CN220668372U - Main bearing sealing assembly of heading machine - Google Patents
Main bearing sealing assembly of heading machine Download PDFInfo
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- CN220668372U CN220668372U CN202322199964.0U CN202322199964U CN220668372U CN 220668372 U CN220668372 U CN 220668372U CN 202322199964 U CN202322199964 U CN 202322199964U CN 220668372 U CN220668372 U CN 220668372U
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- end cover
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 185
- 230000006835 compression Effects 0.000 claims abstract description 58
- 238000007906 compression Methods 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000004519 grease Substances 0.000 claims description 42
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 43
- 239000002245 particle Substances 0.000 description 9
- 239000004576 sand Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000010410 layer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- Sealing Of Bearings (AREA)
Abstract
A heading machine main bearing seal assembly comprising: the device comprises an outer end cover, an inner end cover, a compression ring, a plurality of sealing rings, a plurality of isolating rings, an oil seal ring and a support ring; the outer end cover, the inner end cover, the compression ring, the plurality of sealing rings, the plurality of isolating rings, the oil seal ring and the supporting ring are sequentially arranged from the outer side of the main bearing to the inner side of the main bearing, the inner end cover is fixed on the inner ring of the main bearing, the outer end cover and the compression ring are fixed on the outer ring of the main bearing, the outer edge of the inner end cover is arranged between the outer end cover and the inner edge of the compression ring and is in rotary fit with the outer end cover and the compression ring, the outer limiting ring is fixedly arranged on the inner edge of the inner end face of the outer ring of the main bearing, and the plurality of sealing rings, the plurality of isolating rings, the oil seal ring and the supporting ring are sequentially arranged from the outer side of the main bearing to the inner side of the main bearing between the inner edge of the inner end face of the compression ring and the outer limiting ring. This design not only can prevent through the sealed clearance that the grit granule passes through multilayer labyrinth seal structure, can detect whether seal structure inefficacy through observing the detection hole fast moreover.
Description
Technical Field
The utility model relates to a sealing assembly, in particular to a main bearing sealing assembly of a development machine, which is particularly suitable for the main bearing sealing assembly of the development machine, which has a multi-layer labyrinth sealing structure and good sealing effect and can be used for rapidly detecting whether the sealing structure fails or not.
Background
The pumped storage power station is also called energy storage hydropower station, which uses redundant electric energy to pump water in a lower reservoir to an upper reservoir when the medium power load is low, and discharges the water to the hydropower station for power generation in the lower reservoir in the peak period of the power load.
The upper reservoir and the lower reservoir of the pumped storage power station are communicated through a pumped storage tunnel, the pumped storage tunnel is usually deeply hidden in a mountain, the pumped storage tunnel is a core area of the power station, excavation and supporting of a cavity and a channel are the most difficult parts in construction of the pumped storage power station, the traditional manual drilling and blasting method construction is gradually replaced by the TBM (full face heading machine) method at present, the safety and the entity quality of engineering can be greatly improved, the engineering period can be shortened, the mechanical changing and automatic efficiency improvement are realized, and the method is an important measure for implementing the new development concept, the coordination, the greenness, the openness and the sharing.
In the process of tunneling and rock breaking of a pumped storage tunnel by using the TBM, a large amount of dust and fine sand particles can be generated, if the sand particles enter the TBM main bearing, damage can be caused to internal parts of the main bearing, so that the TBM cannot work normally, in order to prevent the sand particles from entering the TBM, a sealing device is required to be installed on the TBM, and the existing sealing device is usually a labyrinth sealing ring sleeved on a TBM main shaft or the main bearing inner ring, and the sand particles are reduced to enter a sealing gap through a labyrinth sealing structure.
While this device can reduce the ingress of sand particles into the seal gap to some extent, it still suffers from the following drawbacks:
1. the existing labyrinth sealing structure only has single-layer labyrinth sealing, is simple in structure, has poor sealing effect on sand particles, and cannot prevent liquid impurities such as slurry from entering the main bearing or the gear box.
