CN203879509U - Open shield tunneling machine - Google Patents
Open shield tunneling machine Download PDFInfo
- Publication number
- CN203879509U CN203879509U CN201420211453.4U CN201420211453U CN203879509U CN 203879509 U CN203879509 U CN 203879509U CN 201420211453 U CN201420211453 U CN 201420211453U CN 203879509 U CN203879509 U CN 203879509U
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- Prior art keywords
- shield machine
- opened type
- supporting grid
- grid
- type shield
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Abstract
The utility model discloses an open shield tunneling machine. The open shield tunneling machine comprises a shield body, wherein at least one layer of supporting grids which are connected with the upper wall surface of the shield body are arranged at the front end of the shield body, and each supporting grid is formed by connecting a plurality of partition boards and extends in the axial direction of the shield body. According to the open shield tunneling machine, soil on the upper portion of an excavation surface can be supported through the supporting grids arranged at the front end; when the open shield tunneling machine moves forwards, muck in the supporting grids can be pushed out through soil in front of the muck and then falls down automatically behind the supporting grids, and the process special for clearing muck in the supporting grids is not needed. In this way, the open shield tunneling machine has the advantages that the stability of the excavation surface can be effectively maintained through the arranged supporting grids, the situation that trouble is brought to excavation and soil discharge due to the fact that a lager amount of soil comes into the shield tunneling machine is prevented, it is guaranteed that the excavation efficiency is not affected, the risk of soil collapse can be effectively lowered, and the construction safety of the open shield tunneling machine is improved.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of opened type shield machine.
Background technology
Shield machine is a kind of engineering machinery of tunnel piercing, is widely used in building of subway, railway and highway etc.Shield machine mainly comprises balancing earth-pressure shielding machine, slurry balance shield machine and opened type shield machine.In shield construction, need to be according to the suitable shield machine of the selecting factors such as geological conditions, cost.
When balancing earth-pressure shielding machine and slurry balance shield machine carry out tunnelling, can utilize the advantage of its closed structure, soil pressure and the hydraulic pressure at opposing excavation face place, keep excavation face pressure balance, and under pressure balanced state, carry out that soil excavation, soil quarrel rafting, complete machine advances and the operation such as section of jurisdiction installation, make tunnel once-forming, construction safety is efficient; But these two kinds of shield machines are in sand-pebble layer construction, tool wear is serious, tool changing need to frequently open a position, and this closed shield machine cannot be smoothly by its discharge when in the face of huge ovum gravel or boulder, need to take the little pilot tunnel of hand excavation around to face, the measures such as obstacle stone taking-up to be processed, greatly affect drivage efficiency; In addition, the cost of balancing earth-pressure shielding machine and slurry balance shield machine is higher, and construction cost is large.
Opened type shield machine is provided with baffle plate in its shield body front portion, support the excavation face of upper section, then the excavation face of bottom is excavated, the excavation face of this shield machine is opening-wide state, can efficiently process the obstacle such as ovum gravel, the not bright underground pile foundation of exploration of arbitrary dimension, effectively solve the closed shield machines such as balancing earth-pressure shielding machine and slurry balance shield machine and when in the face of huge ovum gravel, be difficult to the predicament of driving, and opened type shield machine is not subject to the restriction of circular beater plate, its end face can be designed as the shape of any appropriate, as circle, rectangle, the shape of a hoof etc.In addition, compare balancing earth-pressure shielding machine and slurry balance shield machine, the manufacturing cost of opened type shield machine also reduces greatly.
But, because the excavation face of opened type shield machine is opened wide, cannot as earth pressure balance or slurry balance shield machine, keep the pressure balance of excavation face place, being applicable to excavation face has the low or anhydrous various country rock of certain self-stable ability, moisture content, or taking sand, gravel, fixed flour sand, clay and the ovum gravel of diluvial formation as main stratum.If there being water stratum to excavate, need to adopt the measure of dewatering.However, opened type shield machine still runs into unavoidably the poor geological conditions of self-stability in the time excavating construction, as the medium coarse sand stratum through precipitation processing, when serious, can cause face landslide, have a large amount of dregs simultaneously and enter in shield body, gently cause propelling resistance greatly to increase, the amount of being unearthed is excessive, affect efficiency of construction, heavy cause that surface settlement or tunnel cave in, and cause construction safety accident.
Utility model content
In view of this, the utility model proposes a kind of opened type shield machine, it can effectively keep the stable of excavation face, reduces soil body landslide risk, promotes and excavates efficiency of construction and safety.
Particularly, this opened type shield machine comprises shield body, and the front end of described shield body is provided with the supporting grid being connected with the upper wall surface of described shield body, and described supporting grid comprises that at least one deck being connected to form by some dividing plates is along the axially extended grid of described shield body.
Further, described some dividing plates comprise for laterally separating the lateral partitions of described shield body inner space and the longitudinal baffle for shield body inner space described in longitudinal subdivision.
Further, between described some dividing plates, mutually removably connect.
Further, described some dividing plates comprise two-layer lateral partitions.
Further, described supporting grid below is provided with breast boards, and described breast boards rear portion is provided with the first conveying worm.
Further, described breast boards comprises left plate and right plate, and the distance between described left plate and described right plate front end is greater than the distance between both rear ends.
Further, described supporting grid rear is provided with excavating gear, and described excavating gear comprises panoramic table, Connection Block and digging arm, wherein, described panoramic table is arranged on described shield body, and described Connection Block is arranged on described panoramic table, and described digging arm is hinged on described Connection Block.
Further, described Connection Block can be arranged on described panoramic table movably forward and backward.
Further, described digging arm is folding arm structure or telescopic arm structure.
Further, each grid bottom of described supporting grid is provided with openable valve plate;
And/or described supporting grid also comprises for by the rear side dividing plate of supporting grid rear closure, and each grid correspondence of described supporting grid arranges second conveying worm.
Opened type shield machine of the present utility model is by arranging supporting grid at the front end of shield body, supporting grid can be by the processing of excavation face subregion, the soil body of supporting grid below excavation face still can free landing, the soil body of the excavation face part that supporting grid is faced is to landing in supporting grid, supporting grid supports this part of soil body, and then can play support action to the top of excavation face.In the time that opened type shield machine moves forward, the dregs in supporting grid can be released and automatically fall from supporting grid rear by the soil body in front, does without carrying out geotechnique clearly for the dregs in supporting grid specially.Thereby, opened type shield machine of the present utility model can effectively keep the stable of excavation face by supporting grid is set, preventing that the excavation face soil body from pouring in shield machine makes troubles to digging up, ensure to excavate efficiency of construction unaffected, and can effectively reduce the risk that the soil body caves in, promote the safety of opened type shield machine construction.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
The structural representation of the opened type shield machine that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the side structure schematic diagram of the opened type shield machine shown in Fig. 1, for ease of describing, mainly shows supporting grid in this view, has omitted the structures such as digging arm;
Fig. 3 is the plan structure schematic diagram of the opened type shield machine shown in Fig. 1, and for ease of describing, this view mainly shows breast boards and the first spiral conveyer, has omitted the structure such as digging arm and supporting grid;
The structural representation of the another kind of opened type shield machine that Fig. 4 provides for the utility model embodiment.
Description of reference numerals
100-shield body; 110-anterior shield; Shield in 120-; 130-tail shield; 200-supporting grid; 210-lateral partitions; 220-longitudinal baffle; 300 breast boardss; 400-the first conveying worm; 510-digging arm; 520-Connection Block; 530-panoramic table.
Detailed description of the invention
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
The structural representation of the opened type shield machine that Fig. 1 of the present utility model provides for the utility model embodiment; Fig. 2 is the side structure schematic diagram of the opened type shield machine shown in Fig. 1; Fig. 3 is the plan structure schematic diagram of the opened type shield machine shown in Fig. 1; The structural representation of the another kind of opened type shield machine that Fig. 4 provides for the utility model embodiment.
As shown in Figure 1, opened type shield machine of the present utility model comprises shield body 100, the front end of shield body 100 is provided with the supporting grid 200 being connected with the upper wall surface of shield body 100, supporting grid 200 comprises that at least one deck being connected to form by some dividing plates is along the axially extended grid of shield body 100, and supporting grid 200 comprises multiple independently grids.According to front and back topology layout, shield body 100 comprises anterior shield 110, middle shield 120 and tail shield 130, and supporting grid 200 is arranged on the front end of anterior shield 110.
Shown in Fig. 2, the dividing plate of this supporting grid 200 comprises the lateral partitions 210 for laterally separating shield body 100 inner spaces, and for the longitudinal baffle 220 of longitudinal subdivision shield body 100 inner spaces, as preferred embodiment of the present utility model, some dividing plates comprise two-layer lateral partitions 210, be that the inner space that two-layer lateral partitions 210 is separated shield body 100 makes supporting grid 200 have two-grid, wherein upper strata comprises be separated into by longitudinal baffle 220 five independently mesh spaces, lower floor comprises be separated into by longitudinal baffle 220 four independently mesh spaces.Between lateral partitions 210 shown in figure and longitudinal baffle 220, adopt and removably connect, be convenient to mutual assembly and disassembly between lateral partitions 210 and longitudinal baffle 220, and can form as required the supporting grid 200 being formed by the grid of varying number and the number of plies, improve the flexible arrangement of supporting grid 200.
As shown in Figure 2, the cross section of the lateral partitions 210 of every one deck is fold-line-shaped, and it can be removably connected and be formed by polylith dividing plate.Between lateral partitions 210 and shield body 100, preferably adopt and removably connect, be convenient to the assembly and disassembly of supporting grid 200, and promote the flexible arrangement of supporting grid.In other embodiments, lateral partitions 210 can also be horizontal arrangement, and the utility model does not limit this.
In addition, it should be noted that, although in this embodiment between lateral partitions 210 and longitudinal baffle 220, and adopt and removably connect between multiple lateral partitions 210, can promote the flexible arrangement of supporting grid, but, those skilled in the art can understand, more firm in order to be supporting grid, between lateral partitions 210 and longitudinal baffle 220, and can adopt and be welded and fixed connection between multiple lateral partitions 210, or one-body molded making, even between lateral partitions 210, longitudinal baffle 220 and shield body 100, also can adopt to be welded and fixed to be connected.
In the time that traditional opened type shield machine carries out tunnelling work, the soil body of the excavation face of shield machine front end can be to a landing part in shield machine, and at the anterior surely face that forms certainly of shield machine, before the supporting that shield machine front top arranges, eaves is because setting position is too top, the part that can only go up most excavation face supports, if soil body self-stability is poor, a large amount of soil body landings, and can form long certainly steady face, cause a large amount of dregs to pour in to shield body, give to excavate with outside muck haulage work and make troubles, strengthen workload, when serious, also can cause the soil body landslide of excavation face.Opened type shield machine of the present utility model is by arranging supporting grid 200 at the front end of shield body 100, supporting grid 200 can be by the processing of excavation face subregion, the soil body of supporting grid 200 below excavation faces still can free landing, the soil body of the excavation face part that supporting grid 200 is faced is to the interior landing of supporting grid 200, supporting grid 200 supports this part of soil body, and then can play support action to the top of excavation face.In the time that opened type shield machine moves forward, the dregs in supporting grid 200 can be released and automatically fall from supporting grid 200 rears by the soil body in front, does without carrying out geotechnique clearly for the dregs in supporting grid 200 specially.Thereby, opened type shield machine of the present utility model can effectively keep the stable of excavation face by supporting grid is set, preventing that the excavation face soil body from pouring in shield machine makes troubles to digging up, ensure to excavate efficiency of construction unaffected, and can effectively reduce the risk that the soil body caves in, promote the safety of opened type shield machine construction.
