CN103711497B - Prevent the device that rectangular shield machine shield tail is out of shape further - Google Patents
Prevent the device that rectangular shield machine shield tail is out of shape further Download PDFInfo
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- CN103711497B CN103711497B CN201310745993.0A CN201310745993A CN103711497B CN 103711497 B CN103711497 B CN 103711497B CN 201310745993 A CN201310745993 A CN 201310745993A CN 103711497 B CN103711497 B CN 103711497B
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- shield tail
- elastic wear
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- resisting plate
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Abstract
The invention provides a kind of device preventing rectangular shield machine shield tail to be out of shape further, comprise elastic wear-resisting plate and junction steel plate, described elastic wear-resisting plate is connected with the inwall of shield tail housing by described junction steel plate.The present invention passes through the introducing of elastic wear-resisting plate and junction steel plate, the distortion of shield tail is reduced by a kind of simple and reliable mode adding fulcrum, the quantity of elastic wear-resisting plate of the present invention can be several, be arranged on shield tail surrounding, in shield machine tunneling process, owing to being subject to soil pressure effect, shield tail deforms, namely shield tail is toward shield machine interior curve, after distortion acquires a certain degree, elastic wear-resisting plate touches section of jurisdiction, section of jurisdiction is equivalent to provide elastic wear-resisting plate and supports, the pressure that elastic wear-resisting plate is subject to is larger, the reaction force that section of jurisdiction provides is larger, this reaction force just can reduce the distortion of shield tail effectively.
Description
Technical field
The present invention relates to the improvement to rectangular shield machine, particularly relate to a kind of device preventing rectangular shield machine shield tail to be out of shape further.
Background technology
Shield machine is in tunnel excavating process, and due to the effect of soil pressure, distortion in various degree all can occur shield tail.For circular shield, due to round under the effect of surrounding soil pressure, the distortion of shield tail is less, generally without the need to considering shield tail problem on deformation specially.
But for rectangular shield, particularly big cross section large span rectangular shield, when being subject to surrounding soil pressure, the shield tail distortion of rectangular shield needs to consider emphatically.The distortion of shield tail can bring significant damage for whole construction, is out of shape conference and causes tail sealing to lose efficacy, and shield tail leaks spillage, have impact on shield driving, adds construction cost; When being out of shape serious, section of jurisdiction can be caused to be in place, construction just cannot proceed, and causes huge economic loss.For the method that the shield tail resistance to deformation of big cross section rectangular shield adopts, be generally the thickness of slab strengthening shield machine housing, thickening plate is limited for unbending, and steel plate deadweight simultaneously can produce distortion, and consider economy and technological factor, thickness of slab can not unrestrictedly add; Another kind is the method for housing arching, as shown in Figure 1, rectangular shield is made to become ellipse shield structure, arch has good help for bending resistance, after but rectangle span reaches certain distance, the effect of arch camber is just more and more not obvious, and continues to increase springing height, makes cross section, rectangle shield face advantage no longer obvious.
Summary of the invention
How effectively the technical problem to be solved in the present invention is the distortion of control rectangle shield machine shield tail.
In order to solve this technical problem, the invention provides a kind of device preventing rectangular shield machine shield tail to be out of shape further, comprising elastic wear-resisting plate and junction steel plate, described elastic wear-resisting plate is connected with the inwall of shield tail housing by described junction steel plate.
When shield tail housing does not deform, between the section of jurisdiction in described elastic wear-resisting plate and shield tail, be provided with gap.
The intensity of described elastic wear-resisting plate is less than the section of jurisdiction in shield tail.
The material of described elastic wear-resisting plate is polytetrafluoroethylene (PTFE).
Described junction steel plate is fixedly welded on the inwall of described shield tail housing, and described elastic wear-resisting plate is fixed by screws on described junction steel plate.
The present invention passes through the introducing of elastic wear-resisting plate and junction steel plate, reduce the distortion of shield tail by a kind of simple and reliable mode adding fulcrum, the quantity of elastic wear-resisting plate of the present invention can be several, is arranged on shield tail surrounding, in shield machine tunneling process, owing to being subject to soil pressure effect, shield tail deforms, and namely shield tail is toward shield machine interior curve, elastic wear-resisting plate is arranged on housing, when shield tail is out of shape, it is curved inward that shield tail followed by elastic wear-resisting plate, and distortion is to a certain degree allowed in engineering.After distortion acquires a certain degree, elastic wear-resisting plate touches section of jurisdiction, and section of jurisdiction is equivalent to provide elastic wear-resisting plate and supports, and elastic wear-resisting plate pressure is larger, and the reaction force that section of jurisdiction provides is larger, and reaction force has just resisted the distortion of shield tail.
Accompanying drawing explanation
Fig. 1 is the structural representation that in prior art, rectangular shield machine shield tail adopts for anti-deformation;
Fig. 2 is the position view of the device preventing rectangular shield machine shield tail to be out of shape further that one embodiment of the invention provides;
Fig. 3 is the generalized section of shield tail in one embodiment of the invention;
Fig. 4 is the enlarged diagram of A-A structure in Fig. 3;
The enlarged diagram of A-A structure when Fig. 5 is the distortion of shield tail;
Fig. 6 is the generalized section of the device preventing rectangular shield machine shield tail to be out of shape further in one embodiment of the invention;
Fig. 7 is the side structural representation of the device preventing rectangular shield machine shield tail to be out of shape further in one embodiment of the invention;
In figure, 1-elastic wear-resisting plate; 2-shield tail housing; 3-section of jurisdiction; 4-wire brush; 5-junction steel plate; 6-screw.
Detailed description of the invention
Below with reference to Fig. 2 to Fig. 6, the device preventing rectangular shield machine shield tail to be out of shape further provided by the invention is described in detail, it is the present invention one optional embodiment, can think that those skilled in the art can modify to it and polish in the scope not changing the present invention's spirit and content.
Please refer to Fig. 4 to Fig. 7, and composition graphs 2 and Fig. 3, present embodiments provide a kind of device preventing rectangular shield machine shield tail to be out of shape further, comprise elastic wear-resisting plate 1 and junction steel plate 5, described elastic wear-resisting plate 1 is connected with the inwall of shield tail housing 2 by described junction steel plate 5.Specifically, described junction steel plate 5 is fixedly welded on the inwall of described shield tail housing 2, and described elastic wear-resisting plate 1 is fixed on described junction steel plate 5 by screw 6.Some described elastic wear-resisting plates 1 and junction steel plate 5 are arranged around the section of jurisdiction 3 in shield tail, its concrete arrangement mode can obtain with simulation by calculating, the present embodiment is not specifically limited, those skilled in the art, after knowing this area common technology means and content of the present invention and spirit, all can obtain some arrangement modes and obtain the means of arrangement mode.
The intensity of described elastic wear-resisting plate 1 is less than the section of jurisdiction 3 in shield tail.The material of described elastic wear-resisting plate 1 is polytetrafluoroethylene (PTFE).When surrounding soil pressure is excessive, when elastic wear-resisting plate 1 can not bear the pressure with section of jurisdiction 3, elastic wear-resisting plate 1 strength ratio section of jurisdiction is low, then can not destroy section of jurisdiction 3.In the present embodiment, because elastic wear-resisting plate 1 adopts this high-abrasive material of polytetrafluoroethylene (PTFE), in shield machine advance process, can ensure that described elastic wear-resisting plate 1 can not reduce resistance to deformation effect and damage because of the friction with section of jurisdiction 3.It should be noted that; when shield machine shield form of structure, tunnel segment structure form and execution conditions are determined; the size range of shield tail distortion; the amount of force that elastic wear-resisting plate 1 is subject in deformation process and the amount of force that section of jurisdiction 3 is subject to; all need through repeatedly calculating demonstration; the present embodiment is not described in detail the method calculated; should think; no matter adopt the calculating Demonstration Method which kind of is concrete; as long as have employed the shield tail anti-deformation device that the present embodiment provides, it just belongs to the present invention and makes every effort to one of technical scheme protected.
Please refer to Fig. 4, when shield tail housing does not deform, between the section of jurisdiction 3 in described elastic wear-resisting plate 1 and shield tail, be provided with gap.After distortion acquires a certain degree, please refer to Fig. 5 elastic wear-resisting plate 1 and touch section of jurisdiction 3, section of jurisdiction 3 is equivalent to provide elastic wear-resisting plate 1 and supports, and elastic wear-resisting plate 1 pressure is larger, the reaction force that section of jurisdiction 3 provides is larger, and reaction force has just resisted the distortion of shield tail housing 2.
In addition, please refer to Fig. 3 and Fig. 4, the inwall of described shield tail housing 2 is fixed with some wire brushes 4.Wherein, the both sides, front and back of each described elastic wear-resisting plate 1 are equipped with a wire brush 4.
