CN111636888B - Full-section shield device for roadway excavation - Google Patents
Full-section shield device for roadway excavation Download PDFInfo
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- CN111636888B CN111636888B CN202010517392.4A CN202010517392A CN111636888B CN 111636888 B CN111636888 B CN 111636888B CN 202010517392 A CN202010517392 A CN 202010517392A CN 111636888 B CN111636888 B CN 111636888B
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- shield
- box body
- lifting
- hinged
- top beam
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- 238000009412 basement excavation Methods 0.000 title abstract description 10
- 230000005641 tunneling Effects 0.000 claims abstract description 98
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 238000003780 insertion Methods 0.000 claims description 18
- 230000037431 insertion Effects 0.000 claims description 18
- 239000003245 coal Substances 0.000 claims description 16
- 238000010862 gear shaping Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 238000005553 drilling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000001174 ascending effect Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A full-section shield device for roadway excavation solves the problems that supporting means in the prior art is backward, frame moving is difficult, shutdown operation is needed, efficiency is low, and safety is poor. Be provided with the preceding shield body of back shield body including the rear, its characterized in that: the front shield body and the rear shield body are respectively composed of a fixed base at the lower part and a lifting top beam at the upper part, and two sides of the fixed base are respectively connected with two sides of the lifting top beam through a lifting mechanism; a tunneling operation space is arranged between the lifting top beams and the fixed bases of the front shield body and the rear shield body; a middle telescopic beam is arranged between the rear end of the lifting top beam of the front shield body and the front end of the lifting top beam of the rear shield body, and the front shield body is connected with the rear shield body through a pushing mechanism. The tunnel excavation supporting device is reasonable in design, compact in structure and stable in supporting and moving, can realize parallel operation of excavation and permanent supporting, improves excavation efficiency, and can timely mechanically support the exposed top plate at the front part of a tunnel excavation working face.
Description
Technical Field
The invention belongs to the technical field of tunneling equipment, relates to a timely supporting device for tunneling operation of a coal mine tunnel, and particularly relates to a full-section shield device for tunneling, which can be matched with tunneling operation, is stable in supporting and moving, can realize parallel operation of tunneling and permanent supporting, improves the tunneling efficiency, can timely mechanically support an exposed top plate at the front part of a tunneling working face, can realize continuous operation by shield tunneling operation, and effectively improves the environmental safety of tunneling operation.
Background
In mining, particularly in underground mining of coal mines, the recovery operation and the tunneling operation are two key links of coal mine production. With the common use of the comprehensive mechanized development machine, the efficiency of the tunnel development is greatly improved compared with the traditional operation mode of 'drilling and blasting'. However, the large increase in face production is accompanied by the consumption of large numbers of recovery roadways, so that the contradiction that excavation cannot keep up with the need for recovery is more and more prominent in many mining areas. The lower tunneling rate has close relation with the existing tunneling support mode, and the currently and generally adopted tunneling process is as follows: coal cutting and coal discharging, upper knocking and top asking, temporary supporting, upper brushing and cleaning and permanent supporting; namely: the tunneling device tunnels a step pitch, stops the machine and moves backwards, and then an operator moves to the head to anchor the net. In the traditional support mode, after the cutting of the tunneling device is finished, most of the time is that an operator performs support operations such as drilling anchor holes, surfing the internet, driving anchor rods and the like by means of manpower or an anchor rod drill carriage under the condition that the tunneling device is stopped; meanwhile, no matter how the surrounding rock conditions of the roadway are tunneled, the footage of one-time tunneling cannot be too large, otherwise, the threats of accidents such as rib stripping, roof collapse and the like can be met. The existing backward tunneling support mode is difficult to move and needs to be stopped, so that the tunneling efficiency of the tunneling device can only be exerted by 20% -25%, the working efficiency is very low, the safety is poor, and the progress of tunneling work is seriously influenced. Therefore, the method and the device for tunneling and supporting the underground coal mining roadway in the prior art need to be improved.
Disclosure of Invention
The invention aims at the problems, and provides a full-section shield device for tunneling, which can be matched with tunneling operation for operation, is stable in supporting and moving, can realize parallel operation of tunneling and permanent supporting, improves the tunneling efficiency, can timely mechanically support an exposed top plate at the front part of a tunneling working face of a tunnel, can realize continuous operation by shielding the tunneling operation, and effectively improves the environmental safety of the tunneling operation.
The technical scheme adopted by the invention is as follows: this a full section shield device for tunnelling includes preceding shield body, its characterized in that: a rear shield body is arranged behind the front shield body, the front shield body and the rear shield body are respectively composed of a fixed base at the lower part and a lifting top beam at the upper part, two sides of the fixed base are respectively connected with two sides of the lifting top beam through a lifting mechanism, and meanwhile, a tunneling operation space is also arranged between the lifting top beams of the front shield body and the rear shield body and the fixed base; a middle telescopic beam is arranged between the rear end of the lifting top beam of the front shield body and the front end of the lifting top beam of the rear shield body, and the front shield body is connected with the rear shield body through a pushing mechanism.
The front shield body comprises a front shield top beam and a front shield base, front shield upside boxes are respectively arranged on the lower portions of two sides of the front shield top beam, front shield downside boxes are respectively arranged on the upper portions of two sides of the front shield base, and the front shield downside boxes are connected with the front shield upside boxes through lifting mechanisms. The front shield top beam, the front shield base, the front shield upper side box body and the front shield lower side box body on two sides are utilized to enclose and form a tunneling operation space in the middle, meanwhile, the elevators on two sides form a support for a tunneling roadway top plate, and the front shield top beam is driven to lift so as to adapt to the height and the shape of the tunneling roadway top plate.
The upper box body of the front shield is composed of an upper box body of the front shield, a lifting cylinder accommodating cavity is arranged at the lower part of the upper box body of the front shield, and a lifting cylinder hinged lug plate and a lifting cylinder column nest are arranged in the lifting cylinder accommodating cavity; the lower box body of the front shield is composed of a lower box body of the front shield, a lifting cylinder accommodating cavity is arranged at the upper part of the lower box body of the front shield, and a lifting cylinder hinged lug plate and a lifting cylinder column nest are arranged in the lifting cylinder accommodating cavity; a front shield lifting hydraulic cylinder is arranged between a front shield lower side box body and a front shield upper side box body, the telescopic end of the front shield lifting hydraulic cylinder is hinged with a lifting cylinder hinged lug plate in a front shield upper box body lifting cylinder accommodating cavity, and the fixed end of the front shield lifting hydraulic cylinder is hinged with a lifting cylinder hinged lug plate in a front shield lower box body lifting cylinder accommodating cavity. The upper box body of the anterior shield is driven to ascend and descend vertically relative to the lower box body of the anterior shield through the anterior shield lifting hydraulic cylinder, and the upper box body of the anterior shield is smoothly lifted by utilizing the lifting cylinder column sockets and the lifting cylinder hinging lug plates.
