Reversible diaphragm wall reinforcement cage pre-erection frame and construction method thereof

Abstract

This invention provides a reversible prefabricated frame for diaphragm wall reinforcement cages and its construction method. The frame includes a support frame with multiple reversible components near the edge of the middle section. One end of the support frame has a cantilever beam, and the other end has a connector and an anti-tipping head. The connector is connected to a pre-embedded hinge seat. A reinforcement positioning unit is also included, comprising a first toothed plate, a second toothed plate, and a third toothed plate. The first toothed plate is located on the support frame, and the second toothed plates are located on the reversible components. The tops of the multiple second toothed plates are connected by the third toothed plate. This invention has an ingenious structure, achieving a dual-purpose design, significantly improving the manufacturing efficiency of diaphragm wall reinforcement cages, and ensuring overall operational safety.

Description

Technical Field

[0001] This invention relates to the field of civil engineering construction technology, and in particular to a reversible precast diaphragm wall steel cage and its construction method. Background Technology

[0002] With the vigorous advancement of infrastructure development in my country, diaphragm walls are being applied in various fields such as bridges, hydraulic engineering, and municipal works. Currently, in the construction of diaphragm walls in my country, the rebar cage is often lifted and turned using two cranes, which is unsafe and requires embedding the load-bearing steel plate into the rebar cage, resulting in material waste. During the lifting process, the transverse rebars are subjected to stress, making it difficult to guarantee the quality of the rebar cage. Chinese patent document CN 212896312 U describes an auxiliary positioning device for lifting diaphragm wall rebar cages, but this structure is relatively simple, cannot guarantee the convenience of rebar cage fabrication, and has limitations in overall stress distribution, thus having defects in use and requiring improvement. Summary of the Invention

[0003] This invention provides a reversible precast steel cage frame for diaphragm walls and its construction method, which solves the problems of large material waste, low construction efficiency and difficult operation caused by using horizontal steel bars as stress points in the traditional steel cage hoisting process.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a reversible precast frame for diaphragm wall reinforcement cage, including a support frame, a plurality of reversible components are provided in the middle of the support frame near the edge, a cantilever beam is provided at one end of the support frame, and a connector and an anti-reversing head are provided at the other end of the support frame, and the connector is connected to a pre-embedded hinge seat.

[0005] It also includes a rebar positioning unit, which includes a first toothed plate, a second toothed plate and a third toothed plate. The first toothed plate is located on the support frame, the second toothed plate is located on the flipping assembly, and the tops of multiple second toothed plates are connected by the third toothed plate.

[0006] In a preferred embodiment, the support frame includes two frames in the vertical direction, which are connected by vertical rods. Two uprights are provided parallel to each other on the frames, and the two uprights are connected by multiple horizontal rods. Diagonal rods are also provided between the uprights and the horizontal rods. The cantilever beam is fixed to the side wall of the outermost horizontal rod. The connector and the anti-tipping head are respectively set on two uprights at different heights on the same side.

[0007] In a preferred embodiment, a second locking plate is provided on the upper upright, and a first locking plate is provided on the vertical rod on one side of the second locking plate. The flipping assembly includes a fixing rod, a first connector is provided at the bottom of the fixing rod, the first connector and the second locking plate are hinged by a pin, a first ear plate is provided parallel to one side of the fixing rod, a first through hole is provided on the first ear plate, and a through rod passes through the first through hole and the first locking plate.

[0008] In the preferred embodiment, the pre-embedded hinge seat includes a hinge joint, a load-bearing plate is provided at the bottom of the hinge joint, a self-locking unit is provided on the load-bearing plate, and a bayonet and a transition surface are provided on the anti-tipping head. The self-locking unit is used to lock the anti-tipping head.

[0009] In the preferred embodiment, the load-bearing plate is provided with a first through groove, the self-locking unit includes a straight plate, a plug is provided on one side of the straight plate, the plug is inserted into the first through groove, a clamping plate is provided in the middle of the bayonet, and a first inclined surface is provided on both sides of the clamping plate. A third through groove and a fourth through groove are provided vertically on the side of the straight plate away from the plug. A boss is provided on the lower side of the fourth through groove, a first locking hole is provided on the outer side of the boss, a guide hole is provided on the boss, two trigger blocks are slidably provided in the fourth through groove, the two trigger blocks cooperate to clamp the clamping plate, a spring is passed through the guide hole, the two ends of the spring are respectively fixed in the second locking hole of the trigger block, a second inclined surface is provided on the trigger block, the second inclined surface matches the first inclined surface, a recess is provided at the bottom of the trigger block, and a locking pin for limiting the trigger block is provided in the first locking hole.

[0010] In a preferred embodiment, a second through hole is provided parallel to the vertical rod, and a groove and a clearance opening are provided on the horizontal rod near the second through hole. A telescopic mechanism is slidably installed in the groove. The telescopic mechanism includes a base plate, and two round rods are provided on one side of the base plate. The round rods pass through the second through hole, and a sliding plate is provided at the end of the round rod. A drive rod is provided on one side of the sliding plate. The two ends of the drive rod are respectively provided with a first threaded part and a second threaded part. The first threaded part and the second threaded part are in opposite directions. A first slider and a second slider are respectively connected to the first threaded part and the second threaded part. The first slider and the second slider have the same structure. The width of the first slider and the second slider matches the width of the clearance opening. The flipping assembly is detachably hinged to the outside of the base plate. The flipping assembly is provided with a first ear plate with a first through hole. A second ear plate is provided on the base plate with a second through hole. A through rod passes through the first through hole and the second through hole. The flipping assembly is provided with a second toothed plate, and multiple second toothed plates are connected by a third toothed plate.

[0011] In the preferred embodiment, a reinforcing plate is provided between the two round rods, a second connector is provided on the outer side of the base plate, a fixing rod is provided on the flipping assembly, a first connector is provided at the bottom of the fixing rod, the first connector is hinged by a pin and a second connector, two first extension plates are provided on one side of the slide plate, a first through hole is provided in the first extension plate, the drive rod is rotatably set in the first through hole, a limiting ring is also provided on the first threaded part and the second threaded part, a vertical plate is connected to one side of the first slider and the second slider respectively by a partition, a horizontal plate and a fixing hole are provided on the vertical plate, a locking pin is passed through the fixing hole, an oval hole is provided on the vertical plate, a first threaded hole and a second threaded hole are respectively provided on the horizontal plate of the first slider and the second slider, the first threaded part and the second threaded part are threadedly connected to the first threaded hole and the second threaded hole respectively, a rubber layer is also provided on the first slider and the second slider, and multiple grooves are provided on the rubber layer.

[0012] In a preferred embodiment, the support frame is detachably equipped with a push-out mechanism, which includes multiple push plates connected by a synchronizing rod. One side of each push plate has a bend with an obtuse angle, and the other side of each push plate has a first branch plate and a second branch plate. The push plates are hinged to the support frame via a connecting rod. Abutment plates are hinged to the first and second branch plates, and the abutment plates are used to detach the steel cage from the support frame.

[0013] In the preferred embodiment, the push plate is provided with a first mounting hole and a second mounting hole, the synchronizing rod passes through the synchronizing rod, the vertical rod is provided with a first through hole, the connecting rod passes through the second mounting hole and the first through hole, the first branch plate and the second branch plate are provided with a second through hole, the second through hole is connected to a C-shaped plate by a pin, the C-shaped plate is provided with a third through hole and a connecting hole, and the abutment plate is connected by a locking pin and a connecting hole.

[0014] A construction method for a reversible precast steel cage for diaphragm walls includes the following steps:

[0015] S1. Fabricate and process each component according to the design drawings;

[0016] S2. Fix the embedded parts at the construction site and fix the pre-embedded hinge seat on the embedded parts;

[0017] S3. Fix the prefabricated steel cage frame to the embedded hinge seat, and after leveling it, install a pad at the other end away from the embedded hinge seat to ensure that the prefabricated steel cage frame is horizontal.

[0018] S4. Flip the entire flipping assembly upwards and insert the fixing rod for limit connection;

[0019] S5. Assemble various types of reinforcing bars sequentially on the precast steel cage frame, and install each reinforcing bar on the snap-fit ​​groove of the reinforcing bar positioning unit at different positions;

[0020] S6. After the steel cage is assembled, remove the fixing rod, flip the entire rotating assembly up and down, and install bolts at the corresponding positions on the support frame and the rotating assembly to fix the rotating assembly.

[0021] S7. Connect the longitudinal reinforcement bars at the top of the steel cage to the cantilever beam;

[0022] S8. Use the drive mechanism to connect the precast steel cage frame and slowly lift it. The lifting equipment connects the longitudinal steel bars of the steel cage. During the lifting process, the lifting equipment connecting the steel cage does not apply force. When the lifting equipment connecting the precast frame lifts the precast frame to the design angle, the lifting equipment connecting the steel cage applies lifting force. At this time, the connection between the precast frame and the steel cage is slowly loosened, and the connection between the precast frame and the longitudinal steel bars of the steel cage is released.

[0023] S9. The lifting equipment connecting the steel cage will hoist the steel cage to the slot in the diaphragm wall and lower the steel cage.

[0024] S10. The drive mechanism connecting the precast frame lowers the precast frame and removes the mounting bolts at the corresponding locations of the support frame and the flipping assembly.

