CN110434546A - Shield machine bearing ring seal restorative procedure - Google Patents
Shield machine bearing ring seal restorative procedure Download PDFInfo
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- CN110434546A CN110434546A CN201910758948.6A CN201910758948A CN110434546A CN 110434546 A CN110434546 A CN 110434546A CN 201910758948 A CN201910758948 A CN 201910758948A CN 110434546 A CN110434546 A CN 110434546A
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- slip ring
- lip
- ring
- type packing
- seal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention discloses a kind of shield machine bearing ring seal restorative procedures, when leakproofness is unqualified between lip-type packing and slip ring, original seal joint beside the lip-type packing is changed to the seal joint of different in width, the lip of the lip-type packing is made to avoid the abrading section of slip ring；Alternatively, slip ring is axially moveable, the lip of lip-type packing is made to avoid the abrading section of slip ring when the abrasion again of slip ring leads to that leakproofness is unqualified between lip-type packing and slip ring.Present invention mixing maintains the leakproofness between slip ring and lip-type packing in such a way that adjustment seal joint and adjustment slip ring are mobile, it increases by adjusting the chance of leakproofness at slip ring is kept, in the case where not carrying out large repairs to slip ring, the duration of bearing ring seal can be extended as far as possible.The present invention has repaired the dent of slip ring by the ring set in slip ring outer peripheral surface suit Si Taili cobalt-base alloys material, and is conducive to enhance the abrasion resistance properties and sealing performance of slip ring outer peripheral surface.
Description
Technical field
The present invention relates to shield machines to maintain technical field, and in particular to a kind of shield machine bearing ring seal restorative procedure.
Background technique
After shield machine long working, the sealing between slip ring and lip-type packing can fail and cannot be again by adjustment
Slip ring mobile mode guarantees leakproofness.And slip ring is usually the steel loop of a diameter number meter, if carried out to entire slip ring
Replacement then higher cost, on the other hand, as slip ring, base bearing these components are all the components that shield machine customizes, it is difficult to find
Second product that can be substituted.
If sealing system fails between slip ring and lip-type packing, native slag can be traveled further into main bearing of shield machine
Portion, to cause the damage of the roller of base bearing, raceway and retainer, base bearing is the core component of shield machine, once damage
Bad consequence is very serious.
Fig. 1 is the partial sectional view of the main driving of certain shield machine in the prior art, and the main driving operation logic of shield machine is such as
Under: referring to Fig. 1, base bearing 112 is installed in main drive case 111, reduction gearbox is installed on the right side of main drive case 111
113, driving gear 114, the right end installation motor of reduction gearbox 113 or hydraulic horse are installed on the output shaft of 113 left end of reduction gearbox
It reaches；The inner ring of base bearing 112 is equipped with gear ring, and driving gear 114 is meshed with the gear ring, logical on the left of the inner ring of base bearing 112
It crosses and has been bolted annular flange 115, the cutterhead of shield machine is mounted on the annular flange 115, so as to drive cutterhead to rotate.
Since annular flange 115 needs to rotate, it is therefore desirable to consider between annular flange 115 and main drive case 111
Sealing problem.Existing sealing means are as follows: referring to fig. 2, Fig. 2 is the portion the A enlarged drawing of Fig. 1, is arranged cunning outside annular flange 115
Ring 116 is equipped with multiple tracks lip-type packing 117 between slip ring 116 and main drive case 111, when annular flange 115 rotates, lip
The lip of shape sealing ring 117 and the outer surface of slip ring 116 form sliding friction, while playing sealing function.
After shield machine works long hours, the outer surface that slip ring 116 is in contact with the lip of lip-type packing 117 can be worn out
The groove of annular, will affect the leakproofness between lip-type packing 117 and slip ring 116.In order to overcome lip-type packing 117 and slide
The reduction of sealability between ring 116, current mode are as follows: refering to Fig. 3, slip ring 116 passes through 28 of circumferentially uniform parts
High-strength bolt 1181 is fixed on annular flange 115, uniformly distributed 14 adjustment bolts between high-strength bolt 1181
1182, it is threadedly engaged between adjustment bolt 1182 and slip ring 116, and the right end of adjustment bolt 1182 is contradicted in annular flange 115
End face, after slip ring 116 is worn, by turn adjustment bolt 1182 by slip ring 116 relative to annular flange 115 to the left
It is mobile, so that the position that slip ring 116 is worn is avoided in lip-type packing 117.
