CN117449864A - Tunnel widening driving protection construction device and tunnel widening construction method - Google Patents
Tunnel widening driving protection construction device and tunnel widening construction method Download PDFInfo
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- CN117449864A CN117449864A CN202311774187.6A CN202311774187A CN117449864A CN 117449864 A CN117449864 A CN 117449864A CN 202311774187 A CN202311774187 A CN 202311774187A CN 117449864 A CN117449864 A CN 117449864A
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- 238000010276 construction Methods 0.000 title claims abstract description 80
- 230000007246 mechanism Effects 0.000 claims abstract description 136
- 230000001681 protective effect Effects 0.000 claims abstract description 63
- 230000009194 climbing Effects 0.000 claims description 15
- 238000009412 basement excavation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- E21D9/01—Methods or apparatus for enlarging or restoring the cross-section of tunnels, e.g. by restoring the floor to its original level
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0472—Supports specially adapted for people walking or transporting material
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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
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
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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
- E21D9/10—Making by using boring or cutting machines
- E21D9/1093—Devices for supporting, advancing or orientating the machine or the tool-carrier
-
- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/122—Working or loading platforms
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The construction device comprises a protection trolley, wherein the protection trolley is arranged at one side of the tunnel, a protection wall is arranged on the side surface of the protection trolley, a supporting mechanism is arranged above the protection wall, and the protection wall separates the protection trolley from the space at the other side of the tunnel, so that the tunnel is divided into a protection passing area and a widening construction area in the width direction of the tunnel; the side wall of the protective wall facing the widened construction area is provided with a cutting mechanism, the protective wall is connected with a protective trolley, and the protective wall is pulled by the protective trolley so as to balance the lateral tension of the cutting mechanism on the protective wall. The protection wall can play a role in supporting the top of a tunnel and preventing collapse, and on the other hand, the protection wall is used for separating a widened construction area from a protection passing area, vehicles pass through the protection wall and the protection trolley to form double-layer protection, driving safety is guaranteed, and influence of construction noise and the like on passing staff is reduced. The widened construction area has larger construction space, and is convenient for excavating equipment to excavate and construct.
Description
Technical Field
The invention relates to tunnel widening equipment, in particular to a tunnel widening driving protection construction device and a tunnel widening construction method.
Background
With the development of social economy, the traffic of automobiles increases year by year, and the existing tunnels cannot meet the current traffic demands due to small width and few lanes. And limited by geographical location, new tunnels cannot be set in some places, or because the cost of newly added tunnels is too high, the widening based on the original tunnels is a current economical and practical mode.
In the process of widening construction on the basis of the existing tunnel, in order to ensure continuous running of the road, the widening construction is carried out while protecting vehicles pass through by adopting protection equipment, so that the method is a main development direction of the current tunnel widening construction. The prior tunnel widening protective equipment mainly comprises a protective trolley covered above a road, and the protective trolley is used for blocking falling rocks, splashes and the like in construction by virtue of a protective wall of the protective trolley so as to protect driving safety. In the existing protective structure, only one layer of protective trolley shield is arranged between a lane and an excavation construction area, the protective force is weak, and the phenomenon that the falling rocks and the like smash on the protective trolley to interfere drivers of internal traffic vehicles can also occur, so that traffic safety is affected. Moreover, the protection trolley can only protect the internal passing vehicles, and cannot protect constructors who operate and transport materials and the like outside the protection trolley. In addition, the tunnel needs to be cut before widening and excavating, and the available construction area in the tunnel is narrower after the protective trolley is arranged, so that the conventional cutting construction equipment is limited in operation, and the construction efficiency is affected.
Disclosure of Invention
The invention aims to overcome the defects of low tunnel lining cutting construction efficiency caused by weak protection force and narrow construction space of the conventional equipment in tunnel widening construction, and provides a tunnel widening traveling crane protection construction device and a tunnel widening construction method.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a tunnel expands driving protection construction equipment, includes and is used for forming the protection platform truck of driving a vehicle passageway in order to protect traffic vehicle under it along tunnel length direction extension, protection platform truck bias tunnel one side set up, be equipped with the protection wall in the side of protection platform truck, the top of protection wall is equipped with the supporting mechanism that is used for supporting at the tunnel top, the protection wall separates the protection platform truck with the space of tunnel opposite side, makes the tunnel be divided into by the protection wall in its width direction and contains the protection traffic zone of protection platform truck and is used for the expansion construction zone of expanding excavating equipment construction; the side wall of the protective wall towards the widened construction area is provided with a walking track extending along the length direction of the tunnel, a walking pulley is connected to the walking track in a matched mode, a cutting mechanism for cutting the wall surface of the tunnel is arranged on the walking pulley, the protective wall is connected with a protective trolley, and the protective wall is pulled through the protective trolley to balance the lateral tension of the cutting mechanism to the protective wall.
