Creeping formwork structure

Abstract

The invention relates to a creeping formwork structure, and belongs to the field of high pier construction technology, the creeping formwork structure comprises a guide rail, a support frame, a positioning assembly, a lifting mechanism, a formwork removal mechanism and a formwork, the guide rail is vertically and slidably arranged on a concrete structure, the support frame is slidably arranged on the guide rail, and the positioning assembly is arranged on the concrete structure and used for positioning the guide rail and the support frame; the lifting mechanism is arranged on the guide rail and used for driving the supporting frame to be lifted. The formwork removal mechanism comprises a sliding seat, a first driving part and a second driving part, the sliding seat is slidably arranged on the supporting frame in the direction facing the concrete structure, the formwork is hinged to the sliding seat in the direction facing the concrete structure, and the first driving part is arranged on the supporting frame and used for driving the sliding seat to slide; the second driving piece is arranged on the supporting frame and used for driving the template to rotate. The method has the effect of improving the forming effect of the concrete in the creeping formwork construction process.

Description

Technical Field

[0001] The present application relates to the field of high pier construction technology, and in particular to a climbing formwork structure. Background Art

[0002] Climbing formwork is the abbreviation of climbing formwork. It consists of climbing formwork, climbing frame and climbing equipment. It is an effective tool in the construction of high-rise structures such as shear wall system, cylinder system and bridge pier. Because of its self-climbing ability, it does not need to be hoisted by lifting machinery, which reduces the lifting workload of transportation machinery during construction, speeds up construction, and thus has better economic benefits.

[0003] At present, when the climbing formwork rises layer by layer with the construction of high pier structure, in order to reduce the huge friction caused by the contact between the formwork and the concrete surface, make the formwork easy to rise, and reduce the damage to the concrete surface during the rising process of the formwork, it is usually necessary to first move the entire formwork away from the concrete surface before lifting the formwork.

[0004] However, after the concrete is poured, the concrete fits tightly to the formwork, and the adsorption force between the formwork and the concrete is relatively large. Therefore, when driving the entire formwork away from the concrete surface, it is still necessary to overcome the large adsorption force between the formwork and the concrete surface, and thus a large driving force is required to drive the entire formwork away from the concrete surface. The large driving force can easily cause the formwork to deform and become damaged, and the concrete that is tightly attached to the formwork can easily detach from the formwork, affecting the forming effect of the concrete. Summary of the invention

[0005] In order to improve the forming effect of concrete during the climbing formwork construction process, the present application provides a climbing formwork structure.

[0006] A climbing formwork structure provided in this application adopts the following technical solution: A climbing formwork structure comprises a guide rail, a support frame, a positioning assembly, a lifting mechanism, a demolding mechanism and a formwork, wherein the guide rail is vertically slidably arranged on a concrete structure, the support frame is slidably arranged on the guide rail, the positioning assembly is arranged on the concrete structure and is used to position the guide rail and the support frame, the lifting mechanism is arranged on the guide rail and is used to drive the support frame to lift; the demolding mechanism is arranged on the support frame and is used to drive the formwork away from or close to the concrete structure, the demolding mechanism comprises a slide seat, a first driving member and a second driving member, the slide seat is slidably arranged on the support frame in a direction toward the concrete structure, the formwork is hingedly arranged on the slide seat in a direction toward the concrete structure, the first driving member is arranged on the support frame and is used to drive the slide seat to slide, and the second driving member is arranged on the support frame and is used to drive the formwork to rotate.

[0007] By adopting the above technical scheme, after the concrete pouring is completed and the upper layer of steel bars are tied, the construction personnel first drive the template to rotate in the direction away from the concrete structure through the second driving member, and then drive the slide to drive the template to move in the direction away from the concrete structure through the first driving member, so that the template can be detached from the concrete structure. Then the construction personnel release the positioning of the guide rail by the positioning component, lift the guide rail to the newly poured concrete structure, position the guide rail through the positioning component, and then release the positioning of the support frame by the positioning component, lift the support frame through the lifting mechanism, and then position the support frame through the positioning component to complete one lifting. By first rotating the template away from the concrete structure, air enters between the template and the concrete structure, reducing the adsorption force between the template and the concrete structure, and at the same time, the force driving the template to leave the concrete structure is dispersed in the directions perpendicular to and parallel to the template, reducing the driving force required to drive the template away from the concrete structure, thereby reducing the deformation caused when the template is separated from the concrete structure, reducing the possibility of the concrete structure being separated together with the template, and effectively improving the forming effect of concrete during the climbing formwork construction process.

[0008] Optionally, the first driving member includes a rack, a gear and a driving motor, the rack is arranged on the support frame along the sliding direction of the slide, the gear is rotatably arranged on the slide, and the driving motor is arranged on the slide and coaxially connected with the gear.

[0009] By adopting the above technical solution, the drive motor is started, and the output shaft of the drive motor drives the gear to rotate, and the gear can move on the rack, thereby driving the slide to slide in a direction away from or close to the concrete structure.

[0010] Optionally, the second driving member includes a transmission wheel, which is coaxially arranged on the hinge shaft of the template, the transmission wheel is meshed with the gear, and the number of teeth on the transmission wheel is greater than the number of teeth on the gear.

[0011] By adopting the above technical solution, when the gear rotates, it drives the transmission wheel to rotate, and the transmission wheel drives the hinge shaft of the template to rotate to drive the template to rotate away from the concrete structure. The gear with a smaller number of teeth drives the transmission wheel with a larger number of teeth to rotate, thereby increasing the torque and facilitating driving the template to rotate away from the concrete structure.

[0012] Optionally, an idle travel groove is provided on the gear, and the idle travel groove is used to allow the gear and the rack to idle in the initial stage of rotation of the template in the direction away from the concrete structure.

[0013] By adopting the above technical solution, in the initial stage of the template rotating in the direction away from the concrete structure, the idle travel groove on the gear cooperates with the rack to rotate idly, and at the same time the gear drives the transmission wheel to rotate, so that the template is first rotated away from the concrete structure, and then the gear rotates to engage with the rack, and then drives the slide to drive the template away from the concrete structure, ensuring the demolding process of first reducing the adsorption force between the template and the concrete structure and then detaching the template away from the concrete structure.

[0014] Optionally, the sliding seat is provided with an inclined support rod for supporting the template, the inclined support rod includes a support sleeve, a sliding rod and a locking assembly, the support sleeve is hingedly provided on the sliding seat, the sliding rod is slidably inserted in the support sleeve and hinged to the template, and the locking assembly is provided on the support sleeve and is used to drive the sliding rod to slide in the support sleeve only in one direction of approaching or moving away from the support sleeve.

[0015] By adopting the above technical solution, when the formwork rotates in the direction away from the concrete structure, the construction personnel can drive the slide bar in the support sleeve to slide only in the direction close to the support sleeve through the locking assembly. During the rotation of the formwork, the slide bar can be driven to move in the direction close to the support sleeve. After the rotation of the formwork is completed, the locking assembly is used to drive the slide bar in the support sleeve to slide only in the direction away from the support sleeve. At this time, the slide bar and the support sleeve can support the formwork, thereby improving the stability of the formwork.

[0016] Optionally, the locking assembly includes a spring block, a locking spring and a recovery piece. Two receiving grooves are provided on the inner wall of the support sleeve. The spring block is hingedly provided on the inner wall of one of the receiving grooves. The two spring blocks are in opposite directions. The locking spring is provided on the inner wall of the receiving groove and is used to drive the spring block away from the inner wall of the support sleeve. A plurality of stop grooves for the spring block to be inserted are provided at intervals on the slide rod. The recovery piece is provided on the support sleeve and is used to drive the spring block to rotate into the receiving groove.

[0017] By adopting the above technical solution, the construction personnel drive one of the spring blocks to rotate into the receiving groove through the recovery part, and the other spring block is moved away from the inner wall of the support sleeve and extends out of the receiving groove under the action of the locking spring. At this time, the spring block abuts against the side wall of the receiving groove and can only rotate in the direction close to the bottom wall of the receiving groove, so that the slide bar can only slide in the direction of driving the spring block toward the bottom wall of the receiving groove. When the slide bar tends to move in the opposite direction, the spring block abuts against the side wall of the stop groove to lock the slide bar, so that the slide bar can continue to support the template during the process of template rotation and mold closing, thereby improving the stability and safety of the template during rotation.

[0018] Optionally, the positioning assembly includes an embedded part, a load-bearing seat and a latch, the embedded part is pre-embedded in the concrete structure, the load-bearing seat is set on the embedded part, the guide rail is slidably set on the load-bearing seat, the latch is slidably inserted on the guide rail and inserted on the load-bearing seat, and the support frame is latched on the load-bearing seat.

[0019] By adopting the above technical solution, the construction workers will pre-embed the embedded parts in the concrete structure, and then install the load-bearing seat on the embedded parts. After the guide rail is lifted, the pin is inserted into the guide rail and clamped on the load-bearing seat, so that the guide rail can be positioned quickly and conveniently. After the support frame is lifted, the support frame is clamped on the load-bearing seat, and the support frame can be positioned quickly and conveniently.

