Four-hundred-ton non-symmetrical steel tower segment sliding system and sliding method

Abstract

The application provides a four-hundred-ton asymmetric steel tower segment sliding system, which comprises a steel pipe pile arranged near a shore edge, at least four track beams arranged at the upper end of the steel pipe pile, one end of the track beam being used for being close to a transport ship, the other end of the track beam being used for being close to a bridge tower construction area, at least two slidable sliding brackets being arranged on the track beam, a support tool frame for supporting a steel tower segment being arranged on the sliding bracket, a continuous jack being arranged at the end of each track beam close to the bridge tower construction area, a traction cable being further arranged, one end of the traction cable being connected with the continuous jack, the other end of the traction cable being used for pulling the support tool frame, at least two racks being further arranged, the racks being connected with the track beams, a walking motor being arranged on each sliding bracket, a gear being arranged at the shaft end of the walking motor, the gear being engaged with the rack, the support tool frame being separable from the sliding bracket, and the problem of long transfer period of a large-weight steel bridge tower segment is solved.

Description

Technical Field

[0001] This invention relates to the field of steel tower segment sliding construction, and in particular to a 400-ton asymmetric steel tower segment sliding system and sliding method. Background Technology

[0002] Since the beginning of the 21st century, the height of main towers for large-scale road-rail bridges has gradually increased to 360 meters, and with the development and use of tower cranes with a capacity of trillions of ton-meters, the advantages of steel cable towers have become increasingly apparent, leading to their wider application. Compared to conventional concrete cable towers, which are slow to construct and have long construction cycles, steel towers are easier to construct, greatly reducing the cumbersome construction procedures of concrete towers and significantly accelerating project construction cycles.

[0003] With the rapid development of dual-purpose road-rail bridges, the height and weight of steel tower segments have been continuously increasing, and the steel tower structure has become increasingly complex. Transport ships and floating cranes often cannot transport the segments to the bridge tower in one go, and conventional methods of hoisting and transferring steel tower segments are no longer applicable. The main problems are as follows: First, the maximum weight of the steel tower segment is 401t, which places extremely high demands on the tonnage of the transport ship and floating crane, as well as the draft of the equipment. It cannot be lifted to the designated position at the bottom of the bridge tower in one go. Conventional water-based sliding platforms and sliding equipment cannot meet the sliding requirements of a 400-ton steel tower, making the structural design of the sliding platform extremely difficult.

[0004] Secondly, the first section of the steel tower is 6.6m high and has an asymmetrical spatial structure. The lower 3m of the first section is a hollow shell, with the weight mainly concentrated in the upper 3.6m. Furthermore, the main tower leans to the right, with the weight concentrated in the upper right. The steel tower structure is extremely complex, greatly increasing the difficulty of sliding, and the hollow shell structure at the bottom 3m makes it difficult to guarantee the safety and stability of the sliding operation.

[0005] Third, the various processes of traction start, slippage, mid-journey braking, and traction stop, coupled with the high wind speed along the riverbank, pose significant safety risks to the slippage of the 400-ton asymmetric structure. Summary of the Invention

[0006] This invention provides a sliding system and method for 400-ton asymmetric steel tower segments, which solves the problem that heavy steel bridge tower segments cannot be directly hoisted ashore by floating cranes.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a 400-ton asymmetric steel tower segment sliding system, including steel pipe piles set near the shore, at least four track beams at the upper end of the steel pipe piles, one end of the track beams being used to approach the transport ship, and the other end of the track beams being used to approach the bridge tower construction area, at least two sliding brackets on the track beams, and support fixtures for supporting the steel tower segments on the sliding brackets, a continuous jack on the end of each track beam near the bridge tower construction area, and a traction cable, one end of which is connected to the continuous jack, and the other end of which is used to pull the support fixtures, and at least two racks connected to the track beams, each sliding bracket being equipped with a traveling motor, and a gear on the shaft end of the traveling motor, the gear meshing with the rack, the support fixtures being separable from the sliding brackets.

[0008] In the preferred embodiment, a reaction seat is provided at the end of the track beam, one end of the continuous jack rests against the reaction seat, the traction cable passes through the reaction seat, and one end of the traction cable is provided with an anchor, which is connected to the sliding bracket.