A front shield lifting guide mechanism is arranged between the front shield lower side box body and the front shield upper side box body, and comprises a front shield lifting guide sleeve arranged at the lower part of the front shield upper box body and a guide inserting column arranged at the upper part of the front shield lower box body; the upper part of the guide inserting column of the box body at the lower side of the front shield is movably inserted in an inserting column inserting cavity of a front shield lifting guide sleeve of the box body at the upper side of the front shield. The front shield lifting guide sleeve of the front shield upper side box body is matched and connected with the guide inserting column of the front shield lower side box body to guide the lifting of the front shield upper side box body, and further the lifting stability is ensured.
The front shield top beam is composed of a front top beam main body, and the rear part of the front top beam main body is provided with a front top beam pushing lug plate which is hinged with one end of the pushing mechanism; and front shield upper box body hinged lug plates are respectively arranged on two sides of the front top beam main body, and the front shield top beam is hinged with the front top beam hinged parts arranged on the upper parts of the front shield upper box bodies on the two sides through the front shield upper box body hinged lug plates on the two sides. The front shield top beam is connected with the box bodies on the upper sides of the front shields on the two sides in a hinged mode, so that the using flexibility and the applicability of the device are improved, and the device is suitable for tunneling roadway roofs of different shapes.
The front shield base is composed of a front base main body, and the rear part of the front base main body is provided with a front base pushing lug plate which is hinged with one end of the pushing mechanism; the two sides of the front base main body are respectively provided with a front shield lower box body hinged lug plate, and the front shield base is hinged with a front base hinged part arranged at the lower part of the front shield lower box body at the two sides through the front shield lower box body hinged lug plates at the two sides. The front shield base is connected with the box bodies on the lower sides of the front shields on the two sides in a hinged mode, so that the using flexibility and the applicability of the device are improved, and the device is further suitable for tunneling roadway bottom plates in different shapes.
And two sides of the rear part of the front shield body are respectively provided with an overlapped protection side plate. In the process of mutual push-pull walking of the front shield body and the rear shield body, the overlapped protective side plates on the two sides of the front shield body are utilized to effectively protect a separation area between the front shield body and the rear shield body.
And coal shoveling and gear shaping are arranged at the front ends of the upper box body and the lower box body of the front shield on the two sides of the front shield body. The coal shoveling and inserting teeth arranged at the front ends of the two sides of the front shield body are used for shoveling and inserting the coal wall, so that the smooth forward movement of the front shield body is ensured.
The rear shield body comprises a rear shield top beam and a rear shield base, the lower parts of the two sides of the rear shield top beam are respectively provided with a rear shield upside box body, the upper parts of the two sides of the rear shield base are respectively provided with a rear shield downside box body, and the rear shield downside box body is connected with the rear shield upside box body through a lifting mechanism. The rear shield top beam, the rear shield base, the rear shield upper side box body and the rear shield lower side box body on two sides are used for enclosing and forming a tunneling operation space in the middle, meanwhile, the elevators on two sides form a support for a tunneling roadway top plate, and the rear shield top beam is driven to lift so as to adapt to the height and the shape of the tunneling roadway top plate.
The upper box body of the rear shield is composed of an upper box body of the rear shield, a lifting cylinder accommodating cavity is arranged at the lower part of the upper box body of the rear shield, and a lifting cylinder hinged lug plate and a lifting cylinder column nest are arranged in the lifting cylinder accommodating cavity; the lower box body of the rear shield is composed of a lower box body of the rear shield, a lifting cylinder accommodating cavity is arranged at the upper part of the lower box body of the rear shield, and a lifting cylinder hinged lug plate and a lifting cylinder column nest are arranged in the lifting cylinder accommodating cavity; a rear shield lifting hydraulic cylinder is arranged between a rear shield lower side box body and a rear shield upper side box body, the telescopic end of the rear shield lifting hydraulic cylinder is hinged with a lifting cylinder hinged lug plate in a rear shield upper box body lifting cylinder accommodating cavity, and the fixed end of the rear shield lifting hydraulic cylinder is hinged with a lifting cylinder hinged lug plate in a rear shield lower box body lifting cylinder accommodating cavity. Order to order about back shield upside box for back shield downside box oscilaltion through back shield hydraulic cylinder to utilize lift cylinder column nest and lift cylinder hinge lug to realize the steady lift of back shield upside box.
A rear shield lifting guide mechanism is arranged between the rear shield lower side box body and the rear shield upper side box body, and comprises a rear shield lifting guide sleeve arranged at the lower part of the rear shield upper box body and a guide inserting column arranged at the upper part of the rear shield lower box body; the upper part of the guide inserting column of the box body at the lower side of the rear shield is movably inserted in an inserting column inserting cavity of a rear shield lifting guide sleeve of the box body at the upper side of the rear shield. The rear shield lifting guide sleeve utilizing the rear shield upper side box body is connected with the guide inserting column of the rear shield lower side box body in a matched mode, so that the lifting of the rear shield upper side box body is guided, and the lifting stability is further ensured.
The rear shield top beam is composed of a rear top beam main body, and a rear top beam pull lug plate used for being hinged with one end of the pushing mechanism is arranged on the lower side of the front part of the rear top beam main body; and the two sides of the rear top beam main body are respectively provided with a rear shield upper box body hinged lug plate, and the rear shield top beam is hinged with the rear top beam hinged parts arranged on the upper parts of the rear shield upper box bodies on the two sides through the rear shield upper box body hinged lug plates on the two sides. The rear shield top beam is connected with the box bodies on the upper sides of the rear shields on the two sides in a hinged mode, so that the using flexibility and the applicability of the device are improved, and the device is suitable for tunneling roadway roofs of different shapes.
The rear shield base is composed of a rear base main body, and a rear base pulling lug plate which is hinged with one end of the pushing mechanism is arranged at the front part of the rear base main body; the two sides of the rear base main body are respectively provided with rear shield lower box body hinged lug plates, and the rear shield base is hinged with rear base hinged parts arranged on the lower side of the rear shield lower box bodies on the two sides through the rear shield lower box body hinged lug plates on the two sides. The rear shield base is connected with the box bodies on the lower sides of the rear shields on the two sides in a hinged mode, so that the using flexibility and the applicability of the device are improved, and the device is further suitable for tunneling roadway bottom plates in different shapes.
And a front shield mechanism is arranged at the front end of the lifting top beam of the front shield body.
The front shield top beam comprises a front shield top beam body and is characterized in that a front telescopic beam insertion groove is formed in the front end of the front top beam body of the front shield top beam, and a front telescopic beam is arranged in the front telescopic beam insertion groove.
The front telescopic beam is composed of a front telescopic beam main body, a front telescopic cylinder accommodating cavity is arranged in the middle of the front telescopic beam main body, a front telescopic beam hydraulic cylinder is arranged in the front telescopic cylinder accommodating cavity, and one end of the front telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged at the front end of the front telescopic cylinder accommodating cavity; the other end of the front telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged in a front telescopic beam inserting groove of the front shield top beam. The front telescopic beam is driven to extend and retract by utilizing the telescopic action of the front telescopic beam hydraulic cylinder, and then the roadway roof newly exposed at the head-on position after cutting in the tunneling operation is timely supported by the front telescopic beam.
