CN106837361B - A kind of shield machine shield tail antireflux pressure bladder and preparation method thereof - Google Patents
A kind of shield machine shield tail antireflux pressure bladder and preparation method thereof Download PDFInfo
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- CN106837361B CN106837361B CN201710079568.0A CN201710079568A CN106837361B CN 106837361 B CN106837361 B CN 106837361B CN 201710079568 A CN201710079568 A CN 201710079568A CN 106837361 B CN106837361 B CN 106837361B
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- external capsule
- skirt
- caplet
- layers
- capsula interna
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- 230000000151 anti-reflux effect Effects 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 239000002775 capsule Substances 0.000 claims abstract description 99
- 239000007894 caplet Substances 0.000 claims abstract description 51
- 241000459479 Capsula Species 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 7
- 238000004073 vulcanization Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 238000003490 calendering Methods 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract description 4
- 238000004080 punching Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000004519 grease Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 210000004712 air sac Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/02—Inflatable articles
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Diaphragms And Bellows (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Particularly, the present invention relates to a kind of shield machine shield tail antireflux pressure bladders and preparation method thereof.The technical issues of in the presence of the prior art, the present invention provides a kind of shield machine shield tail antireflux pressure bladder, it includes a sealing capsula interna for inflation, the capsula interna is annular in shape, and capsula interna is equipped with air inflation nozzle, it is characterised in that: further includes external capsule, the external capsule is annular in shape, the section of external capsule is in the U-shaped droped to the ground, and extends outward to form skirt respectively in the caplet up and down of U-shaped opening external capsule, several fixation holes are uniformly provided on the skirt of upper and lower caplet；The capsula interna is located inside external capsule, and air inflation nozzle is stretched out by external capsule, and after the skirt of caplet is bonded fixed above and below external capsule, external capsule is with the synchronous harmomegathus of capsula interna.Production method includes capsula interna production, the production of external capsule, external capsule punching, capsula interna installation.Beneficial effect can be effectively reduced the gas leakage probability of air bag using the combination of capsula interna and external capsule, effectively improve the efficiency of shield machine scene more ventilation bag.
Description
Technical field
Particularly, the present invention relates to a kind of shield machine shield tail antireflux pressure bladders and preparation method thereof.
Background technique
The shield tail of shield machine is mainly used for screening built tunnel piping work and the sealing of shield body tail portion, passes through hinged oil cylinder
It is connected with middle shield, and is hingedly sealed equipped with prefastening.To reduce the gap between soil layer and section of jurisdiction, to reduce grouting amount and right
The disturbance on stratum, shield tail is made as a cylinder-shaped thin walled shell more at present, but can bear soil pressure and correction, turning when institute simultaneously again
The length of the external force of generation, shield position must determine according to the width of section of jurisdiction and shape and the structure of tail sealing, while in shield tail
Several shield tail grease injection pipes and synchronous grouting pipe are reasonably arranged on shell.To prevent water, soil and pressure injection material from shield
Tail enters in shield, and tail sealing device of shield is all equipped at shield tail, and current tail sealing generally uses the preferable wire brush of effect
Add steel disc pressing plate to be made shield tail brush, is full of grease in wire brush, it is not only flexible but also have plasticity.But the structure is oily in the construction process
Rouge dosage is huge, and according to measuring and calculating, 1 km of every driving, the dosage of grease is also mentioned up to 2,000,000 yuan or more, while to grease injection pipe
Higher parameter request out, it is desirable that grease injection pipe has very high resistance to pressure and leakproofness.