[0009] In the preferred embodiment, the support fixture includes an internal support frame and an external support frame. The internal support frame and the external support frame are provided with connected vertical support columns and horizontal horizontal connecting rods. Each vertical support column is provided with a conforming flange plate at its upper end, and the conforming flange plate is connected to the outer wall of the steel tower segment.

[0010] In the preferred embodiment, the support fixture is provided with a positioning hole, and the sliding bracket is provided with a locking device. The positioning hole and the locking device are fitted together for positioning. The inner wall of the positioning hole is provided with a conical positioning ring, and the locking device is provided with an extendable abutment shaft, one end of which abuts against the conical positioning ring.

[0011] In a preferred embodiment, the locking device includes a seat, inside which is a rotatable lead screw, on which a threaded sleeve is fitted. The sleeve is slidably connected to the inner wall of the seat, and the sleeve has a third conical surface. The seat has multiple guide cylinders along its circumference, and an abutment shaft is slidably fitted with the guide cylinders. The abutment shaft has a first conical surface and a second conical surface at both ends, with the second conical surface abutting against the third conical surface. The first conical surface abuts against the conical positioning ring.

[0012] In the preferred embodiment, the abutment shaft is provided with a shoulder, a return spring is sleeved on the outside of the abutment shaft, and a stop cap is provided at the end of the guide cylinder. The two ends of the return spring abut against the stop cap and the shoulder respectively.

[0013] In a preferred embodiment, a worm gear is provided at the end of the lead screw, and a first connecting shaft is provided on the sliding bracket. Multiple worms are sleeved on the first connecting shaft, and each worm meshes with a worm gear. A second connecting shaft is also provided perpendicular to the first connecting shaft. The second connecting shaft and the first connecting shaft are driven by a bevel gear set. A clamping motor is also provided on the sliding bracket, and the clamping motor drives the second connecting shaft to rotate so that each lead screw rotates synchronously.

[0014] In the preferred embodiment, the sliding bracket is provided with at least two guide cones and guide sleeves, which are slidably connected. The supporting fixture is also provided with at least two guide holes, each guide cone is inserted into its respective guide hole, and a rotatable screw is provided inside the guide sleeve. The screw is threadedly connected to the guide cone, and a worm gear is provided at the end of the screw. The worm gear meshes with the worm, and the screw and the lead screw have opposite thread directions.

[0015] In the preferred scheme, The water-based sliding platform is constructed according to a special design. After the sliding platform is completed, sliding brackets, continuous jacks and traction cables are installed on the sliding track of the track beam. Hoist the support fixture onto the sliding bracket and temporarily secure it; Each steel tower segment is transported to the vicinity of the sliding platform by a transport ship, and then a floating crane is used to hoist the steel tower segment onto the supporting tooling frame; The posture of the steel tower segments is adjusted by using continuous jacks on two track beams and traction cables for synchronous and uninterrupted traction. During the traction process, the steel tower segments are monitored at all times to see if they are tilting. Repeat the sliding transfer process for the remaining segments until all segments have been transferred. In the preferred embodiment, the track beams are divided into two groups, each group is responsible for transporting one steel tower segment. After the sliding bracket on the track beam of the first group transports the steel tower segment to the construction area near the bridge tower, the support fixture is separated from the sliding bracket, and the crane lifts the support fixture and the steel tower segment together to the bridge tower construction area. Meanwhile, the next steel tower segment is hoisted onto the support frame on the second set of track beams and slid towards the bridge tower construction area from the transport ship; Driven by the travel motor, the sliding bracket of the first set of track beams returned to the area close to the transport ship. The first set of sliding brackets and the second set of sliding brackets alternately slide and transfer each steel tower segment until all steel tower segments have been transferred.

[0016] The beneficial effects of this invention are: 1) Through the special design of the water-based sliding platform, the problem of load-bearing and sliding of ultra-large tonnage steel towers is solved. It can bear both the static load of the 400-ton steel tower and the dynamic load generated during the sliding process of the 400-ton steel tower. 2) By analyzing 16 different cross-sections of 400-ton asymmetrical steel tower structures, and by simulating the center of gravity of each steel tower segment, the support frame of each segment was designed, ensuring the slip stability of the asymmetrical steel tower structure and greatly reducing the risk of collapse of the 400-ton asymmetrical steel tower structure. 3) The innovative use of continuous jack traction sliding construction, compared to conventional sliding construction which basically uses ordinary jacks or winches, allows for uninterrupted intelligent traction, greatly reducing the risk of asymmetrical structure tipping over due to multiple starts and stops, making the sliding process more stable and safer. 4) The use of dual sets of sliding tracks to alternately pull each steel tower segment ensures the continuity of construction, improves construction efficiency, and shortens the construction period; 5) The support fixtures are customized with different segment shapes and can be separated from the sliding brackets. After the steel tower segments are slid, the support fixtures are directly hoisted to the construction position, reducing the need for repeated installation and positioning of the fixtures. 6) The sliding bracket uses a distributed locking device to clamp the support fixture, which makes the force more uniform and reduces the risk of overturning of asymmetrical segments. The transmission linkage is used to uniformly control the guidance of the support fixture and the clamping of the locking device, which greatly reduces the positioning time and workload. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a layout diagram of the sliding system.

