A grid steel frame rapid processing platform and processing method

Abstract

The present invention discloses a grid steel frame rapid processing platform and processing method, the processing platform includes a horizontal support platform and a plurality of main reinforcement positioning molds, the plurality of main reinforcement positioning molds are arranged along the circumferential direction and are all installed on the horizontal support platform; the plurality of main reinforcement positioning molds constitute a main reinforcement positioning device for positioning four main reinforcements in a steel frame segment to be processed, each main reinforcement positioning mold includes a sliding seat, a connecting seat and a main reinforcement positioning mechanism; the method includes the following steps: 1. adjusting the main reinforcement positioning mechanism; 2. adjusting the position of the main reinforcement positioning mold; 3. installing the main reinforcement; 4. fixing the main reinforcement connecting reinforcement; 5. fixing the rectangular stirrup. The present invention has reasonable design, simple reinforcement and good use effect, and adopts a plurality of movable main reinforcement positioning molds to position the steel frame segment, and the main reinforcement positioning mechanism on each main reinforcement positioning mold can be adjusted according to the width and thickness of the processed steel frame segment, which can meet the processing requirements of steel frame segments of different specifications.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel grid steel frame processing, and in particular relates to a grid steel frame rapid processing platform and a processing method. Background Art

[0002] Tunnel arch frame refers to the steel support used to support the cave body or shelter during the construction of tunnel projects (such as highway tunnel projects, railway tunnel projects, military concealed projects, mines, coal mines, iron mines and other tunnels, hydropower station diversion tunnels and other projects). It is generally made of steel sections or steel bars according to a certain curvature and length, and made into individual units. Then it is installed at the construction site, and then the anchor rods are installed, the longitudinal connecting steel bars are welded, and the steel mesh is welded. Finally, the shotcrete construction is carried out. After the anchor spraying is completed, the initial support in the tunnel construction is completed. Tunnel arch frames mainly include two types: steel section arch frames and grille arch frames. Among them, grille arch frames are also called grille steel frames. Grille arch frames are made of steel bars. According to common knowledge in the field, grille arch frames are composed of four main bars, eight-shaped bars, U-shaped bars, turn bars and angle steel connecting plates. Among them, the figure-eight reinforcement is the core component connecting the four main reinforcements and is the longitudinal connecting reinforcement (also called main reinforcement connecting reinforcement) for fastening the four main reinforcements. It is mainly processed by a figure-eight reinforcement forming machine, and the figure-eight reinforcement is embossed by a figure-eight reinforcement forming machine.

[0003] At present, when constructing a tunnel, the processing of the grid arch frame (i.e., grid steel frame) mainly has the following problems: First, the number of grid steel frames used in the initial support of the tunnel is huge, and the processing volume of the grid steel frames is large: each grid steel frame is spliced ​​by multiple steel frame segments, and multiple segments of the grid steel frame need to be processed separately, which further increases the processing volume of the grid arch frame. The processing process is labor-intensive and time-consuming, and requires a large processing cost. The investment of manpower and material resources is very large, especially when constructing a long tunnel, the processing volume of the grid arch frame is even greater; Second, the specifications of the grid steel frames used in the initial support of the tunnel are very many: different enclosures in the same tunnel have different processing requirements. Different specifications of grid steel frames need to be adopted in tunnel sections with different rock levels, and the structures and sizes of the grid steel frames supported on tunnel sections with different structures and different settlement amounts are different, resulting in a large number of specifications of grid steel frames, which further increases the difficulty of grid steel frame processing; thirdly, since tunnel construction is carried out based on advanced geological forecasts and monitoring measurement information, different geological conditions require dynamic adjustment of the reserved deformation of the corresponding tunnel section, which causes the specifications and sizes of grid steel frame processing to change accordingly, and the number of grid steel frames that need to be processed each time is not large, and mass production cannot be achieved. The uncertainty of the process leads to intermittent handover, which further affects the processing speed and quality of the grid steel frame, making the processing of the grid steel frame more difficult; Fourth, when processing the grid steel frame of the same specification, a set of molds with the same structure and size as the processed grid steel frame is required for processing. Since there are many specifications of the grid steel frame to be processed, the number of molds required is huge, the processing volume of the molds is huge, and the investment cost of the molds is very high; Fifth, when using the mold to process the grid steel frame, an I-beam with the same curvature as the processed steel frame is usually used as the curvature reference base for processing. The curvature reference base processing Inconvenience, low processing efficiency and serious waste. At the same time, the processing quality of the curvature reference base is not easy to guarantee and the proficiency and processing skills of the processing personnel are very high. It takes more than 3 days for a skilled worker to process a set of molds. The mold processing cost is very high and it is labor-intensive and time-consuming. Sixth, when the mold is used to process the grid steel frame, the curvature reference base and main reinforcement positioning plate used can only match one specification of grid steel frame, and the curvature reference base and main reinforcement positioning plate cannot be converted by adjustment, which further increases the processing difficulty and the processing efficiency is low. Sixth, the number of molds required is large, and the problems of storage and transportation are prominent. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a grid steel frame rapid processing platform in view of the deficiencies in the above-mentioned prior art. The platform has a simple structure, a reasonable design, is easy to use and has a good use effect. A plurality of movable main reinforcement positioning molds are used to position the processed steel frame segments. The main reinforcement positioning mechanism on each main reinforcement positioning mold can be adjusted according to the width and thickness of the processed steel frame segments, and can meet the processing requirements of steel frame segments of different lengths, different radii, different thicknesses and different widths.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a grid steel frame rapid processing platform, characterized in that: it includes a horizontal support platform and a plurality of main rib positioning molds that synchronously position the steel frame segments to be processed, the plurality of main rib positioning molds are arranged along the circumferential direction and are all installed on the horizontal support platform, the structures and sizes of the plurality of main rib positioning molds are the same, the steel frame segments to be processed are arranged horizontally and are located above the horizontal support platform;

[0006] The steel frame segment to be processed is a steel frame segment in a grid steel frame for initially supporting a tunnel hole, the grid steel frame includes an arch wall bracket for supporting an arch wall of the tunnel hole, and the shape of the arch wall bracket is the same as the cross-sectional shape of the arch wall of the tunnel hole; the arch wall bracket is formed by splicing a plurality of the steel frame segments, and the plurality of the steel frame segments are arranged along the arch wall excavation contour line of the tunnel hole, and each of the steel frame segments is arc-shaped;

[0007] Each of the steel frame segments includes four main bars, a plurality of main bar connecting bars and a plurality of rectangular stirrups. The four main bars are arranged in parallel and have the same diameter. Each of the main bars is an arc-shaped steel bar and has the same shape as the steel frame segment in which it is located. The plurality of main bar connecting bars and the plurality of rectangular stirrups are arranged from front to back along the length direction of the steel frame segment in which they are located. Each of the rectangular stirrups is hooped on the outside of the four main bars. The four main bars are arranged on the four top corners of a rectangular stirrup respectively. Each of the main bar connecting bars is welded and fixed to the four main bars as a whole. The four main bars include two outer steel bars and two inner steel bars. The structure of the two outer steel bars is The two inner steel bars have the same structure and size and are arranged on the same arc surface. The two inner steel bars have the same structure and size and are arranged on the same arc surface. An inner steel bar is arranged on the inner side of each outer steel bar. Each outer steel bar and the inner steel bar arranged on its inner side are arranged on the same tunnel cross section of the tunnel hole. The spacing between each outer steel bar and the inner steel bar arranged on its inner side is H, where H is the thickness of the grid steel frame, and the value range of H is 15cm to 25cm. The spacing between the two outer steel bars and between the two inner steel bars is B, where B is the width of the grid steel frame, and the value range of B is 15cm to 25cm.

[0008] A plurality of main reinforcement positioning molds constitute a main reinforcement positioning device for positioning four main reinforcements in a steel frame segment to be processed, the structures of the plurality of main reinforcement positioning molds are the same and they are arranged on the same horizontal plane, the horizontal support platform is provided with a plurality of movable grooves for the main reinforcement positioning molds to move horizontally inward and outward, and the movable grooves are straight grooves; each of the main reinforcement positioning molds is installed on a movable groove, and each of the main reinforcement positioning molds is arranged along the center line of the movable groove on which it is installed; the plurality of main reinforcement positioning molds are arranged on the same arc line, and the plurality of main reinforcement positioning molds are arranged from left to right along the arc line, and the center lines of the plurality of movable grooves intersect at the center of the arc line, and the center of the circle is located on the inner side of the horizontal support platform; the number of movable grooves is the same as the number of main reinforcement positioning molds;

[0009] Each of the main reinforcement positioning molds includes a sliding seat that moves horizontally along the moving groove, a connecting seat installed on the sliding seat and capable of synchronously moving the sliding seat horizontally, and a main reinforcement positioning mechanism that respectively positions the four main reinforcements in the steel frame segment to be processed, and the main reinforcement positioning mechanism is installed on the connecting seat; the sliding seat is installed in one of the moving grooves, the sliding seat is located below the steel frame segment to be processed, and the connecting seat is located outside the steel frame segment to be processed; each of the connecting seats is located outside one of the moving grooves;

[0010] The main reinforcement positioning mechanism includes two upper and lower limit rods that are both horizontally arranged, the two limit rods have the same structure and size, and the two limit rods are arranged on the same vertical plane; each of the limit rods includes a horizontal support rod, and each of the horizontal support rods is coaxially equipped with two inner and outer limit members that can move horizontally on the horizontal support rod, and the two limit members have the same structure and size; the two horizontal support rods in the main reinforcement positioning mechanism are arranged on the same vertical plane, and the outer ends of the two horizontal support rods are installed on the connecting seat; the two horizontal support rods in the main reinforcement positioning mechanism are respectively a lower support rod and an upper support rod located above the lower support rod, and the The limit piece installed on the upper support rod is an upper limit piece, and the limit piece installed on the lower support rod is a lower limit piece. A lower limit piece is arranged directly below each upper limit piece, and the two limit pieces on each horizontal support rod are respectively an outer limit piece and an inner limit piece located on the inner side of the outer limit piece; each limit piece is provided with a limit groove for limiting the main reinforcement of the steel frame segment to be processed, and the limit groove is a circular ring and its cross section is an arc; the four limit pieces of the main reinforcement positioning mechanism are respectively arranged on the four vertices of a rectangle, and each main reinforcement of the steel frame segment to be processed is clamped in a limit groove of a limit piece;

[0011] Each of the main reinforcement positioning mechanisms is located directly above a movable groove, and the two horizontal support rods of each of the main reinforcement positioning mechanisms are arranged on the same vertical plane as a movable groove directly below it, and the two horizontal support rods of each of the main reinforcement positioning mechanisms are arranged along the length direction of the movable groove directly below it;

[0012] The two horizontal support rods in the main reinforcement positioning mechanism constitute a steel frame width adjustment mechanism for adjusting the width B of the steel frame segment to be processed, the two limit members on each horizontal support rod constitute a steel frame thickness adjustment unit for adjusting the thickness H of the steel frame segment to be processed, and the two steel frame thickness adjustment units in the main reinforcement positioning mechanism constitute a steel frame thickness adjustment mechanism.

[0013] The above-mentioned grid steel frame rapid processing platform is characterized in that: the number of the main reinforcement positioning molds is three;

[0014] The three main rib positioning molds include a middle mold and two symmetrically arranged side molds on the left and right.

[0015] The above-mentioned grid steel frame rapid processing platform is characterized in that: a connecting steel plate is installed at both ends of the steel frame segment to be processed, and two adjacent steel frame segments in the grid steel frame are connected by the connecting steel plate;

[0016] It also includes two left and right steel plate positioning seats, both of which are installed on the horizontal support platform and are used to position the connecting steel plates. The two steel plate positioning seats are arranged on the left and right sides of the steel frame segment to be processed;

[0017] The two connecting steel plates on the steel frame segment to be processed are clamped between the two steel plate positioning seats, each connecting steel plate is supported on one steel plate positioning seat, and each connecting steel plate is arranged in parallel with the steel plate positioning seat it supports;

[0018] One of the two steel plate positioning seats is a fixed positioning seat, and the other steel plate positioning seat is a movable positioning seat.

[0019] The above-mentioned grid steel frame rapid processing platform is characterized in that: the grid steel frame also includes a tunnel bottom bracket for supporting the bottom of the tunnel, and the shape of the tunnel bottom bracket is the same as the cross-sectional shape of the bottom of the tunnel; the tunnel bottom bracket is spliced ​​by multiple steel frame segments, and the multiple steel frame segments of the tunnel bottom bracket are arranged along the bottom excavation contour line of the tunnel.

[0020] The above-mentioned grid steel frame rapid processing platform is characterized in that: the horizontal support platform includes a rectangular support platform and four support columns supporting the rectangular support platform, the four support columns are arranged vertically, and the rectangular support platform is arranged horizontally; each of the support columns is supported at the bottom of the rectangular support platform.

[0021] The above-mentioned grid steel frame rapid processing platform is characterized in that each of the main reinforcement positioning molds also includes a moving drive mechanism that drives the sliding seat to move horizontally, and the moving drive mechanism is connected to the sliding seat.

[0022] The above-mentioned grid steel frame rapid processing platform is characterized in that the horizontal support rod is a steel screw, and the horizontal support rod and the limiting member installed thereon are connected in a threaded manner.

[0023] The above-mentioned grid steel frame rapid processing platform is characterized in that: the lower support rod is a fixed support rod with the outer end fixed on the connecting seat, and the upper support rod is a movable support rod that can move up and down in the vertical direction.

[0024] At the same time, the present invention also discloses a grid steel frame rapid processing method with simple method steps, reasonable design, simple processing, good processing effect, and easy to ensure processing quality, characterized in that: a grid steel frame rapid processing platform is used to process a plurality of steel frame segments of the processed grid steel frame respectively, and the processing methods of the plurality of steel frame segments are the same;

[0025] When processing any of the steel frame segments, the following steps are included:

[0026] Step 1: Adjust the main reinforcement positioning mechanism: according to the width B and thickness H of the processed grid steel frame, adjust the plurality of main reinforcement positioning mechanisms respectively, and the adjustment methods of the plurality of main reinforcement positioning mechanisms are the same; the processed steel frame segment is the steel frame segment to be processed;

[0027] When adjusting any of the main reinforcement positioning mechanisms, the spacing between the two horizontal support rods in the adjusted main reinforcement positioning mechanism is adjusted according to the width B of the processed grid steel frame, so that the spacing between the two horizontal support rods is adjusted to B; at the same time, according to the thickness H of the processed grid steel frame, the spacing between the two limiting members on each horizontal support rod in the adjusted main reinforcement positioning mechanism is adjusted, so that the spacing between the two limiting members on each horizontal support rod is adjusted to H, and a lower limiting member is evenly arranged directly below each upper limiting member;

[0028] Step 2: Adjust the position of the main reinforcement positioning mold: according to the radius of the processed steel frame segment, the plurality of main reinforcement positioning molds are horizontally moved inward and outward respectively, and the plurality of main reinforcement positioning molds are located on the same arc line;

[0029] Step 3, main reinforcement installation: the four main reinforcements of the processed steel frame segment are installed on the plurality of main reinforcement positioning molds in step 2, so that each outer layer of the processed steel frame segment is supported on the plurality of outer limiters located on the same horizontal plane, and each inner layer of the processed steel frame segment is supported on the plurality of inner limiters located on the same horizontal plane;

[0030] Step 4: Fixing the main reinforcement connecting ribs: After the four main reinforcements of the processed steel frame segment are installed, the multiple main reinforcement connecting ribs on the processed steel frame segment are respectively welded and fixed;

[0031] Step 5: Fixing the rectangular stirrups: fix the multiple rectangular stirrups on the processed steel frame segment separately.

[0032] The above method is characterized in that: a connecting steel plate is installed at both ends of the steel frame segment to be processed, and two adjacent steel frame segments in the grid steel frame are connected by the connecting steel plate;

[0033] The grid steel frame rapid processing platform also includes two left and right steel plate positioning seats, both of which are installed on the horizontal support platform and are used to position the connecting steel plates. The two steel plate positioning seats are arranged on the left and right sides of the steel frame segment to be processed;

[0034] The two connecting steel plates on the steel frame segment to be processed are clamped between the two steel plate positioning seats, each connecting steel plate is supported on one steel plate positioning seat, and each connecting steel plate is arranged in parallel with the steel plate positioning seat it supports;

[0035] One of the two steel plate positioning seats is a fixed positioning seat, and the other steel plate positioning seat is a movable positioning seat;

[0036] Before installing the main reinforcement in step 3, the layout positions of the two steel plate positioning seats need to be adjusted respectively according to the arc length of the processed steel frame segment;

[0037] When the main reinforcement is processed in step 3, both ends of each main reinforcement in the processed steel frame segment are installed on one of the steel plate positioning seats;

[0038] When the rectangular stirrups are fixed in step 5, the fixing methods of the plurality of rectangular stirrups are the same;

[0039] When fixing any of the rectangular stirrups on the processed steel frame segment, a steel bar bending tool is used to bend a straight steel bar around the four main bars in step three to form a rectangular stirrup;

[0040] The steel bar bending tool includes a straight handle and a V-shaped bending piece arranged at the front end of the straight handle, and the V-shaped bending piece is located directly in front of the straight handle; the V-shaped bending piece includes two symmetrically arranged clamping pieces, and the cavity between the rear parts of the two clamping pieces is a clamping hole for clamping the bent straight steel bars, and the two clamping pieces are both hooks that can be hooked on a main bar in the steel frame segment to be processed.

