CN212388380U - Support type mounting system of steel cable tower - Google Patents

Abstract

The application discloses a posture installing the system of steel cable tower includes: the vertical lifting support comprises a vertical lifting well and a support bracket arranged at the top end of the lifting well; the power mechanism group comprises a vertical jack and a transverse jack which are arranged on the support bracket; a transfer platform including a glide platform extending outwardly from the vertical lift support and at least to a landing position of the cable tower, and a glide cart translating on the glide platform. This application has used vertical lifting 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

Support type mounting system of steel cable tower

Technical Field

The application relates to a road and bridge construction field especially relates to a posture installing the 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 purpose of this application is, for overcoming prior art's defect, provides a posture installing the system of steel cable tower, through this application, can improve slope cable tower column butt joint control accuracy effectively.

In order to achieve the technical purpose, the technical scheme adopted by the application is as follows:

a trestle mounting system for a wire tower, comprising:

the vertical lifting support comprises a vertical lifting well and a support bracket arranged at the top end of the lifting well;

the power mechanism group comprises a vertical jack and a transverse jack which are arranged on the support bracket;

a transfer platform including a glide platform extending outwardly from the vertical lift support and at least to a landing position of the cable tower, and a glide cart translating on the glide platform.

Specifically, the support bracket is disposed off of the lift well top wellhead.

Further, a first traction line which faces vertically downwards is led out from the vertical jack to the interior of the lifting well.

Preferably, a guide member and a temporary support member are arranged in the lifting well.

More preferably, the sliding platform extends from the construction trestle to a landing position of the steel cable tower through the lifting well, and a transverse limiting mechanism is arranged at the tail end close to the landing position.

Furthermore, the bottom of the lifting well is provided with a first opening communicated with the sliding platform, so that the sliding trolley can carry goods and move into the lifting well.

Furthermore, one section of the sliding platform, which is communicated with the lifting shaft and the steel cable tower drop frame, is arranged along the transverse bridge direction, and the lifting shaft is provided with a second opening so as to realize the drop frame butt joint of the butted sections.

Preferably, the transverse limiting mechanism is arranged on a component fixed with the falling frame.

Optionally, the component fixed to the falling frame is a lower tower column, a main longitudinal beam section or a construction platform.

Furthermore, the support bracket comprises an outer suspension arm which is externally suspended on the lift well, and a traction power mechanism and a second traction line which is vertically downward and led out from the traction power mechanism are arranged on the outer suspension arm.

Preferably, the front end of the transverse jack is provided with a roller.

Compared with the prior art, the method has the following advantages:

1. the application's posture installing the system of steel cable tower, through erectting vertical lift support, control steel cable tower's line type in vertical lift support for steel cable tower's butt joint precision obtains control, improves 1/4000's tower height from 1/3000 tower height with conventional axis deviation.

2. The utility model provides a support formula mounting system of steel cable tower, the slope part of pylon adopts counterpoint, welding then promote in vertical lifting support, and its lower extreme of control after the slope part butt joint of pylon is accomplished erects to change, then carries out the butt joint of putting down with the cushion cap part, and the adjustability of each step in the middle is stronger, is favorable to the control to the line type of steel cable tower.

3. The support type mounting 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 state view of a pylon to which the present application is applied, before the first and second segments are butted together.

Fig. 2 is a view showing a state of butt joint of intermediate segments of a cradle type mounting system to which the cable tower of the present application is applied.

Fig. 3 is a state view before the bottom ends of the butted segments are laterally translated, using the pylon mounting system of the present application.

Fig. 4 is a state view after the bottom ends of the butted segments are transversely translated, using the outrigger 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 bracket type installation method of the steel cable tower can be realized through the bracket type installation system 3 of the steel cable tower, and the bracket type installation method of the steel cable tower can be executed more efficiently and conveniently by utilizing the bracket type installation system 3 of the steel cable tower; the bracket type installation method of the steel cable tower is a use method of the bracket type installation system 3 of the steel cable tower, the bracket type installation system 3 of the steel cable tower is equipment implemented by the bracket type installation method of the steel cable tower, and the bracket type installation method of the steel cable tower and the bracket type installation system 3 of the steel cable tower are interdependent and mutually conditional.

As shown in fig. 1, before erecting the trestle mounting system 3 of the cable tower, the cap and lower tower 1 of the cable tower have been substantially finished and additionally the foundation adjacent to said cable tower has been tamped with a treatment ready for subsequent erection of the necessary trestle or platform thereon. The cable tower will be divided into a number of tower segments 2 for butt installation.

The trestle mounting system 3 of the cable tower comprises:

a vertical lift bracket 31 including a vertical lift well 311 and a support bracket 312 disposed at a top end of the lift well 311;

a power mechanism set 32 including a vertical jack 321 and a horizontal jack 324 provided on the support bracket 312;

a transfer platform 33 comprising a sliding platform 331 extending outwardly from said vertical lifting support 31 and at least to the landing position 11 of the steel cable tower, and a sliding trolley 332 translating on said sliding platform 331.

In particular, said lift well 311 is vertically arranged immediately outside the cross-over of the lower tower 1, the foundation part of the lift well 311 being preferably independent of the lower tower 1, i.e. the foundation of the lift well 311 is not arranged on the platform of the cable tower or attached to the lower tower 1, so that the lift well 311 provides sufficient support; the lift shaft 311 is made of steel and is assembled into a square shaft structure, the top of the lift shaft is provided with a well head, the bottom 3112 of the lift shaft is provided with a lateral opening, and a reinforcing rod (not shown) is arranged at a necessary position. Further, the top wellhead 3111 is provided with a support bracket 312. In order to ensure the penetration of the top wellhead 3111, the support bracket 312 is arranged to avoid the top wellhead 3111, in particular to run along the steel material at the top of the lift well 311, and the overhang portion forms an overhang 3121 outside the lift well 311, and in order to ensure the stability of the overhang 3121, a triangular support structure is arranged to connect the overhang 3121 with the lift well 311.

Further, the power mechanism set 32 is mainly disposed on the support bracket 312, and applies traction power from the top of the lift well 311, including:

a vertical jack 321 provided at a top wellhead 3111 of the elevator shaft 311 and drawing a first pull line 322 vertically downward into the elevator shaft 311. In order to achieve accurate docking of the tower section 2, a plurality of the vertical jacks 321 should be arranged at the top wellhead 3111 to provide a plurality of lifting control points, and correspondingly, each vertical jack 321 leads out a first traction line 322 to a corresponding lifting control point, which falls on the lifting point 323 of the tower section 2 in this embodiment. The vertical jack 321 guides the tower segment 2 to complete accurate linear docking in the lift well 311 by providing a lifting power in a vertical direction, and a guide and a temporary support are required during the lifting and docking of the tower segment 2, and a corresponding guide member 3115 and a temporary support member 3116 can be arranged in the lift well 311;

a lateral jack 324 is preferably provided at a location on the outer cantilever 3121 of the support bracket 312 near the top wellhead 3111 of the lift well 311 to provide lateral bridge thrusting power. The lateral jacks 324 may be configured in one or more according to the width of the cross section of the tower section 2. The transverse jack 324 assists the linear docking of the docked tower segment 2 with the lower tower column 1 by providing transverse bridge-direction jacking power, and in order to ensure the stability of the docking process, it is preferable to provide a roller 325 at the front end of the transverse jack 324 and a limit beam at the opposite side of the top wellhead 3111 of the lifting well 311 to ensure the stability of the docked segment 23 before the completion of the integral docking;

and a traction power mechanism 326 which is provided at the outer cantilever 3121 of the support bracket 312, does not interfere with the traverse jack 324, and vertically draws the second traction wire 327 downward. The traction power mechanism 326 is mainly used for adjusting the posture of the tower segment 2 before entering the lift shaft 311, and can be arranged as required, and in addition, because the dead weight of the single tower segment 2 is relatively small, the traction power mechanism 326 can use a winch, and preferably cooperates with a pulley block to lead out the second traction line 327.

Further, the transfer platform 33 includes a sliding platform 331 and a sliding trolley 332.

The sliding platform 331 extends outward from the vertical lifting support 31, on the one hand, to the operation starting place of the tower segment 2, such as a corresponding construction trestle, and according to the actual situation of the construction site, the sliding platform 331 should not be limited to a platform that connects the construction trestle and the landing position 11 in a straight line; on the other hand, the sliding platform 331 extends to the landing position 11 of the lower tower column 1, preferably, the sliding platform 331 is connected to the vertical lifting bracket 31 and a section of the lower tower column 1 and is arranged along the transverse bridge direction, and the height of the sliding platform 331 is similar to the height of the top of the lower tower column 1, that is, the sliding platform 331 is substantially flush with the top of the lower tower column 1, or is slightly higher than the top of the lower tower column 1, or is slightly lower than the top of the lower tower column 1. A plurality of support columns are arranged below the sliding platform 331, and are connected with steel materials vertically arranged on the lifting well 311 through reinforcing rods in order to ensure the stability of the whole vertical lifting support 31.

The skid trolley 332 can translate on the skid platform 331 for transporting the turret section 2 or the docked section 23. The sliding trolley 332 can be a flat car with a belt wheel, and both horizontal tower sliding and vertical tower sliding are considered; preferably, a track can be arranged on the sliding platform 331 for the sliding trolley 332 to slide under the limitation of the track, so as to improve the efficiency of the transporting turret section 2; more preferably, a limiting mechanism is arranged at the end of the sliding platform 331, especially a transverse limiting mechanism 333 is arranged at the front end of the falling position 11 close to the lower tower column 1, and since the sliding trolley 332 does not move forward after moving to the falling position 11, the transverse limiting mechanism 333 is arranged to limit the sliding trolley 332 to continue sliding transversely. The lateral limiting mechanism 333 is also used to assist the drop frame docking of the docked segment 23. In order to ensure that the lateral limiting mechanism 333 provides sufficient reaction force to assist the landing, the lateral limiting mechanism 333 is preferably disposed on the member 4 fixed to the landing position 11, and in this embodiment, the member 4 fixed to the landing position 11 may be the lower tower column 1, a main longitudinal beam already erected on the lower tower column 1, or another construction platform erected on the lower tower column 1.

In the process of installing the cable tower, the sliding trolley 332 needs to transport the tower segment 2 from the construction trestle into the shaft lift 311, therefore, the shaft lift 311 needs to be provided with a first opening 3113 at one side of the beam of the sliding trolley 332, and the height of the first opening 3113 needs to meet the requirement that a single tower segment 2 is erected into the shaft lift 311. Further, after completing the docking process of the tower segment 2, the sliding cart 332 needs to drive the bottom of the docked segment 23 to laterally translate to the landing position 11, and at this time, a part of the docked segment 23 is exposed to the outside of the lift well 311 in an inclined manner, so that the lift well 311 needs to be provided with a second opening 3114 on the side facing the landing position 11, and the height of the second opening 3114 needs to meet the requirement that the docked segment 23 is exposed to the lift well 311 in an inclined manner for landing. Preferably, the first opening 3113 and the second opening 3114 are opposite to each other, and the sliding platform 331 is linearly penetrated through.

The support type installation method of the steel cable tower comprises the following steps:

s1, erecting a vertical lifting bracket 31 at one side of a tower column 1 below the cable tower;

the present application is particularly applicable to obliquely disposed steel cable towers, in which the inclination direction of the steel cable tower is inclined to the outside of the main longitudinal beam substantially along the transverse bridge direction as shown in fig. 1, and the vertical lifting bracket 31 is erected on the inclined side of the steel cable tower, that is, vertically disposed to the outside of the transverse bridge next to the lower tower column 1, in order to match the inclination direction of the steel cable tower. If the inclination direction of the cable tower varies in other embodiments, the erection position of the vertical lifting bracket 31 needs to be properly adjusted.

The vertical lifting bracket 31 specifically comprises a vertical lifting well 311 and a support bracket 312 arranged at the top end of the lifting well 311; further, a power mechanism set 32 is disposed on the support bracket 312, the power mechanism set 32 includes a vertical jack 321 and a horizontal jack 324, and a traction power mechanism 326 is disposed in an overhanging manner if necessary. The specific construction of the vertical lifting support 31 is described above.

S2, transferring the first segment 21 of the top end of the segmented cable tower into position within the vertical lifting bracket 31;

referring to fig. 1, at the lower end of the vertical lifting support 31, a transfer platform 33 is provided, the transfer platform 33 comprising a sliding platform 331 extending outwardly from the vertical lifting support 31 and at least to the landing position 11 of the cable tower, and a sliding trolley 332 translating on the sliding platform 331.