Chinese patent application: application number: 201510445604.1 disclose a kind of tail sealing device of shield, it is characterised in that:
Including sealing mechanism, the sealing mechanism includes elastic packing capsule and the connection with the connected setting in one end of the elastic packing capsule
Part；The connector is detachably connected on the inner wall of shield tail shell of shield machine；Stream is offered on the elastic packing capsule
Body charge and discharge mouth, after elastic packing capsule filling pressurized fluid, working face respectively with the inner wall of the shield tail shell and section of jurisdiction
It abuts against.The technical solution realizes the sealing of shield tail using the rising of sealed bladder, can reduce the usage amount of grease and effective
It prevents water, soil pressure note material from entering inside shield, plays the role of energetically to the sealing of shield tail.But shield machine is in forward work
In the process, sealed bladder carries out CONTACT WITH FRICTION with section of jurisdiction always, thus wearability to sealed bladder and leakproofness propose it is very high
Technical requirements, the raising of sealed bladder wearability mean sealed bladder thickness and hardness relative increase, and the promotion of These parameters
Certain puzzlement is caused to the leakproofness of sealed bladder, in practical applications, the main problems are as follows: 1, air bag and connection
Capsule skin intensity at part is inadequate, and when air bag bears high compression swelling repeatedly, the capsule skin of the junction is easy to tear, cause connection and
Sealing failure；2, during the work time, if gas leakage occurs for air bag, when more ventilation bag, needs to carry out large area to shield tail position to tear open
It removes, is then reinstalled new Air sac cover in shield tail, the workload for thereby resulting in more ventilation bag increases severely, and on ground
It is difficult to realize operate in lower environment.
Summary of the invention
The technical issues of in the presence of the prior art, the present invention, which provides one kind, can ensure air sac sealing and hold
Easily changeable shield machine shield tail antireflux pressure bladder, and a kind of production method of air bag is provided in turn.
To realize the above-mentioned technical purpose, the technical solution adopted by the present invention are as follows: shield machine shield tail antireflux pressure bladder,
Sealing capsula interna including one for inflation, the capsula interna is annular in shape, and capsula interna is equipped with air inflation nozzle, it is characterised in that: further includes
External capsule, the external capsule is annular in shape, and the section of external capsule is in the U-shaped droped to the ground, and distinguishes in the caplet up and down of U-shaped opening external capsule
Skirt is extended outward to form, several fixation holes are uniformly provided on the skirt of upper and lower caplet；The capsula interna is located inside external capsule,
Air inflation nozzle is stretched out by external capsule, and after the skirt of caplet is bonded fixed above and below external capsule, external capsule is with the synchronous harmomegathus of capsula interna.
Further, the skirt of caplet is equipped with ring and fills recessed groove, the fixation hole in the upper caplet on the external capsule
In recessed groove, after the fitting of the skirt of upper and lower caplet, the fixation hole in upper and lower caplet corresponds perforation.
Further, the interior ring that is equipped with of the ring dress recessed groove fills pressing plate, and ring dress pressing plate is equipped with to be fixed on external capsule skirt
The corresponding through-hole in hole.
Further, the external capsule is vulcanized by film for rubber, is respectively equipped with 4 layers of cord in caplet above and below external capsule
Layer, wherein 45 degree of arrangement left-right rotaries of interior two layers of cord woven design are each together, 60 degree of arrangement left-right rotaries of outer two layers of cord woven design are each together.
Further, the casing ply above and below external capsule in caplet extends in skirt, wherein interior two layers of cord is on skirt side
Fold inward is at edge to make to form 6 layers of casing ply in skirt.
Further, the surface of caplet is equipped with abrasive rubber layer on external capsule, and abrasive rubber layer and the vulcanization of upper caplet are one
Body.
Further, the lower surface of caplet skirt is equipped with the top bar seam allowance being recessed inwardly, the capsule under external capsule on external capsule
The upper surface of piece skirt is equipped with outwardly projecting seam allowance of getting out of a predicament or an embarrassing situation, after upper and lower skirt fitting, top bar seam allowance and seam allowance of getting out of a predicament or an embarrassing situation
It coincide to limit the mutual changing of the relative positions in skirt of caplet up and down.