And a rear shield mechanism is arranged at the rear end of the lifting top beam of the rear shield body.
The rear shield top beam of the rear shield body is provided with a rear shield beam at the rear end, the end part of the rear shield beam is hinged with the rear end of the rear shield top beam through a rear shield beam hinged lug plate, and a shield beam hydraulic cylinder is arranged between the lower end of the rear shield beam hinged lug plate and the middle part of the rear shield beam. The rear shield beam arranged at the rear end of the rear shield body is used for effectively shielding the related supporting operation behind the device, so that the safety of the roadway tunneling operation environment is improved.
The middle telescopic beam arranged between the front shield body and the rear shield body is movably inserted in a middle telescopic beam insertion groove arranged at the front end of the lifting top beam of the rear shield body by utilizing a middle telescopic beam hydraulic cylinder, one end of the middle telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged at the front end of the middle telescopic beam, and the other end of the middle telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged in a middle telescopic beam insertion groove of the lifting top beam of the rear shield body. The middle telescopic beam in the middle telescopic beam insertion groove is driven to extend and retract by utilizing the extension and retraction of the middle telescopic beam hydraulic cylinder, so that a separation area between the top of the front shield body and the top of the rear shield body is shielded.
The front end of a middle telescopic beam arranged between the front shield body and the rear shield body is fixedly connected with the rear end of the lifting top beam of the front shield body, and the rear end of the middle telescopic beam is movably inserted in a middle telescopic beam insertion groove arranged at the front end of the lifting top beam of the rear shield body. The front shield body is moved forward to pull the middle telescopic beam to be telescopic in the middle telescopic beam insertion groove, and then the separation area between the front shield body and the top of the rear shield body is shielded.
The invention has the beneficial effects that: because the invention adopts the front shield body with the rear shield body arranged at the rear part, the front shield body and the rear shield body are both composed of the fixed base at the lower part and the lifting top beam at the upper part, and the two sides of the fixed base are respectively connected with the two sides of the lifting top beam through the lifting mechanism; a tunneling operation space is arranged between the lifting top beams and the fixed bases of the front shield body and the rear shield body; the front shield body and the rear shield body are connected through the pushing mechanism, so that the design is reasonable, the structure is compact, the full-section shield device is independently covered outside the tunneling operation space, the temporary supporting device and the tunneling operation device are separated, the front shield body and the rear shield body of the pushing and pulling door type structure are circularly moved forwards through the pushing mechanism, and further the tunneling operation is matched for continuous forward tunneling. The full-section shield device is stable in supporting and moving, can realize parallel operation of tunneling and permanent supporting, improves the opening rate and the tunneling efficiency of the tunneling device, can timely mechanically support the exposed top plate at the front part of a tunneling working face of a roadway, realizes continuous operation by shielding tunneling operation, and effectively improves the environmental safety of the tunneling operation of the roadway.
Meanwhile, the full-face shield device for tunneling can ensure that an operator can carry out permanent support operation such as bolting or shed erecting and the like at the rear of a tunneling operation area and at the lower part of the shield device. The full-section shield device can realize the parallel operation mode of tunneling at the front end of a tunneling working face and drilling an anchor rod at the rear end, so that the tunneling device does not need to be completely stopped and retreated, and an anchor rod drilling space is reserved for the anchor drilling machine. Therefore, the traditional circulating operation mode of 'tunneling, stopping and supporting' is improved into a parallel operation mode of 'tunneling, top net laying, temporary supporting and permanent roadway supporting', the aim that 'tunneling operation' is not limited by 'permanent supporting operation' is achieved, a large amount of auxiliary operation time is saved, compared with the traditional tunneling mode used before, the tunneling speed can be improved by more than 30%, and the situation that mine excavation is continued and tense is effectively relieved. In addition, the full-section shield device can also effectively limit and prevent surrounding rock deformation and damage, maintain the integrity of a roadway roof, and is favorable for safety management of the mine roof, so that all the related tunneling operation personnel can work under the shield of the shield device, a safe and convenient operation environment is provided for tunneling and supporting of the roadway, and the effect of permanent support is ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic structural view of the front shield body in fig. 1.
Fig. 4 is a cross-sectional view taken along line a-a of fig. 3.
Fig. 5 is a schematic structural diagram of an upper box of the anterior shield in fig. 3.
Fig. 6 is a cross-sectional view taken along line D-D of fig. 5.
Fig. 7 is a cross-sectional view taken along line E-E of fig. 5.
Fig. 8 is a schematic structural view of the lower box of the anterior shield in fig. 3.
Fig. 9 is a sectional view taken along line F-F of fig. 8.
Fig. 10 is a sectional view taken along line G-G of fig. 8.
Fig. 11 is a sectional view taken along line B-B of fig. 3.
Fig. 12 is a cross-sectional view taken along line C-C of fig. 3.
Fig. 13 is a schematic view of a construction of the anterior shield canopy of fig. 11.
Fig. 14 is a side view of fig. 13.
Fig. 15 is a schematic structural view of the anterior shield base of fig. 11.
Fig. 16 is a side view of fig. 15.
Fig. 17 is a schematic structural view of the rear shield body in fig. 1.
Fig. 18 is a sectional view taken along line H-H of fig. 17.
Fig. 19 is a schematic structural view of an upper box of the rear shield in fig. 17.
Fig. 20 is a cross-sectional view taken along line K-K of fig. 19.
Fig. 21 is a cross-sectional view taken along line L-L of fig. 19.
Fig. 22 is a schematic view of a structure of a lower case of the rear shield of fig. 17.
Fig. 23 is a cross-sectional view taken along line M-M of fig. 22.
Fig. 24 is a cross-sectional view taken along line N-N of fig. 22.
Fig. 25 is a cross-sectional view taken along line I-I of fig. 17.
Fig. 26 is a cross-sectional view taken along line J-J of fig. 17.
Fig. 27 is a schematic view of a rear shield cap of fig. 25.
Fig. 28 is a side view of fig. 27.
Fig. 29 is a schematic structural view of the posterior shield base of fig. 25.
Fig. 30 is a side view of fig. 29.
Fig. 31 is a schematic view of an embodiment of the present invention in which the upper part of the lifting cap (front shield cap and rear shield cap) is a trapezoidal top.
Fig. 32 is a schematic view of an embodiment of the present invention in which the upper part of the lifting cap (front shield cap and rear shield cap) is an arc top.
Fig. 33 is a schematic view of an embodiment of the lifting mechanism on both sides of the lifting top beam (front shield top beam and rear shield top beam) of the invention extending to different lengths to adapt to the inclined top plate of the roadway.