Although the supporting grid 200 of opened type shield machine is divided into five, upper strata mesh space in the preferred embodiment, four mesh spaces of lower floor, but those skilled in the art should be understood that, according to the self-stability of the soil body of excavation regions, in other embodiments, supporting grid 200 can be set to one deck or more multi-layered, and the separate mesh grid space of every one deck of supporting grid 200 also can be set to other numbers.
In the specific implementation, as shown in Figures 2 and 3, the below of supporting grid 200 can be provided with breast boards 300, and the rear portion of breast boards 300 can be provided with the first conveying worm 400.Breast boards 300 comprises left plate and right plate, distance between left plate and right plate front end is greater than the distance between both rear ends, be all outward-dipping settings of front end of left plate and right plate, the equal toe-in in rear end of left plate and right plate, and point to the first conveying worm 400, make breast boards 300 entirety be splayed, and make the first conveying worm 400 be positioned at splay rear portion, be convenient to dregs to guide to first conveying worm 400 places at breast boards 300 rear portions.
Referring again to Fig. 1, the rear of supporting grid 200 can be provided with excavating gear, this excavating gear comprises panoramic table 530, Connection Block 520 and digging arm 510, wherein panoramic table 530 is arranged on shield body 100, as shown in the figure, the top of panoramic table 530 is arranged on middle shield 120, and Connection Block 520 is arranged on panoramic table 530 bottoms, Connection Block 520 can turn round with panoramic table 530, and the afterbody of digging arm 510 is hinged on Connection Block 520.Digging arm in this embodiment is folding arm structure, comprises swing arm, dipper and scraper bowl, and as shown in Figure 1, the digging arm in its concrete structure and excavator is similar.In addition, as the preferred version of this embodiment, this Connection Block 520 can also be arranged on panoramic table 530 in the mode that can move forward and backward, for example, and the scheme that this mode moving forward and backward can adopt sliding-rail sliding to match.Thereby digging arm 510 both can be swung up and down by relative Connection Block 520 around hinged place, also can swing with the rotation of panoramic table 530 together with Connection Block 520, can also on panoramic table 530, move forward and backward together with Connection Block 520, can increase like this scope of activities of digging arm 510, reduce the working angle of digging arm.
The opened type shield machine that the utility model above preferred embodiment provides is in the time of excacation, its supporting grid 200 can be at the inner space of the shield body 100 upper support soil body, effectively prevent that the poor soil body of self-stability from, to the inner landing accumulation of shield body, reducing the probability of the soil body or Tunnel Landslide; Its splay breast boards can guide to dregs the first conveying worm, be convenient to dregs to transport, prevent that dregs landing from cannot be transported by conveying worm to the dead angle, both sides of shield body bottom, reduce hand excavation workload, resistance shield machine can also be reduced to a certain extent and push ahead time simultaneously; In excavating gear the connected mode of digging arm make its can be up and down, swing, also can move forward and backward, increase the excavation scope of digging arm, eliminate and excavate dead angle.
Digging arm 510 in above preferred embodiment is folding arm structure, in other embodiments, digging arm 510 also can adopt telescopic arm structure, specifically as shown in Figure 4, digging arm 510 is still identical with above preferred embodiment with the connected mode of shield body 100, ensure digging arm 510 can be up and down, swing and move forward and backward, self concrete structure of telescopic arm can, referring to telescopic arm technology enforcement of the prior art, repeat no more.
