A steel tower unilateral climbing lifting formwork and its application in an inclined single-column steel cable tower

Abstract

The present application discloses a steel tower single-side climbing lifting formwork, which includes a self-climbing system, a lifting system attached to the self-climbing system, and a lifting power system installed on the lifting system; wherein the self-climbing system includes an anchoring seat embedded in one side of the structure surface, a track attached to the anchoring seat, and a climbing assembly hooked on the track; the lifting system is attached to the climbing assembly and extends a lifting arm to the opposite side of the fixed surface of the self-climbing system; the lifting power system includes a power assembly arranged on the lifting arm to perform lifting and translation processes. Also disclosed is a method for installing an inclined single-column steel cable tower, which is installed using the steel tower single-side climbing lifting formwork. The present application uses the cable tower itself for self-climbing, does not require a separate foundation and ground support, reduces the height of the lifting formwork, realizes ultra-high lifting, has strong safety, and high construction efficiency.

Description

Technical Field

[0001] The present application relates to the field of bridge construction, and in particular to a steel tower single-side climbing lifting formwork and its application in an inclined single-column steel cable tower. Background Art

[0002] The control of the docking of inclined tower column segments is a very important task. If the axis of the docking of the inclined tower segments deviates greatly from the original design axis, as the construction progresses, the internal force of the structure will significantly deviate from the design value, thus causing construction accidents.

[0003] The current control of the butt joint of the tower column segments of the inclined cable tower adopts the tower crane hoisting technology. By utilizing the relevant existing technology, the deviation of the tower column butt joint axis can be controlled within 1 / 3000 of the tower height.

[0004] The main disadvantage of using a tower crane to control the docking of inclined cable towers is that it is difficult to operate. The high-altitude hoisting of the tower crane will cause the tower column to sway under the action of wind load. It is easy to make errors when controlling the inclination of the tower column with a chain hoist. Since the tower crane needs to be attached to the wall on the installed segment, the installed tower column will be deformed due to the action of horizontal force, which further increases the deviation of the docking. After the temporary docking of the segment, the bracket and jack need to be adjusted to make the upper mouth meet the requirements. At this time, it is very difficult to control the axis deviation to within 1 / 3000 of the tower height. Under normal circumstances, it is very difficult to control the axis deviation of the tower column of the tower crane according to 1 / 3000 of the tower height. Some inclined cable towers are more than 150m high. According to 1 / 3000 of the tower height, the control deviation reaches 50mm, which cannot meet the construction requirements.

[0005] In addition, the lifting construction of large steel tower column segments is a high-altitude lifting operation, especially in some areas with complex geological conditions, where the foundation cannot meet the lifting requirements. If it is required to erect an inclined cable tower in this area, it will seriously affect the safety of the steel tower segment lifting construction, and it is very easy to cause safety accidents such as collapse. Summary of the invention

[0006] The purpose of the present application is to at least partially overcome the defects of the prior art, to provide a lifting formwork that is easy to operate and has high construction efficiency, and to apply the lifting formwork to an inclined single-column steel cable tower.

[0007] In order to achieve the above technical objectives, the technical solutions adopted in this application are as follows:

[0008] The first is a steel tower single-side climbing lifting formwork, which includes a self-climbing system, a lifting system attached to the self-climbing system, and a lifting power system installed on the lifting system; wherein,

[0009] The self-climbing system comprises an anchoring seat pre-buried on one side of the structure surface, a track attached to the anchoring seat, and a climbing component hooked on the track;

[0010] The hoisting system is attached to the climbing assembly and extends a hoisting arm to the opposite side of the fixing surface of the self-climbing system;

[0011] The lifting power system includes a power assembly arranged on the lifting arm to perform lifting and translation processes.

[0012] Specifically, two ends of the track are attached to the anchoring seat, and two adjacent tracks are connected end to end and attached to the same anchoring seat.

[0013] Preferably, the self-climbing system comprises at least 3 of the tracks and 2 sets of the climbing components.

[0014] Specifically, the side of the track connected to the anchor seat is defined as the back side, and the two side surfaces of the track are provided with anti-hook grooves along its longitudinal direction. The climbing component is provided with an anti-hook portion that is gap-matched with the anti-hook groove, and the anti-hook portion includes a slider whose cross-sectional shape is similar to that of the anti-hook groove, and a connecting arm connecting the end of the slider and the main body of the climbing component; the climbing component and the track are fixed by pin connection; the climbing component includes a climbing frame jacking seat, a cylinder seat connected to the bottom of the climbing frame jacking seat through a jacking cylinder 2134, and a climbing frame guide seat arranged below the cylinder seat.

[0015] One of the connecting arms of the climbing frame lifting seat is provided with a single-pin hydraulic plug-in pin mechanism, and correspondingly, one of the connecting arms of the climbing frame lifting seat is provided with a plug-in pin hole; one of the connecting arms of the cylinder seat is provided with a double-pin hydraulic plug-in pin mechanism, and correspondingly, one of the connecting arms of the cylinder seat is provided with two plug-in pin holes, and the spacing between the two plug-in pin holes of the same connecting arm on the cylinder seat is adapted to the spacing between the plug-in pin holes of the track; one of the connecting arms of the climbing frame guide seat is provided with a plug-in pin hole.

[0016] Preferably, the spacing between the plug pin holes is 300-400 mm.

[0017] Specifically, the front sides of the climbing frame lifting seat and the climbing frame guiding seat are respectively arranged as bolting surfaces.

[0018] Furthermore, an anti-fall shear block is provided on the front side of the track, and correspondingly, an anti-fall locking tongue is provided on the top of the climbing frame jacking seat.

[0019] The lifting system includes a climbing frame bolted to the climbing assembly, a lifting main beam arranged on the top of the climbing frame, a lifting crane arranged above the lifting main beam, and a front support leg supported under the lifting main beam and anchored on the opposite side of the fixed surface of the self-climbing system.

[0020] Among them, a rotating support and a support seat cooperating with the rotating support are provided between the top of the climbing frame and the lifting main beam; the rotating support and the support seat are arranged along the longitudinal direction of the lifting main beam.

[0021] The lifting main beam includes a pair of main longitudinal beams arranged in parallel, and a pair of cross beams orthogonally connected to the two ends of the main longitudinal beams; the bottom surface of the main longitudinal beam is provided with a rotating bearing connection seat, a support seat connection seat and a leveling track in sequence from the climbing frame connection end to the lifting arm end.

[0022] Preferably, the width of the cross beam is greater than the transverse width of the structure to be lifted.

[0023] The lifting trolley includes a moving trolley that transfers the power output by the winch to control the lifting hook, a trolley main beam arranged perpendicular to the main longitudinal beam, and a trolley inclined rod connecting the trolley main beam and the main longitudinal beam; the moving trolley is mounted on the trolley main beam and can be horizontally moved on the trolley main beam through a horizontal movement cylinder.

[0024] The top surface of the main longitudinal beam is provided with an anti-hook track, and correspondingly, the bottom of the overhead crane inclined rod is anti-hooked on the top surface of the main longitudinal beam, and longitudinal movement can be achieved on the main longitudinal beam through a longitudinal movement cylinder.

[0025] The front outrigger comprises a pair of upper outrigger columns respectively hooked on the main longitudinal beam leveling track, a lower outrigger anchoring assembly for connecting the upper outrigger columns to be anchored on the surface of the structure, and an outrigger oil cylinder for driving the front outrigger to translate along the leveling track.

[0026] The following is a method for installing an inclined single-column steel cable tower, which comprises the following steps:

[0027] Distinguish between the inclined upward surface and the inclined downward surface of the inclined single-column cable tower;

[0028] Install a self-elevating lifting formwork on the top of the installed steel tower segment that meets the height requirement, so that the self-elevating lifting formwork extends a lifting arm from the inclined plane;

[0029] Using the self-elevating lifting formwork, the connecting steel tower segment is hoisted from one side of the inclined plane to the top of the installed steel tower segment for installation;

[0030] After the connecting steel tower segment is installed in place, the self-elevating lifting formwork uses its self-climbing system to climb to the next workstation to install the next connecting steel tower segment;

[0031] The connected steel tower segments are installed according to the linear shape of the inclined tower segments, and the lifting frame of the self-elevating lifting formwork is kept horizontal.

[0032] Specifically, the self-elevating lifting formwork adopts a steel tower single-side climbing lifting formwork, which includes a self-climbing system, a lifting system attached to the self-climbing system, and a lifting power system installed on the lifting system;

[0033] The self-climbing system comprises an anchoring seat pre-buried on one side of the structure surface, a track attached to the anchoring seat, and a climbing component hooked on the track;

[0034] The hoisting system is attached to the climbing assembly and extends a hoisting arm to the opposite side of the fixing surface of the self-climbing system;

[0035] The lifting power system includes a hydraulic assembly disposed on the lifting arm to perform lifting and translation processes;

[0036] Wherein, the self-climbing system is installed on the inclined upward surface of the inclined single-column steel cable tower.

[0037] Furthermore, the installation process of the steel tower single-side climbing lifting formwork includes:

[0038] Pre-embed anchor seats on the inclined upward surface of the steel tower segment;

[0039] Installing the self-climbing system on the anchor seat;

[0040] installing a lifting system on the self-climbing system;

[0041] The lifting power system is configured simultaneously with the installation of the lifting system.

[0042] Furthermore, the lifting system includes a climbing frame, a lifting main beam, a lifting crane and a front outrigger, and the installation process of the lifting system includes:

[0043] bolting a climbing frame to the self-climbing system;

[0044] Set up the main lifting beam and front outriggers on the top of the climbing frame;

[0045] Install the lifting crane on the top surface of the lifting main beam.

[0046] While keeping the lifting main beam horizontal, adjust the installation angle between the climbing frame and the lifting main beam, translate the fixed position of the front legs on the bottom surface of the lifting main beam, and adjust the anchoring height of the front legs on the surface of the steel tower segment, so that the lifting main beam remains horizontal under the support of the climbing frame and the front legs.

[0047] Preferably, the steps of disassembling the steel tower single-side climbing lifting formwork include:

[0048] Move the crane along the main crane beam to the top of the climbing frame and secure it;

[0049] Release the anchoring of the front outrigger and the steel tower surface, and move horizontally along the crane main beam to the end of the crane arm for a distance;

[0050] The reverse-driven self-climbing system enables the steel tower single-side climbing lifting formwork to be lowered as a whole to the initial installation position;

[0051] The steel tower single-side climbing lifting formwork is dismantled in the reverse order of installation.

[0052] Preferably, the height of the self-climbing system does not exceed the height of the installed steel tower segments.

[0053] Further preferably, the hoisting process of the connected steel tower segment includes:

[0054] The steel tower segment is transferred and connected to a position directly below the boom;

[0055] Vertically lift the connecting steel tower segment to a preset height above the top of the installed steel tower segment by means of a crane arm;

[0056] Translate the connecting steel tower segment along the longitudinal direction of the boom to above the installed steel tower segment;

[0057] The steel tower segments are connected according to the linear shape of the inclined tower sections.

[0058] In a preferred embodiment, the height of the passage inside the self-elevating lifting formwork for the translation of the connected steel tower segment is greater than the height of the connected steel tower segment.

[0059] Compared with the prior art, this application has the following advantages:

[0060] (1) The lifting formwork of the present application has a small deadweight, its center of gravity is close to the center of gravity of the cable tower, the distance between it and the control point of the lifting segment is small, and it is easy to operate, which is conducive to the linear control of the steel tower;

[0061] (2) The lifting formwork of the present application can use the cable tower itself for self-climbing, without the need for a separate foundation and ground support. At the same time, the height of the lifting formwork is reduced, and the problem of ultra-high lifting is solved. It has strong safety and high construction efficiency.

[0062] (3) The lifting formwork of the present application adopts a single-side climbing design to achieve the adaptability of the climbing system to steel towers with different appearances, and can be applied to vertical steel towers, inclined steel towers and even variable-section steel towers to meet the construction requirements;

[0063] (4) The lifting formwork of the present application adopts a single-side climbing design, which can minimize the interference with other components on the surface of the steel tower, and can simultaneously take into account the construction of hoisting, welding, painting, etc. on the tower column;

[0064] (5) The lifting formwork of the present application uses fewer single-side track embedded parts, which reduces the workload of subsequent removal of embedded parts and repair of steel tower columns;

[0065] (6) The lifting formwork of the present application has only a vertical lifting process and a translation process during lifting. There is no amplitude change during lifting construction, and the lifting process is easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 This is the main view of the single-side climbing lifting formwork of the steel tower in this application.

[0067] Figure 2 This is the left view of the single-side climbing lifting formwork of the steel tower for this application.

[0068] Figure 3 This is the right view of the single-side climbing lifting formwork of the steel tower for this application.

[0069] Figure 4 This is the front view of the self-climbing system of the steel tower single-side climbing lifting formwork of this application.

[0070] Figure 5 This is a structural schematic diagram of the climbing frame jacking seat of the self-climbing system of the steel tower single-side climbing lifting formwork of this application.

[0071] Figure 6 This is a transverse cross-sectional view of the climbing frame top lifting seat of the self-climbing system of the steel tower single-side climbing lifting formwork of this application.

[0072] Figure 7 This is a schematic structural diagram of the cylinder seat of the self-climbing system of the steel tower single-side climbing lifting formwork of this application.

[0073] Figure 8 This is a schematic diagram of the application of the steel tower single-side climbing lifting formwork in the installation of an inclined single-column cable tower. DETAILED DESCRIPTION

[0074] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0075] This application is applied in the antisymmetric steel tower steel box girder cable-stayed bridge project. The steel tower of this project has a wide cross-section at the bottom and a narrow cross-section at the top. Before hoisting, the steel tower is divided into 13 hoisting segments, with a single segment weight of less than 40t and a height of less than 6m. A steel tower single-side climbing lifting formwork with a lifting capacity of 40t is set on the tower column to complete the installation of each tower segment.

[0076] 1. Steel tower single-side climbing lifting formwork

[0077] refer to Figures 1 to 4 The steel tower single-side climbing lifting formwork of the present application comprises a self-climbing system 21, a lifting system attached to the self-climbing system 21, and a lifting power system installed on the lifting system; wherein,

[0078] The self-climbing system 21 includes an anchor seat 211 pre-buried on one side of the structure surface, a track 212 attached to the anchor seat 211, and a climbing component 213 hooked on the track 212;

[0079] The hoisting system is attached to the climbing assembly 213 and extends a hoisting arm 2221a to the opposite side of the fixing surface of the self-climbing system 21;

[0080] The lifting power system includes a power assembly disposed on the lifting arm 2221a for performing lifting and translation processes.

[0081] Furthermore, the lifting system includes a climbing frame 221 bolted to the self-climbing system 21, a lifting main beam 222 arranged on the top of the climbing frame 221, a lifting crane 223 arranged above the lifting main beam 222, and a front support leg 224 supported under the lifting main beam 222 and anchored on the opposite side of the fixed surface of the self-climbing system 21.

[0082] like Figure 1 and Figure 2 As shown, the climbing frame 221 adopts a truss structure, including two first groups of vertical rods directly bolted to the self-climbing system 21, and a second group of vertical rods directly connected to the first group of vertical rods at their lower ends to form an inverted triangle, and also includes a climbing frame diagonal rod group connected to the inverted triangle to expand the top support surface of the climbing frame 221 upward. The top of the climbing frame diagonal rod group constitutes the top angle of the top support surface of the climbing frame 221. The top angle close to the steel tower 1 side is used to set the support seat lower connecting seat 2212, and the side away from the steel tower 1 is used to set the rotating support lower connecting seat 2211. When the whole machine is in the process of climbing, the lifting main beam 222 needs to be kept horizontal, especially when passing through the curvature change point of the steel tower 1 surface. The present application maintains the horizontal state of the lifting main beam 222 by setting a rotating support between the lifting main beam 222 and the climbing frame 221. When the lifting main beam 222 flips at a small angle relative to the top support surface of the climbing frame 221 at the rotating support, the main beam posture is adjusted by adding or removing gaskets on the support seat, that is, the installation angle between the climbing frame 221 and the lifting main beam 222 is adjusted. Preferably, each rod of the climbing frame 221 adopts a box-type structure with different cross-sectional sizes. Considering the transportation restrictions and lifting weight restrictions, the rods used in the climbing frame 221 are designed in modules, and each module component is connected by a flange.

[0083] The lifting main beam 222 includes a pair of parallel main longitudinal beams 2221, and a pair of cross beams 2227 respectively orthogonally connected to the two ends of the main longitudinal beams 2221; the bottom surface of the main longitudinal beam 2221 is provided with a rotating support upper connection seat 2222, a support seat upper connection seat 2223 and a leveling track 2224 in sequence from the climbing frame connection end to the lifting arm end. The rotating support upper connection seat 2222 is bolted to the rotating support lower connection seat 2211 of the climbing frame 221 to form a rotating support. The support seat is formed by setting a gasket between the support seat upper connection seat 2223 and the support seat lower connection seat 2212 of the climbing frame 221 as needed. The rotating support and the support seat are used to limit the installation angle between the lifting main beam 222 and the climbing frame 221. Furthermore, the top surface of the main longitudinal beam 2221 is provided with an anti-hook track 2225 for the crane 223 to move horizontally on the lifting main beam 222. In order to avoid interference with the hoisted object during the hoisting process, the width D4 of the crossbeam 2227 is greater than the lateral width of the hoisted structure. In this embodiment, the width D4 of the crossbeam 2227 needs to be greater than the cross-sectional width of the bottom of the steel tower 1. The lifting main beam 222 is the main force-bearing structure of the steel tower single-side climbing lifting formwork. It is preferred to use a box beam structure with different cross-sectional sizes according to the hoisting force and self-climbing force. The box beam is provided with longitudinal ribs and transverse partitions. Considering the convenience of transportation, the main longitudinal beam 2221 and the crossbeam 2227 are both connected by flanges.

[0084] The hoisting crane 223 includes a moving trolley 2231 for transferring the power outputted by the winch 23 as one of the power components to control the lifting hook 2234, a crane main beam 2232 arranged perpendicular to the main longitudinal beam 2221, and a crane inclined rod 2233 connecting the crane main beam 2232 and the main longitudinal beam 2221. The moving trolley 2231 is mounted on the crane main beam 2232, and the moving trolley 2231 is composed of a fixed pulley block, and the steel wire ropes drawn from the winch 23 at the center of the crane inclined rod 2233 arranged on both sides are respectively passed around the moving trolley 2231, forming a double winch power form, so as to control the lowering and lifting of the lifting hook 2234, and also facilitate the precise positioning of the connected steel tower segment 12 in the process of docking the steel tower segments. Furthermore, the crane main beam 2232 and the crane inclined rod 2233 constitute a gantry structure, and each rod adopts a box beam structure with different cross-sectional sizes. The crane main beam 2232 is provided with a transverse cylinder 2235, and the movable trolley 2231 is driven by the transverse cylinder 2235 to achieve transverse movement on the crane main beam 2232, so as to face the lifting position before the vertical lifting of the steel tower segment. Furthermore, the bottom of the crane inclined rod 2233 is reversely hooked on the reverse hook track 2225 on the top surface of the main longitudinal beam 2221, and the lifting crane 223 is driven by the longitudinal cylinder 2226 to achieve longitudinal movement on the main longitudinal beam 2221 as a whole. In order to ensure the safety of translation, anti-collision seats are provided at the ends of the two main longitudinal beams 2221.

[0085] refer to Figure 1 and Figure 3The front leg 224 includes a pair of leg upper columns 2241 respectively hooked on the leveling rail 2224 of the main longitudinal beam 2221, a leg lower anchoring assembly 2242 for connecting the leg upper columns 2241 to be anchored on the surface of the steel tower 1, and a leg oil cylinder 2243 for driving the front leg 224 to translate along the leveling rail 2224. Specifically, the length of the leveling rail 2224 satisfies the front leg 224 to assist the climbing frame 221 in supporting the lifting main beam 222, which depends on the variation range of the cross-sectional size of the steel cable tower. For example, in this embodiment, the cross-sectional size of the bottom of the steel tower 1 is the largest, and the farthest end of the leveling rail 2224 relative to the climbing frame 221 can meet the installation requirements of the bottom segment of the steel tower 1. The cross-sectional size of the top of the steel tower 1 is the smallest, and the nearest end of the leveling rail 2224 relative to the climbing frame 221 can meet the installation requirements of the top segment of the steel tower 1. The lower end of the front leg 224 needs to be anchored on the surface of the steel tower 1 through the leg anchor seat, and the leg upper column 2241 is transferred to the leg lower support through the leg cross beam. The leg lower support is directly anchored to the surface of the steel tower 1. In a preferred embodiment, a leg lower column is also provided between the leg lower support and the leg cross beam, and the leg lower column can be used to adjust the installation height difference between the leg cross beam and the leg lower support. The leg cross beam, the leg lower support and the leg lower column together constitute the leg lower anchor assembly 2242. In the process of the hoisting system following the self-climbing system 21 to climb the steel tower segment, the fixed connection relationship of the leg lower anchor assembly 2242 on the surface of the steel tower segment needs to be temporarily released. After locking the climbing height, the fixed position of the leg lower anchor assembly 2242 needs to be replaced to the nearest leg anchor seat. Furthermore, a leg cylinder 2243 is provided at the top of the leg upper column 2241, which is used to drive the front leg 224 to translate on the main longitudinal beam 2221 along the leveling track 2224, and then level the main beam 222 in coordination with the installation height of the front leg 224 to cooperate with the support of the climbing frame 221 to maintain the horizontal posture of the lifting main beam 222.