The bottoms of the protection trolley and the protection wall are provided with travelling mechanisms.
The supporting mechanism comprises a supporting top plate and a lifting mechanism, wherein the supporting top plate is used for supporting the top of a tunnel, and the lifting mechanism is used for driving the supporting top plate to lift.
The travelling pulley is provided with a vertical climbing mechanism, and the cutting mechanism is arranged on the vertical climbing mechanism and can move up and down along the vertical climbing mechanism.
The cutting mechanism comprises a circumferential cutting mechanism for cutting along the circumferential direction of a tunnel and a longitudinal cutting mechanism for cutting along the extending direction of the tunnel, wherein the circumferential cutting mechanism and the longitudinal cutting mechanism both comprise a supporting arm capable of being driven to deflect by a slewing mechanism and a telescopic arm connected to the supporting arm in a telescopic manner, and a cutting saw is arranged at one end of the telescopic arm extending outwards.
The rotation directions of the annular cutting mechanism and the longitudinal cutting mechanism are vertically intersected.
One end of the telescopic arm extending outwards is provided with a sensor for detecting the cutting depth.
The bottom of the protection trolley is provided with a traversing mechanism, the traversing mechanism comprises a supporting leg connected with the protection trolley through a jacking mechanism and a sliding rail connected with the bottom of the supporting leg in a sliding fit manner, the jacking mechanism can drive the supporting leg and the sliding rail to be lifted to a position higher than the bottom of the travelling mechanism in a contracted state, and the sliding rail can be supported to the ground and lifted up the protection trolley in an extended state; and a transverse moving driving mechanism for driving the support leg to move along the slide rail is arranged between the slide rail and the support leg.
The tunnel widening driving protection construction device is arranged in a tunnel needing widening, the tunnel is divided into a protection passing area and a widening construction area along the width direction of the tunnel, an original concrete lining of the tunnel in the widening construction area is cut by a cutting mechanism arranged on a protection wall, and then the widening is excavated and widened to the required tunnel width at one side of the tunnel in the widening construction area by using widening excavating equipment; and (3) forward pushing the tunnel widening driving protection construction device, and then finishing and subsequently constructing the tunnel which is subjected to widening excavation.
In the process of finishing and subsequent construction of the tunnel, protective equipment is adopted to protect a driving channel below.
The beneficial effects of the invention are as follows: the protection wall can be used for supporting the top of the tunnel to prevent collapse, and the protection wall is used for separating the widened construction area from the protection traffic area. The vehicle passes and forms double-deck protection by protection wall and protection platform truck to guarantee driving safety to reduce the influence of construction noise etc. to passing personnel. Moreover, after being isolated by the protective wall, constructors who carry out operations such as on-site command and control in the protective passing area can be protected by the protective wall, so that damages to broken stones and the like in the widened construction area are avoided. The protection trolley is arranged on one side of the tunnel and can excavate and widen the tunnel to the other side of the tunnel, so that a widened construction area can be ensured to have a larger construction space, and excavating equipment can conveniently excavate and construct. The cutting mechanism is additionally arranged on the protective wall to cut the original lining of the tunnel, and compared with the arrangement of an independent cutting machine, the cutting machine occupies less space and is easier to unfold and construct. The protection trolley is connected with the protection wall, so that the lateral tension of the cutting structure to the protection wall can be balanced, the structural stability of the protection wall is ensured, and the cutting mechanism is stably supported.
Drawings
FIG. 1 is a schematic diagram of the arrangement of the tunnel widening driving protection construction device in a tunnel.
Fig. 2 is a schematic side structural view of the tunnel widening driving protection construction device of the present invention.
Fig. 3 is a schematic view showing an embodiment of the cooperation connection relationship between the cutting mechanism and the walking rail on the guard wall.
