CN113684771B - Method for replacing hinge shaft of straddle type monorail tension support - Google Patents
Method for replacing hinge shaft of straddle type monorail tension support Download PDFInfo
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- CN113684771B CN113684771B CN202111115285.XA CN202111115285A CN113684771B CN 113684771 B CN113684771 B CN 113684771B CN 202111115285 A CN202111115285 A CN 202111115285A CN 113684771 B CN113684771 B CN 113684771B
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
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Abstract
The invention discloses a method for replacing a hinged shaft of a straddle-type monorail tension support, which comprises the steps of separating a lower support pendulum from a shear tenon and removing the fixation of the lower support pendulum; presetting the height of the jacking track beam; removing a release-preventing plate of a hinge shaft, clamping the hinge shaft, connecting the hinge shaft with a jacking and stretching mechanism, and drawing out the hinge shaft by utilizing the jacking and stretching mechanism; and pushing new hinge shafts into the shaft holes of the upper pendulum and the lower pendulum of the support and fixing the hinge shafts. The method for replacing the hinge shaft of the straddle type monorail tension support can replace and maintain the hinge shaft of the straddle type monorail tension support, eliminate potential safety hazards in time and ensure safe operation of a track.
Description
Technical Field
The invention relates to the field of rail transit, in particular to a method for replacing a hinged shaft of a straddle type monorail tension support.
Background
The monorail transportation is a rail transportation system which adopts rubber tires and runs on a rail beam integrating beam and rail, wherein vehicles run by straddling the rail beam, and the monorail transportation is called straddle type monorail transportation. The track beam is connected with a lower structure (pier stud and capping beam) through a tension support to form a monorail beam bridge system. The straddle type single-rail tension support is fixed above the cover beam and supports the rail beam. The straddle type monorail tension support comprises a support upper hem, a support lower hem and a shear resistant tenon fixed on a cover beam and used for limiting the support lower hem, and for the fixed support, the support upper hem and the support lower hem are connected through a hinge shaft. Because the hinge shaft of the straddle type single-rail cast steel tension support is damaged and rusted and abraded for a long time, potential safety hazards are generated, and a reliable and safe solution is urgently needed to be provided.
Disclosure of Invention
The invention aims to provide a method for replacing a hinge shaft of a straddle type monorail tension support, which can be used for guiding the replacement and maintenance of the hinge shaft of the straddle type monorail tension support, eliminating potential safety hazards in time and ensuring the safe operation of a track.
In order to achieve the aim, the invention provides a method for replacing a hinge shaft of a straddle type monorail tension support, which comprises the following steps:
separating the lower support pendulum from the shear tenon and releasing the fixation of the lower support pendulum;
jacking a track beam to a preset height;
removing a release-preventing plate of a hinge shaft, clamping the hinge shaft, connecting the hinge shaft with a jacking and stretching mechanism, and drawing out the hinge shaft by utilizing the jacking and stretching mechanism;
and pushing the new hinge shaft into the shaft holes of the upper support pendulum and the lower support pendulum and fixing the hinge shaft.
Optionally, the step of separating the support base lower hem and the shear tenon is as follows: and removing the wedging block at the shear tenon at the fixed end of the track beam.
Optionally, the step of separating the support base lower hem and the shear tenon comprises: and removing the seam plates at the two ends of the track beam.
Optionally, the step of releasing the fixing of the support base lower hem is as follows: and (4) removing the locknut on the anchor rod for fixing the lower hem of the support and loosening the fastening nut.
Optionally, the step of jacking the track beam to a preset height is as follows: and installing a jacking device at the shear tenon at the fixed end of the track beam, installing a dial indicator under the support, monitoring jacking data of the track beam, and stopping jacking the track beam when the jacking data is between 0.05mm and 0.10 mm.
Optionally, the step of clamping the hinge shaft and connecting the hinge shaft with the jacking mechanism comprises clamping a hinge shaft clamping device at the tail end of the hinge shaft, and connecting the jacking mechanism with the hinge shaft clamping device by using a jacking rod; the hinge shaft clamping device is provided with a clamping hole matched and fixed with the annular flange at the tail end of the hinge shaft, and the jacking and extending mechanism comprises a positioning sleeve and a hydraulic jacking and extending piece fixed on the positioning sleeve.
