CN204941549U - Shield machine tail shield - Google Patents
Shield machine tail shield Download PDFInfo
- Publication number
- CN204941549U CN204941549U CN201520658067.4U CN201520658067U CN204941549U CN 204941549 U CN204941549 U CN 204941549U CN 201520658067 U CN201520658067 U CN 201520658067U CN 204941549 U CN204941549 U CN 204941549U
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- CN
- China
- Prior art keywords
- shield
- tail
- sealing
- housing
- ventral brush
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lining And Supports For Tunnels (AREA)
Abstract
This patent application discloses a kind of shield machine tail shield, relate to heading equipment, comprise the tail sealing structure being arranged on shield tail, it is characterized in that, this tail sealing structure grouting plate and ventral brush sealing, this grouting plate is spring steel plate bundle, the sealing of this ventral brush is made up of three row's sealing brushes be welded on housing, the ventral brush closed chamber that three row's sealing brush group formation two are annular, and each ventral brush closed chamber is communicated with 6-8 root oil grease tube, sealing indoor are full of grease, have good sealing at work to shield deck store.
Description
Technical field
The utility model relates to heading equipment, particularly relates to shield machine tail shield.
Background technology
Shield machine, entirely be named as shielding tunnel excavator, a kind of special engineering machinery of tunnel piercing, modern shield excavation machine integrates light, mechanical, electrical, liquid, sensing, information technology, there is excavation cut the soil body, conveying soil quarrel, assembled tunnel lining, measure the functions such as guiding correction, relate to geology, building, machinery, mechanics, hydraulic pressure, electrically, control, the multi-door subject technology such as measurement, and manufacturing and designing of " cutting the garment according to the figure " formula to be carried out according to different geology, reliability requirement is high.
Shield machine is primarily of nine major part compositions, and they are shield body, cutter plate driver, two rooms air-lock, duct piece assembling machine, casting mechanism, rear corollary apparatus, electrical system and auxiliary equipment respectively.Wherein shield body mainly comprises anterior shield, middle shield and tail shield three part, this three part is all that tubulose is simplified, and anterior shield, middle shield and tail shield set gradually, and shield tail is provided with hermetically-sealed construction, usual hermetically-sealed construction circularizes ventral brush closed chamber, then at sealed interior injection grease by sealing scopiform.Shield machine, in extra long distance tunneling process, enters in the ventral brush closed chamber of shield structure by having from extraneous materials such as earth slurries and grouting serous fluids, the grease in displacement ventral brush closed chamber.Shield structure is occurred after long distance driving, and ventral brush closed chamber pressurize effect is undesirable, shield tail alters the series of problems such as slurry and the damage of shield ventral brush.And because the distance between synchronous grouting hole and shield deck store is very near; due to the change of attitude in shield driving; generation gap of the shield tail is poor; certainly having slurries enters in shield deck store; displace grease; solid after solidifying just become in driving " grinding stone " all the time frictional force is produced to shield ventral brush, make the protection of shield tail there is very large risk.In the middle of construction, shield tail may deform, and at curved section driving, shield tail space may not be waited.When the distortion of shield tail or tuning, even if shield tail space reaches the twice of design load, tail sealing also must can sustain grouting pressure and groundwater pressure.
Utility model content
The utility model provides a kind of shield machine tail shield can at work with excellent sealing.
This programme is as follows: comprise the tail sealing structure being arranged on shield tail, this tail sealing structure grouting plate and ventral brush sealing, this grouting plate is spring steel plate bundle, the sealing of this ventral brush is made up of three row's sealing brushes be welded on housing, the ventral brush closed chamber that three row's sealing brush group formation two are annular, each ventral brush closed chamber is communicated with 6-8 root oil grease tube, and sealing indoor are full of grease.
This programme operating principle is as follows: it is anterior that grouting plate can prevent filled with mortar from arriving shield body, also the mud influence slip casting effect of shield body front portion can be prevented, grouting plate adopts spring steel plate can ensure that tail sealing must have good elasticity, grouting pressure and groundwater pressure can be sustained, ventral brush sealing is made up of three row's sealing brushes be welded on housing, prevent injecting paste material and water from leaking into shield body inner, keep the effect of its pressure separately when earth pressure balance in addition.Three row's sealing brush group formation, two annular spaces, centre is full of grease always, and the grease pump that the flow put by standby is adjustable injects, and each annular space is injected by oil grease tube, can bear more than 6Bar operating pressure.
Technique effect: can form excellent sealing effect to shield deck store, ventral brush sealing simultaneously can bear enough operating pressures.Ensure normally carrying out of construction.
Further, comprise housing and Grouting Pipe, described Grouting Pipe is axially uniform is embedded in shield tail housing, and each shield tail housing is provided with two observation ports, and described oil grease tube is also axially uniform is embedded in shield tail housing, and this oil grease tube leads to ventral brush closed chamber.Grouting Pipe and oil grease tube are embedded in housing, make compact overall structure, Grouting Pipe and oil grease tube is uniform is arranged on shield tail housing, slip casting and grease conveying can be made evenly, the setting of observation port is beneficial to cleans slip casting block, overhauls.
