CN104132140B - A kind of rolling support formula seal arrangement of rectangular shield push-bench relay well - Google Patents
A kind of rolling support formula seal arrangement of rectangular shield push-bench relay well Download PDFInfo
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- CN104132140B CN104132140B CN201410338959.6A CN201410338959A CN104132140B CN 104132140 B CN104132140 B CN 104132140B CN 201410338959 A CN201410338959 A CN 201410338959A CN 104132140 B CN104132140 B CN 104132140B
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Abstract
A rolling support formula seal arrangement for rectangular shield push-bench relay well, comprises wheel device and adjustable seal arrangement; Described wheel device and adjustable seal arrangement are all positioned on the tread of front case afterbody, and wheel device and adjustable seal arrangement are separately fixed at the both sides of the baffle plate in rear case; Described wheel device comprises external sliding rail, the sealing of shield shape, mandrel, interior sliding beam, stop capping and puller bolt, supporting wheel is arranged on interior sliding beam by mandrel, interior sliding beam is encircled by external sliding rail, be fixed with stop capping above external sliding rail, puller bolt through stop capping internal thread and be close to the top of interior sliding beam.Wheel device of the present invention is relative with front case afterbody rolls, effectively can ensure the gap of front case afterbody and foundation ring, thus ensure that the sealing of shield shape is stablized with front case tail compression amount, extend the working life of shield shape sealing, improve the degree of fitting of jacking direction and tunnel axis, improve jacking efficiency.
Description
Technical field
The present invention relates to tunnel piercing technical field, be specifically related to a kind of rolling support formula seal arrangement that can be applicable to the shield structure push-bench relay well of rectangle excavated section.
Background technique
Along with China's sustain economic stably increases, the further quickening of urbanization process, the demand of the underground utility of China is also increasing year by year.In addition people are to the enhancing of environmental protection consciousness, and pipe-jacking technology will play more and more consequence and effect in the construction of China's underground utility.
Under the support of China's economy rapid growth, the development of pipe-jacking technology has welcome unprecedented opportunities, and the construction of the under ground piping in future city, storm sewer, blow-off line, power pipe and common pipe trench is by extensive use pipe-jacking technology.The feature that rectangular cross section tunnel has space availability ratio high relative to circular cross section tunnel, and rectangular cross section jacking length becomes more and more longer along with the raising that construction requires.Exceed promote mainly the allowing after the ultimate pressure that top power or tube coupling are allowed or active well by soil body limit reaction thrust of device when namely jacking resistance tunnels surface friction drag sum around frontal resistance and tube wall, cannot once meet the requirements of jacking distance, now, adopt relaying relay jacking technology, carrying out carrying out step by step makes the top power of every segment pipe be reduced in permission jacking range of resistance, thus makes jacking length by the restriction of aforementioned three factors.
Relaying Relay Technique is one of rectangular shield push-bench key function, the quality, working life, reliability etc. of relay well sealing effect directly have influence on the drivage efficiency in whole tunnel, infiltrations a large amount of when will cause tunnel construction time serious, thus bring potential safety hazard.At present, the relay well of most push-bench is all made up of twice slipper seal, and the life-span of relay well depends on the suffered decrement of the quality of sealing processing, the roughness of surface of contact and sealing completely.The difficulty of construction of rectangular shield push-bench is larger, if the sealing technique of directly using existing push-bench can not reach good sealing effect.Current existing relay well scheme major part is two seals cast formula, namely the built-in two seals of twice groove on foundation ring, when front case and rear case produce relative sliding, two seals contacts with front case afterbody tread respectively in theory, in fact because tube coupling deadweight is very large, it is often foundation ring tread contact therewith, cause tread roughness in relative sliding impaired and two seals is serious by substantial load extruding, thus the working lipe of the seal arrangement of relay well and performance are badly damaged.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of rolling support formula seal arrangement of rectangular shield push-bench relay well, the wheel device of this device is relative with front case afterbody rolls, effectively can ensure the gap of front case afterbody and foundation ring, thus ensure that the sealing of shield shape is stablized with front case tail compression amount, extend the working life of shield shape sealing, improve the degree of fitting of jacking direction and tunnel axis, improve jacking efficiency.
