CN212612037U - A self-lifting arch rib vertical rotation lifting frame installation system - Google Patents
A self-lifting arch rib vertical rotation lifting frame installation system Download PDFInfo
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- CN212612037U CN212612037U CN202021207411.5U CN202021207411U CN212612037U CN 212612037 U CN212612037 U CN 212612037U CN 202021207411 U CN202021207411 U CN 202021207411U CN 212612037 U CN212612037 U CN 212612037U
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- jacking
- vertical
- frame
- arch rib
- truss
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- 238000009434 installation Methods 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
本实用新型提供一种自顶升式拱肋竖转提升架安装系统，包括两个顶升套架，每个顶升套架包括4根竖杆，4根竖杆上端分别与一拱肋竖转提升架的顶层节段底部4个角焊接，两个顶层节段顶部固定搭设一桁架，桁架上安装有天车；沿桁架两侧，在每个顶升套架的两根竖杆间设有两个竖向的顶升油缸，两顶升油缸的下端通过销轴连接一支撑梁；两顶升套架相对侧的每个竖杆上设置一可折叠式三角托架。进行拱肋竖转提升架安装时，将顶升套架套设在两个已安装完成的标准节段上，通过顶升油缸将顶层节段每次顶升大于一个标准节段高度，然后用天车提吊标准节段进行安装，不用大型吊机，且施工安全性高。
The utility model provides a self-lifting arch rib vertical rotation lifting frame installation system, which includes two jacking sleeve frames, each jacking sleeve frame includes four vertical rods, and the upper ends of the four vertical rods are respectively vertical to an arch rib The bottom of the top-level segment of the turn-lifting frame is welded with four corners, a truss is fixed on the top of the two top-level segments, and a crane is installed on the truss; along both sides of the truss, between the two vertical rods of each jacking frame There are two vertical jacking oil cylinders, the lower ends of the two jacking oil cylinders are connected to a support beam through a pin shaft; a foldable triangular bracket is arranged on each vertical rod on the opposite side of the two jacking sleeve frames. When installing the vertical swivel lifting frame of the arch rib, set the jacking sleeve frame on the two standard segments that have been installed, and use the jacking cylinder to lift the top segment by more than one standard segment height each time. The crane lifts and hoists the standard sections for installation without large cranes, and the construction safety is high.
Description
Technical Field
The utility model belongs to the technical field of the steel arch bridge construction, a mounting system that arched bridge arch rib erects commentaries on classics hoisting frame is related to.
Background
After the arch ribs of the steel arch bridge are assembled by adopting a low-position horizontal splicing method, the arch ribs need to be vertically rotated to the designed installation angle and position. The arch rib vertical rotation construction needs to be carried out through a vertical rotation lifting frame. As shown in fig. 1, the arch rib vertical rotation lifting frame comprises towers 1 positioned at two sides of an arch rib, the main body of each tower 1 is formed by connecting a plurality of standard segments up and down, a top segment 2 is arranged at the top of each tower 1, a truss 3 is arranged between the top segments of the two towers, and an operating platform 4 and a hydraulic lifting system 5 are arranged on the truss 3.
When the arch rib vertical rotating hoisting frame is installed and constructed, a large crane is usually adopted to hoist each standard segment section by section, and finally, a top-layer segment and a truss are hoisted. Because the tower height is higher, high altitude hoist and mount construction danger is higher, and the arched bridge construction position generally is in mountain area or narrow river valley area, and large-scale hoisting equipment often can't expand, causes certain difficulty for the installation of arch rib vertical rotation hoisting frame.
Disclosure of Invention
The utility model discloses a problem that the hoist frame met in adopting large-scale loop wheel machine installation is erected to current arch rib to the purpose provides a from jacking formula arch rib erects to change hoist frame installing the system, need not large-scale loop wheel machine carry out the arch rib and erects to change the hoist frame installation to adapt to the construction condition in constrictive river valley area, and improve the installation and construction security.
The technical scheme of the utility model as follows:
the utility model provides a from lift-type arch rib erects to change hoisting frame installing the system which characterized in that: the lifting device comprises two lifting sleeves, wherein each lifting sleeve comprises 4 vertical rods, and the length of each vertical rod is greater than that of a standard section of the arch rib vertical rotation lifting frame; the upper ends of 4 vertical rods of each jacking sleeve frame are respectively welded with 4 corners at the bottom of a top-layer section of an arch rib vertical rotation lifting frame, a truss is fixedly erected at the tops of two top-layer sections, and an overhead travelling crane capable of moving longitudinally along the truss is mounted on the truss; two vertical jacking oil cylinders are arranged between two vertical rods of each jacking sleeve frame along two sides of the truss, the upper end of each jacking oil cylinder is connected with a cross rod of the top layer section through a pin shaft, and the lower ends of the two jacking oil cylinders are respectively connected with the top edge of a supporting beam through pin shafts; each vertical rod on the opposite sides of the two jacking sleeve frames is provided with a foldable triangular bracket, each triangular bracket comprises a bracket cross rod and an inclined supporting rod, one end of each bracket cross rod is connected with the vertical rod of the jacking sleeve frame through a pin shaft, the other end of each bracket cross rod is connected with the upper end of each inclined supporting rod through a pin shaft, and the lower end of each inclined supporting rod is connected with the vertical rod through a pin shaft; a vertical sliding groove is formed in the vertical rod and located below the joint of the bracket cross rod and the vertical rod, and a pin shaft connected with the inclined supporting rod and the vertical rod penetrates through the sliding groove and can slide up and down along the sliding groove.