From the top end of the cable tower as a counting start position, the tower segment 2 of the first segment 21 is transferred from its unloading site (e.g. a construction trestle) into the shaft 311 by means of the skid steer carriage 332, in particular, from the first opening 3113 of the shaft 311 into the interior of the shaft 311, and then the axial position of the current tower segment 2 is adjusted by means of the vertical jack 321 until it substantially coincides with the axis of the shaft 311, thereby achieving the positioning of the first segment 21. It can be understood by those skilled in the art that, on the basis of the vertical jack 321, other devices may be additionally provided to assist the first section 21 to be in place, such as a wedge-shaped cushion block, a chain block, a limiting block, and the like.

Further, before the first section 21 is transferred to the interior of the lift shaft 311, if the first section 21 is in the horizontal posture at the construction trestle or other unloading position, the first section 21 needs to be converted from the horizontal tower sliding state to the vertical tower sliding state by the aid of the traction power mechanism 326 to realize the conversion of the vertical posture on the sliding trolley 332.

S3, after lifting the first segment 21 within the vertical lifting bracket 31, seating the second segment 22 below the first segment 21;

after the first section 21 is correctly positioned inside the lift well 311, the first section 21 is synchronously lifted a distance with the vertical jack 321 so that the second section 22 is positioned inside the lift well 311.

The second section 22 is in position inside the lift well 311 in a similar way to the first section 21: the second section 22 is transferred from its unloading site to the interior of the shaft 311 by means of the skid steer carriage 332, and the axial position of the current tower section 2 is adjusted by means of the vertical jacks 321 until it substantially coincides with the axis of the shaft 311.

S4, lifting the butted section 23 after butt-welding the first section 21 and the second section 22 to form the butted section 23;

the vertical jacks 321 are reversely activated to lower the first section 21, which has been lifted a distance, onto the top surface of the second section 22, and then the first section 21 and the second section 22 are butt-welded, so that the two tower sections 2, which are integrated after butt-joint, form a butt-joint section 23. Next, the docked segment 23 is synchronously lifted a distance along the axis of the lift shaft 311, again using said vertical jack 321, in order to facilitate the positioning of the next tower segment 2 (third segment) inside the lift shaft 311.

Referring to fig. 2, since the self weight of the docked segment 23 including at least two tower segments 2 is increased, and the lifting is easy to be unstable only by means of the vertical jack 321 and the first traction line 322 extending therefrom, there is a safety risk, and therefore, a guide member 3115 and a temporary support member 3116 need to be arranged in the lifting well 311, in this embodiment, the guide member 3115 may be an inverse hanging bracket arranged at a lower section in the lifting well 311, the temporary support member 3116 may be a support bracket arranged closely below the inverse hanging bracket, and the distance from the support bracket to the sliding platform 331 needs to be greater than the height of a single tower segment 2, so as to facilitate the smooth sliding of the subsequent tower segment 2 into the lifting well 311.

S5, mounting the remaining segments in the mounting process cycle of the second segment 22;

the next tower segment 2 is reserved in place inside the lift shaft 311 by the lifting process and the remaining tower segments 2 are installed cyclically with the installation process of the second segment 22 to lengthen the cable tower from top to bottom step by step. The mounting process of the second segment 22 refers to the above-mentioned steps S3 and S4.

Referring to fig. 2, as the docked section 23 is extended, especially when the top end of the docked section 23 exceeds the top wellhead 3111 of the lifting well 311, the vertical jack 321 cannot lift the docked section 23 as a whole by lifting the first section 21, the lifting point 323 of the first traction wire 322 may need to be moved downward on the docked section 23 to adjust the lifting point 323, alternatively, several lifting brackets may be uniformly arranged on the sidewall surface of the docked section 23 as the lifting points 323, preferably, the lifting brackets are arranged on the same horizontal height, that is, circumferentially arranged on the sidewall of the docked section 23 at a preset height, and the number of the lifting brackets corresponds to the number of the vertical jacks 321 one by one.

