CN214741382U - Tunnel preliminary bracing well pilot tunnel bow member grudging post device - Google Patents
Tunnel preliminary bracing well pilot tunnel bow member grudging post device Download PDFInfo
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- CN214741382U CN214741382U CN202120724320.7U CN202120724320U CN214741382U CN 214741382 U CN214741382 U CN 214741382U CN 202120724320 U CN202120724320 U CN 202120724320U CN 214741382 U CN214741382 U CN 214741382U
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Abstract
The utility model discloses a pilot tunnel bow member grudging post device in tunnel preliminary bracing, including bow member groove, braced system and connector, the bow member groove includes riser and floor, the riser includes first riser and second riser, and first riser and second riser are parallel and are set up at the interval predetermined distance side by side, and the floor is located between first riser and the second riser, and the floor both ends are fixed connection first riser and second riser lower part respectively; the supporting system comprises a lifting mechanism, a rotating mechanism and a mounting seat, the lifting mechanism is vertically arranged on the supporting surface, the mounting seat is fixedly connected with the top end of the lifting mechanism through screws, and the rotating mechanism is fixed on the mounting seat; the connector is located the first riser outside and is connected with bow member groove fixed connection to adopt the screw to pass through the connecting rod and connect rotary mechanism. The utility model provides a well pilot tunnel vault position operation space less, can not adopt grudging post and operation, and artifical grudging post intensity of labour is big, inefficiency and the problem that danger coefficient is high.
Description
Technical Field
The utility model belongs to the technical field of the tunnel engineering, concretely relates to pilot hole bow member grudging post device in tunnel preliminary bracing.
Background
The double-side-wall pit guiding method is a construction technology for excavating and supporting at the same time, and the principle is as follows: dividing the whole large section of the tunnel into a left small section, a middle small section and a right small section by using two middle partition walls for construction, wherein the left pilot tunnel and the right pilot tunnel move first, and the middle section follows the left pilot tunnel and the right pilot tunnel; after the primary support inverted arch is looped, the temporary supports of the pilot tunnels on the two sides are removed to form a full section. The guide holes on the two sides are in inverted goose egg shapes, so that the vault is controlled to sink.
The double-side-wall pit guiding method is suitable for driving tunnel excavation under the condition of poor surrounding rock V-level surrounding rock, and can control ground surface subsidence and keep tunnel face stability by adopting the double-side-wall pit guiding method during shallow-buried large-span tunnel construction. On the premise of higher requirements on traffic, the tunnel is widely applied to three-lane and four-lane tunnels of expressways and municipal roads.
The double-side-wall pilot tunnel method is safe in construction, but is low in speed and high in cost, the partition area of each pilot tunnel is small, especially the construction of a middle pilot tunnel is difficult, large-scale mechanical construction of a step method and full-face excavation is difficult to achieve, the main part is an artificial vertical frame, the mechanical cooperation is auxiliary, great risks exist in both construction quality and construction safety, the artificial construction cycle time of the middle pilot tunnel is long, the integral tunneling speed of a tunnel is severely limited, and the bottleneck of construction control progress of the double-side-wall pilot tunnel method is formed.
In the road engineering, the tunnel is in a bidirectional 8-lane separated tunnel, the inner contour of the lining of the left line and the right line of the tunnel is 11.45m high and 18.79m wide, the total length of the left line of the tunnel is 1983m, the total length of the right line is 1769m, the geological structure of the tunnel is a cattle horn slope anticline, the grades of surrounding rocks are 4 and 5, wherein the length of the 5-grade surrounding rocks is 936m, which accounts for 49.9 percent of the total length of the tunnel, and the tunnel is excavated by adopting a tunnel entrance section Z5q and Z5-grade surrounding rock double-side-wall pit guiding method. Although the whole excavation width of the tunnel is large, the clear width of excavation of the middle pilot tunnel is only 4.12m, the Z5 q-level support belongs to a shallow-buried reinforcing section, surrounding rocks are generally poor, the middle pilot tunnel is excavated by a reserved core soil method, the operating space of the vault position is small and is only about 1m, a vertical frame machine cannot be used for vertical frame operation, the operation can only be carried out by adopting a manual vertical frame mode, the operation labor intensity is high, the labor time is long, and the efficacy is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pilot tunnel bow member grudging post device and construction method in tunnel preliminary bracing, pilot tunnel bow member centering pilot tunnel forms to strut in using mechanical installation for pilot tunnel construction working strength is high, cycle time is long scheduling problem in solving the double-side wall pilot tunnel method.
The utility model discloses a technical scheme be, a pilot tunnel bow member grudging post device in tunnel preliminary bracing, include:
the arch frame groove comprises a vertical plate and a rib plate, the vertical plate comprises a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate are arranged in parallel at a preset interval, the rib plate is positioned between the first vertical plate and the second vertical plate, and two ends of the rib plate are respectively and fixedly connected with the lower parts of the first vertical plate and the second vertical plate;
the supporting system comprises a lifting mechanism, a rotating mechanism and a mounting seat, wherein the lifting mechanism is vertically arranged on a supporting surface, the mounting seat is fixedly connected with the top end of the lifting mechanism through a screw, and the rotating mechanism is fixed on the mounting seat;
and the connector is positioned on the outer side of the first vertical plate and fixedly connected with the arch frame groove, and is connected with the rotating mechanism through a connecting rod by screws.
Further, elevating system includes the base, base top fixed connection pneumatic cylinder, and the hydraulic pump is connected to the pneumatic cylinder, and the hydraulic pump below sets up oil tank and the oil tank is fixed on the base.
Furthermore, rotary mechanism comprises motor and motor output shaft connecting seat, and the output shaft of motor pegs graft inside motor output shaft connecting seat, and motor output shaft connecting seat bottom fixed connection flange, flange and mount pad fixed connection.
Furthermore, the ribbed plates comprise a first ribbed plate and a second ribbed plate, the first ribbed plate and the second ribbed plate are respectively and symmetrically arranged at the front end and the rear end of the first vertical plate and the rear end of the second vertical plate, and the first ribbed plate and the second ribbed plate are vertically arranged.
Furthermore, the rib plate is of a transverse H-shaped structure, the end face of the right side of the rib plate is welded with the first vertical plate, and the end face of the left side of the rib plate is welded with the second vertical plate.
Further, the distance between the first vertical plate and the second vertical plate is matched with the width of the arch frame.
Furthermore, a plurality of positioning holes are transversely formed in the upper portions of the first vertical plate and the second vertical plate, and positioning pins are arranged in the positioning holes in a matched mode.
Further, the connector includes bottom plate and curb plate, bottom plate top and first riser bottom fixed connection, the curb plate is equipped with two, perpendicular bottom plate relatively fixed respectively on the bottom plate, corresponds on two blocks of curb plates and offers the mounting hole, and the mounting hole matches and is equipped with the fixed pin.
Further, the junction between connector bottom plate and the curb plate is equipped with the reinforcing plate, the reinforcing plate includes the upper portion reinforcing plate, sets up in the junction of bottom plate and first riser, and the middle part reinforcing plate sets up in the middle part of bottom plate and curb plate, and the lower part reinforcing plate sets up in the lower part of bottom plate and curb plate.
Further, the mounting holes are respectively formed between the upper reinforcing plate and the middle reinforcing plate, and between the middle reinforcing plate and the lower reinforcing plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the utility model provides an arch frame grudging post device simple structure, easily setting, it is not high to the service environment requirement, connect the arch frame through the step fast down during the use, directly lift to the vault through elevating system, realize the quick installation of well pilot tunnel bow member after rotating through rotary mechanism fine setting, solved the present pilot tunnel vault position operating space little, can't use the grudging post machine to carry out the grudging post operation, and artifical grudging post operation intensity of labour is big, problem with low efficiency, the utility model discloses when quickening cycle time, reduced workman's operation intensity and operating personnel quantity, simultaneously because mechanical operation, only need artifical simple cooperation, reduced the risk that the workman is injured in artifical grudging post process;
2) the utility model adopts a supporting system consisting of a lifting mechanism and a rotating mechanism, the lifting mechanism adopts an electric drive hydraulic pump to control a hydraulic cylinder to complete lifting movement, the mechanism in a hole is not depended on, and the rotating mechanism realizes accurate installation of an arch frame after fine adjustment through the rotation of a motor;
3) the rib plates are respectively fixed at the front ends and the rear ends of the first vertical plate and the second vertical plate by adopting a first rib plate and a second rib plate so as to achieve the purpose of stably and firmly connecting the first vertical plate and the second vertical plate, and the first rib plate and the second rib plate are symmetrically and vertically arranged so as to be beneficial to forming support for the arc-shaped arch center;
4) the rib plate is in a transverse I-shaped structure, so that the connecting area of the left end face and the right end face of the rib plate, the second vertical plate and the first vertical plate is increased, and the connecting firmness is enhanced;
5) the distance between the first vertical plate and the second vertical plate is matched with the width of the arch centering, so that the arch centering is just placed in the arch centering groove, and the arch centering is lifted;
6) positioning holes are transversely formed in the upper parts of the first vertical plate and the second vertical plate, correspond to the connecting holes of the arch centering, and penetrate through the positioning holes and the connecting holes in the vertical plate and the arch centering by utilizing the positioning pins so as to prevent the arch centering from sliding in the lifting process;
7) the junction between connector bottom plate and the curb plate is equipped with the reinforcing plate, strengthens the firm in connection nature of bottom plate and curb plate, and increase connector intensity ensures that the connector bears the operating strength of digging the arm to the connector.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the arch truss groove of the present invention;
FIG. 3 is a schematic view of the rib plate structure of the present invention;
FIG. 4 is a schematic view of the rotary structure of the present invention;
fig. 5 is a schematic view of the structure of the connector of the present invention.
The figure is marked with: 1. the device comprises an arch frame groove 11, vertical plates 111, first vertical plates 112, second vertical plates 113, positioning holes 114, positioning pins 12, ribbed plates 121, first ribbed plates 122 and second ribbed plates;
2. the device comprises a supporting system, 21, a lifting mechanism, 211, a base, 212, traveling wheels, 213, hydraulic cylinders, 214, hydraulic pumps, 215 and an oil tank; 22. the rotating mechanism 221, the motor 222, the motor output shaft connecting seat 223 and the flange;
3. the connecting head 31, the bottom plate 32, the side plate 321, the mounting hole 322, the fixing pin 33, the reinforcing plate 331, the upper reinforcing plate 332, the middle reinforcing plate 333 and the lower reinforcing plate;
4. a connecting rod.
Detailed Description
The invention will be further explained with reference to the drawings attached to the specification in order to facilitate better understanding by those skilled in the art.
Referring to fig. 1-5, a pilot tunnel arch centering device for preliminary tunnel support includes an arch groove 1, a support system 2, a connector 3 and a connecting rod 4.
The arch truss groove 1 comprises a vertical plate 11 and a rib plate 12, the vertical plate 11 comprises a first vertical plate 111 and a second vertical plate 112 which are two steel plates with the same structure and size, the thickness of the vertical plate 11 is not less than 5cm, the vertical plate has higher strength, and the first vertical plate 111 and the second vertical plate 112 are arranged in parallel at a preset interval; the ribbed plate 12 is located between the first vertical plate 111 and the second vertical plate 112, and two ends of the ribbed plate 12 are respectively and fixedly connected with the lower parts of the first vertical plate 111 and the second vertical plate 112. In this embodiment, the rib 12 includes a first rib 121 and a second rib 122, the first rib 121 and the second rib 122 are respectively symmetrically disposed at the front end and the rear end of the first upright plate 111 and the second upright plate 112 to stably and firmly connect the first upright plate 111 and the second upright plate 112, so as to keep the structural balance, and the first rib 121 and the second rib 122 are vertically disposed, which is beneficial to forming a support for an arc arch center.
Further, the rib plate 12 is in a transverse i-shaped structure, the end face of the right side of the rib plate 12 is welded to the first vertical plate 111, the end face of the left side of the rib plate 12 is welded to the second vertical plate 112, the rib plate 12 in the i-shaped structure increases the contact area between the rib plate 12 and the first vertical plate 111 as well as the contact area between the rib plate 12 and the second vertical plate 112, the connection firmness is enhanced, and the welding is facilitated.
The first vertical plate 111, the second vertical plate 112 and the rib plate 12 form an arch center groove 1 with a preset depth, the distance between the first vertical plate 111 and the second vertical plate 112 is matched with the width of an arch center, the arch center is transversely arranged in the arch center groove 1, and the arch center is clamped and lifted through the arch center groove 1.
In order to prevent the slippage of the arch centering during the lifting process, at least two positioning holes 113 are transversely arranged on the upper portions of the first vertical plate 111 and the second vertical plate 112, the positioning holes 113 correspond to the connecting holes of the arch centering, positioning pins 114 are arranged in a matching manner with the positioning holes 112, the positioning pins 114 penetrate through the positioning holes 113 and the connecting holes, and the arch centering is fixed on the vertical plate 11.
The connector 3 is located on the outer side of the first vertical plate 111 and fixedly connected with the first vertical plate 111, and is connected with the rotating mechanism 22 through a connecting rod 4 by screws. Connector 3 includes bottom plate 31 and curb plate 32, bottom plate 31 top and the 111 bottom fixed connection of first riser, curb plate 32 are equipped with two, perpendicular bottom plate 31 relatively fixed deviates from one side of first riser 111 on bottom plate 31 respectively, and bottom plate 31 constitutes U type groove structure with two curb plates 32, and the junction between bottom plate 31 of connector 3 and the curb plate 32 is equipped with reinforcing plate 33, specifically, reinforcing plate 33 includes upper portion reinforcing plate 331, sets up the junction at bottom plate 31 and first riser 111, middle part reinforcing plate 332, sets up the middle part at bottom plate 31 and curb plate 32, lower part reinforcing plate 333, sets up the lower part at bottom plate 31 and curb plate 32, with the connection steadiness of increase bottom plate 31 and first riser 111, bottom plate 31 and curb plate 32, increase connector 3 intensity. In addition, the two side plates 32 are correspondingly provided with mounting holes 321, the mounting holes 321 are respectively arranged between the upper reinforcing plate 331 and the middle reinforcing plate 332, between the middle reinforcing plate 332 and between the lower reinforcing plate 333, the mounting holes 321 are matched with fixing pins 322, and the connecting rod 4 is fixedly connected through the fixing pins 322 after being inserted into the connecting head 3.
The utility model discloses a theory of operation and use do:
after blasting excavation of the middle pilot tunnel is completed, timely conveying tunnel face dregs, leveling roads after completion, cleaning tunnel face dangerous rocks, timely applying primary spraying concrete, connecting an arch center outside the middle pilot tunnel, after the arch center is connected, hoisting the arch center by an excavator to enable the arch center to be upright, directly supporting and lifting the arch center by utilizing an arch center groove 1, fixing the arch center by penetrating a positioning pin 113 through a positioning hole 114 and a connecting hole of the arch center, then starting a lifting mechanism 21 to lift the arch center to the tunnel face of the middle pilot tunnel, finely adjusting the position of the arch center by controlling a rotating mechanism 22, connecting bolts manually after completion, rotating and reinforcing by a wrench, after installation and connection of the arch center are completed, timely pushing out the excavator, and starting anchor rod operation work of a system anchor rod construction team to enter a field.
The utility model discloses can be less in vault position operating space, only about 1m, use when unable use grudging post machine carries out the grudging post operation, solve the artifical grudging post intensity of labour of prior art big, the inefficiency, dangerous high problem. The device of the utility model is small and exquisite, realizes the quick installation or disassembly of the device, is flexible and convenient, and does not occupy the cycle time; through connect the bow member fast at the lower step, directly lift to the vault, can finely tune the rotation, the quick installation of guide hole bow member in realizing for when cycle time, reduced workman's operation intensity and operation personnel quantity, simultaneously because mechanical operation only needs artifical simple cooperation, reduced the injured risk of workman in the middle of artifical grudging post.
The embodiments described above are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a pilot tunnel bow member grudging post device in tunnel preliminary bracing which characterized in that includes:
the arch truss trough (1) comprises a vertical plate (11) and a rib plate (12), wherein the vertical plate (11) comprises a first vertical plate (111) and a second vertical plate (112), the first vertical plate (111) and the second vertical plate (112) are arranged in parallel at a preset interval, the rib plate (12) is positioned between the first vertical plate (111) and the second vertical plate (112), and two ends of the rib plate (12) are respectively and fixedly connected with the lower parts of the first vertical plate (111) and the second vertical plate (112);
the supporting system (2) comprises a lifting mechanism (21), a rotating mechanism (22) and a mounting seat (23), the lifting mechanism (21) is vertically arranged on a supporting surface, the mounting seat (23) is fixedly connected with the top end of the lifting mechanism (21) through a screw, and the rotating mechanism (22) is fixed on the mounting seat (23);
the connector (3) is located on the outer side of the first vertical plate (111) and fixedly connected with the first vertical plate (111), and is connected with the rotating mechanism (22) through a connecting rod (4) by screws.