[0025] S11. Repeat steps S4 to S9 until all steel cages are fabricated and hoisted.

[0026] The beneficial effects of this invention are as follows: the prefabricated frame also serves as a turning frame, realizing two uses in one. Multiple snap-fit ​​slots are set on the rebar positioning unit to ensure the assembly accuracy of the rebar cage and improve the quality of the rebar cage. Using the turning frame to lift the rebar cage can eliminate the need for the reinforcing steel plate inside the rebar cage, avoid the lifting operation of the rebar cage, save material consumption, and improve safety. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is the first structural schematic diagram of the present invention, state one;

[0029] Figure 2 This is the second schematic diagram of the first structure of the present invention;

[0030] Figure 3 This is a partial structural schematic diagram of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the flipping component of the present invention;

[0032] Figure 5 This is the third schematic diagram of the first structure of the present invention;

[0033] Figure 6 This is the fourth state of the first structural schematic diagram of the present invention;

[0034] Figure 7 This is the second structural schematic diagram of the present invention, state one;

[0035] Figure 8 yes Figure 7 A schematic diagram of the bottom view;

[0036] Figure 9 yes Figure 7 Rear view diagram;

[0037] Figure 10 yes Figure 7 A left-view diagram;

[0038] Figure 11 This is the second structural schematic diagram of the present invention, state two;

[0039] Figure 12 This is the third state of the second structural schematic diagram of the present invention;

[0040] Figure 13 This is the second structural schematic diagram of the present invention, state four;

[0041] Figure 14 yes Figure 13 Front view diagram;

[0042] Figure 15 yes Figure 7 A schematic diagram of the support frame structure;

[0043] Figure 16 yes Figure 7 Schematic diagram of the flip-up component installation telescopic structure, state one;

[0044] Figure 17 yes Figure 7 Schematic diagram of the flip-up component installation telescopic structure, state two;

[0045] Figure 18 yes Figure 16 Schematic diagram of the exploded structure, state one;

[0046] Figure 19 yes Figure 16 Schematic diagram of the explosion structure, state two;

[0047] Figure 20 yes Figure 7 A schematic diagram of the overall structure of the launching mechanism;

[0048] Figure 21 yes Figure 20 A schematic diagram of the pusher plate structure;

[0049] Figure 22 yes Figure 7 A schematic diagram of the support frame mounting self-locking unit structure;

[0050] Figure 23 yes Figure 22 A schematic diagram of the self-locking unit, connector, and anti-flip explosion structure;

[0051] Figure 24 yes Figure 7 A schematic diagram of the self-locking unit structure, state one;

[0052] Figure 25 yes Figure 7 The schematic diagram of the self-locking unit structure is shown in state two.

[0053] In the diagram: Support frame 1; Upright 101; Horizontal bar 102; Diagonal bar 103; First through hole 104; Second through hole 105; Slide groove 106; Clearance opening 107; First locking plate 108; Second locking plate 109; Vertical bar 110; Flip assembly 2; Fixed rod 201; First connector 202; First ear plate 203; First through hole 204; Through rod 205; Cantilever beam 3; Embedded hinge seat 4; Load-bearing plate 401; Hinge joint 402; First through groove 403; Reinforcing bar positioning Unit 5; First toothed plate 501; Second toothed plate 502; Third toothed plate 503; Snap-fit ​​groove 504; Telescopic mechanism 6; Base plate 601; Second connector 602; Round rod 603; Reinforcing plate 604; Slide plate 605; Drive rod 606; First slider 607; Second slider 608; Second ear plate 609; Second through hole 610; First extension plate 611; First through hole 612; First threaded part 613; Second threaded part 614; Vertical plate 615; Horizontal plate 61 6; Oval hole 617; Rubber layer 618; First threaded hole 619; Second threaded hole 620; Spacer 621; Groove 622; Limiting ring 623; Fixing hole 624; Pushing mechanism 7; Push plate 701; First branch plate 702; Second branch plate 703; Folded corner 704; First mounting hole 705; Second mounting hole 706; Second through hole 707; C-shaped plate 708; Third through hole 709; Connecting hole 710; Abutment plate 711; Synchronizing rod 712; Connecting rod 713; Connecting head 8; Anti-tipping head 9; Bayonet 901; Clamping plate 902; First inclined surface 903; Transition surface 904; Self-locking unit 10; Straight plate 1001; Plug 1002; Third through groove 1003; Fourth through groove 1004; First locking hole 1005; Boss 1006; Guide hole 1007; Trigger block 1008; Second locking hole 1009; Spring 1010; Second inclined surface 1011; Countersunk groove 1012; Pin 11; Locking nail 12. Detailed Implementation

[0054] like Figure 1-6 In the present invention, a prefabricated frame for a diaphragm wall steel cage that can be flipped includes a support frame 1, a plurality of flipping components 2 are provided in the middle of the support frame 1 near the edge, a cantilever beam 3 is provided at one end of the support frame 1, and a connector 8 and an anti-flipping head 9 are provided at the other end of the support frame 1. The connector 8 is connected to a pre-embedded hinge seat 4.

