CN113322840A - Construction method and equipment for bridge dismantling - Google Patents
Construction method and equipment for bridge dismantling Download PDFInfo
- Publication number
- CN113322840A CN113322840A CN202110758962.3A CN202110758962A CN113322840A CN 113322840 A CN113322840 A CN 113322840A CN 202110758962 A CN202110758962 A CN 202110758962A CN 113322840 A CN113322840 A CN 113322840A
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- Prior art keywords
- swing
- swing rod
- rod
- rotation stopping
- guide
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/02—Particular applications of blasting techniques for demolition of tall structures, e.g. chimney stacks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of building demolition, in particular to a construction method and equipment for bridge demolition. The construction equipment for bridge dismantling comprises a sliding column and a swing rod assembly, wherein the sliding column extends along the front-back direction; the swing rod assemblies are multiple, each swing assembly comprises a rotation stopping sleeve, a swing rod, a guide rod and two telescopic blocks, and the rotation stopping sleeves are slidably arranged on the sliding columns; the upper end of the swing rod is rotatably arranged on the rotation stopping sleeve, the front side and the rear side of the upper end part under the rotation center are respectively provided with a top post, the upper end of the guide rod is rotatably arranged at the lower end of the swing rod, and the guide rod is provided with a guide hole; the two telescopic blocks are symmetrically arranged on the front side and the rear side of the swing rod; the elastic support extends out under the action of a pressure spring and retracts under the extrusion of the ejection column; the centers of the telescopic blocks are all located on the left side right below the rotation stopping sleeve, the swing rod on the leftmost side is determined to be the swing rod closest to the vertical state in the positions where the swing rods are static after swinging, and then the guide rod is rotated by taking the swing rod as the reference to drill holes along the guide hole.
Description
Technical Field
The invention relates to the field of building demolition, in particular to construction equipment for bridge demolition.
Background
The bridge construction is based on reinforced concrete, can adopt the blasting to demolish when demolishing the bridge, will realize the accurate blasting when the blasting is demolishd, drill hole and bury the cartridge bag at the bearing position of bridge, because the direction and the scope of blasting destruction and throwing need be considered when designing cartridge bag position, need the direction and the degree of depth of strict control hole when drilling, consequently need the construction equipment that the bridge beam of tearing open of an ability auxiliary drilling used, guarantee the accurate of cartridge bag and place.
Disclosure of Invention
The invention provides a construction method and equipment for detaching a bridge, which aim to solve the problem of accurate placement of a medicine bag.
The invention relates to a construction method and equipment for dismantling a bridge, which adopts the following technical scheme:
a construction device for detaching a bridge girder comprises a supporting and hanging module, a sliding column and a swing rod assembly, wherein the supporting and hanging module is slidably arranged on an external construction track; the sliding column is arranged below the supporting and hanging module and extends along the front-back direction; the swing rod assemblies are distributed at intervals in sequence from back to front along the length direction of the sliding column, each swing assembly comprises a rotation stopping sleeve, a swing rod, a guide rod and two telescopic blocks, the rotation stopping sleeve is slidably mounted on the sliding column, and the sliding column is provided with a spline for limiting the rotation stopping sleeve to rotate; the upper end of the swing rod is rotatably arranged on the rotation stopping sleeve so that the swing rod can swing left and right around the rotation stopping sleeve, the front side and the rear side of the upper end part of the swing rod are respectively provided with a top post extending in the front-rear direction under the rotation center, the upper end of the guide rod is rotatably arranged at the lower end of the swing rod around a rotating shaft extending in the front-rear direction, and the guide rod extends to the lower end of the guide rod from the upper end of the guide rod along the extending direction of the swing rod in an initial state; the lower end of the guide rod is provided with a calibration lamp, the central axis of the calibration lamp is coaxial with or positioned on the left side of the central line of the guide rod, and the guide rod is provided with a guide hole; the two telescopic blocks are both arranged on the rotation stopping sleeve and symmetrically arranged on the front side and the rear side of the oscillating bar; a pressure spring is arranged between the telescopic block and the rotation stopping sleeve, and the telescopic block extends out under the action of the pressure spring and retracts under the extrusion of the ejection column; the centers of the telescopic blocks are all positioned on the left side right below the rotation stopping sleeve, so that the rest positions of the swing rods after swinging around the rotation stopping sleeve are deviated to the right, and then the rest position of the lower end of the swing rod on the leftmost side is determined from the rest positions of the swing rods of the plurality of swinging assemblies after swinging in different directions from different heights, namely the position of the swing rod closest to the vertical state; the drilling column can be driven into the ground downwards along the guide hole at the lower end of the swing rod at the position.