[0020] Optionally, the lifting mechanism includes a hydraulic cylinder and a reversing box, wherein one reversing box is respectively provided at both ends of the hydraulic cylinder, and the reversing box is slidably provided on a guide rail and is used to position the hydraulic cylinder on the guide rail.

[0021] By adopting the above technical scheme, after lifting the guide rail, the construction personnel position the hydraulic cylinder on the guide rail through the reversing box at the lower end of the hydraulic cylinder, and then drive the piston rod of the hydraulic cylinder to extend, so that the support frame can be lifted for a stroke, and then the hydraulic cylinder is positioned on the guide rail through the reversing box at the upper end of the hydraulic cylinder to support the lifted support frame, and then the reversing box at the lower end of the hydraulic cylinder is released from the guide rail, the piston rod of the hydraulic cylinder is retracted, and the hydraulic cylinder is driven to drive the reversing box at the lower end to move upward, and then the reversing box at the lower end of the hydraulic cylinder is positioned on the guide rail, and the reversing box at the upper end of the hydraulic cylinder is released from the guide rail to carry out the next lifting, and this reciprocating process is repeated to lift the support frame to the next construction position.

[0022] Optionally, the reversing box includes a box body, a load-bearing tongue, a ratchet, a pawl, a reversing spring and a control member, the box body is arranged on the hydraulic cylinder and slidably arranged on a guide rail, the load-bearing tongue is hingedly arranged on the box body, and a plurality of blocks for abutting against the load-bearing tongue are arranged at intervals on the guide rail, two ratchets are coaxially arranged on the hinge shaft of the load-bearing tongue, and the two ratchets are in opposite directions, two pawls are hingedly arranged on the box body, and the two pawls abut against the two ratchets respectively, the reversing spring is arranged on the box body and is used to drive the pawl to abut against the ratchet, and the control member is arranged on the box body and is used to drive one of the pawls away from the ratchet.

[0023] By adopting the above technical scheme, the construction personnel drive one of the pawls away from the ratchet through the control part to release the restriction on the rotation direction of the ratchet. At this time, the other pawl abuts against the other ratchet under the action of the reversing spring, so that the other ratchet can only rotate in the direction close to the reversing spring, and then the guide rail can only drive the block to abut against the load-bearing tongue relative to the box body to drive the pawl to rotate in the direction close to the reversing spring. Through the abutment between the load-bearing tongue and the block, the direction in which the guide rail and the hydraulic cylinder can move relative to each other can be limited, and the hydraulic cylinder can be positioned on the guide rail, so as to facilitate the continuous lifting of the support frame. By switching different pawls to abut against different ratchets, the direction in which the guide rail and the hydraulic cylinder can move relative to each other can be switched, thereby realizing the switching between guide rail lifting and support frame lifting.

[0024] Optionally, the control component includes a control motor and a cam block, the control motor is arranged on the box body, the cam block is coaxially arranged on the output shaft of the control motor, and the cam block is used to push the pawl away from the ratchet wheel.

[0025] By adopting the above technical solution, the construction personnel drive the cam block to rotate by controlling the output shaft of the motor, and the protruding end of the cam block can abut against the pawl to push the pawl away from the ratchet wheel.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Reduce the driving force required to drive the formwork away from the concrete structure, thereby reducing the deformation caused by the formwork detaching from the concrete structure, reducing the possibility of the concrete structure detaching along with the formwork, and effectively improving the concrete forming effect during the climbing formwork construction process; 2. When the gear rotates, it drives the transmission wheel to rotate, and the transmission wheel drives the hinge shaft of the template to rotate to drive the template away from the concrete structure. The gear with a smaller number of teeth drives the transmission wheel with a larger number of teeth to rotate, thereby increasing the torque and facilitating the template to be driven away from the concrete structure. 3. During the rotation of the template, the sliding rod can be driven to move in the direction close to the support sleeve. After the rotation of the template is completed, the locking assembly can drive the sliding rod to slide in the support sleeve only in the direction away from the support sleeve. At this time, the sliding rod and the support sleeve can support the template and improve the stability of the template. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the climbing formwork structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structure of the positioning assembly, guide rail and support frame of an embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram of the demoulding mechanism of an embodiment of the present application.

[0030] Figure 4 yes Figure 3 Enlarged schematic diagram of part A.

[0031] Figure 5 It is a schematic diagram of the structure of the diagonal brace of an embodiment of the present application.

[0032] Figure 6 It is a structural schematic diagram of the lifting mechanism of an embodiment of the present application.

[0033] Figure 7 It is a schematic diagram of the structure of the reversing box of an embodiment of the present application.

[0034] Figure numerals: 1, guide rail; 2, support frame; 3, positioning assembly; 31, embedded parts; 32, load-bearing seat; 33, latch; 4, lifting mechanism; 41, hydraulic cylinder; 42, reversing box; 421, box body; 422, load-bearing tongue; 423, ratchet; 424, pawl; 425, reversing spring; 426, control member; 4261, control motor; 4262, cam block; 5, demoulding mechanism; 51, Slide seat; 52, first driving member; 521, rack; 522, gear; 5221, idle travel groove; 523, driving motor; 53, second driving member; 531, transmission wheel; 6, template; 7, diagonal support rod; 71, support sleeve; 711, receiving groove; 72, slide rod; 721, stop groove; 73, locking assembly; 731, spring block; 732, locking spring; 733, recovery member; 8, clamping block. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The embodiment of the present application discloses a climbing formwork structure.

[0037] Reference Figure 1 The climbing formwork structure includes a guide rail 1, a support frame 2, a positioning assembly 3, a lifting mechanism 4, a demolding mechanism 5, a template 6 and a diagonal support rod 7.

[0038] Reference Figure 1 The guide rail 1 is slidably installed on the concrete structure along the vertical direction, and the support frame 2 is slidably installed on the guide rail 1 along the length direction of the guide rail 1. In this embodiment, a plurality of support feet are threadedly installed on the side of the guide rail 1 and the support frame 2 close to the concrete structure. The construction personnel screw the support feet so that the support feet are against the concrete structure, and the support feet can support the guide rail 1 and the support frame 2 to improve the stability of the guide rail 1 shell and the support frame 2; and in this embodiment, the support frame 2 is formed with a hanging platform, a control platform, a main platform and a pouring platform, which is convenient for the construction personnel to be located on different platforms for different construction operations during the construction process.

[0039] Reference Figure 1 , Figure 2 The positioning component 3 is installed on the concrete structure. The positioning component 3 is used to position the guide rail 1 and the support frame 2 on the concrete structure. The positioning component 3 includes an embedded part 31, a load-bearing seat 32 and a pin 33. In the present embodiment, the embedded part 31 includes a climbing cone and a screw. The climbing cone is pre-embedded and installed in the concrete structure. The screw is threadedly connected to the climbing cone. The load-bearing seat 32 is slidably sleeved on the screw along the length direction of the screw. A nut is threadedly installed on the screw to position the load-bearing seat 32; the guide rail 1 is slidably penetrated on the load-bearing seat 32, and the pin 33 is slidably inserted on the load-bearing seat 32. A through hole for inserting the pin 33 is reserved on the guide rail 1; a fixture that is inserted into the load-bearing seat 32 from above is formed on the support frame 2, and a pin is horizontally inserted on the fixture. The pin is inserted into the load-bearing seat 32 to position the support frame 2.

[0040] The construction workers pre-embed the embedded part 31 into the concrete structure. After the guide rail 1 is lifted, the pin 33 is inserted into the load-bearing seat 32, and the pin 33 is passed through the through-hole on the guide rail 1. The guide rail 1 can be locked on the load-bearing seat 32 through the pin 33, and the guide rail 1 can be positioned on the concrete structure conveniently and quickly; after the support frame 2 is lifted, the construction workers insert the clamp on the support frame 2 into the load-bearing seat 32, and pass the pin horizontally through the clamp and insert it into the load-bearing seat 32, so that the support frame 2 can be positioned conveniently and quickly.

[0041] Reference Figure 1 , Figure 3, the demoulding mechanism 5 is installed on the support frame 2, and the demoulding mechanism 5 is used to drive the template 6 away from or close to the concrete structure. The demoulding mechanism 5 includes a slide 51, a first driving member 52 and a second driving member 53. The slide 51 is slidably installed on the support frame 2 in a direction perpendicular to the concrete structure, and the template 6 is vertically hingedly installed on the slide 51 at one end close to the concrete structure in the direction toward the concrete structure; the first driving member 52 is installed on the support frame 2, and the first driving member 52 is used to drive the slide 51 to slide. The first driving member 52 includes a rack 521, a gear 522 and a driving motor 523. The rack 521 is installed on the support frame 2 along the sliding direction of the slide 51, and the gear 522 is rotatably installed on the slide 51. The gear 522 is meshed with the rack 521, and the driving motor 523 is installed on the slide 51. The output shaft of the driving motor 523 is connected to the support frame 2. The gear 522 is coaxially connected. In the present embodiment, a stop pin is installed on the slide 51 so as to slide in the direction of the gear 522. After the driving motor 523 drives the gear 522 to rotate and drives the slide 51 to move into place, the construction personnel push the stop pin so that the stop pin is stuck on the gear 522, thereby locking the gear 522, improving the stability of the gear 522, reducing the locking pressure of the output shaft of the driving motor 523, and improving the stability of the template 6; the second driving member 53 is installed on the slide 51, and the second driving member 53 is used to drive the template 6 to rotate. The second driving member 53 includes a transmission wheel 531, which is coaxially installed on the hinge shaft of the template 6, and the transmission wheel 531 is meshed with the gear 522. The diameter of the transmission wheel 531 is larger than the diameter of the gear 522, so that the number of teeth on the transmission wheel 531 is larger than the number of teeth on the gear 522.

[0042] The construction personnel start the driving motor 523, and the output shaft of the driving motor 523 drives the gear 522 to rotate. The gear 522 moves on the rack 521, which can drive the slide 51 to drive the template 6 to move in the direction of the steel bars of the concrete structure to be poured. During the rotation of the gear 522, the transmission wheel 531 is driven to rotate, so that the transmission wheel 531 drives the template 6 to rotate in the direction of the steel bars of the concrete structure to be poured, so that the template 6 can be molded; after the poured concrete reaches the set strength, the construction personnel start the driving motor 523, and the output shaft of the driving motor 523 drives the gear 522 to rotate in the opposite direction, and the gear 522 drives the transmission wheel 531 to rotate in the opposite direction, so that the template 6 can be driven to rotate in the direction away from the concrete structure, and at the same time, the gear 522 drives the transmission wheel 531 to rotate in the opposite direction. The movable slide 51 moves in the opposite direction away from the concrete structure, thereby realizing the detachment of the formwork 6 from the concrete structure, and the larger transmission wheel 531 is driven to rotate by the smaller gear 522, thereby increasing the torque and reducing the driving force required to drive the formwork 6 away from the concrete structure. During the process of the formwork 6 turning away from the concrete structure, the force will be dispersed in two directions perpendicular to the formwork 6 and parallel to the formwork 6, and at the same time, air will enter between the formwork 6 and the concrete structure, reducing the adsorption force between the formwork 6 and the concrete structure, and jointly reducing the driving force required to drive the formwork 6 away from the concrete structure, reducing the deformation generated when the formwork 6 is separated from the concrete structure, and reducing the possibility of the concrete structure being separated together with the formwork 6, thereby effectively improving the forming effect of the concrete during the climbing formwork construction process.

[0043] Reference Figure 3 , Figure 4 , the gear 522 is provided with an idle travel groove 5221, and when the template 6 is attached to the concrete structure, the teeth on the rack 521 are located in the idle travel groove 5221 of the gear 522. In the initial stage of the template 6 rotating in the direction away from the concrete structure, the gear 522 rotates so that the teeth on the rack 521 are first in the idle travel groove 5221, and the gear 522 drives the transmission wheel 531 to rotate, so that the template 6 is first rotated away from the concrete structure. As the gear 522 continues to rotate, the teeth on the gear 522 mesh with the rack 521, and then the slide 51 drives the template 6 to move in the direction away from the concrete structure, ensuring that the template 6 is first rotated away from the concrete structure, so that air enters between the template 6 and the concrete structure, and then the slide 51 pulls the template 6 to move in the direction perpendicular to the concrete structure, ensuring the demolding process of first reducing the adsorption force between the template 6 and the concrete structure and then detaching the template 6 away from the concrete structure.

[0044] Reference Figure 1 , Figure 5The locking member 73 is a spring 731, a locking spring 732 and a recovery member 733. Two accommodating grooves 711 are provided on the inner wall of the support sleeve 71 along the sliding direction of the slide rod 72. The accommodating grooves 711 are provided in each accommodating groove 711. The lock member 720 of the embodiment of the present invention is a lock member 721, a lock member 722 is provided on the top of the lock member 724, and a lock member 723 is provided on the top of the lock member 724. The lock member 723 is provided on the bottom of the lock member 724, and a lock member 723 is provided on the top of the lock member 724.