Fig. 4 is a schematic view of an embodiment of the present invention in which a traversing mechanism is provided at one end of the protective trolley.
Fig. 5 is a schematic structural view of the traversing mechanism of the present invention.
The marks in the figure: 1. tunnel, 2, protection trolley, 3, protection wall, 4, protection passing area, 5, widening construction area, 6, supporting mechanism, 601, supporting roof, 602, elevating mechanism, 7, cutting mechanism, 701, circumferential cutting mechanism, 702, longitudinal cutting mechanism, 703, slewing mechanism, 704, supporting arm, 705, telescopic arm, 706, cutting saw, 707, mount pad, 8, running mechanism, 9, running track, 10, running pulley, 11, vertical climbing mechanism, 12, traversing mechanism, 121, climbing mechanism, 122, landing leg, 123, slide rail, 124, traversing actuating mechanism.
Detailed Description
The technical scheme of the invention is clearly and completely described below with reference to the accompanying drawings and the specific embodiments. The specific matters listed in the following examples are not limited to the technical features necessary for solving the technical problems of the technical solutions described in the claims. Meanwhile, the list is only a part of embodiments of the present invention, but not all embodiments.
As shown in fig. 1, the tunnel widening traveling crane protection construction device of the present invention includes a protection trolley 2 and a protection wall 3. The protection trolley 2 extends along the length direction of the tunnel and comprises a gate-shaped frame structure, a protection plate is arranged on the gate-shaped frame structure, and a driving channel for vehicle passing is formed below the gate-shaped frame structure in a surrounding mode. The guard plate can protect the traffic safety. The protection trolley 2 outside of the gate-type frame structure is provided with structures such as a cat ladder, an operation platform, a guardrail and the like, so that constructors can pass through and perform equipment operation. The protection trolley 2 is arranged at one side of the tunnel 1, and a protection wall 3 is arranged at the side surface of the protection trolley 2. The protective wall 3 likewise extends in the longitudinal direction of the tunnel, dividing the tunnel 1 in its width direction into a protective traffic zone 4 and a widened construction zone 5. The widening excavation of the tunnel is mainly carried out in the widening construction area 5, the protection trolley 2 is positioned in the protection passing area 4, and the protection trolley 2 is separated from the widening construction area 5 at the other side of the tunnel by the protection wall 3, so that the driving safety is further improved.
As shown in fig. 1, a supporting mechanism 6 is arranged above the protective wall 3, and the supporting mechanism 6 comprises a supporting top plate 601 and a lifting mechanism 602. The lifting mechanism 602 is arranged on the protective wall 3, and can adopt a hydraulic cylinder, a threaded screw rod and other structural forms. The supporting roof 601 is connected to the upper end of the elevating mechanism 602, and is driven to be elevated by the elevating mechanism 602 for supporting on the top of the tunnel to prevent collapse of the tunnel.
The side wall of the protective wall 3 facing the widening construction area 5 is provided with a cutting mechanism 7, and the cutting mechanism 7 is telescopic and is used for cutting the wall surface of the tunnel so as to facilitate excavation widening construction. In the embodiment shown in fig. 1, the cutting mechanism 7 comprises a circumferential cutting mechanism 701 for cutting in the circumferential direction of the tunnel and a longitudinal cutting mechanism 702 for cutting in the direction of extension of the tunnel. The annular cutting mechanism 701 and the longitudinal cutting mechanism 702 are respectively provided with a rotary mechanism 703, and the rotary mechanism 703 can drive the rotary mechanism 703 to deflect so as to adjust the cutting position. The rotation directions of the rotation mechanisms of the annular cutting mechanism 701 and the longitudinal cutting mechanism 702 vertically intersect. The circumferential cutting mechanism 701 and the longitudinal cutting mechanism 702 comprise a supporting arm 704 and a telescopic arm 705, wherein the supporting arm 704 is connected with the slewing mechanism, and the telescopic arm 705 is telescopically connected with the supporting arm 704. The telescopic arm 705 and the supporting arm 704 can be telescopic in a nested sliding connection mode, or the telescopic arm 705 and the supporting arm 704 can be rotationally connected, and the rotation connection angle is controlled by another driving mechanism to realize telescopic. A dicing saw 706 is provided at an end of the extension arm 705 extending outward for cutting the tunnel wall surface.
