CN212316696U - Guide rail type mounting system of steel cable tower - Google Patents
Guide rail type mounting system of steel cable tower Download PDFInfo
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- CN212316696U CN212316696U CN202020738183.8U CN202020738183U CN212316696U CN 212316696 U CN212316696 U CN 212316696U CN 202020738183 U CN202020738183 U CN 202020738183U CN 212316696 U CN212316696 U CN 212316696U
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Abstract
The application discloses guide tracked mounting system of steel cable tower: the guide rail type jacking support comprises an inclined vertical guide rail, a guide rail support arranged on one inclined side of the vertical guide rail, a lifting power mechanism arranged at the top end of the vertical guide rail, and a traction wire which is led out from the lifting power mechanism and extends towards the bottom end of the vertical guide rail; the transport platform includes the follow the guide tracked jacking support outwards extends the platform that slides, the dolly that slides of translation on the platform that slides. This application has used guide tracked jacking support to carry out the installation of slope cable tower for the butt joint precision of cable tower obtains controlling, and the butt joint adjustability of cable tower improves, has reduced the operation degree of difficulty and the complexity of work progress, has also improved the security of construction.
Description
Technical Field
The utility model relates to a road and bridge construction field especially designs a guide tracked mounting system of cable wire tower.
Background
The butt joint control of the inclined cable tower column sections is very important work, if the butt joint axis of the inclined cable tower sections deviates from the original design axis greatly, the internal force of the structure can deviate from the design value obviously along with the progress of construction, and therefore construction accidents are caused.
The existing butt joint control of the tower column segment of the inclined cable tower is a process of tower crane hoisting, a special hoisting tool is adopted, a chain hoist is arranged on the hoisting tool, the gradient of the segment is adjusted by retracting and releasing the chain hoist, an axle sleeve type matching device and a guide plate are arranged on the inner side of a box wall plate between two butted segments, the segment can be temporarily butted to remove a lifting hook, the elevation and the plane position of the top surface of the segment are adjusted by a tool (upper and lower brackets) and a jack arranged in a box until the upper opening position meets the requirement, then butt welding seam welding is carried out, and the process can control the deviation of the butt joint axis of the tower column within 1/3000 tower height.
The main disadvantage of using the tower crane hoisting method to control the butt joint of the inclined cable tower is difficult operation. The tower crane high altitude hoist can lead to the rocking of pylon under the wind load effect to the error appears easily in the gradient that chain block comes control pylon, because the tower crane need attach the wall on installed segment section, the pylon of having installed can be because of the effect of horizontal force produces the deformation, has further increased the deviation for the butt joint. After the segments are temporarily butted, the bracket and the jack are required to be adjusted to enable the upper opening to meet the requirement, and the axis deviation is difficult to control to be within 1/3000 tower height.
Under the conventional condition, the axis deviation of a tower crane hoisting butt joint tower column is very difficult to control according to the tower height of 1/3000, the height of some inclined cable towers reaches more than 150m, the deviation reaches 50mm according to the tower height control of 1/3000, and the construction requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a guide tracked mounting system of steel cable tower for overcoming prior art's defect, through this application, can improve slope cable tower column butt joint control accuracy effectively.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a rail mounted system for a wire tower, comprising:
the guide rail type jacking support comprises an inclined vertical guide rail, a guide rail support arranged on one inclined side of the vertical guide rail, a lifting power mechanism arranged at the top end of the vertical guide rail, and a traction wire which is led out from the lifting power mechanism and extends towards the bottom end of the vertical guide rail;
the transport platform includes the follow the guide tracked jacking support outwards extends the platform that slides, the dolly that slides of translation on the platform that slides.
Preferably, the angle of inclination of the vertical guide rails is consistent with the design angle of inclination of the wire tower.
Preferably, the vertical guide rail comprises a set of vertical slide rails arranged along the surface contour of the cable tower body for supporting the cable tower body.
Further preferably, the vertical guide rail comprises at least two vertical slide rails which are not on the same plane and are used for supporting the steel cable tower body together.
Optionally, wedges with different inclination angles are arranged between the vertical sliding rails which are not on the same plane.
Further, the guide rail support comprises a group of first upright columns fixedly installed on the vertical guide rail, and a plurality of second upright columns which are connected with the first upright columns in an acute angle intersection mode and used for supporting the first upright columns in a reverse inclined mode.
Preferably, the bottom end of the first upright post is fixed on a bearing platform of the steel cable tower; and the bottom end of the second upright post is fixed on an upright post foundation adjacent to a steel cable tower bearing platform.
Specifically, a parallel connection is arranged between the first upright columns; the second upright columns are arranged in parallel, and reinforcing rods are arranged between the adjacent second upright columns.
Further, the pull wire includes a lifting section extending in a forward direction from the lifting power mechanism to a point where a pulling force is applied, and a reaction section extending in a reverse direction from the lifting power mechanism to a fixed engineering interface.
Optionally, the fixed engineering interface is a foundation for a bearing platform upper surface or the guide rail support.
Preferably, the sliding platform extends from the front face of the vertical guide rail to the top of the pier of the steel cable tower.
Optionally, the sliding platform extends from the front face of the vertical guide rail to the construction trestle through the top of the pier column of the steel cable tower.
Specifically, the transfer platform further comprises a horizontal slide rail for limiting the translation track of the sliding trolley on the sliding platform; the device also comprises a hoisting tool for assisting the steel cable tower section on the sliding trolley to adjust the posture.
Compared with the prior art, the utility model has the advantages of as follows:
1. the utility model provides a guide tracked mounting system of steel cable tower adopts the guide rail spacing through setting up guide tracked jacking support to control steel cable tower's line type, make steel cable tower's butt joint precision obtain control, improve 1/4000's tower height from 1/3000 tower height with conventional axis deviation.
2. The utility model provides a guide tracked mounting system of steel cable tower, the guide rail supports and adopts the first stand of slope and the second stand of the first stand of reverse slope support to constitute, not only when guaranteeing to support the stability, has simplified the design of the guide tracked jacking support of slope for the horizontal atress of this support, vertical atress is more clear and definite, controls the line type of slope pylon more easily.
2. The utility model provides a guide tracked mounting system of steel cable tower adopts and counterpoints, welds then promote at the platform that slides, and the adjustability of each middle step is stronger, is favorable to the control to the line type of steel cable tower.
3. The guide rail type installation system of the steel cable tower converts high-altitude operation such as segment butt joint and alignment welding into low-position platform operation, reduces operation difficulty and complexity, and improves construction safety.
Drawings
Fig. 1 is a schematic view of a rail-type mounting system of a cable tower of the present application.
Fig. 2 is a schematic view of a cross-sectional structure of a vertical rail of the rail mount system of the present application.
Fig. 3 is a state view before racking the docked segments with the rail-mounted mounting system of the steel cable tower of the present application.
Detailed Description
The present application is described in further detail below with reference to the attached drawings and the detailed description.
The guide rail type installation method of the steel cable tower can be realized through a guide rail type installation system of the steel cable tower, and the guide rail type installation method of the steel cable tower can be executed more efficiently and conveniently by utilizing the guide rail type installation system of the steel cable tower; the guide rail type installation method of the steel cable tower is a theoretical basis of a guide rail type installation system of the steel cable tower, the guide rail type installation system of the steel cable tower is an equipment basis implemented by the guide rail type installation method of the steel cable tower, and the guide rail type installation method of the steel cable tower and the guide rail type installation system of the steel cable tower are interdependent and mutually conditional.
As shown in fig. 1, before erecting the rail-type wire tower installation system 1, the bearing platform 23 and pier structure 22 of the wire tower 2 are substantially finished, and additionally, the fixed construction interface adjacent to the wire tower 2 is tamped for later use as the column foundation 3. The cable tower 2 will be divided into several tower segments 21 for butt installation. The guide rail type mounting system 1 of the cable tower comprises:
the guide rail type jacking bracket 11 comprises an inclined vertical guide rail 111, a guide rail support 112 arranged on one inclined side of the vertical guide rail 111, a lifting power mechanism 113 arranged at the top end of the vertical guide rail 111, and a traction wire 114 led out from the lifting power mechanism 113 and extending to the bottom end of the vertical guide rail 111;
the transfer platform 12 comprises a sliding platform 121 extending outwards from the guide rail type jacking bracket 11 and a sliding trolley 122 translating on the sliding platform 121.
Further, the inclination angle of the vertical guide rail 111 is consistent with the design inclination angle of the cable tower 2 for stabilizing the design linearity of the cable tower 2, and specifically, the vertical guide rail 111 is disposed at a side where the cable tower 2 is inclined to form an acute angle with the horizontal plane (or the ground), so that the vertical guide rail 111 supports the cable tower 2 from the back of the cable tower 2. The vertical guide rail 111 comprises a set of vertical slide rails 111 'for supporting the body of the cable tower 2, and preferably, each of the vertical slide rails 111' constituting the vertical guide rail 111 is arranged in parallel along the contour of the surface of the body of the cable tower 2. If the surface profile of the body of the cable tower 2 is curved, the vertical guide rail 111 is provided with at least two vertical slide rails 111' which are not on the same plane and are used for supporting the body of the cable tower 2 together. In this embodiment, referring to fig. 2, the vertical guide rail 111 is disposed on a longitudinal plane provided by the guide rail support 112, the width of the longitudinal plane is slightly greater than the maximum transverse width of the cable tower 2, the vertical guide rail 111 includes at least two vertical slide rails 111 'extending from the top end to the bottom end of the longitudinal plane and parallel to the longitudinal axis, each vertical slide rail 111' includes a rail pad beam 111a, a slide rail 111b and a slide block 111c, which are sequentially stacked, wherein the slide rail 111b and the slide block 111c can slide relative to each other, and the top surface of the slide block 111c directly abuts against the tower body surface of the cable tower 2; further, since the cross-sectional profile of the tower body of the illustrated cable tower 2 is curved, in order to ensure the support stability of the vertical guide rail 111 to the cable tower 2, two points of the tower body surface of the cable tower 2, which are not on the same plane, are selected as support points of the sliding blocks 111c, and the support points are dispersed as much as possible by axial symmetry of the cable tower 2, as shown in the figure, two vertical sliding rails 111' are disposed at positions of the curved contour line where the curvature is maximum, and the non-coplanarity of the sliding blocks 111c is realized by disposing the wedge blocks 111d with different inclination angles below each vertical sliding rail (specifically, below the rail pad beam 111 a).
With continued reference to fig. 1, the guide rail support 112 includes a set of first vertical pillars 1121 for fixedly mounting the vertical guide rail 111, and a plurality of second vertical pillars 1122 intersecting with the first vertical pillars 1121 at acute angles for supporting the first vertical pillars 1121 in a reverse-inclined manner, that is, the first vertical pillars 1121, the second vertical pillars 1122 and a horizontal plane form an acute-angled triangular bracket structure, and the same first vertical pillar 1121 is supported by a plurality of second vertical pillars 1122 parallel to each other. Preferably, the bottom end of the first upright 1121 is fixed on the bearing platform 23 of the cable tower 2; the bottom end of the second upright 1122 is fixed to the upright base 3 adjacent to the steel pylon 3, so that the bottom ends of the first upright 1121 and the second upright 1122 are not on the same horizontal plane in most cases. In order to enhance the structural stability of the guide rail support 112, a parallel connection 1123 is arranged between the first columns 1121, and a frame structure formed by the first columns 1121 and the parallel connection 1123 is mainly used as an installation plane of the vertical guide rail 111; a stiffener 1124 is disposed between adjacent second pillars 1122, and the stiffener may further include a parallel connection (not numbered) perpendicularly intersecting and connecting with the second pillars 1122, and a diagonal brace (not numbered) disposed between adjacent parallel connections in a crossing manner. Further, the angle between the first upright 1121 and the second upright 1122 should be determined according to the load borne by the guide rail support 112 and the state of the upright base 3, and in principle, should not exceed 90 °.
The lifting power mechanism 113 is fixedly arranged at the top end of the vertical guide rail 111, and is used for lifting the load from bottom to top through the traction line 114, particularly lifting from bottom to top along an angle defined by the vertical guide rail 111. The lifting power mechanism 113 should select a suitable power mechanism, such as a winch or a crane, according to the size of the load. The traction wire 114 includes a lifting section 1141 extending from the lifting power mechanism 113 in a forward direction to a tension application point, and further includes a reaction section 1142 extending from the lifting power mechanism 113 in a reverse direction, wherein the reaction section 1142 needs to be fixed to an engineering interface to provide a reaction force for lifting the tension. The fixed engineering interface is usually the upper surface of the bearing platform 23, the column foundation 3 or other fixed engineering interface adjacent to the installation system 1, and should be reasonably selected by the skilled person according to the requirement of counter force.
The transfer platform 12 is used to run the tower segments 21 of the steel cable tower 2 over the pier stud structure 22 for butt-fitting. Specifically, the sliding platform 121 of the transfer platform 12 extends from the front surface of the vertical guide rail 111 to the top of the pier stud structure 22, and the front surface of the vertical guide rail 111 is understood to mean a direction outside the range of the guide rail support 112, and the sliding platform 121 should not be limited to a platform that linearly connects the transfer starting place of the tower segment 21 to the upper side of the pier stud structure 22 according to the actual situation of the construction site. Further, the sliding platform 121 may be matched with the construction trestle 4 of the bridge engineering, that is, extend from the front surface of the vertical guide rail 111 to the construction trestle 4 through the top of the pier structure 22, so as to facilitate the transportation of the tower segment 21 unloaded from the construction trestle 4 to a specified position. Furthermore, since the bottom end of the guide rail support 112 is fixed on the bearing platform 23 or the column foundation 3, and the tower section 21 is installed on the pier structure 22, the sliding platform 121 is disposed at a position lower than the middle of the vertical guide rail 111. The skid cart 122 is used for directly transporting the tower segment 21, and in order to ensure the safety of transportation and improve the efficiency, the transfer platform 12 further includes a horizontal slide rail (not shown) defining the translation track of the skid cart 122 on the skid platform 121, and the horizontal slide rail can be laid by a known means. If the tower segment 21 is laid in a horizontal position when being unloaded at the construction trestle 4 or other position far away from the construction site of the cable tower 2, the tower segment 21 needs to be adjusted from the horizontal position to the vertical position before the tower segment 21 is transferred to the sliding trolley 122 (or before the sliding trolley is close to the butt joint installation position), and at this time, a hoisting tool 124 (such as a truck crane or a crawler crane) is also needed to assist in adjusting the position of the tower segment 21.
The guide rail type installation method of the steel cable tower comprises the following steps:
s1, erecting a guide rail type jacking support on one side of a steel cable tower pier column, and erecting a transfer platform on the pier column.
As shown in fig. 1, in the construction position of the wire tower 2, the jacking bracket 11 is erected on the inclined side of the wire tower 2 after the bearing platform 23 and the pier stud structure 22 are basically finished, and the structure of the jacking bracket 11 is as described above, that is, the jacking bracket comprises an inclined vertical guide rail 111, a rail support 112 arranged on the inclined side of the vertical guide rail 111, a lifting power mechanism 113 arranged at the top end of the vertical guide rail 111, and a traction wire 114 led out from the lifting power mechanism 113 and extending towards the bottom end of the vertical guide rail 111.
The transfer platform 12 comprises a sliding platform 121 extending outwards from the guide rail type jacking bracket 11 and a sliding trolley 122 translating on the sliding platform 121. The transfer platform 12 is used to connect the site of discharge of the tower section 21 to the site of butt-joint installation of the tower section 21.
S2, positioning the first segment at the top end of the segmented steel cable tower at the top of the pier column through a transfer platform;
from the top end of the wire tower as a counting start position, the tower segment 21 of the first segment is transferred from its unloading site (e.g. the construction trestle 4) over the pier structure 22 by means of the skid cart 122, the axial position of the tower segment 21 is adjusted with various adjustment means (e.g. three-way jacks and wedges) until it substantially coincides with the lofting line, and the sidewall surface of the tower segment 21 is brought into abutment against said vertical guide rail 111, whereby the positioning of the first segment is achieved.
Further, before the tower segment 21 is transferred to the upper part of the pier stud structure 22, if the tower segment 21 is in the horizontal posture at the construction trestle 4 or other unloading position, the conversion of the vertical posture on the sliding trolley 122 needs to be realized by the aid of the hoisting tool 124.