In sum, the present invention passes through the introducing of elastic wear-resisting plate and junction steel plate, and reduce the distortion of shield tail by a kind of simple and reliable mode adding fulcrum, the quantity of elastic wear-resisting plate of the present invention can be several, be arranged on shield tail surrounding, in shield machine tunneling process, owing to being subject to soil pressure effect, shield tail deforms, namely shield tail is toward shield machine interior curve, elastic wear-resisting plate is arranged on housing, and when shield tail is out of shape, it is curved inward that shield tail followed by elastic wear-resisting plate.After distortion acquires a certain degree, elastic wear-resisting plate touches section of jurisdiction, and section of jurisdiction is equivalent to provide elastic wear-resisting plate and supports, and elastic wear-resisting plate pressure is larger, and the reaction force that section of jurisdiction provides is larger, and reaction force has just resisted the distortion of shield tail.The particularly rectangular shield machine of large span, several fulcrums greatly reduce the distortion of shield tail housing, thus ensure the rigidity of shield tail.If pressure durations increases, first elastic wear-resisting plate damages, and can not destroy section of jurisdiction and shield tail housing.In addition, package unit is without the need to operative in shield machine progradation, and Maintenance free maintains, and accomplishes safe and reliable laborsaving.
Claims (5)
1. the device preventing rectangular shield machine shield tail to be out of shape further, is characterized in that: comprise some elastic wear-resisting plates and junction steel plate, and described elastic wear-resisting plate is connected with the inwall of shield tail housing by described junction steel plate.
2. the device preventing rectangular shield machine shield tail to be out of shape further as claimed in claim 1, is characterized in that: when shield tail housing does not deform, and is provided with gap between the section of jurisdiction in described elastic wear-resisting plate and shield tail.
3. the device preventing rectangular shield machine shield tail to be out of shape further as claimed in claim 1, is characterized in that: the intensity of described elastic wear-resisting plate is less than the intensity of the section of jurisdiction in shield tail.
4. the device preventing rectangular shield machine shield tail to be out of shape further as claimed in claim 3, is characterized in that: the material of described elastic wear-resisting plate is polytetrafluoroethylene (PTFE).
5. the device preventing rectangular shield machine shield tail to be out of shape further as claimed in claim 1, is characterized in that: described junction steel plate is fixedly welded on the inwall of described shield tail housing, and described elastic wear-resisting plate is fixed by screws on described junction steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745993.0A CN103711497B (en) | 2013-12-30 | 2013-12-30 | Prevent the device that rectangular shield machine shield tail is out of shape further |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745993.0A CN103711497B (en) | 2013-12-30 | 2013-12-30 | Prevent the device that rectangular shield machine shield tail is out of shape further |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103711497A CN103711497A (en) | 2014-04-09 |
| CN103711497B true CN103711497B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310745993.0A Active CN103711497B (en) | 2013-12-30 | 2013-12-30 | Prevent the device that rectangular shield machine shield tail is out of shape further |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993886B (en) * | 2014-04-18 | 2017-01-18 | 武汉船用机械有限责任公司 | Sealing device for shield tunneling machine and shield tunneling machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251015A (en) * | 2008-04-02 | 2008-08-27 | 上海隧道工程股份有限公司 | Construction method for exchanging shield ventral brush |
| CN201843623U (en) * | 2010-11-03 | 2011-05-25 | 上海盾构设计试验研究中心有限公司 | Sealing and guiding device of synchronous grouting simulation test platform for shield machine |
| CN203685194U (en) * | 2013-12-30 | 2014-07-02 | 上海市机械施工集团有限公司 | Shield tail support point structure of rectangular shield tunneling machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266796A (en) * | 1997-03-27 | 1998-10-06 | Copurosu:Kk | Supporting construction method in shield tunneling method and construction apparatus used therefor |
| JP2012120987A (en) * | 2010-12-09 | 2012-06-28 | Maeda Corp | Method for purifying excavated soil when shield construction is performed in contaminated soil and shield excavator |
-
2013
- 2013-12-30 CN CN201310745993.0A patent/CN103711497B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251015A (en) * | 2008-04-02 | 2008-08-27 | 上海隧道工程股份有限公司 | Construction method for exchanging shield ventral brush |
| CN201843623U (en) * | 2010-11-03 | 2011-05-25 | 上海盾构设计试验研究中心有限公司 | Sealing and guiding device of synchronous grouting simulation test platform for shield machine |
| CN203685194U (en) * | 2013-12-30 | 2014-07-02 | 上海市机械施工集团有限公司 | Shield tail support point structure of rectangular shield tunneling machine |
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| Publication number | Publication date |
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| CN103711497A (en) | 2014-04-09 |
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