Optionally, the hydraulic jacking member is a hollow jack.
Optionally, the step of clamping the hinge shaft and connecting the hinge shaft with a jacking mechanism comprises: and a falling-preventing protection frame is arranged below the outer side of the shaft hole.
Optionally, the step of pushing a new hinge shaft into the shaft holes of the support top pendulum and the support bottom pendulum and fixing comprises: cleaning the shaft hole, smearing lubricating oil in the shaft hole, and pushing the hinge shaft into the shaft hole.
Optionally, the step of jacking the track beam to a preset height and the step of pulling out the hinge shaft by using the jacking mechanism include: and an inclined iron used for preventing the upper swing of the support and the lower swing of the support from longitudinally swinging is arranged between the upper swing of the support and the lower swing of the support.
Compared with the background technology, the invention provides a method for replacing a hinged shaft of a straddle-type monorail tension support, which can be applied to guide safe and efficient replacement of the hinged shaft of the straddle-type monorail tension support, the method comprises the steps of unlocking the lower hem of the support, jacking the track beam to preset height, keeping the upper hem of the support and the lower hem of the support to be properly lifted along with jacking of the track beam, further ensuring that shaft holes of the upper hem of the support and the lower hem of the support are aligned and superposed, locking the hinged shaft, pulling the hinged shaft out of a shaft hole by using a jacking mechanism, finally loading a new hinged shaft and re-fixing the upper hem of the support and the lower hem of the support.
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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method for replacing a hinge shaft of a straddle-type monorail tension support provided by the embodiment of the invention;
fig. 2 is a schematic view of a replacing hinge shaft of the straddle type monorail tension support provided by the embodiment of the invention.
Wherein:
the anti-falling device comprises a 1-bent cap, a 2-lower support pendulum, a 3-upper support pendulum, a 4-hinged shaft, a 5-shear tenon, a 6-track beam, a 7-jacking device, an 8-anti-falling plate, a 9-wedge, a 10-hinged shaft clamping device, an 11-jacking rod, a 12-positioning sleeve, a 13-cover plate, a 14-hydraulic jacking piece, a 15-limiting piece, a 16-anti-falling protection frame, a 17-telescopic component, an 18-fastening nut and a 19-anti-loosening nut.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Referring to fig. 1 and 2, fig. 1 is a flowchart of a method for replacing a hinge shaft of a straddle-type monorail tension support provided by an embodiment of the invention, and fig. 2 is a schematic diagram of a hinge shaft 4 for replacing a straddle-type monorail tension support provided by an embodiment of the invention.
The invention provides a method for replacing a hinge shaft of a straddle type monorail tension support, which comprises the following steps:
step S100: separating the support lower hem 2 from the shear tenon 5, and releasing the fixation of the support lower hem 2;
step S200: jacking the track beam 6 by a preset height;
step S300: detaching a release-preventing plate 8 of a hinge shaft 4, clamping the hinge shaft 4, connecting the hinge shaft 4 with a jacking and stretching mechanism, and drawing out the hinge shaft 4 by utilizing the jacking and stretching mechanism;
step S400: and pushing a new hinge shaft 4 into the shaft holes of the support upper pendulum 3 and the support lower pendulum 2 and fixing the hinge shafts.
In the step S100, the locking between the support lower hem 2 and the capping beam 1 is mainly released, the shear tenon 5 is fixed on the capping beam 1, and the wedging block is arranged between the shear tenon 5 and the support lower hem 2 to limit the longitudinal and transverse displacement of the support lower hem 2. Since the support lower hem 2 is fixed on the capping beam 1 by the anchor rod, and the fastening nut 18 and the locknut 19 are provided at the top end of the anchor rod, the step S100 of releasing the fixing of the support lower hem 2 further includes unscrewing the locknut 19, and then loosening the fastening nut 18 to generate a predetermined gap between the bottom end surface of the fastening nut 18 and the support lower hem 2, so that when the track beam 6 is jacked up, the support lower hem 2 can be slightly lifted up, and the shaft hole of the support lower hem 2 and the shaft hole of the support upper hem 3 are aligned, so as to extract the corroded or damaged hinge shaft 4.