Slip ring 116 is exactly constantly moved to the left by above-mentioned adjustment mode, the first reference line and the second reference line in Fig. 4
Spacing be the maximum distance (about 14mm) that can be moved to the left of slip ring 116, as shown in figure 4, when slip ring 116 is by left for the first time
After moving and moving to left for the second time (mobile about 5mm every time), due to being equipped with sealing gland 119 on the left of slip ring 116, and adjacent lip shape is close
Seal joint 1120 is equipped between seal 117, space occupied by three lip-type packings 117 is fixed, the sidesway to the left of slip ring 116
Need to take into account the lip-type packing 117 of the rightmost side and the cooperation of slip ring 116 when dynamic, slip ring 116 is difficult to move to left again.
Although the number that slip ring 116 moves to left can be increased by increasing the spacing of the first reference line and the second reference line,
But since the number that the limitation of shield machine size, slip ring 116 can move to left is eventually limited.
For these reasons, it is necessary to which providing one kind can guarantee that leakproofness is sustainable between slip ring and lip-type packing
Shield machine bearing ring seal restorative procedure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of shield machine bearing ring seal restorative procedures, solve in the prior art
Leakproofness duration short technical problem between the slip ring and lip-type packing of shield machine.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
Design a kind of shield machine bearing ring seal restorative procedure, comprising:
Adjustment seal joint: when the abrasion due to slip ring leads to that leakproofness is unqualified between lip-type packing and the slip ring,
Original seal joint beside the lip-type packing is changed to the seal joint of different in width, and/or in the lip-type packing
Side increases new seal joint, and the lip of the lip-type packing is made to avoid the abrading section of the slip ring；It is mobile to adjust slip ring:
When the abrasion again of slip ring leads to that leakproofness is unqualified between lip-type packing and the slip ring, the slip ring is moved along axial
It is dynamic, so that the lip of the lip-type packing is avoided the abrading section of the slip ring；Mixing is slided using adjustment seal joint and adjustment
Ring mobile mode repairs the sealing between slip ring and lip-type packing.
Preferably, further include slip ring maintenance: the slip ring being dismantled, the wear in the slip ring outer surface processes ring
Connected in star carries out sealing weld using welding wire in the annular groove, makes the weldering that the full welding wire material is welded in the annular groove
Material, then polishes to the solder, and the outer peripheral surface of the outer peripheral surface and the slip ring that make the solder in the annular groove is flat
Together.
Preferably, the material of the welding wire is identical as the material of the slip ring.
Preferably, the solder in the annular groove is higher by 1~3mm than the outer peripheral surface of the slip ring, and to described
Before solder in annular groove is polished, the slip ring that sealing weld has solder is first stood into a period of time to eliminate stress.
Preferably, polishing is being carried out to the solder and then by 0.05~0.15mm of outer peripheral surface continuous grinding of slip ring.
Preferably, further include slip ring maintenance: the slip ring is dismantled, match on the slip ring with the lip-type packing
The outer circumference surface of conjunction is processed, and making the outer circumference surface of the slip ring, circumferentially equal thickness goes to expect；
Using Si Taili cobalt-base alloys processing ring set identical with the annular space size that the slip ring goes to material part to be formed, by institute
Ring set is stated to be fixed on the slip ring, make the ring set substitute the slip ring go material part, the surface of the ring set is as institute
State the face that slip ring is matched with the lip-type packing.
Preferably, the ring set is mounted on the slip ring using hot charging mode, and the ring set and the slip ring it
Between be interference fitted.
The beneficial technical effect of the present invention lies in:
1. present invention mixing maintains between slip ring and lip-type packing in such a way that adjustment seal joint and adjustment slip ring are mobile
Leakproofness, increase that the chance of leakproofness can in the case where not carrying out large repairs to slip ring by adjusting keeping at slip ring
Extend the duration of bearing ring seal as far as possible.