Supporting grid 200 in above-described embodiment is front and back pass-through type structures, when dregs wherein mainly leans on opened type shield machine integral forward lead, pressure by the front soil body is released supporting grid 200 by dregs and falls, this fall cubic metre of earth formula can cause some dregs to be deposited in supporting grid 200, therefore, as the preferred scheme of one, can also be in supporting grid 200 bottoms, openable valve plate (not shown) is set in lateral partitions 210, valve plate is closed condition in the time that opened type shield machine is worked usually, supporting grid 200 can support the soil body, in the time that needs fall soil, open the valve plate in lateral partitions 210, thereby can avoid dregs at the interior residual packing of supporting grid 200.
As alternative dispensing means, this supporting grid 200 also comprises the rear side dividing plate (not shown) for supporting grid is sealed, and corresponding each independently mesh space arranges respectively a second small-sized conveying worm (not shown), be specifically designed to the dregs transporting in grid.For this possibility, poor at soil body self-stability, cause the soil body in the length of supporting grid, still cannot form in the time of steady face, its rear side dividing plate can also be used for stopping the soil body, plays support action.In addition, it will be appreciated by persons skilled in the art that above-mentioned two kinds of auxiliary shoring grids native scheme that falls can implement separately, also can combine enforcement.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an opened type shield machine, comprise shield body, it is characterized in that, the front end of described shield body is provided with the supporting grid being connected with the upper wall surface of described shield body, and described supporting grid comprises that at least one deck being connected to form by some dividing plates is along the axially extended grid of described shield body.
2. opened type shield machine according to claim 1, is characterized in that, described some dividing plates comprise for laterally separating the lateral partitions of described shield body inner space and the longitudinal baffle for shield body inner space described in longitudinal subdivision.
3. opened type shield machine according to claim 2, is characterized in that, between described some dividing plates, mutually removably connects or welds.
4. opened type shield machine according to claim 3, is characterized in that, described some dividing plates comprise two-layer lateral partitions.
5. according to the opened type shield machine described in any one in claim 1 to 4, it is characterized in that, described supporting grid below is provided with breast boards, and described breast boards rear portion is provided with the first conveying worm.
6. opened type shield machine according to claim 5, is characterized in that, described breast boards comprises left plate and right plate, and the distance between described left plate and described right plate front end is greater than the distance between both rear ends.
7. according to the opened type shield machine described in any one in claim 1 to 4, it is characterized in that, described supporting grid rear is provided with excavating gear, described excavating gear comprises panoramic table, Connection Block and digging arm, wherein, described panoramic table is arranged on described shield body, and described Connection Block is arranged on described panoramic table, and described digging arm is hinged on described Connection Block.
8. opened type shield machine according to claim 7, is characterized in that, described Connection Block can be arranged on described panoramic table movably forward and backward.
9. opened type shield machine according to claim 7, is characterized in that, described digging arm is folding arm structure or telescopic arm structure.
10. according to the opened type shield machine described in any one in claim 1 to 4, it is characterized in that,
Each grid bottom of described supporting grid is provided with openable valve plate;
And/or described supporting grid also comprises for by the rear side dividing plate of supporting grid rear closure, and each grid correspondence of described supporting grid arranges second conveying worm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211453.4U CN203879509U (en) | 2014-04-28 | 2014-04-28 | Open shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211453.4U CN203879509U (en) | 2014-04-28 | 2014-04-28 | Open shield tunneling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879509U true CN203879509U (en) | 2014-10-15 |
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ID=51680018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420211453.4U Withdrawn - After Issue CN203879509U (en) | 2014-04-28 | 2014-04-28 | Open shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953354A (en) * | 2014-04-28 | 2014-07-30 | 北京市三一重机有限公司 | Open type shield machine |
-
2014
- 2014-04-28 CN CN201420211453.4U patent/CN203879509U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953354A (en) * | 2014-04-28 | 2014-07-30 | 北京市三一重机有限公司 | Open type shield machine |
| CN103953354B (en) * | 2014-04-28 | 2016-10-05 | 北京市三一重机有限公司 | Opened type shield machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141015 Effective date of abandoning: 20161005 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |