Precise steel bar frame vertical binding formwork

Abstract

A left piece frame and a right piece frame are connected together through an upper horizontal connecting rod and a lower horizontal connecting rod to form the formwork, the splicing angle and the position error of the horizontal plane of the formwork are accurately calibrated through a horizontal diagonal bridging, and the vertical splicing angle and the position error of the formwork are accurately calibrated through a vertical diagonal bridging. The height position of the formwork is accurately adjusted by the adjusting screw rod, the horizontal plane calibration of the formwork is performed by the plane level corrector, and the horizontal plane right angle calibration of the formwork is performed by the laser right-angle instrument angle calibration system. When the steel bar frame is vertically bound, the vertical embedded steel bars are placed in the U-shaped clamping grooves of the steel bar clamping groove plates in the formwork for accurate position positioning and elevation limiting, the vertical embedded steel bars are connected with the horizontally-distributed steel bars to form steel bar meshes, and then the left mesh and the right mesh are connected through the single-limb stirrups to form the complete three-dimensional steel bar frame. The position and the height can be accurately controlled when the vertical embedded steel bars are erected and bound, and the installation quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated channel construction technology, and in particular to a precision steel bar erection and binding formwork. Background Technology

[0002] Patent publication number CN116927144A discloses a precast channel with a precast base and side wall components symmetrically arranged on both sides of the precast base. The cross-section of the precast base and the side wall components is U-shaped after connection and assembly. The precast base is a reinforced concrete structure cast on site, while the side wall components are prefabricated in the factory. The two are connected and installed using a precast structure.

[0003] When assembling the precast base slab and side wall components, a grouting sleeve connection method is often used to connect the lower layer of embedded steel bars and the steel bars in the upper layer of precast components. That is, a steel mesh is arranged in the middle of the precast base slab, and embedded steel bars are arranged on both sides of the precast base slab. At the same time, steel sleeves are arranged in the side wall components. The installation and positioning of the side wall components are achieved by connecting the embedded steel bars and the steel sleeves.

[0004] The pre-embedded reinforcing bars on both sides of the first-cast base slab are used for connection with the side wall components. These pre-embedded reinforcing bars consist of two rows of vertical pre-embedded reinforcing bars, horizontally distributed reinforcing bars, and single-leg stirrups. Figure 1 As shown. Vertically embedded reinforcing bars are arranged vertically; each row of vertically embedded reinforcing bars is connected by multiple horizontally distributed reinforcing bars, which are evenly distributed vertically; two rows of vertically embedded reinforcing bars are connected and fixed by multiple sets of single-leg stirrups, which are arranged along the length of the horizontally distributed reinforcing bars, with each set consisting of two stirrups distributed vertically. The vertically embedded reinforcing bars, horizontally distributed reinforcing bars, and single-leg stirrups are all cast within the pre-cast base slab. It is important to note that the upper ends of the vertically embedded reinforcing bars extend upwards, protruding from the pre-cast base slab, to connect with the reinforcing bar sleeves in the side wall components, enabling the positioning and installation of the side wall components.

[0005] Therefore, the quality and accuracy of the erection and binding of the pre-cast reinforcing bars in the pre-cast foundation slab, especially the position and elevation of the vertical pre-cast reinforcing bars, are crucial to the subsequent installation of the side wall components. Traditionally, the pre-cast reinforcing bars in the pre-cast foundation slab are erected manually, and measuring the position with a ruler results in inaccurate positioning, poor elevation control, and significant positional deviations. This fails to meet design accuracy requirements, leading to misalignment of the pre-cast reinforcing bars with the reinforcing bar sleeves in the precast side wall components during later installation. This causes installation difficulties, and in severe cases, installation failure, disrupting normal construction. Summary of the Invention

[0006] To address the problems of inaccurate positioning and inadequate elevation control of embedded steel bars in traditional steel bar erection and tying construction, this utility model provides a precision steel bar erection and tying formwork. This specially designed formwork ensures precise positioning and elevation control of the embedded steel bars, guaranteeing the correct erection and tying installation of the embedded steel bars in the pre-cast base slab. This meets the installation requirements for embedded steel bars in prefabricated structures and ensures the accuracy of the connection between the steel bar sleeves and the embedded steel bars in the later side wall components.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A precision rebar erection and binding formwork for positioning and elevation control of pre-embedded rebars includes a left frame with an upper horizontal connecting rod, a right frame with a lower horizontal connecting rod, horizontal and vertical scissor braces for connecting the left and right frames, and a plane leveling device and a laser right-angle instrument calibration system for formwork correction.

[0009] The left and right panel frames are arranged symmetrically. Both the left and right panel frames include a vertical rod, an adjusting screw, a lower horizontal long rod, a middle horizontal long rod, an upper horizontal height limiting rod, and a steel bar slot plate. The two panel frames have the same structure.

[0010] The number of vertical poles is multiple poles arranged in parallel. Each vertical pole is equipped with an adjusting screw at its lower end for adjusting the height of the vertical pole, so as to facilitate precise adjustment of the height position of the rebar scaffolding and binding formwork. Between the multiple vertical poles, there are upper horizontal height limiting poles, middle horizontal long poles and lower horizontal long poles arranged in parallel in order. Multiple rebar slot plates are arranged in a straight line on the middle horizontal long poles and the lower horizontal long poles.

[0011] The upper and lower horizontal connecting rods overlap and are bolted together to connect the left and right frame panels. This facilitates the assembly of the upper and lower horizontal connecting rods, allowing the left and right frame panels to be connected together to form a rebar erection and binding formwork. Horizontal and vertical scissor braces are also provided between the left and right frame panels to improve the reliability of the connection. This also facilitates precise calibration of the horizontal and vertical assembly angles and positional errors of the rebar erection and binding formwork.

[0012] Furthermore, the length of the middle horizontal long rod and the length of the lower horizontal long rod are the same, and both the middle horizontal long rod and the lower horizontal long rod include a middle section rod, an upper compartment short rod, and a lower compartment short rod;

[0013] The length of the middle section rod is the same as that of the upper horizontal height-limiting rod. The upper horizontal height-limiting rod is convenient for limiting the height of the vertical embedded steel bars. The upper sub-compartment short rod and the lower sub-compartment short rod are respectively arranged at both ends of the middle section rod. The upper sub-compartment short rod is connected to the middle section rod in parallel, and the lower sub-compartment short rod is connected to the middle section rod with an up-and-down offset, aiming to facilitate the lap joint installation of two adjacent formworks.

[0014] Furthermore, the steel bar clamping groove plates on the middle horizontal long rod and the lower horizontal long rod correspond to each other up and down. Two steel bar clamping groove plates are used to limit one vertical embedded steel bar. The steel bar clamping groove plates are arranged on the middle section rod, the upper sub-compartment short rod and the lower sub-compartment short rod. The steel bar clamping groove plate is a plate body with a U-shaped groove opened at one edge, which is convenient for fixing and positioning the vertical embedded steel bars.