Optionally, the extending end of the telescopic block is in a cone shape with a convex center, when the swing rod swings leftwards, the ejection column extrudes the telescopic block to shrink along the right side face of the cone shape, and when the swing rod swings rightwards, the ejection column extrudes the telescopic block to shrink along the left side face of the cone shape; the left side surface of the extending end of the telescopic block is positioned on the left side of the initial staying range, and the right side surface of the extending end of the telescopic block completely covers the initial staying range, wherein the initial staying range is the angle range within which the swing rod stays after freely swinging and standing without being hindered by the telescopic block.
Optionally, the swing rod assembly further comprises an adjusting ring, the adjusting ring is fixed at the upper end of the guide rod, is coaxial with the rotating shaft between the swing rod and the guide rod, and synchronously rotates along with the guide rod; be provided with on the adjustable ring along adjustable ring circumference evenly distributed's mounting hole, and every mounting hole department all is provided with different scales to record the guide bar for pendulum rod pivoted angle, and after the guide bar rotated to suitable angle, fixed guide bar and pendulum rod through the mounting hole.
Optionally, a triggering curved bar is arranged on the front side or the rear side of each swing rod, the triggering curved bar extends from the left end to the right end of the triggering curved bar along an arc direction coaxial with the swing curve of the swing rod, a plurality of through holes are formed in the triggering curved bar, and the through holes are sequentially distributed at intervals along the length direction of the triggering curved bar.
Optionally, the supporting and hanging module comprises two parallel cross rods and two parallel connecting rods, the two cross rods are slidably mounted on the external construction track, and the two connecting rods are respectively connected with the front ends and the rear ends of the two cross rods and fixedly connected with the cross rods; the sliding column is arranged between the two cross rods, and two ends of the sliding column are respectively connected with the two connecting rods.
Optionally, each rotation stopping sleeve is provided with a first jackscrew, and the first jackscrew tightly pushes against the sliding column when the swing assembly moves to a proper position, so as to limit the rotation stopping sleeve to slide back and forth on the sliding column.
Optionally, each rotation stopping sleeve is provided with a second jackscrew, and the second jackscrew tightly pushes the swing rod after determining the swing rod closest to the vertical so as to limit the swing of the swing rod around the rotation stopping sleeve.
A construction method for dismantling a bridge, comprising:
(1) sequentially sliding the swing assembly to a position to be punched from back to front along the length direction of the sliding column;
(2) lifting the lower ends of the swing rods leftwards or rightwards to enable the lower ends of the swing rods 1 to be located at different heights and different directions, and recording the initial position of each swing rod;
(3) loosening the swing rods to enable the swing rods to swing freely;
(4) when the swing rods stop swinging, determining the light spot positioned at the leftmost side according to the light spots irradiated on the ground by the calibration lamps below each swing rod, and further determining the swing rod positioned at the leftmost side, namely the swing rod closest to the vertical position;
(5) fixing the upper end of the swing rod closest to the vertical position with a corresponding rotation stopping sleeve, rotating a guide rod at the lower end of the swing rod closest to the vertical position to a preset angle, fixing the guide rod and the swing rod, and driving a drilling column into the guide hole on the guide rod;
(6) loosening the fixed connection between the guide rod and the swing rod to enable the guide rod and the swing rod to return to the collinear position, and then respectively sliding the swing assembly at the position and the swing assembly positioned at the front side of the swing assembly at the position forwards to the corresponding positions to be punched;
(7) repeatedly lifting the lower end of the swing rod, swinging the swing rod of the first swing rod assembly on the sliding column from back to front to the initial position of the swing rod of the closest vertical position of the last wheel, and randomly swinging the initial positions of other swing rods, and repeating the steps,
the next borehole location is determined.
The invention has the beneficial effects that: the construction equipment for bridge dismantling determines the swing rod closest to the vertical from the swing of the swing rods, further determines the rotation angle of the guide rod by taking the swing rod as a reference, and drills holes along the guide hole on the guide rod, so that the placement position of the medicine bag is more accurate.
