after the change, another outer adjustment spacer ring 7 can be adjusted to the outermost side of all the outer seal units 3 for assembly, that is, at this time, the two outer adjustment spacer rings 7 are arranged side by side at the outermost side of all the outer seal units 3, thereby achieving the effect of continuing to adjust the sealing position.

[0032] After adjusting the sealing position, the contact position of the new sealing lip formed with the outer seal raceway 2 has no wear, thereby the sealing system can be restored to the initial perfect state.

[0033] Among them, the structure of the first outer seal support ring 5 and the second outer seal support ring 6 is suitable for the outer lip-shaped sealing ring 4 to fit, which is used to ensure the sealing effect. The first outer seal support ring 5, the second outer seal support ring 6 and the outer adjustment spacer ring 7 all use common sealing spacer ring materials.

[0034] Referring to Figure 3 and Figure 4 In a possible embodiment, it further includes a shield machine main drive inner ring 8 and a drive disc 9; the shield machine main drive inner ring 8 is provided with an inner seal raceway 10; a plurality of inner seal units 11 are arranged between the inner seal raceway 10 and the drive disc 9, the inner seal unit 11 includes an inner lip-shaped sealing ring 12, a first inner seal support ring 13 and a second inner seal support ring 14, the first inner seal support ring 13 and the second inner seal support ring 14 are respectively arranged on the inner and outer sides of the inner lip-shaped sealing ring 12; at least one side of the inner seal unit 11 is provided with an inner adjustment spacer ring 15, the position of the inner adjustment spacer ring 15 is adjusted according to the wear position of the inner seal raceway 10, so that the inner adjustment spacer ring 15 avoids the wear position of the inner seal raceway 10.

[0035] Among them, the number of inner adjustment spacer rings 15 is two, and the two inner adjustment spacer rings 15 are respectively arranged in the adjacent two inner seal units 11. According to the wear condition of the inner seal raceway 10, the two inner adjustment spacer rings 15 can be arranged side by side at the outermost side of all the inner seal units 11, or the inner adjustment spacer rings 15 can be arranged side by side at the innermost side of all the inner seal units 11.

[0036] Specifically, initially, the two inner adjustment spacer rings 15 are respectively located between the adjacent first inner seal support ring 13 and the second inner seal support ring 14 of different inner seal units 11; when the inner seal raceway 10 at the sealing lip position is worn and it is detected through disassembly that the position cannot be in sealing contact again, the assembly sequence of the inner seal unit 11 can be changed.

[0037] Referring to Figure 4 , and further, when the inner seal raceway 10 at the sealing lip position is worn, the inner adjustment spacer ring 15 close to the outer side is adjusted to the outermost side of all the inner seal units 11 for assembly, thereby achieving the effect of adjusting the sealing position; if the inner seal raceway 10 is worn again after the change, the other inner adjustment spacer ring 15 can be continuously adjusted to the outermost side of all the inner seal units 11 for assembly, that is, the two inner adjustment spacer rings 15 are arranged side by side at the outermost side of all the inner seal units 11, thereby achieving the effect of continuously adjusting the sealing position.

[0038] After adjusting the sealing position, the contact position of the new sealing lip formed with the inner seal raceway 10 has no wear, thereby the sealing system can be restored to the initial perfect state.

[0039] Among them, the structure of the first inner seal support ring 13 and the second inner seal support ring 14 is adapted to the inner lip-shaped sealing ring 12 for close fitting, for ensuring the sealing effect. The first inner seal support ring 13, the second inner seal support ring and the inner adjustment spacer ring 15 all adopt the commonly used sealing spacer ring material.

[0040] Referring to Figure 5 and Figure 6 In a possible embodiment, the number of outer adjustment spacer rings 7 is two, and the two outer adjustment spacer rings 7 are arranged side by side at the innermost side of all the outer seal units 3.