Further, a kind of production method of above-mentioned shield machine shield tail antireflux pressure bladder comprising the following steps:
1) conventionally capsula interna packing element is produced in vulcanization, is then punched on capsula interna, is filled using the installation of hot sticky method
Gas nozzle；
2) production of external capsule
2.1 raw stocks are overlapped, and casing ply is superimposed between every two layers of raw stock, and the casing ply uses nylon wire
Pre- calendering is carried out with rubber to process, is superimposed 4 layers of casing ply altogether, wherein two layers of casing ply of lower section uses 45 degree of cloth of cord woven design
It is each together to set left-right rotary, two layers of top, 60 degree of cord woven design arrangement left-right rotary is each together；
2.2 are put into mold in the raw stock being superimposed, and bending raw stock forms it into U-shaped of droping to the ground, is then fed into flat
In plate vulcanizer, on upper layer, one layer of raw stock is laid as abrasive rubber layer, vulcanizer temperature 160-180 in the surface of raw stock
DEG C, vulcanize 30 minutes under 10MPa environment, form external capsule；
3) it is punched at the skirt of caplet above and below external capsule；
4) capsula interna is sent into inside external capsule, air inflation nozzle is then got on external capsule and stretches hole, air inflation nozzle is stretched out by the hole.
Further, in step 2.1, the width of the lower two layers casing ply is greater than the width of raw stock, two layers of curtain
The edge of layer of cloth is stretched out by raw stock edge, after all raw stocks and wear-resisting raw stock are superimposed, the cord of extension
Layer fold inward is by the edge wrap of raw stock and another two layers of casing ply above it.
The invention has the benefit that general using the gas leakage that the combination of capsula interna and external capsule can be effectively reduced air bag
Rate effectively improves the efficiency of shield machine scene more ventilation bag, while external capsule increases casing ply at skirt and can prevent external capsule from existing
The problem of skirt tearing occurs during expanding repeatedly, while can guarantee the rubber layer thickness at skirt again, improve external capsule
Service life.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the pressure bladder.
Attached drawing 2 is the cross section structure figure of external capsule.
Attached drawing 3 is enlarged diagram at A in attached drawing 2.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in Fig. 1, shield machine shield tail antireflux pressure bladder comprising external capsule 1, the external capsule 1 is annular in shape, in conjunction with attached
Shown in Fig. 2, the section of external capsule 1 is in the U-shaped droped to the ground, outside respectively in the upper caplet 2 and lower caplet 3 of U-shaped opening external capsule
Skirt 4 is extended to form, several fixation holes 5 are uniformly provided on the skirt of upper and lower caplet.
It further include the capsula interna (attached to be not shown in the figure) inside external capsule 1, capsula interna annularly seals, and capsula interna is equipped with inflation
Mouth 6, as shown in Fig. 1, air inflation nozzle 6 are stretched out by external capsule.In conjunction with shown in attached drawing 2, the skirt of caplet, which is bonded, above and below external capsule is fixed
Afterwards, external capsule 1 is with the synchronous harmomegathus of capsula interna.
The air bag further includes ring dress pressing plate (attached to be not shown in the figure) on skirt 4 when installing, and ring dress pressing plate is equipped with
With the one-to-one through-hole of fixation hole in upper and lower caplet, through-hole and external capsule on pressing plate or more caplet skirt are passed through using connection bolt
Fixation hole on side secures the air-bag on the shell of shield machine shield tail.It is multistage that its middle ring, which fills pressing plate, after the combination of multistage pressing plate
Form ring dress.
Subject to fidelity pressing plate position, as shown in attached drawing 1 and attached drawing 2, on external capsule on the skirt of caplet be equipped with ring fill
Recessed groove 7, fixation hole 5 are located in recessed groove 7.When installation, ring dress pressing plate is located at the skirt of the caplet up and down of external capsule in recessed groove 7
Side fitting compresses, and external capsule forms closed state, and external capsule synchronizes harmomegathus with the harmomegathus of capsula interna.