[0015] Furthermore, multiple upper horizontal connecting rods are arranged on the left formwork, and multiple lower horizontal connecting rods are arranged on the right formwork. The upper horizontal connecting rods and the lower horizontal connecting rods correspond to each other, increasing the connection area between the left formwork and the right formwork. The corresponding upper horizontal connecting rods and lower horizontal connecting rods overlap up and down and are fixedly connected by bolts.

[0016] Furthermore, the horizontal scissors brace includes an upper horizontal scissors brace and a lower horizontal combined scissors brace arranged in parallel up and down. The upper horizontal scissors brace is detachably arranged between the upper parts of the left formwork and the right formwork, and the lower horizontal combined scissors brace is detachably arranged between the lower parts of the left formwork and the right formwork, facilitating the detachable installation of the horizontal scissors brace.

[0017] Furthermore, the number of the vertical scissors braces is two arranged in parallel front and back. The two vertical scissors braces are respectively detachably arranged between the front and the back of the left formwork and the right formwork.

[0018] Furthermore, the plane level corrector includes a vertical tube height scale column with a vertical tube height scale, a horizontal tube and a vertical tube filled with a bright-colored liquid. The vertical tube height scale columns are vertically arranged at both ends of the upper horizontal height-limiting rods of the left formwork and the right formwork;

[0019] The horizontal tube bent in a "凵" shape is arranged at the top of the left formwork or the right formwork. The four corners of the horizontal tube are connected with the vertical tubes. The top of the vertical tube is provided with a plug cap. The four vertical tubes and the four vertical tube height scale columns are arranged side by side in correspondence.

[0020] Furthermore, the laser right-angle instrument calibration system includes a laser right-angle instrument and a laser receiving positioning plate with two laser positioning points. The laser right-angle instrument and the laser receiving positioning plate are respectively installed at both ends of the upper horizontal height limit rod of the left and right plate frames. The two laser receiving positioning plates are arranged along one diagonal of a rectangle, and the two laser right-angle instruments are arranged along the other diagonal of a rectangle. Each laser right-angle instrument emits two mutually perpendicular laser beams that are directed toward the two adjacent laser receiving positioning plates respectively.

[0021] The beneficial effects of this utility model through the above technical solution are:

[0022] This utility model is a structural component for precise positioning and height control of pre-embedded steel bars in the pre-cast bottom slab of prefabricated channel troughs with pre-cast bottom and post-cast wall construction. It can accurately control the horizontal position and height of the pre-embedded steel bars, greatly improve the accuracy of steel bar erection and binding to meet design accuracy requirements, reduce steel bar erection and binding deviations, and meet the installation requirements of pre-embedded steel bars in prefabricated structures.

[0023] The left and right frame panels of this utility model have identical structures and form the basic framework for erecting and binding reinforcing bars. The left and right frame panels are assembled together via upper and lower horizontal connecting rods to form a reinforcing bar erection and binding formwork. Horizontal and vertical scissor braces are used to precisely calibrate the horizontal and vertical assembly angles and positional errors of the formwork. Adjusting screws allow for convenient and precise adjustment of the formwork's height to meet design elevation requirements. A plane leveling device and a laser right-angle instrument angle calibration system are used to calibrate the horizontal plane and right angles of the formwork, ensuring the assembly accuracy of the formwork.

[0024] This utility model's formwork requires multiple formwork frames to be used in combination, and these multiple formwork frames need to be connected and installed together. To achieve reliable installation, upper and lower compartment short rods are provided. Their function is to connect adjacent rebar frames for erecting and binding the formwork. When installing formwork frames in adjacent compartments, the upper and lower compartment short rods are overlapped and bolted together to form a joint between adjacent formwork frames. At the same time, the rebar slot plates on the upper and lower compartment short rods are used to hold the vertical embedded rebars in adjacent compartments and mark the position of the vertical embedded rebars, ensuring that each vertical embedded rebar in adjacent compartments is in the correct position. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the arrangement of pre-embedded steel bars in the pre-cast base slab.

[0026] Figure 2 This is a schematic diagram of the installation of the left and right frame panels of a precision steel bar erection and binding mold frame according to this utility model.

[0027] Figure 3 This is a schematic diagram showing the separation of the left and right frames of a precision steel bar erection and binding mold according to this utility model.

[0028] Figure 4 This is a schematic diagram of the left frame of a precision steel bar erection and binding mold frame according to this utility model.

[0029] Figure 5 This is a schematic diagram of the arrangement of the upper horizontal height limit bar, the middle horizontal long bar, and the lower horizontal long bar of a precision steel bar erection and binding formwork according to this utility model.

[0030] Figure 6 This is a schematic diagram of a horizontal scissor brace for a precision steel bar erection and binding formwork according to this utility model.

[0031] Figure 7 This is a schematic diagram of the vertical scissor bracing of a precision steel bar erection and binding formwork according to this utility model.

[0032] Figure 8 This is a schematic diagram of two adjacent mold frames combined in a precision steel bar erection and binding mold frame according to this utility model.

[0033] Figure 9 This utility model relates to a precision rebar frame erection and binding formwork. Figure 8 Diagram showing the connection between the upper and lower sub-compartment short bars at point A.

[0034] Figure 10 This is a schematic diagram showing the separation of the upper and lower compartment short rods of a precision steel bar erection and binding mold frame according to this utility model.

[0035] Figure 11 This is a schematic diagram of a plane leveling device and laser right-angle instrument calibration system for a precision steel bar erection and binding formwork.

[0036] Figure 12 This is a schematic diagram of the installation of the horizontal pipe and the upper horizontal height limiting connecting rod of a precision steel bar erection and binding formwork according to this utility model.

[0037] Figure 13 This is a schematic diagram showing the separation of the horizontal tube and the upper horizontal height limiting connecting rod of a precision steel bar erection and binding formwork according to this utility model.

[0038] Figure 14 This is a schematic diagram of the application status of a laser right-angle instrument calibration system for a precision steel bar erection and binding formwork according to this utility model. The dotted line in the diagram represents the laser beam.

[0039] Figure 15 This is a schematic diagram of the installation structure separation of a laser right-angle instrument for a precision steel bar erection and binding formwork.

[0040] Figure 16This is one of the schematic diagrams of step 5 in the construction process of a precision steel bar erection and binding formwork of this utility model. Only one formwork is shown in the figure, and vertical pre-embedded steel bars are erected inside the formwork.

[0041] Figure 17 This is the second schematic diagram of step 5 in the construction process of a precision steel bar erection and binding formwork of this utility model. Only one formwork is shown in the figure. Vertical pre-embedded steel bars, horizontally distributed steel bars and single-leg stirrups are erected inside the formwork.