[0045] Before driving the template 6 to rotate in the direction away from the concrete structure, the construction personnel first pull one of the pull ropes so that the pull rope pulls the spring block 731 rotating in the direction away from the inner bottom wall of the support sleeve 71 into the receiving groove 711, and then winds the pull rope around the control rod to position the spring block 731. At this time, the other spring block 731 rotates in the direction away from the bottom wall of the receiving groove 711 under the action of the locking spring 732 and rotates out of the receiving groove 711. When the template 6 rotates in the direction away from the concrete, the sliding rod is driven When the locking cam 731 is in the unlocking state, the locking cam 732 is in the unlocking state, and ... When the side walls of the groove 711 and the stop groove 721 abut against each other, the sliding rod 72 can be locked, so that the diagonal brace rod 7 can stably support the template 6; when the template 6 rotates in the direction close to the concrete structure to close the mold, the construction personnel will put the spring block 731 rotating in the direction away from the bottom wall of the support sleeve 71 into the receiving groove 711, and the spring block 731 rotating in the direction close to the inner bottom wall of the support sleeve 71 will pop out from the receiving groove 711 and enter the stop groove 721 under the action of the locking spring 732. The spring block 731 abuts against the side walls of the accommodating groove 711 and the stopping groove 721, which can limit the movement of the slide rod 72 in the direction close to the support sleeve 71. After the template 6 is rotated to the mold closing position, the spring block 731 that rotates in the direction away from the bottom wall of the support sleeve 71 is released from the accommodating groove 71, which can limit the movement of the slide rod 72 in the direction away from the support sleeve 71, thereby making the slide rod 72 and the support sleeve 71 firmly support the template 6, effectively improving the stability and safety of the template 6 during the rotation and adjustment process.

[0046] Reference Figure 1 , Figure 6 , the lifting mechanism 4 is installed on the guide rail 1, and the lifting mechanism 4 is used to drive the support frame 2 to lift. The lifting mechanism 4 includes a hydraulic cylinder 41 and a reversing box 42. The reversing box 42 is installed at both ends of the hydraulic cylinder 41. The reversing box 42 slides on the guide rail 1. The reversing box 42 is used to vertically position the hydraulic cylinder 41 on the guide rail 1. The reversing box 42 at the upper end of the hydraulic cylinder 41 is connected to the support frame 2; combined Figure 7The reversing box 42 includes a box body 421, a load-bearing tongue 422, a ratchet 423, a pawl 424, a reversing spring 425 and a control member 426. The box body 421 is slidably mounted on the guide rail 1, and the load-bearing tongue 422 is hingedly mounted on the box body 421. A plurality of blocks 8 are installed on the guide rail 1 at intervals along the length direction of the guide rail 1. The blocks 8 are used to abut against the load-bearing tongue 422. Two ratchets 423 are coaxially arranged on the hinge shaft of the load-bearing tongue 422. The directions of the two ratchets 423 are opposite. Two pawls 424 are hingedly mounted on the box body 421. The two pawls 424 abut against the two ratchets 423 one by one. The reversing spring 425 is installed on the box body 421. Two reversing springs 425 are respectively connected to the two pawls 424 in one-to-one correspondence, and the reversing springs 425 always have the tendency to drive the pawls 424 to abut against the ratchet 423; the control member 426 is installed on the box body 421, and the control member 426 is used to drive one of the pawls 424 away from the ratchet 423. The control member 426 includes a control motor 4261 and a cam block 4262. The control motor 4261 is installed on the box body 421, and the cam block 4262 is eccentrically installed on the output shaft of the control motor 4261. The protruding end of the cam block 4262 away from the output shaft of the control motor 4261 is used to push one of the pawls 424 away from the ratchet 423.

[0047] When it is necessary to lift the guide rail 1, the construction personnel start the control motor 4261 of the reversing box 42 at the upper and lower ends of the hydraulic cylinder 41, so that the control motor 4261 drives the cam block 4262 to rotate, and the cam block 4262 will limit the load-bearing tongue 422 to rotate in the lifting direction of the support frame 2. The pawl 424 on the ratchet 423 pushes away from the ratchet 423. At this time, the other pawl 424 is abutted against the ratchet 423 that limits the load-bearing tongue 422 from rotating in the lifting direction away from the support frame 2 under the action of the reversing spring 425. The load-bearing tongue 422 can only rotate in the lifting direction of the support frame 2. The construction personnel can lift the guide rail 1 through the lifting equipment. After lifting and positioning the guide rail 1, the construction personnel start the reversing box under the hydraulic cylinder 41. The control motor 4261 of 42, the output shaft of the control motor 4261 drives the protruding end of the cam block 4262 to rotate between the two pawls 424, and the two pawls 424 are respectively abutted on the two ratchet wheels 423 under the action of the reversing spring 425, so that the hinge shaft of the load-bearing tongue 422 can be locked, and then the load-bearing tongue 422 is locked, and the load-bearing tongue 422 abuts on the guide rail 1, thereby positioning the lower part of the hydraulic cylinder 41 on the guide rail 1, and then the control motor 4261 of the reversing box 42 above the hydraulic cylinder 41 is started, so that the cam block 4262 will limit the load-bearing tongue 422 from rotating in the lifting direction away from the support frame 2. The pawl 424 on the ratchet 423 is abutted away from the ratchet 423, and at this time, the load-bearing tongue 422 can only rotate toward the support frame 2. The construction personnel control the piston rod of the hydraulic cylinder 41 to extend, and the support frame 2 can be lifted. After lifting to the maximum stroke of the hydraulic cylinder 41, the control motor 4261 of the reversing box 42 above the hydraulic cylinder 41 is started, so that the protruding end of the cam block 4262 rotates between the two ratchet claws 424, so that the load-bearing tongue 422 above the hydraulic cylinder 41 is locked, and then the upper part of the hydraulic cylinder 41 is positioned on the guide rail 1, and then the control motor 4261 of the reversing box 42 below the hydraulic cylinder 41 is controlled to start, so that the cam block 4262 will limit the load-bearing tongue 422 from rotating in the lifting direction away from the support frame 2. The ratchet 424 on the ratchet 423 pushes away from the ratchet 423, and the load-bearing tongue 422 can only move toward the support frame 2 is rotated in the lifting direction, and the construction personnel can control the piston rod of the hydraulic cylinder 41 to retract, so that the hydraulic cylinder 41 moves up relative to the guide rail 1, and the lifting of the support frame 2 with the maximum stroke of the hydraulic cylinder 41 can be completed, and then the lower part of the hydraulic cylinder 41 is positioned on the guide rail 1, and the next hydraulic cylinder 41 lifts the support frame 2, and in this reciprocating manner, the support frame 2 can be conveniently and quickly continuously lifted to the next construction position, and during the lifting process, by locking the load-bearing tongue 422, the construction personnel switch different ratchets 424 to abut against the ratchet 423, and can also conveniently switch the direction in which the guide rail 1 and the hydraulic cylinder 41 can move relative to each other, so that the hydraulic cylinder 41 is locked on the guide rail 1, thereby ensuring the safety of the hydraulic cylinder 41 in the process of lifting the support frame 2.

[0048] The implementation principle of a climbing formwork structure in an embodiment of the present application is as follows: after the concrete pouring is completed and the upper layer of steel bars are tied, the construction personnel start the drive motor 523, the drive motor 523 drives the gear 522 to rotate, the gear 522 drives the transmission wheel 531 to rotate, first causing the formwork 6 to rotate in a direction away from the concrete structure, so that air enters between the formwork 6 and the concrete structure, reducing the adsorption force between the formwork 6 and the concrete structure, and then driving the formwork 6 away from the concrete structure, and then the construction personnel release the positioning of the guide rail 1 on the load-bearing seat 32, lift the guide rail 1, and then position the guide rail 1 to the load-bearing seat 32 on the newly poured concrete structure, and then release the positioning of the support frame 2 on the load-bearing seat 32, through the reversing box 42 locks the hydraulic cylinder 41 on the guide rail 1, gradually lifts the support frame 2, and lifts the formwork 6 to the next construction section. When performing mold pouring and concrete construction, the formwork 6 is first turned away from the concrete structure during the demolding process, so that air enters between the formwork 6 and the concrete structure, thereby reducing the adsorption force between the formwork 6 and the concrete structure. At the same time, the force driving the formwork 6 to leave the concrete structure is dispersed in the directions perpendicular to and parallel to the formwork 6, thereby reducing the driving force required to drive the formwork 6 away from the concrete structure, thereby reducing the deformation caused by the formwork 6 leaving the concrete structure, reducing the possibility of the concrete structure leaving together with the formwork 6, and effectively improving the forming effect of the concrete during the climbing formwork construction.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A climbing formwork structure, characterized in that: The invention comprises a guide rail (1), a support frame (2), a positioning assembly (3), a lifting mechanism (4), a demolding mechanism (5) and a template (6), wherein the guide rail (1) is vertically slidably arranged on a concrete structure, the support frame (2) is slidably arranged on the guide rail (1), the positioning assembly (3) is arranged on the concrete structure and is used to position the guide rail (1) and the support frame (2), the lifting mechanism (4) is arranged on the guide rail (1) and is used to drive the support frame (2) to be lifted; the demolding mechanism (5) is arranged on the support frame (2) and is used to drive the template (6) to be lifted. 6) away from or close to the concrete structure, the demoulding mechanism (5) comprises a slide (51), a first driving member (52) and a second driving member (53), the slide (51) being slidably arranged on the support frame (2) in a direction toward the concrete structure, the formwork (6) being hingedly arranged on the slide (51) in a direction toward the concrete structure, the first driving member (52) being arranged on the support frame (2) and being used to drive the slide (51) to slide, and the second driving member (53) being arranged on the support frame (2) and being used to drive the formwork (6) to rotate.

