CN106930771B - Circumference supporting shoe device for small-diameter full-section hard rock tunnel boring machine - Google Patents
Circumference supporting shoe device for small-diameter full-section hard rock tunnel boring machine Download PDFInfo
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- CN106930771B CN106930771B CN201710207165.XA CN201710207165A CN106930771B CN 106930771 B CN106930771 B CN 106930771B CN 201710207165 A CN201710207165 A CN 201710207165A CN 106930771 B CN106930771 B CN 106930771B
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- 239000011435 rock Substances 0.000 title claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 4
- 230000005641 tunneling Effects 0.000 abstract description 11
- 230000001965 increasing effect Effects 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- E21D9/0621—Shield advancing devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a circumferential shoe supporting device for a small-diameter full-section hard rock tunnel boring machine, which is used for supporting the periphery of surrounding rocks during shield tunneling and is provided with a cylindrical shell, the peripheral wall of the shell is uniformly provided with at least six shoe supporting devices capable of extending out of or retracting into the outer wall of the shell, a hydraulic jack corresponding to each shoe supporting device is arranged in the shell, a connecting rod with a force boosting effect is arranged between each shoe supporting device and a jack piston rod, and two ends of each connecting rod are respectively in spherical hinge joint with the shoe supporting device and the piston rod of the jack. According to the invention, the plurality of supporting shoes are uniformly distributed in the circumferential direction of the shell, so that the number of the supporting shoes is increased, the stress between the supporting shoes and the surrounding rock is uniformly dispersed on the premise of reducing the structural size of the system, the total contact area is large, and the stability is improved; the connection of all parts adopts a spherical hinge mode, the influence of unbalance loading is small, and the jack is not easy to be unstable; by adopting the connecting rod force-increasing mechanism, the pressure between the supporting shoes and the surrounding rock can be increased, thereby achieving the purpose of improving the frictional resistance and the tunneling efficiency of the tunneling machine.
Description
Technical Field
The invention relates to a circumferential shoe supporting device for a small-diameter full-section hard rock tunnel boring machine applied to a coal mine tunnel.
Background
At present, a hard rock Tunnel Boring Machine (TBM) is widely applied to projects such as water conservancy and hydropower projects, traffic projects, municipal projects and the like, and the diameter of the related hard rock tunnel boring machine is larger and is generally more than 5 meters; and the full-section hard rock roadway tunneling of the coal mine engineering basically adopts the traditional drilling and blasting method for construction, so that the construction efficiency is low, the labor intensity is high, and the risk is high. Therefore, the coal mine tunnel is comprehensively considered from the aspects of economy, efficiency, safety, well descending and transition of the hard rock heading machine and the like, and the coal mine tunnel is required to be small in diameter, and the diameter is generally less than 3 meters. Because strong propelling force is needed to ensure normal propelling of the hard rock tunnel boring machine, the traditional mode is that two horizontally symmetrical supporting shoes are supported on surrounding rocks to provide frictional resistance, but the structure has the following defects: firstly, the overall dimension is large, the method can hardly be realized in a heading machine with the diameter of less than 4.5 meters (the provided friction resistance is difficult to meet the propelling requirement during heading), and the method is limited by the dimension of a shaft cage and needs to be driven into a well in blocks for transition and installation; secondly, the area of a single shoe support is large, the stress is uneven, and the surface of the shoe support is easy to deform and damage; finally, the shoe supporting jack is greatly biased and easy to be unstable.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the circumferential shoe supporting device for the small-diameter full-section hard rock tunnel boring machine can overcome the defects in the prior art, increase the frictional resistance between the shoe supporting device and surrounding rocks and improve the supporting stability.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an used circumference of full section hard rock tunnel boring machine of minor diameter props boots device for support around the country rock when the shield constructs the tunnelling, have cylindric casing, casing perisporium equipartition have six at least can stretch out or retract the boots that prop of casing outer wall, install the fluid pressure type jack that corresponds every and prop the boots in the casing, prop and be provided with the connecting rod that has the reinforcement effect between boots and the jack piston rod, the connecting rod both ends respectively with prop the spherical articulated piston rod of boots and jack.
Furthermore, ten supporting shoes are uniformly distributed on the peripheral wall of the shell, each supporting shoe comprises a supporting part and a connecting part which are of an integrated structure, an opening for accommodating the supporting part to stretch is formed in the peripheral wall of the shell corresponding to the position of the supporting shoe, and the connecting part of the supporting shoe is in spherical hinge joint with the connecting rod through a spherical sliding bearing.
Specifically speaking, the connecting rod include that integrated structure is drive lever and driven lever that L shape meets mutually, drive lever length is greater than driven lever length, the piston rod of drive lever front end and jack passes through spherical plain bearing spherical hinge, the connecting portion of driven lever rear end and vaulting boot pass through spherical plain bearing spherical hinge, drive lever rear end and driven lever front end junction pass through spherical plain bearing spherical hinge with the fixing base of fixing on shells inner wall.
And guide plates for guiding the expansion of the supporting shoes are respectively fixed on two sides of the opening in the shell.
The invention has the beneficial effects that: according to the invention, the plurality of supporting shoes are uniformly distributed in the circumferential direction of the shell, so that the number of the supporting shoes is increased, the stress between the supporting shoes and the surrounding rock is uniformly dispersed, the total contact area is large, and the stability is improved; the connection of all parts adopts a spherical hinge mode, the influence of unbalance loading is small, and the jack is not easy to be unstable; by adopting the connecting rod force-increasing mechanism, the pressure between the supporting shoes and the surrounding rock can be increased, thereby achieving the purpose of improving the frictional resistance and the tunneling efficiency of the tunneling machine.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic view of the state when the shoe is extended.
Fig. 4 is a schematic view of the state when the shoe is retracted.
In the figure, 1, a shell 1-1, an opening 2, a supporting shoe 2-1, a supporting part 2-2, a connecting part 3, a jack 4, a connecting rod 4-1, a driving rod 4-2, a driven rod 5, a fixed seat 6 and a guide plate are arranged in sequence
Detailed Description
The invention will now be further described with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The circumferential shoe supporting device for the small-diameter full-face hard rock tunnel boring machine is used for ensuring that the boring machine is stably supported around surrounding rocks during shield boring operation and is provided with a cylindrical shell 1, ten supporting shoes 2 capable of extending out of or retracting into the outer wall of the shell 1 are uniformly distributed on the circumferential wall of the shell 1 in the circumferential direction, hydraulic jacks 3 corresponding to the supporting shoes 2 are installed in the shell 1, and the jacks 3 are controlled to operate by respective hydraulic systems. A connecting rod 4 with a boosting effect is arranged between the supporting shoe 2 and a piston rod at the front end of the jack 3, two ends of the connecting rod 4 are respectively in spherical hinge joint with the supporting shoe 2 and the piston rod of the jack 3, and the fixed end at the rear part of the jack 3 is in spherical hinge joint with a fixed block fixed in the shell 1 through a spherical sliding bearing.
In terms of specific structure, the supporting shoe 2 comprises a supporting part 2-1 and a connecting part 2-2 which are integrated, an opening 1-1 for accommodating the supporting part 2-1 to stretch is formed in the peripheral wall of the shell 1 corresponding to the position of the supporting shoe 2, and guide plates 6 for guiding the supporting part 2-1 of the supporting shoe 2 to stretch are respectively fixed at two sides of the opening 1-1 in the shell 1; the connecting rod 4 comprises a driving rod 4-1 and a driven rod 4-2 which are connected in an L-shaped manner in an integrated structure, the length of the driving rod 4-1 is greater than that of the driven rod 4-2 so as to achieve a force increasing effect, the front end of the driving rod 4-1 is spherically hinged with a piston rod of the jack 3 through a spherical sliding bearing, the rear end of the driven rod 4-2 is spherically hinged with a connecting part 2-2 of the supporting shoe 2 through the spherical sliding bearing, and the joint of the rear end of the driving rod 4-1 and the front end of the driven rod 4-2 (namely the corner of the connecting rod 4) is spherically hinged with a fixing seat 5 fixed on the inner wall of the shell 1.