[0041] Compared with the prior art, the present invention has the following advantages:

[0042] 1. The grid steel frame rapid processing platform has a simple structure, reasonable design, easy processing and manufacturing, and low investment cost.

[0043] 2. The adopted horizontal support platform has a simple structure and stable support, which can provide a stable support for the steel frame segment and a relatively closed and safe installation cavity for the mobile drive mechanism and the sliding seat.

[0044] 3. The main reinforcement positioning mold used has a reasonable structural design, is easy to process and easy to operate, and can be easily and quickly translated. The main reinforcement positioning mechanism on each main reinforcement positioning mold can be adjusted according to the width and thickness of the processed steel frame segment, and can meet the processing requirements of steel frame segments of different lengths, different radii, different thicknesses and different widths.

[0045] 4. It is easy to operate, has a simple processing method and good use effect. It uses multiple movable main reinforcement positioning molds to position the processed steel frame segments, and can meet the processing requirements of steel frame segments of different specifications. The processing quality is easy to ensure, and can effectively solve the problems of the huge number of molds required in the processing of existing grid steel frames, the prominent problems of mold storage and relocation, and low processing efficiency. It solves the problem that a set of molds is required to process a grid steel frame, and it is no longer necessary to use a cold bending machine to process I-beams as a reference base. The same type of arch frames of different specifications only need one processing platform, which solves the problems of mold storage and relocation. At the same time, the main reinforcement positioning mold is changed from a fixed form template to a freely adjustable mold to meet the processing requirements of arch frame segments of all specifications; and it can effectively improve the efficiency of arch frame reinforcement and construction, and realize the rapid prototyping of grid steel frames.

[0046] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the processing state of the grid steel frame rapid processing platform of the present invention.

[0048] Figure 2 It is a schematic diagram of the vertical surface processing state of the grid steel frame rapid processing platform of the present invention.

[0049] Figure 3 It is a schematic diagram of the plane processing state of the grid steel frame rapid processing platform of the present invention.

[0050] Figure 4 It is a schematic diagram of the planar layout positions of three movable slots in the grid steel frame rapid processing platform of the present invention.

[0051] Figure 5 It is a schematic diagram of the internal structure of the rectangular support platform of the present invention.

[0052] Figure 6 It is a structural schematic diagram of the main reinforcement positioning mold of the present invention.

[0053] Figure 7 It is a schematic diagram of the side structure of the main reinforcement positioning mold of the present invention.

[0054] Figure 8 It is a structural schematic diagram of the main reinforcement positioning mechanism, the connecting seat and the connecting plate of the present invention.

[0055] Fig. 9 The figure is a schematic diagram of the arrangement positions of the long strip holes on the connecting seat of the present invention.

[0056] Fig.10 It is a schematic elevational structural diagram of the main reinforcement positioning mechanism, the connecting seat and the connecting plate of the present invention.

[0057] Fig.11 It is a schematic diagram of the planar structure of the fixed positioning seat of the present invention.

[0058] Fig.12 It is a schematic diagram of the elevation structure of the fixed positioning seat of the present invention.

[0059] Fig.13 It is a schematic diagram of the side structure of the fixed positioning seat of the present invention.

[0060] Fig.14 It is a schematic diagram of the planar structure of the movable positioning seat of the present invention.

[0061] Fig.15 It is a schematic diagram of the planar structure of the steel bar bending tool of the present invention.

[0062] Fig.16 It is a schematic diagram of the elevation structure of the steel bar bending tool of the present invention.

[0063] Fig.17 The present invention is a flowchart of a method for processing a steel frame segment.

[0064] Fig.18 This is a schematic diagram of the processing state before the rectangular stirrups are bent for the first time using a steel bar bending tool according to the present invention.

[0065] Fig.19This is a schematic diagram of the processing state after the rectangular stirrups are bent for the first time using a steel bar bending tool in the present invention.

[0066] Fig. 20 This is a schematic diagram of the positional relationship between the steel bar bending tool, the main bars and the straight steel bars after the rectangular stirrups are bent for the first time according to the present invention.

[0067] Fig.21 This is a schematic diagram of the processing state before the rectangular stirrups are bent for the second time using a steel bar bending tool according to the present invention.

[0068] Fig. 22 This is a schematic diagram of the processing state after the rectangular stirrups are bent for the second time using a steel bar bending tool in the present invention.

[0069] Fig.23 This is a schematic diagram of the processing state before the third bending of the rectangular stirrup by the steel bar bending tool of the present invention.

[0070] Fig.24 This is a schematic diagram of the processing state after the rectangular stirrup is bent for the third time using a steel bar bending tool in the present invention.

[0071] Fig.25 This is a schematic diagram of the supporting state of the grid steel frame processed by the present invention.

[0072] Description of reference numerals:

[0073] 1—segment of steel frame to be processed; 1-11—outer steel bars; 1-12—inner steel bars;

[0074] 1-2—rectangular stirrups; 1-3—splayed reinforcement; 1-4—butterfly reinforcement;

[0075] 2—main reinforcement positioning mold; 2-1—sliding seat; 2-2—connecting seat;

[0076] 2-3—main reinforcement positioning mechanism; 2-31—horizontal support rod; 2-32—limiting groove;

[0077] 2-33—limiting member; 3—horizontal support platform; 3-1—rectangular support platform;

[0078] 3-11—upper support plate; 3-12—lower support plate; 3-13—straight rod;

[0079] 3-2—support column; 4—moving slot; 5—horizontal slide;

[0080] 6—cylinder; 7—bottom hinge seat; 8—hinge shaft;

[0081] 9—side hinged seat; 10—vertical connecting plate; 11—connecting bolt;

[0082] 12—limiting nut; 13—upper mounting hole; 14—long strip mounting hole;

[0083] 15—Steel plate positioning seat; 15-1—Horizontal base; 15-2—Vertical limit plate;

[0084] 15-3—vertical stiffening rib plate; 16—connecting steel plate; 17—tunnel hole;

[0085] 18—arch wall bracket; 19—tunnel bottom bracket; 20—through hole;

[0086] 21—horizontal sliding groove; 22—steel bending tool; 22-1—straight handle;

[0087] 22-2—clamping piece; 22-3—clamping hole; 23—straight steel bar. DETAILED DESCRIPTION

[0088] like Figure 1 , Figure 2 and Figure 3 A grid steel frame rapid processing platform shown includes a horizontal support platform 3 and a plurality of main rib positioning molds 2 for synchronously positioning a steel frame segment 1 to be processed, wherein the plurality of main rib positioning molds 2 are arranged along a circumferential direction and are all installed on the horizontal support platform 3, and the plurality of main rib positioning molds 2 have the same structure and size, and the steel frame segment 1 to be processed is arranged horizontally and is located above the horizontal support platform 3;

[0089] Combination Fig.25 The steel frame segment 1 to be processed is a steel frame segment in a grid steel frame for initially supporting a tunnel hole 17, and the grid steel frame includes an arch wall bracket 18 for supporting an arch wall of the tunnel hole 17, and the shape of the arch wall bracket 18 is the same as the cross-sectional shape of the arch wall of the tunnel hole 17; the arch wall bracket 18 is formed by splicing a plurality of the steel frame segments, and the plurality of the steel frame segments are arranged along the arch wall excavation contour line of the tunnel hole 17, and each of the steel frame segments is arc-shaped;