In one embodiment, not shown, the outwardly extending end of the telescoping arm 705 is provided with a sensor to control the depth of cut. The sensor may be, for example, a laser ranging sensor, with the depth of cut being controlled by measuring the distance in real time. Or other types of contact sensors, limiting the depth of cut by a predetermined mounting location.
As shown in fig. 2, the protection wall 3 is provided with a running rail 9 extending along the length direction of the tunnel, and a running pulley 10 is cooperatively connected with the running rail 9. The travelling pulley 10 can be matched with a rack on the travelling rail 9 by adopting a gear structure, so that the travelling pulley is driven by a driving mechanism connected with the gear structure to horizontally move along the travelling rail 9. The cutting mechanism 7 may be connected to a travelling block 10, the travelling block 10 being movable along the length of the travelling rail 9 to change the cutting position in the tunnel length direction.
As shown in fig. 3, the travelling block 10 is provided with a vertical climbing mechanism 11, and a mounting seat 707 of the cutting mechanism 7 is arranged on the vertical climbing mechanism 11. The vertical climbing mechanism 11 may comprise a vertical track, and the mounting seat 707 is in sliding fit with the vertical track, and is driven by a driving mechanism such as a threaded screw rod or an oil cylinder to move up and down. The vertical climbing mechanism 11 can also adopt a structure form of a rack which is vertically arranged, and a gear structure meshed with the rack is arranged on the mounting seat 707, so that the vertical climbing mechanism can be driven by the driving mechanism to realize up-and-down movement by means of the cooperation of the gear and the rack. The rotary mechanism of the cutting mechanism 7 and the like are provided on the mount 707 so that the cutting mechanism 7 can be moved up and down along the vertical climbing mechanism 11 to adjust the cutting position.
As shown in fig. 1, the protection wall 3 is connected with the protection trolley 2 in a connection mode by adopting a detachable connection bracket and other structures so as to facilitate the adjustment of equipment. After the protective wall 3 is connected with the protective trolley 2, the protective trolley 2 pulls the protective wall 3 from one side, and the protective wall 3 is supported. When the supporting arm, the telescopic arm and other structures of the cutting mechanism 7 extend forwards for cutting, the weight of the supporting arm, the telescopic arm and other structures can generate a lateral pulling force on the protective wall 3. The lateral tension can be transmitted to the protective trolley 2 through the connection structure between the protective wall 3 and the protective trolley 2, and the lateral tension is balanced by the traction of the protective trolley 2 to the protective wall 3, so that the structural stability of the protective wall 3 is maintained.
As shown in fig. 1 and 2, the bottoms of the protection trolley 2 and the protection wall 3 are respectively provided with a travelling mechanism 8, in the illustrated embodiment, a wheel type structure is adopted, and the wheel type structure is driven by a motor or a hydraulic motor, so that after the excavation and widening of one section of tunnel is completed, the protection trolley 2 and the protection wall 3 are driven to advance, and the next section of tunnel construction is carried out. The bottom of the protection trolley 2 is also provided with a transverse moving mechanism 12 for transversely adjusting the position of the protection trolley 2 in the tunnel by a small margin. As shown in fig. 4 and 5, the traversing mechanism 12 includes a lifting mechanism 121, a leg 122, a slide rail 123, and a traversing driving mechanism 124. The lifting mechanism 121 may adopt a hydraulic cylinder or a screw rod. The supporting leg 122 is connected with the protection trolley 2 through the jacking mechanism 121, and the supporting leg 122 is driven to lift by the jacking mechanism 121. The slide rail 123 extends along the width direction of the protection trolley 2, is connected to the bottom of the leg 122, and can slide relatively therebetween. The sliding rail 123 and the supporting leg 122 can be engaged with each other, so that the sliding rail 123 can be lifted and lowered together with the supporting leg 122. For example, the upper end of the sliding rail 123 is provided with ribs extending to two sides, two sides of the bottom of the supporting leg 122 are provided with buckling edges which can be matched with the ribs, the supporting leg 122 can drive the sliding rail 123 to lift through the matching of the buckling edges and the ribs, and the sliding of the supporting leg 122 along the sliding rail 123 is not affected. The lifting mechanism 121 can drive the supporting legs 122 and the sliding rails 123 to be lifted to a position higher than the bottom of the travelling mechanism 8 in a contracted state, the traversing mechanism 12 is not active at this time, and the travelling mechanism 8 can drive the protective trolley 2 to move forward. The lifting mechanism 121 can drive the legs 122 and the slide rails 123 to move downward in an extended state, so that the slide rails 123 are supported to the ground and the protective trolley 2 is lifted. The lifting can be carried out in a small range, and part of the weight of the protection trolley 2 can act on the sliding rail 123, and the travelling mechanism 8 does not need to be separated from the ground. The lateral movement driving mechanism 124 is connected between the sliding rail 123 and the supporting leg 122, and when the sliding rail 123 is supported to the ground, the supporting leg can be driven to move along the sliding rail through the extension and retraction of the lateral movement driving mechanism 124, so that the small-amplitude lateral movement of the protection trolley 2 is realized. The traversing driving mechanism 124 may be a hydraulic cylinder or the like.
When the traversing mechanism 12 is supported on the ground, the weight of the protection trolley 2 is transferred from the travelling mechanism 8 to the sliding rail 123, so that the protection trolley has better support stability. Therefore, the traversing mechanism 12 also plays a role of positioning support after the predetermined position of the protective carriage 2 is moved. Similarly, a traversing mechanism 12 is also arranged at the bottom of the protective wall 3, which plays a role in transversely moving and positioning and supporting the protective wall 3.
The tunnel widening construction method comprises the steps of firstly arranging the tunnel widening driving protection construction device in a tunnel to be widened, and driving the supporting mechanism 6 above the protection wall 3 to lift and support to the top of the tunnel to form a supporting. The tunnel is divided into a protective passage area and a widened construction area along the width direction by a protective wall 3. Starting from the entrance end of the tunnel, a cutting mechanism arranged on the protective wall is utilized to cut and widen the original concrete lining of the tunnel in the construction area. The cutting mechanism is used for excavating the tunnel wall which is cut by the concrete lining by using widening excavating equipment such as a rock drill and the like while advancing and cutting along the length direction of the tunnel, and excavating and widening the tunnel wall to the side of the tunnel to the required tunnel width. After the excavation and widening of the tunnel with a certain length are completed, the supporting mechanism 6 above the protective wall 3 in the section of tunnel is lowered, and the subsequent construction equipment enters the tunnel to finish the tunnel after the excavation and widening is completed, and then the construction such as waterproof plates, section lining and the like are paved. In the process of finishing and subsequent construction of the tunnel, protective equipment is adopted to protect the lower safety. The protective equipment may be a construction trolley which can play a role in shielding and protecting the lower side, and may be arranged above the protective trolley 2 and the protective wall 3 in a straddling manner. The guardrails, the climbing ladders and the like above the protection trolley 2 can be retracted or lowered, and the entering of subsequent equipment is not affected. After the tunnel over the whole length of the protection trolley 2 and the protection wall 3 is excavated and widened, the protection trolley 2 and the protection wall 3 are pushed forward to continue the next section of tunnel widening construction. In the forward pushing process of the protective trolley 2 and the protective wall 3, the cutting mechanism 7 is controlled to move towards the rear of the protective wall 3 along the walking track 9, so that the cyclic construction of the cutting mechanism 7 is realized.
The above description of the specific embodiments is only for aiding in understanding the technical concept of the present invention and its core idea, and although the technical solution has been described and illustrated using specific preferred embodiments, it should not be construed as limiting the present invention itself. Workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit of the invention. Such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a tunnel expands driving protection construction equipment, includes and is used for forming the protection platform truck (2) of driving passageway in order to protect traffic vehicle under it along tunnel length direction extension, protection platform truck (2) skew tunnel (1) one side setting, its characterized in that: the side of the protection trolley (2) is provided with a protection wall (3), a supporting mechanism (6) used for supporting the top of the tunnel is arranged above the protection wall (3), the protection wall (3) separates the protection trolley (2) from the space on the other side of the tunnel, and the tunnel (1) is divided into a protection passing area (4) containing the protection trolley and a widening construction area (5) used for widening the construction of excavating equipment by the protection wall (3) along the width direction; the utility model provides a be provided with walking track (9) that extend along tunnel length direction on the lateral wall of widening construction zone (5) of protection wall (3), the cooperation is connected with walking coaster (10) on walking track (9), is equipped with cutting mechanism (7) that are used for cutting tunnel wall on walking coaster (10), protection wall (3) be connected with protection platform truck (2), pull protection wall (3) with balanced cutting mechanism (7) to the side direction pulling force of protection wall (3) through protection platform truck (2).
