CN212561104U - Telescopic nose girder mechanism of adjustable angle - Google Patents
Telescopic nose girder mechanism of adjustable angle Download PDFInfo
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- CN212561104U CN212561104U CN202021047351.5U CN202021047351U CN212561104U CN 212561104 U CN212561104 U CN 212561104U CN 202021047351 U CN202021047351 U CN 202021047351U CN 212561104 U CN212561104 U CN 212561104U
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Abstract
The utility model provides an angle-adjustable telescopic guide beam mechanism, which comprises a guide beam, an auxiliary supporting leg and a tug mechanism, wherein the auxiliary supporting leg is positioned at the front end of the guide beam, and the guide beam is connected with an auxiliary supporting leg beam through a movable hinged support; the tug mechanism is arranged at the front end of a main beam bearing main beam in the main beam assembly and can move up and down, the auxiliary leg structure is H-shaped and comprises two telescopic vertical columns and an auxiliary leg cross beam fixed between the two telescopic vertical columns, the guide beam is positioned above the auxiliary leg cross beam, and the angle between the guide beam and the auxiliary leg can be adjusted by moving the telescopic vertical columns up and down; the tug mechanism comprises more than one group of tugs, a tug beam, a loop bar, a tug oil cylinder and a driving mechanism. This nose girder mechanism installs in removing the landing stage, can adjust the angle of nose girder according to the tunnel the place ahead invert excavation regional specific situation, also can not influence the flexible of nose girder simultaneously, and its convenient to use, and can further improve the efficiency of construction.
Description
Technical Field
The utility model provides a nose girder mechanism that is arranged in large-span walking removal landing stage, especially relates to an adjustable angle's telescopic nose girder mechanism, belongs to tunnel construction technical field.
Background
In tunnel construction, a mechanical rapid construction technology system is not completed, and many key technical problems are not broken through, so that the construction progress is greatly different, and the accident potential is more. The main procedures of tunnel construction (tunnel excavation, preliminary bracing, inverted arch construction, waterproof board paving and hanging, secondary lining concrete pouring, ditch cable trough construction and the like) are comprehensively analyzed, and the fact that the time of each construction procedure at the position of a movable trestle is long, partial procedures cannot be synchronously constructed, the tunnel construction progress is severely limited, and the procedures become key procedures influencing tunnel construction. Specifically, the mobile trestle is mainly used for inverted arch construction in a tunnel and vehicle passing. At present, the tunnel construction movable trestle is mainly a 24m trestle, and vehicles pass above the trestle when the inverted arch is constructed and lined. When the existing movable trestle has inverted arch lining or excavation, the trestle cannot move forwards, and a dump truck cannot pass through, so that the connection of each process of inverted arch construction and the inverted arch construction efficiency are influenced.
Aiming at the difficult problem of key process layout at a mobile trestle, the Chinese invention patent CN201910786343.8 discloses a tunnel inverted arch partition and divided process streamlined construction method, and provides a large-span telescopic mobile trestle which can provide three operation intervals of inverted arch excavation and support, inverted arch lining and inverted arch filling construction, and each process can form flow operation and parallel operation, thereby effectively accelerating the inverted arch construction progress, shortening the follow-up time of a two-lining trolley and improving the tunnel construction efficiency. Meanwhile, the equipment also meets the requirement of the safety step pitch of tunnel construction.
The tail end of the guide beam mechanism in the device is installed in the track in the girder through the walking wheel, the fixed tow boat that sets up and the telescopic machanism of installation on the preceding landing leg, telescopic machanism drive guide beam stretches out and draws back along track and tow boat level, the fixed supplementary landing leg that sets up in head end below of guide beam supports, consequently, in the use, the guide beam can only work under the horizontality, can't adjust the angle of guide beam according to the regional concrete situation of tunnel the place ahead inverted arch excavation, thereby the current convenience to this regional excavation efficiency and the car of slagging tap has brought unfavorable influence.
Disclosure of Invention
The utility model discloses to not enough among the above-mentioned background art, provide a but angle regulation's telescopic nose girder mechanism, this nose girder mechanism is installed in removing the landing stage, can adjust the angle of nose girder according to the tunnel the place ahead invert excavation regional concrete situation, also can not influence the flexible of nose girder simultaneously, its convenient to use, and can further improve the efficiency of construction.
Realize the utility model discloses the technical scheme that above-mentioned purpose adopted does:
an angle-adjustable telescopic guide beam mechanism at least comprises a guide beam, an auxiliary supporting leg and a tug mechanism, wherein the tail end of the guide beam is provided with a roller mechanism, and the roller mechanism can move on a track in a movable trestle; the auxiliary supporting leg is positioned at the front end of the guide beam, and the guide beam is connected with the auxiliary supporting leg beam through the movable hinged support; the tug mechanism is arranged at the front end of a main beam bearing main beam in the main beam assembly and can move up and down, the auxiliary leg structure is H-shaped and comprises two telescopic vertical columns and an auxiliary leg cross beam fixed between the two telescopic vertical columns, the guide beam is positioned above the auxiliary leg cross beam, and the angle between the guide beam and the auxiliary leg can be adjusted by moving the telescopic vertical columns up and down; the tug mechanism comprises more than one group of tug, a tug beam, a loop bar, a tug oil cylinder and a driving mechanism, the loop bar is installed and fixed at the front end of a main beam assembly in the movable trestle, the tug oil cylinder is positioned in the loop bar and drives the loop bar to stretch, the tug beam is connected to the bottom end of the loop bar, the tug is installed on the tug beam and is propped against the bottom surface of the front guide beam, and the driving mechanism is installed on the tug beam and drives the tug to rotate.
The roller mechanism is provided with rollers and a guide device, and the guide beam is guaranteed to move smoothly between the main beams through the guide device.
A movable hinged support is arranged between the auxiliary supporting leg cross beam and the guide beam, and a limiting oil cylinder is arranged between the auxiliary supporting leg cross beam and the movable hinged support on the guide beam, so that a triangular structure is formed among the auxiliary supporting leg cross beam, the guide beam and the guide beam together, and when the guide beam needs to swing up and down, the telescopic upright post of the auxiliary supporting leg is ensured to be always in a vertical state through the telescopic effect of the limiting oil cylinder.
The guide beam consists of two longitudinal beams and a plurality of connecting beams between the two longitudinal beams, and a wheel set supporting rail is arranged below the longitudinal beams and is positioned above the towing wheels; and anti-skid steel bars are laid on the longitudinal beams to form a traffic lane for construction equipment to pass through.
And the front end of the guide beam is provided with an approach bridge, and the approach bridge turnover mechanism is used for realizing the up-and-down turnover.
The utility model provides a but angle regulation's telescopic nose girder mechanism's theory of operation as follows: in the tunnel construction process, when the ground of an inverted arch excavation area is too low and the height of a guide beam needs to be reduced to enable the guide beam to be lowered, firstly, a tug oil cylinder is started to enable the tug oil cylinder to be in a stressed state, then, a jacking oil cylinder is controlled to shrink a telescopic upright column to enable the telescopic upright column to be suspended, then, the front end of the guide beam is reduced in height through extension of the tug oil cylinder, and the telescopic upright column is made to be in contact with the ground through extension of the jacking oil cylinder; after the angle adjustment is finished, the jacking oil cylinder and the limiting oil cylinder are locked, the tug oil cylinder is in an unstressed state, the guide beam is firmly supported, and the slag car can run back and forth on the guide beam. When the ground of an inverted arch excavation area is too high and the height of the guide beam needs to be increased to enable the guide beam to raise the head, the towing wheel oil cylinder is firstly opened to enable the towing wheel oil cylinder to be in a stressed state, the height of the front end of the guide beam is lifted, and after the angle adjustment is finished, the jacking oil cylinder and the limiting oil cylinder are locked to enable the towing wheel oil cylinder to be in an unstressed state. When the guide beam needs to be moved, the guide beam is adjusted to be in a proper state according to the same method, then the limiting oil cylinder and the tug oil cylinder are locked, the jacking oil cylinder contracts, the guide beam is limited by the roller mechanism and the tug at the tail end, the telescopic upright post can be suspended upwards and lifted off the ground, and the tug connected with the driving mechanism can drive the guide beam to move back and forth.
To sum up, the utility model provides a but angle regulation's telescopic nose girder mechanism main advantage is the angle that can adjust the nose girder according to the tunnel the place ahead invert excavation regional concrete situation, convenient to use, and can further improve the efficiency of construction.
Drawings
FIG. 1 is a schematic view of the overall structure of an adjustable angle telescopic guide beam mechanism;
FIG. 2 is a schematic view of a tug mechanism;
FIG. 3 is a front view of the auxiliary leg;
FIG. 4 is a side view of the auxiliary leg;
FIG. 5 is a schematic view of the working state;
in the figure: the method comprises the following steps of 1-roller mechanism, 2-guide beam, 3-tug mechanism, 4-auxiliary support leg, 5-approach bridge, 31-tug oil cylinder, 32-loop bar, 33-tug beam, 34-tug, 35-driving mechanism, 41-jacking oil cylinder, 42-movable hinged support, 43-auxiliary support leg beam, 44-telescopic upright post and 45-limiting oil cylinder.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
The structure of the telescopic guide beam mechanism with the adjustable angle provided by the embodiment is as shown in fig. 1, and at least comprises a roller mechanism 1, a guide beam 2, a tug mechanism 3, an auxiliary leg 4 and an approach bridge 5, wherein the roller mechanism 1 is positioned at the tail end of the guide beam, the roller mechanism 1 is installed at the front end of a main beam assembly of a mobile trestle and can move on a track in the mobile trestle, the guide beam 2 consists of two longitudinal beams and a plurality of connecting beams between the two longitudinal beams, a wheel set supporting track is arranged below the longitudinal beams, and the wheel set supporting track is positioned above the tug; and anti-skid steel bars are laid on the longitudinal beams to form a traffic lane for construction equipment to pass through. The front end of the guide beam 2 is provided with an approach bridge 5, and the approach bridge 5 realizes the overturn of the approach bridge at different angles through an overturn oil cylinder.
But still be provided with tow boat mechanism 3 in angle regulation's telescopic nose girder mechanism, its structure is shown in figure 2, tow boat mechanism includes tow boat 34 and tow boat roof beam 33 more than a set of, loop bar 32, tow boat hydro-cylinder 31 and actuating mechanism 35, the main girder assembly front end in the telescopic trestle is fixed in the loop bar installation, the tow boat hydro-cylinder is located the loop bar and drives the loop bar flexible, the tow boat roof beam is connected in the bottom of loop bar, the tow boat is installed on the tow boat roof beam and can make through tow boat hydro-cylinder 31 and push up on the wheelset support track on the nose girder bottom surface all the time, actuating mechanism installs on the tow boat roof beam and drives the tow boat operation, the accessible is connected with the tow boat 34 of actuating mechanism 35 and drives the back-and-forth movement of nose girder 2.
The auxiliary supporting leg 4 is located at the front end of the guide beam 2, the structure of the auxiliary supporting leg 4 is shown in fig. 3 and 4, the structure of the auxiliary supporting leg 4 is H-shaped, the auxiliary supporting leg comprises two telescopic vertical columns 44 and an auxiliary supporting leg cross beam 43 fixed between the two telescopic vertical columns 44, the guide beam 2 is located on the auxiliary supporting leg cross beam 43, the guide beam 2 is connected with the auxiliary supporting leg cross beam 43 through a movable hinge seat 42, and the telescopic vertical columns 44 extend up and down to change the angle between the guide beam 2 and the auxiliary supporting leg 4; the telescopic upright column 44 comprises an upper upright column, a lower upright column and a jacking oil cylinder 41, the upper upright column and the lower upright column are of hollow structures and are sleeved with each other, two ends of the jacking oil cylinder 41 are respectively connected with the upper upright column and the lower upright column, and the auxiliary supporting leg cross beam 43 is fixed with the upper upright column. The auxiliary supporting leg cross beam 4 and the guide beam 2 are provided with lug seats on the bottom surfaces thereof, a limiting oil cylinder 45 is arranged between the lug seats and the guide beam, the limiting oil cylinder and the auxiliary supporting leg form a triangular structure together, and the auxiliary supporting leg 4 can be in a vertical state through the limiting oil cylinder in the process of changing the angle between the guide beam and the auxiliary supporting leg.
The utility model provides a but angle regulation's telescopic nose girder mechanism's theory of operation as follows: in the tunnel construction process, when the ground of an inverted arch excavation area is too low and the height of the guide beam 2 needs to be reduced to enable the guide beam 2 to be lowered, firstly, the tug oil cylinder 31 is started to be in a stressed state, then, the jacking oil cylinder 41 is controlled to contract the telescopic upright post 44 to be suspended, then, the front end of the guide beam 2 is reduced in height by extending the tug oil cylinder 31, and then, the telescopic upright post 44 is contacted with the ground by extending the jacking oil cylinder 41, in the project, the auxiliary supporting leg 4 can be ensured to be in a vertical state through the limiting oil cylinder 45, and because the guide beam 2 is connected with the auxiliary supporting leg 4 through the hinged seat 42, the included angle between the guide beam and the auxiliary; after the angle of the guide beam 2 is adjusted, the jacking oil cylinder 41 and the limiting oil cylinder 45 are locked, the tug oil cylinder 31 is in an unstressed state, the guide beam 2 is firmly supported, and the slag car can run back and forth on the guide beam 2. When the ground of an inverted arch excavation area is too high, the height of the guide beam 2 needs to be increased to enable the guide beam 2 to raise the head, the tug oil cylinder 31 is started to be in a stressed state, the height of the front end of the guide beam 2 is increased, and after the angle of the guide beam 2 is adjusted, the jacking oil cylinder 41 and the limiting oil cylinder 45 are locked to be dead, so that the tug oil cylinder 31 is in an unstressed state. When the guide beam 2 needs to be moved, firstly, the guide beam 2 is adjusted to be in a proper state according to the same method, then the limit oil cylinder 45 and the tug oil cylinder 31 are locked, the jacking oil cylinder 41 contracts, the telescopic upright post 44 can be suspended upwards to lift off the ground due to the fact that the guide beam 2 is limited by the tug mechanism 1 and the tug 34 at the tail end, and at the moment, the tug 34 connected with the driving mechanism 35 can drive the guide beam 2 to move back and forth.