[0019] Figure 2 This is a schematic diagram of continuous jack traction.

[0020] Figure 3 This is a diagram of the internal and external support structure of the tooling frame.

[0021] Figure 4 This is a diagram showing the segmentation of the steel tower.

[0022] Figure 5 This is a layout diagram of the sliding system.

[0023] Figure 6 This is a diagram showing the separation of the supporting fixture and the sliding bracket.

[0024] Figure 7 This is a diagram showing the connection status between the supporting fixture and the sliding bracket.

[0025] Figure 8 This is a layout diagram of the locking device and transmission system on the sliding bracket.

[0026] Figure 9 This is a schematic diagram of the locking device in the clamping state.

[0027] Figure 10 This is a diagram showing the locking device in the released state.

[0028] In the figure: sliding bracket 1; slide seat 101; guide cone 102; guide sleeve 103; screw 104; locking device 2; abutment shaft 201; first cone surface 202; second cone surface 203; threaded sleeve 204; third cone surface 205; screw 206; seat cylinder 207; guide cylinder 208; stop cap 209; return spring 210; shaft shoulder 211; steel pipe pile 3; steel pipe pile horizontal coupling 301; support fixture 4; internal support frame 401; external support frame 402; vertical Support column 403; transverse horizontal connecting rod 404; conformal flange plate 405; positioning hole 406; guide hole 407; conical positioning ring 408; contact plate 409; track beam 5; track beam horizontal connecting rod 501; continuous jack 6; reaction seat 601; traction cable clamp 602; traction cable 7; anchor 701; steel tower segment 8; rack 9; traveling motor 10; worm gear 11; worm 12; first connecting shaft 13; second connecting shaft 14; bevel gear set 15; clamping motor 16. Detailed Implementation

[0029] Example 1: like Figure 1-10 A 400-ton asymmetric steel tower segment sliding system includes steel pipe piles 3 installed near the shore. At least four track beams 5 are mounted on the upper end of the steel pipe piles 3. One end of each track beam 5 is positioned near a transport ship, and the other end is positioned near the bridge tower construction area. At least two sliding brackets 1 are mounted on each track beam 5. Each sliding bracket 1 has a support fixture 4 for supporting steel tower segments 8. A continuous jack 6 is mounted on one end of each track beam 5 near the bridge tower construction area. A traction cable 7 is also provided, with one end connected to the continuous jack 6 and the other end used to pull the support fixture 4. At least two racks 9 are also provided, connected to the track beams 5. Each sliding bracket 1 has a traveling motor 10, with a gear at the shaft end of the traveling motor 10. The gear meshes with the rack 9. The support fixture 4 is separable from the sliding bracket 1.

[0030] Each steel pipe pile 3 is connected and fixed by multiple steel pipe pile horizontal bracing 301, and each track beam 5 is connected and fixed by multiple track beam horizontal bracing 501.

[0031] The lower end of the sliding bracket 1 is provided with a sliding seat 101, which is slidably engaged with the track beam 5.

[0032] The traveling motor 10 can drive the sliding bracket 1 to move back and forth along the track beam 5, moving back and forth between the transport ship and the bridge tower construction area.

[0033] In the preferred embodiment, the track beam 5 is provided with a reaction seat 601 at one end, one end of the continuous jack 6 rests against the reaction seat 601, the traction cable 7 passes through the reaction seat 601, and one end of the traction cable 7 is provided with an anchor 701, which is connected to the sliding bracket 1.