S3, after lifting the first segment with the guide-tracked jacking leg, seating a second segment below the first segment;
after the tower section 21 of the first section is correctly in place, the tower section 21 of the first section is lifted a distance along the vertical guide rails 111 using the lifting power mechanism 113 and the traction lines 114 of the tracked jacking brackets 11 so that the tower section 21 of the second section is in place over the pier stud structure 22, as shown in fig. 1.
Specifically, the lifting section 1141 of the traction wire 114 is led out from the lifting power mechanism 113, the tail end of the lifting section 1141 is connected with a preset lifting point on the outer side wall of the tower segment 21 of the first segment, the lifting point for lifting is arranged on the outer side wall of the tower segment 21, so that the lifting point can be conveniently moved from the previous segment to the next segment, and the operation space is large when a constructor performs lifting point conversion, so that the operation difficulty is reduced; furthermore, the hoisting points for lifting are preferably arranged on two adjacent side walls of the tower segment 21 facing the side walls tightly attached to the vertical guide rail 111, so that the pulling force required for lifting can be reduced, and the load requirement of the lifting power mechanism 113 can be reduced.
The tower section of the second section is in place on top of the pier stud in a similar manner to the tower section 21 of the first section: the tower section of the second section is transferred from its discharge site over the pier structure 22 by means of a skid cart 112, the position of the axis of this other extreme is adjusted with various adjustment means so as to substantially coincide with the lofting line, and the side wall surfaces of this tower section are brought into close proximity to said vertical guide rails 111.
S4, lifting the butted section after butt-welding the first and second sections to form the butted section;
referring to fig. 3, the lifting power mechanism 113 is reversely activated to lower the tower segment 21 of the first segment that has been lifted onto the top surface of the tower segment of the second segment, and then the tower segments 21 of the first segment and the tower segments of the second segment are butt-welded, so that the two tower segments that are butted into a whole form a butted segment 211. Next, the end of the lifting segment 11141 that transfers the traction wire 114 is fixed at the suspension point of the outer sidewall of the tower segment of the second segment, which is preferably disposed directly below the suspension point of the tower segment 21 of the first segment, so as to facilitate the suspension point switching operation by the constructor. Next, the traction wire 114 is pulled by the lifting power mechanism 113 again, and the butted section 211 is lifted a distance along the vertical guide rail 111, so that the next tower section (tower section of the third section) is put in place above the pier structure 11.
S5, mounting the rest segment by the mounting process cycle of the second segment;
the next tower segment is reserved in place above the pier stud structure 22 by the lifting process and the remaining tower segments are installed cyclically with the installation process of the second segment to progressively extend the steel cable tower from top to bottom. The mounting process of the second segment refers to steps S3 and S4 described above. Each time the lifting power mechanism 113 is used to perform a lifting process, the traction wire 114 is connected to the lowermost tower segment of the docked segment 211.
And S6, performing frame falling connection on the butted segments and the pier stud to finish the installation of the steel cable tower.
After the last tower segment is welded in alignment with the docked segment 211, the entire docked segment 211 may be subjected to a racking process. The term "racking" generally refers to the transfer of a load from a temporary support structure to a permanent support structure. The frame-falling connection in this embodiment means that the butted sections 211 supported by the rail-type jacking brackets 11 are transferred to the pier stud structure 22, and the butted sections 211 are supported by the pier stud structure 22, so as to complete the installation of the steel cable tower 2. Before the butted section 211 is connected with the pier stud structure 22 in a frame falling mode, the plane position and the height of the butted section 211 are adjusted, and final linear adjustment is conducted on the steel cable tower 2.
After the steel cable tower 2 is installed, the guide rail type jacking bracket 11 can be temporarily reserved as an auxiliary structure for supporting the steel cable tower 2 until the stay cable of the bridge needs to be installed. When the inclined stay cable is installed and debugged, the inclined steel cable tower 2 is in a force balance state, and the inclined state can be stably maintained.
In conclusion, the guide rail type jacking support is used for installing the inclined steel cable tower, so that the butt joint precision of the steel cable tower is controlled, the butt joint adjustability of the steel cable tower is improved, the operation difficulty and complexity in the construction process are reduced, and the construction safety is also improved.