2. Because TBM main shaft or main bearing inner race need with main bearing outer race rotary fit, inevitably there is the clearance in the sealing device, can't avoid grit granule to get into the sealing gap, can accelerate the wearing and tearing of sealing washer after grit granule gets into the sealing gap, lead to sealing device to become invalid, because the operator can't directly observe sealing device, be difficult to in time discover sealing device to become invalid.
The disclosure of this background section is only intended to increase the understanding of the general background of the application and should not be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The utility model aims to overcome the defects that a single-layer labyrinth seal structure in the prior art is poor in sealing effect and failure of a sealing device is difficult to discover in time, and provides the main bearing seal assembly of the heading machine, which has a multi-layer labyrinth seal structure and good sealing effect and can be used for rapidly detecting whether the sealing structure fails.
In order to achieve the above object, the technical solution of the present utility model is:
a heading machine main bearing seal assembly, the seal assembly comprising: the device comprises an outer end cover, an inner end cover, a compression ring, a plurality of sealing rings, a plurality of isolating rings, an oil seal ring and a support ring; the outer end cover, the inner end cover, the compression ring, the plurality of sealing rings, the plurality of isolating rings, the oil seal ring and the support ring are all arranged between the main bearing inner ring and the main bearing outer ring, the outer end cover, the inner end cover, the compression ring, the plurality of sealing rings, the oil seal ring and the support ring are sequentially arranged from the outer side of the main bearing to the inner side of the main bearing, the inner end cover, the outer end cover and the compression ring are of mutually matched annular structures, the outer edge of the inner end surface of the outer end cover is fixedly connected with the outer edge of the outer end surface of the compression ring, the outer edge of the inner end surface of the outer end cover is in sealing fit with the outer edge of the outer end surface of the compression ring, the inner edge of the inner end surface of the inner end cover is fixedly connected with the outer end surface of the main bearing inner end ring, the outer edge of the inner end cover is arranged between the outer end cover and the inner edge of the compression ring, the inner end cover is in rotary fit with the main bearing, the inner edge of the inner end surface of the main bearing is fixedly arranged with an outer limiting ring, the inner end surface of the main bearing is fixedly arranged with an inner end surface of the main bearing is fixedly arranged between the outer end surface of the main bearing and the main bearing ring is sequentially arranged between the inner end cover and the outer end surface of the main bearing and the plurality of the main bearing ring is fixedly connected with the outer end surface of the main bearing.
The inner end cover comprises an I-shaped ring and a mounting ring, wherein an inner groove and an outer groove are respectively formed in the inner end face and the outer end face of the I-shaped ring, the mounting ring is fixedly arranged on the inner wall of the I-shaped ring, the end face of the mounting ring close to the inner side of the main bearing and the middle section of the I-shaped ring are arranged in the same plane, and the mounting ring is fixedly connected with the outer end face of the inner ring of the main bearing.
The compression ring is of an annular structure with a double groove on one side end face, the double groove is formed in the end face, close to the outer side of the main bearing, of the compression ring, two groove bodies of the double groove are separated through an intermediate wall in the middle of the double groove, the intermediate wall of the double groove is in insertion fit with the inner groove, the two groove bodies of the double groove are in insertion fit with two side walls of the inner groove, and the double groove is in rotary fit with the end face, close to the inner side of the main bearing, of the I-shaped ring.
The middle part of the inner end face of the outer end cover is provided with a first convex ring, the first convex ring is in insertion fit with the outer groove, and the first convex ring is in rotary fit with the outer groove.
The sealing assembly comprises two sealing rings and two isolating rings, the two sealing rings are identical in structure, the two isolating rings are a first isolating ring and a second isolating ring respectively, the first isolating ring is arranged between the two sealing rings, the second isolating ring is arranged between the sealing rings and the oil seal ring, two sides of the first isolating ring are respectively matched with opposite side limiting positions of the two sealing rings, and two sides of the second isolating ring are respectively matched with opposite side limiting positions of the sealing rings and the oil seal ring.