In actual application, during external capsule is rising, at the skirt of upper and lower caplet can with external capsule rising by
To the traction force to external capsule utricule direction, which be can not be ignored, and the damaged location of most external capsules concentrates at skirt, mainly
It shows as tearing at skirt.The problem by applicant repeatedly the study found that air bag during the work time, tiny sand
Slurry mixed liquor, which can enter, forms lubricant effect between skirt up and down, and the frictional force between upper and lower skirt reduces, upper and lower skirt it
Between generate the changing of the relative positions, when the changing of the relative positions persistently enhances, with larger changing of the relative positions trend a side shirt edge i.e. can tear, cause external capsule to damage
It is bad.To prevent the mutual changing of the relative positions of skirt generation up and down, as shown in Fig. 3, the lower surface of caplet skirt is equipped with and concaves on external capsule
Sunken top bar seam allowance 8, the upper surface of caplet skirt is equipped with outwardly projecting seam allowance 9 of getting out of a predicament or an embarrassing situation under external capsule, when using pressing plate
After upper and lower skirt is compressed fitting, top bar seam allowance 8 coincide with seam allowance 9 of getting out of a predicament or an embarrassing situation so that the skirt for limiting caplet up and down is mutually wrong
It is dynamic.After above-mentioned technical proposal, the tearing rate at external capsule skirt is significantly reduced, rising when by skirt plane contact
It rises to 3.2 ten thousand times for number 1.8 ten thousand times and skirt is without tearing phenomenon.
In addition the scratch-resistant performance between the increase air bag and section of jurisdiction, as shown in Fig. 2, the surface of caplet on external capsule
One layer of abrasive rubber layer 10 is laid, abrasive rubber layer 10 is integrated with the vulcanization of upper caplet 2.
The external capsule mainly uses rubber material to vulcanize, for the intensity for increasing external capsule caplet, as shown in Fig. 2, external capsule
The inside of caplet is equipped with four layers of casing ply 11, which extends at the skirt of upper and lower caplet.
In the present embodiment, restriction is made that the setting of casing ply, wherein 45 degree of arrangements left and right of interior two layers of cord woven design
Rotation is each together, and 60 degree of arrangement left-right rotaries of outer two layers of cord woven design are each together.It is staggeredly superimposed using the different casing ply of angle
Setting, can effectively enhance the intensity and anti-drawing characteristic of caplet.
As shown in Fig. 2, due to the presence of 4 position fixation hole 5 of skirt, the strength reduction at skirt is caused, to increase skirt
Intensity and tear resistance at side are equipped with 6 layers of casing ply inside the rubber at 4 position of skirt.
The production method of the air bag is described in detail below.
The production method of the shield machine shield tail antireflux pressure bladder comprising the following steps:
1) conventionally capsula interna packing element is produced in vulcanization, is then punched on capsula interna, is filled using the installation of hot sticky method
Gas nozzle.The production method belongs to conventional production method in rubber industry, not described in detail herein.
2) production of external capsule
2.1 raw stocks are overlapped
It is first laid with one layer of raw stock, is then laid with one layer of casing ply above it, casing ply is pre- using cord and sheet rubber
First roll, is then being laid with one layer of raw stock on casing ply, continuation is laid with casing ply, above-mentioned two layers of curtain on raw stock
Layer of cloth together, is then laid with raw stock, raw stock upper berth using each rotation in 45 degree of arrangement left and right of cord woven design herein on casing ply
If casing ply, it is laid with raw stock on casing ply, is laid with one layer of casing ply on raw stock again, which adopts
Together with each rotation in 60 degree of arrangement left and right；
The raw stock being superimposed and casing ply are put into mold by 2.2, and bending raw stock forms it into U-shaped of droping to the ground, then
It is sent into vulcanizing press, on upper layer, one layer of raw stock is laid as abrasive rubber layer, vulcanizer temperature in the surface of casing ply
160-180 DEG C, vulcanize 30 minutes under 10MPa environment, form external capsule；
3) it is punched at the skirt of caplet above and below external capsule；
4) capsula interna is sent into inside external capsule, air inflation nozzle is then got on external capsule and stretches hole, air inflation nozzle is stretched out by the hole.