This is because, under the gravity action of the track beam 6 and the support upper pendulum 3, the shaft hole of the support upper pendulum 3 inevitably presses the hinge shaft 4, so that the shaft holes of the support upper pendulum 3 and the support lower pendulum 2 generate a certain degree of vertical axis misalignment, and even if the misalignment is in millimeter level, the misalignment overlaps the corrosion of the hinge shaft 4 and the damage of the shaft hole to generate a large resistance to the extraction of the hinge shaft 4, so that the hinge shaft 4 is difficult to extract. Generally speaking, the construction requirement can be met only by loosening the fastening nut 18 by about 20mm relative to the anchor rod, and meanwhile, the complete separation of the support lower hem 2 relative to the cover beam 1 is avoided.
According to the method, the locking of the support lower hem 2 relative to the cover beam 1 is released through the step S100, the track beam 6 is jacked in the step S200 in a preset height mode, the support upper hem 3 and the support lower hem 2 are properly lifted, and the dislocation of the shaft hole between the support upper hem 3 and the support lower hem 2 is eliminated. The concrete operation of the step S200 of jacking the track beam 6 is to install a jacking device 7 such as a jack at the fixed end shear tenon 5 of the track beam 6, install a magnetic gauge stand, an adjusting bracket and a dial indicator at the support base lower hem 2, and monitor the jacking data of the beam body by means of the dial indicator. Meanwhile, a magnetic gauge stand, an adjusting frame and a dial gauge are arranged at the joint of the track beam 6 and the track beam 6, and the longitudinal displacement of the beam body is monitored. And then slowly applying pressure by using a jack, jacking the track beam 6, monitoring data of the dial indicator at the position of the support lower hem 2, stopping jacking the track beam 6 when the data reaches 0.05-0.10 mm, and removing the dial indicator and the like.
Step S300 is to perform an operation of withdrawing the hinge shaft 4 by first removing the separation preventing plate 8 at the outer end surface of the hinge shaft 4 and then clamping the end of the hinge shaft 4 by means of the hinge shaft clamping device 10. The hinge shaft clamping device 10 can adopt a radial contraction mechanism. In the embodiment of the present application, the hinge shaft clamping device 10 specifically uses two semi-cylindrical split castings, and the split castings can be connected into a whole by a fastening member connecting the two in the radial direction. The ladder groove is seted up to the one end of split type foundry goods, and the ladder groove of two split type foundry goods forms the card hole of the ladder-like of outer terminal surface department diameter less, and the great echelonment of inside diameter, with the help of the card hole and the terminal cyclic annular flange cooperation of hinge 4, connects fixedly hinge 4. Then, the hinge shaft clamping device 10 is connected with a jacking mechanism through a jacking rod 11, and the hinge shaft 4 is drawn out from the shaft hole by means of traction force or jacking force generated when the jacking mechanism extends.
Specifically, the jacking and extending mechanism comprises a positioning sleeve 12 and a hydraulic jacking and extending piece 14 fixed on the positioning sleeve 12, one end of the positioning sleeve 12 abuts against the outer end face of the support lower hem 2 at the peripheral part of the hinge shaft 4, the other end of the positioning sleeve 12 is connected with an annular cover plate 13, the hydraulic jacking and extending piece 14 is installed on the annular cover plate 13, the hinge shaft clamping device 10 is connected with the hydraulic jacking and extending piece 14 through a jacking rod 11, and the hinge shaft 4 is drawn out through hydraulic driving force generated by the hydraulic jacking and extending piece 14.
Preferably, the hydraulic jacking piece 14 is a hollow jack, the jacking rod 11 penetrates out of an inner cylinder of the hollow jack, and the stop piece 15 is used for realizing the stop. The limiting member 15 is locked on the outer end surface of the inner cylinder, and the limiting member 15 specifically adopts a nut matched with the jacking rod 11. When the inner cylinder of the hollow jack extends out, the outer end face of the inner cylinder acts on the limiting part 15, so that the jacking rod 11 is pushed to extend out, and the hinge shaft clamping device 10 is driven to draw out the hinge shaft 4. When the jacking and extending mechanism is installed, the positioning sleeve 12, the jacking rod 11 and the hollow jack are ensured to be coaxially installed and are coaxially arranged with the shaft holes at the upper support pendulum 3 and the lower support pendulum 2. And (4) removing the jacking and extending mechanism after the hinge shaft 4 is drawn out.