The utility model discloses erect the top layer segment that changes hoisting frame with the arch rib and be connected in advance on ground with the truss, top layer segment bottom installation jacking cover frame, jacking cover frame cover is established on the standard segment of having installed the completion, it is greater than a standard segment height to jack the top layer segment at every turn through the hydro-cylinder, then carry with the overhead traveling crane of installing on the truss section by section and hang standard segment and install, need not adopt large-scale loop wheel machine, the construction does not receive the restriction of height and construction environment, there is stronger suitability, and the construction safety is high.
Drawings
FIG. 1 is a schematic view of the overall structure of a vertical rotation lifting frame of a arch rib;
FIG. 2 is a schematic front view of the self-raising arch rib vertical rotation lifting frame mounting system, wherein the triangular brackets on one side are in an unfolded state and the triangular brackets on the other side are in a folded state;
FIG. 3 is a schematic side view of a self-jacking rib riser mounting system;
FIG. 4 is a schematic view of two standard sections of the lowest part of two towers of the arch rib vertical rotation lifting frame in a mounted state;
FIG. 5 is a schematic view of the self-raising arch rib vertical rotation lift mount installation system in use;
FIG. 6 is a schematic view of the self-raising arch rib vertical rotation lift mounting system during the raising of the cylinder;
FIG. 7 is a schematic view of a crane in a standard section;
fig. 8 is a schematic view of a state where the crown block places the standard segment on the tripod rest;
FIG. 9 is a schematic view of the state of connecting and fixing the hoisted standard segment with the standard segment installed below;
FIG. 10 is a schematic view of two standard segments of the same height on two towers after installation is complete;
FIG. 11 is a schematic view showing a state where the connection between the support beam and a cylinder pin is released after the lift cylinder is contracted;
fig. 12 is a schematic view of the self-raising arch rib vertical turning hoist installation system before the next cycle of standard segment installation.
Detailed Description
As shown in fig. 2 and 3, the present invention includes two jacking frames, each of which includes 4 vertical rods 6, the length of each vertical rod 6 should be greater than the length of one standard segment of the arch rib vertical rotation lifting frame, and in specific implementation, the length of each vertical rod is preferably close to but not greater than the height of two standard segments; the upper ends of 4 vertical rods 6 of each jacking sleeve frame are respectively welded with 4 corners at the bottom of a top layer section 2 of an arch rib vertical rotation lifting frame, a truss 3 is fixedly erected at the top of the two top layer sections 2, and an overhead crane 7 capable of moving longitudinally along the truss is installed on the truss 3; two vertical jacking oil cylinders 8 are arranged between two vertical rods 6 of each jacking sleeve frame along two sides of the truss, the upper end of each jacking oil cylinder 8 is connected with a cross rod of the top layer section 2 through a pin shaft, and the lower ends of the two jacking oil cylinders 8 are respectively connected with the top edge of a supporting beam 9 through pin shafts; each vertical rod 6 on the opposite sides of the two jacking sleeve frames is provided with a foldable triangular bracket, each triangular bracket comprises a bracket cross rod 10 and an inclined strut 11, one end of each bracket cross rod 10 is connected with the vertical rod 6 of the jacking sleeve frame through a pin shaft, the other end of each bracket cross rod 10 is connected with the upper end of the corresponding inclined strut 11 through a pin shaft, and the lower end of each inclined strut 11 is connected with the corresponding vertical rod through a pin shaft; a vertical sliding groove 12 is formed in the vertical rod 6 and located below the joint of the bracket cross rod and the vertical rod, and a pin shaft connected with the inclined supporting rod 11 and the vertical rod 6 penetrates through the sliding groove 12 and can slide up and down along the sliding groove.
In fig. 2, the triangular bracket on the right jacking sleeve frame is in an unfolded state; the triangular bracket on the left jacking sleeve frame is in a folded state. The bracket cross rod 10 of the folding sleeve frame in the unfolding state rotates upwards, the pin shaft at the lower end of the inclined strut 11 can slide upwards along the sliding groove, when the bracket cross rod 10 rotates to be parallel to the vertical rod 6, the triangular bracket is converted into the folding state, and the pin shaft connecting the bracket cross rod and the inclined strut is inserted into the pin hole in the vertical rod, so that the triangular bracket is kept in the folding state.