[0055] The system also includes a rebar positioning unit 5, which comprises a first toothed plate 501, a second toothed plate 502, and a third toothed plate 503. The first toothed plate 501 is located on the support frame 1, and the second toothed plates 502 are located on the flipping assembly 2. The tops of multiple second toothed plates 502 are connected by the third toothed plate 503. The first toothed plate 501, the second toothed plate 502, and the third toothed plate 503 are each provided with a snap-fit ​​groove 504 for fixing the rebar. The width of the snap-fit ​​groove 504 matches the diameter of the reinforcing bar. The support frame 1 is made of square tubing, which has strong load-bearing capacity, relatively light weight, and stable processing effect. This structure allows the support frame 1 to provide a bottom foundation. The first toothed plate 501, the second toothed plate 502, and the third toothed plate 503 cooperate to form a constraint range. The reinforcing bar is limited and locked by the snap-fit ​​groove 504. The flipping component 2 can adjust its position as needed to meet the switching between prefabrication and hoisting states. The cantilever beam 3 serves as a load-bearing structure during hoisting to fix the upper part of the reinforcing bar cage, ensuring that the reinforcing bar cage mainly bears the tensile force during the rotation of the prefabrication frame around the axis of the embedded hinge seat 4, ensuring overall stress stability and small overall deformation, thus avoiding the problem of reduced load-bearing capacity of the reinforcing bar cage.

[0056] In the preferred embodiment, the support frame 1 includes two vertical frames connected by vertical rods 110. Two uprights 101 are arranged parallel to each other on the frames, connected by multiple horizontal rods 102. Diagonal rods 103 are also provided between the uprights 101 and the horizontal rods 102. A cantilever beam 3 is fixed to the side wall of the outermost horizontal rod 102. A connector 8 and an anti-tipping head 9 are respectively installed on the two uprights 101 at different heights on the same side. This structure simplifies the fabrication of the support frame 1. The connector 8 is hinged to the pre-embedded hinge seat 4. After the support frame 1 rotates around the pre-embedded hinge seat to the designed angle, the anti-tipping head 9 and the ground foundation prevent further rotation of the support frame 1, providing solid support for subsequent hoisting.

[0057] In a preferred embodiment, a second locking plate 109 is provided on the upper upright 101, and a first locking plate 108 is provided on the vertical rod 110 on one side of the second locking plate 109. The flipping assembly 2 includes a fixing rod 201, with a first connector 202 at the bottom of the fixing rod 201. The first connector 202 and the second locking plate 109 are hinged together by a pin 11. A first ear plate 203 is provided parallel to one side of the fixing rod 201, and a first through hole 204 is provided on the first ear plate 203. A through rod 205 passes through the first through hole 204 and the first locking plate 108. This structure allows the position of the fixing rod 201 relative to the vertical rod 110 to be changed as needed, while ensuring a stable connection between the fixing rod 201 and the support frame 1.

[0058] like Figure 22In the preferred embodiment, the pre-embedded hinge seat 4 includes a hinge joint 402, a load-bearing plate 401 at the bottom of the hinge joint 402, a self-locking unit 10 on the load-bearing plate 401, and a latch 901 and a transition surface 904 on the anti-tipping head 9. The self-locking unit 10 is used to lock the anti-tipping head 9. This structure ensures that when the support frame 1 rotates to its position, the latch of the anti-tipping head 9 is captured by the self-locking unit 10. Under the influence of gravity, the anti-tipping head 9 tends to continue moving downwards. At this time, the transition surface 904 contacts the self-locking unit 10, thereby triggering the self-locking unit 10 to act, completing the capture of the anti-tipping head 9, and finally locking the anti-tipping head 9.

[0059] like Figure 23-25 In the preferred embodiment, the load-bearing plate 401 is provided with a first through groove 403. The self-locking unit 10 includes a straight plate 1001, with a plug 1002 on one side of the straight plate 1001. The plug 1002 is inserted into the first through groove 403. A locking plate 902 is provided in the middle of the bayonet 901. First inclined surfaces 903 are provided on both sides of the locking plate 902. A third through groove 1003 and a fourth through groove 1004 are vertically provided on the side of the straight plate 1001 away from the plug 1002. A boss 1006 is provided on the lower side of the fourth through groove 1004. A first locking hole 1005 is provided on the outer side of the boss 1006. The upper part is provided with a guide hole 1007, and two trigger blocks 1008 are slidably arranged in the fourth through groove 1004. The two trigger blocks 1008 cooperate to clamp the card plate 902. A spring 1010 is inserted in the guide hole 1007. The two ends of the spring 1010 are respectively fixed in the second locking hole 1009 of the trigger block 1008. The trigger block 1008 is provided with a second inclined surface 1011, which matches the first inclined surface 903. The bottom of the trigger block 1008 is provided with a recessed groove 1012. The first locking hole 1005 is provided with a locking pin 12 for limiting the trigger block 1008. The sidewall of the trigger block 1008 is provided with an increased friction layer. This structure allows the two trigger blocks 1008 to be pushed closer together when the transition surface 904 of the anti-tipping head 9 comes into contact with the trigger block 1008. As the locking plate 902 gradually contacts the bottom of the fourth through slot 1004 through the third through slot 1003, the trigger block 1008 clamps the locking plate 902, and the increased friction layer firmly locks the locking plate 902 by friction.

[0060] like Figure 7-16In a preferred embodiment, a second through hole 105 is provided parallel to the vertical rod 110. A groove 106 and a clearance opening 107 are provided on the horizontal rod 102 near the second through hole 105. A telescopic mechanism 6 is slidably installed in the groove 106. The telescopic mechanism 6 includes a base plate 601. Two round rods 603 are provided on one side of the base plate 601. The round rods 603 pass through the second through hole 105. A sliding plate 605 is provided at the end of the round rod 603. A drive rod 606 is provided on one side of the sliding plate 605. A first threaded portion 613 and a second threaded portion 614 are provided at both ends of the drive rod 606. The first threaded portion 613 and the second threaded portion 614 are in opposite directions. The first threaded portion 613 and the second threaded portion 614 are respectively provided with a first threaded portion 613 and a second threaded portion 614. The first slider 607 and the second slider 608 are connected separately. The first slider 607 and the second slider 608 have the same structure. The width of the first slider 607 and the second slider 608 matches the width of the clearance opening 107. The flipping assembly 2 is detachably hinged to the outside of the base plate 601. The flipping assembly 2 is provided with a first ear plate 203 and a first through hole 204. The base plate 601 is provided with a second ear plate 609 and a second through hole 610. The through rod 205 passes through the first through hole 204 and the second through hole 610. The flipping assembly 2 is provided with a second toothed plate 502. Multiple second toothed plates 502 are connected by a third toothed plate 503. This structure allows the center distance between the first slider 607 and the second slider 608 to be changed by rotating the drive rod 606. The crossbar 102 is made of square steel tubing, and the dimensions of the first slider 607 and the second slider 608 are smaller than the internal cavity dimensions of the square steel tubing. Therefore, when the center distance between the first slider 607 and the second slider 608 is large, that is, when the bottom of the first slider 607 and the top of the second slider 608 are not fully in contact with the cavity of the crossbar 102, the drive rod 606 can be pulled to change its position within the slide groove 106. When the first slider 607... When the center distance between the first slider 607 and the second slider 608 is small, and the bottom of the first slider 607 and the top of the second slider 608 are in full contact with the cavity of the crossbar 102, the first slider 607 and the second slider 608 cooperate with each other to form a clamping state, ensuring that it is fixed in the crossbar 102. The base plate 601 is limited and locked by force transmission. The position of the round rod 603 can be adjusted by the drive rod 606, thereby changing the position of the external flipping component 2 of the support frame 1. This ensures that steel cages within a certain width range can be quickly fabricated and tied, making it convenient to use and highly efficient.

[0061] like Figure 17-19In the preferred embodiment, a reinforcing plate 604 is provided between the two round rods 603, a second connector 602 is provided on the outer side of the base plate 601, a fixing rod 201 is provided on the flipping assembly 2, and a first connector 202 is provided at the bottom of the fixing rod 201. The first connector 202 is hinged to the second connector 602 by a pin 11. Two first extension plates 611 are provided on one side of the slide plate 605. A first through hole 612 is provided in the first extension plate 611. The drive rod 606 is rotatably disposed in the first through hole 612. A limiting ring 623 is also provided on the first threaded part 613 and the second threaded part 614. A vertical plate 615 is connected to one side of the first slider 607 and the second slider 608 respectively by a spacer 621. A horizontal plate 616 and a fixing hole 624 are provided on the vertical plate 615. A locking pin 12 passes through the fixing hole 624. The vertical plate 615 has an oblong hole 617. The horizontal plates 616 of the first slider 607 and the second slider 608 have a first threaded hole 619 and a second threaded hole 620, respectively. The first threaded portion 613 and the second threaded portion 614 are threadedly connected to the first threaded hole 619 and the second threaded hole 620, respectively. The first slider 607 and the second slider 608 also have a rubber layer 618, which has multiple grooves 622. This structure makes operation convenient. The position adjustment of the base plate 601 can be completed by simply adjusting the rotation direction of the drive rod 606, thus completing the limiting and disengagement of the flipping assembly 2.

