CN203271515U - Slurry door for slurry-water shield tunneling machine and filling system of slurry door - Google Patents
Slurry door for slurry-water shield tunneling machine and filling system of slurry door Download PDFInfo
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- CN203271515U CN203271515U CN 201320239552 CN201320239552U CN203271515U CN 203271515 U CN203271515 U CN 203271515U CN 201320239552 CN201320239552 CN 201320239552 CN 201320239552 U CN201320239552 U CN 201320239552U CN 203271515 U CN203271515 U CN 203271515U
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Abstract
The utility model provides a slurry door for slurry-water shield tunneling machine. The slurry door comprises a door panel, a pressure bearing partition plate and a guiding unit, wherein the guiding unit is used for mounting the door panel onto the pressure bearing partition plate; a groove, in which a seal part is accommodated, is formed in the first surface, facing the pressure bearing partition plate, of the door panel. The seal part comprises a center body, at least two outer side bodies and at least two radial connecting arms through which the outer side bodies are connected with the center body, wherein the outer side bodies are fixed in the groove through compressing parts fixed on the first surface of the door panel, thus, a sealed cavity is formed between the seal part and the groove. When a pressure medium is injected into the sealed cavity, the center body moves to the pressure bearing partition plate under pressure action until the sealed surface of the center body is clung to the pressure bearing partition plate. The utility model further provides a filling system used on the slurry door.
Description
Technical field
The utility model belongs to the shield excavation machine technical field, particularly a kind of mud door for the slurry type shield machine.The utility model also relates to a kind of fill system for above-mentioned mud door.
Background technology
Shield construction has fast, safety, to plurality of advantages such as the ground Building Influence are little, become urban subway tunnel at present, across the prefered method to construction safety and the strict underground engineering construction of Land-Subsidence Control such as tunnel over strait, river.Mode according to shield-tunneling construction balance face is different, can be divided into earth pressure balanced shield, EPBS, slurry balance shield and open type shield structure.Wherein, slurry balance shield adopts mud to come balance from the Water And Earth Pressures of face, and it is divided into the gentle dunnage in native cabin (front cabin) (rear cabin) by a pressure-bearing dividing plate with the mud cabin.Pressure-bearing the lower partition has a mud import, and it is the passage of mud discharge currents warp, is also the interior mud communicating passage of the gentle dunnage of mud in native cabin.On the top of mud import, generally all configure the mud door one, be used for mud is imported and exported and close.
In normal tunneling process, be full of the mud with certain pressure in native cabin, and air cushion cabin internal upper part is full of compressed air, the bottom is full of mud.The mud door is mentioned by lift cylinder, and is fixed on above the mud import.The mud import is in opening-wide state, and the air cushion cabin is an enclosure space that bears air pressure and mud pressure at this moment.When needs enter that the air cushion cabin checks or during maintenance activity, the cabin cost is large, the single operation time is short, particularly strict to advancing the cabin personnel because band is compressed into, and is all generally to select normal pressure to advance the cabin mode.And the flexibility of mud door operation and to close the reliability of rear sealing most important, directly affecting normal pressure advances the smooth enforcement of cabin operation and advances cabin personnel's life security, is the important safety device of slurry shield.
Fig. 1 has shown a kind of mud door of existing slurry type shield machine.As shown in Figure 1, the mud door of the prior art comprises door-plate 7A, pressure-bearing dividing plate 11A, by securing member, door-plate 7A is arranged on combined type guide pad on pressure-bearing dividing plate 11A, and is arranged on the pressure bladder 407A in the groove 202A on the side surface of pressure-bearing dividing plate 11A of door-plate 7A.Pressure bladder 407A is fixed in groove 202A by securing member 409A and block 408A.The combined type guide pad comprises guide pad 9A and the lower guide pad 10A that is welded on pressure-bearing dividing plate 11A.Formed gathering sill 12A between upper guide pad 9A and lower guide pad 10A, the side of door-plate 7A remains in this gathering sill 12A.