Furthermore, by arranging the eccentrically-mounted telescopic block, the static range of the swinging swing rods deviates to one side, and the leftmost swing rod is determined to be the closest vertical swing rod, so that the closest vertical swing rod is determined conveniently.
Furthermore, after a swing rod closest to the vertical direction is determined, a hole is drilled under the guidance of a guide hole of the swing rod, the swing assembly is moved to the next punching position, the next punching position is determined, and the punching position can be determined by the swing assembly in each swing, so that the working efficiency is improved.
Furthermore, the swing rod of the first swing assembly in the back-to-front direction on the sliding column is swung to the initial position of the swing rod of the closest vertical position of the last wheel, so that the swing rod of the first swing assembly in the back-to-front direction on the sliding column can be more easily close to the vertical position in the next swing, after drilling at the position is completed, all the swing rod assemblies synchronously move forwards, and the situation that the plurality of swing rod assemblies are too dispersed to be beneficial to data acquisition is avoided.
Further, after the swing rod closest to the vertical position is determined in each swing, the initial position of the swing rod is used for the next swing, and the swing rod closest to the vertical position is determined again in the next swing, so that the swing rod determined in each swing is closer to the vertical position.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of an overall structure of an embodiment of a construction apparatus for bridge demolition according to the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1;
FIG. 3 is a side view of the overall structure of an embodiment of the construction equipment for bridge girder erection according to the present invention;
FIG. 4 is a schematic view showing a rotation state of a guide bar in an embodiment of the construction equipment for bridge demolition according to the present invention;
FIG. 5 is a schematic view illustrating installation of a rotation stopping sleeve, a telescopic block and a swing rod in an embodiment of the construction equipment for bridge demolition according to the present invention;
FIG. 6 is a schematic view showing the connection of an adjusting ring and a guide bar in the embodiment of the construction equipment for bridge girder erection according to the present invention;
FIG. 7 is a schematic view illustrating positions of a rotation stopping sleeve and a telescopic block in an embodiment of the construction equipment for bridge dismantling according to the present invention;
FIG. 8 is a sectional view showing the installation of a rotation stopping sleeve and a telescopic block in the embodiment of the construction equipment for bridge girder erection according to the present invention;
in the figure: 11. a cross bar; 12. a connecting rod; 13. a third jackscrew; 14. a traveler; 20. a swing rod component; 21. a swing rod; 211. a top pillar; 22. a guide bar; 23. an adjusting ring; 24. a guide hole; 25. a rotation stopping sleeve; 251. a telescopic block; 26. a first jackscrew; 27. a second jackscrew; 28. triggering the bent rod; 29. the lamp is calibrated.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the construction equipment for dismantling a bridge according to the present invention, as shown in fig. 1 to 8, includes a supporting and hanging module, a sliding column 14, a swing link assembly 20,
the supporting and hanging module is slidably arranged on an external construction track;
the sliding column 14 is installed below the supporting and hanging module and extends along the front-back direction;
a plurality of swing link assemblies 20 are arranged along the length direction of the sliding column 14 at intervals in sequence from back to front, each swing link assembly comprises a rotation stopping sleeve 25, a swing link 21, a guide rod 22 and two telescopic blocks 251,
the rotation stopping sleeve 25 can be slidably arranged on the sliding column 14, and the sliding column 14 is provided with a spline for limiting the rotation of the rotation stopping sleeve 25;
the upper end of the swing rod 21 is rotatably arranged on the rotation stopping sleeve 25, so that the swing rod 21 can swing left and right around the rotation stopping sleeve 25, the front side and the rear side under the rotation center of the upper end part of the swing rod 21 are respectively provided with a top post 211 extending in the front-rear direction, the upper end of the guide rod 22 is rotatably arranged at the lower end of the swing rod 21 around a rotating shaft extending in the front-rear direction, and the guide rod 22 extends to the lower end of the guide rod 22 from the upper end of the guide rod 22 along the extending direction of the swing rod 21 in an initial state; a calibration lamp 29 is arranged at the lower end of the guide rod 22, the central axis of the calibration lamp 29 is collinear with the central line of the guide rod 22 or is positioned on the left side of the central line of the guide rod 22, and a guide hole 24 is formed in the guide rod 22;
the two telescopic blocks 251 are detachably arranged on the rotation stopping sleeve 25 and symmetrically arranged at the front side and the rear side of the swing rod 21; a pressure spring is arranged between the telescopic block 251 and the rotation stopping sleeve 25, and the telescopic block 251 extends out under the action of the pressure spring and retracts under the extrusion of the ejection column 211; the centers of the telescopic blocks 251 are all positioned on the left side right below the rotation stopping sleeve 25, so that the rest positions of the swing rods 21 after swinging around the rotation stopping sleeve 25 are deviated to the right, and then the lower end rest position of the swing rod 21 on the leftmost side is determined from the rest positions of the swing rods 21 of the plurality of swinging assemblies after swinging from different heights and different directions, namely the position of the swing rod 21 closest to the vertical state; the drilling column can be driven downwards into the ground along the guide hole 24 at the lower end of the swing rod 21 at the position.