When the self-jacking type arch rib vertical rotation lifting frame installation system is adopted to install the arch rib vertical rotation lifting frame, the specific construction method is as follows:
(1) as shown in fig. 4, according to the designed installation position of the arch rib vertical rotation lifting frame, the first standard sections 13 of the two towers of the vertical rotation lifting frame, which are positioned at the lowest part, are respectively fixed on the concrete foundation, and then the second standard sections 14 of the two towers are respectively hung on the two first standard sections 13 by a crane and are connected and fixed.
Welding a support plate 15 on the outer wall of each upright post transverse bridge of each standard segment close to the lower end in advance to serve as a support structure for jacking the jacking cylinder; the top of the supporting plate can be provided with a bayonet, so that two ends of the supporting beam can be clamped on the supporting plate to be kept stable in the subsequent process.
(2) As shown in fig. 5, the self-lifting arch rib vertical rotation lifting frame installation system is lifted to the installed standard segment by a crane, each lifting sleeve is sleeved on the periphery of the installed standard segment, 4 vertical rods 6 of each lifting sleeve correspond to 4 upright posts of the standard segment respectively, and the top-layer segment 2 is supported at the top of the second standard segment; two ends of a supporting beam 9 connected with the lower end of the jacking oil cylinder 8 are respectively supported on two supporting plates 15 at the lower part of the second standard segment.
(3) As shown in fig. 6, all the jacking cylinders 8 are synchronously started to lift the two top deck sections 2 upwards by more than one standard section.
(4) As shown in fig. 7, a third standard segment 16 of a tower is hoisted by a crown block 7 on the truss 3 to a height above the top of the triangular bracket on the jacking stock; unfolding a triangular bracket on a jacking sleeve frame on the tower frame on one side;
(5) as shown in fig. 8, the overhead travelling crane lifts the third standard section 16 over the deployed cam carrier and drops the third standard section onto the cam carrier; then, arranging a chain block 17 on the top layer segment and in the jacking sleeve frame, and connecting a chain block 18 of the chain block with the standard segment on the triangular bracket;
(6) as shown in fig. 9, the third standard segment 16 is moved into the jacking stock by the chain block 17 and is fixedly connected with the second standard segment 14 below.
Folding the triangular bracket on one side of the installed finished third standard segment; then, installing a third standard segment of the tower on the other side by adopting the same method;
(7) as shown in fig. 10, all the cylinders 8 are synchronously contracted, so that the top layer segment 2 is descended and supported on the top of the installed third standard segment 16, and the top layer segment 2 and the third standard segment 16 are temporarily connected and fixed;
(8) as shown in fig. 11, the oil cylinder 8 is further retracted, the supporting beam 9 connected with the lower end of the oil cylinder is lifted and separated from the supporting plate on the second standard segment, and then the pin connection between one oil cylinder and the supporting beam 9 is released, so that the supporting beam 9 is vertically suspended at the lower end of the other oil cylinder to avoid being blocked by the supporting plate on the third standard segment when lifted upwards;
(9) as shown in fig. 12, the oil cylinders 8 are further retracted, so that the lower ends of the oil cylinders rise above the supporting plate 15 at the lower part of the third standard section 16, and then the supporting beam 9 and the two oil cylinders 8 are connected by the pin shaft; and adjusting the expansion and contraction of the oil cylinder to support the two ends of the support beam 9 on the support plate 15 at the lower part of the third standard section.
(10) And (4) removing the connection between the top layer segment 2 and the third standard segment 16, and hoisting the subsequent standard segments in sequence by adopting the method of the steps (3) to (9).
(11) After all the standard sections of the tower frame 1 are installed, the top section 2 and the uppermost standard section of the tower frame are fixedly connected, then as shown in fig. 1, a ladder 18 is installed on the tower frame on one side, a constructor installs an operation platform 4 on the truss through the ladder, an arch rib hydraulic lifting system 5 is installed on the operation platform, and installation of the arch rib vertical rotation lifting frame is completed.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021207411.5U CN212612037U (en) | 2020-06-25 | 2020-06-25 | A self-lifting arch rib vertical rotation lifting frame installation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021207411.5U CN212612037U (en) | 2020-06-25 | 2020-06-25 | A self-lifting arch rib vertical rotation lifting frame installation system |
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| Publication Number | Publication Date |
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| CN212612037U true CN212612037U (en) | 2021-02-26 |
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|---|---|---|---|
| CN202021207411.5U Withdrawn - After Issue CN212612037U (en) | 2020-06-25 | 2020-06-25 | A self-lifting arch rib vertical rotation lifting frame installation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846573A (en) * | 2020-06-25 | 2021-12-28 | 中交路桥建设有限公司 | A system and method for installing a self-lifting arch rib vertical swivel lifting frame |
-
2020
- 2020-06-25 CN CN202021207411.5U patent/CN212612037U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846573A (en) * | 2020-06-25 | 2021-12-28 | 中交路桥建设有限公司 | A system and method for installing a self-lifting arch rib vertical swivel lifting frame |
| CN113846573B (en) * | 2020-06-25 | 2025-02-28 | 中交路桥建设有限公司 | Self-lifting arch rib vertical rotation lifting frame installation system and method |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210226 Effective date of abandoning: 20250228 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210226 Effective date of abandoning: 20250228 |