The sequence numbers in the figures illustrate: 1 front shield body, 2 rear shield body, 3 pushing mechanism, 4 middle telescopic beam, 5 lifting top beam, 6 fixed base, 7 lifting mechanism, 8 tunneling working space, 9 front shield top beam, 10 front top beam pushing lug plate, 11 front shield base, 12 front base pushing lug plate, 13 front shield upper side box body, 14 front shield lower side box body, 15 front shield lifting hydraulic cylinder, 16 front shield lifting guide mechanism, 17 overlapping protective side plate, 18 front shield upper box body, 19 front top beam hinge part, 20 lifting cylinder hinge lug plate, 21 front shield lifting guide sleeve, 22 shovel coal gear insert, 23 lifting cylinder holding cavity, 24 lifting cylinder nest, 25 jack plug cavity, 26 front shield lower box body, 27 guide jack plug, 28 front base hinge part, 29 front top beam main body, 30 front top shield hinge lug plate, 31 front base main body, 32 front shield lower box body connection lug plate, 33 rear pull lug plate, 34 rear pull lug plate, 35 rear shield base, 36 rear shield pull lug plate, 37 rear shield upper side box body, 38 rear shield lower side box body, 39 rear shield lifting hydraulic cylinder, 40 rear shield lifting guide mechanism, 41 rear shield upper box body, 42 rear top beam articulated part, 43 rear shield lifting guide sleeve, 44 rear shield lower box body, 45 rear base articulated part, 46 rear top beam main body, 47 rear shield upper box body articulated lug plate, 48 middle telescopic beam inserting groove, 49 rear base body, 50 rear shield lower box body articulated lug plate, 51 trapezoidal top and 52 arc top.
Detailed Description
The specific structure of the present invention will be described in detail with reference to FIGS. 1 to 30. The full-section shield device for roadway excavation comprises a front shield body 1 and a rear shield body 2, the cross section of the front shield body is of a door type structure, and the rear shield body 2 is arranged behind the front shield body 1. The front shield body 1 comprises a front shield top beam 9 and a front shield base 11, and the lower parts of two sides of the front shield top beam 9 are respectively provided with a front shield upper side box body 13 extending downwards; the upper parts of the two sides of the anterior shield base 11 are respectively provided with an anterior shield lower side box body 14 which extends upwards. Moreover, a portal frame structure with a tunneling working space 8 in the middle of the cross section is formed by enclosing a front shield top beam 9, a front shield base 11, a front shield upper side box body 13 and a front shield lower side box body 14 on two sides through a lifting mechanism 7 consisting of a front shield lifting hydraulic cylinder 15 and a front shield lifting guide mechanism 16 between the front shield lower side box body 14 and the front shield upper side box body 13; meanwhile, the lifting mechanisms 7 on the two sides form a support for the top plate of the tunneling roadway and drive the front shield top beam 9 to lift so as to adapt to the height and the shape of the top plate of the tunneling roadway.
The upper front shield side box body 13 is composed of an upper front shield box body 18, two lifting cylinder accommodating cavities 23 with downward openings are arranged on the lower portion of the upper front shield box body 18 in parallel, two groups of lifting cylinder hinging lug plates 20 are arranged in the lifting cylinder accommodating cavities 23, and a lifting cylinder column socket 24 used for being in contact with the end portion of the telescopic end of the front shield lifting hydraulic cylinder 15 is arranged between the two groups of lifting cylinder hinging lug plates 20. The lower shield casing 14 is composed of a lower shield casing body 26, two lift cylinder accommodating chambers 23 having upward openings and corresponding to the positions of the lift cylinder accommodating chambers 23 of the upper shield casing 13 are provided in parallel in the upper portion of the lower shield casing body 26, two sets of lift cylinder hinge lugs 20 and lift cylinder socket 24 contacting the fixed end of the upper shield lift cylinder 15 are also provided in the lift cylinder accommodating chambers 23. A front shield lifting hydraulic cylinder 15 is arranged between the front shield lower side box body 14 and the front shield upper side box body 13, and the telescopic end of the front shield lifting hydraulic cylinder 15 is hinged with a lifting cylinder hinging lug plate 20 in a lifting cylinder accommodating cavity 23 of a front shield upper box body 18; the fixed end of the front shield hydraulic lifting cylinder 15 is hinged with the lifting cylinder hinging lug plate 20 in the lifting cylinder accommodating cavity 23 of the front shield lower box body 26. Therefore, the upper shield case 13 is driven to move up and down with respect to the lower shield case 14 by the upper shield lift cylinder 15, and the upper shield case 13 is smoothly moved up and down by the lift cylinder socket 24 and the lift cylinder hinge lug 20.
In order to ensure the lifting stability, an anterior shield lifting guide mechanism 16 is further arranged between the anterior shield lower side box 14 and the anterior shield upper side box 13. The anterior shield elevation guide mechanism 16 includes an anterior shield elevation guide sleeve 21 provided on a lower portion of the anterior shield upper case body 18 of the anterior shield upper case 13, and a guide insert 27 provided on an upper portion of the anterior shield lower case body 26 of the anterior shield lower case 14. The upper part of the guide insert 27 of the lower shield case 14 is movably inserted into the insert insertion cavity 25 of the upper shield lifting guide sleeve 21 of the upper shield case 13, and the upper shield lifting guide sleeve 21 of the upper shield case 13 is connected with the guide insert 27 of the lower shield case 14 in a matching manner to guide the lifting of the upper shield case 13.
The front shield top beam 9 is composed of a front top beam main body 29, and a front top beam pushing lug plate 10 which is hinged with one end of a pushing hydraulic cylinder of a pushing mechanism 3 positioned at the upper part of the tunneling operation space 8 is arranged at the rear part of the front top beam main body 29 of the front shield top beam 9. Moreover, the front shield upper box body hinged ear plates 30 are respectively arranged on two sides of the front top beam main body 29, the front shield top beam 9 is hinged with the front top beam hinged ear plates 30 arranged on the upper parts of the front shield upper box body 18 of the front shield upper box bodies 13 on two sides through the front shield upper box body hinged ear plates 30 on two sides, and further, the front shield top beam 9 is connected with the front shield upper box bodies 13 on two sides in a hinged mode, so that the use flexibility and the applicability of the device are improved, and the device is suitable for tunneling roadway roofs of different shapes.