[0086] In summary, the various structural functions of the steel tower single-side climbing lifting formwork of the present application are as follows:

[0087] 1. Climbing frame 221: By pre-installing the climbing track 212 on one side of the steel tower segment, the climbing frame 221 is attached to the track 212 and self-climbs through the lifting and retraction of the cylinder combined with the intermittent locking of the pin shaft;

[0088] 2. Lifting main beam 222: connects various parts, bears the lifting load during lifting and transmits it to the climbing frame 221 and the front outrigger 224;

[0089] 3. Crane 223: The location of the lifting equipment can be moved in four directions by setting a two-way cylinder, which is convenient for lifting and accurate positioning of the segments;

[0090] 4. Front outrigger 224: used to fix the lifting formwork and provide support during segment lifting. The front outrigger 224 releases the support during climbing.

[0091] The structure and function of the self-climbing system 21 are described in detail below.

[0092] 2. Self-climbing system 21 and climbing and descending methods

[0093] refer to Figure 4 The self-climbing system 21 includes an anchor seat 211 embedded in the surface of the structure, a track 212 attached to the anchor seat 211, and a climbing component 213 hooked on the track 212; the climbing component 213 is provided with a reverse hook portion that is clearance-matched with the track 212, and the climbing component 213 and the track 212 are fixed by pin connection.

[0094] The anchor seat 211 is pre-buried in the surface of the structure with a preset vertical spacing D1. Both ends of the track 212 are attached to the anchor seat 211, and the two adjacent tracks 212 are connected end to end and attached to the same anchor seat 211. In this embodiment, a 3m standard track is used, so the vertical spacing D1 of the upper and lower adjacent anchor seats 211 is also about 3m. Furthermore, in order to meet the anchoring requirements of the above-mentioned climbing frame 221, the first group of vertical rods of the climbing frame 221 is attached to a group of self-climbing systems 21, and each group of the self-climbing systems 21 includes 3 or 4 tracks 212 and 2 groups of climbing components 213. The center distance between the tracks 212 of two adjacent groups of self-climbing systems 21 is 1400mm, which is adapted to the spacing of the first group of vertical rods. The two groups of climbing components 213 on each group of self-climbing systems 21 are of redundant design. When the self-climbing system 21 is operating normally, only the upper group of climbing components 213 is used, and the lower group of climbing components 213 is activated when the upper group of climbing components 213 is disabled, or to achieve braking to prevent falling when the lifting formwork becomes unstable and falls.

[0095] Further, refer to Figures 4 to 6 The side of the track 212 connected to the anchor seat 211 is defined as the back side, and the back side of the track 212 is provided with a load-bearing shear block 2121 that abuts against the anchor seat 211. In the track 212 attached to the same anchor seat 211, the load-bearing shear block 2121 of the upper track 212 abuts against the top of the anchor seat 211, and the load-bearing shear block 2121 of the lower track 212 abuts against the inside of the anchor seat 211, that is, the same track 212 is provided with load-bearing shear blocks 2121 at its upper end and lower end respectively.

[0096] The front of the track 212 is provided with an anti-falling shear block 2124, and correspondingly, one of the climbing components 213 is provided with an anti-falling lock tongue 21312. The anti-falling shear blocks 2124 are arranged on the front of the track 212 at a spacing of 300 mm. If rapid braking is required, the spacing of the anti-falling shear blocks 2124 should be appropriately reduced. The anti-falling lock tongue 21312 is bolted to the climbing component 213, and its braking principle is: during the climbing of the lifting formwork, the front end of the anti-falling lock tongue 21312 is pushed by the lower convex surface of the anti-falling shear block 2124, and the front end of the anti-falling lock tongue 21312 is deflected downward and away from the anti-falling shear block 2124. At this time, there is no mutually conflicting locking relationship between the anti-falling lock tongue 21312 and the anti-falling shear block 2124, and the climbing of the lifting formwork is not affected; during the descent of the lifting formwork, the front end of the anti-falling lock tongue 21312 is reset and then stuck in the two upper and lower adjacent anti-falling lock tongues. When the lifting formwork continues to descend, the front end of the anti-falling lock tongue 21312 abuts against the upper convex surface of the anti-falling shear block 2124. Since the rear end of the anti-falling lock tongue 21312 is limited and cannot continue to rotate, at this time, the anti-falling lock tongue 21312 and the anti-falling shear block 2124 are in a mutually conflicting locking relationship, and the descent of the lifting formwork is stopped, thereby achieving the anti-falling effect; if the lifting formwork needs to descend normally without being affected by the anti-falling lock tongue 21312, the front end of the anti-falling lock tongue 21312 needs to be manually deflected downward and locked.

[0097] The two sides of the track 212 are provided with anti-hook grooves 2122 along the longitudinal direction thereof, the groove bottom 2122a of the anti-hook groove 2122 is parallel to the longitudinal direction, the first groove wall 2122b of the anti-hook groove 2122 close to the front side of the track 212 is perpendicular to the groove bottom 2122a, and the second groove wall 2122c close to the back side of the track 212 is obliquely intersected with the groove bottom 2122a so that the cross-sectional width of the groove bottom 2122a of the anti-hook groove 2122 is smaller than the cross-sectional width of the groove opening. Figure 6As shown, the cross section of the reverse hook groove 2122 is a right-angled trapezoid, with a large opening and a small groove bottom 2122a. The reverse hook portion of the climbing component 213 that is clearance-matched with the reverse hook groove 2122 includes a slider 213c whose cross-sectional shape is similar to that of the reverse hook groove 2122, and a connecting arm 213b that connects the end of the slider 213c with the main body 213a of the climbing component 213. The so-called clearance fit means that the shapes of the slider 213c and the reverse hook groove 2122 are basically similar, but there is a gap between the two after they are fitted together. As shown in this embodiment, the cross-sectional shape of the reverse hook groove 2122 is a right-angled trapezoid, and the cross-sectional shape of the slider 213c is also a right-angled trapezoid. Another possible implementation method is that the cross-sectional shape of the slider 213c is a triangle, a trumpet, a rectangle, etc. The clearance fit method can allow an offset distance between the track 212 and the slider 213c, and allow an angle difference between the upper and lower adjacent tracks 212 without affecting the safe climbing and descending of the lifting formwork.