In order to achieve the above object, the present invention adopts following technological scheme: a kind of rolling support formula seal arrangement of rectangular shield push-bench, comprises wheel device and adjustable seal arrangement; Described wheel device and adjustable seal arrangement are all positioned on the tread of front case afterbody, and wheel device and adjustable seal arrangement are separately fixed at the both sides of the baffle plate in rear case; Described wheel device comprises external sliding rail, the sealing of shield shape, mandrel, interior sliding beam, stop capping and puller bolt, supporting wheel is arranged on interior sliding beam by mandrel, interior sliding beam is encircled by external sliding rail, be fixed with stop capping above external sliding rail, puller bolt through stop capping internal thread and be close to the top of interior sliding beam.
The external sliding rail of described wheel device is fixed on the baffle plate of rear case, the external diameter of supporting wheel and the tread of front case afterbody tangent, supporting wheel can roll on the tread of front case afterbody; Interior sliding beam and external sliding rail can be driven to produce upper and lower relative sliding by regulating puller bolt.
Described adjustable seal arrangement comprises foundation ring, the sealing of shield shape, dust ring and pressure ring; Foundation ring to be fixed on baffle plate and to be positioned on the upside of the afterbody of front case; Foundation ring is respectively equipped with two trapezoidal grooves and two rectangular recess, two trapezoidal grooves are positioned at the both sides of foundation ring bottom, and two trapezoidal grooves are parallel, and two rectangular recess are positioned at the centre of foundation ring; Be provided with the sealing of shield shape and pressure ring in each rectangular recess of foundation ring, pressure ring is positioned at shield shape sealing top and seals with shield shape to be close to; In each trapezoidal groove of foundation ring, dust ring is installed.
Interior threaded hole is provided with above the rectangular recess of described foundation ring, the interior threaded hole that trimming bolt with nut passes foundation ring top is deep in rectangular recess, pressure ring is fixed on the end shaft shoulder of trimming bolt by pad by fixing bolt, and trimming bolt and pressure ring, set screw form hinging structure.
The tread of described foundation ring and front case afterbody has gap.
Shield shape sealing top in described rectangular recess is provided with several pressure rings, drives pressure ring to regulate shield shape to seal the rate of tension with the tread of front case afterbody by regulating trimming bolt.
The external diameter of the external diameter of described supporting wheel, the external diameter of dust ring, the sealing of shield shape is all tangent with the tread of front case afterbody; When front case and rear case produce relative sliding, supporting wheel can produce relative rolling with the tread of front case afterbody.
Be provided with axle sleeve between the wheel shaft of described supporting wheel and mandrel, the external diameter edge of supporting wheel is provided with the rubber of high strength.
The horizontal section of described front case and rear case is rectangle, and adjustable seal arrangement is with the rectangular continuous distributed of tread of front case afterbody, and wheel device intermittently distributes several along front case afterbody tread.
The present invention uses wheel device carrying from the deadweight of tube coupling, supporting wheel external diameter, dust ring external diameter and shield shape seal outer diameter all tangent with the tread of front case afterbody, effectively can ensure the gap of front case afterbody and foundation ring, ensure that the sealing contracting amount of shield shape sealing slightly changes, the performance that shield shape is sealed is stablized and is extended the working life of shield shape sealing, supporting wheel is equipped with high-strength rubber along external diameter edge simultaneously, the wearing and tearing of tread are reduced when the tread of supporting wheel and front case afterbody rolls, in addition several pressure rings further increase the safety and reliability of shield shape sealing use and the degree of fitting of jacking direction and tunnel axis, improve jacking efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is the structural representation of adjustable seal arrangement of the present invention.
Embodiment
The present invention is illustrated below in conjunction with drawings and Examples.
A rolling support formula seal arrangement for rectangular shield push-bench relay well, as shown in Figure 1, comprises wheel device 5 and adjustable seal arrangement 2.Wheel device 5 and adjustable seal arrangement 2 are all positioned on the tread of front case 1 afterbody, and wheel device 5 and adjustable seal arrangement 2 are separately fixed at the both sides of the baffle plate 603 in rear case 6.