[0034] The continuous jack 6 includes two alternately moving traction cable clamps 602. When the first clamp clamps the traction cable 7 and pulls it towards the construction area, the second clamp releases the traction cable 7 and moves away from the construction area to reset. Then, when the second clamp clamps the traction cable 7 and pulls it towards the construction area, the first clamp releases the traction cable 7 and moves away from the construction area to reset. At least two continuous jacks 6 are used, respectively arranged on two track beams 5, to simultaneously pull the left and right sides of the steel tower segment 8 to prevent deviation.

[0035] In the preferred embodiment, the support fixture 4 includes an internal support frame 401 and an external support frame 402. The internal support frame 401 and the external support frame 402 are provided with connected vertical support columns 403 and horizontal horizontal connecting rods 404. Each vertical support column 403 is provided with a contoured flange plate 405 at its upper end, and the contoured flange plate 405 is connected to the outer wall of the steel tower segment 8.

[0036] In the preferred embodiment, the support fixture 4 is provided with a positioning hole 406, and the sliding bracket 1 is provided with a locking device 2. The positioning hole 406 is sleeved with the locking device 2 for positioning. The inner wall of the positioning hole 406 is provided with a conical positioning ring 408. The locking device 2 is provided with an extendable abutment shaft 201, and one end of the abutment shaft 201 abuts against the conical positioning ring 408.

[0037] The tapered locating ring 408 can be threaded into the inner wall of the locating hole 406 to facilitate adjustment of the height position.

[0038] The sliding bracket 1 is welded together with transverse and longitudinal connecting beams. Nine locking devices 2 are evenly distributed on the sliding bracket 1. The lower end of the support fixture 4 also adopts a welded frame as the connecting frame between the internal support frame 401 and the external support frame 402. The lower end of the support fixture 4 has the same number of positioning holes 406 as the locking devices 2. Each positioning hole 406 has one or more tapered positioning rings 408 along the height direction, with the tapered surface facing upward. Each positioning hole 406 has a contact plate 409 at its lower end. The positioning holes 406 and the contact plates 409 are precision machined.

[0039] In a preferred embodiment, the locking device 2 includes a seat 207, inside which is a rotatable lead screw 206. A threaded sleeve 204 is fitted onto the lead screw 206. The sleeve 204 is slidably connected to the inner wall of the seat 207. The sleeve 204 has a third conical surface 205. The seat 207 has a plurality of guide cylinders 208 arranged circumferentially. The abutment shaft 201 is slidably fitted with the guide cylinders 208. The abutment shaft 201 has a first conical surface 202 and a second conical surface 203 at both ends. The second conical surface 203 abuts against the third conical surface 205. The first conical surface 202 is used to abut against the conical positioning ring 408.

[0040] The threaded sleeve 204 is a regular polygon and will not rotate along the inner wall of the seat 207. When the lead screw 206 rotates, the threaded sleeve 204 slides and presses against the shaft 201. The shaft 201 extends outward and gradually contacts and presses against the conical positioning ring 408. Due to the small angle of the contact cone surface, it has a certain reverse self-locking ability, which can firmly clamp the support fixture 4 onto the sliding bracket 1.

[0041] In a preferred embodiment, the abutment shaft 201 is provided with a shoulder 211, a return spring 210 is sleeved on the outside of the abutment shaft 201, and a stop cap 209 is provided at the end of the guide cylinder 208. The two ends of the return spring 210 abut against the stop cap 209 and the shoulder 211 respectively.

[0042] When the lead screw 206 reverses and the lead sleeve 204 moves downward, each abutment shaft 201 retracts under the action of spring force.

[0043] In a preferred embodiment, the lead screw 206 is provided with a worm gear 11 at its end, and the sliding bracket 1 is also provided with a first connecting shaft 13. Multiple worms 12 are sleeved on the first connecting shaft 13, and each worm 12 meshes with each worm gear 11. A second connecting shaft 14 perpendicular to the first connecting shaft 13 is also provided. The second connecting shaft 14 and the first connecting shaft 13 are driven by a bevel gear set 15. The sliding bracket 1 is also provided with a clamping motor 16, which drives the second connecting shaft 14 to rotate so that each lead screw 206 rotates synchronously.

[0044] Using a single motor to uniformly drive all locking devices 2 to clamp the support fixture 4 results in rapid clamping operation, reduced hardware costs, and enhanced clamping consistency. The distributed force and unified clamping method makes the steel tower segment 8 more securely and reliably fixed.