[0098] Furthermore, a plug-in pin hole 2123 is provided between the anti-hook groove 2122 and the front face of the track 212 perpendicular to the longitudinal direction and passing through the two side faces of the track 212; the spacing D2 of the plug-in pin holes 2123 is 300~400mm, and correspondingly, the single moving stroke of the self-climbing system 21 is an integer multiple of the spacing D2 of the plug-in pin holes 2123.

[0099] The climbing assembly 213 includes a climbing frame lifting seat 2131, a cylinder seat 2132 connected to the lower part of the climbing frame lifting seat 2131 through a lifting cylinder 2134, and a climbing frame guide seat arranged under the cylinder seat 2132. Each component of the climbing assembly 213 includes a body, a connecting arm extending from the body, and the slider 213c arranged at the end of the connecting arm, and the connecting arm and the slider 213c constitute the reverse hook portion.

[0100] Specifically, refer to Figures 4 to 6The climbing frame lifting seat 2131 includes a lifting seat body, a reverse hook portion composed of a connecting arm and a slider, and a single-pin shaft hydraulic plug-in pin mechanism 21311 provided on one of the connecting arms. Correspondingly, one connecting arm of the climbing frame lifting seat 2131 is provided with a plug-in pin hole, which is adapted to the plug-in pin hole 2123 of the track 212, that is, the inner diameters of the two are similar and can be connected to each other. The single-pin shaft hydraulic plug-in pin structure includes a single pin shaft, a hydraulic push-pull device provided at the exposed end of the pin shaft, and a limit frame fixed on the connecting arm. The limit frame provides an attachment site for the single pin shaft in a decoupled state, and also provides a fixing place for the hydraulic push-pull device, while limiting the translation trajectory of the single pin shaft. When the single pin is pushed and inserted into the plug-in pin hole on the connecting arm and the plug-in pin hole 2123 on the track 212, the connection between the climbing frame lifting seat 2131 and the track 212 is realized, and at this time, the climbing frame lifting seat 2131 cannot move longitudinally along the track 212; when the single pin is pulled out of the plug-in pin hole, the connection between the climbing frame lifting seat 2131 and the track 212 is realized, and at this time, the climbing frame lifting seat 2131 can move longitudinally along the track 212. Preferably, the anti-fall lock tongue 21312 is bolted to the top of the climbing frame lifting seat 2131. Furthermore, the bottom of the climbing frame lifting seat 2131 is provided with a connecting ear bolted to the lifting cylinder 2134.

[0101] refer to Figure 4 and Figure 7The cylinder seat 2132 includes a cylinder seat body, a reverse hook portion consisting of a connecting arm and a slider, and a double-pin hydraulic plug-in pin mechanism 21321 provided on one of the connecting arms. Correspondingly, one connecting arm of the cylinder seat 2132 is provided with two plug-in pin holes. The spacing between the two plug-in pin holes of the same connecting arm on the cylinder seat 2132 is adapted to the spacing between the plug-in pin holes 2123 of the track 212. The plug-in pin holes of the two also have similar inner diameters and can be interconnected. The double-pin hydraulic plug-in pin structure includes two upper and lower parallel pin shaft groups, a hydraulic push-pull device provided at the exposed end of the pin shaft group, and a limit frame fixed on the connecting arm. The limit frame provides an attachment site for the pin shaft group in a decoupled state, and also provides a fixing place for the hydraulic push-pull device, while limiting the translation trajectory of the pin shaft group. When the pin assembly is pushed and inserted into the plug-in pin holes on the connecting arm and the plug-in pin holes 21232123 on the track 212, the connection between the cylinder seat 2132 and the track 212 is realized, and at this time, the cylinder seat 2132 cannot move longitudinally along the track 212; when the pin assembly is pulled out of the plug-in pin holes, the connection between the cylinder seat 2132 and the track 212 is realized, and at this time, the cylinder seat 2132 can move longitudinally along the track 212. The top of the cylinder seat 2132 is provided with a connecting ear bolted to the jacking cylinder 2134. The cylinder seat 2132 is more firmly connected to the track 212 through the pin assembly, providing a more stable boost reaction force for the climbing of the lifting formwork.

[0102] refer to Figure 4 The climbing frame guide seat includes a guide seat body, a reverse hook portion consisting of a connecting arm and a slider, and one of the connecting arms is provided with a plug-in pin hole, which is adapted to the plug-in pin hole 2123 of the track 212. The thickness of the climbing frame guide seat relative to the anchor seat 211 is similar to the thickness of the climbing frame lifting seat 2131 relative to the anchor seat 211, and the thickness of the cylinder seat 2132 relative to the anchor seat 211 is smaller. The front faces of the climbing frame guide seat and the climbing frame lifting seat 2131 are respectively set as bolting surfaces, and both are bolted to the climbing frame 221 at the same time to cooperate with supporting the climbing frame 221 and avoid interference between the climbing frame 221 and the cylinder seat 2132, resulting in the climbing of the cylinder seat 2132 being hindered.

[0103] Preferably, in order to improve the application flexibility of the self-climbing system 21, the inner diameter of the plug-in pin hole 2123 is 0.5-1 mm larger than the outer diameter of the single pin shaft and the pin shaft group.

[0104] The process of the self-climbing system 21 driving the entire formwork to climb is as follows:

[0105] 1) Initial state: the cylinder seat 2132 is connected to the track 212, and the climbing frame lifting seat 2131 is disconnected from the track 212;

[0106] 2) The piston rod of the lifting cylinder 2134 is lifted by a stroke of 600 mm, and the climbing frame 221 is moved up by 600 mm. The stroke is approximately twice the spacing of the plug-in pin holes 2123;

[0107] 3) The climbing frame lifting seat 2131 is connected to the track 212, and the cylinder seat 2132 is disconnected from the track 212;

[0108] 4) The piston rod of the lifting cylinder 2134 retracts a stroke of 600 mm, and the cylinder seat 2132 moves up 600 mm.

[0109] 5) The cylinder seat 2132 is connected to the track 212, and the climbing frame lifting seat 2131 is disconnected from the track 212 to prepare for the next lifting stroke.