The bearing is characterized in that a first grease hole is formed in the compression ring, a second grease hole and a detection hole are formed in the outer ring of the main bearing, the second grease hole is formed between the two sealing rings, the detection hole is formed between the sealing ring and the oil sealing ring which are close to the inner side of the main bearing, and two ends of the first grease hole, the second grease hole and the detection hole are respectively communicated with the inner wall and the outer wall of the outer ring of the main bearing.
The isolating ring is provided with through holes corresponding to the second grease holes and the detection holes, the side wall of the supporting ring near the outer side of the main bearing is in limit fit with the side wall of the oil seal ring near the inner side of the main bearing, the side wall of the supporting ring near the inner side of the main bearing is in limit fit with the outer limit ring, the outer edges of the sealing ring and the oil seal ring are in seal fit with the main bearing outer ring, and the inner edges of the sealing ring and the oil seal ring are in seal fit with the main bearing inner ring.
And the gaps among the outer end cover, the inner end cover and the compression ring jointly form a labyrinth seal cavity, and the labyrinth seal cavity is communicated with the outer wall of the main bearing outer ring through a first grease hole.
The main bearing inner ring, the two sealing rings, the two isolating rings, the oil sealing ring and the supporting ring form an auxiliary sealing cavity together, and the auxiliary sealing cavity is communicated with the outer wall of the main bearing outer ring through the second grease hole, the detection hole and the corresponding through hole.
The sealing rings and the oil sealing rings are Y-shaped sealing rings, sealing lips of the sealing rings are arranged towards the outer side of the main bearing, and sealing lips of the oil sealing rings are arranged towards the inner side of the main bearing.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the main bearing sealing assembly of the heading machine, the outer edge of the inner end face of the outer end cover is fixedly connected with the outer edge of the outer end face of the compression ring, the outer edge of the inner end face of the outer end cover is in sealing fit with the outer edge of the outer end face of the compression ring, the outer edge of the inner end face of the inner end cover is fixedly connected with the outer end face of the main bearing inner ring, the outer edge of the inner end cover is arranged between the outer end cover and the inner edge of the compression ring, when the main bearing sealing assembly is used, the outer end cover and the compression ring move along with the main bearing outer ring, the inner end cover is in rotary fit with the outer end cover and the compression ring, one side of the inner end cover and the outer end cover form labyrinth sealing, the other side of the inner end cover and the compression ring form labyrinth sealing, and double-layer labyrinth sealing can effectively prevent sand particles from entering between the main bearing inner ring and the main bearing outer ring through a sealing gap. Therefore, the double-layer labyrinth seal can be formed through the cooperation of the inner end cover, the outer end cover and the compression ring, and the sealing effect of the sealing assembly is effectively improved.
2. According to the main bearing sealing assembly of the heading machine, the plurality of sealing rings, the plurality of isolating rings, the oil sealing rings and the supporting rings are all arranged between the main bearing inner ring and the main bearing outer ring, two sides of each isolating ring are respectively in limit fit with the corresponding sealing rings on the corresponding sides of each isolating ring, the side walls of the supporting rings are in limit fit with the oil sealing rings, so that the sealing rings and the oil sealing rings are fixed between the main bearing inner ring and the main bearing outer ring, the outer edges of the sealing rings and the oil sealing rings are in seal fit with the main bearing outer ring, the inner edges of the sealing rings and the oil sealing rings are in seal fit with the main bearing inner ring, and an auxiliary sealing cavity is formed by the main bearing inner ring, the two sealing rings, the two isolating rings, the oil sealing rings and the supporting rings together and is of a labyrinth sealing structure, and the auxiliary sealing cavity can further improve the sealing effect of the sealing assembly. Therefore, the sealing effect of the sealing assembly can be further improved through the auxiliary sealing cavity, and the service life of the device is effectively prolonged.
