CN219671112U - A tackle on arch for installation of steel pipe arch bridge jib - Google Patents
A tackle on arch for installation of steel pipe arch bridge jib Download PDFInfo
- Publication number
- CN219671112U CN219671112U CN202321320087.1U CN202321320087U CN219671112U CN 219671112 U CN219671112 U CN 219671112U CN 202321320087 U CN202321320087 U CN 202321320087U CN 219671112 U CN219671112 U CN 219671112U
- Authority
- CN
- China
- Prior art keywords
- arch
- bridge
- welded
- chords
- lower longitudinal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to an arch upper pulley for installing a steel pipe arch bridge suspender, which comprises two lower longitudinal beams arranged along the bridge direction, wherein two idler wheels are arranged at the bottom of each lower longitudinal beam, the idler wheels at the bottoms of the two lower longitudinal beams are respectively supported on two upper chords of an arch rib, the wheel surface of each idler wheel is annularly provided with an arc-shaped groove, the inner arc surface of the arc-shaped groove is completely attached to the top surface of the upper chords of the arch rib, two cushion blocks are welded on the top surface of each lower longitudinal beam, an upper longitudinal beam is welded on the two cushion blocks along the bridge direction, at least two cross beams are welded on the upper cross beams of the two upper longitudinal beams, and a hoisting winch is fixedly installed on each cross beam. The utility model can pull the winch arranged at two ends of the bridge to slide on the arch rib, and the lifting rod is lifted by the lifting winch on the pulley, so that one person can finish the lifting rod installation operation on the arch rib, and the installation speed is high.
Description
Technical Field
The utility model belongs to the technical field of bridge construction, relates to the installation of a suspender between a main girder and an arch rib of a steel tube arch bridge, and particularly relates to an on-arch pulley for the installation of the suspender of the steel tube arch bridge.
Background
The main beams and the arch ribs of the middle-bearing type steel pipe arch bridge are connected by the hanging rods, and the load of the main beams is transferred to the arch ribs through the hanging rods.
When the arch bridge is constructed, the method of constructing the arch bridge by adopting the method of firstly beam and then arch or the method of firstly arch and then beam is generally adopted according to different construction environments. When the girder-first arch method is adopted for construction, bridge piers are generally arranged below the girder, after the arch rib is installed, a crane can be adopted for installing a suspender on the bridge, and the suspender is relatively easy to install; the bridge pier is not generally arranged below the main beam in the process of arch-first and then Liang Fashi man hours, the main beam is installed in sections, and after one main beam section is installed in place, the main beam section is connected with the arch rib through the hanging rod, so that the hanging rod is installed on the arch rib before the main beam is installed, but under the condition, the hanging rod is difficult to install, the hanging rod is required to be hoisted by adopting hoisting equipment such as a chain block on the arch rib, during normal construction, a component for fixing the hoisting equipment is welded at the installation position of each hanging rod on the arch rib, after the hoisting of one hanging rod is completed, constructors carry the hoisting equipment to move to the next position, and a plurality of persons are required to be matched on the arch rib. Because of the narrow space on the arch, a plurality of people construct on the arch rib at the same time, and certain potential safety hazards exist; after the construction is completed, the fixed components of the lifting equipment on the arch rib are required to be cut off one by one, and the arch rib can be damaged by welding and cutting, so that the construction process is complex and the efficiency is low.
Disclosure of Invention
The utility model aims to solve the problems and provide an overhead traveling crane for installing a steel pipe arch bridge suspender, which is convenient for safely and efficiently installing the suspender.
The technical scheme of the utility model is as follows:
the utility model provides a pulley on hunch for installation of steel pipe arch bridge jib, steel pipe arch bridge's arch rib includes two upper chords and two lower chords, has welded the parallel connection respectively between two upper chords and between two lower chords, has welded web member, its characterized in that between upper chords and the lower chords: the upper arch pulley comprises two lower longitudinal beams arranged along the bridge direction, two rollers are arranged at the bottom of each lower longitudinal beam, the rollers at the bottoms of the two lower longitudinal beams are respectively supported on two upper chords of the arch rib, the wheel surface of each roller is annularly provided with an arc-shaped groove, and the inner cambered surface of the arc-shaped groove is completely attached to the top surface of the upper chord of the arch rib; two cushion blocks are welded on the top surface of each lower longitudinal beam, an upper longitudinal beam is welded on the two cushion blocks on each lower longitudinal beam along the bridge direction, at least two cross beams are welded on the upper transverse bridge directions of the two upper longitudinal beams, and a lifting winch is fixedly installed on each cross beam.
The utility model can pull the hoisting rod on the arch rib through the hoisting machines arranged at the two ends of the bridge, and hoist the hoisting rod through the hoisting machines on the pulley, so that one person can finish the hoisting rod installation operation on the arch rib, the number of workers on the arch is small, the construction speed is high, and the work efficiency is high; the pulley slides on the arch rib through the pulley, and the arch rib structure is not damaged.