[0090] Each of the steel frame segments includes four main bars, a plurality of main bar connecting bars and a plurality of rectangular stirrups 1-2. The four main bars are arranged in parallel and have the same diameter. Each of the main bars is an arc-shaped steel bar and has the same shape as the steel frame segment in which it is located. The plurality of main bar connecting bars and the plurality of rectangular stirrups 1-2 are arranged from front to back along the length direction of the steel frame segment in which they are located. Each of the rectangular stirrups 1-2 is hooped on the outside of the four main bars. The four main bars are arranged on the four top corners of a rectangular stirrup 1-2 respectively. Each of the main bar connecting bars is welded and fixed to the four main bars as a whole. The four main bars include two outer steel bars 1-11 and two inner steel bars 1-12. The structures and sizes of the two outer steel bars 1-11 are the same and The two are arranged on the same arc surface, the structures and sizes of the two inner steel bars 1-12 are the same and the two are arranged on the same arc surface, an inner steel bar 1-12 is arranged on the inner side of each outer steel bar 1-11, each outer steel bar 1-11 and the inner steel bar 1-12 arranged on its inner side are arranged on the same tunnel cross section of the tunnel hole 17, and the spacing between each outer steel bar 1-11 and the inner steel bar 1-12 arranged on its inner side is H, where H is the thickness of the grid steel frame, and the value range of H is 15cm to 25cm; the spacing between the two outer steel bars 1-11 and the two inner steel bars 1-12 is B, where B is the width of the grid steel frame, and the value range of B is 15cm to 25cm;

[0091] A plurality of main reinforcement positioning molds 2 constitute a main reinforcement positioning device for positioning the four main reinforcements in the steel frame segment 1 to be processed. The structures of the plurality of main reinforcement positioning molds 2 are the same and they are arranged on the same horizontal plane. The horizontal support platform 3 is provided with a plurality of movable grooves 4 for the main reinforcement positioning molds 2 to move horizontally inward and outward, and the movable grooves 4 are straight grooves; each of the main reinforcement positioning molds 2 is installed on a movable groove 4, and each of the main reinforcement positioning molds 2 is arranged along the center line of the movable groove 4 on which it is installed; the plurality of main reinforcement positioning molds 2 are arranged on the same arc line, and the plurality of main reinforcement positioning molds 2 are arranged from left to right along the arc line, and the center lines of the plurality of movable grooves 4 intersect at the center of the arc line (i.e., the center O), and the center is located on the inner side of the horizontal support platform 3; the number of movable grooves 4 is the same as the number of main reinforcement positioning molds 2, see for details. Figure 4 ;

[0092] Combination Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10Each of the main rib positioning molds 2 includes a sliding seat 2-1 that moves horizontally along a moving groove 4, a connecting seat 2-2 installed on the sliding seat 2-1 and capable of synchronously moving the sliding seat 2-1 horizontally, and a main rib positioning mechanism 2-3 that respectively positions the four main ribs in the steel frame segment 1 to be processed, and the main rib positioning mechanism 2-3 is installed on the connecting seat 2-2; the sliding seat 2-1 is installed in one of the moving grooves 4, the sliding seat 2-1 is located below the steel frame segment 1 to be processed, and the connecting seat 2-2 is located outside the steel frame segment 1 to be processed; each of the connecting seats 2-2 is located outside one of the moving grooves 4;

[0093] The main reinforcement positioning mechanism 2-3 includes two upper and lower limit rods that are both horizontally arranged, the two limit rods have the same structure and size, and the two limit rods are arranged on the same vertical plane; each of the limit rods includes a horizontal support rod 2-31, and each of the horizontal support rods 2-31 is coaxially sleeved with two inner and outer limit members 2-33 that can move horizontally on the horizontal support rod 2-31, and the two limit members 2-33 have the same structure and size; the two horizontal support rods 2-31 in the main reinforcement positioning mechanism 2-3 Arranged on the same vertical plane, the outer ends of the two horizontal support rods 2-31 are installed on the connecting seat 2-2; each of the limiting members 2-33 is provided with a limiting groove 2-32 for limiting the main reinforcement of the steel frame segment 1 to be processed, and the limiting groove 2-32 is circular and its cross section is arc-shaped; the four limiting members 2-33 of the main reinforcement positioning mechanism 2-3 are respectively arranged on the four vertices of a rectangle, and each main reinforcement of the steel frame segment 1 to be processed is clamped in the limiting groove 2-32 of a limiting member 2-33;

[0094] Each of the main reinforcement positioning mechanisms 2-3 is located directly above a movable groove 4, and the two horizontal support rods 2-31 of each of the main reinforcement positioning mechanisms 2-3 are arranged on the same vertical plane as the movable groove 4 directly below it, and the two horizontal support rods 2-31 of each of the main reinforcement positioning mechanisms 2-3 are arranged along the length direction of the movable groove 4 directly below it;

[0095] The two horizontal support rods 2-31 in the main reinforcement positioning mechanism 2-3 constitute a steel frame width adjustment mechanism for adjusting the width B of the steel frame segment 1 to be processed, and the two limit members on each horizontal support rod 2-31 constitute a steel frame thickness adjustment unit for adjusting the thickness H of the steel frame segment 1 to be processed, and the two steel frame thickness adjustment units in the main reinforcement positioning mechanism 2-3 constitute a steel frame thickness adjustment mechanism.

[0096] For the convenience of connection, a connecting steel plate 16 is installed at both ends of the steel frame segment 1 to be processed, and the connecting steel plate 16 is welded and fixed to both ends of the steel frame segment 1 to be processed as a whole. In actual construction, two adjacent steel frame segments in the grid steel frame are connected by connecting steel plates 16. In addition, the two connecting steel plates 16 are connected by four steel frame connecting bolts, and each connecting steel plate 16 has four bolt mounting holes for installing the steel frame connecting bolts, and the four steel frame connecting bolts are respectively arranged on the four vertices of a rectangle.

[0097] In this embodiment, each of the connecting steel plates 16 is composed of two symmetrically arranged right angle steels, which are located on the same vertical plane. Each of the right angle steels is welded and fixed to an inner steel bar 1-12 and an outer steel bar 1-11.

[0098] like Fig.25 As shown, the grid steel frame also includes a tunnel bottom bracket 19 for supporting the bottom of the tunnel hole 17, and the shape of the tunnel bottom bracket 19 is the same as the cross-sectional shape of the bottom of the tunnel hole 17; the tunnel bottom bracket 19 is formed by splicing a plurality of the steel frame segments, and the plurality of the steel frame segments of the tunnel bottom bracket 19 are arranged along the bottom excavation contour line of the tunnel hole 17. Therefore, the grid steel frame is a full-section support structure for supporting the tunnel hole 17 in its entirety.

[0099] Combination Fig.11 , Fig.12 , Fig.13 and Fig.14 The grid steel frame rapid processing platform of the present invention further includes two left and right steel plate positioning seats 15, both of which are installed on the horizontal support platform 3 and position the connecting steel plate 16. The two steel plate positioning seats 15 are arranged on the left and right sides of the steel frame segment 1 to be processed;

[0100] The two connecting steel plates 16 on the steel frame segment 1 to be processed are clamped between the two steel plate positioning seats 15, each connecting steel plate 16 is supported on one steel plate positioning seat 15, and each connecting steel plate 16 is arranged in parallel with the steel plate positioning seat 15 it supports. Therefore, the steel plate positioning seat 15 has a simple structure and is easy to install and arrange, and can easily and quickly adjust the positioning position accordingly.

[0101] In this embodiment, each of the steel plate positioning seats 15 includes a horizontal base 15-1 and a vertical limit plate 15-2 fixed on the horizontal base 15-1 and supporting the connecting steel plate 16. The vertical limit plate 15-2 is a rectangular straight steel plate. Each of the vertical limit plates 15-2 is arranged parallel to the connecting steel plate 16 it supports and the two are close to each other; each of the vertical limit plates 15-2 is provided with four through holes 20 for the steel frame connecting bolts to pass through.

[0102] Furthermore, the through hole 20 is a round hole.

[0103] To ensure the positioning strength of the steel plate positioning seat 15, one side wall of the vertical limit plate 15-2 is close to the connecting steel plate 16 it supports, and a vertical stiffening rib 15-3 is provided on the other side wall of the vertical limit plate 15-2, and the vertical stiffening rib 15-3 is fixed on the horizontal base 15-1.

[0104] In this embodiment, the horizontal base 15-1 is horizontally supported on the horizontal support platform 3. In actual use, the horizontal base 15-1 ensures that the steel plate positioning seat 15 is stably supported, and the position of the steel plate positioning seat 15 can be simply and quickly moved by moving the horizontal base 15-1, ensuring the positioning requirements of steel frame segments 1 to be processed of different sizes.

[0105] In actual use, the horizontal base 15 - 1 and the horizontal support platform 3 are connected by bolts or fixedly connected by welding.