The front shield base 11 is composed of a front base body 31, and a front base pushing lug plate 12 for being hinged to one end of a pushing hydraulic cylinder of a pushing mechanism 3 located at the lower part of the tunneling operation space 8 is provided at the rear part of the front base body 31. The two sides of the front base main body 31 are respectively provided with a front shield lower box body hinged lug plate 32, and the front shield base 11 is hinged with a front base hinged part 28 arranged at the lower part of the front shield lower box body 26 of the front shield lower side box body 14 at the two sides through the front shield lower box body hinged lug plates 32 at the two sides; the front shield base 11 is connected with the box bodies 14 at the lower sides of the front shields at two sides in a hinged mode, so that the using flexibility and the applicability of the device are improved, and the device is further suitable for tunneling roadway bottom plates in different shapes. The outer sides of the upper box bodies 13 of the front shield on the two sides of the front shield body 1 are respectively provided with an overlapping protective side plate 17, and the overlapping protective side plates 17 can be connected with the side parts of the upper box bodies 13 of the front shield and also can be connected with the side parts of the top beams 9 of the front shield; and then in the process that the pushing hydraulic cylinder of the pushing mechanism 3 stretches and retracts to drive the front shield body 1 and the rear shield body 2 to mutually push and pull to walk, the separation area between the two side parts of the front shield body 1 and the rear shield body 2 is effectively protected by utilizing the overlapped protection side plates 17 arranged at the two sides of the front shield body 1. For the purpose of ensuring the smooth forward movement of the front shield body 1, the front ends of the upper front shield side box body 13 and the lower front shield side box body 14 on both sides of the front shield body 1 are respectively provided with a plurality of groups of coal shoveling gear shaping 22 which are longitudinally arranged, so that the coal wall is shoveled and inserted through the coal shoveling gear shaping 22 arranged on the front ends on both sides of the front shield body 1, and the forward movement of the front shield body 1 is facilitated.
The rear shield body 2 comprises a rear shield top beam 33 and a rear shield base 35, and lower parts of two sides of the rear shield top beam 33 are respectively provided with a rear shield upper side box body 37 extending downwards; the upper parts of the two sides of the rear shield base 35 are respectively provided with a rear shield lower side box body 38 extending upwards, and the rear shield lower side box body 38 and the rear shield upper side box body 37 are connected through a lifting mechanism 7 consisting of a rear shield lifting hydraulic cylinder 39 and a rear shield lifting guide mechanism 40; further, a rear shield top beam 33, a rear shield base 35, and a rear shield upper side box body 37 and a rear shield lower side box body 38 on two sides are utilized to enclose a middle tunneling operation space 8; and the lifting mechanisms 7 on the two sides form a support for the top plate of the tunneling roadway and drive the rear shield top beam 33 to lift so as to adapt to the height and the shape of the top plate of the tunneling roadway.
The rear shield upper side box body 37 arranged on two sides of the rear shield top beam 33 is composed of a rear shield upper box body 41, two lifting cylinder accommodating cavities 23 with downward openings are arranged in parallel on the lower portion of the rear shield upper box body 41, two groups of lifting cylinder hinged lug plates 20 are arranged in the lifting cylinder accommodating cavities 23, and a lifting cylinder column socket 24 used for being in contact with the end portion of the telescopic end of the rear shield lifting hydraulic cylinder 39 is arranged between the two groups of lifting cylinder hinged lug plates 20. The lower rear shield box 38 is composed of a lower rear shield box body 44, two lifting cylinder accommodating cavities 23 with upward openings and corresponding to the positions of the lifting cylinder accommodating cavities 23 of the upper rear shield box 37 are arranged in parallel on the upper portion of the lower rear shield box body 44, lifting cylinder hinge lug plates 20 and lifting cylinder column sockets 24 are arranged in the lifting cylinder accommodating cavities 23, and the lifting cylinder column sockets 24 are in contact with the fixed end portions of the rear shield lifting hydraulic cylinders 39. A rear shield lifting hydraulic cylinder 39 is arranged between the rear shield lower side box body 38 and the rear shield upper side box body 37; the telescopic end of the rear shield lifting hydraulic cylinder 39 is hinged with the lifting cylinder hinge lug plate 20 in the lifting cylinder accommodating cavity 23 of the upper box body 41 of the rear shield, and the fixed end of the rear shield lifting hydraulic cylinder 39 is hinged with the lifting cylinder hinge lug plate 20 in the lifting cylinder accommodating cavity 23 of the lower box body 44 of the rear shield. The rear shield upper box body 37 is driven to ascend and descend relative to the rear shield lower box body 38 through the rear shield ascending and descending hydraulic cylinder 39, and the ascending and descending stability of the rear shield upper box body 37 is ensured by utilizing the ascending and descending cylinder column sockets 24 and the ascending and descending cylinder hinging lug plates 20.
In order to ensure the stability of the shield lifting, a rear shield lifting guide mechanism 40 is arranged between the rear shield lower side box body 38 and the rear shield upper side box body 37. The rear shield elevation guide mechanism 40 includes a rear shield elevation guide sleeve 43 provided at a lower portion of the rear shield upper case body 41 of the rear shield upper case 37, and a guide insert 27 provided at an upper portion of the rear shield lower case body 44 of the rear shield lower case 38. The upper part of the guide inserting column 27 of the rear shield lower box body 38 is movably inserted in the inserting column inserting cavity 25 of the rear shield lifting guide sleeve 43 of the rear shield upper box body 37, so that the rear shield lifting guide sleeve 43 of the rear shield upper box body 37 is inserted in the guide inserting column 27 of the rear shield lower box body 38 in a matched mode to guide the lifting of the rear shield upper box body 37, and the lifting stability is ensured.
The rear shield top beam 33 is composed of a rear top beam main body 46, and a rear top beam pull lug plate 34 which is hinged with one end of a pushing hydraulic cylinder of a pushing mechanism 3 positioned at the upper part of the tunneling operation space 8 is further arranged on the lower side of the front part of the rear top beam main body 46 of the rear shield top beam 33. Rear shield upper box body hinge lug plates 47 are respectively arranged on two sides of the rear top beam main body 46, and the rear shield top beam 33 is hinged with the rear top beam hinge parts 42 arranged on the upper parts of the rear shield upper box body 41 of the rear shield upper box bodies 37 on the two sides through the rear shield upper box body hinge lug plates 47 on the two sides. The use flexibility and the applicability of the device are improved through the hinged connection of the rear shield top beam 33 and the box bodies 37 on the upper sides of the rear shields on two sides, so that the device is suitable for tunneling roadway roofs of different shapes.
A middle telescopic beam 4 for shielding a separation area between the front shield body 1 and the top of the rear shield body 2 is arranged between the front shield body 1 and the rear shield body 2, and the middle telescopic beam 4 is movably inserted in a middle telescopic beam insertion groove 48 arranged at the front end of the rear shield top beam 33 of the rear shield body 2 by using a middle telescopic beam hydraulic cylinder; one end of the middle telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged at the front end of the middle telescopic beam 4, and the other end of the middle telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged in a middle telescopic beam insertion groove 48 at the front end of the rear top beam main body 46 of the rear shield top beam 33; thereby, the extension and retraction of the middle telescopic beam 4 in the middle telescopic beam insertion groove 48 are driven by the extension and retraction of the middle telescopic beam hydraulic cylinder so as to shield the separation area between the top of the front shield body 1 and the top of the rear shield body 2. It can be understood that, according to the specific use requirement, the middle telescopic beam 4 disposed between the front shield body 1 and the rear shield body 2 may also adopt a structural form that the front end of the middle telescopic beam 4 is fixedly connected with the rear end of the front shield top beam 9 of the front shield body 1, and meanwhile, the rear end of the middle telescopic beam 4 is movably inserted into the middle telescopic beam insertion groove 48 disposed at the front end of the rear shield top beam 33 of the rear shield body 2. So as to utilize the forward movement of the front shield body 1 to pull the middle telescopic beam 4 to stretch in the middle telescopic beam insertion groove 48, and further shield the separation area between the front shield body 1 and the top of the rear shield body 2.