[0110] After the lifting formwork is completed, the self-climbing system 21 is used to move the whole machine downward until it returns to the bottom of the tower. The downward steps are as follows:

[0111] 1) Move the crane 223 system to the side of the climbing frame 221 and secure it;

[0112] 2) Release the anchor connection between the front leg 224 and the steel tower 1, slide the front leg 224 toward the end of the boom for a distance to avoid interference between the leg crossbeam and the steel tower 1 during the descent, and then lock it;

[0113] 3) Connect the oil cylinder seat 2132 with the track 212, and disconnect the climbing frame lifting seat 2131 with the track 212;

[0114] 4) The piston rod of the lifting cylinder 2134 retracts a stroke of 600 mm, and the climbing frame 221 moves downward 600 mm;

[0115] 5) The climbing frame lifting seat 2131 is connected to the track 212, and the cylinder seat 2132 is disconnected from the track 212;

[0116] 6) The piston rod of the lifting cylinder 2134 is raised by a stroke of 600 mm, and the climbing frame 221 is moved down by 600 mm.

[0117] 7) Connect the oil cylinder seat 2132 with the track 212, and disconnect the climbing frame lifting seat 2131 from the track 212 to prepare for the next downward stroke;

[0118] 8) Repeat the cycle 10 times, descending a total of 6 meters to the next section;

[0119] 9) Release the constraint of the crane 223 on the side of the climbing frame 221, move it to the top of the track 212, remove the track 212 at the top by using the crane 223, lift it, and move it down to the end of the track 212 for installation and connection;

[0120] 10) The crane 223 moves to the side of the climbing frame 221 again and locks it. Repeat steps (3) to (9) until the crane descends to the initial installation position;

[0121] 11) Use other cranes to dismantle the self-climbing crane in the reverse order of installation.

[0122] The steel tower single-side climbing lifting formwork including the self-climbing system 21 uses hydraulic equipment in multiple locations, and each hydraulic equipment can be uniformly controlled by an electrical system.

[0123] The hydraulic system used in this application is an open system, that is, after the hydraulic pump sucks hydraulic oil from the oil tank, it outputs it to each actuator, and the return oil of each actuator directly returns to the oil tank. It has a simple structure and good heat dissipation and oil filtering conditions.

[0124] The hydraulic system of the lifting formwork is responsible for the lifting and climbing of the whole machine, the longitudinal movement of the crane 223, the lateral movement of the lifting point of the crane 223, the movement of the oil cylinder of the front leg 224, and the movement of the plug-in and pull-out mechanism of the whole equipment. The hydraulic station is installed on the middle working platform of the climbing frame 221 to provide pressure oil for each oil cylinder.

[0125] The electrical system includes three major systems: the electrical control system of the whole machine structure, the safety monitoring system and the remote video monitoring system.

[0126] The electrical control system of the whole machine: The control object is the working mechanism of the whole machine, including the power control system and the lifting and lowering of the climbing frame 221, the longitudinal and transverse movement of the hoisting crane 223, etc. It has high safety, reliability and complete functions to prevent misoperation, and can meet the requirements of large-scale stable speed regulation of the lifting mold frame, and can also meet the high-precision synchronous control of the lifting process of the climbing frame 221. The control part of the system is implemented by Siemens programmable controller, which has the characteristics of advanced control, high reliability, and convenient programming and modification. PLC is the core of the entire speed regulation system, responsible for the logical control of all input and output control points of the system. PLC is powered by AC220V. PLC is mainly used to receive the main command signal, send control signals of each mechanism, and control the action of each mechanism.

[0127] Safety monitoring system: In addition to the lifting weight limiter and the sensors, limit switches and detection switches installed in the aforementioned mechanisms, the system is also equipped with a wind speed sensor (which can send out audible and visual alarm signals when the ambient wind speed exceeds the limit and restrict the operation of each mechanism), a stress monitoring device (stress sensors are installed at each monitoring point of the whole machine, which automatically restrict the operation of each mechanism and send out an alarm signal when abnormal stress occurs).

[0128] The host of the safety monitoring system is installed in the crane operation room and is connected to the main controller on the machine through a communication bus to collect, display and record the real-time status of each mechanism, sensor and safety protection device of the whole machine.

[0129] The security monitoring host uploads the operating data to the cloud through the wireless communication module, and can be queried in real time through the Internet.

[0130] The crane is also equipped with a video monitoring system, and the cameras respectively capture real-time images of monitoring points such as the winch 23, the crane 223, the front outrigger 224, the crane hook 2234, and the self-climbing system 21. The host (hard disk video recorder) and the monitor are installed in the operation room.

[0131] Further, the installation steps of the steel tower single-side climbing lifting formwork of the present application are as follows:

[0132] 1) First, use other cranes to complete the installation of the segments at the bottom of the tower, and then install the lifting formwork; the track anchor seat 211 and the leg anchor seat are manufactured together with the steel tower 1;

[0133] 2) Install the self-climbing system 21. Install the track 212, the climbing frame guide seat, the cylinder support, and the climbing frame lifting seat 2131 in sequence, and connect them with pins, and hoist them as a whole to the anchor seat 211 by a crane;

[0134] 3) Install the climbing frame 221 and the lower connecting seat of the hinged support and the lower connecting seat 2212 of the support seat.

[0135] 4) Install the lifting main beam 222 and the front legs 224, and connect and tighten the front legs 224 to the corresponding leg anchor seats.

[0136] 5) Lift the lifting crane 223 to the top surface of the lifting main beam 222.

[0137] 6) The lifting power system, namely the above-mentioned winch 23, various hydraulic equipment and electrical systems are configured simultaneously with the installation of the lifting system.

[0138] 3. Installation method of inclined single-column cable tower

[0139] When using the steel tower single-side climbing lifting formwork of the present application to install the inclined cable tower in the anti-symmetric steel tower steel box girder cable-stayed bridge project, the following steps are adopted:

[0140] (1) Distinguish the inclined upward surface 1a and the inclined downward surface 1b of the inclined single-column cable tower;

[0141] The inclined upward surface 1a refers to a side surface of the inclined steel tower 1 that forms the largest angle with the ground; the inclined downward surface 1b refers to a side surface of the inclined steel tower 1 that forms the smallest angle with the ground. Usually, the opposite side of the inclined upward surface 1a is the inclined downward surface 1b. The projection surface of the inclined steel tower 1 on the ground is larger than the cross section of the bottom of the steel tower 1.

[0142] (2) installing a self-elevating lifting formwork on the top of the installed steel tower segment 11 that meets the height requirement, so that the self-elevating lifting formwork extends a lifting arm 2221a from the inclined plane 1b;

[0143] The self-elevating lifting formwork adopts the steel tower single-side climbing lifting formwork of the present application, and the steel tower single-side climbing lifting formwork is fixed on the top of the installed steel tower segment 11 using the installation steps described above. The installed steel tower segment 11 is pre-connected on the ground by a crane, and the height of the installed steel tower segment 11 needs to meet the installation requirements of the track 212 of the self-climbing system 21, that is, the height of the installed steel tower segment 11 is greater than the total length H of the track 212 constituting the self-climbing system 21. Specifically, the total length H of the track 212 in this example is in the range of 9 to 12 m. Further, as Figure 8 As shown, the track 212 is installed on the inclined face 1a of the inclined steel tower, and correspondingly, a jib 2221a extends from the side of the inclined face 1b, and the lower part of the jib 2221a will serve as the lifting position for the subsequent steel tower segment 12. If the inclined steel tower is inclined in the transverse direction of the bridge, its inclined face 1a and inclined face 1b are located in the transverse direction of the bridge; if the inclined steel tower is inclined in the longitudinal direction of the bridge, the other inclined face 1a and inclined face 1b are located in the longitudinal direction of the bridge; if the inclined direction of the inclined steel tower is neither parallel nor perpendicular to the bridge main beam, its inclined face 1a and inclined face 1b are on the axis of the steel tower itself.