The operating principle of the mud door of this slurry shield is: after the mud door is transferred and put in place, inflate in pressure bladder by inflating nozzle, make air bag expand, gasbag outer surface is adjacent to the pressure-bearing dividing plate under gas pressure, thereby realizes sealing effectiveness.The blowing pressure is larger, and the seal pressure of gasbag outer surface is also larger, and sealing effectiveness is also better.Because air bag is generally elastomeric material, possesses certain elasticity.When sealing surface retained a small amount of tiny solid particle, air bag also can pass through elastic deformation press seal face after inflation press seal face, thereby realizes sealing.The blowing pressure is larger, and the air bag thrust is also larger, and the rubber compress variation is also larger, and between the opposing sealing surface, the ability of solid particle impact is also larger.Little at edpth of tunnel, native cabin mud pressure is lower, in the situation that the impurity particle that sealing surface enters is less and thinner, this hermetically-sealed construction is suitable, generally can realize the sealing.
But under the large Conditions of Buried Depth in tunnel, there is outstanding shortcoming in this kind airbag structure: the blowing pressure can not be excessive, when seal clearance has entered more thick solid particle, because the blowing pressure is inadequate, gasbag outer surface can not effectively be adjacent to the pressure-bearing dividing plate, thereby has reduced effect.The reason that current air sac sealing bearing capacity is low is as follows: 1) between mud door board and pressure-bearing dividing plate, generally leave the approximately free gap of 5mm, facilitating mud door motion and to reduce friction, when air bag inflation pressure is larger, easily rubber is clamp-oned the gap and destroyed; 2) there is the radial clearance between the installing hole of the inflating nozzle of air bag and valve screw rod, when air bag inflation pressure is larger, rubber can be clamp-oned equally radial clearance below valve and destroyed.
At present tunnel construction, particularly city underground, hidden underground construction, progressively towards large buried depth future development, and the slurry shield soil cabin mud pressure under large Conditions of Buried Depth must strengthen.From improving sealing reliability aspect consideration, also be improved the current demand of mud door the blowing pressure in addition.
The utility model content
The purpose of this utility model is to provide a kind of mud door for the slurry type shield machine,, sealing effectiveness unsettled problem low with the mud door the blowing pressure that solves current use.Only have the above-mentioned two problems of having solved, the normal pressure that the mud door can be applied to slurry shield under large Conditions of Buried Depth advances the cabin operation.
According to first aspect of the present utility model, provide a kind of mud door for the slurry type shield machine.This mud door comprises door-plate, pressure-bearing dividing plate, and for the pilot unit that door-plate is arranged on the pressure-bearing dividing plate.Be formed with at door-plate the groove that has wherein held seal on the first surface of pressure-bearing dividing plate.Wherein, seal comprises centerbody, at least two outer lateral bodys, and each outer lateral body is connected with centerbody at least two linking arms radially.Outer lateral body is fixed in groove by the compressing member on the first surface that is fixed on door-plate, thereby forms annular seal space between seal and groove.Under the pressure-acting of the pressure medium of center physical efficiency in annular seal space towards the pressure-bearing partition movement, until the sealing surfaces of centerbody abuts on the pressure-bearing dividing plate.
In one embodiment, the length of centerbody and cross sectional area are all greater than length and the cross sectional area of outer lateral body.Preferably, the sealing surfaces of centerbody is smooth surface, with the surface of undulations, perhaps has the surface of spacing convave trough.
In one embodiment, not before the injection pressure medium, sealing surfaces is lower than the rubbing surface of compressing member in annular seal space.
In one embodiment, centerbody is prismatic, and is equipped with baffle plate on two opposite flanks of centerbody.Preferably, the sealing surfaces of centerbody under nature lower than the outer surface of door-plate.
In one embodiment, compressing member comprises the first compressing member and the second compressing member that is oppositely arranged, they respectively with baffle plate in one contact.Preferably, the first compressing member and the second compressing member are equipped with detent, and the first surface of door-plate is provided with two corresponding stopper slots, and described detent and stopper slot are worked in coordination with the outer lateral body of fixing seals.
In one embodiment, the surface towards door-plate of the centerbody of sealing ring has central recess.
In one embodiment, pilot unit comprises the first guide pad and the second guide pad.Be formed with the lateral slot be used to the edge that holds door-plate between the first guide pad and the second guide pad, and be provided with spacer block between the bottom surface of the edge of door-plate and lateral slot.
According to second aspect of the present utility model, a kind of fill system for mud door as above is provided, it comprises pressure medium feeding pipe and the gas feeding pipe that is connected with the annular seal space of door-plate, described pressure medium feeding pipe has the backflow branch road.Wherein, the pressure medium feeding pipe can be transported to pressure medium in annular seal space, and in the situation that the gas supply pipe road close and make annular seal space reach required pressure, to keep the sealing of mud door.The gas supply pipe road can deliver gas in annular seal space, in order to make the pressure medium in annular seal space be discharged to the backflow branch road, reduces the pressure in annular seal space, thereby makes the mud door can open and avoid the friction damage of sealing ring.
In one embodiment, pressure medium can be hydraulic oil, water or compressed air.
In one embodiment, the pressure medium feeding pipe comprises accumulator, is used for keeping the pressure in annular seal space.
Compare with the prior art scheme, the beneficial effect that mud door scheme provided by the utility model has is, arranging by the boss both sides in the linking arm centre position can be with the expand flexible metal baffle that move and cancel the inflating nozzle structure of commonly using of sealing ring, prevented that effectively sealing ring is destroyed because clamp-oning the gap after bearing high pressure, improved the bearing capacity of sealing ring, sealing reliability is higher, particularly can be used in the operation of large buried depth operating mode; Both can the injection liquid force feed in annular seal space, water, also can inflate, thereby enlarge the range of choice of mud door pressure medium and the pressurising scope of permission, improved convenience, safety and reliability that equipment uses.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is carried out detailed describing.Yet only providing in order to understand better the utility model of accompanying drawing is provided, they not should be appreciated that paired restriction of the present utility model.
Fig. 1 is the sealed structural representation of existing mud door;
Fig. 2 is in the schematic diagram of open mode according to mud door of the present utility model;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is in the schematic diagram of closed condition according to mud door of the present utility model;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the C-C sectional view of Fig. 4;
Fig. 7 has shown and has been used to the medium supply system that pressure medium is provided according to mud door of the present utility model.
The specific embodiment
The below contrasts accompanying drawing, by the description to embodiment, to the specific embodiment of the present utility model, is described in further detail.
Fig. 2 to 3 has shown the schematic diagram according to the mud door 100 for the slurry type shield machine of the present utility model.Under shown position, the push cylinder 25 of mud door 100 is in contraction state, and mud door 100 is in untapped state at this moment, that is, mud door 100 does not seal stock inlet 17.
As shown in Figure 3, mud door 100 comprises door-plate 7, pressure-bearing dividing plate 11, and for the pilot unit that door-plate 7 is arranged on pressure-bearing dividing plate 11.In the illustrated embodiment, this pilot unit is the combined type guide pad, and it comprises the first guide pad 9 and is welded on the second guide pad 10 on pressure-bearing dividing plate 11.The first guide pad 9 is fixed on the second guide pad 10 by securing member 41.Formed gathering sill 8 between the first guide pad 9 and the second guide pad 10, the side of door-plate 7 is remained in this gathering sill 8 regularly by the pressuring action of the first guide pad 9 and/or the second guide pad 10.Door-plate 7 be formed with groove 202 on the first surface 71 of pressure-bearing dividing plate 11, lay seal 4 in this groove 202, be used for forming sealing between door-plate 7 and pressure-bearing dividing plate 11.Said structure and parts are known in the art, are described in this and omit therefore in detail.
According to the utility model, seal 4 comprises centerbody 406.This centerbody 406 is for example prismatic member, preferably has square cross section.Seal 4 also comprises at least two outer lateral bodys 402, and they are along circumferentially arranging equably.In the illustrated embodiment, seal 4 also comprises two outer lateral bodys 402 that are oppositely arranged in 180 degree to each other.Outer lateral body 402 for example can have square or circular cross section, the cross section that perhaps has other any desired configuration.In addition, seal 4 also comprises the radially linking arm 405 that each outer lateral body 402 is connected with centerbody 406, is two radially linking arms 405 in this illustrated embodiment.In the illustrated embodiment, the bottom of centerbody 406 has central recess 404.
As shown in Figure 3, also be provided with compressing member in groove 202, it is fixed on the first surface 71 of door-plate 7 by securing member 43 on the one hand, on the other hand outer lateral body 401 is pressed on the first surface of door-plate 7.Particularly, compact heap comprises the first compressing member 3 and the second compressing member 6, and they respectively are used for compressing one of two outer lateral bodys 401.In order to strengthen the positioning compression effect, be respectively equipped be used to the detent 401 that holds lateral body 402 outside two on the first compressing member 3 and the second compressing member 6, and be provided with stopper slot 72 in the corresponding position of first surface 71.Thus, the first compressing member 3 and the second compressing member 6 can be fixed the outer lateral body 401 of seal 4 securely.By above-mentioned setting, form an annular seal space 201 between seal 4 and groove 202.