The rear shield base 35 is composed of a rear base body 49, and a rear base pulling lug plate 36 for being hinged to one end of a pushing hydraulic cylinder of the pushing mechanism 3 located at the lower part of the tunneling operation space 8 is provided at the front part of the rear base body 49. The rear base main body 49 is provided with rear shield lower case hinge lugs 50 on both sides thereof, and the rear shield base 35 is hinged to the rear base hinge parts 45 provided on the lower part of the rear shield lower case main body 44 of the rear shield lower case 38 on both sides thereof via the rear shield lower case hinge lugs 50 on both sides thereof. Therefore, the rear shield base 35 is connected with the box bodies 38 at the lower sides of the rear shields at two sides in a hinged mode, so that the using flexibility and the applicability of the device are improved, and the device is suitable for the conditions of the tunneling roadway bottom plates with different shapes.
The front shield top beam 9 of the front shield body 1 is provided with a front shield mechanism at the front end; according to specific use requirements, the front shield mechanism can adopt a telescopic plug-in type shield structure and can also adopt a hinged type shield structure which can swing up and down. The front shield mechanism of the telescopic plug-in type shield structure comprises a front telescopic beam plug-in groove arranged at the front end of a front top beam main body 29 of a front shield top beam 9, and a front telescopic beam is movably plugged in the front telescopic beam plug-in groove. The front telescopic beam is composed of a front telescopic beam main body, a front telescopic cylinder accommodating cavity is arranged in the middle of the front telescopic beam main body, a front telescopic beam hydraulic cylinder is arranged in the front telescopic cylinder accommodating cavity, and one end of the front telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinge lug plate arranged at the front end of the front telescopic cylinder accommodating cavity; the other end of the front telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged in a front telescopic beam inserting groove of the front shield top beam 9. Meanwhile, a plurality of groups of coal shoveling gear shaping 22 can be further arranged at the front end of the front telescopic beam main body of the front telescopic beam, so that the front telescopic beam is driven to extend and retract by utilizing the extension and retraction of the front telescopic beam hydraulic cylinder, and then the roadway roof newly exposed at the head-on position after cutting in the tunneling operation is timely supported by the front telescopic beam.
A rear shield mechanism is arranged at the rear end of the rear shield top beam 33 of the rear shield body 2; according to specific use requirements, the rear shield mechanism can adopt a telescopic plug-in type shield structure and can also adopt a hinged type shield structure which can swing up and down. The rear shield mechanism of the articulated shield structure which can swing up and down comprises a rear shield beam, the end part of the rear shield beam is articulated with the rear end of a rear shield top beam 33 through a rear shield beam articulated lug plate, and a shield beam hydraulic cylinder is arranged between the lower end of the rear shield beam articulated lug plate and the middle part of the rear shield beam; and further, a rear shield beam arranged at the rear end of the rear shield body 2 is utilized to further effectively shield related supporting operation behind the device. Moreover, anchor nets can be laid on the rear shield beams, operators can carry out anchor rod and anchor cable drilling operation under the rear shield beams, and meanwhile, anchor rods can be drilled in gaps among a plurality of groups of rear shield beams; so as to further improve the safety of the tunneling operation environment. The front top beam pushing lug plate 10 of the front shield body 1 and the rear top beam pulling lug plate 34 of the rear shield body 2, and the front base pushing lug plate 12 of the front shield body 1 and the rear base pulling lug plate 36 of the rear shield body 2 are respectively connected through a pushing mechanism 3 with a pushing hydraulic cylinder, so that the front shield body 1 and the rear shield body 2 can be pushed and pulled to walk mutually.
When in use, the full-section shield device for tunneling is arranged in a tunneling working face, and then the full-section shield device respectively extends out of each front shield lifting hydraulic cylinder 15 between the front shield upper side box body 13 and the front shield lower side box body 14 on two sides of the front shield body 1 and each rear shield lifting hydraulic cylinder 39 between the rear shield upper side box body 37 and the rear shield lower side box body 38 on two sides of the rear shield body 2, so that the front shield top beam 9 of the front shield body 1 and the rear shield top beam 33 of the rear shield body 2 are both contacted with a top plate of a tunneling tunnel to form support for the top plate of the tunnel. The pushing hydraulic cylinder of the pushing mechanism 3 connected between the front shield body 1 and the rear shield body 2 and the middle telescopic beam 4 between the front shield body 1 and the rear shield body 2 are both in a withdrawing state.
And, the roadheader (or other excavating equipment) is arranged in the excavating work space 8 between the lifting top beams 5 (the front shield top beam 9 and the rear shield top beam 33) and the fixed bases 6 (the front shield base 11 and the rear shield base 35) of the front shield body 1 and the rear shield body 2. It can be understood that the upper part of the lifting cap 5 (front shield cap 9 and rear shield cap 33) can be arranged as a trapezoidal top 51 (as shown in fig. 31) or as an arc top 52 (as shown in fig. 32), according to the specific use requirements; moreover, in order to accommodate the inclined roof of the roadway, the lengths of the projecting lengths of the lifting mechanisms 7 on both sides may be different (as shown in fig. 33). Meanwhile, if the rear shield mechanism is arranged at the rear end of the rear shield top beam 33 of the rear shield body 2, the rear shield mechanism is unfolded to support the top plate of the rear area of the shield body, so that the related supporting operation behind the device can be effectively supported, and the safety of the roadway tunneling operation environment is further improved.
The fully-mechanized excavating machine (or other excavating equipment and manners) starts to excavate, and when the excavating operation finishes cutting the area of the top of the roadway rock mass, the front end of the front shield top beam 9 of the front shield body 1 can support a newly exposed top plate at the front end of the roadway; if the front shield top beam 9 of the front shield body 1 is provided with a front shield mechanism at the front end, the front shield mechanism is extended or unfolded, so that a newly exposed top plate at the front end of the roadway is temporarily supported. When forward continuous cutting is needed, a front shield lifting hydraulic cylinder 15 of the front shield body 1 is retracted, and the front shield top beam 9 is temporarily separated from the roadway top plate, so that the front shield body 1 can be pushed forwards conveniently; then, the pushing hydraulic cylinders of the pushing mechanism 3 are extended to move the front shield body 1 and the fully-mechanized excavating equipment arranged thereon forwards together, and simultaneously, the middle telescopic beam 4 is extended to temporarily support the tunnel top plate of the separation area between the tops of the front shield body 1 and the rear shield body 2.