Claims (5)
1. An angle-adjustable telescopic guide beam mechanism at least comprises a guide beam, an auxiliary supporting leg and a tug mechanism, wherein the tail end of the guide beam is provided with a roller mechanism, and the roller mechanism can move on a track in a movable trestle; the auxiliary supporting leg is positioned at the front end of the guide beam, and the guide beam is connected with the auxiliary supporting leg beam through the movable hinged support; the tow boat mechanism is installed and is born the weight of the girder front end in the girder assembly to can reciprocate its characterized in that: the auxiliary supporting leg structure is H-shaped and comprises two telescopic vertical columns and an auxiliary supporting leg cross beam fixed between the two telescopic vertical columns, the guide beam is positioned above the auxiliary supporting leg cross beam, and the telescopic vertical columns move up and down to adjust the angle between the guide beam and the auxiliary supporting leg; the tug mechanism comprises more than one group of tug, a tug beam, a loop bar, a tug oil cylinder and a driving mechanism, the loop bar is installed and fixed at the front end of a main beam assembly in the movable trestle, the tug oil cylinder is positioned in the loop bar and drives the loop bar to stretch, the tug beam is connected to the bottom end of the loop bar, the tug is installed on the tug beam and is propped against the bottom surface of the front guide beam, and the driving mechanism is installed on the tug beam and drives the tug to rotate.
2. The adjustable angle telescoping guide beam mechanism of claim 1, wherein: the roller mechanism is provided with rollers and a guide device, and the guide beam is guaranteed to move smoothly between the main beams through the guide device.
3. The adjustable angle telescoping guide beam mechanism of claim 1, wherein: a movable hinged support is arranged between the auxiliary supporting leg cross beam and the guide beam, and a limiting oil cylinder is arranged between the auxiliary supporting leg cross beam and the movable hinged support on the guide beam, so that a triangular structure is formed among the auxiliary supporting leg cross beam, the guide beam and the guide beam together, and when the guide beam needs to swing up and down, the telescopic upright post of the auxiliary supporting leg is ensured to be always in a vertical state through the telescopic effect of the limiting oil cylinder.
4. The adjustable angle telescoping guide beam mechanism of claim 1, wherein: the guide beam consists of two longitudinal beams and a plurality of connecting beams between the two longitudinal beams, and a wheel set supporting rail is arranged below the longitudinal beams and is positioned above the towing wheels; and anti-skid steel bars are laid on the longitudinal beams to form a traffic lane for construction equipment to pass through.
5. The adjustable angle telescoping guide beam mechanism of claim 1, wherein: and the front end of the guide beam is provided with an approach bridge, and the approach bridge turnover mechanism is used for realizing the up-and-down turnover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021047351.5U CN212561104U (en) | 2020-06-09 | 2020-06-09 | Telescopic nose girder mechanism of adjustable angle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021047351.5U CN212561104U (en) | 2020-06-09 | 2020-06-09 | Telescopic nose girder mechanism of adjustable angle |
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| CN212561104U true CN212561104U (en) | 2021-02-19 |
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| CN202021047351.5U Active CN212561104U (en) | 2020-06-09 | 2020-06-09 | Telescopic nose girder mechanism of adjustable angle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517450A (en) * | 2022-03-10 | 2022-05-20 | 中铁十局集团青岛工程有限公司 | Bendable guide beam |
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- 2020-06-09 CN CN202021047351.5U patent/CN212561104U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517450A (en) * | 2022-03-10 | 2022-05-20 | 中铁十局集团青岛工程有限公司 | Bendable guide beam |
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