2. the present invention is conducive to solder to combine closely with slip ring to be one by processing annular groove sealing weld at slip ring dent
Body, slip ring of the outer peripheral surface after polishing can be used as new slip ring and use.
3. the present invention has repaired the recessed of slip ring by the ring set in slip ring outer peripheral surface suit Si Taili cobalt-base alloys material
Trace, and be conducive to enhance the abrasion resistance properties and sealing performance of slip ring outer peripheral surface.
4. the present invention extends the service life of this component for being difficult to substitute of slip ring by repairing to slip ring.
Detailed description of the invention
Fig. 1 is the partial sectional view of shield owner driving；
Fig. 2 is the portion the A enlarged drawing of Fig. 1；
Fig. 3 is the slip ring of shield machine and the assembling schematic diagram of annular flange；
Fig. 4 is the adjustment schematic diagram of shield machine slip ring in the prior art；
Fig. 5 is the schematic diagram that seal joint and slip ring are alternately adjusted in the embodiment of the present invention 1；
Fig. 6 is the partial sectional view that the slip ring of solder is welded in 2 further groove of the embodiment of the present invention；
Fig. 7 is the portion the A enlarged drawing of Fig. 6；
Fig. 8 be 2 further groove of the embodiment of the present invention in solder polish after slip ring partial sectional view；
Fig. 9 is the portion the B enlarged drawing of Fig. 8；
Figure 10 is the flow chart repaired in the embodiment of the present invention 3 to slip ring.
In figure, each label signal are as follows: main drive case 111, base bearing 112, reduction gearbox 113, driving gear 114, annular
Flange 115, slip ring 116, annular groove 1161, solder 1162, annular space 1163, ring set 1164, lip-type packing 117, height
Strength bolts 1181, adjustment bolt 1182, sealing gland 119, seal joint 1120, the first lip-type packing 211, the second lip shape
The former seal joint 222, first of sealing ring 212, second former seal joint 221, the first novel sealing pressure ring 231, the second novel sealing pressure
Ring 232, third novel sealing pressure ring 233, circles mark 241, triangle mark 242, diamond indicia 243.
Specific embodiment
Illustrate a specific embodiment of the invention with reference to the accompanying drawings and examples, but following embodiment is used only in detail
It describes the bright present invention in detail, does not limit the scope of the invention in any way.
Embodiment 1:
A kind of shield machine bearing ring seal restorative procedure, please refers to Fig. 5.
Shield machine bearing ring seal restorative procedure provided in an embodiment of the present invention is mixed into using following two maintenance mode
Row, to increase the number for being adjusted maintenance to bearing ring seal, both adjustment modes are respectively as follows:
Mode one:
Adjustment seal joint: when the abrasion due to slip ring leads to that leakproofness is unqualified between lip-type packing and slip ring, by this
Original seal joint beside lip-type packing is changed to the seal joint of different in width, or increases beside the lip-type packing
Add new seal joint, the lip of the lip-type packing is made to avoid the abrading section of slip ring.
The concrete mode that seal joint is adjusted in the present embodiment is as follows:
The top indicates positional relationship when lip-type packing, seal joint, slip ring 116 and sealing gland 119 most start in Fig. 5
And matching relationship, at this point, being equipped with the first former seal joint between the first lip-type packing 211 and the second lip-type packing 212
221, the second former seal joint 222 is equipped between the second lip-type packing 212 and third lip-type packing 213.
The position that the lip that circles mark 241 in figure represents each lip-type packing matches when most starting with slip ring 116.
After shield machine tunnels a period of time, the outer peripheral surface of slip ring 116 and the first lip-type packing 211, the second lip-type packing 212 and
The position (at circles mark 241) that third lip-type packing 213 matches can wear one of dent out, lead to seal failure, need
Sealing at slip ring is repaired.