In the operation process, a piston rod of a jack 3 is driven to extend out under the action of high-pressure hydraulic oil, the acting force of the jack 3 is transmitted to a supporting shoe 2 through a spherical sliding bearing at a hinged part and is driven by a connecting rod 4 to be linked together, under the pushing of the jack 3, a supporting part 2-1 of the supporting shoe 2 is guided by a guide plate 6 in an auxiliary way to extend out of the peripheral wall of a shell 1 from an opening 1-1 and is supported on the inner wall of surrounding rocks to provide continuous and stable positive pressure, so that the necessary friction resistance for operation during tunneling is provided when the tunneling machine moves forwards; after the operation is finished, the piston rod of the jack 3 retracts, and the connecting rod 4 drives the supporting shoe 3 to retract into the shell 1.
The number of the supporting shoes 2 circumferentially distributed on the casing is not limited to ten in the embodiment, and the number needs to be adjusted and confirmed according to the caliber of the surrounding rock and geological conditions of specific construction. Meanwhile, each supporting shoe 2 is controlled by a respective independent hydraulic system, and each supporting shoe 2 can independently act and can also be linked with other supporting shoes 2 so as to meet the requirement of the gap between the shield body and the surrounding rock of the heading machine in the heading process.
The invention is suitable for the tunneling construction of a hard rock tunnel with a small diameter, and the quantity of the supporting shoes 2 is increased by uniformly distributing a plurality of supporting shoes 2 in the circumferential direction of the shell 1, so that the stress between the supporting shoes 2 and the surrounding rock is uniformly dispersed, the structural sizes of a single supporting shoe 2 and the whole system are reduced, the total contact area between the supporting shoe and the surrounding rock is large, and the stability is improved; the connection of each part adopts a spherical hinge mode, the influence of unbalance loading is small, and the jack 3 is not easy to be unstable; the connecting rod 4 force-increasing mechanism is adopted to push the supporting shoes 2 to stretch, so that the pressure between the supporting shoes 2 and the surrounding rock can be increased, and the aims of improving the frictional resistance and the tunneling efficiency of the tunneling machine are fulfilled.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (3)
1. The utility model provides an used circumference of full section hard rock tunnel boring machine of minor diameter props boots device for support when the shield constructs the tunnelling around the country rock, have cylindric casing (1), characterized by: at least six supporting shoes (2) capable of extending out of or retracting into the outer wall of the shell (1) are uniformly distributed on the peripheral wall of the shell (1), a hydraulic jack (3) corresponding to each supporting shoe (2) is installed in the shell (1), a connecting rod (4) with a force boosting effect is arranged between each supporting shoe (2) and a piston rod of each jack (3), and two ends of each connecting rod (4) are respectively in spherical hinge joint with the supporting shoes (2) and the piston rods of the jacks (3); the connecting rod (4) comprises a driving rod (4-1) and a driven rod (4-2) which are L-shaped and connected in an integrated structure, the length of the driving rod (4-1) is larger than that of the driven rod (4-2), the front end of the driving rod (4-1) is spherically hinged with a piston rod of the jack (3) through a spherical sliding bearing, the rear end of the driven rod (4-2) is spherically hinged with a connecting part (2-2) of the supporting shoe (2) through the spherical sliding bearing, and the joint of the rear end of the driving rod (4-1) and the front end of the driven rod (4-2) is spherically hinged with a fixing seat (5) fixed on the inner wall of the shell (1) through the spherical sliding bearing.
2. The circumferential shoe device for a small-diameter full-face hard rock tunnel boring machine according to claim 1, wherein: the novel shoe stretcher is characterized in that ten supporting shoes (2) are uniformly distributed on the peripheral wall of the shell (1), each supporting shoe (2) comprises a supporting portion (2-1) and a connecting portion (2-2) which are of an integrated structure, an opening (1-1) for accommodating the supporting portion (2-1) in a telescopic mode is formed in the peripheral wall of the shell (1) corresponding to the position of the supporting shoe (2), and the connecting portions (2-2) of the supporting shoes (2) are in spherical hinge joint with the connecting rod (4) through spherical sliding bearings.