2. The pilot tunnel arch erecting device in tunnel preliminary bracing according to claim 1, wherein: elevating system (21) includes base (211), and the base bottom is equipped with walking wheel (212) base (211) top fixed connection pneumatic cylinder (213), and hydraulic pump (214) is connected in pneumatic cylinder (213), and hydraulic pump (214) below sets up oil tank (215) and fixes on the base.
3. The pilot tunnel arch erecting device in tunnel preliminary bracing according to claim 1, wherein: the rotating mechanism (22) is composed of a motor (221) and a motor output shaft connecting seat (222), an output shaft of the motor (221) is inserted into the motor output shaft connecting seat (222), a flange (223) is fixedly connected to the bottom of the motor output shaft connecting seat (222), and the flange (223) is fixedly connected with the mounting seat (23).
4. The pilot tunnel arch erecting device in tunnel preliminary bracing according to claim 1, wherein: the rib plate (12) comprises a first rib plate (121) and a second rib plate (122), the first rib plate (121) and the second rib plate (122) are symmetrically arranged at the front end and the rear end of the first vertical plate (111) and the second vertical plate (112) respectively, and the first rib plate (121) and the second rib plate (122) are vertically arranged.
5. The pilot tunnel arch erecting device in tunnel preliminary bracing according to claim 1, wherein: the rib plate (12) is of a transverse H-shaped structure, the end face of the right side of the rib plate (12) is welded with the first vertical plate (111), and the end face of the left side of the rib plate (12) is welded with the second vertical plate (112).
6. The pilot tunnel arch erecting device in tunnel preliminary bracing according to claim 1, wherein: the distance between the first vertical plate (111) and the second vertical plate (112) is matched with the width of the arch frame.
7. The pilot tunnel arch erecting device in tunnel preliminary bracing according to claim 1, wherein: a plurality of positioning holes (113) are transversely formed in the upper portions of the first vertical plate (111) and the second vertical plate (112), and positioning pins (114) are arranged in matching positioning holes (113).
8. The pilot tunnel arch erecting device in tunnel preliminary bracing according to claim 1, wherein: connector (3) are including bottom plate (31) and curb plate (32), bottom plate (31) top and first riser (111) bottom fixed connection, curb plate (32) are equipped with two, perpendicular bottom plate (31) relatively fixed respectively on bottom plate (31), correspond on two curb plate (32) and offer mounting hole (321), and mounting hole (321) match and are equipped with fixed pin (322).
9. The pilot tunnel arch erecting device in preliminary tunnel support according to claim 8, wherein: the reinforced plate (33) is arranged at the joint between the bottom plate (31) and the side plate (32), the reinforced plate (33) comprises an upper reinforced plate (331) arranged at the joint between the bottom plate (31) and the first vertical plate (111), a middle reinforced plate (332) arranged at the middle part between the bottom plate (31) and the side plate (32), and a lower reinforced plate (333) arranged at the lower part between the bottom plate (31) and the side plate (32).
10. The pilot tunnel arch erecting device in preliminary tunnel support according to claim 9, wherein: the mounting holes (321) are respectively arranged between the upper reinforcing plate (331) and the middle reinforcing plate (332), and between the middle reinforcing plate (332) and the lower reinforcing plate (333).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120724320.7U CN214741382U (en) | 2021-04-09 | 2021-04-09 | Tunnel preliminary bracing well pilot tunnel bow member grudging post device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120724320.7U CN214741382U (en) | 2021-04-09 | 2021-04-09 | Tunnel preliminary bracing well pilot tunnel bow member grudging post device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214741382U true CN214741382U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120724320.7U Active CN214741382U (en) | 2021-04-09 | 2021-04-09 | Tunnel preliminary bracing well pilot tunnel bow member grudging post device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214741382U (en) |
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2021
- 2021-04-09 CN CN202120724320.7U patent/CN214741382U/en active Active
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