2. A climbing formwork structure according to claim 1, characterized in that: The first driving member (52) comprises a rack (521), a gear (522) and a driving motor (523); the rack (521) is arranged on the support frame (2) along the sliding direction of the slide seat (51); the gear (522) is rotatably arranged on the slide seat (51); and the driving motor (523) is arranged on the slide seat (51) and is coaxially connected to the gear (522).

3. A climbing formwork structure according to claim 2, characterized in that: The second driving member (53) comprises a transmission wheel (531), the transmission wheel (531) being coaxially arranged on the hinge shaft of the template (6), the transmission wheel (531) being meshed with the gear (522), and the number of teeth of the transmission wheel (531) being greater than the number of teeth of the gear (522).

4. A climbing formwork structure according to claim 2, characterized in that: An idle stroke groove (5221) is provided on the gear (522), and the idle stroke groove (5221) is used to allow the gear (522) and the rack (521) to rotate idly in the initial stage when the template (6) rotates in a direction away from the concrete structure.

5. A climbing formwork structure according to claim 1, characterized in that: The slide seat (51) is provided with an oblique support rod (7) for supporting the template (6), the oblique support rod (7) comprising a support sleeve (71), a slide rod (72) and a locking assembly (73), the support sleeve (71) being hingedly arranged on the slide seat (51), the slide rod (72) being slidably inserted in the support sleeve (71) and being hingedly arranged on the template (6), the locking assembly (73) being arranged on the support sleeve (71) and being used to drive the slide rod (72) to slide in the support sleeve (71) in only one direction, that is, towards or away from the support sleeve (71).

6. A climbing formwork structure according to claim 5, characterized in that: The locking assembly (73) comprises a spring block (731), a locking spring (732) and a recovery member (733); two receiving grooves (711) are provided on the inner wall of the support sleeve (71); one of the spring blocks (731) is hingedly provided on the inner wall of one of the receiving grooves (711); the two spring blocks (731) are in opposite directions; the locking spring (732) is provided on the inner wall of the receiving groove (711) and is used to drive the spring block (731) away from the inner wall of the support sleeve (71); a plurality of stop grooves (721) for the spring block (731) to be inserted into are provided at intervals on the slide bar (72); and the recovery member (733) is provided on the support sleeve (71) and is used to drive the spring block (731) to rotate into the receiving groove (711).

7. A climbing formwork structure according to claim 1, characterized in that: The positioning assembly (3) comprises an embedded part (31), a load-bearing seat (32) and a latch (33); the embedded part (31) is pre-embedded in a concrete structure; the load-bearing seat (32) is arranged on the embedded part (31); the guide rail (1) is slidably arranged on the load-bearing seat (32); the latch (33) is slidably inserted on the guide rail (1) and inserted on the load-bearing seat (32); and the support frame (2) is latched on the load-bearing seat (32).

8. A climbing formwork structure according to claim 1, characterized in that: The lifting mechanism (4) comprises a hydraulic cylinder (41) and a reversing box (42), wherein one reversing box (42) is respectively provided at both ends of the hydraulic cylinder (41), and the reversing box (42) is slidably arranged on the guide rail (1) and is used to position the hydraulic cylinder (41) on the guide rail (1).

9. A climbing formwork structure according to claim 8, characterized in that: The reversing box (42) comprises a box body (421), a load-bearing tongue (422), a ratchet (423), a pawl (424), a reversing spring (425) and a control member (426); the box body (421) is arranged on the hydraulic cylinder (41) and is slidably arranged on the guide rail (1); the load-bearing tongue (422) is hingedly arranged on the box body (421); a plurality of blocks (8) for abutting against the load-bearing tongue (422) are arranged at intervals on the guide rail (1); the ratchet (423) is hingedly arranged on the load-bearing tongue (422); Two ratchet pawls (424) are coaxially arranged on the connecting shaft, and the directions of the two ratchet wheels (423) are opposite. Two ratchet pawls (424) are hingedly arranged on the box body (421), and the two ratchet pawls (424) respectively abut against the two ratchet wheels (423). The reversing spring (425) is arranged on the box body (421) and is used to drive the ratchet pawls (424) to abut against the ratchet wheels (423). The control member (426) is arranged on the box body (421) and is used to drive one of the ratchet pawls (424) away from the ratchet wheel (423).

10. A climbing formwork structure according to claim 9, characterized in that: The control member (426) comprises a control motor (4261) and a cam block (4262); the control motor (4261) is arranged on the box body (421); the cam block (4262) is coaxially arranged on the output shaft of the control motor (4261); and the cam block (4262) is used to push the pawl (424) away from the ratchet wheel (423).

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