The external capsule made according to the method described above, the thickness and intensity at the skirt position of external capsule cannot obviously be met the needs of, when
After punching is fixed, the tearing at skirt position is easily caused in the expansion process of external capsule.
For the anti-tear tensile strength for increasing skirt position, the interior number of plies for requiring to increase casing ply of the rubber layer at skirt position.
The application is carrying out being superimposed in step of raw stock and casing ply, in skirt position list in the production most started
Solely increase by two layers of casing ply, but found after vulcanizing, the thickness of skirt position especially recessed groove outside left is obviously thinning, transversal
Face only visible two layers of casing ply, and cause the irregular of recess groove shape.
After repetition test, it has been found that being vulcanized after individually increasing by two layers of casing ply at skirt position
During, uppermost two layers of casing ply is in active state, and spacing of the vulcanizer up and down between vulcanizing board is fixed, when adding
After pressure, two layers of casing ply of top layer can outside Slideslip, two layers of casing ply is during outside Slideslip, by skirt portion
The sizing material of position and its casing ply of inside inwardly squeeze, and so as to cause the reduction of recessed groove outside left thickness, have seriously affected skirt
The intensity of edge position causes skirt position to be easy to tear.
In order to solve the above technical problems, applicant adopts the following technical scheme that and is solved by multi-party test.
When progress raw stock is superimposed with casing ply, make the width of lower two layers casing ply greater than the width of raw stock, two
The edge of layer casing ply is stretched out by raw stock edge, after all raw stocks and wear-resisting raw stock are superimposed, such as 2 institute of attached drawing
Show, the casing ply fold inward of extension is by the edge wrap of raw stock and another two layers of casing ply above it, in skirt portion
6 layers of casing ply are formed in the rubber layer of position, when press cure, under the package of two layers of casing ply below, even if sizing material is inside
Movement is squeezed, but can guarantee the thickness at skirt position, so that skirt position is kept enough thickness, and thickness uniform ground, together
When 6 layers of casing ply effectively increase the intensity at skirt position, skirt position can be effectively prevent to tear.
Claims (7)
1. shield machine shield tail antireflux pressure bladder comprising a sealing capsula interna for inflation, the capsula interna is annular in shape, interior
Capsule is equipped with air inflation nozzle, it is characterised in that: further includes external capsule, the external capsule is annular in shape, and the section of external capsule is in the U-shaped droped to the ground
Type extends outward to form skirt in the caplet up and down of U-shaped opening external capsule respectively, is uniformly provided on the skirt of upper and lower caplet
Several fixation holes；The capsula interna is located inside external capsule, and air inflation nozzle is stretched out by external capsule, and the skirt fitting of caplet is solid above and below external capsule
After fixed, external capsule is with the synchronous harmomegathus of capsula interna；
The lower surface of caplet skirt is equipped with the top bar seam allowance being recessed inwardly, the upper surface of caplet skirt under external capsule on external capsule
Equipped with outwardly projecting seam allowance of getting out of a predicament or an embarrassing situation, after upper and lower skirt fitting, top bar seam allowance and seam allowance of getting out of a predicament or an embarrassing situation coincide to limit up and down
The mutual changing of the relative positions in the skirt of caplet；
The skirt of caplet is equipped with ring and fills recessed groove on the external capsule, the fixed hole position in the upper caplet in recessed groove,
After the fitting of the skirt of upper and lower caplet, the fixation hole in upper and lower caplet corresponds perforation.
2. shield machine shield tail antireflux pressure bladder according to claim 1, it is characterised in that: in the ring dress recessed groove
Pressing plate is filled equipped with ring, ring fills pressing plate and is equipped with through-hole corresponding with fixation hole on external capsule skirt.