After the shield tunneling operation of the front shield body 1 cuts a step distance, when the front shield body 1 needs to move forward and continue to move and the shield tunneling operation cuts, the front shield lifting hydraulic cylinder 15 of the front shield body 1 is extended out again, so that the front shield top beam 9 is in contact with the roadway roof and forms effective support, and then the rear shield lifting hydraulic cylinder 39 of the rear shield body 2 is retracted to temporarily separate the rear shield top beam 33 from the roadway roof. Then, the pushing hydraulic cylinders of the pushing mechanism 3 are retracted, the rear shield body 2 and the fully-mechanized excavating equipment arranged on the rear shield body are pulled to move forwards together, and the middle telescopic beam 4 is gradually retracted while the rear shield body 2 moves forwards and approaches the front shield body 1. After the rear shield body 2 is moved forward to the right position, the rear shield lifting hydraulic cylinder 39 of the rear shield body 2 is extended out, so that the rear shield top beam 33 is contacted with the roadway roof again to form support, and roadway cutting at the next distance is prepared. In the tunneling process, permanent support operation of driving anchor rods is carried out on the top plate and two sides of the rear roadway space under the shielding of the rear shielding beam at the rear end of the rear shield body 2 by using drilling anchor support operation equipment arranged behind the shield device, so that the parallel operation of tunneling and permanent support is realized.
The tunneling and cutting operations are repeated, the front shield body 1 moves forwards, the rear shield body 2 is pulled, permanent support is carried out on the rear portion of the rear shield body 2, cut coal and rocks are conveyed out of a tunneling working face, and the like, so that the front shield body 1 and the rear shield body 2 are pushed and pulled by the pushing mechanism 3 to move forwards circularly under the condition that complete shutdown and backward movement are not needed in the tunneling operation, and further the tunneling operation is matched for continuous forward tunneling, time wasted by alternation among different working procedures is reduced, safety guarantee is provided for the supporting operation of workers, and the tunneling efficiency is obviously improved.
Claims (14)
1. The utility model provides a full section shield device for tunnelling, includes preceding shield body (1), its characterized in that: a rear shield body (2) is arranged behind the front shield body (1), the front shield body (1) and the rear shield body (2) are both composed of a fixed base (6) at the lower part and a lifting top beam (5) at the upper part, two sides of the fixed base (6) are respectively connected with two sides of the lifting top beam (5) through a lifting mechanism (7), and meanwhile, a tunneling operation space (8) is arranged between the lifting top beam (5) and the fixed base (6) of the front shield body (1) and the rear shield body (2); a middle telescopic beam (4) is arranged between the rear end of the lifting top beam (5) of the front shield body (1) and the front end of the lifting top beam (5) of the rear shield body (2), and the front shield body (1) is connected with the rear shield body (2) through a pushing mechanism (3);
the front shield body (1) comprises a front shield top beam (9) and a front shield base (11), wherein front shield upper side box bodies (13) are respectively arranged at the lower parts of two sides of the front shield top beam (9), front shield lower side box bodies (14) are respectively arranged at the upper parts of two sides of the front shield base (11), and the front shield lower side box bodies (14) are connected with the front shield upper side box bodies (13) through a lifting mechanism (7); the upper box body (13) of the front shield is composed of an upper box body (18) of the front shield, a lifting cylinder accommodating cavity (23) is arranged at the lower part of the upper box body (18) of the front shield, and a lifting cylinder hinged lug plate (20) and a lifting cylinder column socket (24) are arranged in the lifting cylinder accommodating cavity (23); the lower box body (14) of the front shield is composed of a lower box body (26) of the front shield, a lifting cylinder accommodating cavity (23) is arranged at the upper part of the lower box body (26) of the front shield, and a lifting cylinder hinged lug plate (20) and a lifting cylinder column socket (24) are arranged in the lifting cylinder accommodating cavity (23); a front shield lifting hydraulic cylinder (15) is arranged between a front shield lower side box body (14) and a front shield upper side box body (13), the telescopic end of the front shield lifting hydraulic cylinder (15) is hinged with a lifting cylinder hinging lug plate (20) in a lifting cylinder accommodating cavity (23) of a front shield upper box body (18), and the fixed end of the front shield lifting hydraulic cylinder (15) is hinged with a lifting cylinder hinging lug plate (20) in a lifting cylinder accommodating cavity (23) of a front shield lower box body (26); a front shield lifting guide mechanism (16) is arranged between the front shield lower side box body (14) and the front shield upper side box body (13), and the front shield lifting guide mechanism (16) comprises a front shield lifting guide sleeve (21) arranged at the lower part of the front shield upper box body (18) and a guide inserting column (27) arranged at the upper part of the front shield lower box body (26); the upper part of a guide inserting column (27) of the front shield lower side box body (14) is movably inserted into an inserting column inserting cavity (25) of a front shield lifting guide sleeve (21) of the front shield upper side box body (13);
the rear shield body (2) comprises a rear shield top beam (33) and a rear shield base (35), rear shield upper side boxes (37) are respectively arranged at the lower parts of the two sides of the rear shield top beam (33), rear shield lower side boxes (38) are respectively arranged at the upper parts of the two sides of the rear shield base (35), and the rear shield lower side boxes (38) are connected with the rear shield upper side boxes (37) through a lifting mechanism (7); the upper box body (37) of the rear shield is composed of an upper box body (41) of the rear shield, a lifting cylinder accommodating cavity (23) is formed in the lower portion of the upper box body (41) of the rear shield, and a lifting cylinder hinge lug plate (20) and a lifting cylinder column socket (24) are arranged in the lifting cylinder accommodating cavity (23); the lower box body (38) of the rear shield is composed of a lower box body (44) of the rear shield, a lifting cylinder accommodating cavity (23) is arranged at the upper part of the lower box body (44) of the rear shield, and a lifting cylinder hinge lug plate (20) and a lifting cylinder column socket (24) are arranged in the lifting cylinder accommodating cavity (23); a rear shield lifting hydraulic cylinder (39) is arranged between the rear shield lower box body (38) and the rear shield upper box body (37), the telescopic end of the rear shield lifting hydraulic cylinder (39) is hinged with a lifting cylinder hinging lug plate (20) in a lifting cylinder accommodating cavity (23) of the rear shield upper box body (41), and the fixed end of the rear shield lifting hydraulic cylinder (39) is hinged with a lifting cylinder hinging lug plate (20) in a lifting cylinder accommodating cavity (23) of the rear shield lower box body (44); a rear shield lifting guide mechanism (40) is arranged between the rear shield lower side box body (38) and the rear shield upper side box body (37), and the rear shield lifting guide mechanism (40) comprises a rear shield lifting guide sleeve (43) arranged at the lower part of the rear shield upper box body (41) and a guide inserting column (27) arranged at the upper part of the rear shield lower box body (44); the upper part of a guide inserting column (27) of the rear shield lower side box body (38) is movably inserted into an inserting column inserting cavity (25) of a rear shield lifting guide sleeve (43) of the rear shield upper side box body (37).