[0062] like Figure 20 In a preferred embodiment, the support frame 1 is detachably equipped with a push-out mechanism 7. The push-out mechanism 7 includes multiple push plates 701, which are connected by a synchronizing rod 712. One side of each push plate 701 has a bend 704 with an obtuse angle. The other side of each push plate 701 has a first branch plate 702 and a second branch plate 703. The push plate 701 is hinged to the support frame 1 via a connecting rod 713. The first branch plate 702 and the second branch plate 703 are hinged with abutment plates 711, which are used to detach the steel cage from the support frame 1. This structure allows the support frame 1 to move around the pre-embedded hinge seat 4 during the design process. At this time, because the hoisted steel cage has not completely left the prefabricated frame, the bottom of the support frame 1 will move under its own weight, thus pressing down the push plate 701. Under the action of torque, the push plate 701 pushes the steel cage away from the surface of the support frame 1 from different positions through the abutment plates 711 on the first branch plate 702 and the second branch plate 703 until the support frame 1 rotates into place. At this time, the steel cage completes the overall sliding and locking.

[0063] like Figure 21In the preferred embodiment, the push plate 701 has a first mounting hole 705 and a second mounting hole 706. A synchronizing rod 712 passes through the synchronizing rod 712. The vertical rod 110 has a first through hole 104. A connecting rod 713 passes through the second mounting hole 706 and the first through hole 104. The first branch plate 702 and the second branch plate 703 have second through holes 707. A C-shaped plate 708 is connected to the second through hole 707 via a pin 11. The C-shaped plate 708 has a third through hole 709 and a connecting hole 710. The abutment plate 711 is connected to the connecting hole 710 via a locking pin 12. This structure allows the abutment plate 711 to have a certain rotational allowance in both the first branch plate 702 and the second branch plate 703, ensuring that it can better transfer force to the reinforcing cage at its position during rotation of the first branch plate 702 and the second branch plate 703, resulting in better overall separation and serving as a bottom support.

[0064] A construction method for a reversible precast steel cage for diaphragm walls includes the following steps:

[0065] S1. Fabricate and process each component according to the design drawings;

[0066] S2. Fix the embedded parts at the construction site and fix the pre-embedded hinge seat 4 on the embedded parts;

[0067] S3. Fix the prefabricated steel cage frame to the embedded hinge seat 4. After leveling it, install a pad at the other end away from the embedded hinge seat 4 to ensure that the prefabricated steel cage frame is horizontal.

[0068] S4. Flip the entire flipping component 2 upwards and insert the fixing rod 201 for limiting connection;

[0069] S5. Assemble various types of steel bars sequentially on the precast steel cage frame, and install each steel bar on the snap-fit ​​groove 504 of the steel bar positioning unit 5 at different positions.

[0070] S6. After the steel cage is assembled, pull out the fixing rod 201, flip the entire flipping component 2 up and down, and install bolts at the corresponding positions of the support frame 1 and the flipping component 2 to fix the flipping component 2.

[0071] S7. Connect the longitudinal steel bars at the top of the steel cage to the cantilever beam 3;

[0072] S8. Using the drive mechanism to connect the precast steel cage, slowly lift it. The lifting equipment connects the longitudinal steel bars of the steel cage. During the lifting process, the lifting equipment connecting the steel cage does not apply force. When the lifting equipment connecting the precast frame lifts the precast frame to the design angle, the lifting equipment connecting the steel cage applies lifting force. At this time, the connection between the precast frame and the steel cage is slowly loosened, and the connection between the precast frame and the longitudinal steel bars of the steel cage is released. When the site conditions meet the requirements and there is spare crane equipment, the drive mechanism can use a crane to lift one end of the support frame. When the site conditions do not meet the requirements and there is spare crane equipment, a support can be set on the rotating side of the support frame 1, and then a fixed pulley can be set on the top of the support. The winch is connected to the support frame 1 on the side near the cantilever beam 3 through the fixed pulley, so that only the winch needs to complete the rotation of the support frame 1.

[0073] S9. The lifting equipment connecting the steel cage will hoist the steel cage to the slot in the diaphragm wall and lower the steel cage.

[0074] S10. The drive mechanism connecting the precast frame lowers the precast frame and removes the mounting bolts at the corresponding positions of the support frame 1 and the flipping assembly 2.

[0075] S11. Repeat steps S4 to S9 until all steel cages are fabricated and hoisted.