3. According to the main bearing sealing assembly of the heading machine, the first grease hole is formed in the compression ring, the second grease hole and the detection hole are formed in the outer ring of the main bearing, the second grease hole is formed between the two sealing rings, the detection hole is formed between the sealing rings near the inner side of the main bearing, the sealing lips are arranged towards the outer side of the main bearing, the sealing lips of the oil sealing rings are arranged towards the inner side of the main bearing, grease is injected into the auxiliary sealing cavity through the first grease hole and the second grease hole when the main bearing is used, the grease can block the entering of external sand particles on one hand, and can lubricate the sealing rings on the other hand, so that the abrasion speed of the sealing rings is reduced, an operator can quickly detect whether the sealing structure is invalid or not through observing the detection hole, when the grease or sand particles appear in the detection hole, the two sealing rings are proved to be invalid, and when gear oil appears in the detection hole, the oil sealing ring is proved to be invalid. Therefore, the design can quickly detect whether the sealing structure fails by observing the detection hole.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic view of the outer end cap of fig. 1.
Fig. 3 is a schematic view of the inner end cap of fig. 1.
Fig. 4 is a schematic view of the compression ring of fig. 1.
In the figure: the main bearing inner ring 1, the inner limit ring 11, the labyrinth seal chamber 12, the main bearing outer ring 2, the outer limit ring 21, the second grease hole 22, the detection hole 23, the outer end cover 3, the first convex ring 31, the inner end cover 4, the I-shaped ring 41, the mounting ring 42, the groove 43, the inner groove 43, the outer groove 44, the compression ring 5, the double groove 51, the first grease hole 52, the seal ring 6, the auxiliary seal chamber 61, the isolation ring 7, the first isolation ring 71, the second isolation ring 72, the through hole 73, the oil seal ring 8 and the support ring 9.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 4, a main bearing seal assembly for a heading machine, the seal assembly comprising: an outer end cover 3, an inner end cover 4, a compression ring 5, a plurality of sealing rings 6, a plurality of isolating rings 7, an oil sealing ring 8 and a supporting ring 9; the outer end cover 3, the inner end cover 4, the compression ring 5, the plurality of sealing rings 6, the plurality of isolating rings 7, the oil seal ring 8 and the supporting ring 9 are all arranged between the main bearing inner ring 1 and the main bearing outer ring 2, the outer end cover 3, the inner end cover 4, the compression ring 5, the plurality of sealing rings 6, the plurality of isolating rings 7, the oil seal ring 8 and the supporting ring 9 are sequentially arranged from the outer side of the main bearing to the inner side of the main bearing, the inner end cover 4, the outer end cover 3 and the compression ring 5 are of mutually matched annular structures, the outer edge of the inner end surface of the outer end cover 3 is fixedly connected with the outer edge of the outer end surface of the compression ring 5, the outer edge of the inner end surface of the outer end cover 3 is in sealing fit with the outer edge of the outer end surface of the compression ring 5, the inner edge of the inner end surface of the inner end cover 4 is fixedly connected with the outer end surface of the main bearing inner ring 1, the outer edge of the inner end cover 4 is arranged between the inner edge of the outer end cover 3 and the compression ring 5, the inner end cover 4 is in rotating fit with the outer end cover 3 and the outer end surface of the compression ring 5, the inner end surface of the inner end cover 2 is provided with a plurality of limiting rings 21 and the inner end surface of the inner end cover 1 and the inner end surface of the main bearing inner end cover 2 is sequentially fixedly arranged between the inner end cover 1 and the outer end cover 7 and the outer end surface of the main bearing outer end cover 2 is provided with the outer end surface of the inner end cover 1.
The inner end cover 4 comprises an I-shaped ring 41 and a mounting ring 42, an inner groove 43 and an outer groove 44 are respectively formed in the inner end face and the outer end face of the I-shaped ring 41, the mounting ring 42 is fixedly arranged on the inner wall of the I-shaped ring 41, the end face of the mounting ring 42 near the inner side of the main bearing is arranged in the same plane with the middle section of the I-shaped ring 41, and the mounting ring 42 is fixedly connected with the outer end face of the main bearing inner ring 1.
The compression ring 5 is an annular structure with a double groove 51 at one side end face, the double groove 51 is arranged on the end face of the compression ring 5 near the outer side of the main bearing, two groove bodies of the double groove 51 are separated through an intermediate wall in the middle of the double groove, the intermediate wall of the double groove 51 is in insertion fit with the inner groove 43, the two groove bodies of the double groove 51 are in insertion fit with two side walls of the inner groove 43, and the double groove 51 is in rotary fit with the end face of the I-shaped ring 41 near the inner side of the main bearing.
The middle part of the inner end surface of the outer end cover 3 is provided with a first convex ring 31, the first convex ring 31 is in insertion fit with the outer groove 44, and the first convex ring 31 is in rotary fit with the outer groove 44.
The sealing assembly comprises two sealing rings 6 and two isolating rings 7, the two sealing rings 6 are identical in structure, the two isolating rings 7 are a first isolating ring 71 and a second isolating ring 72 respectively, the first isolating ring 71 is arranged between the two sealing rings 6, the second isolating ring 72 is arranged between the sealing rings 6 and the oil sealing ring 8, two sides of the first isolating ring 71 are matched with opposite side limiting positions of the two sealing rings 6 respectively, and two sides of the second isolating ring 72 are matched with opposite side limiting positions of the sealing rings 6 and the oil sealing ring 8 respectively.
The compression ring 5 is provided with a first grease hole 52, the main bearing outer ring 2 is provided with a second grease hole 22 and a detection hole 23, the second grease hole 22 is arranged between the two sealing rings 6, the detection hole 23 is arranged between the sealing ring 6 near the inner side of the main bearing and the oil sealing ring 8, and two ends of the first grease hole 52, the second grease hole 22 and the detection hole 23 are respectively communicated with the inner wall and the outer wall of the main bearing outer ring 2.
The isolating ring 7 is provided with a through hole 73 corresponding to the second grease hole 22 and the detection hole 23, the side wall of the supporting ring 9 near the outer side of the main bearing is in limit fit with the side wall of the supporting ring 8 near the inner side of the main bearing, the side wall of the supporting ring 9 near the inner side of the main bearing is in limit fit with the outer limit ring 21, the outer edges of the sealing ring 6 and the oil seal ring 8 are in seal fit with the main bearing outer ring 2, and the inner edges of the sealing ring 6 and the oil seal ring 8 are in seal fit with the main bearing inner ring 1.
The clearances among the outer end cover 3, the inner end cover 4 and the compression ring 5 jointly form a labyrinth seal cavity 12, and the labyrinth seal cavity 12 is communicated with the outer wall of the main bearing outer ring 2 through a first grease hole 52.
The main bearing inner ring 1, the two sealing rings 6, the two isolating rings 7, the oil sealing ring 8 and the supporting ring 9 together form an auxiliary sealing cavity 61, and the auxiliary sealing cavity is communicated with the outer wall of the main bearing outer ring 2 through the second grease hole 22, the detection hole 23 and the corresponding through hole 73.
The sealing rings 6 and the oil sealing rings 8 are Y-shaped sealing rings, sealing lips of the sealing rings 6 are arranged towards the outer side of the main bearing, and sealing lips of the oil sealing rings 8 are arranged towards the inner side of the main bearing.
The principle of the utility model is explained as follows:
TBM is an abbreviation of Tunnel Boring Machine in this design and refers to full face hard rock tunnel boring machine.