3. The circumferential shoe device for a small-diameter full-face hard rock tunnel boring machine according to claim 1, wherein: and guide plates (6) for guiding the expansion of the supporting shoes (2) are respectively fixed at two sides of the opening (1-1) in the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207165.XA CN106930771B (en) | 2017-03-31 | 2017-03-31 | Circumference supporting shoe device for small-diameter full-section hard rock tunnel boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207165.XA CN106930771B (en) | 2017-03-31 | 2017-03-31 | Circumference supporting shoe device for small-diameter full-section hard rock tunnel boring machine |
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| Publication Number | Publication Date |
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| CN106930771A CN106930771A (en) | 2017-07-07 |
| CN106930771B true CN106930771B (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710207165.XA Active CN106930771B (en) | 2017-03-31 | 2017-03-31 | Circumference supporting shoe device for small-diameter full-section hard rock tunnel boring machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756906B (en) * | 2018-07-19 | 2024-02-02 | 中国铁建重工集团股份有限公司 | Shield machine and inclined wedge supporting shoe device thereof |
| CN110608044B (en) * | 2019-10-11 | 2024-06-04 | 安徽唐兴装备科技股份有限公司 | Deviation rectifying guide mechanism of rectangular push bench |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10220181A (en) * | 1997-02-12 | 1998-08-18 | Komatsu Ltd | Tunnel boring machine |
| CN102704940A (en) * | 2012-06-29 | 2012-10-03 | 中国铁建重工集团有限公司 | Limit protection device for supporting oil cylinder of open type whole-section tunnel rock boring machine |
| CN202510121U (en) * | 2012-03-13 | 2012-10-31 | 秦皇岛天业通联重工股份有限公司 | Hard rock boring machine |
| CN102953735A (en) * | 2012-12-04 | 2013-03-06 | 大连华锐重工集团股份有限公司 | Composite soil pressure balance shield with front support and back support |
| CN204492829U (en) * | 2015-03-25 | 2015-07-22 | 中铁工程装备集团有限公司 | The shape keeper of big cross section long distance rectangular shield |
| CN205047230U (en) * | 2015-09-24 | 2016-02-24 | 重庆庞鑫建设工程有限公司 | Low -cost hard rock tunnel entry driving machine |
| CN205654347U (en) * | 2016-04-25 | 2016-10-19 | 中铁工程装备集团有限公司 | Articulated formula of two shield TBM props boots structure |
| CN206668270U (en) * | 2017-03-31 | 2017-11-24 | 江苏锐成机械有限公司 | Circumference used in minor diameter tunneling boring hard rock tunnel development machine supports shoe apparatus |
-
2017
- 2017-03-31 CN CN201710207165.XA patent/CN106930771B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10220181A (en) * | 1997-02-12 | 1998-08-18 | Komatsu Ltd | Tunnel boring machine |
| CN202510121U (en) * | 2012-03-13 | 2012-10-31 | 秦皇岛天业通联重工股份有限公司 | Hard rock boring machine |
| CN102704940A (en) * | 2012-06-29 | 2012-10-03 | 中国铁建重工集团有限公司 | Limit protection device for supporting oil cylinder of open type whole-section tunnel rock boring machine |
| CN102953735A (en) * | 2012-12-04 | 2013-03-06 | 大连华锐重工集团股份有限公司 | Composite soil pressure balance shield with front support and back support |
| CN204492829U (en) * | 2015-03-25 | 2015-07-22 | 中铁工程装备集团有限公司 | The shape keeper of big cross section long distance rectangular shield |
| CN205047230U (en) * | 2015-09-24 | 2016-02-24 | 重庆庞鑫建设工程有限公司 | Low -cost hard rock tunnel entry driving machine |
| CN205654347U (en) * | 2016-04-25 | 2016-10-19 | 中铁工程装备集团有限公司 | Articulated formula of two shield TBM props boots structure |
| CN206668270U (en) * | 2017-03-31 | 2017-11-24 | 江苏锐成机械有限公司 | Circumference used in minor diameter tunneling boring hard rock tunnel development machine supports shoe apparatus |
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| CN106930771A (en) | 2017-07-07 |
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