Drawings
FIG. 1 is a schematic view of a transverse bridge elevational structure of the present utility model;
fig. 2 is a schematic view of a forward bridge elevation structure of the present utility model.
Detailed Description
As shown in fig. 1 and 2, the overhead travelling crane of the present utility model is mounted on an arch rib of a steel tube arch bridge, and the arch rib 100 of the steel tube arch bridge includes two upper chords and two lower chords, a parallel connection is welded between the two upper chords and between the two lower chords, and a web member is welded between the upper chords and the lower chords. The upper arch pulley comprises two lower longitudinal beams 1 which are arranged along the bridge direction, two rollers 2 are arranged at the bottom of each lower longitudinal beam 1, the rollers 2 at the bottoms of the two lower longitudinal beams are respectively supported on two upper chords of the arch rib 1, the wheel surface of each roller 2 is annularly provided with an arc-shaped groove, the arc diameter of the arc-shaped groove is equal to the outer diameter of the upper chord of the arch rib, and the arc surfaces of the arc-shaped grooves of the rollers are completely attached to the top surface of the upper chord of the arch rib; two cushion blocks 3 are welded on the top surface of each lower longitudinal beam 1, an upper longitudinal beam 4 is welded on the two cushion blocks 3 on each lower longitudinal beam along the bridge direction, at least two cross beams 5 are welded on the upper transverse beams 4 along the bridge direction, and a hoisting winch 6 is fixedly installed on each cross beam 5.
In the concrete implementation of the utility model, at least two connecting rods 7 can be fixedly arranged between the two side sills 1 in order to ensure the stable structure of the pulley.
In the implementation of the utility model, in order to ensure the stable structure of the cross beams, an inclined strut 8 can be welded between the two ends of each cross beam 5 and the two side sills 1 respectively.
When the hoisting device is used for hoisting a boom, two traction winches are respectively arranged at two ends of a bridge, a pulley is firstly placed on an arch rib, the traction winches at two ends of the bridge are respectively connected with two lower longitudinal beams 1 or two upper longitudinal beams 4 of the pulley through traction ropes 9, one end of the traction winches is then used for rope winding, and the other end of the traction winches is used for rope unwinding, so that the traction pulley can slide on the arch rib; when the crane slides to a hanger rod installation position, the movement of the crane is stopped, the lower end of a steel wire rope 10 of a lifting winch 6 on the crane passes through a hanger rod installation reserved hole on an arch rib, the lifting winch is started to lower the steel wire rope, the lower end of the bridge is connected with the upper end of a hanger rod to be installed, the lifting winch is started again to lift the hanger rod, the upper end of the hanger rod passes through the hanger rod installation reserved hole on the arch, a hanger rod upper end nut is installed, and then the connection between the steel wire rope and the hanger rod is released, so that the installation of one hanger rod is completed. The traction winch then tows the upper-arch pulley to move to the next boom installation position.
Claims (3)
1. The utility model provides a pulley on hunch for installation of steel pipe arch bridge jib, steel pipe arch bridge's arch rib includes two upper chords and two lower chords, has welded the parallel connection respectively between two upper chords and between two lower chords, has welded web member, its characterized in that between upper chords and the lower chords: the upper arch pulley comprises two lower longitudinal beams arranged along the bridge direction, two rollers are arranged at the bottom of each lower longitudinal beam, the rollers at the bottoms of the two lower longitudinal beams are respectively supported on two upper chords of the arch rib, the wheel surface of each roller is annularly provided with an arc-shaped groove, and the inner cambered surface of the arc-shaped groove is completely attached to the top surface of the upper chord of the arch rib; two cushion blocks are welded on the top surface of each lower longitudinal beam, an upper longitudinal beam is welded on the two cushion blocks on each lower longitudinal beam along the bridge direction, at least two cross beams are welded on the upper transverse bridge directions of the two upper longitudinal beams, and a lifting winch is fixedly installed on each cross beam.
2. An overhead trolley for use in steel tube arch bridge boom installation as claimed in claim 1, wherein: at least two connecting rods are fixedly arranged between the two lower longitudinal beams.
3. An overhead trolley for use in steel tube arch bridge boom installation as claimed in claim 1, wherein: and an inclined stay bar is welded between the two ends of each cross beam and the two lower longitudinal beams respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321320087.1U CN219671112U (en) | 2023-05-28 | 2023-05-28 | A tackle on arch for installation of steel pipe arch bridge jib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321320087.1U CN219671112U (en) | 2023-05-28 | 2023-05-28 | A tackle on arch for installation of steel pipe arch bridge jib |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219671112U true CN219671112U (en) | 2023-09-12 |
Family
ID=87893257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321320087.1U Active CN219671112U (en) | 2023-05-28 | 2023-05-28 | A tackle on arch for installation of steel pipe arch bridge jib |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219671112U (en) |
-
2023
- 2023-05-28 CN CN202321320087.1U patent/CN219671112U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |