High pier lifting type creeping formwork construction method

Abstract

The invention belongs to the technical field of bridge pier pouring, and particularly relates to a high pier lifting type creeping formwork construction method which comprises the steps that firstly, a plurality of fixing supporting columns are fixedly installed and pre-embedded in a bridge abutment, the positions of the fixing supporting columns are guaranteed, and a fixing base is fixedly installed on the four fixing supporting columns and is guaranteed to be perpendicular to the bridge abutment; according to the high pier lifting type creeping formwork construction method, a fixing device is arranged and used for fixing a movable seat and a base with a pier, the fixing device comprises a fixing mechanism and a locking mechanism, after a pushing block is pushed to move through a fixing hydraulic cylinder, two locking blocks are made to move oppositely, and then the two locking blocks are inserted into a fixing seat and fixed to the fixing seat; through movement of the trapezoidal block, the lock frame can ascend and then descend, the lock block can be inserted into the two ends of the lock block after being inserted into the fixed seat, the lock block and the fixed seat can be stably fixed, and therefore it can be ensured that the movable seat, the base and the pier are stably fixed.

Description

Technical Field

[0001] The invention relates to the technical field of pouring bridge piers, and in particular to a high pier lifting climbing formwork construction method. Background Art

[0002] At present, the trunk lines of the national expressway network have been completed, and the branch lines and connecting lines of expressways in better areas have also been built. In the future, the construction of expressways will focus on branch lines and connecting lines in mountainous areas and expressways in the Northwest mountainous areas. The construction of expressways has gradually extended to mountainous areas, where the terrain is rugged and the terrain is mostly deep gullies and steep slopes. High-pier and large-span continuous rigid frame bridges are widely used in mountain road construction due to their own advantages.

[0003] Conventional high pier construction methods include flip formwork, sliding formwork, and climbing formwork. The flip formwork method involves many high-altitude hoisting operations, uncontrollable safety hazards, slow construction progress, and long construction duration, which results in high costs for supporting equipment and management and low economic benefits. The sliding formwork method has better safety during the construction process, but the sliding formwork system must be dismantled at high altitude, which poses great safety hazards. The most serious problem is that product quality is difficult to control. The ordinary climbing formwork method has great safety risks and many repetitive processes, which require manual disassembly and long working hours. After the construction is completed, it also requires manual disassembly at high altitude. After the fixed position is removed, it can be climbed under the push of a hydraulic cylinder, which requires manual operation on the climbing device, posing great safety hazards. Summary of the invention

[0004] Based on the technical problems that the existing climbing formwork devices have many repetitive processes, require manual disassembly, have long working hours, require manual operation on the climbing device, and have great safety hazards, the present invention proposes a high pier lifting climbing formwork construction method.

[0005] The invention proposes a high pier lifting climbing formwork construction method, comprising the step 1: fixing a plurality of fixed pillars respectively on the pre-buried bridge piers to ensure the positions of the fixed pillars, fixing a fixed seat on four fixed pillars to ensure that the fixed seat is perpendicular to the bridge piers.

[0006] Step 2: After installing the climbing formwork equipment on the ground, use the lifting equipment to hoist the climbing formwork equipment as a whole parallel to the bridge pier, and then fix the four sets of climbing formwork equipment to the four fixed pillars.

[0007] Step 3: Install the vertical and horizontal steel bars of the first pier section on the embedded steel bars on the bridge pier, and then pour the concrete of the first pier section.

[0008] Step 4: After the concrete reaches the demolding strength, demold it by moving the climbing formwork equipment. After fixing the fixed pillars on the poured piers, fix the fixed seats to the fixed pillars, rise through the climbing formwork equipment, fix them to the installed fixed seats, and continue pouring the next section.

[0009] Preferably, the climbing formwork equipment described in step 2 includes a base, a lifting device, a fixing device, a self-locking device and a guide formwork mechanism.

[0010] A lifting device is located on the upper surface of the base and lifts the mold guide mechanism. The lifting device includes a moving seat. The lifting and lowering of the moving seat drives the mold guide mechanism to lift and lower.

[0011] The two fixing devices are respectively located on the outer surfaces of the base and the movable seat, and fix the lifting device and the fixed seat. The fixing device includes a fixing mechanism and a locking mechanism. The fixing mechanism includes a locking block, and the locking block is fixed after being inserted between the movable and the fixed seat. The locking mechanism includes a locking frame, and the locking frame is fixed to both ends of the locking block after being lowered.

[0012] A self-locking device is located on the outer surface of the moving frame and fixes the moving frame and the lifting device. The self-locking device includes a fixing rod, and the movement of the fixing rod fixes the lifting device.

[0013] A mold guiding device includes an outer mold plate used for casting, and the mold guiding device is located on the upper surface of the movable seat. The outer mold plate is demoulded after being moved.

[0014] Preferably, a lifting screw is fixedly installed on the upper surface of the base through a bearing, a limit rod is fixedly installed on the upper surface of the base, one end of the limit rod is fixedly installed with a limit plate, one end of the lifting screw is fixedly installed with the upper surface of the limit plate through a bearing, a lifting motor is fixedly installed on the outer surface of the limit plate, the output shaft of the lifting motor drives the rotation of the lifting screw through a gear set, the moving seat is threadedly connected to the outer surface of the lifting screw, and the moving seat is slidably inserted into the outer surface of the limit rod.

[0015] Through the above technical solution, the movable seat can be driven to move up and down by the rotation of the lifting screw rod. After the movable seat is fixed, the rotation of the lifting screw rod can drive the base to move up, thereby realizing automatic climbing.

[0016] Preferably, the fixing mechanism also includes a fixed hydraulic cylinder, and a plurality of the fixed hydraulic cylinders are respectively fixedly installed on the upper surface of the base and the lower surface of the movable seat, and the upper surface of the base and the lower surface of the movable seat are fixedly installed with a limiting groove, the inner wall of the limiting groove is slidably connected with one end of the locking block, and one end of the locking block is slidably connected with the inner wall of the fixed seat.

[0017] Through the above technical solution, the locking block can be pushed into the fixed seat by the push of the fixed hydraulic cylinder, so as to facilitate the fixing of the movable seat and the base to the cast pier.

[0018] Preferably, a push block is slidably sleeved on one end of the telescopic rod of the fixed hydraulic cylinder, and the outer surfaces of both sides of the push block are slidably inserted into the outer side surface of the locking block. A push ring is slidably inserted on one end of the telescopic rod of the fixed hydraulic cylinder, and a reset spring for forcing the push ring to reset is fixedly installed on one end of the telescopic rod of the fixed hydraulic cylinder.

[0019] Through the above technical solution, the push block can be pushed to move after the push ring contacts the push block. After the push block moves and contacts the inner wall of the limit groove, it will be limited. The continued push of the fixed hydraulic cylinder can compress the return spring, so that the fixed hydraulic cylinder can continue to push the trapezoidal block to move.

[0020] Preferably, the locking mechanism also includes a push rod with a roller, one end of the push rod is fixedly mounted on the outer surface of the lock frame, both ends of the lock frame are slidably inserted into the interior of the fixed seat, both ends of the lock frame are slidably inserted into the outer surface of the lock block, a connecting spring is fixedly mounted on the outer surface of the fixed seat to force the lock frame to reset, a trapezoidal block is fixedly mounted on one end of the piston rod of the fixed hydraulic cylinder, and the outer surface of the trapezoidal block is slidably connected to the outer surface of the roller of the push rod.

[0021] Through the above technical solution, the movement of the trapezoidal block can drive the lock frame to rise and fall. After the lock block is inserted into the fixed seat, the lock frame can be lowered to be inserted with the two ends of the lock block, making the fixation between the lock block and the fixed seat more stable.

[0022] Preferably, the self-locking device also includes a self-locking motor, the outer surface of the self-locking motor is fixedly mounted on the upper surface of the movable seat, a fixing ring is fixedly mounted on the lower surface of the movable seat, the outer surface of the fixing ring is rotatably connected to a driving ring, and one end of the output shaft of the self-locking motor drives the driving ring to rotate through a gear set.

[0023] Through the above technical solution, the driving ring is driven to rotate by the self-locking motor, so that the fixing rod is automatically controlled to rotate.

[0024] Preferably, the outer surface of the driving ring is slidably plugged with one end of the fixing rod, one end of the fixing rod is slidably plugged with the outer surface of the fixing ring via a pin, and the outer surface of the fixing rod is fitted with the outer surface of the limiting rod.

[0025] Through the above technical solution, the driving ring is rotated to deflect one end of the fixing rod, so that the limiting rod can be clamped and released, which is convenient for stable fixation of the moving seat.

[0026] Preferably, the upper surface of the movable seat is slidably connected to the outer surface of the outer template through a guide rail, and the upper surface of the movable seat is hinged with a pushing hydraulic cylinder through a pin shaft, and one end of the piston rod of the pushing hydraulic cylinder is hinged to the outer side surface of the outer template.

[0027] Through the above technical solution, the outer template can be moved by pushing the hydraulic cylinder, which is convenient for automatic demoulding and multiple outer templates can be surrounded by a mold to facilitate casting.

[0028] Preferably, a frame is fixedly mounted on the upper surface of the movable seat, and an operating platform is fixedly mounted on the outer surface of the frame.

[0029] Through the above technical solution, the operating platform makes it convenient for workers to fix the pillars.

[0030] The beneficial effects of the present invention are:

[0031] 1. A lifting device is provided to lift the mold guide mechanism. The lifting device includes a moving seat. The moving seat drives the mold guide mechanism to lift and lower by lifting. A lifting screw is installed on the upper surface of the base and fixed by a bearing. At the same time, a limit rod is fixed on the upper surface of the base. A limit plate is installed at one end of the limit rod. One end of the lifting screw is fixed to the limit plate by a bearing. The lifting motor is installed on the outer surface of the limit plate. Its output shaft drives the lifting screw to rotate through a gear set. The moving seat can be lifted and lowered by the rotation of the lifting screw. After the moving seat is fixed, the rotation of the lifting screw causes the base to drive the lifting screw to rise, which is convenient for the next rise of the moving seat, thereby realizing the automatic climbing function. This design can improve the operating efficiency and ensure the stability and accuracy of the mold guide mechanism during the working process. It solves the technical problems of the existing climbing mold device with many repeated processes, long working time, manual operation on the climbing device, and great safety hazards.

[0032] 2. A fixing device is provided to fix the movable seat and the base to the bridge pier. The fixing device includes a fixing mechanism and a locking mechanism. After the push block is pushed by the fixed hydraulic cylinder to move, the two locking blocks move in opposite directions and are inserted into the fixed seat to be fixed to the fixed seat. Through the movement of the trapezoidal block, the locking frame can be raised and then lowered, which can facilitate the insertion of the locking block and the fixed seat and then insert the locking block into the two ends of the locking block, so that the locking block and the fixed seat can be stably fixed, thereby ensuring the stable fixation between the movable seat and the base and the bridge pier, solving the technical problems of the existing climbing formwork device with many repeated processes, manual disassembly, long working time, manual operation on the climbing device, and great safety hazards.

[0033] 3. A self-locking device is provided to fix the movable frame and the limit rod. The self-locking motor drives the rotation of the driving ring. The rotation of the driving ring drives the fixed rod to deflect, so that the fixed rod can clamp the limit rod and fix the movable seat to maintain the stability of the movable seat, thereby facilitating the casting work, supporting the movement of the outer formwork and the fixation of the operating platform, so that the movable seat and the outer formwork can be stably fixed and automatically controlled, so as to facilitate the operation of relevant staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a high pier lifting climbing formwork construction method proposed by the present invention;

[0035] Figure 2 A three-dimensional diagram of a lifting screw rod structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0036] Figure 3 A three-dimensional diagram of a limit rod structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0037] Figure 4 A three-dimensional diagram of a fixed hydraulic cylinder structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0038] Figure 5 A three-dimensional diagram of a locking block structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0039] Figure 6 A three-dimensional diagram of a push block structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0040] Figure 7 A three-dimensional diagram of a self-locking motor structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0041] Figure 8 A three-dimensional diagram of a fixing rod structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0042] Fig. 9 A three-dimensional diagram of the operating platform structure of a high pier lifting climbing formwork construction method proposed by the present invention;

[0043] Fig.10 A three-dimensional diagram of the outer formwork structure of a high pier lifting climbing formwork construction method proposed by the present invention.

[0044] In the figure: 1. base; 2. lifting screw; 21. limit rod; 22. limit plate; 23. lifting motor; 24. moving seat; 3. fixed hydraulic cylinder; 31. limit groove; 32. locking block; 33. push block; 34. push ring; 35. reset spring; 4. locking frame; 41. push rod; 42. connecting spring; 43. trapezoidal block; 5. self-locking motor; 51. fixed ring; 52. driving ring; 53. fixed rod; 6. outer template; 61. push hydraulic cylinder; 62. frame; 63. operating platform; 7. fixed pillar; 71. fixed seat. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] A high pier lifting climbing formwork construction method includes step 1: fixing a plurality of fixed pillars 7 on the pre-buried bridge piers to ensure the positions of the fixed pillars 7, fixing a fixed seat 71 on four fixed pillars 7 to ensure that the fixed seat 71 is perpendicular to the bridge piers.

[0047] Step 2: After the climbing formwork equipment is installed on the ground, the climbing formwork equipment is hoisted as a whole parallel to the bridge pier by a lifting device, and then the four sets of climbing formwork equipment are fixed to the four fixed pillars 7.

[0048] Step 3: Install the vertical and horizontal steel bars of the first pier section on the embedded steel bars on the bridge pier, and then pour the concrete of the first pier section.

[0049] Step 4: After the concrete reaches the demolding strength, demolding is carried out by moving the climbing formwork equipment. After fixing the fixed pillar 7 on the cast pier, fix the fixed seat 71 to the fixed pillar 7, rise it through the climbing formwork equipment, fix it to the installed fixed seat 71, and continue with the next section of casting.

[0050] Reference Figure 1-Figure 10 The climbing formwork equipment in step 2 includes a base 1, a lifting device, a fixing device, a self-locking device and a guide formwork mechanism.

[0051] like Figure 2-Figure 3 As shown, in order to automatically lift the climbing formwork, a lifting device is provided, which is located on the upper surface of the base 1 and lifts the guide formwork mechanism. The lifting device includes a moving seat 24, and the lifting of the moving seat 24 drives the guide formwork mechanism to lift.

[0052] Specifically, in order to automatically perform the lifting and lowering work, a lifting screw 2 is fixedly installed on the upper surface of the base 1 through a bearing, a limit rod 21 is fixedly installed on the upper surface of the base 1, and a limit plate 22 is fixedly installed on one end of the limit rod 21. One end of the lifting screw 2 is fixedly installed on the upper surface of the limit plate 22 through a bearing, and a lifting motor 23 is fixedly installed on the outer surface of the limit plate 22. The output shaft of the lifting motor 23 drives the rotation of the lifting screw 2 through a gear set. The moving seat 24 is threadedly connected to the outer surface of the lifting screw 2, and the moving seat 24 is slidably inserted into the outer surface of the limit rod 21.

[0053] like Figure 4-Figure 6 As shown, in order to fix the base 1 and facilitate stable pouring work, a fixing device is provided. The two fixing devices are respectively located on the outer surfaces of the base 1 and the movable seat 24, and fix the lifting device and the fixed seat 71. The fixing device includes a fixing mechanism and a locking mechanism. The fixing mechanism includes a locking block 32. The locking block 32 is fixed after being inserted between the movable and fixed seat 71. The locking mechanism includes a locking frame 4. The locking frame 4 is fixed to both ends of the locking block 32 after being lowered.

[0054] Specifically, in order to automatically perform the fixing work, the fixing mechanism also includes a fixed hydraulic cylinder 3, and multiple fixed hydraulic cylinders 3 are respectively fixedly installed on the upper surface of the base 1 and the lower surface of the movable seat 24. The upper surface of the base 1 and the lower surface of the movable seat 24 are fixedly installed with a limiting groove 31. The inner wall of the limiting groove 31 is slidably plugged with one end of the locking block 32, and one end of the locking block 32 is slidably plugged with the inner wall of the fixed seat 71.

[0055] Specifically, in order to facilitate the fixed hydraulic cylinder 3 to push the lock frame 4 to rise and fall, a push block 33 is slidably sleeved on one end of the telescopic rod of the fixed hydraulic cylinder 3, and the outer surfaces of both sides of the push block 33 are slidably inserted with the outer side surface of the lock block 32, and a push ring 34 is slidably inserted on one end of the telescopic rod of the fixed hydraulic cylinder 3, and a reset spring 35 is fixedly installed on one end of the telescopic rod of the fixed hydraulic cylinder 3 to force the push ring 34 to return to its original position.

[0056] Specifically, in order to fix the locking block 32, the locking mechanism also includes a pushing rod 41 with a roller, one end of the pushing rod 41 is fixedly installed on the outer surface of the locking frame 4, the two ends of the locking frame 4 are slidably inserted into the interior of the fixed seat 71, the two ends of the locking frame 4 are slidably inserted into the outer surface of the locking block 32, and the outer surface of the fixed seat 71 is fixedly installed with a connecting spring 42 for forcing the locking frame 4 to reset, and one end of the piston rod of the fixed hydraulic cylinder 3 is fixedly installed with a trapezoidal block 43, and the outer surface of the trapezoidal block 43 is slidably connected to the outer surface of the roller of the pushing rod 41. In order to stably fix the moving seat 24, a plurality of fixing devices can be set, and the fixation between the fixed pillar 7 and the bridge pier and the fixed pillar 7 and the fixed seat 71 can be strengthened.

[0057] like Figure 7-Figure 8As shown, in order to fix the moving seat 24, a self-locking device is provided. The self-locking device is located on the outer surface of the moving frame and fixes the moving frame and the lifting device. The self-locking device includes a fixing rod 53. The movement of the fixing rod 53 fixes the lifting device.

[0058] Specifically, in order to automatically drive the fixed rod 53 to deflect, the self-locking device also includes a self-locking motor 5, the outer surface of the self-locking motor 5 is fixedly installed on the upper surface of the moving seat 24, and a fixing ring 51 is fixedly installed on the lower surface of the moving seat 24. The outer surface of the fixing ring 51 is rotatably connected to the driving ring 52, and one end of the output shaft of the self-locking motor 5 drives the driving ring 52 to rotate through a gear set.

[0059] Specifically, in order to drive the fixing rod 53 to deflect and realize the clamping and releasing of the limiting rod 21, the outer surface of the driving ring 52 is slidably plugged with one end of the fixing rod 53, and one end of the fixing rod 53 is slidably plugged with the outer surface of the fixing ring 51 through a pin shaft, and the outer surface of the fixing rod 53 is in contact with the outer surface of the limiting rod 21.

[0060] like Figure 9-10 As shown, in order to cast concrete, a guide mold device is provided, the guide mold device includes an outer mold plate 6 used for casting, the guide mold device is located on the upper surface of the movable seat 24, and the outer mold plate 6 is demoulded after being moved.

[0061] Specifically, in order to automatically guide the mold and automatically demold, the upper surface of the movable seat 24 is slidably inserted with the outer surface of the outer mold plate 6 through a guide rail, and the upper surface of the movable seat 24 is hinged with a pushing hydraulic cylinder 61 through a pin shaft, and one end of the piston rod of the pushing hydraulic cylinder 61 is hinged to the outer side surface of the outer mold plate 6.

[0062] Specifically, in order to facilitate the operation of the operator, a frame 62 is fixedly installed on the upper surface of the movable seat 24 , and an operating platform 63 is fixedly installed on the outer surface of the frame 62 .

[0063] Working principle: when pouring bridge piers, a fixed support 7 is fixed on the bridge pier, and then the fixed seat 71 is fixedly installed on the fixed support 7. After the climbing formwork device is hoisted as a whole parallel to the bridge pier by the lifting equipment, the base 1 is placed on the ground. After ensuring stability, the fixed hydraulic cylinder 3 is started to push the trapezoidal block 43 to move. After the trapezoidal block 43 moves forward, the lock frame 4 on the fixed seat 71 is driven to rise, so that the connecting spring 42 is stretched. After the fixed hydraulic cylinder 3 continues to push, the push ring 34 contacts the push block 33, which can push the push block 33 in the limit groove 31 to move. After the push block 33 contacts the inner wall of the limit groove 31, the push block 33 drives the two locking blocks 32 slidably plugged with it to move to both sides, so that the locking block 32 is plugged into the groove of the fixed seat 71.

[0064] The fixed hydraulic cylinder 3 continues to push, and after the limiting groove 31 limits the push block 33, the push block 33 cannot be pushed to move, so that the push ring 34 continues to move on the fixed hydraulic cylinder 3, compressing the reset spring 35, and the fixed hydraulic cylinder 3 pushes the trapezoidal block 43, so that the push rod 41 on the lock frame 4 is located on one side of the trapezoidal block 43. After the lock frame 4 is pulled down by the connecting spring 42, the two ends of the lock frame 4 are inserted into one end of the lock block 32 to fix the lock block 32;

[0065] After the pushing hydraulic cylinder 61 on the moving seat 24 pushes the outer template 6 close to the bridge pier, it contacts with the bridge pier, and the outer template 6 is surrounded by a rectangular frame shape, which is convenient for pouring concrete. After the pouring is completed, after the concrete is dried and formed, the pushing hydraulic cylinder 61 drives the outer template 6 to retreat for demoulding. After the demoulding is completed, the fixed pillar 7 is manually fixed on the poured bridge pier, and then the fixed seat 71 is fixed on the fixed pillar 7. The self-locking motor 5 on the moving seat 24 is started, driving the driving ring 52 to rotate, and the driving ring 52 drives the multiple fixed rods 53 to rotate. After the fixed rod 53 is deflected, the fixation of the limit rod 21 is released;

[0066] The pushing hydraulic cylinder 61 on the moving seat 24 retracts, driving the lock frame 4 to rise, so that the locking block 32 is separated from the fixed seat 71. After the moving seat 24 is unfixed, the lifting motor 23 on the limit plate 22 is started, and the lifting screw 2 is driven to rotate by the gear set, and the lifting screw 2 drives the moving seat 24 to rise, so that the locking block 32 on the moving seat 24 is located between the cast pier fixed seats 71. Through the push of the fixed hydraulic cylinder 3, the locking block 32 is inserted into the fixed seat 71, and the fixing of the moving seat 24 is completed.

[0067] After the fixed hydraulic cylinder 3 on the base 1 retracts and the fixation of the base 1 is released, the lifting screw rod 2 rotates to drive the base 1 and the lifting screw rod 2 to rise synchronously, so that the base 1 is located on one side of the fixed seat 71 above the bridge pier and is fixed to the fixed seat 71, the fixed hydraulic cylinder 3 on the moving seat 24 retracts, the lifting screw rod 2 rotates to drive the moving seat 24 to rise, and then drives the outer formwork 6 to be lifted, and then the casting of the third section is carried out.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high pier lifting climbing formwork construction method, characterized in that: The method comprises the following steps: fixing a plurality of fixed pillars (7) respectively on the pre-buried bridge piers to ensure the positions of the fixed pillars (7); fixing a fixing seat (71) on the four fixed pillars (7) to ensure that the fixing seat (71) is perpendicular to the bridge piers; Step 2: After the climbing formwork equipment is installed on the ground, the climbing formwork equipment is hoisted as a whole parallel to the bridge pier by a lifting device, and then four sets of climbing formwork equipment are fixed to four fixed pillars (7); Step 3: Install the vertical and horizontal steel bars of the first section of the pier on the embedded steel bars on the bridge pier, and then pour the concrete of the first section of the pier; Step 4: After the concrete reaches the demoulding strength, demoulding is performed by moving the climbing formwork device. After fixing the fixed pillar (7) on the poured bridge pier, the fixed seat (71) is fixed to the fixed pillar (7), and the climbing formwork device is used to ascend, and after being fixed to the installed fixed seat (71), the next section of pouring is continued.

2. A high pier lifting climbing formwork construction method according to claim 1, characterized in that: The climbing formwork device described in step 2 comprises a base (1), a lifting device, a fixing device, a self-locking device and a guide formwork mechanism; A lifting device, the lifting device is located on the upper surface of the base (1) and lifts the mold guide mechanism, the lifting device comprises a moving seat (24), and the lifting and lowering of the moving seat (24) drives the mold guide mechanism to be lifted and lowered; A fixing device, wherein the two fixing devices are respectively located on the outer surface of the base (1) and the movable seat (24), and fix the lifting device and the fixed seat (71), the fixing device comprises a fixing mechanism and a locking mechanism, the fixing mechanism comprises a locking block (32), the locking block (32) moves and is fixed after being plugged into the fixed seat (71), and the locking mechanism comprises a locking frame (4), and the locking frame (4) is fixed to both ends of the locking block (32) after being lowered; A self-locking device, the self-locking device is located on the outer surface of the movable frame and fixes the movable frame and the lifting device, the self-locking device comprises a fixing rod (53), and the movement of the fixing rod (53) fixes the lifting device; A mold guide device, the mold guide device comprises an outer mold plate (6) used for casting, the mold guide device is located on the upper surface of the movable seat (24), and the outer mold plate (6) is demoulded after being moved.