[0106] In this embodiment, one of the two steel plate positioning seats 15 is a fixed positioning seat, and the other steel plate positioning seat 15 is a movable positioning seat.

[0107] The fixed positioning seat is connected to the horizontal support platform 3 by bolts, and the movable positioning seat is freely adjusted according to the length of the steel frame segment 1 to be processed, and is directly welded to the horizontal support platform 3. After the movable positioning seat is used, the welding position of the movable positioning seat needs to be polished.

[0108] For the convenience of position adjustment, a horizontal sliding groove 21 is provided on the horizontal support platform 3 for the fixed positioning seat to move horizontally inward and outward, and the center line of the horizontal sliding groove 21 and the center lines of the plurality of movable grooves 4 intersect at the center of the arc line. In actual use, the position of the fixed positioning seat can be adjusted simply and quickly through the horizontal sliding groove 21, and after each adjustment, it can be ensured that the fixed positioning seat is arranged vertically with the end of the steel frame segment 1 to be processed, so that only the horizontal sliding groove 21 is moved horizontally inward and outward to achieve an accurate positioning position, which is simple to implement and has a good use effect.

[0109] In this embodiment, Fig.12 As shown, each of the vertical limit plates 15-2 has an outer lower through hole for one of the outer steel bars 1-11 in the steel frame segment 1 to be processed to pass through, and each of the vertical limit plates 15-2 has M outer upper through holes for another of the outer steel bars 1-11 in the steel frame segment 1 to be processed to pass through, and each of the vertical limit plates 15-2 has M inner lower through holes for one of the inner steel bars 1-12 in the steel frame segment 1 to be processed to pass through, and each of the vertical limit plates 15-2 has M inner upper through holes for another of the inner steel bars 1-12 in the steel frame segment 1 to be processed to pass through, wherein M is a positive integer and M≥3;

[0110] The outer lower through hole, the outer upper through hole, the inner lower through hole and the inner upper through hole are all through holes 20;

[0111] All the through holes 20 on each of the vertical limiting plates 15 - 2 constitute a positioning hole group for positioning the connecting steel plates 16 of the M types of steel frame segments 1 to be processed.

[0112] In this embodiment, M=3, and all the steel bar through holes 20 on each of the vertical limiting plates 15-2 constitute a positioning hole group for positioning the connecting steel plates 16 of the three different sizes of the steel frame segments 1 to be processed. All the steel bar through holes 20 on each of the vertical limiting plates 15-2 are respectively arranged on the four vertices of the three rectangles, thereby being able to meet the positioning requirements of the steel frame segments 1 to be processed of different thicknesses and widths.

[0113] In actual use, all the outer upper through holes on each of the vertical limit plates 15-2 can be connected to form a long strip hole, all the inner lower through holes on each of the vertical limit plates 15-2 can be connected to form a long strip hole, and all the inner upper through holes on each of the vertical limit plates 15-2 are connected to form a long strip hole, which makes the usage very flexible.

[0114] During actual installation, a plurality of main rib positioning molds 2 are evenly arranged along the circumferential direction.

[0115] In this embodiment, there are three main rib positioning molds 2. In actual use, the number of main rib positioning molds 2 and the layout positions of each main rib positioning mold 2 can be adjusted accordingly according to specific needs.

[0116] In this embodiment, the three main rib positioning molds 2 include a middle mold and two symmetrically arranged side molds. The middle mold is arranged along the width direction of the horizontal support platform 3.

[0117] Furthermore, the middle mold is arranged in the middle of the horizontal supporting platform 3 .

[0118] like Figure 5 As shown, the horizontal support platform 3 includes a rectangular support platform 3-1 and four support columns 3-2 supporting the rectangular support platform 3-1. The four support columns 3-2 are arranged vertically, and the rectangular support platform 3-1 is arranged horizontally; each of the support columns 3-2 is supported at the bottom of the rectangular support platform 3-1.

[0119] In this embodiment, the rectangular support platform 3-1 includes a rectangular support frame, an upper support plate 3-11 and a lower support plate 3-12 located directly below the upper support plate 3-11. The rectangular support frame is connected by four straight rods 3-13 arranged on the same horizontal plane, and the four straight rods 3-13 are all arranged horizontally; the upper support plate 3-11 and the lower support plate 3-12 are both rectangular steel plates arranged horizontally, and the upper support plate 3-11 and the lower support plate 3-12 are respectively installed on the upper and lower sides of the rectangular support frame.

[0120] During actual installation, the cavity between the upper support plate 3-11 and the lower support plate 3-12 is an installation cavity for installing the sliding seat 2-1. A plurality of horizontal slideways 5 for the sliding seat 2-1 to slide horizontally are arranged at the bottom of the upper support plate 3-11, and each of the sliding seats 2-1 is installed on one of the horizontal slideways 5;

[0121] The number of the horizontal slides 5 is the same as the number of the main rib positioning molds 2, and each of the horizontal slides 5 is located directly below a moving groove 4, and each of the horizontal slides 5 is arranged along the length direction of the moving groove 4 directly below it. Therefore, the sliding seat 2-1 can be effectively protected by the rectangular support platform 3-1, and the use process of the sliding seat 2-1 can be ensured to be stable and reliable.

[0122] In this embodiment, the sliding seat 2 - 1 includes a horizontally arranged cubic sliding block and a vertical connecting plate 10 .

[0123] The connecting seat 2-2 is arranged vertically, and the connecting seat 2-2 is connected to the sliding seat 2-1 through a vertical connecting plate 10. The vertical connecting plate 10 is a straight plate arranged vertically, and the limiting groove 2-32 is a straight groove for the vertical connecting plate 10 to move forward and backward. The actual processing is simple and the connection is reliable. In addition, each of the vertical connecting plates 10 is located directly above one of the sliding seats 2-1.

[0124] The connection seat 2-2 and the vertical connection plate 10 are fastened together by a plurality of connection bolts 11 arranged from top to bottom on the same vertical plane. The vertical connection plate 10 and the sliding seat 2-1 are welded and fixed as one or processed as one. In actual use, other connection methods can be used between the connection seat 2-2 and the vertical connection plate 10, and between the vertical connection plate 10 and the sliding seat 2-1.

[0125] For the sake of easy processing and accurate positioning, the vertical connecting plate 10 is a long strip steel plate. In this embodiment, the connecting seat 2-2 is a steel support seat, and the vertical connecting plate 10 is a steel plate.

[0126] In this embodiment, the horizontal slide 5 is a steel slide and its upper portion is welded and fixed to the bottom of the upper support plate 3 - 11 .

[0127] For ease of processing, the horizontal slide 5 consists of two symmetrically arranged slide rails, the two slide rails are arranged in parallel and both are arranged horizontally, the two slide rails are arranged on the same horizontal plane, and the sliding seat 2-1 is supported between the two slide rails; the cross-section of the slide rail is L-shaped and it is a steel slide rail.

[0128] In order to realize automatic driving, each of the main rib positioning molds 2 further includes a moving driving mechanism for driving the sliding seat 2 - 1 to move horizontally, and the moving driving mechanism is connected to the sliding seat 2 - 1 .

[0129] In this embodiment, combined with Figure 6 and Figure 7 The moving driving mechanism is a horizontally arranged cylinder 6, and the cylinder 6 is arranged in the installation cavity between the upper support plate 3-11 and the lower support plate 3-12. Each of the cylinders 6 is located directly below a horizontal slide 5, and each of the cylinders 6 is arranged parallel to the horizontal slide 5 located directly above it.

[0130] In order to ensure reliable driving and a smooth and reliable driving process, the bottom of the sliding seat 2-1 is connected to the cylinder 6 in an articulated manner.

[0131] In addition, a bottom hinged seat 7 for connecting to the piston rod of the cylinder 6 is provided at the bottom of the sliding seat 2 - 1 . The bottom hinged seat 7 and the piston rod are connected via a hinge shaft 8 . The hinge shaft 8 is arranged horizontally and vertically to the cylinder 6 .

[0132] In this embodiment, the cylinder barrel of the cylinder 6 is connected to one of the straight rods 3-13 in an articulated manner. The cylinder barrel of the cylinder 6 is connected to the straight rod 3-13 connected thereto via a side articulated seat 9.

[0133] In this embodiment, the four straight rods 3-13 are all channel steels, and the webs of the four straight rods 3-13 are arranged vertically.

[0134] Therefore, the rectangular support platform 3-1 is easy to manufacture and has a reliable and stable structure. The four support columns 3-2 are respectively supported below the four corners of the rectangular support platform 3-1.