3. shield machine shield tail antireflux pressure bladder according to claim 1, it is characterised in that: the external capsule is by rubber
Film vulcanizes, and is respectively equipped with 4 layers of casing ply in caplet above and below external capsule, wherein 45 degree of arrangements left and right of interior two layers of cord woven design
Rotation is each together, and 60 degree of arrangement left-right rotaries of outer two layers of cord woven design are each together.
4. shield machine shield tail antireflux pressure bladder according to claim 3, it is characterised in that: external capsule is up and down in caplet
Casing ply extends in skirt, wherein interior two layers of cord is in skirt edge fold inward to make to form 6 layers of curtain in skirt
Layer of cloth.
5. shield machine shield tail antireflux pressure bladder according to claim 1, it is characterised in that: the table of caplet on external capsule
Face is equipped with abrasive rubber layer, and abrasive rubber layer is integrated with the vulcanization of upper caplet.
6. a kind of production method of any one of claim 1-5 shield machine shield tail antireflux pressure bladder comprising following
Step:
1) conventionally capsula interna packing element is produced in vulcanization, is then punched on capsula interna, installs air inflation nozzle using hot sticky method；
2) production of external capsule
2.1 raw stocks are overlapped, and casing ply is superimposed between every two layers of raw stock, and the casing ply uses nylon wire and rubber
Glue carries out pre- calendering and processes, and is superimposed 4 layers of casing ply altogether, wherein two layers of casing ply of lower section is left using 45 degree of arrangements of cord woven design
Dextrorotation is each together, and two layers of top, 60 degree of cord woven design arrangement left-right rotary is each together；
2.2 are put into mold in the raw stock being superimposed, and bending raw stock forms it into U-shaped of droping to the ground, is then fed into plate sulphur
In change machine, on upper layer, one layer of raw stock is laid as abrasive rubber layer in the surface of raw stock, 160-180 DEG C of vulcanizer temperature,
Vulcanize 30 minutes under 10MPa environment, forms external capsule；
3) it is punched at the skirt of caplet above and below external capsule；
4) capsula interna is sent into inside external capsule, air inflation nozzle is then got on external capsule and stretches hole, air inflation nozzle is stretched out by the hole.
7. a kind of production method of shield machine shield tail antireflux pressure bladder according to claim 6, it is characterised in that:
In step 2.1, the width of the lower two layers casing ply is greater than the width of raw stock, and the edge of two layers of casing ply is by raw stock side
Edge stretches out, and after all raw stocks and wear-resisting raw stock are superimposed, the casing ply fold inward of extension will be above it
The edge wrap of raw stock and another two layers of casing ply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079568.0A CN106837361B (en) | 2017-02-15 | 2017-02-15 | A kind of shield machine shield tail antireflux pressure bladder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079568.0A CN106837361B (en) | 2017-02-15 | 2017-02-15 | A kind of shield machine shield tail antireflux pressure bladder and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN106837361A CN106837361A (en) | 2017-06-13 |
| CN106837361B true CN106837361B (en) | 2019-04-09 |
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| CN110962355B (en) * | 2019-12-27 | 2021-09-21 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Bonding forming method for improving air tightness of shrapnel gas bag |
| CN113446014B (en) * | 2021-08-03 | 2022-05-20 | 中交二航局第三工程有限公司 | Underwater major-diameter shield continuous tunneling construction tool with deformed tail shield and construction method |
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| CN206539344U (en) * | 2017-02-15 | 2017-10-03 | 威海丰泰新材料科技股份有限公司 | A kind of shield machine shield tail antireflux pressure bladder |
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Denomination of invention: The invention relates to an anti backflow sealing air bag at shield tail of shield machine and a manufacturing method thereof Effective date of registration: 20211126 Granted publication date: 20190409 Pledgee: Industrial and Commercial Bank of China Limited Rongcheng sub branch Pledgor: WEIHAI FRIEND NEW MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2021980013427 |
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