[0041] Specifically, initially, the outer adjustment spacer ring 7 can be designed to be located at the innermost side of all the outer seal units 3, when the outer seal raceway 2 at the sealing lip position is worn and it is detected through disassembly that the position cannot be in sealing contact again, the assembly sequence of the outer seal unit 3 can be changed, one of the outer adjustment spacer rings 7 at the innermost side is adjusted to the outermost side of all the outer seal units 3 for assembly, thereby achieving the effect of adjusting the sealing position; if the outer seal raceway 2 is worn again after the change, the outer adjustment spacer ring 7 at the innermost side can be continuously adjusted to the outermost side for assembly, thereby achieving the effect of continuously adjusting the sealing position.

[0042] Wherein, due to the difference in the grease injection form of the inner and outer seals, the inner seal unit 11 is injected through the grease hole in the inner seal track 10, and the outer seal unit 3 is injected through the outer grease ring and the seal support ring, so the initial position of the inner adjustment spacer ring 15 has no effect on the grease injection hole of the inner seal unit 11, but if the position of the outer adjustment spacer ring 7 is changed, the corresponding grease hole position and number need to be adjusted accordingly, for example, as shown in Figure 5 , at this time, the grease injection hole design of the outer seal unit 3 is more complex than Figure 1 .

[0043] Referring to Figure 7 and Figure 8 , in a possible embodiment, due to the difference in the grease injection form of the inner and outer seals, the inner seal unit 11 is injected through the grease hole in the inner seal track 10, and the outer seal unit 3 is injected through the outer grease ring and the seal support ring, with this scheme, the inner seal grease injection channel ( Figure 7 ) does not need to be improved compared with the prior art scheme, and the outer seal grease injection channel ( Figure 8 ) needs to optimize the grease injection channel of the chamber between the first seal and the second seal into a double-channel grease hole, so as to adapt to the change of the seal position and the change of the grease injection chamber position.

[0044] In conclusion, the utility model discloses the shield machine main drive outer ring 1 and the outer sealing track 2 between being equipped with a plurality of outer sealing units 3, and the outer sealing unit 3 includes outer lip-shaped sealing ring 4, first outer sealing support ring 5 and second outer sealing support ring 6, and first outer sealing support ring 5 and second outer sealing support ring 6 are respectively at the inside and outside of outer lip-shaped sealing ring 4, one side of at least one outer sealing unit 3 is equipped with an outer adjusting spacer ring 7, and the position of outer adjusting spacer ring 7 is adjusted according to the wear position of outer sealing track 2 to make outer adjusting spacer ring 7 avoid the wear position of outer sealing track 2. Initially, two outer adjusting spacer rings 7 are located between the adjacent first outer sealing support ring 5 and second outer sealing support ring 6 of different outer sealing units 3 respectively, when the outer sealing track 2 at the sealing lip position wears, and after disassembling and detecting that the position can not contact the seal again, the assembly sequence of outer sealing unit 3 can be changed. When the outer sealing track 2 at the sealing lip position wears, the outer adjusting spacer ring 7 close to the outer side is adjusted to the outermost side of all outer sealing units 3 to assemble, so that the sealing position is adjusted, if the outer sealing track 2 wears again after changing, another outer adjusting spacer ring 7 can be adjusted to the outermost side of all outer sealing units 3 to assemble, that is, the two outer adjusting spacer rings 7 are arranged side by side at the outermost side of all outer sealing units 3, so that the sealing position is continuously adjusted. When the sealing position is adjusted, the contact position of the new sealing lip and outer sealing track 2 has no wear, so that the sealing system efficiency can be restored to the initial perfect state. Initially, two inner adjusting spacer rings 15 are located between the adjacent first inner sealing support ring 13 and second inner sealing support ring 14 of different inner sealing units 11 respectively, when the inner sealing track 10 at the sealing lip position wears, and after disassembling and detecting that the position can not contact the seal again, the assembly sequence of inner sealing unit 11 can be changed. When the inner sealing track 10 at the sealing lip position wears, the inner adjusting spacer ring 15 close to the outer side is adjusted to the outermost side of all inner sealing units 11 to assemble, so that the sealing position is adjusted, if the inner sealing track 10 wears again after changing, another inner adjusting spacer ring 15 can be adjusted to the outermost side of all inner sealing units 11 to assemble, that is, the two inner adjusting spacer rings 15 are arranged side by side at the outermost side of all inner sealing units 11, so that the sealing position is continuously adjusted. When the sealing position is adjusted, the contact position of the new sealing lip and inner sealing track 10 has no wear, so that the sealing system efficiency can be restored to the initial perfect state.The utility model discloses a position of outer adjustment isolation ring 7 can be adjusted, can adjust the position of sealing, make it avoid the wear position on outer sealing runway 2, avoid the influence that runway wear causes sealing system, realize the repeated use of wear runway simultaneously, can realize the recovery of low -cost sealing system, avoid the sealing system failure caused by runway wear, and then lead to the main bearing of the residue such as entering the main bearing, lead to the damage of main bearing, realize the recovery of sealing system to the unworn state in the main drive remanufacturing process again, realize the repeated use of wear runway again, and in the construction process, compared with the hole inside adjustment sealing runway, its operation difficulty is smaller, and the cost is lower.