2. The full face shield apparatus for tunnel boring of claim 1, wherein: the front shield top beam (9) is composed of a front top beam main body (29), and a front top beam pushing lug plate (10) which is hinged with one end of the pushing mechanism (3) is arranged at the rear part of the front top beam main body (29); front shield upper box body hinged lug plates (30) are respectively arranged on two sides of the front top beam main body (29), and the front shield top beam (9) is hinged with front top beam hinged parts (19) arranged on the upper parts of the front shield upper box bodies (13) on the two sides through the front shield upper box body hinged lug plates (30) on the two sides.
3. The full face shield apparatus for tunnel boring of claim 1, wherein: the front shield base (11) is composed of a front base main body (31), and the rear part of the front base main body (31) is provided with a front base pushing lug plate (12) which is hinged with one end of the pushing mechanism (3); the two sides of the front base main body (31) are respectively provided with a front shield lower box body hinged lug plate (32), and the front shield base (11) is hinged with a front base hinged part (28) arranged at the lower part of the front shield lower box body (14) at the two sides through the front shield lower box body hinged lug plates (32) at the two sides.
4. The full face shield apparatus for tunnel boring of claim 1, wherein: and two sides of the rear part of the front shield body (1) are respectively provided with an overlapped protective side plate (17).
5. The full face shield apparatus for tunnel boring of claim 1, wherein: the front ends of a front shield upper side box body (13) and a front shield lower side box body (14) on two sides of the front shield body (1) are respectively provided with coal shoveling gear shaping (22).
6. The full face shield apparatus for tunnel boring of claim 1, wherein: the rear shield top beam (33) is composed of a rear top beam main body (46), and a rear top beam pull lug plate (34) which is hinged with one end of the pushing mechanism (3) is arranged on the lower side of the front part of the rear top beam main body (46); and rear shield upper box body hinged lug plates (47) are respectively arranged on two sides of the rear top beam main body (46), and the rear shield top beam (33) is hinged with rear top beam hinged parts (42) arranged on the upper parts of the rear shield upper box bodies (37) on the two sides through the rear shield upper box body hinged lug plates (47) on the two sides.
7. The full face shield apparatus for tunnel boring of claim 1, wherein: the rear shield base (35) is composed of a rear base main body (49), and a rear base pulling lug plate (36) which is hinged with one end of the pushing mechanism (3) is arranged at the front part of the rear base main body (49); the two sides of the rear base main body (49) are respectively provided with a rear shield lower box body hinged lug plate (50), and the rear shield base (35) is hinged with a rear base hinged part (45) arranged at the lower part of the rear shield lower side box body (38) at the two sides through the rear shield lower box body hinged lug plates (50) at the two sides.
8. The full face shield apparatus for tunnel boring of claim 1, wherein: the front shield is characterized in that a front shield mechanism is arranged at the front end of the lifting top beam (5) of the front shield body (1).
9. The full face shield apparatus for tunnel boring of claim 2, wherein: the front shield top beam is characterized in that a front telescopic beam insertion groove is formed in the front end of a front top beam main body (29) of the front shield top beam (9), and a front telescopic beam is arranged in the front telescopic beam insertion groove.
10. The full face shield apparatus for tunnel boring of claim 9, wherein: the front telescopic beam is composed of a front telescopic beam main body, a front telescopic cylinder accommodating cavity is arranged in the middle of the front telescopic beam main body, a front telescopic beam hydraulic cylinder is arranged in the front telescopic cylinder accommodating cavity, and one end of the front telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged at the front end of the front telescopic cylinder accommodating cavity; the other end of the front telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged in a front telescopic beam inserting groove of the front shield top beam (9).
11. The full face shield apparatus for tunnel boring of claim 1, wherein: the rear shield is characterized in that a rear shield mechanism is arranged at the rear end of the lifting top beam (5) of the rear shield body (2).
12. The full face shield apparatus for tunnel boring of claim 1, wherein: the rear shield top beam (33) rear end of the rear shield body (2) is provided with a rear shield beam, the rear shield beam end is hinged with the rear shield top beam (33) rear end through a rear shield beam hinged ear plate, and a shield beam hydraulic cylinder is arranged between the rear shield beam hinged ear plate lower end and the rear shield beam middle part.
13. The full face shield apparatus for tunnel boring of claim 1, wherein: the middle telescopic beam (4) arranged between the front shield body (1) and the rear shield body (2) is movably inserted into a middle telescopic beam insertion groove (48) arranged at the front end of the lifting top beam (5) of the rear shield body (2) by utilizing a middle telescopic beam hydraulic cylinder, one end of the middle telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged at the front end of the middle telescopic beam (4), and the other end of the middle telescopic beam hydraulic cylinder is hinged with a telescopic cylinder hinged lug plate arranged in the middle telescopic beam insertion groove (48) of the lifting top beam (5) of the rear shield body (2).
14. The full face shield apparatus for tunnel boring of claim 1, wherein: the front end of a middle telescopic beam (4) arranged between the front shield body (1) and the rear shield body (2) is fixedly connected with the rear end of a lifting top beam (5) of the front shield body (1), and the rear end of the middle telescopic beam (4) is movably inserted into a middle telescopic beam insertion groove (48) arranged at the front end of the lifting top beam (5) of the rear shield body (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010517392.4A CN111636888B (en) | 2020-06-09 | 2020-06-09 | Full-section shield device for roadway excavation |
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| CN202010517392.4A CN111636888B (en) | 2020-06-09 | 2020-06-09 | Full-section shield device for roadway excavation |
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| CN111636888A CN111636888A (en) | 2020-09-08 |
| CN111636888B true CN111636888B (en) | 2022-02-11 |
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| CN202010517392.4A Active CN111636888B (en) | 2020-06-09 | 2020-06-09 | Full-section shield device for roadway excavation |
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| CN202645555U (en) * | 2012-04-06 | 2013-01-02 | 中铁隧道装备制造有限公司 | Fully-sealed coal roadway heading-anchoring synchronizer |
| CN103527228A (en) * | 2013-09-29 | 2014-01-22 | 淮南国力液压装备有限公司 | Self-propelled type temporary support and anchor support machine for coal mine roadway |
| CN104500086A (en) * | 2015-01-15 | 2015-04-08 | 山西大同大学 | Unmanned roadway driving and anchoring all-in-one machine |
| CN105386771A (en) * | 2015-12-17 | 2016-03-09 | 辽宁天安科技有限公司 | Shield type digging and anchoring machine |
| CN207063985U (en) * | 2017-07-31 | 2018-03-02 | 盾构及掘进技术国家重点实验室 | Open-type full-face rock ripper support system |
| CN110410118A (en) * | 2019-07-29 | 2019-11-05 | 沈阳天安科技股份有限公司 | A kind of novel piercing technique |
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