[0135] In this embodiment, the horizontal support rod 2-31 is a steel screw, and the horizontal support rod 2-31 is connected to the limiter 2-33 installed thereon by a threaded manner. The horizontal support rod 2-31 is easily connected to the connecting seat 2-2 and is convenient for disassembly, assembly and adjustment. The steel screw is a steel threaded rod.

[0136] For easy adjustment, the lower support rod is a fixed support rod with its outer end fixed on the connecting seat 2-2, and the upper support rod is a movable support rod that can move up and down in the vertical direction. Therefore, it is only necessary to adjust the installation height of the upper support rod, which is easy to adjust, and there is no restriction above the upper support rod, which is easy to operate and the adjustment height is unlimited.

[0137] For easy connection, the horizontal support rod 2-31 is connected to the connection seat 2-2 via a detachable connection member. In this embodiment, the detachable connection member is a limit nut 12.

[0138] In this embodiment, the lower portion of the connection seat 2-2 is provided with a lower mounting hole for the lower support rod to be mounted, and the upper portion of the connection seat 2-2 is provided with a strip mounting hole 14 for the upper support rod to be mounted or a plurality of upper mounting holes 13 for the upper support rod to be mounted, the strip mounting hole 14 and the plurality of upper mounting holes 13 are arranged on the same vertical plane as the lower mounting hole, the strip mounting hole 14 is a vertical through hole for the upper support rod to move up and down, the lower mounting hole and the upper mounting hole are both round holes, and the apertures of the plurality of upper mounting holes are the same.

[0139] To facilitate the connection between the connecting seat 2-2 and the horizontal support rod 2-31 and the vertical connecting plate 10, the cross-section of the connecting seat 2-2 is L-shaped. The connecting seat 2-2 is connected by a vertical support plate and a vertical mounting plate. The vertical support plate and the vertical mounting plate are both straight steel plates and are arranged vertically.

[0140] During actual connection, the two horizontal support rods 2-31 in the main reinforcement positioning mechanism 2-3 are both installed on the vertical mounting plate, the vertical mounting plate and the horizontal support rods 2-31 are arranged vertically, and the vertical connecting plate 10 is fastened to the vertical support plate and the two are arranged in parallel.

[0141] In this embodiment, the main reinforcement connecting reinforcement is the eight-shaped reinforcement 1-3 or the butterfly reinforcement 1-4. Among them, the eight-shaped reinforcement 1-3 and the butterfly reinforcement 1-4 are both conventional longitudinal connecting reinforcements used in the grid steel frame. The eight-shaped reinforcement 1-3 is formed by connecting two symmetrically arranged X-shaped reinforcements, and the butterfly reinforcement 1-4 is formed by connecting two symmetrically arranged 8-shaped reinforcements.

[0142] From the above content, it can be seen that the structure design of the grid steel frame rapid processing platform described in the present invention is reasonable. In order to improve the processing efficiency, a plurality of concentrically arranged arcs with different radii can be drawn on the horizontal support platform 3, and the length of the arc is determined according to the length of the longest steel frame segment 1 to be processed among the steel frame segments 1 to be processed with the same curvature.

[0143] When reinforcing the steel frame segment 1 to be processed, the positions of the three main reinforcement positioning molds 2 can be adjusted accordingly simply and quickly according to the arc length and radius of the steel frame segment 1 to be processed and in combination with the multiple arcs drawn on the horizontal support platform 3. The three movable grooves 4 serve as the slide grooves of the main reinforcement positioning mold 2, and the three movable grooves 4 are distributed in a scattered manner. In addition, each of the main reinforcement positioning molds 2 is driven to move by a moving drive mechanism, and the three main reinforcement positioning molds 2 can move synchronously or individually, and are flexible to use, and have the functions of rapid movement and position fine-tuning.

[0144] During actual processing, the cross section of the upper limit groove 2-32 of the limit member is semicircular, and the inner diameter of the limit groove 2-32 is slightly larger than the main reinforcement diameter of the steel frame segment 1 to be processed.

[0145] In actual use, the horizontal support rod 2-31 can also be a smooth rod. The limit member is provided with a round hole for installing the horizontal support rod 2-31. The diameter of the round hole is larger than the diameter of the horizontal support rod 2-31. After the limit member is moved into place, it is locked by a nut.

[0146] like Fig.17 A grid steel frame processing method shown, using a grid steel frame rapid processing platform to process multiple steel frame segments of the processed grid steel frame respectively, and the processing methods of the multiple steel frame segments are the same;

[0147] When processing any of the steel frame segments, the following steps are included:

[0148] Step 1: Adjust the main reinforcement positioning mechanism: According to the width B and thickness H of the processed grid steel frame, adjust the plurality of main reinforcement positioning mechanisms 2-3 respectively, and the adjustment methods of the plurality of main reinforcement positioning mechanisms 2-3 are the same; the processed steel frame segment is the steel frame segment 1 to be processed;

[0149] When adjusting any of the main reinforcement positioning mechanisms 2-3, the spacing between the two horizontal support rods 2-31 in the adjusted main reinforcement positioning mechanism 2-3 is adjusted according to the width B of the processed grid steel frame, so that the spacing between the two horizontal support rods 2-31 is adjusted to B; at the same time, according to the thickness H of the processed grid steel frame, the spacing between the two limiting members on each horizontal support rod 2-31 in the adjusted main reinforcement positioning mechanism 2-3 is adjusted, so that the spacing between the two limiting members on each horizontal support rod 2-31 is adjusted to H, and a lower limiting member is evenly arranged directly below each upper limiting member;

[0150] Step 2: Adjust the position of the main reinforcement positioning mold: according to the radius of the processed steel frame segment, the plurality of main reinforcement positioning molds 2 are horizontally moved inward and outward respectively, and the plurality of main reinforcement positioning molds 2 are located on the same arc line;

[0151] Step 3, main reinforcement installation: the four main reinforcements of the processed steel frame segment are installed on the plurality of main reinforcement positioning molds 2 in step 2, so that each outer layer reinforcement 1-11 of the processed steel frame segment is supported on the plurality of outer limit members located on the same horizontal plane, and each inner layer reinforcement 1-12 of the processed steel frame segment is supported on the plurality of inner limit members located on the same horizontal plane;

[0152] Step 4: Fixing the main reinforcement connecting ribs: After the four main reinforcements of the processed steel frame segment are installed, the multiple main reinforcement connecting ribs on the processed steel frame segment are respectively welded and fixed;

[0153] Step 5: Fixing the rectangular stirrups: fix the plurality of rectangular stirrups 1-2 on the processed steel frame segment respectively.

[0154] Before adjusting the position of the main reinforcement positioning mold in step 2, for ease of adjustment, draw an arc on the horizontal support platform 3 according to the radius of the processed steel frame segment; when adjusting the position of the main reinforcement positioning mold in step 2, adjust the positions of the three main reinforcement positioning molds 2 respectively according to the arc drawn on the horizontal support platform 3. Among them, the radius of the processed steel frame segment refers to the radius of the outer steel bars 1-11 or the radius of the inner steel bars 1-12 in the processed steel frame segment, and the arc length of the processed steel frame segment refers to the arc length of the outer steel bars 1-11 or the arc length of the inner steel bars 1-12 in the processed steel frame segment. The actual operation is very flexible and simple.

[0155] When installing the main reinforcement in step three, first install the two main reinforcements located at the bottom and supported on the lower support rod, and then install the two main reinforcements located at the top and supported on the upper support rod.

[0156] When fixing the main reinforcement connecting reinforcement in step 4, since the four main reinforcements in step 3 have been installed and the four main reinforcements are stably and firmly limited by the three main reinforcement positioning molds 2, it is sufficient to reinforce the main reinforcement connecting reinforcements by spot welding. The actual welding is very simple and can ensure the processing quality of the processed steel frame segment.

[0157] When the rectangular stirrups are fixed in step five, since the four main bars in step three have been installed and the four main bars are steadily and firmly limited by the three main bar positioning molds 2, it is only necessary to spot weld each rectangular stirrup 1-2, and the actual welding is very simple and can ensure the processing quality of the processed steel frame segment.

[0158] In this embodiment, before installing the main reinforcement in step 3, the layout positions of the two steel plate positioning seats 15 need to be adjusted respectively according to the arc length of the processed steel frame segment;

[0159] When the main reinforcement is processed in step 3, both ends of each main reinforcement in the processed steel frame segment are installed on one of the steel plate positioning seats 15.