[0042] The attached diagram is labeled as follows: 1. Vertical embedded reinforcing bar; 2. Horizontal distributed reinforcing bar; 3. Single-leg stirrup; 4. Left frame; 5. Right frame; 6. Vertical pole; 7. Adjusting screw; 71. Fixing threaded plate; 72. Height adjusting bolt; 8. Lower horizontal long pole; 9. Middle horizontal long pole; 10. Upper horizontal height limiting pole; 11. Reinforcing bar slot plate; 111. U-shaped slot; 12. Horizontal scissor brace; 13. Vertical scissor brace; 14. Middle section pole; 15. Upper compartment short pole; 16. Lower compartment short pole; 17. Upper horizontal connecting pole; 18. Lower horizontal connecting pole; 19. Upper... Horizontal scissor bracing, 191 cross bracing, 192 long horizontal bar, 20 lower horizontal combined scissor bracing, 201 bracing rod one, 202 bracing rod two, 21 notch, 221 vertical pipe height scale, 222 vertical pipe height scale column, 23 horizontal pipe, 24 vertical pipe, 25 upper horizontal height limiting connecting rod, 26 vertical pipe support column, 27 plug cap, 28 laser right angle instrument, 29 laser positioning point, 30 laser receiving positioning plate, 311 connecting base plate, 312 connecting screw, 313 connecting sleeve, 314 locking bolt. Detailed Implementation

[0043] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0044] like Figures 1-17 As shown, a precision rebar erection and tying formwork is used for precise positioning and elevation control of pre-embedded rebars. It should be noted beforehand that this precision rebar erection and tying formwork is used in the construction of prefabricated channel systems where the side wall components are prefabricated in the factory, while the base slab is poured on-site. The base slab contains pre-embedded rebars, and the side wall components contain rebar sleeves. During side wall component installation, the pre-embedded rebars in the base slab are inserted into the rebar sleeves in the side wall components to form a rebar connection. Cement grout is then poured into the rebar sleeves to encase the pre-embedded rebars, forming a strong bond. This integrates the base slab and side wall components into a single, complete channel system.

[0045] The above pre-cast base slab is 10m long per section, and the thickness of the pre-cast base slab is 600mm. Each side wall component is 2m long. Correspondingly, for a pre-cast base slab of 10m length per section, 5 side wall components need to be assembled. The side wall components are 0.6m thick and 5m high.

[0046] The positions of the embedded reinforcing bars in the pre-cast foundation slab correspond to the reinforcing bar sleeves in the side wall components. The embedded reinforcing bars in the pre-cast foundation slab include vertical embedded reinforcing bars 1, horizontal distributed reinforcing bars 2, and single-leg stirrups 3. These three types of reinforcing bars are welded and tied together to form a three-dimensional reinforcing frame. This reinforcing frame is arranged on both sides of the pre-cast foundation slab, such as... Figure 1 As shown. The vertical embedded steel bars 1 are arranged vertically, in two rows, with a row spacing of 500mm. Along the channel axis, the spacing between two adjacent vertical embedded steel bars 1 in the same row is 200mm. It is required that the vertical embedded steel bars 1 in the first-cast base slab protrude upwards, with a length of 200mm protruding from the concrete surface. The diameter of the vertical embedded steel bars 1 is 22mm.

[0047] Based on the above application background, it is necessary for the rebar erection and binding formwork to accurately control the horizontal position and height of the vertically embedded rebar 1, so as to reduce the deviation of the rebar erection and binding.

[0048] It should be noted that within a 10m section of the first-cast base slab, five side wall components need to be assembled. Therefore, the construction is carried out in sections. The working range of the rebar erection and tying formwork here is the length of one side wall component. To meet the assembly requirements of five side wall components, five rebar erection and tying formworks need to be arranged in a straight line to serve the precision erection and tying of the pre-embedded rebar in the first-cast base slab within a 10-meter range.

[0049] In this embodiment, the rebar erection and binding formwork includes a left frame 4 with an upper horizontal connecting rod 17, a right frame 5 with a lower horizontal connecting rod 18, horizontal scissor braces 12 and vertical scissor braces 13 for connecting the left frame 4 and the right frame 5, and a plane leveling device and a laser right-angle instrument calibration system for formwork correction, such as... Figure 2 As shown.

[0050] The left and right frame panels 4 and 5 are symmetrically arranged. Both panels include a vertical pole 6, an adjusting screw 7, a lower horizontal long pole 8, a middle horizontal long pole 9, an upper horizontal height limiting pole 10, and a rebar slotting plate 11. This indicates that the left and right frame panels 4 and 5 have identical structures and form the basic framework for erecting and binding the rebar. Figure 3 As shown.

[0051] like Figure 4 As shown, taking the left frame 4 as an example, its structural composition is explained in detail: the number of vertical rods 6 is multiple rods arranged in parallel. Here, there are three vertical rods 6, which are evenly distributed. The vertical rods 6 are angle iron structures. The vertical rods 6 are equivalent to the vertical legs of the frame and play the role of supporting the entire weight of the frame.

[0052] Each vertical pole 6 has an adjusting screw 7 at its lower end for adjusting its height. The adjusting screw 7 acts as a height adjustment and load-bearing component of the rebar rigging formwork, supporting its weight and serving as a support point. The main function of the adjusting screw 7 is to raise or lower the entire rebar rigging formwork by turning it, thereby adjusting its elevation, verticality, and horizontality to meet quality accuracy requirements.

[0053] The adjusting screw 7 includes a fixing threaded hole plate 71 and a height adjusting bolt 72. The fixing threaded hole plate 71 is a rectangular steel plate with a side length of 70-100mm and a thickness of 12-16mm. A screw hole is drilled at the center point of the fixing threaded hole plate 71. The height adjusting bolt 72 is a through-threaded screw with an external hexagonal fixing nut at one end. The height adjusting bolt 72 has a diameter of 20mm and a length of 200-250mm, and is made of steel.

[0054] Between the three vertical poles 6, there are three horizontal height limiting poles: an upper horizontal height limiting pole 10, a middle horizontal long pole 9, and a lower horizontal long pole 8, arranged in parallel order from top to bottom. These three poles are all positioned between the three vertical poles 6 and are fixedly connected to them. Figure 5 As shown.

[0055] The upper horizontal height limiting bar 10, the middle horizontal long bar 9, and the lower horizontal long bar 8 are all angle iron structures. The upper horizontal height limiting bar 10 is shorter than the middle horizontal long bar 9. The upper horizontal height limiting bar 10 is used to limit the height of the vertical pre-embedded steel bar 1. It is required that the top of the vertical pre-embedded steel bar 1 be flush with the upper horizontal height limiting bar 10 when it is installed later.