Wheel device 5 comprises external sliding rail 601, shield shape sealing 201, mandrel 502, interior sliding beam 506, stop capping 507 and puller bolt 510, as shown in Figure 2.Wheel device 5 is fixed on the baffle plate 603 of rear case 6 by external sliding rail 601.Be provided with axle sleeve 503 between the wheel shaft of supporting wheel 501 and mandrel 502, axle sleeve 503 plays location, left and right and protection mandrel 502.The wheel shaft of supporting wheel 501, axle sleeve 503 are fixedly mounted on interior sliding beam 506 together with mandrel 502 three with bolt 505 by clamp 504.Interior sliding beam 506 is encircled by external sliding rail 601, and namely, sliding beam 506 is in the inside that external sliding rail 601 forms space, and has space between interior sliding beam 506 and external sliding rail 601.Stop capping 507 is fixed on external sliding rail 601 by bolt 505, and puller bolt 510 passes the internal thread of stop capping 507 and is close to interior sliding beam 506, is provided with high nut 509 between puller bolt 510 and stop capping 507.Seamless connectivity between the top of interior sliding beam 506 and stop capping 507.The external diameter edge of supporting wheel 501 is provided with the rubber of high strength, the external diameter of supporting wheel 501 and the tread of front case 1 afterbody tangent, when front case 1 and rear case 6 produce relative sliding, supporting wheel 501 can produce with the tread of front case 1 afterbody and roll.During use, interior sliding beam 506 is driven to produce upper and lower relative sliding with external sliding rail 601 by regulating puller bolt 510.
Adjustable seal arrangement 2 comprises foundation ring 602, shield shape sealing 201, dust ring 202 and pressure ring 203, as shown in Figure 3.Adjustable seal arrangement 2 is fixed on the baffle plate 603 of rear case 6 by foundation ring 602, and foundation ring 602 and external sliding rail 601 are separately fixed at the both sides of baffle plate 603.Foundation ring 602 has gap with the tread of front case 1 afterbody.Foundation ring 602 is respectively equipped with two trapezoidal grooves and two rectangular recess.Two trapezoidal grooves are positioned at the both sides of foundation ring 602 bottom, and two trapezoidal grooves are parallel.Dust ring 202 is installed in each trapezoidal groove.Two rectangular recess are positioned at the centre of foundation ring 602, are provided with shield shape sealing 201 and pressure ring 203 in each rectangular recess, and pressure ring 203 is positioned at shield shape and seals 201 tops and seal 201 with shield shape and be close to, and the quantity of pressure ring 203 has several.Be provided with interior threaded hole above the rectangular recess of foundation ring 602, the trimming bolt 206 with nut 207 passes the interior threaded hole on foundation ring 602 top, and pressure ring 203 is fixed on the end shaft shoulder of trimming bolt 206 by pad 205 by fixing bolt 204.Trimming bolt 206 and pressure ring 203, set screw 204 form hinging structure.The external diameter of dust ring 202, the external diameter of shield shape sealing 201 are all tangent with the tread of front case afterbody 1.
The external diameter of the external diameter of supporting wheel 501, the external diameter of dust ring 202, shield shape sealing 201 is all tangent with the tread of front case 1 afterbody, and namely the bottom of the bottom of supporting wheel 501, dust ring 202, shield shape seal the bottom of 201 on the same line.When front case 1 produces relative sliding with rear case 6, supporting wheel 501 can produce relative rolling with the tread of front case 1 afterbody.By regulating trimming bolt 206 to drive pressure ring 203, thus regulate the rate of tension of the tread of shield shape sealing 201 and front case 1 afterbody.
Installation process
The installation of wheel device 5: be first installed on supporting wheel 501 by axle sleeve 503, then puts into supporting wheel 501 in the middle of sliding beam 506 and also penetrates with mandrel 502, then be fixed on interior sliding beam 506 with clamp 504 and bolt 505 by mandrel 502; Then the supporting wheel 501 assembled and interior sliding beam 506 are imported in external sliding rail 601 from above, and with stop capping 507 and bolt 505, interior sliding beam 506 is enclosed in external sliding rail 601, finally puller bolt 510 be screwed into and pass high nut 509 and to have in internal thread in sliding beam 506, and puller bolt 510 need not contact with interior sliding beam 506 top, namely, sliding beam 506 is relaxed state.
The installation of adjustable seal arrangement 2: first nut 207 is screwed into trimming bolt 206, then the interior threaded hole of trimming bolt 206 through foundation ring 602 is deep in rectangular recess, and trimming bolt 206 end shaft shoulder plane is not higher than the upper surface of rectangular recess; Several pressure rings 203 are loaded in the rectangular recess of foundation ring 602 one by one, set screw 204 and pad 205 is used to locate pressure ring 203, pressure ring 203 is fixed on the end shaft shoulder of trimming bolt 206, and trimming bolt 206 and pressure ring 203, set screw 204 form hinging structure; Then along foundation ring 602 circumference, shield shape sealing 201 and dust ring 202 are installed.