2. The tunnel widening traveling crane protection construction device as set forth in claim 1, wherein: the bottoms of the protection trolley (2) and the protection wall (3) are provided with a travelling mechanism (8).
3. The tunnel widening traveling crane protection construction device as set forth in claim 1, wherein: the supporting mechanism (6) comprises a supporting top plate (601) used for supporting the top of the tunnel and a lifting mechanism (602) used for driving the supporting top plate (601) to lift.
4. The tunnel widening traveling crane protection construction device as set forth in claim 1, wherein: the travelling pulley (10) is provided with a vertical climbing mechanism (11), and the cutting mechanism (7) is arranged on the vertical climbing mechanism (11) and can move up and down along the vertical climbing mechanism (11).
5. The tunnel widening traveling crane protection construction device as set forth in claim 1, wherein: the cutting mechanism (7) comprises a circumferential cutting mechanism (701) for cutting along the circumferential direction of a tunnel and a longitudinal cutting mechanism (702) for cutting along the extending direction of the tunnel, wherein the circumferential cutting mechanism (701) and the longitudinal cutting mechanism (702) comprise a supporting arm (704) capable of being driven to deflect by a slewing mechanism (703) and a telescopic arm (705) which is connected to the supporting arm (704) in a telescopic manner, and a cutting saw (706) is arranged at one end of the telescopic arm (705) extending outwards.
6. The tunnel widening traveling crane protection construction device as recited in claim 5, further comprising: the rotation directions of the annular cutting mechanism (701) and the longitudinal cutting mechanism (702) are vertically intersected.
7. The tunnel widening traveling crane protection construction device as recited in claim 5, further comprising: one end of the telescopic arm (705) extending outwards is provided with a sensor for detecting the cutting depth.
8. The tunnel widening traveling crane protection construction device as set forth in claim 2, wherein: the bottom of the protection trolley (2) is provided with a traversing mechanism (12), the traversing mechanism (12) comprises a supporting leg (122) connected with the protection trolley (2) through a jacking mechanism (121) and a sliding rail (123) connected with the bottom of the supporting leg (122) in a sliding fit manner, the jacking mechanism (121) can drive the supporting leg (122) and the sliding rail (123) to be lifted to a position higher than the bottom of the travelling mechanism (8) in a contracted state, and the sliding rail (123) can be supported to the ground and lift the protection trolley (2) in an extended state; and a transverse movement driving mechanism (124) for driving the support leg to move along the slide rail is arranged between the slide rail (123) and the support leg (122).
9. A tunnel widening construction method is characterized in that: the tunnel widening driving protection construction device is arranged in a tunnel to be widened, the tunnel is divided into a protection passing area and a widening construction area along the width direction, an original concrete lining of the tunnel in the widening construction area is cut by a cutting mechanism arranged on a protection wall, and then the widening excavation equipment is utilized to excavate and widen the tunnel to the required tunnel width at one side of the tunnel in the widening construction area; after the widening excavation of the tunnel with a certain length is completed, lowering a supporting mechanism above a protective wall in the section of tunnel, and then finishing and subsequently constructing the tunnel with the widening excavation completed; after the tunnel on the whole length of the protection trolley and the protection wall is excavated and widened, the protection trolley and the protection wall are pushed forward to continue the next section of tunnel widening construction.
10. The tunnel widening construction method as recited in claim 9, wherein: in the process of finishing and subsequent construction of the tunnel, protective equipment is adopted to protect the lower safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311774187.6A CN117449864B (en) | 2023-12-22 | 2023-12-22 | Tunnel widening driving protection construction device and tunnel widening construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311774187.6A CN117449864B (en) | 2023-12-22 | 2023-12-22 | Tunnel widening driving protection construction device and tunnel widening construction method |
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| CN117449864A true CN117449864A (en) | 2024-01-26 |
| CN117449864B CN117449864B (en) | 2024-03-05 |
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