According to a preferred embodiment of the present utility model, compressing member 3,6 and the centerbody 406 of seal 4 between be respectively equipped with a baffle plate 5.This baffle plate 5 for example can be made of metal.Baffle plate 5 and compressing member 3,6 and all form with seal 4 and contact are preferably clearance-type and coordinate contact.
In addition, according to a preferred embodiment of the present utility model, in order better compressing member 3,6 to be positioned, limited step 602 and 603 can be set on first surface 71.
Be under untapped state at the mud door 100 shown in Fig. 2 and 3, there is not pressure medium in annular seal space 201 planted agents, although or have a small amount of pressure medium, it also is in normal pressure or lower than under atmospheric pressure.In this case, seal 4 is in the nature advanced position, and the sealing surfaces of centerbody 406 is lower than the outer surface of door-plate 7.
Fig. 4 to 6 has shown the use state according to the mud door 100 for the slurry type shield machine of the present utility model.At this moment, 15 elongations of the push cylinder of mud door 100 promote mud door 100 and move under the guiding of guiding groove 8, until by the spacing and stop motion of limited block 16.Therefore, mud door 100 has sealed stock inlet 17.
In this state, the fluid intake 14 injection pressure media by being positioned at door-plate 7 bottoms places are to annular seal space 201.As shown in Figure 5, when 201 injection pressure medium in annular seal space, centerbody 406(is together with linking arm 405 radially) under the effect of pressure towards 11 motions of pressure-bearing dividing plate, until the sealing surfaces 403 of centerbody 406 abuts on pressure-bearing dividing plate 11.At this moment, formed good sealing between door-plate 7 and pressure-bearing dividing plate 11.
Due to the baffle plate 5 between the centerbody 406 that is arranged on seal and compressing member also can be because of the motion of linking arm 405 radially in company with centerbody 406 together towards 11 motions of pressure-bearing dividing plate.Can prevent effectively that so just seal 4 is squeezed in the gap and is damaged, and has improved bearing capacity and the reliability of seal after bearing high pressure.This is especially favourable for large buried depth operating mode.
Fig. 6 has shown that more clearly the sealing surfaces of centerbody abuts in the state on the pressure-bearing dividing plate.Fig. 6 also shows the outlet opening 13 for pressure medium.Easily understand, when to the interior injection pressure medium of annular seal space 201, at first the air that originally may exist in annular seal space will discharge.When outlet opening 13 discharge pressure medium, can be with outlet opening 13 sealings.Continue to the interior injection pressure medium of annular seal space 201, until the sealing surfaces 403 of seal 4 abuts on pressure-bearing dividing plate 11 this moment.
In a specific embodiment, as shown in Figure 3, in gathering sill 8, spacer block 1 can be set, in order to the side of door-plate 7 can be remained in gathering sill 8 better.
In order to strengthen sealing effectiveness, the centerbody 406 of seal 4 should have than the larger sectional area of outer lateral body 402 and larger length.The centerbody 406 of seal 4 can be for solid or hollow.
In addition, seal 4 should be designed to when being in the nature retracted state, the sealing surfaces 403 of centerbody 406 should be in than baffle plate 5 and compressing member 3,6 and rubbing surface 601 further from the position of pressure-bearing dividing plate 11.Thus, the centerbody 406 of seal 4 can be avoided outside damage under off working state.
According on the other hand of the present utility model, also provide a kind of medium supply system that is used to mud door of the present utility model that pressure medium is provided.Below with reference to Fig. 7, this medium supply system is described in detail.
As shown in Figure 7, this medium supply system comprises aerating pipeline and in-line, and wherein in-line is connected with oil-in 15 on door-plate 7, and the aerating pipeline is connected with oil-out 14 on door-plate 7.
The aerating pipeline comprises gas source inlet 251, air reducing valve 252, hydraulic quick coupler 203, ball valve 204, one way valve 218 and pressure meter 206 successively.Be provided with a branch air path 221 between pressure meter 206 and one way valve 218, ball valve 205 is installed on this branch road.In-line comprises oil sources import 207, hydraulic relief valve 209, hydraulic quick coupler 210, ball valve 222, hydraulic accumulator 208, ball valve 211, one way valve 219 and input pressure table 214 successively.Be provided with branch's oil circuit 220 between pressure meter 214 and one way valve 219.Ball valve 213 and fuel tank 212 are installed on this branch's oil circuit successively.