3. A high pier lifting climbing formwork construction method according to claim 2, characterized in that: A lifting screw (2) is fixedly mounted on the upper surface of the base (1) via a bearing, a limiting rod (21) is fixedly mounted on the upper surface of the base (1), one end of the limiting rod (21) is fixedly mounted on a limiting plate (22), one end of the lifting screw (2) is fixedly mounted on the upper surface of the limiting plate (22) via a bearing, a lifting motor (23) is fixedly mounted on the outer surface of the limiting plate (22), an output shaft of the lifting motor (23) drives the lifting screw (2) to rotate via a gear set, the moving seat (24) is threadedly connected to the outer surface of the lifting screw (2), and the moving seat (24) is slidably plugged into the outer surface of the limiting rod (21).

4. A high pier lifting climbing formwork construction method according to claim 2, characterized in that: The fixing mechanism further comprises a fixed hydraulic cylinder (3), wherein a plurality of the fixed hydraulic cylinders (3) are respectively fixedly mounted on the upper surface of the base (1) and the lower surface of the movable seat (24), and a limiting groove (31) is fixedly mounted on the upper surface of the base (1) and the lower surface of the movable seat (24), wherein the inner wall of the limiting groove (31) is slidably plugged with one end of the locking block (32), and one end of the locking block (32) is slidably plugged with the inner wall of the fixed seat (71).

5. A high pier lifting climbing formwork construction method according to claim 4, characterized in that: A push block (33) is slidably sleeved at one end of the telescopic rod of the fixed hydraulic cylinder (3), and the outer surfaces of both sides of the push block (33) are slidably plugged with the outer side surface of the locking block (32). A push ring (34) is slidably plugged at one end of the telescopic rod of the fixed hydraulic cylinder (3), and a reset spring (35) for forcing the push ring (34) to reset is fixedly installed at one end of the telescopic rod of the fixed hydraulic cylinder (3).

6. A high pier lifting climbing formwork construction method according to claim 5, characterized in that: The locking mechanism also includes a push rod (41) with a roller, one end of the push rod (41) is fixedly mounted on the outer surface of the lock frame (4), both ends of the lock frame (4) are slidably plugged into the interior of the fixed seat (71), both ends of the lock frame (4) are slidably plugged into the outer surface of the lock block (32), a connecting spring (42) for forcing the lock frame (4) to reset is fixedly mounted on the outer surface of the fixed seat (71), a trapezoidal block (43) is fixedly mounted on one end of the piston rod of the fixed hydraulic cylinder (3), and the outer surface of the trapezoidal block (43) is slidably connected to the outer surface of the roller of the push rod (41).

7. A high pier lifting climbing formwork construction method according to claim 3, characterized in that: The self-locking device further comprises a self-locking motor (5), the outer surface of the self-locking motor (5) being fixedly mounted on the upper surface of the movable seat (24), a fixing ring (51) being fixedly mounted on the lower surface of the movable seat (24), the outer surface of the fixing ring (51) being rotatably connected to a driving ring (52), and one end of the output shaft of the self-locking motor (5) driving the driving ring (52) to rotate via a gear set.

8. A high pier lifting climbing formwork construction method according to claim 7, characterized in that: The outer surface of the driving ring (52) is slidably plugged into one end of the fixing rod (53), and one end of the fixing rod (53) is slidably plugged into the outer surface of the fixing ring (51) via a pin shaft, and the outer surface of the fixing rod (53) is in contact with the outer surface of the limiting rod (21).

9. A high pier lifting climbing formwork construction method according to claim 2, characterized in that: The upper surface of the movable seat (24) is slidably connected to the outer surface of the outer template (6) via a guide rail, and the upper surface of the movable seat (24) is hinged with a pushing hydraulic cylinder (61) via a pin shaft, and one end of the piston rod of the pushing hydraulic cylinder (61) is hinged to the outer side surface of the outer template (6).

10. A high pier lifting climbing formwork construction method according to claim 2, characterized in that: A frame (62) is fixedly mounted on the upper surface of the movable seat (24), and an operating platform (63) is fixedly mounted on the outer surface of the frame (62).

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