The above embodiments are only preferred embodiments of the present application, but not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present application should be construed as equivalents and are included in the scope of the present application.
Claims (13)
1. A guide-rail type mounting system for a wire tower, comprising:
the guide rail type jacking support comprises an inclined vertical guide rail, a guide rail support arranged on one inclined side of the vertical guide rail, a lifting power mechanism arranged at the top end of the vertical guide rail, and a traction wire which is led out from the lifting power mechanism and extends towards the bottom end of the vertical guide rail;
the transport platform includes the follow the guide tracked jacking support outwards extends the platform that slides, the dolly that slides of translation on the platform that slides.
2. A rail-mounted system for a cable tower according to claim 1 wherein the angle of inclination of said vertical rail corresponds to the design angle of inclination of the cable tower.
3. A rail-mounted system for a cable tower as recited in claim 2, wherein said vertical rail comprises a plurality of vertical rails disposed along a contour of a surface of a body of the cable tower for supporting the body of the cable tower.
4. A rail-mounted system of a cable tower according to claim 3, wherein said vertical rail comprises at least two vertical rails not in the same plane for jointly supporting the cable tower body.
5. A rail-type mounting system for a cable tower according to claim 4, wherein wedges having different inclination angles are not provided between the vertical slide rails on the same plane.
6. The rail-type mounting system of a cable tower as claimed in claim 1, wherein said rail support comprises a set of first columns fixedly mounting said vertical rails, and a plurality of second columns connected to said first columns at an acute angle crossing for supporting said first columns in a reverse tilt.
7. The rail-type mounting system for a cable tower according to claim 6, wherein the bottom end of the first vertical post is fixed to a bearing platform of the cable tower; and the bottom end of the second upright post is fixed on an upright post foundation adjacent to a steel cable tower bearing platform.
8. The rail mount system of claim 6 wherein there is a parallel connection between said first uprights; the second upright columns are arranged in parallel, and reinforcing rods are arranged between the adjacent second upright columns.
9. The rail mount system of a cable tower of claim 1, wherein said traction wire includes a lifting section extending in a forward direction from said lifting jack to a point where tension is applied, and further includes a reaction section extending in a reverse direction from said lifting jack to a fixed engineering interface.
10. The rail mounted system of a wire tower of claim 9, wherein said fixed engineering interface is a foundation for a platform upper surface or said rail support.
11. The rail mount system of a steel cable tower of claim 1, wherein said glide platform extends from the front face of said vertical rail to the top of the pier of the steel cable tower.
12. A rail-mounted system for a wire tower as recited in claim 11, wherein said glide platform extends from a front face of said vertical rail through a top of an abutment of the wire tower to a construction trestle.
13. The rail mount system of claim 1, wherein the transfer platform further comprises horizontal slide rails defining a translation trajectory of the skid cart on the skid platform; the device also comprises a hoisting tool for assisting the steel cable tower section on the sliding trolley to adjust the posture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020738183.8U CN212316696U (en) | 2020-05-07 | 2020-05-07 | Guide rail type mounting system of steel cable tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020738183.8U CN212316696U (en) | 2020-05-07 | 2020-05-07 | Guide rail type mounting system of steel cable tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535188A (en) * | 2020-05-07 | 2020-08-14 | 中交路桥华南工程有限公司 | Guide rail type mounting system of steel cable tower |
| CN113404309A (en) * | 2021-05-31 | 2021-09-17 | 中国南方电网有限责任公司超高压输电公司 | Large-span dome structure spiral lifting system and method |
-
2020
- 2020-05-07 CN CN202020738183.8U patent/CN212316696U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535188A (en) * | 2020-05-07 | 2020-08-14 | 中交路桥华南工程有限公司 | Guide rail type mounting system of steel cable tower |
| CN113404309A (en) * | 2021-05-31 | 2021-09-17 | 中国南方电网有限责任公司超高压输电公司 | Large-span dome structure spiral lifting system and method |
| CN113404309B (en) * | 2021-05-31 | 2022-05-17 | 中国南方电网有限责任公司超高压输电公司 | Large-span dome structure spiral lifting system and method |
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