Example 1:
a heading machine main bearing seal assembly, the seal assembly comprising: an outer end cover 3, an inner end cover 4, a compression ring 5, a plurality of sealing rings 6, a plurality of isolating rings 7, an oil sealing ring 8 and a supporting ring 9; the outer end cover 3, the inner end cover 4, the compression ring 5, the plurality of sealing rings 6, the plurality of isolating rings 7, the oil seal ring 8 and the supporting ring 9 are all arranged between the main bearing inner ring 1 and the main bearing outer ring 2, the outer end cover 3, the inner end cover 4, the compression ring 5, the plurality of sealing rings 6, the plurality of isolating rings 7, the oil seal ring 8 and the supporting ring 9 are sequentially arranged from the outer side of the main bearing to the inner side of the main bearing, the inner end cover 4, the outer end cover 3 and the compression ring 5 are of mutually matched annular structures, the outer edge of the inner end surface of the outer end cover 3 is fixedly connected with the outer edge of the outer end surface of the compression ring 5, the outer edge of the inner end surface of the outer end cover 3 is fixedly connected with the outer end surface of the main bearing outer ring 2, the inner edge of the inner end surface of the inner end cover 4 is fixedly connected with the outer end surface of the main bearing inner ring 1, the outer edge of the inner end cover 4 is arranged between the inner edge of the outer end cover 3 and the main bearing 5, the inner end cover 4 is rotatably matched with the outer end cover 3 and the compression ring 5, the inner end surface of the inner end cover 2 is provided with a plurality of limiting rings 21 and the inner end surface of the inner end cover 1 is fixedly arranged between the inner end cover and the inner end surface of the main bearing outer end cover 2 and the inner end cover 7 is fixedly arranged between the inner end cover and the outer end cover 1 and the outer end cover 7 is fixedly arranged with the inner end surface of the inner end cover 1; the inner end cover 4 comprises an I-shaped ring 41 and a mounting ring 42, wherein an inner groove 43 and an outer groove 44 are respectively formed in the inner end surface and the outer end surface of the I-shaped ring 41, the mounting ring 42 is fixedly arranged on the inner wall of the I-shaped ring 41, the end surface of the mounting ring 42 near the inner side of the main bearing is arranged in the same plane with the middle section surface of the I-shaped ring 41, and the mounting ring 42 is fixedly connected with the outer end surface of the main bearing inner ring 1; the compression ring 5 is of an annular structure with a double groove 51 at one side end surface, the double groove 51 is arranged on the end surface of the compression ring 5 near the outer side of the main bearing, two groove bodies of the double groove 51 are separated by an intermediate wall in the middle of the double groove 51, the intermediate wall of the double groove 51 is in insertion fit with the inner groove 43, the two groove bodies of the double groove 51 are in insertion fit with the two side walls of the inner groove 43, and the double groove 51 is in rotary fit with the end surface of the I-shaped ring 41 near the inner side of the main bearing; a first convex ring 31 is arranged in the middle of the inner end surface of the outer end cover 3, the first convex ring 31 is in insertion fit with the outer groove 44, and the first convex ring 31 is in rotary fit with the outer groove 44; the sealing assembly comprises two sealing rings 6 and two isolating rings 7, the two sealing rings 6 have the same structure, the two isolating rings 7 are a first isolating ring 71 and a second isolating ring 72 respectively, the first isolating ring 71 is arranged between the two sealing rings 6, the second isolating ring 72 is arranged between the sealing rings 6 and the oil sealing ring 8, two sides of the first isolating ring 71 are respectively matched with opposite side limits of the two sealing rings 6, and two sides of the second isolating ring 72 are respectively matched with opposite side limits of the sealing rings 6 and the oil sealing ring 8; the compression ring 5 is provided with a first grease hole 52, the main bearing outer ring 2 is provided with a second grease hole 22 and a detection hole 23, the second grease hole 22 is arranged between the two sealing rings 6, the detection hole 23 is arranged between the sealing ring 6 near the inner side of the main bearing and the oil sealing ring 8, and two ends of the first grease hole 52, the second grease hole 22 and the detection hole 23 are respectively communicated with the inner wall and the outer wall of the main bearing outer ring 2.
Example 2:
example 2 is substantially the same as example 1 except that:
the isolating ring 7 is provided with a through hole 73 corresponding to the second grease hole 22 and the detection hole 23, the side wall of the supporting ring 9 near the outer side of the main bearing is in limit fit with the side wall of the supporting ring 8 near the inner side of the main bearing, the side wall of the supporting ring 9 near the inner side of the main bearing is in limit fit with the outer limit ring 21, the outer edges of the sealing ring 6 and the oil seal ring 8 are in seal fit with the main bearing outer ring 2, and the inner edges of the sealing ring 6 and the oil seal ring 8 are in seal fit with the main bearing inner ring 1; the clearances among the outer end cover 3, the inner end cover 4 and the compression ring 5 jointly form a labyrinth seal cavity 12, and the labyrinth seal cavity 12 is communicated with the outer wall of the main bearing outer ring 2 through a first grease hole 52; the main bearing inner ring 1, the two sealing rings 6, the two isolating rings 7, the oil sealing ring 8 and the supporting ring 9 together form an auxiliary sealing cavity 61, and the auxiliary sealing cavity is communicated with the outer wall of the main bearing outer ring 2 through the second grease hole 22, the detection hole 23 and the corresponding through hole 73.
Example 3:
example 3 is substantially the same as example 2 except that:
the sealing rings 6 and the oil sealing rings 8 are Y-shaped sealing rings, sealing lips of the sealing rings 6 are arranged towards the outer side of the main bearing, and sealing lips of the oil sealing rings 8 are arranged towards the inner side of the main bearing.
The above description is merely of preferred embodiments of the present utility model, and the scope of the present utility model is not limited to the above embodiments, but all equivalent modifications or variations according to the present disclosure will be within the scope of the claims.
Claims (10)
1. The main bearing of the heading machine comprises a main bearing inner ring (1) and a main bearing outer ring (2), and is characterized in that:
the seal assembly includes: an outer end cover (3), an inner end cover (4), a compression ring (5), a plurality of sealing rings (6), a plurality of isolating rings (7), an oil sealing ring (8) and a supporting ring (9);
the outer end cover (3), the inner end cover (4), the compression ring (5), the plurality of sealing rings (6), the plurality of isolating rings (7), the oil seal ring (8) and the supporting ring (9) are all arranged between the main bearing inner ring (1) and the main bearing outer ring (2), the outer end cover (3), the inner end cover (4), the compression ring (5), the plurality of sealing rings (6), the plurality of isolating rings (7), the oil seal ring (8) and the supporting ring (9) are sequentially arranged from the outer side of the main bearing to the inner side of the main bearing, the inner end cover (4), the outer end cover (3) and the compression ring (5) are of mutually matched annular structures, the outer edge of the inner end surface of the outer end cover (3) is fixedly connected with the outer edge of the outer end surface of the main bearing outer ring (5), the outer edge of the inner end surface of the inner end cover (5) is fixedly connected with the outer end surface of the main bearing outer ring (2), the inner end cover (4) and the outer end cover (1) are fixedly connected with the outer edge of the inner end cover (3) and the outer end cover (5), the inner end cover (4) and the outer end cover (5) are fixedly connected with the outer end cover (5), an outer limit ring (21) is fixedly arranged on the inner edge of the inner end face of the main bearing outer ring (2), an inner limit ring (11) is fixedly arranged on the outer edge of the inner end face of the main bearing inner ring (1), and a plurality of seal rings (6), a plurality of isolating rings (7), oil seal rings (8) and support rings (9) are sequentially arranged between the inner edge of the inner end face of the compression ring (5) and the outer limit ring (21) from the outer side of the main bearing to the inner side of the main bearing.
2. A heading machine main bearing seal assembly as defined in claim 1 wherein:
the inner end cover (4) comprises an I-shaped ring (41) and a mounting ring (42), an inner groove (43) and an outer groove (44) are respectively formed in the inner end face and the outer end face of the I-shaped ring (41), the mounting ring (42) is fixedly arranged on the inner wall of the I-shaped ring (41), the end face, close to the inner side of the main bearing, of the mounting ring (42) is arranged in the same plane with the middle section of the I-shaped ring (41), and the mounting ring (42) is fixedly connected with the outer end face of the main bearing inner ring (1).
3. A heading machine main bearing seal assembly as defined in claim 2 wherein:
the compression ring (5) is of an annular structure with a double groove (51) at one side end face, the double groove (51) is arranged on the end face, close to the outer side of the main bearing, of the compression ring (5), two groove bodies of the double groove (51) are separated through an intermediate wall in the middle of the double groove, the intermediate wall of the double groove (51) is in insertion fit with the inner groove (43), the two groove bodies of the double groove (51) are in insertion fit with the two side walls of the inner groove (43), and the double groove (51) is in rotary fit with the end face, close to the inner side of the main bearing, of the I-shaped ring (41).
4. A heading machine main bearing seal assembly as defined in claim 3 wherein:
the middle part of the inner end face of the outer end cover (3) is provided with a first convex ring (31), the first convex ring (31) is in insertion fit with the outer groove (44), and the first convex ring (31) is in rotary fit with the outer groove (44).
5. A heading machine main bearing seal assembly as defined in claim 4 wherein:
the sealing assembly comprises two sealing rings (6) and two isolating rings (7), the two sealing rings (6) are identical in structure, the two isolating rings (7) are a first isolating ring (71) and a second isolating ring (72) respectively, the first isolating ring (71) is arranged between the two sealing rings (6), the second isolating ring (72) is arranged between the sealing rings (6) and the oil sealing ring (8), two sides of the first isolating ring (71) are matched with opposite side limiting positions of the two sealing rings (6) respectively, and two sides of the second isolating ring (72) are matched with opposite side limiting positions of the sealing rings (6) and the oil sealing ring (8) respectively.
6. A heading machine main bearing seal assembly as defined in any one of claims 1 to 5 wherein:
the bearing is characterized in that a first grease hole (52) is formed in the compression ring (5), a second grease hole (22) and a detection hole (23) are formed in the outer ring (2) of the main bearing, the second grease hole (22) is formed between the two sealing rings (6), the detection hole (23) is formed between the sealing ring (6) close to the inner side of the main bearing and the oil seal ring (8), and the two ends of the first grease hole (52), the second grease hole (22) and the detection hole (23) are respectively communicated with the inner wall and the outer wall of the outer ring (2) of the main bearing.
7. A heading machine main bearing seal assembly as defined in claim 6 wherein:
through holes (73) corresponding to the second grease holes (22) and the detection holes (23) are formed in the isolation ring (7), the side wall of the support ring (9) close to the outer side of the main bearing is in limit fit with the side wall of the support ring (8) close to the inner side of the main bearing, the side wall of the support ring (9) close to the inner side of the main bearing is in limit fit with the outer limit ring (21), the outer edges of the seal ring (6) and the oil seal ring (8) are in seal fit with the main bearing outer ring (2), and the inner edges of the seal ring (6) and the oil seal ring (8) are in seal fit with the main bearing inner ring (1).
8. A heading machine main bearing seal assembly as defined in claim 7 wherein:
the labyrinth seal cavity (12) is formed by gaps among the outer end cover (3), the inner end cover (4) and the compression ring (5), and the labyrinth seal cavity (12) is communicated with the outer wall of the main bearing outer ring (2) through a first grease hole (52).
9. A heading machine main bearing seal assembly as defined in claim 8 wherein:
the main bearing inner ring (1) and the two sealing rings (6), the two isolating rings (7), the oil sealing ring (8) and the supporting ring (9) form an auxiliary sealing cavity (61) together, and the auxiliary sealing cavity is communicated with the outer wall of the main bearing outer ring (2) through the second grease hole (22), the detection hole (23) and the corresponding through hole (73).
10. A heading machine main bearing seal assembly as defined in claim 9 wherein:
the sealing rings (6) and the oil sealing rings (8) are Y-shaped sealing rings, sealing lips of the sealing rings (6) are arranged towards the outer side of the main bearing, and sealing lips of the oil sealing rings (8) are arranged towards the inner side of the main bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322199964.0U CN220668372U (en) | 2023-08-16 | 2023-08-16 | Main bearing sealing assembly of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322199964.0U CN220668372U (en) | 2023-08-16 | 2023-08-16 | Main bearing sealing assembly of heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220668372U true CN220668372U (en) | 2024-03-26 |
Family
ID=90334007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322199964.0U Active CN220668372U (en) | 2023-08-16 | 2023-08-16 | Main bearing sealing assembly of heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220668372U (en) |
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2023
- 2023-08-16 CN CN202322199964.0U patent/CN220668372U/en active Active
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