[0076] 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 reversible precast frame for diaphragm wall reinforcement cages, characterized in that: Includes a support frame (1), with multiple flipping components (2) provided in the middle near the edge of the support frame (1), a cantilever beam (3) provided at one end of the support frame (1), and a connector (8) and an anti-flip head (9) provided at the other end of the support frame (1). The connector (8) is connected to the pre-embedded hinge seat (4). It is also provided with a rebar positioning unit (5), which includes a first toothed plate (501), a second toothed plate (502) and a third toothed plate (503). The first toothed plate (501) is located on the support frame (1), the second toothed plate (502) is located on the flipping assembly (2), and the tops of multiple second toothed plates (502) are connected by the third toothed plate (503). The pre-embedded hinge seat (4) includes a hinge joint (402), the bottom of the hinge joint (402) is provided with a load-bearing plate (401), the load-bearing plate (401) is provided with a self-locking unit (10), the anti-tipping head (9) is provided with a bayonet (901) and a transition surface (904), and the self-locking unit (10) is used to lock the anti-tipping head (9); The load-bearing plate (401) is provided with a first through groove (403). The self-locking unit (10) includes a straight plate (1001). A plug (1002) is provided on one side of the straight plate (1001). The plug (1002) is inserted into the first through groove (403). A locking plate (902) is provided in the middle of the bayonet (901). A first inclined surface (903) is provided on both sides of the locking plate (902). A third through groove (1003) and a fourth through groove (1004) are provided vertically on the side of the straight plate (1001) away from the plug (1002). A boss (1006) is provided on the lower side of the fourth through groove (1004). A first locking hole (1005) is provided on the outer side of the boss (1006). The boss (1006) is provided with... Two trigger blocks (1008) are slidably disposed in the guide hole (1007) and the fourth through groove (1004). The two trigger blocks (1008) cooperate to clamp the card plate (902). A spring (1010) is inserted through the guide hole (1007). The two ends of the spring (1010) are respectively fixed in the second locking hole (1009) of the trigger block (1008). A second inclined surface (1011) is provided on the trigger block (1008). The second inclined surface (1011) matches the first inclined surface (903). A recessed groove (1012) is provided at the bottom of the trigger block (1008). A locking pin (12) for limiting the trigger block (1008) is provided in the first locking hole (1005).

2. The reversible precast frame for diaphragm wall reinforcement cage according to claim 1, characterized in that: The support frame (1) includes two frames in the vertical direction. The two frames are connected by a vertical rod (110). The frames are provided with two uprights (101) in parallel. The two uprights (101) are connected by multiple horizontal rods (102). A diagonal rod (103) is also provided between the uprights (101) and the horizontal rods (102). The cantilever beam (3) is fixed on the side wall of the outermost horizontal rod (102). The connector (8) and the anti-tipping head (9) are respectively set on the two uprights (101) at different heights on the same side.

3. The reversible precast frame for diaphragm wall reinforcement cage according to claim 2, characterized in that: The upper upright (101) is provided with a second locking plate (109), and the vertical rod (110) on one side of the second locking plate (109) is provided with a first locking plate (108). The flipping assembly (2) includes a fixing rod (201), the bottom of the fixing rod (201) is provided with a first connector (202), the first connector (202) and the second locking plate (109) are hinged by a pin (11), the fixing rod (201) is provided with a first ear plate (203) on one side, the first ear plate (203) is provided with a first through hole (204), and the through rod (205) passes through the first through hole (204) and the first locking plate (108).

4. The pre-fabricated turnable diaphragm wall reinforcement cage frame according to claim 2, characterized in that: A second through hole (105) is provided parallel to the vertical rod (110). A groove (106) and a clearance opening (107) are provided on the horizontal rod (102) near the second through hole (105). A telescopic mechanism (6) is slidably provided in the groove (106). The telescopic mechanism (6) includes a base plate (601). Two round rods (603) are provided on one side of the base plate (601). The round rods (603) pass through the second through hole (105). A sliding plate (605) is provided at the end of the round rod (603). A drive rod (606) is provided on one side of the sliding plate (605). A first threaded part (613) and a second threaded part (614) are provided at both ends of the drive rod (606). The first threaded part (613) and the second threaded part (614) are in opposite directions. The first threaded part (613) and the second threaded part (614) are respectively connected to There is a first slider (607) and a second slider (608). The first slider (607) and the second slider (608) have the same structure. The width of the first slider (607) and the second slider (608) matches the width of the clearance opening (107). The flipping assembly (2) is detachably hinged to the outside of the base plate (601). The flipping assembly (2) is provided with a first ear plate (203). The first ear plate (203) is provided with a first through hole (204). The base plate (601) is provided with a second ear plate (609). The second ear plate (609) is provided with a second through hole (610). The through rod (205) passes through the first through hole (204) and the second through hole (610). The flipping assembly (2) is provided with a second toothed plate (502). Multiple second toothed plates (502) are connected by a third toothed plate (503).