In the present embodiment, as shown in fig. 1 and 3, a triggering curved rod 28 is disposed at a front side or a rear side of each swing link 21, the triggering curved rod 28 extends from a left end to a right end of the triggering curved rod 28 along an arc direction coaxial with a swing curve of the swing link 21, a plurality of through holes are disposed on the triggering curved rod 28, and the through holes are sequentially distributed at intervals along a length direction of the triggering curved rod 28. When the device is used, a long rod is taken to sequentially penetrate through the through holes in different positions on the trigger bent rods 28 on the swing rods 21, so that the swing rods 21 are located at initial positions with different heights and different directions, and then the long rod is drawn out, so that the swing rods 21 freely swing from the initial positions with different heights and different directions.
In this embodiment, as shown in fig. 5 and 7, the extending end of the telescopic block 251 is in a cone shape with a convex center, when the swing link 21 swings left, the top pillar 211 presses the telescopic block 251 to shrink along the right side surface of the cone, and when the swing link 21 swings right, the top pillar 211 presses the telescopic block 251 to shrink along the left side surface of the cone; as shown in fig. 3, (b, b') is an initial staying range, that is, an angle range where the swing link 21 stays after freely swinging and standing without being hindered by the telescopic block 251, a more fuzzy range can be obtained by multiple swinging experiments, and the initial staying range covers the range obtained by the experiments; the left side surface of the extending end of the telescopic block 251 is located at the left side of the initial staying range to ensure that the swing link 21 can always cross the boundary line between the left side surface and the right side surface when swinging to the right, and the right side surface of the extending end of the telescopic block 251 completely covers the initial staying range to provide the leftward swinging resistance of the swing link 21, so that the staying range of the swing link 21 is shifted to the right to the position (a, a').
In the present embodiment, as shown in fig. 4, the swing link assembly 20 further includes an adjusting ring 23, the adjusting ring 23 is fixed on the upper end of the guide rod 22, is coaxial with the rotating shaft between the swing link 21 and the guide rod 22, and rotates synchronously with the guide rod 22; the adjusting ring 23 is provided with mounting holes which are uniformly distributed along the circumferential direction of the adjusting ring 23, and each mounting hole is provided with different scales so as to record the rotating angle of the guide rod 22 relative to the swing rod 21, and after the guide rod 22 rotates to a proper angle, the guide rod 22 and the swing rod 21 are fixed through the mounting holes.
In the present embodiment, as shown in fig. 2 and 5, each rotation-stopping sleeve 25 is provided with a first top thread 26, and the first top thread 26 tightly abuts against the sliding column 14 when the swing assembly moves to a proper position, so as to limit the forward and backward sliding of the rotation-stopping sleeve 25 on the sliding column 14.
In the present embodiment, as shown in fig. 2 and 5, each rotation stopping sleeve 25 is provided with a second top thread 27, and the second top thread 27 tightly pushes the swing link 21 after determining the swing link 21 closest to the vertical so as to limit the swing of the swing link 21 around the rotation stopping sleeve 25.
In this embodiment, as shown in fig. 1, the supporting and hanging module includes two parallel cross bars 11 and two parallel connecting rods 12, the two cross bars 11 are slidably mounted on the external construction track, and the two connecting rods 12 are respectively connected with the front ends and the rear ends of the two cross bars 11 and fixedly connected with the cross bars 11 through third jackscrews 13; the sliding column 14 is disposed between the two cross bars 11, and two ends of the sliding column are respectively connected to the two connecting rods 12.
The embodiment of the construction method of the construction equipment for bridge dismantling comprises the following steps:
(1) the swinging component slides to the position to be punched from back to front in sequence along the length direction of the sliding column 14;
(2) lifting the lower ends of the swing rods 21 leftwards or rightwards to enable the lower ends of the swing rods 21 to be located at different heights and different directions, and recording the initial position of each swing rod 21;
(3) loosening the swing rods 21 to enable the swing rods 21 to swing freely;
(4) when the swing rods 21 stop swinging, determining the light spot positioned at the leftmost side according to the light spots irradiated on the ground by the calibration lamps 29 below each swing rod 21, and further determining the swing rod 21 positioned at the leftmost side, namely the swing rod 21 closest to the vertical position;
(5) fixing the upper end of the swing rod 21 closest to the vertical position with a corresponding rotation stopping sleeve 25, rotating the guide rod 22 at the lower end of the swing rod 21 closest to the vertical position to a preset angle, fixing the guide rod 22 and the swing rod 21, and driving a drill column along a guide hole 24 on the guide rod 22;
(6) loosening the fixed connection between the guide rod 22 and the swing rod 21, enabling the guide rod 22 and the swing rod 21 to restore to the collinear position, and then respectively sliding the swing assembly at the position and the swing assembly positioned at the front side of the swing assembly at the position forwards to the position to be punched respectively corresponding to the next position to be punched;
(7) and repeatedly lifting the lower end of the swing rod 21, swinging the swing rod 21 of the first swing rod assembly 20 on the sliding column 14 from back to front to the initial position of the swing rod 21 of the last wheel closest to the vertical position, and randomly swinging the initial positions of other swing rods 21, and repeating the steps to determine the next drilling position.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a construction equipment for bridge disassembly which characterized in that: the device comprises a supporting and hanging module, a sliding column and a swing rod assembly, wherein the supporting and hanging module is slidably arranged on an external construction track; the sliding column is arranged below the supporting and hanging module and extends along the front-back direction; the swing rod assemblies are distributed at intervals in sequence from back to front along the length direction of the sliding column, each swing assembly comprises a rotation stopping sleeve, a swing rod, a guide rod and two telescopic blocks, the rotation stopping sleeve is slidably mounted on the sliding column, and the sliding column is provided with a spline for limiting the rotation stopping sleeve to rotate; the upper end of the swing rod is rotatably arranged on the rotation stopping sleeve so that the swing rod can swing left and right around the rotation stopping sleeve, the front side and the rear side of the upper end part of the swing rod are respectively provided with a top post extending in the front-rear direction under the rotation center, the upper end of the guide rod is rotatably arranged at the lower end of the swing rod around a rotating shaft extending in the front-rear direction, and the guide rod extends to the lower end of the guide rod from the upper end of the guide rod along the extending direction of the swing rod in an initial state; the lower end of the guide rod is provided with a calibration lamp, the central axis of the calibration lamp is coaxial with or positioned on the left side of the central line of the guide rod, and the guide rod is provided with a guide hole; the two telescopic blocks are both arranged on the rotation stopping sleeve and symmetrically arranged on the front side and the rear side of the oscillating bar; a pressure spring is arranged between the telescopic block and the rotation stopping sleeve, and the telescopic block extends out under the action of the pressure spring and retracts under the extrusion of the ejection column; the centers of the telescopic blocks are all positioned on the left side right below the rotation stopping sleeve, so that the rest positions of the swing rods after swinging around the rotation stopping sleeve are deviated to the right, and then the rest position of the lower end of the swing rod on the leftmost side is determined from the rest positions of the swing rods of the plurality of swinging assemblies after swinging in different directions from different heights, namely the position of the swing rod closest to the vertical state; the drilling column can be driven into the ground downwards along the guide hole at the lower end of the swing rod at the position.
2. The construction equipment for dismantling a bridge as set forth in claim 1, wherein: the extension end of the telescopic block is in a cone shape with a convex center, when the swing rod swings leftwards, the ejection column extrudes the telescopic block to shrink along the right side face of the cone, and when the swing rod swings rightwards, the ejection column extrudes the telescopic block to shrink along the left side face of the cone; the left side surface of the extending end of the telescopic block is positioned on the left side of the initial staying range, and the right side surface of the extending end of the telescopic block completely covers the initial staying range, wherein the initial staying range is the angle range within which the swing rod stays after freely swinging and standing without being hindered by the telescopic block.
3. The construction equipment for dismantling a bridge as set forth in claim 2, wherein: the swing rod assembly also comprises an adjusting ring which is fixed at the upper end of the guide rod, is coaxial with a rotating shaft between the swing rod and the guide rod and synchronously rotates along with the guide rod; be provided with on the adjustable ring along adjustable ring circumference evenly distributed's mounting hole, and every mounting hole department all is provided with different scales to record the guide bar for pendulum rod pivoted angle, and after the guide bar rotated to suitable angle, fixed guide bar and pendulum rod through the mounting hole.
4. The construction equipment for dismantling a bridge as set forth in claim 2, wherein: the front side or the rear side of each oscillating bar is provided with a triggering curved bar, the triggering curved bar extends to the right end of the oscillating bar from the left end of the triggering curved bar along the arc direction coaxial with the oscillating curve of the oscillating bar, a plurality of through holes are arranged on the triggering curved bar, and the through holes are sequentially distributed at intervals along the length direction of the triggering curved bar.
5. The construction equipment for dismantling a bridge as set forth in claim 2, wherein: the supporting and hanging module comprises two parallel cross rods and two parallel connecting rods, the two cross rods are slidably arranged on an external construction track, and the two connecting rods are respectively connected with the front ends and the rear ends of the two cross rods and fixedly connected with the cross rods; the sliding column is arranged between the two cross rods, and two ends of the sliding column are respectively connected with the two connecting rods.
6. The construction equipment for dismantling a bridge as set forth in claim 2, wherein: each rotation stopping sleeve is provided with a first jackscrew which tightly props the sliding column when the swing assembly moves to a proper position so as to limit the rotation stopping sleeve to slide back and forth on the sliding column.
7. The construction equipment for dismantling a bridge as set forth in claim 6, wherein: and each rotation stopping sleeve is provided with a second jackscrew which tightly pushes the swing rod after the swing rod closest to the vertical is determined so as to limit the swing of the swing rod around the rotation stopping sleeve.
8. A construction method for bridge girder erection according to any one of claims 2 to 7, comprising:
(1) sequentially sliding the swing assembly to a position to be punched from back to front along the length direction of the sliding column;
(2) lifting the lower ends of the swing rods leftwards or rightwards to enable the lower ends of the swing rods 1 to be located at different heights and different directions, and recording the initial position of each swing rod;
(3) loosening the swing rods to enable the swing rods to swing freely;
(4) when the swing rods stop swinging, determining the light spot positioned at the leftmost side according to the light spots irradiated on the ground by the calibration lamps below each swing rod, and further determining the swing rod positioned at the leftmost side, namely the swing rod closest to the vertical position;
(5) fixing the upper end of the swing rod closest to the vertical position with a corresponding rotation stopping sleeve, rotating a guide rod at the lower end of the swing rod closest to the vertical position to a preset angle, fixing the guide rod and the swing rod, and driving a drilling column into the guide hole on the guide rod;
(6) loosening the fixed connection between the guide rod and the swing rod to enable the guide rod and the swing rod to return to the collinear position, and then respectively sliding the swing assembly at the position and the swing assembly positioned at the front side of the swing assembly at the position forwards to the corresponding positions to be punched;
(7) and repeatedly lifting the lower end of the swing rod, swinging the swing rod of the first swing rod assembly on the sliding column from back to front to the initial position of the swing rod of the last wheel closest to the vertical position, and randomly swinging the initial positions of other swing rods, and repeating the steps to determine the next drilling position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110758962.3A CN113322840A (en) | 2021-07-05 | 2021-07-05 | Construction method and equipment for bridge dismantling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110758962.3A CN113322840A (en) | 2021-07-05 | 2021-07-05 | Construction method and equipment for bridge dismantling |
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| CN113322840A true CN113322840A (en) | 2021-08-31 |
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| CN202110758962.3A Pending CN113322840A (en) | 2021-07-05 | 2021-07-05 | Construction method and equipment for bridge dismantling |
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| CN204555854U (en) * | 2015-03-30 | 2015-08-12 | 深圳市金奥博科技有限公司 | Underground charging vehicle looks for holes mechanism automatically |
| CN105220689A (en) * | 2015-10-28 | 2016-01-06 | 安徽恒坤地基基础工程有限公司 | A kind of photovoltaic pile driver |
| CN108458634A (en) * | 2017-04-24 | 2018-08-28 | 中交公局厦门工程有限公司 | A kind of equidistant fan transfer blasting construction method in the areas tunnel Tao Kuocao |
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