When the push cylinder 25 of mud door 100 was in contraction state, mud door 100 was in open mode.The ball valve 205 of medium supply system is opened, and other ball valves are closed, and this moment, seal groove 201 inner spaces on door-plate 7 were communicated with atmosphere, and sealing ring 4 is pressurized and be in contraction state not.
When the push cylinder 25 of mud door 100 is extended, promote mud door 100 and move under the guiding of guiding groove 8, until mud door 100 has sealed stock inlet 17.Mud door 100 is in closed condition at this moment.In this case, open successively ball valve 222 and ball valve 211, toward the interior injection liquid force feed of seal groove 201, keep ball valve 205 to open this moment, and ball valve 213 and ball valve 204 are closed.When ball valve 205 beginning spillage force feed, close immediately ball valve 205.Continue to pressurize toward seal groove 201 internal-filling liquids by ball valve 222 and ball valve 211, pressure dwell is observed input pressure table 214 numerical value.When indicated value reaches predetermined pressure, close ball valve 222.208 pairs of seal grooves of accumulator this moment carry out voltage stabilizing, and sealing ring 4 is in the topping up sealing state.
Finish using to reopen the time when mud door 100, need first carry out pressure release to the medium supply system.First close ball valve 211, then open ball valve 213, sealing ring 4 under mud pressure and self screen resilience effect with the high pressure liquid force feed in seal groove 201 in branch line 220 drains into fuel tank 212.When branch line 212 outlet no longer includes oil spill and goes out, open the ball valve 204 on the aerating pipeline, Compressed Gas enters in seal groove 201, hydraulic oil residual in groove is extruded, until branch line 220 end Exhaust Gas.Close ball valve 204 and ball valve 213 this moment, opens ball valve 205 venting, and sealing ring 4 is in contraction state.Can promote mud door 100 this moment with push cylinder 25 retractions, and stock inlet 17 is opened.
Easily understand, the medium supply system adopts identical as the operating principle of pressure medium and employing hydraulic oil of water, therefore repeat no more.
The medium supply system can also be used for example compressed air of gas, and this moment, system operation principles was as follows.When mud door 100 was in the state of opening, the ball valve 205 of medium supply system was opened, and all the other ball valves are closed, and this moment, seal groove 201 inner spaces on door-plate 7 were communicated with atmosphere, and sealing ring 4 is pressurized and be in contraction state not.When the push cylinder 25 of mud door 100 is extended, promote mud door 100 and move under the guiding of guiding groove 8, until mud door 100 has sealed stock inlet 17.Mud door 100 is in closed condition at this moment.At this moment, first close ball valve 205, then open ball valve 204 beginnings toward the interior inflating pressure of seal groove 201, observe pressure meter 206, reach and be scheduled to close ball valve 204 after the blowing pressure, sealing ring 4 is in the gas-flow closure state.Finish using need to reopen the time when mud door 100, need first carry out pressure release to the medium supply system, open ball valve 205 and carry out exhaust pressure relief this moment, observes pressure meter 206.When manometric show value is got back to zero-bit, just push cylinder 25 retractions can be promoted mud door 100, stock inlet 17 is opened.
Above the utility model purpose, technical scheme and beneficial effect are further illustrated.Institute it should be understood that the above only for specific embodiment of the utility model, is not limited to the utility model; all within spirit of the present utility model and principle; any modification of making is equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (13)
1. mud door that is used for the slurry type shield machine, comprise door-plate, pressure-bearing dividing plate and be used for described door-plate is arranged on pilot unit on described pressure-bearing dividing plate, be formed with at described door-plate the groove that has wherein held seal on the first surface of described pressure-bearing dividing plate
It is characterized in that, described seal comprises centerbody, at least two outer lateral bodys, and each described outer lateral body is connected with centerbody at least two linking arms radially, described outer lateral body is fixed in described groove by the compressing member on the first surface that is fixed on described door-plate, thereby form annular seal space between described seal and described groove
Wherein, under the pressure-acting of the pressure medium of described center physical efficiency in annular seal space towards described pressure-bearing partition movement, until the sealing surfaces of described centerbody abuts on described pressure-bearing dividing plate.