[0045] In a preferred embodiment, the sliding bracket 1 is provided with at least two guide cones 102 and guide sleeves 103, which are slidably connected. The support fixture 4 is also provided with at least two guide holes 407, each guide cone 102 is inserted into each guide hole 407, and a rotatable screw 104 is provided inside the guide sleeve 103. The screw 104 is threadedly connected to the guide cone 102, and a worm gear 11 is provided at the end of the screw 104. The worm gear 11 meshes with the worm 12, and the screw 104 and the lead screw 206 have opposite thread directions.

[0046] The guide sleeve 103 has a keyway and a key inside, and the inner wall of the guide cone 102 has a guide groove to prevent the guide cone 102 from rotating. The abutment shaft 201 also adopts a key and guide groove structure to prevent rotation.

[0047] Initially, the guide cone 102 is in a raised state, higher than the locking device 2. When the crane lifts the support fixture 4 and places it on the sliding bracket 1, the guide cone 102 guides the guide hole 407 to prevent the support fixture 4 from colliding with and damaging the locking device 2. After the support fixture 4 falls onto the sliding bracket 1, the clamping motor 16 rotates, the guide cone 102 descends, and the bevel gear at the shaft end drives the bevel gear on the second connecting shaft 14 to rotate. The second connecting shaft 14 drives each first connecting shaft 13 to rotate synchronously through the bevel gear set 15, which in turn drives each second connecting shaft 14 to rotate synchronously. Finally, each abutment shaft 201 extends synchronously and abuts against the conical positioning ring 408.

[0048] In the preferred scheme, According to the special design, the water-based sliding platform was constructed. After the sliding platform was completed, the sliding bracket 1, continuous jack 6 and traction cable 7 were installed on the sliding track of the track beam 5. Hoist the support fixture 4 onto the sliding bracket 1 and temporarily fix it in place; Each steel tower segment 8 is transported to the vicinity of the sliding platform by a transport ship, and then a floating crane is used to hoist the steel tower segment 8 onto the support tooling frame 4; Adjust the posture of the steel tower segment 8 by using continuous jacks 6 on the two track beams 5 and traction cables 7 for synchronous and uninterrupted traction. During the traction process, monitor whether the steel tower segment 8 is tilted. Repeat the sliding transfer process for the remaining segments until all segments have been transferred. In the preferred embodiment, the track beam 5 is divided into two groups, each group is responsible for transporting one steel tower segment 8. After the sliding bracket 1 on the track beam 5 of the first group transports the steel tower segment 8 to the construction area near the bridge tower, the support fixture 4 is separated from the sliding bracket 1, and the crane lifts the support fixture 4 and the steel tower segment 8 together to the construction area of ​​the bridge tower. Meanwhile, the next steel tower segment 8 is hoisted onto the support fixture 4 on the second set of track beams 5 from the transport ship and slid towards the bridge tower construction area; Driven by the travel motor 10, the sliding bracket 1 of the first set of track beams 5 returns to the area close to the transport ship. The first set of sliding brackets 1 and the second set of sliding brackets 1 alternately slide and transfer each steel tower segment 8 until all steel tower segments 8 have been transferred.

[0049] Example 2: A sliding method for a 400-ton-class asymmetric steel tower structure is proposed. This method utilizes a specialized 400-ton-class water-based sliding platform. The structural form consists of ultra-deep steel pipe piles, longitudinal and transverse distribution beams, sliding track beams, and sliding seats. A steel tower support frame is added specifically for the asymmetric steel tower structure. Furthermore, intelligent continuous jacks, steel strands, and PTFE plates are cleverly employed to create a comprehensive water-based steel tower structure sliding construction method integrating specialized design and intelligent tooling. (1) A 400-ton asymmetric steel tower structure, characterized in that the steel tower structure is 6.6m high and has a total weight of 401t. It is a spatial asymmetric structure. The lower 3m of the first section of the steel tower is a hollow shell structure, that is, the weight is mainly concentrated in the upper 3.6m. The main tower is tilted to the right and the weight is mainly concentrated in the upper right.

[0050] (2) The aforementioned water-sliding platform is characterized in that it is 49m long, the steel pipe piles are made of 1000mm×10mm steel pipes, the first pile is located near the main pier on the riverbank, the horizontal spacing of the steel pipe piles is 8m, the longitudinal span is 6.5m, the depth of the steel pipe piles is 28m, and the maximum length is 40m. The horizontal bracing is made of 630mm×8mm steel pipe. The track beam is made of 2HN900×300 steel, the operating platform is set on the track beam, and 240a connecting supports are set between the track beams. The steel tower sliding support beam is planned to be made of 3HN900×300 steel, and the support beam connecting beam is made of 426mm×6mm steel pipe.