[0144] (3) using the self-elevating lifting formwork to hoist the connecting steel tower segment 12 from one side of the inclined plane 1b to the top of the installed steel tower segment 11 for installation;

[0145] One side of the inclined plane 1b serves as the lifting position for the connected steel tower segment 12. If the lifting position is on land and the ground foundation meets the requirements, a car can be used to transport the connected steel tower segment 12 to the bottom of the boom 2221a. If the lifting position is on a river or on land with poor ground foundation, a transfer platform can be set up or a construction trestle can be extended to the lifting position. If the river conditions are good, a barge can be used to provide a lifting platform.

[0146] Specifically, the hoisting process of the connected steel tower segment 12 is as follows:

[0147] The steel tower segment 12 is transported and connected to a position directly below the lifting arm 2221a;

[0148] The connected steel tower segment 12 is vertically lifted by the crane arm 2221a to a preset height above the top of the installed steel tower segment 11; specifically, the lifting trolley 223 is longitudinally moved to the end of the crane arm, and then the lateral position of the moving trolley 2231 of the crane 223 is adjusted to face the connected steel tower segment 12, and then the lifting hook 2234 is lowered. After the lifting hook 2234 is connected to the lifting point of the connected steel tower segment 12, the connected steel tower segment 12 is lifted by the lifting power system. For the subsequent docking work, the connecting steel tower segment 12 is first lifted to a height slightly higher than the top of the installed steel tower segment 11. Therefore, the height of the channel inside the self-elevating lifting formwork for the translation of the connecting steel tower segment 12 is greater than the height of the connecting steel tower segment 12. The channel for the translation of the connecting steel tower segment 12 is defined by the lifting main beam 222, the front support leg 224, the lifting trolley 223 and the top surface of the installed steel tower segment 11. The height of the channel refers to the vertical distance from the top surface of the installed steel tower segment 11 to the moving trolley 2231 of the lifting trolley 223. The height of the channel is sufficient to accommodate the working height of a connecting steel tower segment 12 and a lifting hook 2234.

[0149] The connecting steel tower segment 12 is translated along the longitudinal direction of the lifting arm 2221a to above the installed steel tower segment 11; the connecting steel tower segment 12 reaches above the installed steel tower segment 11 along the translation channel.

[0150] The connected steel tower segment 12 is docked according to the linear shape of the inclined tower section; the moving trolley 2231 is precisely adjusted by the two winches 23 of the lifting crane 223, so that the connected steel tower segment 12 can be dropped and welded at the preset docking position to complete the installation process of a connected steel tower segment 12.

[0151] (4) After the subsequent steel tower segment 12 is installed in place, the self-elevating lifting formwork uses its self-climbing system 21 to climb to the next workstation to install the next subsequent steel tower segment 12; refer to the climbing method of the self-climbing system 21 described above, drive the self-elevating lifting formwork to climb along the steel tower 1, and repeat step (3) until the lifting and docking of all subsequent steel tower segments 12 are completed.

[0152] (5) The connecting steel tower segment 12 is installed according to the linear shape of the inclined tower segment, and the lifting frame of the self-elevating lifting formwork is kept horizontal;

[0153] While keeping the lifting main beam 222 horizontal, adjust the installation angle between the climbing frame 221 and the lifting main beam 222, translate the fixed position of the front legs 224 on the bottom surface of the lifting main beam 222, and adjust the anchoring height of the front legs 224 on the surface of the steel tower segment, so that the lifting main beam 222 is kept horizontal under the support of the climbing frame 221 and the front legs 224. Specifically, the installation angle between the climbing frame 221 and the lifting main beam 222 is adjusted by increasing or decreasing the number of gaskets of the support seat. Furthermore, under the hanging beam construction condition, the position of the front legs 224 on the lifting main beam 222 is adjusted by the leg cylinder 2243 on the bottom surface of the lifting main beam 222, and then the lower end of the front legs 224 is connected to the surface of the steel tower 1 by pin connection, and finally the overall height of the front legs 224 is adjusted to level the lifting main beam 222.

[0154] (6) After the steel tower 1 is installed, refer to the descending method of the self-climbing system 21 described above, and drive the self-elevating lifting formwork to descend along the steel tower 1 to the initial installation position, so as to facilitate the removal of the lifting formwork;

[0155] (7) During the process of lowering and dismantling the lifting formwork, the surface grinding, painting, and other operations of the steel tower 1 are completed in the area where the lifting formwork is evacuated.

[0156] To sum up, the steel tower single-sided climbing lifting formwork of the present application is applied to the inclined single-column steel cable tower. The lifting formwork can use the cable tower itself for self-climbing, does not require a separate foundation and ground support, and at the same time reduces the height of the lifting formwork, solves the problem of ultra-high lifting, has strong safety and high construction efficiency.

[0157] The above embodiments are preferred implementation modes of the present application, but are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present application should be equivalent replacement methods and are included in the protection scope of the present application.

Claims

1. A steel tower single-side climbing lifting formwork, characterized in that: It includes a self-climbing system, a lifting system attached to the self-climbing system, and a lifting power system installed on the lifting system; wherein, The self-climbing system comprises an anchoring seat pre-buried on one side of the structure surface, a track attached to the anchoring seat, and a climbing component hooked on the track; both ends of the track are attached to the anchoring seat, and two adjacent tracks are connected end to end and attached to the same anchoring seat; The hoisting system is attached to the climbing assembly, and a hoisting arm is extended to the opposite side of the fixed surface of the self-climbing system; the hoisting system includes a climbing frame bolted to the climbing assembly, a hoisting main beam arranged on the top of the climbing frame, a hoisting crane arranged above the hoisting main beam, and a front leg supported below the hoisting main beam and anchored on the opposite side of the fixed surface of the self-climbing system; the hoisting main beam includes a pair of parallel main longitudinal beams, and a pair of cross beams orthogonally connected to the two ends of the main longitudinal beams; the bottom surface of the main longitudinal beam is sequentially provided with a rotating support connection seat, a support seat connection seat and a leveling track from the climbing frame connection end to the hoisting arm end; The lifting power system includes a power assembly arranged on the lifting arm to perform lifting and translation processes.

2. The lifting formwork according to claim 1, characterized in that: The self-climbing system comprises at least three of the tracks and two sets of climbing components.