Preferably, after the track beam 6 is jacked up and before the hinge shaft 4 is drawn out, a wedge 9 is further arranged between the support upper swing 3 and the support lower swing 2 to prevent the support upper swing 3 and the support lower swing 2 from swinging longitudinally or laterally, and the wedge 9 can be replaced by a wedge such as a wood wedge.
And finally, executing a step S400 to slowly transfer the new hinge shaft 4 into the shaft holes of the support upper pendulum 3 and the support lower pendulum 2 and fixing the new hinge shaft. The fixing comprises the fixing of a hinge shaft 4 and the fixing of a support upper swing 3 and a support lower swing 2. The hinge shaft 4 is fixed and is specifically provided with a falling-off prevention plate 8. When the support upper pendulum 3 and the support lower pendulum 2 are fixed by adopting the inclined iron 9, firstly, the inclined iron 9, a dial indicator and other instruments are required to be dismounted, then the jacking device 7/jack at the shear resistant tenon 5 is slowly dismounted, and finally, the fastening nut 18 and the locknut 19 are screwed.
It should be noted that when a new hinge shaft 4 is installed, the shaft hole should be cleaned and a lubricating oil should be applied inside the shaft hole.
When the joint plates of the movable end, the fixed end guide surface and the stable surface of the track beam 6 are in good states and have no tooth collision phenomenon, the joint plates can not be detached. Otherwise, before the support base lower hem 2 and the shear tenon 5 are separated, the joint plates at the two ends of the track beam 6 are removed, and then the joint plates at the two ends of the track beam 6 are restored after the hinge shaft 4 is replaced.
In order to optimize the above embodiment, considering that the straddle-type monorail tension support is usually arranged on an overhead frame with the height greater than 8 meters, in order to prevent the hinge shaft 4 from falling to hurt people during the process of disassembling the hinge shaft 4. The method for replacing the hinge shaft of the straddle-type monorail tension support further comprises the step of installing a falling-prevention protection frame 16 right below the outer side of the shaft hole between the hinge shafts 4 extracted by the jacking mechanism, and the falling-prevention protection frame is fixed by using the bolt hole formed after the falling-prevention plate 8 is detached. The anti-falling protection frame 16 comprises a support body and a telescopic assembly 17 such as a telescopic rod piece, wherein the telescopic assembly 17 is arranged on the support body, the installation height of the anti-falling protection frame 16 is adjusted by the telescopic assembly 17, and the anti-falling protection frame is adaptive to construction of straddle type monorail tension supports with different heights. The telescopic assembly 17 is usually fixed on the bent cap 1 and is removed after construction.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The method for replacing the hinge shaft of the straddle-type monorail tension support provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A method for replacing a hinge shaft of a straddle type monorail tension support is characterized by comprising the following steps:
separating the lower support pendulum from the shear tenon and releasing the fixation of the lower support pendulum;
jacking the track beam to a preset height by using a jacking device arranged at the shear tenon;
removing a release-preventing plate of a hinge shaft, clamping the hinge shaft, connecting the hinge shaft with a jacking and stretching mechanism, and drawing out the hinge shaft by utilizing the jacking and stretching mechanism;
pushing a new hinge shaft into the shaft holes of the upper support pendulum and the lower support pendulum and fixing the hinge shafts;
the step of clamping the hinged shaft and connecting the hinged shaft with the jacking and extending mechanism comprises the steps of clamping a hinged shaft clamping device at the tail end of the hinged shaft and connecting the jacking and extending mechanism with the hinged shaft clamping device by using a jacking rod; the hinge shaft clamping device is provided with a clamping hole matched and fixed with an annular flange at the tail end of the hinge shaft, and the jacking and extending mechanism comprises a positioning sleeve and a hydraulic jacking and extending piece fixed on the positioning sleeve.
2. The method for replacing the hinge shaft of the straddle-type monorail tension support according to claim 1, wherein the step of separating the support lower hem from the shear tenon is as follows: and removing the wedging block at the shear tenon at the fixed end of the track beam.