[0160] When the rectangular stirrups are fixed in step 5, the fixing methods of the plurality of rectangular stirrups 1-2 are the same;

[0161] In order to improve the fixing efficiency of the rectangular stirrups 1-2, when fixing any of the rectangular stirrups 1-2 on the processed steel frame segment, a steel bar bending tool 22 is used to bend a straight steel bar 23 around the four main bars in step three to form a rectangular stirrup 1-2; the steel bar bending tool 22 is a bending tool that bends a straight steel bar 23 three times to form a rectangular stirrup 1-2;

[0162] like Fig.15 , Fig.16 As shown, the steel bar bending tool 22 includes a straight handle 22-1 and a V-shaped bending piece arranged at the front end of the straight handle 22-1, and the V-shaped bending piece is located directly in front of the straight handle 22-1; the V-shaped bending piece includes two symmetrically arranged clamping pieces 22-2, and the cavity between the rear parts of the two clamping pieces 22-2 is a clamping hole 22-3 for clamping the bent straight steel bar 23, and the two clamping pieces 22-2 are both hooks that can be hooked on the main reinforcement in the steel frame segment 1 to be processed.

[0163] like Fig.18 As shown, before the first bending using the steel bar bending tool 22, one end of the bent straight steel bar 23 is bent into a curve and hooked on the main bar located at the bottom of the processed steel frame segment.

[0164] Combination Fig.18 , Fig.19 and Fig. 20 When the steel bar bending tool 22 is used for the first bending, the steel bar bending tool 22 is supported from bottom to top in the clamping holes 22-3 of the two clamping members 22-2, and the two clamping members 22-2 are hooked on one of the main bars at the bending position, and the straight handle 22-1 is arranged vertically at this time; then, the straight handle 22-1 is pulled from bottom to top and rotated 90° counterclockwise on the vertical plane to complete the first bending process, and the straight handle 22-1 is arranged horizontally at this time;

[0165] Combination Fig.21 and Fig. 22 When the steel bar bending tool 22 is used for the second bending, the steel bar bending tool 22 is supported from top to bottom in the clamping holes 22-3 of the two clamping members 22-2, and the two clamping members 22-2 are hooked on one of the main bars at the bending position, and the straight handle 22-1 is arranged horizontally at this time; then, the straight handle 22-1 is pulled from bottom to top and the straight handle 22-1 is rotated 90° counterclockwise on the vertical plane to complete the second bending process, and the straight handle 22-1 is arranged vertically at this time;

[0166] Combination Fig.23 and Fig.24 When the steel bar bending tool 22 is used for the third bending, the steel bar bending tool 22 is supported from top to bottom in the clamping holes 22-3 of the two clamping members 22-2, and the two clamping members 22-2 are hooked on one of the main bars at the bending position. At this time, the straight handle 22-1 is arranged vertically; then, the straight handle 22-1 is pulled from bottom to top and rotated 90° counterclockwise on the vertical plane to complete the second bending process. At this time, the straight handle 22-1 is arranged vertically.

[0167] After the steel frame segment is processed, the three main reinforcement positioning molds 2 are loosened, the processed steel frame segment is taken out, and subsequent welding is performed on the welding pedestal. After the welding meets the requirements, it is moved to the finished product storage area, so the actual processing is very simple. In actual use, when the main reinforcement positioning mold 2 is loosened, it is only necessary to remove the upper support rod in the main reinforcement positioning mold 2 or move the upper support rod downward, and the actual operation is very simple.

[0168] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A grid steel frame rapid processing platform, characterized by: It comprises a horizontal support platform (3) and a plurality of main reinforcement positioning molds (2) for synchronously positioning a steel frame segment (1) to be processed, wherein the plurality of main reinforcement positioning molds (2) are arranged along a circumferential direction and are all mounted on the horizontal support platform (3), the plurality of main reinforcement positioning molds (2) have the same structure and size, and the steel frame segment (1) to be processed is arranged horizontally and is located above the horizontal support platform (3); The steel frame segment to be processed (1) is a steel frame segment in a grid steel frame for initially supporting a tunnel hole (17), the grid steel frame comprising an arch wall bracket (18) for supporting an arch wall of the tunnel hole (17), the shape of the arch wall bracket (18) being the same as the cross-sectional shape of the arch wall of the tunnel hole (17); the arch wall bracket (18) is formed by splicing a plurality of the steel frame segments, the plurality of the steel frame segments are arranged along the arch wall excavation contour line of the tunnel hole (17), and each of the steel frame segments is arc-shaped; Each of the steel frame segments comprises four main bars, a plurality of main bar connecting bars and a plurality of rectangular stirrups (1-2), the four main bars are arranged in parallel and have the same diameter, each of the main bars is an arc-shaped steel bar and has the same shape as the steel frame segment in which it is located; the plurality of main bar connecting bars and the plurality of rectangular stirrups (1-2) are arranged from front to back along the length direction of the steel frame segment in which they are located, each of the rectangular stirrups (1-2) is hooped on the outside of the four main bars, and the four main bars are arranged at the four top corners of a rectangular stirrup (1-2); each of the main bar connecting bars is welded and fixed to the four main bars as a whole; the four main bars comprise two outer steel bars (1-11) and two inner steel bars (1-12), the two outer steel bars (1-11) have the same structure and size and are arranged in parallel. The two inner steel bars (1-12) are arranged on the same arc surface, the structures and dimensions of the two inner steel bars (1-12) are the same and the two are arranged on the same arc surface, an inner steel bar (1-12) is arranged on the inner side of each outer steel bar (1-11), each outer steel bar (1-11) and the inner steel bar (1-12) arranged on the inner side thereof are arranged on the same tunnel cross section of the tunnel hole (17), the spacing between each outer steel bar (1-11) and the inner steel bar (1-12) arranged on the inner side thereof is H, wherein H is the thickness of the grid steel frame, and the value range of H is 15 cm to 25 cm; the spacing between the two outer steel bars (1-11) and between the two inner steel bars (1-12) is B, wherein B is the width of the grid steel frame, and the value range of B is 15 cm to 25 cm; A plurality of main reinforcement positioning molds (2) form a main reinforcement positioning device for positioning four main reinforcements in a steel frame segment (1) to be processed. The structures of the plurality of main reinforcement positioning molds (2) are the same and they are arranged on the same horizontal plane. The horizontal support platform (3) is provided with a plurality of movable grooves (4) for the main reinforcement positioning molds (2) to move horizontally inward and outward, and the movable grooves (4) are straight grooves. Each main reinforcement positioning mold (2) is installed on one movable groove (4), and each main reinforcement positioning mold (2) is arranged along the center line of the movable groove (4) on which it is installed. The plurality of main reinforcement positioning molds (2) are arranged on the same arc line, and the plurality of main reinforcement positioning molds (2) are arranged from left to right along the arc line. The center lines of the plurality of movable grooves (4) intersect at the center of the arc line, and the center of the arc line is located on the inner side of the horizontal support platform (3). The number of movable grooves (4) is the same as the number of main reinforcement positioning molds (2). Each of the main reinforcement positioning molds (2) comprises a sliding seat (2-1) that moves horizontally along a moving groove (4), a connecting seat (2-2) that is mounted on the sliding seat (2-1) and can move horizontally synchronously with the sliding seat (2-1), and a main reinforcement positioning mechanism (2-3) that respectively positions four main reinforcements in the steel frame segment (1) to be processed, wherein the main reinforcement positioning mechanism (2-3) is mounted on the connecting seat (2-2); each of the sliding seats (2-1) is mounted in one of the moving grooves (4), the sliding seat (2-1) is located below the steel frame segment (1) to be processed, and the connecting seat (2-2) is located outside the steel frame segment (1) to be processed; each of the connecting seats (2-2) is located outside one of the moving grooves (4); The main reinforcement positioning mechanism (2-3) comprises two upper and lower limit rods both arranged horizontally, the two limit rods have the same structure and size, and the two limit rods are arranged on the same vertical plane; each limit rod comprises a horizontal support rod (2-31), each horizontal support rod (2-31) is coaxially sleeved with two inner and outer limit members (2-33) capable of horizontally moving on the horizontal support rod (2-31), and the two limit members (2-33) have the same structure and size; the two horizontal support rods (2-31) in the main reinforcement positioning mechanism (2-3) are arranged on the same vertical plane, and the outer ends of the two horizontal support rods (2-31) are mounted on the connecting seat (2-2); the two horizontal support rods (2-31) in the main reinforcement positioning mechanism (2-3) are respectively a lower support rod and a lower support rod located above the lower support rod. The upper support rod is an upper support rod, the limiting member installed on the upper support rod is an upper limiting member, the limiting member installed on the lower support rod is a lower limiting member, and a lower limiting member is arranged directly below each upper limiting member. The two limiting members on each horizontal support rod (2-31) are respectively an outer limiting member and an inner limiting member located inside the outer limiting member; each limiting member (2-33) is provided with a limiting groove (2-32) for limiting the main reinforcement of the steel frame segment (1) to be processed, and the limiting groove (2-32) is annular and has an arc-shaped cross section; the four limiting members (2-33) of the main reinforcement positioning mechanism (2-3) are respectively arranged on the four vertices of a rectangle, and each main reinforcement of the steel frame segment (1) to be processed is clamped in the limiting groove (2-32) of a limiting member (2-33); Each of the main reinforcement positioning mechanisms (2-3) is located directly above a movable groove (4), the two horizontal support rods (2-31) of each of the main reinforcement positioning mechanisms (2-3) are arranged on the same vertical plane as a movable groove (4) located directly below it, and the two horizontal support rods (2-31) of each of the main reinforcement positioning mechanisms (2-3) are arranged along the length direction of the movable groove (4) located directly below it; The two horizontal support rods (2-31) in the main reinforcement positioning mechanism (2-3) form a steel frame width adjustment mechanism for adjusting the width B of the steel frame segment (1) to be processed, the two limit members on each horizontal support rod (2-31) form a steel frame thickness adjustment unit for adjusting the thickness H of the steel frame segment (1) to be processed, and the two steel frame thickness adjustment units in the main reinforcement positioning mechanism (2-3) form a steel frame thickness adjustment mechanism; The number of the main reinforcement positioning molds (2) is three; The three main rib positioning molds (2) include a middle mold and two symmetrically arranged side molds on the left and right; A connecting steel plate (16) is installed at both ends of the steel frame segment (1) to be processed, and two adjacent steel frame segments in the grid steel frame are connected via the connecting steel plate (16); It also includes two left and right steel plate positioning seats (15) both mounted on the horizontal support platform (3) and used to position the connecting steel plate (16), the two steel plate positioning seats (15) being arranged on the left and right sides of the steel frame segment (1) to be processed; The two connecting steel plates (16) on the steel frame segment (1) to be processed are clamped between the two steel plate positioning seats (15), each connecting steel plate (16) is supported on one steel plate positioning seat (15), and each connecting steel plate (16) is arranged in parallel with the steel plate positioning seat (15) it supports; One of the two steel plate positioning seats (15) is a fixed positioning seat, and the other steel plate positioning seat (15) is a movable positioning seat.