2. mud door as claimed in claim 1, is characterized in that, the length of described centerbody and cross sectional area are all greater than length and the cross sectional area of described outer lateral body.
3. mud door as claimed in claim 1 or 2, is characterized in that, the sealing surfaces of described centerbody is smooth surface, with the surface of undulations, perhaps has the surface of spacing convave trough.
4. mud door as claimed in claim 1 or 2, is characterized in that, not before the injection pressure medium, described sealing surfaces is lower than the rubbing surface of described compressing member in annular seal space.
5. mud door as claimed in claim 1 or 2, is characterized in that, described centerbody is prismatic, and be equipped with baffle plate on two opposite flanks of described centerbody.
6. mud door as claimed in claim 5, is characterized in that, the sealing surfaces of described centerbody under nature lower than the outer surface of described door-plate.
7. mud door as claimed in claim 5, is characterized in that, described compressing member comprises the first compressing member and the second compressing member that is oppositely arranged, they respectively with described baffle plate in one contact.
8. mud door as claimed in claim 7, it is characterized in that, described the first compressing member and the second compressing member are equipped with detent, and the first surface of described door-plate is provided with two corresponding stopper slots, and described detent and stopper slot are worked in coordination with the outer lateral body of fixing described seal.
9. mud door as claimed in claim 1 or 2, is characterized in that, the surface towards described door-plate of the centerbody of described sealing ring has central recess.
10. mud door as claimed in claim 1 or 2, it is characterized in that, described pilot unit comprises the first guide pad and the second guide pad, be formed with the lateral slot be used to the edge that holds described door-plate between described the first guide pad and the second guide pad, and be provided with spacer block between the bottom surface of the edge of described door-plate and described lateral slot.
11. a fill system that is used for mud door as described in claim 1 to 10 any one comprises the pressure medium feeding pipe and the gas feeding pipe that are connected with the annular seal space of described door-plate, described pressure medium feeding pipe has the backflow branch road,
Wherein, described pressure medium feeding pipe can be transported to pressure medium in described annular seal space, and in the situation that described gas supply pipe road close and make described annular seal space reach required pressure, keeping the sealing of described mud door,
Described gas supply pipe road can deliver gas in described annular seal space, in order to make the pressure medium in described annular seal space be discharged to described backflow branch road, reduce the pressure in described annular seal space, thereby make described mud door can open and avoid the friction damage of sealing ring.
12. the fill system of mud door as claimed in claim 11 is characterized in that, described pressure medium is hydraulic oil, water or compressed air.
13. the fill system of mud door as described in claim 11 or 12 is characterized in that, described pressure medium feeding pipe comprises accumulator, is used for keeping the pressure in described annular seal space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239552 CN203271515U (en) | 2013-05-06 | 2013-05-06 | Slurry door for slurry-water shield tunneling machine and filling system of slurry door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239552 CN203271515U (en) | 2013-05-06 | 2013-05-06 | Slurry door for slurry-water shield tunneling machine and filling system of slurry door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203271515U true CN203271515U (en) | 2013-11-06 |
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ID=49501954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320239552 Withdrawn - After Issue CN203271515U (en) | 2013-05-06 | 2013-05-06 | Slurry door for slurry-water shield tunneling machine and filling system of slurry door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203271515U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255991A (en) * | 2013-05-06 | 2013-08-21 | 中国铁建重工集团有限公司 | Slurry door for slurry shield tunneling machine and filling system of same |
| CN109356594A (en) * | 2018-10-15 | 2019-02-19 | 中国铁建重工集团有限公司 | A kind of external mud door sealing system for slurry balance shield machine |
-
2013
- 2013-05-06 CN CN 201320239552 patent/CN203271515U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255991A (en) * | 2013-05-06 | 2013-08-21 | 中国铁建重工集团有限公司 | Slurry door for slurry shield tunneling machine and filling system of same |
| CN103255991B (en) * | 2013-05-06 | 2015-06-17 | 中国铁建重工集团有限公司 | Slurry door for slurry shield tunneling machine and filling system of same |
| CN109356594A (en) * | 2018-10-15 | 2019-02-19 | 中国铁建重工集团有限公司 | A kind of external mud door sealing system for slurry balance shield machine |
| CN109356594B (en) * | 2018-10-15 | 2024-04-26 | 中国铁建重工集团股份有限公司 | External mud door sealing system for slurry balance shield machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20150617 |
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| RGAV | Abandon patent right to avoid regrant |