[0045] Although the utility model has been described in detail above with general description and specific embodiment, but on the basis of the utility model, some modifications or improvements can be made, which is obvious to the person skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model, all belong to the range of the utility model claimed.

Claims

1. A shield tunneling machine main drive displacement sealing structure, comprising a shield tunneling machine main drive outer ring (1), wherein an outer sealing runway (2) is provided inside the shield tunneling machine main drive outer ring (1); characterized in that, A plurality of outer sealing units (3) are provided between the main drive outer ring (1) of the tunnel boring machine and the outer sealing runway (2). The outer sealing unit (3) includes an outer lip seal ring (4), a first outer sealing support ring (5) and a second outer sealing support ring (6). The first outer sealing support ring (5) and the second outer sealing support ring (6) are respectively located on the inner and outer sides of the outer lip seal ring (4). At least one of the outer sealing units (3) is provided with an outer adjusting ring (7) on one side. The position of the outer adjusting ring (7) is adjusted according to the wear position of the outer sealing track (2) so that the outer adjusting ring (7) avoids the wear position of the outer sealing track (2).

2. The shield machine main drive shifting sealing structure according to claim 1, characterized in that, The number of the external adjustment spacer rings (7) is two, and the two external adjustment spacer rings (7) are arranged at intervals between the two adjacent external sealing units (3).

3. The shield machine main drive shifting sealing structure according to claim 1, characterized in that, The number of the outer adjustment spacer rings (7) is two, and the two outer adjustment spacer rings (7) are arranged side by side on the outermost side of all the outer sealing units (3).

4. The shield machine main drive shifting sealing structure according to claim 1, characterized in that, The number of the outer adjustment spacer rings (7) is two, and the two outer adjustment spacer rings (7) are arranged side by side on the innermost side of all the outer sealing units (3).

5. The shield machine main drive shifting sealing structure according to claim 1, characterized in that, It also includes a shield machine main drive inner ring (8) and a drive disk (9); the shield machine main drive inner ring (8) is provided with an inner sealing runway (10); a plurality of inner sealing units (11) are provided between the inner sealing runway (10) and the drive disk (9), the inner sealing unit (11) includes an inner lip seal ring (12), a first inner sealing support ring (13) and a second inner sealing support ring (14), the first inner sealing support ring (13) and the second inner sealing support ring (14) are respectively located on the inner and outer sides of the inner lip seal ring (12); At least one of the inner sealing units (11) is provided with an inner adjusting ring (15) on one side. The position of the inner adjusting ring (15) is adjusted according to the wear position of the inner sealing track (10) so that the inner adjusting ring (15) avoids the wear position of the inner sealing track (10).

6. The shield machine main drive shifting sealing structure according to claim 5, characterized in that, The number of the inner adjustment spacer rings (15) is two, and the two inner adjustment spacer rings (15) are arranged at intervals between the two adjacent inner sealing units (11).

7. The shield machine main drive shifting sealing structure according to claim 5, characterized in that, The number of inner adjusting spacers (15) is two, and the two inner adjusting spacers (15) are arranged side by side on the outermost side of all the inner sealing units (11).

8. The shield machine main drive shifting sealing structure according to claim 7, characterized in that, The number of inner adjusting spacers (15) is two, and the two inner adjusting spacers (15) are arranged side by side on the innermost side of all the inner sealing units (11).

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