2. A grid steel frame rapid processing platform according to claim 1, characterized in that: The grid steel frame further comprises a tunnel bottom bracket (19) for supporting the bottom of the tunnel hole (17); the shape of the tunnel bottom bracket (19) is the same as the cross-sectional shape of the bottom of the tunnel hole (17); the tunnel bottom bracket (19) is formed by splicing a plurality of the steel frame segments; the plurality of the steel frame segments of the tunnel bottom bracket (19) are arranged along the bottom excavation contour line of the tunnel hole (17).

3. A grid steel frame rapid processing platform according to claim 1, characterized in that: The horizontal support platform (3) comprises a rectangular support platform (3-1) and four support columns (3-2) supporting the rectangular support platform (3-1); the four support columns (3-2) are arranged vertically, and the rectangular support platform (3-1) is arranged horizontally; each of the support columns (3-2) is supported on the bottom of the rectangular support platform (3-1).

4. A grid steel frame rapid processing platform according to claim 1, characterized in that: Each main rib positioning mold (2) further comprises a moving drive mechanism for driving the sliding seat (2-1) to move horizontally, and the moving drive mechanism is connected to the sliding seat (2-1).

5. A grid steel frame rapid processing platform according to claim 1, characterized in that: The horizontal support rod (2-31) is a steel screw, and the horizontal support rod (2-31) and the limiting member (2-33) mounted thereon are connected in a threaded manner.

6. A grid steel frame rapid processing platform according to claim 1, characterized in that: The lower support rod is a fixed support rod whose outer end is fixed on the connecting seat (2-2), and the upper support rod is a movable support rod that can move up and down in the vertical direction.

7. A method for processing a grid steel frame using the processing platform as claimed in claim 1, characterized in that: A grid steel frame rapid processing platform is used to process the plurality of steel frame segments of the processed grid steel frame respectively, and the processing methods of the plurality of steel frame segments are the same; When processing any of the steel frame segments, the following steps are included: Step 1, adjusting the main reinforcement positioning mechanism: according to the width B and thickness H of the processed grid steel frame, the plurality of main reinforcement positioning mechanisms (2-3) are adjusted respectively, and the adjustment methods of the plurality of main reinforcement positioning mechanisms (2-3) are the same; the processed steel frame segment is the steel frame segment to be processed (1); When adjusting any of the main reinforcement positioning mechanisms (2-3), the spacing between the two horizontal support rods (2-31) in the adjusted main reinforcement positioning mechanism (2-3) is adjusted according to the width B of the processed grid steel frame, so that the spacing between the two horizontal support rods (2-31) is adjusted to B; at the same time, according to the thickness H of the processed grid steel frame, the spacing between the two limiting members on each horizontal support rod (2-31) in the adjusted main reinforcement positioning mechanism (2-3) is adjusted, so that the spacing between the two limiting members on each horizontal support rod (2-31) is adjusted to H, and a lower limiting member is evenly arranged directly below each upper limiting member; Step 2: adjusting the position of the main reinforcement positioning mold: according to the radius of the processed steel frame segment, the plurality of main reinforcement positioning molds (2) are horizontally moved inward and outward respectively, and the plurality of main reinforcement positioning molds (2) are located on the same arc line; Step 3, main reinforcement installation: the four main reinforcements of the processed steel frame segment are installed on the plurality of main reinforcement positioning molds (2) in step 2, so that each outer layer reinforcement (1-11) of the processed steel frame segment is supported on the plurality of outer limiting members located on the same horizontal plane, and each inner layer reinforcement (1-12) of the processed steel frame segment is supported on the plurality of inner limiting members located on the same horizontal plane; Step 4: Fixing the main reinforcement connecting ribs: After the four main reinforcements of the processed steel frame segment are installed, the multiple main reinforcement connecting ribs on the processed steel frame segment are respectively welded and fixed; Step 5: Fixing the rectangular stirrups: fix the plurality of rectangular stirrups (1-2) on the processed steel frame segment respectively.

8. The method according to claim 7, characterized in that: A connecting steel plate (16) is installed at both ends of the steel frame segment (1) to be processed, and two adjacent steel frame segments in the grid steel frame are connected via the connecting steel plate (16); The grid steel frame rapid processing platform further comprises two left and right steel plate positioning seats (15) both mounted on the horizontal support platform (3) and used to position the connecting steel plate (16); the two steel plate positioning seats (15) are arranged on the left and right sides of the steel frame segment (1) to be processed; The two connecting steel plates (16) on the steel frame segment (1) to be processed are clamped between the two steel plate positioning seats (15), each connecting steel plate (16) is supported on one steel plate positioning seat (15), and each connecting steel plate (16) is arranged in parallel with the steel plate positioning seat (15) it supports; One of the two steel plate positioning seats (15) is a fixed positioning seat, and the other steel plate positioning seat (15) is a movable positioning seat; Before installing the main reinforcement in step 3, the layout positions of the two steel plate positioning seats (15) need to be adjusted according to the arc length of the processed steel frame segment; When the main reinforcement is processed in step 3, both ends of each main reinforcement in the processed steel frame segment are installed on a steel plate positioning seat (15); When the rectangular stirrups are fixed in step 5, the fixing method of the plurality of rectangular stirrups (1-2) is the same; When fixing any of the rectangular stirrups (1-2) on the processed steel frame segment, a steel bar bending tool (22) is used to bend a straight steel bar (23) around the four main bars in step three to form a rectangular stirrup (1-2); The steel bar bending tool (22) comprises a straight handle (22-1) and a V-shaped bending piece arranged at the front end of the straight handle (22-1), wherein the V-shaped bending piece is located directly in front of the straight handle (22-1); the V-shaped bending piece comprises two symmetrically arranged clamping pieces (22-2), wherein the cavity between the rear parts of the two clamping pieces (22-2) is a clamping hole (22-3) for clamping the bent straight steel bar (23), and the two clamping pieces (22-2) are hooking pieces capable of being hooked onto a main bar in a steel frame segment (1) to be processed.

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