S6, laterally translating the bottom end of the docked section 23 to the top end of the lower tower column 1;

by the step S5, the butt-splicing process of all tower segments 2 has been completed, and the vertical lifting brackets 31 need to be adjusted for the subsequent process. Specifically, the transverse jack 324 is added on the top of the lift well 311, the front end of the transverse jack 324 is provided with a roller 325, and a limit beam is arranged on the opposite side of the top well head 3111 of the lift well 311; removing the guide member 3115, temporary support member 3116 inside the lift well 311; the vertical jack 321 and lifting corbels at the top of the lifting well 311 are removed. In addition, after the last tower segment 2 is docked, the skid trolley 332 below that tower segment 2 remains, as shown in fig. 3.

The bottom end of the docked section 23 is driven by the skid cart 332 to translate laterally through the second opening 3114 of the lift shaft 311 to the landing position 11, using the roller 325 as a fulcrum. In this embodiment, the sliding trolley 332 can be pulled by a winch to move horizontally, and in order to prevent the moving distance of the sliding trolley 332 from exceeding a safety range, the transverse limiting mechanism 333 is arranged at the front end of the frame falling position 11. Preferably, the drop frame position 11 is designated at the top of the lower tower 1 after the lower tower 1 is poured, so that the transverse limiting mechanism 333 is arranged closely to the top of the lower tower 1, and in this embodiment, the transverse limiting mechanism 333 is arranged on the main longitudinal beam already erected on the lower tower 1, as shown in fig. 4.

After the bottom of the butted joint section 23 is transversely translated, a part of the butted joint section 23 is obliquely exposed out of the lifting well 311 from the second opening 3114, if the positional relationship between the butted joint section 23 and the landing position 11 after the transverse translation does not meet the preset linear requirement of the cable tower, the transverse jack 324 can be used for adjustment, and the transverse limiting mechanism 333 provides a reaction force for the transverse pushing.

And S7, performing frame falling connection on the butted joint sections 23 and the lower tower column 1 to complete the installation of the steel cable tower.

Before the butted section 23 is connected with the lower tower column 1 in a falling mode, the sliding trolley 332 is replaced by a vertical jack 321 or a three-way jack, and the vertical jack or the three-way jack is used for adjusting the plane position, the height and the line shape of the butted section 23. And finally, completing a frame falling process by using the replaced vertical jack 321 or three-way jack so as to be convenient for the butted section 23 after frame falling to be permanently connected with the lower tower column 1.

In conclusion, the installation of the inclined steel cable tower is carried out by using the vertical lifting support, 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 (11)

1. A outrigger mounting system of a wire tower, comprising:

the vertical lifting support comprises a vertical lifting well and a support bracket arranged at the top end of the lifting well;

the power mechanism group comprises a vertical jack and a transverse jack which are arranged on the support bracket;

a transfer platform including a glide platform extending outwardly from the vertical lift support and at least to a landing position of the cable tower, and a glide cart translating on the glide platform.

2. The rack mount system for a cable tower of claim 1, wherein said support bracket is disposed off of a wellhead at the top of said lift well.

3. The pylon mounting system of claim 1 wherein the vertical jack directs a first pull line vertically downward into the hoistway.

4. The outrigger mounting system of a cable tower of claim 1 wherein a guide member and a temporary support member are provided within the lift well.

5. The outrigger mounting system of claim 1 wherein the skid platform extends from a construction landing through the lift shaft to a landing location of the cable tower and a lateral stop mechanism is provided near an end of the landing location.

6. The outrigger mounting system of claim 5 wherein the bottom of the hoistway is provided with a first opening in communication with the skid platform to facilitate the movement of skid cart loads into the hoistway.

7. The outrigger mounting system of claim 6 wherein the sliding platform connects the lift shaft to the cable tower landing position along the transverse bridge and the lift shaft defines a second opening to facilitate landing docking of the docked segments.

8. The pylon mounting system of claim 5 wherein the lateral stop mechanism is provided on a member fixed in position to the drop frame.

9. The outrigger mounting system of a steel cable tower as claimed in claim 8, wherein the member fixed with the drop frame position is a lower tower column, a girder section or a construction platform.

10. The outrigger mounting system of claim 1 wherein the support bracket includes an outer boom cantilevered from the lift well, the outer boom having a traction mechanism disposed thereon and a second vertically downward traction wire extending therefrom.

11. The bracket type mounting system of a cable tower as claimed in claim 1, wherein the traverse jack is provided at a front end thereof with a roller.

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