5. The pre-fabricated turnable diaphragm wall reinforcement cage frame according to claim 4, characterized in that: A reinforcing plate (604) is provided between the two round rods (603). A second connector (602) is provided on the outer side of the base plate (601). A fixing rod (201) is provided on the flip assembly (2). A first connector (202) is provided at the bottom of the fixing rod (201). The first connector (202) is hinged to the second connector (602) by a pin (11). Two first extension plates (611) are provided on one side of the slide plate (605). A first extension plate (611) is provided inside the first extension plate (611). A through hole (612) is provided, and a drive rod (606) is rotatably disposed in the first through hole (612). A limiting ring (623) is also provided on the first threaded part (613) and the second threaded part (614). A vertical plate (615) is connected to one side of the first slider (607) and the second slider (608) respectively through a partition (621). A horizontal plate (616) and a fixing hole (624) are provided on the vertical plate (615). A locking pin (12) is inserted into the fixing hole (624). The vertical plate (615) is provided with an oval hole (617). The horizontal plate (616) of the first slider (607) and the second slider (608) are respectively provided with a first threaded hole (619) and a second threaded hole (620). The first threaded part (613) and the second threaded part (614) are respectively threaded to the first threaded hole (619) and the second threaded hole (620). The first slider (607) and the second slider (608) are also provided with a rubber layer (618), and the rubber layer (618) is provided with multiple grooves (622).

6. The pre-fabricated turnable diaphragm wall reinforcement cage frame according to claim 2, characterized in that: The support frame (1) is detachably equipped with a push-out mechanism (7). The push-out mechanism (7) includes multiple push plates (701). The multiple push plates (701) are connected by a synchronizing rod (712). One side of the push plate (701) is provided with a bend (704) with an obtuse angle. The other side of the push plate (701) is provided with a first branch plate (702) and a second branch plate (703). The push plate (701) is hinged to the support frame (1) through a connecting rod (713). The first branch plate (702) and the second branch plate (703) are hinged with abutment plates (711). The abutment plates (711) are used to remove the steel cage from the support frame (1).

7. The pre-fabricated turn around diaphragm wall reinforcement cage as claimed in claim 6, wherein: The push plate (701) is provided with a first mounting hole (705) and a second mounting hole (706). The synchronizing rod (712) is inserted into the synchronizing rod (712). The vertical rod (110) is provided with a first through hole (104). The connecting rod (713) is inserted into the second mounting hole (706) and the first through hole (104). The first branch plate (702) and the second branch plate (703) are provided with a second through hole (707). The second through hole (707) is connected to a C-shaped plate (708) through a pin (11). The C-shaped plate (708) is provided with a third through hole (709) and a connecting hole (710). The abutment plate (711) is connected to the connecting hole (710) through a locking pin (12).

8. A construction method for a reversible precast steel cage frame for diaphragm walls according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1. Fabricate and process each component according to the design drawings; S2. Fix the embedded parts at the construction site and fix the pre-embedded hinge seat (4) on the embedded parts; S3. Fix the prefabricated steel cage frame to the embedded hinge seat (4), and after leveling it, install a pad at the other end away from the embedded hinge seat (4) to ensure that the prefabricated steel cage frame is level. S4. Flip the entire flipping component (2) upwards and insert the fixing rod (201) for limiting connection; S5. Assemble various types of steel bars in sequence on the precast steel cage frame, and install each steel bar on the snap-fit ​​groove (504) of the steel bar positioning unit (5) at different positions; S6. After the steel cage is assembled, pull out the fixing rod (201), lower the entire flipping component (2), and install bolts at the corresponding positions of the support frame (1) and the flipping component (2) to fix the flipping component (2); S7. Connect the longitudinal steel bars at the top of the steel cage to the cantilever beam (3); S8. Use the drive mechanism to connect the precast steel cage frame and slowly lift it. The lifting equipment connects the longitudinal steel bars of the steel cage. During the lifting process, the lifting equipment connecting the steel cage does not apply force. When the lifting equipment connecting the precast frame lifts the precast frame to the design angle, the lifting equipment connecting the steel cage applies lifting force. At this time, the connection between the precast frame and the steel cage is slowly loosened, and the connection between the precast frame and the longitudinal steel bars of the steel cage is released. S9. The lifting equipment connecting the steel cage will hoist the steel cage to the slot in the diaphragm wall and lower the steel cage. S10. The drive mechanism connecting the precast frame lowers the precast frame and removes the mounting bolts at the corresponding positions of the support frame (1) and the flipping assembly (2). S11. Repeat steps S4 to S9 until all steel cages are fabricated and hoisted.

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