After the middle section of Fig. 5 indicates adjusted seal joint, lip-type packing, seal joint, slip ring 116 and sealing pressure
Positional relationship and matching relationship between lid 119, at this point, the first novel sealing pressure ring is arranged on the left of the first lip-type packing 211
231, the first former seal joint 221 is retained between the first lip-type packing 211 and the second lip-type packing 212, the second lip shape is close
Second novel sealing pressure ring 232 is set between seal 212 and third lip-type packing 213, and on 213 right side of third lip-type packing
Third novel sealing pressure ring 233 is set.
Triangle mark 242 in figure represents the lip and 116 phase of slip ring of each lip-type packing after adjusted seal joint
The position of contact, it is seen then that triangle mark 242 has been staggered with circles mark 241, that is, the lip of each lip-type packing
Avoid the abrading section of 116 first time of slip ring.
The spacing of third reference line and the 4th reference line indicates the beam overall of each lip-type packing and seal joint, through toning
After whole seal joint, the beam overall of each lip-type packing, former seal joint and novel sealing pressure ring be consistent originally, otherwise lip
Shape sealing ring can be displaced and influence leakproofness.
Mode two:
Adjustment slip ring is mobile: when the abrasion again of slip ring leads to that leakproofness is unqualified between lip-type packing and slip ring, will slide
Ring is axially moveable, and the lip of lip-type packing is made to avoid the abrading section of slip ring.
It is as follows that the mobile concrete mode of slip ring is adjusted in the present embodiment:
After once adjusting seal joint, as shield machine continues to tunnel, the outer peripheral surface of slip ring 116 and the first lip packing
The position (at triangle mark 242) that the 211, second lip-type packing 212 of circle and third lip-type packing 213 match can also be ground
One of dent is damaged out, seal failure is caused, needs to repair the sealing at slip ring again.
After bottom indicates that adjusted slip ring is mobile in Fig. 5, lip-type packing, seal joint, slip ring 116 and sealing gland
Positional relationship and matching relationship between 119, at this point, each lip-type packing and seal joint do not change, only by slip ring 116
It is moved to the left (about 5mm).
After diamond indicia 243 in figure represents adjusted slip ring movement, the lip of each lip-type packing connects with slip ring 116
The position of touching, it is seen then that diamond indicia 243 has been staggered with triangle mark 242 and circles mark 241, that is, each lip
The lip of shape sealing ring avoids the abrading section before slip ring 116 twice.
After adjusting by both the above mode, solve the sealing problem of slip ring, and at this time slip ring there remains after
The continuous space being moved to the left, that is, if sealing problem of slip ring and lip-type packing occurs again, can again by slip ring to
Move left and be adjusted, or adjust seal joint again, therefore, this method increase by adjusting mode repair slip ring with
The chance sealed between lip-type packing is conducive to keep the lasting seals at slip ring.
Above two maintenance mode sequence, mixing can use adjustment seal joint and adjust the mobile side of slip ring in no particular order
Formula repairs the sealing between slip ring and lip-type packing, reaches the chance for increasing adjustment number.
Generally after tunneling 2~3Km, the sealing between lip-type packing and slip ring starts to fail shield machine, if can be more
The chance adjusted several times can significantly extend the distance of shield machine driving, meet the construction demand of most engineerings, avoid
It shuts down the construction midway of shield machine.And above two maintenance mode is simpler, it is time-consuming to reduce maintenance, reduces to construction speed
It influences.
Embodiment 2:
A kind of shield machine bearing ring seal restorative procedure, please refers to Fig. 6 to Fig. 9.
Although being increased adjustable by mixing using the sealing at two kinds of adjustment mode maintenance slip rings in embodiment 1
Number extends the duration of bearing ring seal, but the damage of slip ring is not repaired after all, it is also not possible to all the time by tune
Whole mode keeps leakproofness, and shield machine also needs task again.
Therefore, on the basis of embodiment 1, after shield machine is appeared, the present embodiment is by carrying out the dent on slip ring
Maintenance continues the duration for extending bearing ring seal.
The mode that the present embodiment repairs slip ring is as follows:
As shown in Figure 6 and Figure 7, after slip ring 116 being dismantled from shield machine, wear is equal at the three of the outer surface of slip ring 116
Annular groove 1161 is processed, wear here is annular detent, annular groove 1161 width 15mm, deep 4mm；Using welding wire
Sealing weld is carried out in annular groove 1161, makes to weld the solder 1162 for being fully welded silk material matter, annular groove 1161 in annular groove 1161
In solder 1162 be higher by 2mm than the outer peripheral surface of slip ring.
By processing regular annular groove 1161 on 116 surface of slip ring, then sealing weld solder 1162 again, is conducive to weld
It is combined into one between material 1162 and slip ring 116.
Here welding wire material is identical as the material of slip ring 116, therefore, before reparation, first judges the material of slip ring 116,
Judgment mode: with wear surface hardness inside and outside hardness tester test slip ring 116, such as it is lower than 20HRC, then 116 surface free of slip ring heat
Processing, material should be ZGT310 or less cast steel；If 116 surface hardness of slip ring shows that it have passed through table in 20HRC or more
The heat treatment of face flame, material should be the cast steel of ZGT310~450.
As shown in Figure 8 and Figure 9, it for the slip ring 116 after the completion of sealing weld, is first stood for a period of time to eliminate stress,
Then turnery processing is carried out than the part that the outer peripheral surface of slip ring 116 is higher by solder 1162 using vertical lathe, makes solder 1162
Mill amount 0.2mm is reserved than the part that the outer peripheral surface of slip ring 116 is higher by；Then the 0.2mm surplus is ground off with grinding head, keeps annular recessed
The outer peripheral surface of solder in slot and the outer peripheral surface of slip ring are concordant；Finally by the outer peripheral surface continuous grinding 0.1mm of slip ring 116, after polishing
Slip ring outer peripheral surface flatness is 1.6.
The outer peripheral surface of slip ring after the present embodiment processing maintenance eliminates dent, and the intensity of outer peripheral surface, smooth
Degree can satisfy seal request.
Embodiment 3:
A kind of shield machine bearing ring seal restorative procedure, please refers to Figure 10.
Compared with Example 2, the mode of another modification slip ring is present embodiments provided.
The mode that the present embodiment repairs slip ring is as follows:
The variation diagram of its longitudinal section in repair process of slip ring 116 is shown in Figure 10, as shown in Figure 10, by slip ring 116 from
After dismantling on shield machine, the outer circumference surface matched on slip ring 116 with lip-type packing is processed, makes the outer of slip ring 116
Circumferentially equal thickness goes material to form annular space 1163 to periphery, and the nominal thickness of annular space 1163 is 20mm；
Using Si Taili cobalt-base alloys processing ring set identical with 1163 size of annular space that slip ring 116 goes to material part to be formed
1164, the nominal thickness of ring set 1164 is 20mm, and ring set is fixed on slip ring, so that ring set 1164 is substituted slip ring 116 and goes to expect
Part, the face that the surface of ring set 1164 is matched as slip ring 116 with lip-type packing.
The internal diameter of ring set 1164 is slightly less than the outer diameter of 116 machining area of slip ring, makes interference between ring set 1164 and slip ring 116
Cooperation to being locked ring set 1164 on the outer peripheral surface of slip ring 116, and prevents ring set 1164 from taking off in later period operation process
It falls.
It since ring set 1164 and slip ring 116 are rigid member, and is interference fit, it is difficult to directly be sleeved on ring set 1164
On slip ring 116, therefore, ring set 1164 is mounted on slip ring 116 using hot charging mode in the present embodiment, hot charging mode is as follows:
It selects air to flow lesser region as hot charging place, slip ring 116 is preheated to 20~30 DEG C, use heating gun by 4~6 people
Multipoint Uniform heats ring set 1164, pays attention to being no more than 200 DEG C to the heating temperature of ring set 1164, otherwise ring set 1164 may be sent out
Change shape；After to be heated, since ring set 1164 is relatively thin, it is easy loss of heat, so needing that ring set 1164 is sleeved on slip ring 116 immediately
On, movement wants fast and accurate；It finally checks whether ring set 1164 is installed in place, checks whether deposit between ring set 1164 and slip ring 116
In gap, it is desirable that ring set 1164, which must not fit closely to have the gap with 116 ring of slip ring, just calculates hot charging success.