3. The lifting formwork according to claim 1, characterized in that: The side of the track connected to the anchor seat is defined as the back side, and the two side surfaces of the track are provided with anti-hook grooves along its longitudinal direction. The climbing component is provided with an anti-hook portion that is gap-matched with the anti-hook groove, and the anti-hook portion includes a slider whose cross-sectional shape is similar to that of the anti-hook groove, and a connecting arm connecting the end of the slider and the main body of the climbing component; the climbing component and the track are fixed by pin connection; the climbing component includes a climbing frame jacking seat, a cylinder seat connected to the bottom of the climbing frame jacking seat through a jacking cylinder 2134, and a climbing frame guide seat arranged below the cylinder seat.

4. The lifting formwork according to claim 3, characterized in that: One of the connecting arms of the climbing frame lifting seat is provided with a single-pin hydraulic plug-in pin mechanism, and correspondingly, one of the connecting arms of the climbing frame lifting seat is provided with a plug-in pin hole; one of the connecting arms of the cylinder seat is provided with a double-pin hydraulic plug-in pin mechanism, and correspondingly, one of the connecting arms of the cylinder seat is provided with two plug-in pin holes, and the spacing between the two plug-in pin holes of the same connecting arm on the cylinder seat is adapted to the spacing between the plug-in pin holes of the track; one of the connecting arms of the climbing frame guide seat is provided with a plug-in pin hole.

5. The lifting formwork according to claim 4, characterized in that: The spacing between the plug-in pin holes is 300-400 mm.

6. The lifting formwork according to claim 3, characterized in that: The front sides of the climbing frame lifting seat and the climbing frame guiding seat are respectively arranged as bolting surfaces.

7. The lifting formwork according to claim 3, characterized in that: An anti-fall shear block is provided on the front side of the track, and correspondingly, an anti-fall locking tongue is provided on the top of the climbing frame jacking seat.

8. The lifting formwork according to claim 1, characterized in that: A rotating support and a support seat matched with the rotating support are arranged between the top of the climbing frame and the lifting main beam; the rotating support and the support seat are arranged along the longitudinal direction of the lifting main beam.

9. The lifting formwork according to claim 1, characterized in that: The width of the crossbeam is greater than the transverse width of the structure being hoisted.

10. The lifting formwork according to claim 1, characterized in that: The lifting trolley includes a moving trolley that transfers the power output by the winch to control the lifting hook, a trolley main beam arranged perpendicular to the main longitudinal beam, and a trolley inclined rod connecting the trolley main beam and the main longitudinal beam; the moving trolley is mounted on the trolley main beam and can be horizontally moved on the trolley main beam through a horizontal movement cylinder.

11. The lifting formwork according to claim 10, characterized in that: The top surface of the main longitudinal beam is provided with an anti-hook track, and correspondingly, the bottom of the overhead crane inclined rod is anti-hooked on the top surface of the main longitudinal beam, and longitudinal movement can be achieved on the main longitudinal beam through a longitudinal movement cylinder.

12. The lifting formwork according to claim 1, characterized in that: The front outrigger comprises a pair of upper outrigger columns respectively hooked on the main longitudinal beam leveling track, a lower outrigger anchoring assembly for connecting the upper outrigger columns to be anchored on the surface of the structure, and an outrigger oil cylinder for driving the front outrigger to translate along the leveling track.

13. A method for installing an inclined single-column steel cable tower, characterized in that: It includes the following steps: Distinguish between the inclined upward surface and the inclined downward surface of the inclined single-column cable tower; Install a self-elevating lifting formwork on the top of the installed steel tower segment that meets the height requirement, so that the self-elevating lifting formwork extends a lifting arm from the inclined plane; Using the self-elevating lifting formwork, the connecting steel tower segment is hoisted from one side of the inclined plane to the top of the installed steel tower segment for installation; After the connecting steel tower segment is installed in place, the self-elevating lifting formwork uses its self-climbing system to climb to the next workstation to install the next connecting steel tower segment; The connecting steel tower segments are installed according to the linear shape of the inclined tower segments, and the lifting frame of the self-elevating lifting formwork is kept horizontal; The self-elevating lifting formwork adopts the steel tower single-side climbing lifting formwork as described in any one of claims 1 to 12.

14. The installation method according to claim 13, characterized in that: The self-elevating lifting formwork adopts a steel tower single-side climbing lifting formwork, which includes a self-climbing system, a lifting system attached to the self-climbing system, and a lifting power system installed on the lifting system; The self-climbing system comprises an anchoring seat pre-buried on one side of the structure surface, a track attached to the anchoring seat, and a climbing component hooked on the track; The hoisting system is attached to the climbing assembly and extends a hoisting arm to the opposite side of the fixing surface of the self-climbing system; The lifting power system includes a hydraulic assembly disposed on the lifting arm to perform lifting and translation processes; Wherein, the self-climbing system is installed on the inclined upward surface of the inclined single-column steel cable tower.

15. The installation method according to claim 14, characterized in that: The installation process of the steel tower single-side climbing lifting formwork includes: Pre-embed anchor seats on the inclined upward surface of the steel tower segment; Installing the self-climbing system on the anchor seat; installing a lifting system on the self-climbing system; The lifting power system is configured simultaneously with the installation of the lifting system.

16. The installation method according to claim 15, characterized in that: The lifting system includes a climbing frame, a lifting main beam, a lifting crane and a front outrigger. The installation process of the lifting system includes: bolting a climbing frame to the self-climbing system; Set up the main lifting beam and front outriggers on the top of the climbing frame; Install the lifting crane on the top surface of the lifting main beam.

17. The installation method according to claim 16, characterized in that: While keeping the lifting main beam horizontal, adjust the installation angle between the climbing frame and the lifting main beam, translate the fixed position of the front support legs on the bottom surface of the lifting main beam, and adjust the anchoring height of the front support legs on the surface of the steel tower segment, so that the lifting main beam remains horizontal under the support of the climbing frame and the front support legs.

18. The installation method according to claim 16, characterized in that: The disassembly steps of the steel tower single-side climbing lifting formwork include: Move the crane along the main crane beam to the top of the climbing frame and secure it; Release the anchoring of the front outrigger and the steel tower surface, and move horizontally along the crane main beam to the end of the crane arm for a distance; The reverse-driven self-climbing system enables the steel tower single-side climbing lifting formwork to be lowered as a whole to the initial installation position; The steel tower single-side climbing lifting formwork is dismantled in the reverse order of installation.

19. The installation method according to claim 15, characterized in that: The height of the self-climbing system does not exceed the height of the installed steel tower segments.

20. The installation method according to claim 13, characterized in that: The hoisting process of the connected steel tower segment includes: The steel tower segment is transferred and connected to a position directly below the boom; Vertically lift the connecting steel tower segment to a preset height above the top of the installed steel tower segment by means of a crane arm; Translate the connecting steel tower segment along the longitudinal direction of the boom to above the installed steel tower segment; The steel tower segments are connected according to the linear shape of the inclined tower sections.

21. The installation method according to claim 20, characterized in that: The height of the passage inside the self-elevating lifting formwork for the translation of the connected steel tower segment is greater than the height of the connected steel tower segment.

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