Further, described Grouting Pipe has 8-11 root, wherein 5-7 root Grouting Pipe for subsequent use, provides enough pipeline slip casting, simultaneously when Grouting Pipe has partial destruction, can have for subsequent use Grouting Pipe substituting infringement in time.
Further, comprise section of jurisdiction, this section of jurisdiction and body clearance 27-31mm, for installation section of jurisdiction and tuning provide enough spaces.
Further, tail shield housing is designed with 8-11 place main frame and retreats frock hole, when needs tool changing, anchor pole can be squeezed into, temporary fixed tail shield by this hole to radial bore, drag main frame by hinged oil cylinder and retreat and obtain hobboing cutter and change space, change cutter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model shield machine tail shield embodiment.
Detailed description of the invention
Below by detailed description of the invention, the utility model shield machine tail shield is described in further detail:
Reference numeral in Figure of description comprises: tail shield 1, Grouting Pipe 2, oil grease tube 3, sealing brush 4, ventral brush closed chamber 5, section of jurisdiction 6.
Embodiment is substantially as follows:
Tail shield 1 is made up of tail sealing structure and housing, diameter of the housing Φ 6830mm, tail shield 1 length 3890mm, thickness of shell 50mm, adopts Q345B plate.
The gap 30mm of tail shield 1 housing and section of jurisdiction 6.Meet and section of jurisdiction 6 and tuning requirement are installed.Tail shield 1 afterbody forms tail sealing structure by row's grouting plate and sealing brush 4.This grouting plate is made up of wearable elastic steel plate, has good elasticity, tail shield 1 be out of shape or tuning time, grouting pressure and groundwater pressure can be sustained, prevent filled with mortar from arriving shield body anterior, also can prevent the mud influence slip casting effect of shield body front portion.
All Grouting Pipe 2 and oil grease tube 3 tunnel are all embedded.Every two Grouting Pipe 2 are a slip casting block, and slip casting block is all embedded in tail shield housing, and each Grouting Pipe 2 is provided with two observation ports, are beneficial to cleaning, maintenance.Grouting Pipe 2 totally 10, wherein 6 for subsequent use.Oil grease tube 3 is all embedded in tail shield 1 housing, and oil grease tube 3 totally 14, leads to two ventral brush closed chambers 5.
Ventral brush sealing is made up of three row's sealing brushes 4 be welded on housing, prevents injecting paste material and water from leaking into shield body inner, keeps the effect of its pressure separately when earth pressure balance in addition.Three row's sealing 4 groups, brushes form two annular spaces, i.e. ventral brush closed chamber 5, and centre is full of grease always, and the grease pump that the flow put by standby is adjustable injects, and each annular space is respectively injected by 7 oil grease tubes 3.More than 6Bar operating pressure can be born.
Tail shield 1 housing is designed with 10 place main frames and retreats frock holes, when needs tool changing, anchor pole can be squeezed into, temporary fixed tail shield 1 by this hole to radial bore, drag main frame by hinged oil cylinder and retreat and obtain hobboing cutter and change space, change cutter.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in manual etc. record the content that may be used for explaining claim.
Claims (5)
1. shield machine tail shield, comprise the tail sealing structure being arranged on shield tail, it is characterized in that, this tail sealing structure grouting plate and ventral brush sealing, this grouting plate is spring steel plate bundle, and the sealing of this ventral brush is made up of three row's sealing brushes be welded on housing, the ventral brush closed chamber that three row's sealing brush group formation two are annular, each ventral brush closed chamber is communicated with 6-8 root oil grease tube, and sealing indoor are full of grease.
2. shield machine tail shield according to claim 1, is characterized in that, comprise housing and Grouting Pipe, described Grouting Pipe is axially uniform is embedded in shield tail housing, each shield tail housing is provided with two observation ports, and described oil grease tube is also axially uniform is embedded in shield tail housing, and this oil grease tube leads to ventral brush closed chamber.
3. shield machine tail shield according to claim 2, it is characterized in that, described Grouting Pipe has 8-11 root, wherein 5-7 root Grouting Pipe for subsequent use.
4. shield machine tail shield according to claim 2, is characterized in that, comprise section of jurisdiction, this section of jurisdiction and body clearance 27-31mm.
5. shield machine tail shield according to claim 2, is characterized in that, tail shield housing is designed with 8-11 place main frame and retreats frock hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658067.4U CN204941549U (en) | 2015-08-28 | 2015-08-28 | Shield machine tail shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658067.4U CN204941549U (en) | 2015-08-28 | 2015-08-28 | Shield machine tail shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941549U true CN204941549U (en) | 2016-01-06 |
Family
ID=55008989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520658067.4U Expired - Fee Related CN204941549U (en) | 2015-08-28 | 2015-08-28 | Shield machine tail shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985014A (en) * | 2019-12-10 | 2020-04-10 | 中铁十四局集团隧道工程有限公司 | Method for preventing shield tail leakage |
-
2015
- 2015-08-28 CN CN201520658067.4U patent/CN204941549U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985014A (en) * | 2019-12-10 | 2020-04-10 | 中铁十四局集团隧道工程有限公司 | Method for preventing shield tail leakage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160828 |