[0051] (3) The support frame is characterized in that the support frame adopts a frame structure, the center of gravity of the first section of the steel tower and the centroid of the steel support frame are on the same straight line, the steel support frame is provided with four columns, the columns are made of 426mm×6mm steel pipes, the support frame is fixed inside the steel tower and slides together with the steel tower; (4) The sliding fixture is characterized in that it consists of two 200t intelligent continuous jacks, steel strands, anchors, and a PTFE sliding plate laid on the track. The intelligent continuous jacks include a digital control cabinet system, a jack tensioning system, etc. The use of continuous jacks ensures that the sliding process is continuous and uninterrupted. Compared with conventional jacks or winches, it greatly increases the safety of sliding ultra-large tonnage steel towers.

[0052] (5) A sliding method for a 400-ton asymmetric steel tower structure, characterized by comprising the following steps: Step 1: Construct the water-based sliding platform according to the specific design. After the sliding platform is completed, install the sliding support beam, steel strand, intelligent continuous jack and corresponding anchors on the track beam slide. Step 2: Hoist the support frame onto the sliding support beam in advance and temporarily secure it; Step 3: The steel tower segments are transported to the vicinity of the main pier sliding platform by a 2000t transport ship (as close as possible while ensuring that the draft of the transport ship is sufficient). An 800t floating crane is used to hoist the first 401t steel tower segment onto the support frame. The center of gravity of the steel tower and the center of gravity of the support frame are checked to ensure that they are on the vertical straight line. After the check is completed, the tower is fixed. Step 4: Adjust the steel tower's posture and use 200t intelligent continuous jacks (equipped with steel strands and anchors) on two tracks for synchronous and uninterrupted traction. During the traction process, monitor the steel tower for tilting and other issues at all times. Slowly and continuously traction until the tower has slid 49m to complete the sliding. Step 5: After the first steel tower segment is slid out, adjust the position and spacing of the sliding support beams to accommodate subsequent large-tonnage steel towers with different cross-sections. Reinstall the support frame for the next steel tower segment (since the cross-sections of each steel tower segment are different, the support frame is also different). Repeat the above steps until all 16 four-hundred-ton asymmetric steel tower segments of this project have been slid out.

[0053] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A 400-ton-class asymmetric steel tower segment sliding system, characterized in that: The system includes steel pipe piles (3) set near the shore, with at least four track beams (5) on the upper end of the steel pipe piles (3). One end of the track beams (5) is used to approach the transport ship, and the other end of the track beams (5) is used to approach the bridge tower construction area. At least two sliding brackets (1) are provided on the track beams (5). Support fixtures (4) for supporting steel tower segments (8) are provided on the sliding brackets (1). A continuous jack (6) is provided on one end of each track beam (5) near the bridge tower construction area. A traction cable (7) is also provided. One end of the traction cable (7) is connected to the continuous jack (6), and the other end of the traction cable (7) is used to pull the support fixtures (4). At least two racks (9) are also provided. The racks (9) are connected to the track beams (5). A traveling motor (10) is provided on each sliding bracket (1). A gear is provided on the shaft end of the traveling motor (10). The gear meshes with the rack (9). The support fixtures (4) and the sliding brackets (1) can be separated. The support fixture (4) is provided with a positioning hole (406), and the sliding bracket (1) is provided with a locking device (2). The positioning hole (406) and the locking device (2) are fitted together for positioning. The inner wall of the positioning hole (406) is provided with a conical positioning ring (408). The locking device (2) is provided with an extendable abutment shaft (201). One end of the abutment shaft (201) abuts against the conical positioning ring (408). The locking device (2) includes a seat (207), a rotatable lead screw (206) is provided inside the seat (207), a threaded sleeve (204) is fitted on the lead screw (206), the sleeve (204) is slidably connected to the inner wall of the seat (207), the sleeve (204) is provided with a third conical surface (205), the seat (207) is provided with a plurality of guide cylinders (208) along the circumference, the abutment shaft (201) is slidably sleeved with the guide cylinders (208), the abutment shaft (201) is provided with a first conical surface (202) and a second conical surface (203) at both ends of the abutment shaft (201), the second conical surface (203) abuts against the third conical surface (205), and the first conical surface (202) is used to abut against the conical positioning ring (408).