[0056] The middle horizontal long rod 9 and the lower horizontal long rod 8 are of equal length and have the same structure. The middle horizontal long rod 9 and the lower horizontal long rod 8 are located in the middle and lower parts of the frame, respectively, and are equivalent to the horizontal support rods of the frame. Since the vertical pre-embedded steel bars 1 are connected by horizontally distributed steel bars 2, in order to prevent affecting the binding of the steel bars, the lower horizontal long rod 8 should be placed 70-90mm above the bottom horizontally distributed steel bar 2, and the middle horizontal long rod 9 should be placed 70-90mm above the top horizontally distributed steel bar 2. This sets requirements for the placement of the middle horizontal long rod 9 and the lower horizontal long rod 8.

[0057] Both the middle horizontal long pole 9 and the lower horizontal long pole 8 include a middle section pole 14, an upper compartment short pole 15, and a lower compartment short pole 16. The length of the middle section pole 14 is the same as that of the upper horizontal height limit pole 10. The length of the middle section pole 14 is 1800mm. The length of the middle section pole 14 plus the upper compartment short pole 15 is 2000mm, which is the same as the length of a side wall component.

[0058] The middle section rod 14 has an upper compartment short rod 15 and a lower compartment short rod 16 at both ends. The upper and lower compartment short rods 15 and 16 are the same length, both 200mm. Therefore, the lengths of the middle horizontal long rod 9 and the lower horizontal long rod 8 are both 1800 + 200 + 200 = 2200mm. The upper compartment short rod 15 is parallel to the middle section rod 14, essentially an extension of the middle section rod 14. The lower compartment short rod 16 is staggered vertically from the middle section rod 14, with the stagger height equal to the thickness of the middle section rod 14. This staggered connection means that the upper surface of the lower compartment short rod 16 connects to the lower surface of the middle section rod 14.

[0059] To accommodate the pre-embedded reinforcing bars within a 10-meter pre-cast foundation slab, five reinforcing bar scaffolding and binding forms are required. To ensure reliable connections between these forms, adjacent scaffolding and binding forms are overlapped and connected using bolts. Figure 8 As shown. The overlapping structure here uses the overlap of the upper compartment short rod 15 and the lower compartment short rod 16. Therefore, the overlap length between adjacent formwork frames is 200mm. The function of the upper compartment short rod 15 and the lower compartment short rod 16 is to connect adjacent rebar erection and binding formwork frames. The overlap of the upper compartment short rod 15 and the lower compartment short rod 16, and the fixing with bolts, form the connection between adjacent formwork frames, as shown. Figure 9 and Figure 10 As shown.

[0060] Multiple rebar slotting plates 11 arranged in a straight line are provided on both the middle horizontal long rod 9 and the lower horizontal long rod 8. That is, rebar slotting plates 11 are arranged on the middle section rod 14, the upper compartment short rod 15, and the lower compartment short rod 16. The multiple rebar slotting plates 11 on the same component are spaced 200mm apart, and the rebar slotting plates 11 on the middle horizontal long rod 9 and the lower horizontal long rod 8 correspond one-to-one. Thus, the positioning of a single rebar can be achieved by using two corresponding rebar slotting plates 11. Among them, the rebar slotting plates 11 on the upper compartment short rod 15 and the lower compartment short rod 16 can hold the vertical pre-embedded rebars 1 in adjacent formwork frames, mark the position of the vertical pre-embedded rebars 1, and ensure that each vertical pre-embedded rebar 1 in adjacent formwork frames is in the correct position.

[0061] The rebar slotting plate 11 is used to fix the vertically embedded rebar 1, enabling precise positioning and fixation of the vertically embedded rebar 1. The rebar slotting plate 11 is a plate with a U-shaped slot 111 on its edge; that is, the rebar slotting plate 11 has a rectangular plate structure with a thickness of 6-10mm. The U-shaped slot 111 is a slot for placing the vertically embedded rebar 1, allowing for precise positioning of the vertically embedded rebar 1. The width of the U-shaped slot 111 is the diameter of the vertically embedded rebar 1 plus a 1mm gap, i.e., 22+1=23mm, and the depth of the U-shaped slot 111 is the diameter of the vertically embedded rebar 1, 22mm.

[0062] The above describes the structural composition of the left frame 4. The structure of the right frame 5 is the same, and will not be described again here. The height of the left frame 4 and the right frame 5 is the thickness of the pre-cast base slab plus the exposed length of the vertical pre-embedded steel bar 1, that is, 600 + 200 = 800 mm.

[0063] The left frame 4 and the right frame 5 need to be connected and installed together. Here, the left frame 4 and the right frame 5 are assembled and fixed together by the upper horizontal connecting rod 17 and the lower horizontal connecting rod 18. The upper horizontal connecting rod 17 and the lower horizontal connecting rod 18 overlap and are bolted together to connect the left frame 4 and the right frame 5, forming a steel reinforcement erection and binding formwork. The upper horizontal connecting rod 17 and the lower horizontal connecting rod 18 are the connecting parts of the left frame 4 and the right frame 5. The one placed on top is called the upper horizontal connecting rod 17, and the one placed below is called the lower horizontal connecting rod 18. Both the upper horizontal connecting rod 17 and the lower horizontal connecting rod 18 are made of square steel.

[0064] Specifically, the left frame 4 is equipped with multiple upper horizontal connecting rods 17, totaling six rods. These six rods are divided into three groups, with two rods arranged vertically in each group. The three groups of upper horizontal connecting rods 17 correspond to three vertical rods 6, with two upper horizontal connecting rods 17 mounted on each vertical rod 6. These two upper horizontal connecting rods 17 are vertically connected to the middle horizontal long rod 9 and the lower horizontal long rod 8, respectively. Meanwhile, the right frame 5 is equipped with multiple lower horizontal connecting rods 18. The arrangement of the lower horizontal connecting rods 18 is the same as that of the upper horizontal connecting rods 17, and will not be described again here.

[0065] Therefore, the upper horizontal connecting rod 17 and the lower horizontal connecting rod 18 correspond one-to-one, and the corresponding upper horizontal connecting rod 17 and lower horizontal connecting rod 18 overlap vertically and are fixed by bolts. That is, there is a height misalignment between the corresponding upper horizontal connecting rod 17 and lower horizontal connecting rod 18, which allows the upper horizontal connecting rod 17 and lower horizontal connecting rod 18 to overlap vertically. By using bolts to pass through the corresponding upper horizontal connecting rod 17 and lower horizontal connecting rod 18, the left plate frame 4 and the right plate frame 5 can be reliably connected and fixed together, realizing the union of the left plate frame 4 and the right plate frame 5.

[0066] To ensure a secure connection between the left frame 4 and the right frame 5, horizontal scissor braces 12 and vertical scissor braces 13 are respectively installed between them. This aims to improve the reliability of the connection, ensure the structural strength of the entire formwork, resist external impacts, and prevent deformation of the formwork. Simultaneously, the horizontal scissor braces 12 can precisely calibrate the assembly angle and positional errors of the horizontal plane of the rebar erection and binding formwork, while the vertical scissor braces 13 can precisely calibrate the vertical assembly angle and positional errors of the rebar erection and binding formwork.

[0067] like Figure 6 As shown, the horizontal scissor bracing 12 includes an upper horizontal scissor bracing 19 and a lower horizontal combined scissor bracing 20 arranged in parallel. That is, the horizontal scissor bracing 12 has two specifications: the upper horizontal scissor bracing 19 and the lower horizontal combined scissor bracing 20. These two specifications are structurally independent. The upper horizontal scissor bracing 19 and the lower horizontal combined scissor bracing 20 are respectively bolted to the upper planes of the middle horizontal long rod 9 and the lower horizontal long rod 8 of the left frame 4 and right frame 5.

[0068] The upper horizontal scissor brace 19 is detachably installed between the left panel frame 4 and the right panel frame 5. Specifically, the upper horizontal scissor brace 19 is an integral structure, comprising an "X"-shaped cross brace 191 and long horizontal bars 192 arranged at both ends of the cross brace 191, providing a strong anti-deformation structure. Both the cross brace 191 and the long horizontal bars 192 are angle iron structures. The cross brace 191 and the long horizontal bars 192 are fixedly connected, and the ends of the two long horizontal bars 192 are bolted to the middle horizontal long bar 9 in the left panel frame 4 and the right panel frame 5.

[0069] The lower horizontal combined scissor brace 20 is detachably installed between the left frame 4 and the right frame 5. Specifically, the lower horizontal combined scissor brace 20 is a split structure, which includes support rod one 201 and support rod two 202. The reason for the split design is that after the vertical embedded steel bars 1, horizontal distributed steel bars 2, and single-leg stirrups 3 are erected and tied, they form a barrier, which affects the disassembly of the lower horizontal combined scissor brace 20. Therefore, the split combined lower horizontal combined scissor brace 20 is used at the lower horizontal long rod 8, which can facilitate disassembly.

[0070] Both strut 1 (201) and strut 2 (202) are angle iron structures. Strut 1 (201) is arranged at an angle, with both ends bent, forming a "Z"-shaped structure. Strut 2 (202) has the same structure as strut 1 (201). After assembly, strut 2 (202) and strut 1 (201) are arranged in an "X" shape. The bends of struts 1 (201) and 2 (202) are bolted to the lower horizontal long rod 8 in the left frame 4 and right frame 5.

[0071] Since strut 1 201 and strut 2 202 are two relatively independent components that need to be assembled to form an "X"-shaped lower horizontal scissor brace 20, there is an overlapping portion between them. To avoid interference during the assembly of strut 1 201 and strut 2 202, a notch 21 is made in the side wall of strut 1 201. This notch 21 is used to accommodate strut 2 202, allowing strut 2 202 to be arranged on strut 1 201 through the notch 21, thus minimizing the height difference between strut 1 201 and strut 2 202.

[0072] like Figure 7 As shown, there are two vertical scissor braces 13 arranged in parallel front to back. The two vertical scissor braces 13 are detachably installed between the front and rear of the left frame 4 and the right frame 5, respectively. That is, the vertical scissor braces 13 are bolted between the corresponding vertical rods 6 in the left frame 4 and the right frame 5. The vertical scissor braces 13 are integral structures with an "X" shaped cross-section. The vertical scissor braces 13 are also made of angle iron.

[0073] To achieve leveling of the erected tying formwork and ensure the required elevation for the vertically embedded reinforcing bars 1, a plane leveling device is used. The main function of the plane leveling device is to correct the horizontal plane position of the reinforcing bar erecting and tying formwork during installation. During plane leveling, by adjusting the adjusting screws 7 of the reinforcing bar erecting and tying formwork, the red liquid in the vertical pipes 24 at the four corners of the formwork reaches the same liquid level, indicating that the entire reinforcing bar erecting and tying formwork is in a horizontal plane position, thus achieving the purpose of calibrating the plane position.

[0074] like Figures 11-13 As shown, the plane leveling device includes a vertical tube height scale post 222 with a vertical tube height graduation 221, a horizontal tube 23 containing a bright-colored liquid, and a vertical tube 24. Vertical tube height scale posts 222 are vertically installed at both ends of the upper horizontal height limiting rod 10 on the left frame 4 and the right frame 5. There are four vertical tube height scale posts 222 in total, arranged in a rectangular pattern. The vertical tube height scale posts 222 are engraved with millimeter-level graduations, allowing for precise calibration of the bright-colored liquid height. Each vertical tube height scale post 222 is made of hollow square steel, 140mm high, with a square cross-section of 40×40mm and a wall thickness of 3mm.

[0075] A horizontal tube 23, bent into a "U" shape, is provided at the top of either the left or right frame 4. This horizontal tube 23 can be installed on either the left or right frame 5. Preferably, the horizontal tube 23 is installed horizontally on the right frame 5. Specifically, square tube upper horizontal height limiting connecting rods 25 are fixed at both ends of the upper horizontal height limiting rod 10 on the right frame 5. The two upper horizontal height limiting connecting rods 25 and the upper horizontal height limiting rod are connected and combined to form a "U" shape, which matches the bent contour of the horizontal tube 23, thus protecting the horizontal tube 23.

[0076] Each upper horizontal height limiting connecting rod 25 has a vertically installed vertical tube support column 26 at one end. The vertical tube support column 26 is made of hollow square steel, 140mm high, with a square cross-section of 40×40mm and a wall thickness of 3mm. At the other end of each upper horizontal height limiting connecting rod 25, one of the four vertical tube height scale columns 222 mentioned above is arranged. In short, the upper horizontal height limiting rod 10 and the upper horizontal height limiting connecting rod 25 form a planar frame. The vertical tube support column 26 and the vertical tube height scale column 222 are connected to this planar frame, together forming a three-dimensional frame, which is the skeleton of the plane leveling device. The horizontal tube 23 is installed and fixed to this three-dimensional skeleton by adhesive bonding, together constituting the plane leveling device.

[0077] The horizontal tube 23 is sealed at both ends to prevent leakage of the bright liquid inside. Vertical tubes 24 connect to the four corners of the horizontal tube 23, forming a connecting structure. Both the horizontal tube 23 and the vertical tubes 24 are made of highly transparent rigid plastic with a diameter of 10-12mm. For the right film holder alone, the vertical tubes 24 are protected by two vertical tube height marking posts 222 and two vertical tube support posts 26. After the left and right film holders 4 and 5 are installed, the four vertical tubes 24 and four vertical tube height marking posts 222 are arranged side-by-side, corresponding to each other. Both ends of the vertical tube 24 are open. The lower opening facilitates connection with the horizontal tube 23, while the upper opening allows for the addition of the bright liquid. A cap 27 is also provided at the upper opening of the vertical tube 24 to prevent the bright liquid from flowing out or debris from entering the tube. The cap 27 can be removed or replaced as needed.

[0078] The bright liquid in the horizontal tube 23 and the vertical tube 24 can be pure water with added red dye, used to measure the height of the plane. During measurement, the principle of the connector is used. The height of the red liquid in the vertical tube 24 at the four corners of the plane leveling device corresponds to the scale of the vertical tube height scale column 222. When the same value is reached, it indicates that the entire steel reinforcement erection and binding formwork is in a horizontal position, thus achieving the purpose of calibrating the plane position.

[0079] At the same time, the laser right-angle gauge calibration system verifies the plane right-angle angle of the left frame 4 and right frame 5 of the rebar erection and binding formwork during installation. For example... Figure 14 and Figure 15 As shown, the laser right-angle meter calibration system includes a laser right-angle meter 28 and a laser receiving positioning plate 30 with two laser positioning points 29. A laser right-angle meter 28 and a laser receiving positioning plate 30 are respectively installed at both ends of the horizontal height limiting rod 10 on the left plate holder 4 and the right plate holder 5. The line connecting the two laser right-angle meters 28 and the two laser receiving positioning plates 30 forms a rectangle. The two laser receiving positioning plates 30 are arranged along one diagonal of the rectangle, and the two laser right-angle meters 28 are arranged along the other diagonal of the rectangle.

[0080] The laser right-angle device 28 is a commercially available product that can simultaneously emit two red laser beams at a right angle. The laser beam diameter is approximately 1mm, and the irradiation length is 30m, making it suitable for strong light conditions. During installation, a connecting plate 311 is installed at the end of the upper horizontal height-limiting rod 10. The connecting plate 311 is a square plate with vertically mounted connecting screws 312. The bottom of the laser right-angle device 28 has a built-in screw hole, and a connecting sleeve 313 is coaxially mounted below the screw hole. After the laser right-angle device 28 is installed using the screw hole and connecting screws 312, the connecting sleeve 313 fits over the connecting screws 312 but is not threaded into them. Simultaneously, a locking bolt 314 is vertically arranged on the connecting sleeve 313, with its head extending into the connecting sleeve 313 and abutting against the connecting screws 312, thus securing the laser right-angle device 28. The locking bolt 314 is rotated to tighten or loosen the connecting sleeve 313 of the right angle instrument, thereby achieving the purpose of locking and unlocking the laser right angle instrument 28.

[0081] The laser receiving and positioning plate 30 has a cuboid structure and serves as the target plate for receiving laser illumination emitted by the laser rectangle device 28. Laser positioning points 29 are provided on the adjacent two side surfaces of the laser receiving and positioning plate 30. Specifically, the two laser positioning points 29 are respectively arranged on two vertical planes intersecting at a 90-degree right angle, each facing one of the two laser rectangle devices 28.

[0082] Each laser right angle meter 28 emits two mutually perpendicular laser beams, which are directed towards two adjacent laser receiving positioning plates 30 and towards the laser positioning point 29. The laser right angle meter 28 angle calibration system utilizes the two right-angle laser beams emitted simultaneously by the laser right angle meter 28 to illuminate the laser positioning point 29 of the laser receiving positioning plate 30. This indicates that the connection between the left frame 4 and the right frame 5 of the rebar erection and binding formwork is at a right angle, meeting the design requirements for installation.

[0083] Because rebar erection and tying requires high precision, the erection and tying formwork itself must be manufactured with high precision to better serve the rebar erection and tying process. Therefore, the formwork is manufactured in a specialized mold, requiring that the manufacturing error of all components of the rebar erection and tying formwork be ±1mm, and the overall formwork manufacturing and assembly error be ±1mm.

[0084] like Figure 16 and Figure 17 As shown, the above-mentioned erection and binding formwork is used to carry out the construction of the pre-cast base slab with embedded steel bars. The construction steps are as follows:

[0085] Step 1: On the pre-cast concrete foundation slab, conduct precise measurement and layout every 10m interval, then conduct precise measurement and layout of the formwork positions every 2m interval, marking the horizontal position and elevation of the four corners of the rebar erection and tying formwork. Simultaneously, erect markers at the four corners of the pre-cast foundation slab at 10m intervals, attaching ropes and string lines to the markers as baselines for subsequent formwork installation.

[0086] Step 2: At the pre-embedded rebar installation location of one formwork frame on the construction site, install and tie the rebar frame. Specifically, assemble and install the qualified left frame 4 and right frame 5 at the pre-embedded rebar installation location of one formwork frame on site: including step 2.1, firstly, overlap and connect the upper horizontal connecting rod 17 and lower horizontal connecting rod 18 of the left frame 4 and right frame 5, and initially tighten them with bolts to initially form a whole formwork frame. The installation angle and position deviation of the upper horizontal connecting rod 17 and lower horizontal connecting rod 18 should not exceed ±1mm.

[0087] Step 2.2: Install the vertical scissor brace 13 on the vertical rods 6 of the left plate frame 4 and the right plate frame 5 of the mold frame, and adjust the vertical angle and dimensional deviation of the mold frame to meet the design standard requirements. The maximum deviation of the vertical angle and position of the mold frame should not exceed ±1mm.

[0088] Step 2.3: Install the horizontal scissor braces 12 and adjust the angle, size, and positional deviation of the mold frame in the horizontal direction. The upper horizontal scissor brace 19 is directly installed on the upper plane of the middle horizontal long rod 9 of the left frame 4 and right frame 5, and connected as a whole by bolts. The lower horizontal combined scissor brace 20 is a combination of separate single rods. Support rod one 201 and support rod two 202 are respectively installed on the upper plane of the lower horizontal long rod 8 of the left frame 4 and right frame 5, and connected as a whole by bolts. After installation and adjustment of the upper horizontal scissor brace 19 and the lower horizontal combined scissor brace 20, the maximum deviation of the horizontal angle and position of the mold frame should not exceed ±1mm.

[0089] Step 2.4, Adjusting the Plane Position: Adjust the adjusting screw 7 and use the plane leveling device to correct the overall elevation of the formwork. First, unscrew the cap 27 to allow the bright liquid to communicate with the atmosphere. Adjust the first adjusting screw 7 of the rebar erection and binding formwork to bring the formwork to the design elevation, and the bright liquid in the first vertical tube 24 should reach a certain scale value. Then, adjust the adjusting screws 7 at the remaining three corners of the formwork to ensure that the red liquid in the remaining three vertical tubes 24 of the plane leveling device reaches the same height scale value as the first vertical tube 24. That is, all four corners should reach the same height scale value. This indicates that the plane formed by the upper horizontal height limit rod 10 and the upper horizontal connecting rod 17 of the left frame 4 and right frame 5 is in a horizontal plane position. This means that the entire rebar erection and binding formwork is in a horizontal plane position, and the overall elevation of the formwork meets the design requirements, thus achieving the purpose of calibrating the plane position and overall elevation.

[0090] Step 2.5: Adjusting the horizontal plane right angle: After the horizontal position of the formwork plane is adjusted, the right angle of the horizontal plane of the formwork can be adjusted and corrected using the laser right angle meter 28 angle calibration system. Turn on the switch of the laser right angle meter 28, and use the two right angle laser beams emitted by the laser right angle meter 28 to irradiate the laser positioning point 29 of the laser receiving positioning plate 30 respectively. If the laser is directly irradiated on the laser positioning point 29, it indicates that the connection between the left frame 4 and the right frame 5 of the rebar erection and binding formwork is at a right angle, which meets the design requirements for installation.

[0091] When the two right-angle laser beams emitted simultaneously by the laser right-angle instrument 28 are not aligned with the laser positioning point 29 on the laser receiving positioning plate 30, it indicates that the left plate holder 4 and the right plate holder 5 are not in a right-angle state. It is necessary to readjust the position of the left plate holder 4 or the right plate holder 5, and then align the two right-angle laser beams emitted simultaneously by the laser right-angle instrument 28 with the laser positioning point 29 on the laser receiving positioning plate 30 respectively, to complete the verification of the accuracy of the right angle of the mold frame plane.

[0092] Step 2.6: Confirm that the overall elevation and verticality of the mold frame meet the design requirements. The maximum deviation of the installation elevation, angle, and position of the mold frame should not exceed ±1mm. Finally, the installation work of one mold frame in this section can be completed only after the overall angle, position, verticality, and elevation of the mold frame meet the design requirements.

[0093] Step 3: Interlocking Installation of Formwork: Repeat Step 2 to interlock and install five rebar rigging formworks per 10m interval. After installing the five formworks individually, overlap and connect adjacent rebar rigging formworks, securing them with bolts. Specifically, use upper compartment short rods 15 and lower compartment short rods 16 for connection. Overlap the upper compartment short rod 15 of the formwork to be installed onto the lower compartment short rod 16 of the adjacent formwork to form a connection. After aligning the position, secure with bolts to form a single unit between adjacent formworks. Continue until all five formworks in one interval are overlapped and installed, finally forming a complete 10m interval of five formwork units.

[0094] When connecting and installing adjacent mold frames, clean the debris from the upper compartment short rod 15 and the lower compartment short rod 16 to avoid affecting the installation accuracy. The overlapping joint surfaces of the upper compartment short rod 15 and the lower compartment short rod 16 should be precisely connected without large gaps or positional deviations. The overlapping accuracy of the upper compartment short rod 15 and the lower compartment short rod 16 of adjacent mold frames should not exceed ±1mm, and the overall position and elevation deviation of adjacent mold frames should not exceed ±1mm.

[0095] Step 4: Recheck and calibrate the precise planar position and elevation of the four corners of the 10m pre-cast base slab using the layout points. Check and calibrate the angle, position, and accuracy of the upper section of the five rebar erection and binding formwork for the first section. After meeting the design standards, proceed with the erection and binding of the vertical pre-embedded rebar 1, horizontally distributed rebar 2, and single-leg stirrups 3.

[0096] Step 5, Reinforcing Steel Frame Erection and Tying: First, thread the horizontally distributed reinforcing bars 2 through the open ends of the formwork from the front or rear of the formwork between the five formwork frames. Then, place the vertically embedded reinforcing bars 1 into the reinforcing steel slot plates 11 at both ends and in the middle of each formwork frame. Use concrete blocks and thin iron plates to adjust the height of the vertically embedded reinforcing bars 1 from the bottom, ensuring that the top of the vertically embedded reinforcing bars 1 is flush with the upper horizontal height limit bar 10. Use tie wire to temporarily fix the vertically embedded reinforcing bars 1 at both ends and in the middle to the reinforcing steel slot plates 11 to make them stand upright. Figure 16 As shown. The vertical pre-embedded steel bar 1 should be completely inserted into the U-shaped groove 111 with a deviation of ±1mm. The top of the vertical pre-embedded steel bar 1 should be limited in height by the horizontal height limit bar 10 with an elevation deviation of ±1mm.

[0097] After all the vertical pre-embedded steel bars 1 placed in the five formwork frames of a 10m section have been placed, the horizontal distribution steel bars 2 are used to tie and securely connect them to the vertical pre-embedded steel bars 1 placed in each formwork frame. Then the remaining vertical pre-embedded steel bars 1 are placed and securely connected to the horizontal distribution steel bars 2 to form a standing steel mesh.

[0098] After all the vertical embedded steel bars 1 and horizontal distributed steel bars 2 are erected and tied, forming a steel mesh of 5 formwork frames per 10m section, single-leg stirrups 3 are used to connect the left and right steel meshes to form a complete three-dimensional steel frame, as shown. Figure 17 As shown.

[0099] When erecting and binding reinforcing bars, the vertical embedded reinforcing bars 1 should have sufficient support points, and the number of support beams should not be less than 50% of the number of vertical embedded reinforcing bars 1. The connections between the vertical embedded reinforcing bars 1, the horizontal distributed reinforcing bars 2, and the single-leg stirrups 3 should be firmly welded together, with at least 50% of the connections being welded. The remaining connections can be tied with wire or binding fasteners, ensuring that the tying is secure. The number of single-leg stirrups 3 connected to the vertical embedded reinforcing bars 1 and the horizontal distributed reinforcing bars 2 should not be less than 50%, with at least 5 on each horizontal level of each formwork, and all should be firmly welded together to ensure the overall robustness.

[0100] Step 6: Conduct inspection and acceptance of the steel reinforcement frame: Step 6.1: After all the steel reinforcement in the 5 formwork frames of each compartment is tied, conduct inspection and acceptance of the steel reinforcement. Check whether the welding and tying of each steel reinforcement node is firm, whether the position and elevation accuracy meet the design requirements, and check whether the pads at the bottom of the vertical pre-embedded steel reinforcement 1 are firmly supported. Only after all are qualified can the next process be carried out.

[0101] Step 6.2: After passing the inspection, drive multiple ground anchor bars into the pre-cast base slab. The ground anchor bars are spaced 1-1.3m apart. The entire steel frame is connected and fixed by the ground anchor bars to prevent the steel bars from shifting due to external impact.

[0102] Step 6.3: Finally, dismantle the formwork. Dismantle in the order of installation first, then removal; that is, first dismantle the upper horizontal scissor brace 19 as a whole, then dismantle the lower horizontal combined scissor brace 20's support rods 201 and 202 individually, then dismantle the two vertical scissor braces 13 as a whole, and finally remove the bolts connecting the upper horizontal connecting rod 17 and the lower horizontal connecting rod 18. Pull the left frame 4 and right frame 5 out from between the reinforcing bars. This completes the dismantling of the entire formwork. Handle the formwork gently during dismantling, taking care to protect the formwork and reinforcing bars to prevent deformation. After dismantling, check the integrity of each component. If no damage is found, the formwork can be reused for the next cycle of formwork installation.

[0103] Step 6.4: After the vertical pre-embedded steel bars 1, horizontal distribution steel bars 2 and single-leg stirrups 3 at the corresponding positions of the 5 side wall components in the 10m section are tied, the steel bars of the middle part of the first-cast bottom slab can be tied after the formwork is removed, so that the steel bar tying of the first-cast bottom slab is completed.

[0104] The above construction steps and methods have the advantages of quick and convenient erection and binding of pre-embedded steel bars, high precision, simple structure, easy use, strong adaptability, low cost and reusability. They can be widely used in the construction industry, especially in the erection and binding of pre-embedded steel bars in the pre-cast bottom slab of prefabricated bottom-wall prefabricated channels, meeting the requirements of construction precision and construction progress.

[0105] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A precision rebar erection and binding formwork for positioning and elevation control of pre-embedded rebars, characterized in that, Includes a left frame (4) with an upper horizontal connecting rod (17), a right frame (5) with a lower horizontal connecting rod (18), a horizontal scissor brace (12) and a vertical scissor brace (13) for connecting the left frame (4) and the right frame (5), and a plane leveling device and a laser right angle instrument calibration system for template correction; The left frame (4) and right frame (5) are arranged symmetrically on the left and right sides. Both the left frame (4) and right frame (5) include a vertical rod (6), an adjusting screw (7), a lower horizontal long rod (8), a middle horizontal long rod (9), an upper horizontal height limiting rod (10), and a steel bar slot plate (11). The number of vertical poles (6) is multiple poles arranged in parallel. Each vertical pole (6) is provided with an adjusting screw (7) at the lower end for adjusting the height of the vertical pole (6). Between the multiple vertical poles (6), an upper horizontal height limiting pole (10), a middle horizontal long pole (9) and a lower horizontal long pole (8) are arranged in parallel in the upper, middle and lower order. Multiple steel bar slot plates (11) are provided on the middle horizontal long pole (9) and the lower horizontal long pole (8) in a straight line. The left frame (4) and the right frame (5) are assembled and fixed by an upper horizontal connecting rod (17) and a lower horizontal connecting rod (18). The left frame (4) and the right frame (5) are also provided with horizontal scissor braces (12) and vertical scissor braces (13) to improve the reliability of the connection.

2. The precision rebar erection and binding formwork according to claim 1, characterized in that, The length of the middle horizontal long rod (9) is the same as that of the lower horizontal long rod (8). Both the middle horizontal long rod (9) and the lower horizontal long rod (8) include a middle section rod (14), an upper compartment short rod (15), and a lower compartment short rod (16). The length of the middle section pole (14) is the same as the length of the upper horizontal height limit pole (10). The upper compartment short pole (15) and the lower compartment short pole (16) are respectively set at both ends of the middle section pole (14). The upper compartment short pole (15) and the middle section pole (14) are connected in parallel, and the lower compartment short pole (16) and the middle section pole (14) are connected in a staggered manner.

3. The precision rebar erection and binding formwork according to claim 2, characterized in that, The steel bar slot plates (11) on the middle horizontal long rod (9) and the lower horizontal long rod (8) are in one-to-one correspondence. The steel bar slot plates (11) are arranged on the middle section rod (14), the upper compartment short rod (15) and the lower compartment short rod (16). The steel bar slot plate (11) is a plate with a U-shaped slot (111) on the edge.

4. The precision rebar erection and binding formwork according to claim 1, characterized in that, The left frame (4) is provided with multiple upper horizontal connecting rods (17), and the right frame (5) is provided with multiple lower horizontal connecting rods (18). The upper horizontal connecting rods (17) and the lower horizontal connecting rods (18) correspond one to one. The corresponding upper horizontal connecting rods (17) and lower horizontal connecting rods (18) overlap vertically and are fixed by bolts.

5. A precision rebar erection and binding formwork according to claim 1, characterized in that, The horizontal scissor bracing (12) includes an upper horizontal scissor bracing (19) and a lower horizontal combined scissor bracing (20) arranged in parallel. The upper horizontal scissor bracing (19) is detachably disposed between the upper part of the left panel frame (4) and the right panel frame (5), and the lower horizontal combined scissor bracing (20) is detachably disposed between the lower part of the left panel frame (4) and the right panel frame (5).

6. A precision rebar erection and binding formwork according to claim 5, characterized in that, The number of the vertical scissors braces (13) is two which are arranged in parallel front and back, and the two vertical scissors braces (13) are respectively detachably arranged between the front and the back of the left frame (4) and the right frame (5).

7. A precision rebar erection and binding formwork according to claim 1, characterized in that, The plane level corrector includes a vertical tube height scale column (222) with a vertical tube height scale (221), a level tube (23) filled with a bright-colored liquid, and a vertical tube (24). The vertical tube height scale columns (222) are vertically arranged at both ends of the upper horizontal height-limiting rods (10) of the left frame (4) and the right frame (5); The level tube (23) bent in a "U" shape is arranged at the top of the left frame (4) or the right frame (5). The vertical tubes (24) are communicated with the four corners of the level tube (23). A plug cap (27) is arranged at the top of the vertical tube (24). The four vertical tubes (24) and the four vertical tube height scale columns (222) are arranged in parallel one by one corresponding to each other.

8. A precision rebar erection and binding formwork according to claim 1, characterized in that, The laser right-angle instrument calibration system includes a laser right-angle instrument (28) and a laser receiving and positioning plate (30) with two laser positioning points (29). The laser right-angle instrument (28) and the laser receiving and positioning plate (30) are respectively arranged at both ends of the upper horizontal height-limiting rods (10) of the left frame (4) and the right frame (5). The two laser receiving and positioning plates (30) are arranged in a diagonal line of a rectangle, and the two laser right-angle instruments (28) are arranged in the other diagonal line of the rectangle. Two mutually perpendicular laser beams emitted by each laser right-angle instrument (28) are respectively shot at the adjacent two laser receiving and positioning plates (30).

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