3. The method for replacing a hinge shaft of a straddle-type monorail tension support according to claim 1, wherein the step of separating the support skirt from the shear tenon is preceded by the steps of: and removing the seam plates at the two ends of the track beam.
4. The method for replacing the hinged shaft of the straddle-type monorail tension support according to claim 1, wherein the step of releasing the fixing of the support bottom swing comprises the following steps: and detaching the locknut on the anchor rod for fixing the lower hem of the support and loosening the fastening nut.
5. The method for replacing the hinged shaft of the straddle-type monorail tension support according to claim 1, wherein the step of jacking the track beam to a preset height comprises the following steps: and installing a jacking device at the shear tenon at the fixed end of the track beam, installing a dial indicator under the support in a swinging manner, monitoring jacking data of the track beam, and stopping jacking the track beam when the jacking data is between 0.05mm and 0.10 mm.
6. The method for replacing the articulated shaft of the straddle-type monorail tension support according to claim 1, wherein the hydraulic jacking member is a hollow jack.
7. The method for replacing a hinge shaft of a straddle-type monorail tension support according to claim 1, wherein the step of clamping the hinge shaft and connecting the hinge shaft with a jacking mechanism is preceded by the steps of: and a falling-preventing protection frame is arranged below the outer side of the shaft hole.
8. The method for replacing a hinged shaft of a straddle-type monorail tension support according to claim 1, wherein the step of pushing a new hinged shaft into the shaft holes of the support top pendulum and the support bottom pendulum and fixing comprises the following steps: cleaning the shaft hole, smearing lubricating oil in the shaft hole, and pushing the hinge shaft into the shaft hole.
9. The method for replacing the hinge shaft of the straddle-type monorail tension support according to claim 1, wherein the step of jacking the track beam to a preset height and the step of pulling out the hinge shaft by using the jacking mechanism comprise: and an inclined iron used for preventing the upper swing of the support and the lower swing of the support from longitudinally swinging is arranged between the upper swing of the support and the lower swing of the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111115285.XA CN113684771B (en) | 2021-09-23 | 2021-09-23 | Method for replacing hinge shaft of straddle type monorail tension support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111115285.XA CN113684771B (en) | 2021-09-23 | 2021-09-23 | Method for replacing hinge shaft of straddle type monorail tension support |
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| Publication Number | Publication Date |
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| CN113684771A CN113684771A (en) | 2021-11-23 |
| CN113684771B true CN113684771B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111115285.XA Active CN113684771B (en) | 2021-09-23 | 2021-09-23 | Method for replacing hinge shaft of straddle type monorail tension support |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005097865A (en) * | 2003-09-22 | 2005-04-14 | Otaki Yuatsu:Kk | High-rise horizontal member jack-down method, and jack to be used for the same |
| CN2934344Y (en) * | 2006-08-11 | 2007-08-15 | 重庆大学 | Light railway girder lifting device |
| CN108589560B (en) * | 2018-04-04 | 2019-06-21 | 武汉二航路桥特种工程有限责任公司 | Bridge cast steel list roller support correction restorative procedure |
| CN212477286U (en) * | 2020-06-02 | 2021-02-05 | 湖南柏宇建设工程咨询有限公司 | Movable hinge shaft support for straddle type monorail steel beam |
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Inventor after: Han Ge Inventor after: Chen Xiaoji Inventor after: Luo Cong Inventor after: Zhou Huashun Inventor after: Pan Li Inventor after: Liu Yang Inventor after: Zhang Yanzhen Inventor after: Zhuo Yangxu Inventor after: Yang Fuqiang Inventor after: Cheng Xuehong Inventor after: Zheng Lun Inventor after: Chen Junlin Inventor after: Zhang Jinhui Inventor after: Liu Hongwei Inventor before: Han Ge Inventor before: Zhou Fashun Inventor before: Pan Li Inventor before: Liu Yang Inventor before: Zhuo Yangxu Inventor before: Cheng Xuehong Inventor before: Zheng Lun Inventor before: Chen Junlin Inventor before: Zhang Jinhui Inventor before: Liu Hongwei Inventor before: Yang Fuqiang Inventor before: Luo Cong |
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