2. The 400-ton asymmetric steel tower segment sliding system according to claim 1, characterized in that: The track beam (5) is provided with a reaction seat (601) at one end. One end of the continuous jack (6) rests against the reaction seat (601). The traction cable (7) passes through the reaction seat (601). One end of the traction cable (7) is provided with an anchor (701). The anchor (701) is connected to the sliding bracket (1).

3. The 400-ton asymmetric steel tower segment sliding system according to claim 1, characterized in that: The support fixture (4) includes an internal support frame (401) and an external support frame (402). The internal support frame (401) and the external support frame (402) are provided with connected vertical support columns (403) and horizontal horizontal connecting rods (404). Each vertical support column (403) has a contoured flange plate (405) at its upper end, and the contoured flange plate (405) is connected to the outer wall of the steel tower segment (8).

4. The 400-ton asymmetric steel tower segment sliding system according to claim 1, characterized in that: it abuts against... The shaft (201) is provided with a shoulder (211), and a return spring (210) is sleeved against the outside of the shaft (201). The end of the guide cylinder (208) is provided with a stop cap (209), and the two ends of the return spring (210) abut against the stop cap (209) and the shoulder (211) respectively.

5. The 400-ton asymmetric steel tower segment sliding system according to claim 4, characterized in that: The end of the lead screw (206) is provided with a worm gear (11), and the sliding bracket (1) is also provided with a first connecting shaft (13). Multiple worms (12) are sleeved on the first connecting shaft (13), and each worm (12) meshes with each worm gear (11). A second connecting shaft (14) is also provided perpendicular to the first connecting shaft (13). The second connecting shaft (14) and the first connecting shaft (13) are driven by a bevel gear set (15). The sliding bracket (1) is also provided with a clamping motor (16), which drives the second connecting shaft (14) to rotate so that each lead screw (206) rotates synchronously.

6. The 400-ton asymmetric steel tower segment sliding system according to claim 5, characterized in that: The sliding bracket (1) is provided with at least two guide cones (102) and guide sleeves (103), the guide cones (102) and guide sleeves (103) are slidably connected, the support fixture (4) is also provided with at least two guide holes (407), each guide cone (102) is inserted into each guide hole (407), the guide sleeve (103) is provided with a rotatable screw (104), the screw (104) is threadedly connected to the guide cone (102), the end of the screw (104) is provided with a worm wheel (11), the worm wheel (11) meshes with the worm (12), and the screw (104) and the lead screw (206) have opposite thread directions.

7. The sliding method of the 400-ton asymmetric steel tower segment sliding system according to claim 1, characterized in that: According to the special design, the water sliding platform is constructed. After the sliding platform is completed, the sliding bracket (1), continuous jack (6) and traction cable (7) are installed on the slide of the track beam (5). The support fixture (4) is hoisted onto the sliding bracket (1) and temporarily fixed; Each steel tower segment (8) is transported to the vicinity of the sliding platform by a transport ship, and the steel tower segment (8) is hoisted onto the support tooling frame (4) by a floating crane; Adjust the posture of the steel tower segment (8), and use the continuous jacks (6) on the two track beams (5) and the traction cable (7) to pull synchronously and continuously. During the traction process, monitor whether the steel tower segment (8) is tilted, etc. Repeat the sliding transfer process for the remaining segments until all segments have been transferred.

8. The sliding method of the 400-ton asymmetric steel tower segment sliding system according to claim 7, characterized in that: The track beam (5) is divided into two groups, each group is responsible for transporting one steel tower segment (8). After the sliding bracket (1) on the track beam (5) of the first group transports the steel tower segment (8) to the construction area near the bridge tower, the support fixture (4) is separated from the sliding bracket (1), and the crane lifts the support fixture (4) and the steel tower segment (8) together to the construction area of ​​the bridge tower. Meanwhile, the next steel tower segment (8) is hoisted onto the support fixture (4) on the second set of track beams (5) on the transport ship and slid towards the bridge tower construction area; Driven by the travel motor (10), the sliding bracket (1) of the first set of track beams (5) returns to the area close to the transport ship. The first set of sliding brackets (1) and the second set of sliding brackets (1) alternately slide and transfer each steel tower segment (8) until all steel tower segments (8) have been transferred.

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