The ring set 1164 of Si Taili cobalt-base alloys material has good resistance to sliding abrasiveness and seizure resistance, coefficient of friction
It is lower, it is very suitable for being in contact to form sealing with lip-type packing.
The present invention is described in detail above in conjunction with drawings and examples, still, those of skill in the art
Member is it is understood that without departing from the purpose of the present invention, can also carry out each design parameter in above-described embodiment
Change, forms multiple specific embodiments, is common variation range of the invention, is no longer described in detail one by one herein.
Claims (7)
1. a kind of shield machine bearing ring seal restorative procedure characterized by comprising
Adjustment seal joint: when the abrasion due to slip ring leads to that leakproofness is unqualified between lip-type packing and the slip ring,
Original seal joint beside the lip-type packing is changed to the seal joint of different in width, and/or in the lip-type packing
Side increases new seal joint, and the lip of the lip-type packing is made to avoid the abrading section of the slip ring；
Adjustment slip ring is mobile: when the abrasion again of slip ring leads to that leakproofness is unqualified between lip-type packing and the slip ring,
The slip ring is axially moveable, the lip of the lip-type packing is made to avoid the abrading section of the slip ring；
Mixing repairs the sealing between slip ring and lip-type packing in such a way that adjustment seal joint and adjustment slip ring are mobile.
2. shield machine bearing ring seal restorative procedure according to claim 1, which is characterized in that further include,
Slip ring maintenance: the slip ring is dismantled, the wear in the slip ring outer surface processes annular groove, is existed using welding wire
Sealing weld is carried out in the annular groove, makes the solder that the full welding wire material is welded in the annular groove, then to the solder
It polishes, keeps the outer peripheral surface of the solder in the annular groove concordant with the outer peripheral surface of the slip ring.
3. shield machine bearing ring seal restorative procedure according to claim 2, which is characterized in that the material of the welding wire and institute
The material for stating slip ring is identical.
4. shield machine bearing ring seal restorative procedure according to claim 2, which is characterized in that the weldering in the annular groove
Expect that the outer peripheral surface than the slip ring is higher by 1~3mm, and before polishing the solder in the annular groove, first will
Sealing weld has the slip ring of solder to stand a period of time to eliminate stress.
5. shield machine bearing ring seal restorative procedure according to claim 2, which is characterized in that beaten to the solder
Mill and then by 0.05~0.15mm of outer peripheral surface continuous grinding of slip ring.
6. shield machine bearing ring seal restorative procedure according to claim 1, which is characterized in that further include,
Slip ring maintenance: the slip ring is dismantled, and is carried out to the outer circumference surface matched on the slip ring with the lip-type packing
Processing, making the outer circumference surface of the slip ring, circumferentially equal thickness goes to expect；
Using Si Taili cobalt-base alloys processing ring set identical with the annular space size that the slip ring goes to material part to be formed, by institute
Ring set is stated to be fixed on the slip ring, make the ring set substitute the slip ring go material part, the surface of the ring set is as institute
State the face that slip ring is matched with the lip-type packing.
7. shield machine bearing ring seal restorative procedure according to claim 6, which is characterized in that will be described using hot charging mode
Ring set is mounted on the slip ring, and is interference fitted between the ring set and the slip ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758948.6A CN110434546B (en) | 2019-08-16 | 2019-08-16 | Shield tunneling machine slip ring sealing repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758948.6A CN110434546B (en) | 2019-08-16 | 2019-08-16 | Shield tunneling machine slip ring sealing repair method |
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| Publication Number | Publication Date |
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| CN110434546A true CN110434546A (en) | 2019-11-12 |
| CN110434546B CN110434546B (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910758948.6A Active CN110434546B (en) | 2019-08-16 | 2019-08-16 | Shield tunneling machine slip ring sealing repair method |
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| CN113375926A (en) * | 2021-08-16 | 2021-09-10 | 湖南大学 | Wear monitoring system based on micro-pressure detection technology |
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| Publication number | Publication date |
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| CN110434546B (en) | 2021-04-20 |
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