During overall package, the horizontal section of front case 1 and rear case 6 is rectangle, and adjustable seal arrangement 2 is with the rectangular continuous distributed of tread of front case 1 afterbody, and wheel device 5 intermittently distributes several along the tread of front case 1 afterbody; First pipe bending cylinder 3 and attached lock ring bar are loaded in front case 1, one end of pipe bending cylinder 3 and the baffle plate of front case 1 are close to; Rear case 6 is slowly pushed in the rectangular ring of front case 1 afterbody, the tread of the external diameter of wheel device 5 and front case 1 afterbody is close to, until the other end of pipe bending cylinder 3 and rear case baffle plate is foremost close to, and shield shape sealing 201, dust ring 202 contacts with the tread of front case 1 afterbody but is not extruded; Regulate puller bolt 510 that its end is contacted with interior sliding beam 506 top, interior sliding beam 506 produces upper and lower relative sliding with external sliding rail 601, thus makes the tread of front case 1 afterbody equal with the gap of foundation ring 602 rectangular profile everywhere; Be close to and have certain decrement by regulating trimming bolt 206 to drive pressure ring 202 to force shield shape to seal 201 with the tread of front case 1 afterbody, until meet the seal request of relay well again; Finally installation slip casting one-way valve 4 is loaded in rear case 6.
Working procedure: when pipe bending cylinder 3 stretches, front case 1 extends with pipe bending cylinder 3 and moves forward, and now wheel device 5, with front case 1 afterbody, relative rolling occurs, the tread relative sliding of shield shape sealing 201 and front case 1 afterbody.Shield shape sealing 201 and the tread close contact of front case 1 afterbody, thus produce good sealing effect, dust ring 202 stops dregs from tube coupling outside or inside or dust.Otherwise when pipe bending cylinder 3 bounces back, there is relative rolling with front case 1 afterbody in wheel device 5, the tread relative sliding of shield shape sealing 201 and front case 1 afterbody.Shield shape sealing 201 and the tread close contact of front case 1 afterbody, thus produce good sealing effect, dust ring 202 stops dregs from tube coupling outside or inside or dust.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (9)
1. a rolling support formula seal arrangement for rectangular shield push-bench relay well, is characterized in that, comprises wheel device (5) and adjustable seal arrangement (2); Described wheel device (5) and adjustable seal arrangement (2) are all positioned on the tread of front case (1) afterbody, and wheel device (5) and adjustable seal arrangement (2) are separately fixed at the both sides of the baffle plate (603) in rear case (6); Described wheel device (5) comprises external sliding rail (601), supporting wheel (501), mandrel (502), interior sliding beam (506), stop capping (507) and puller bolt (510), supporting wheel (501) is arranged on interior sliding beam (506) by mandrel (502), interior sliding beam (506) is encircled by external sliding rail (601), external sliding rail (601) is above fixed with stop capping (507), puller bolt (510) through stop capping (507) internal thread and be close to the top of interior sliding beam (506).
2. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 1, is characterized in that: the external sliding rail (601) of described wheel device (5) is fixed on the baffle plate (603) of rear case (6); The external diameter of supporting wheel (501) and the tread of front case (1) afterbody tangent, supporting wheel (501) can roll on the tread of front case (1) afterbody; Interior sliding beam (506) and external sliding rail (601) can be driven to produce upper and lower relative sliding by regulating puller bolt (510).
3. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 1, is characterized in that: described adjustable seal arrangement (2) comprises foundation ring (602), shield shape sealing (201), dust ring (202) and pressure ring (203); Foundation ring (602) is fixed on baffle plate (603) and goes up and be positioned on the upside of the tread of front case (1) afterbody; Foundation ring (602) is provided with two trapezoidal grooves and two rectangular recess, and two trapezoidal grooves lay respectively at the both sides of foundation ring (602) bottom, and two trapezoidal grooves are parallel, and two rectangular recess are positioned at the centre of foundation ring (602); Be provided with the sealing of shield shape (201) and pressure ring (203) in each rectangular recess of foundation ring (602), pressure ring (203) is positioned at shield shape sealing (201) top and seals (201) with shield shape to be close to; Dust ring (202) is installed in each trapezoidal groove of foundation ring (602).
4. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 3, it is characterized in that: above the rectangular recess of described foundation ring (602), be provided with interior threaded hole, trimming bolt (206) with nut (207) is deep in rectangular recess through the interior threaded hole on foundation ring (602) top, and pressure ring (203) is fixed on the end shaft shoulder of trimming bolt (206) by pad (205) by fixing bolt (204); Trimming bolt (206) and pressure ring (203), set screw (204) form hinging structure.
5. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 3, is characterized in that: described foundation ring (602) has gap with the tread of front case (1) afterbody.
6. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 3, it is characterized in that: described shield shape sealing (201) top is provided with several pressure rings (203), by the rate of tension of adjustment trimming bolt (206) drive pressure ring (203) adjustment shield shape sealing (201) with the tread of front case (1) afterbody.
7. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 3, is characterized in that: the external diameter of the external diameter of described supporting wheel (501), the external diameter of dust ring (202), shield shape sealing (201) is all tangent with the tread of front case (1) afterbody; When front case (1) produces relative sliding with rear case (6), supporting wheel (501) can produce relative rolling with the tread of front case (1) afterbody.
8. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 1, it is characterized in that: be provided with axle sleeve (503) between the wheel shaft of described supporting wheel (501) and mandrel (502), the external diameter edge of supporting wheel (501) is provided with the rubber of high strength.
9. the rolling support formula seal arrangement of rectangular shield push-bench relay well according to claim 1, it is characterized in that: the horizontal section of described front case (1) and rear case (6) is rectangle, adjustable seal arrangement (2) is with the rectangular continuous distributed of tread of front case (1) afterbody, and wheel device (5) intermittently distributes several along the tread of front case (1) afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338959.6A CN104132140B (en) | 2014-07-17 | 2014-07-17 | A kind of rolling support formula seal arrangement of rectangular shield push-bench relay well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338959.6A CN104132140B (en) | 2014-07-17 | 2014-07-17 | A kind of rolling support formula seal arrangement of rectangular shield push-bench relay well |
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| CN104132140A CN104132140A (en) | 2014-11-05 |
| CN104132140B true CN104132140B (en) | 2015-08-05 |
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| CN201410338959.6A Active CN104132140B (en) | 2014-07-17 | 2014-07-17 | A kind of rolling support formula seal arrangement of rectangular shield push-bench relay well |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107152529B (en) * | 2017-06-14 | 2018-05-04 | 中铁工程装备集团有限公司 | The grease lubrication sealing system and injection monitoring method of push-bench drive system |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2211516Y (en) * | 1995-02-09 | 1995-11-01 | 上海市基础工程公司 | Sealer for pipe propulsion connecting ring |
| JP2003129792A (en) * | 2001-10-29 | 2003-05-08 | Sumitomo Densetsu Corp | Apparatus for mounting middle launching jack for propulsion |
| CN2510702Y (en) * | 2001-11-08 | 2002-09-11 | 余彬泉 | Inflatable changeable sealing-element relay space |
| CN201705362U (en) * | 2010-06-08 | 2011-01-12 | 上海力行工程技术发展有限公司 | Shield center cutting device separated from shield cutter head body |
| CN201794591U (en) * | 2010-09-08 | 2011-04-13 | 洛阳九久技术开发有限公司 | Single-disc central hob of shield machine |
| CN202546006U (en) * | 2011-12-12 | 2012-11-21 | 上海市基础工程有限公司 | High pressure-resistant sealing device used for intermediate jacking station of pipe jacking equipment |
| CN103162012A (en) * | 2011-12-12 | 2013-06-19 | 上海市基础工程有限公司 | Machine head drive and sealing device of slurry balance tube push bench |
| CN202441886U (en) * | 2012-01-19 | 2012-09-19 | 中铁一局集团有限公司 | Rolling type sealing structure for long-distance pipe-jacking intermediate jacking station |
| CN102996811A (en) * | 2012-11-23 | 2013-03-27 | 上海市机械施工有限公司 | Articulation sealing device and installation method thereof |
| CN203702158U (en) * | 2014-01-21 | 2014-07-09 | 中铁隧道集团有限公司 | Cutterhead auxiliary supporting wheel device |
| CN204061907U (en) * | 2014-07-17 | 2014-12-31 | 中铁工程装备集团有限公司 | A kind of rolling support formula seal arrangement of rectangular shield push-bench relay well |
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