A prefabricated box girder assembly type steel bar binding fixture and construction method
By designing detachable and assembled prefabricated box beam assembly steel bar binding tire clamps, the combination of hydraulic inner mold support frame and channel steel slides is used to solve the problem that traditional tire clamps cannot achieve the sharing of multiple non-standard beam types, and the sharing and efficient binding of multiple beam types is achieved, which improves work efficiency and control accuracy.
Patent Information
- Application Number
- CN202510083464.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-04-01
AI Technical Summary
Traditional integrated tied tire clamps cannot share multiple non-standard beam types, and the tire clamps are frequently rotated, requiring a lot of manual disassembly and assembly, which is inefficient.
A prefabricated box beam assembly type steel bar tie-tire clamping tool is designed, using a detachable and assembled outer frame and inner support. Through the cooperation of the hydraulic inner mold support frame and the channel steel slide, rapid conversion and sharing of multiple beam types are achieved.
It realizes the sharing of multiple beam types in different sizes, reduces the number of manual disassembly and assembly times, improves work efficiency and control accuracy, and reduces the cost of equipment usage.
Smart Images
Figure CN119734350A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of railway construction, in particular to a prefabricated box girder assembled steel bar binding fixture and a construction method. Background Art
[0002] High-speed railway prefabricated box girders usually use integral tying fixtures to tie the steel cage. Traditional tying fixtures are mainly composed of a fixed external frame and an internal support frame manually assembled on site. The various components of the external frame are fixed by welding to each other, and it is a structure in which the components cannot be flexibly adjusted. However, prefabricated box girder yards can generally produce a variety of non-standard beam types, such as 30.6m, 29.6m, 26.6m, etc. This results in the inability of traditional external frames to share a variety of beam types, and the turnover of the fixtures is generally fast, requiring a large number of manual labor for disassembly and assembly. Summary of the invention
[0003] In view of the deficiencies in the prior art, the technical solution adopted by the present invention to solve the technical problems is: a prefabricated box girder assembled steel bar binding fixture, including an external frame and an internal support, the external frame includes a plurality of bottom web support frames, longitudinal ruler rods of the bottom plate of the beam, transverse ruler rods of the bottom plate of the beam, longitudinal ruler rods of the web of the beam, longitudinal ruler rods of the flange plate of the beam and transverse ruler rods of the flange plate of the beam, the internal support includes transverse ruler rods of the middle section of the top plate beam, transverse ruler rods of the end of the top plate beam and a hydraulic inner mold support frame, the transverse ruler rods of the middle section of the top plate beam and the transverse ruler rods of the end of the top plate beam constitute the inner support top plate of the steel bar binding fixture, and the hydraulic inner mold support frame is arranged below the inner support top plate.
[0004] Preferably, the longitudinal ruler rods of the beam bottom plate and the transverse ruler rods of the beam bottom plate constitute the bottom plate of the steel bar binding fixture, and the longitudinal ruler rods of the beam flange plate and the transverse ruler rods of the beam flange plate constitute the wing plates of the steel bar binding fixture.
[0005] Preferably, a sloped chamfered transition structure is provided in the middle of the longitudinal scale rod of the beam web, and a vertical support rod and an oblique support rod are provided between the inner side of the longitudinal scale rod of the beam web and the bottom plate, and one end of the oblique support rod away from the bottom plate extends to the sloped chamfered transition structure.
[0006] Preferably, a supporting leg is provided below the hydraulic inner mold support frame, a channel steel slide is provided at the top of the supporting leg, and the bottom end of the hydraulic inner mold support frame is slidably arranged in the channel steel slide.
[0007] Preferably, a plurality of the bottom web support frames are connected by angle irons, the steel bars are arranged along the height direction of the bottom web support frames, and steel bar grooves are provided on the angle irons along the length direction.
[0008] Preferably, a working platform is provided at the top of the bottom web support frame, and the bottom end of the working platform is connected to the bottom web support frame on the corresponding side through a corbel.
[0009] Preferably, a ladder is provided between one end of the working platform and the ground, and a handrail is connected to the side of the working platform away from the bottom web support frame.
[0010] The invention also discloses a construction method of a prefabricated box girder assembled steel bar binding fixture, comprising the following steps:
[0011] S1. Make steel bar skeleton binding fixtures according to the structural dimensions of the prefabricated box girder;
[0012] S2. The external frame is fixed to the hardened ground with embedded parts. Angle iron is used to fix the bottom width of the beam according to the size of the bottom steel bars of the beam. The points are marked on the angle iron according to the spacing of the steel bars. The main part of the steel bar skeleton is tied at the fixed spacing of the points.
[0013] S3. Place the inner support into the cavity of the main body of the steel frame, adjust the hydraulic inner mold support frame to an appropriate height, and then tie the top plate of the steel frame and the entire structure together.
[0014] Preferably, the plurality of bottom web support frames in the outer frame in step S2 are bolted together by corresponding structures and arranged according to multiples of the length and width of the beam.
[0015] Preferably, the supporting legs in the inner support in step S3 are arranged according to the bottom plate drainage position.
[0016] The beneficial effects of the present invention are as follows:
[0017] 1. The detachable and assembled external frame is used, which can be flexibly adjusted. By changing the horizontal or vertical connection position, multiple beam types of different sizes can be shared. For example, the horizontal fixed slots of the bottom web support frame are made according to 5-6m sections, and the vertical fixed slots are made according to 6m and 1.3m, that is, 5*6m+2*1.3m, which is the division of 32.6m beams. Single and double lines are converted horizontally, and other beam types are adjusted as needed.
[0018] 2. The internal support of the overall structure is set up through the coordination between the hydraulic inner mold support frame and the channel steel slideway, which can achieve rapid conversion without repeated disassembly and assembly, and the hydraulic inner mold support frame is adjusted to the appropriate height by hydraulic automatic control, which effectively improves work efficiency and control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a plan view of the steel bar binding fixture of the present invention;
[0020] Figure 2It is a cross-sectional view of the steel bar binding fixture of the present invention;
[0021] Figure 3 It is a partial schematic diagram of the hydraulic inner mold support frame in the present invention.
[0022] In the figure: 1. bottom web support frame; 2. longitudinal scale rod of beam bottom plate; 21. transverse scale rod of beam bottom plate; 3. longitudinal scale rod of beam web plate; 31. vertical support rod; 32. oblique support rod; 4. longitudinal scale rod of beam flange plate; 41. transverse scale rod of beam flange plate; 5. transverse scale rod of middle section of top plate beam; 51. transverse scale rod of top plate beam end; 6. hydraulic inner mold support frame. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:
[0024] like Figure 1-2 As shown, a prefabricated box girder assembled steel bar binding fixture is mainly composed of an outer frame and an inner support; the outer frame includes a plurality of bottom web support frames 1, longitudinal ruler rods 2 of the bottom plate of the beam, transverse ruler rods 21 of the bottom plate of the beam, longitudinal ruler rods 3 of the web plate of the beam, longitudinal ruler rods 4 of the flange plate of the beam and transverse ruler rods 41 of the flange plate of the beam, the longitudinal ruler rods 2 of the bottom plate of the beam and the transverse ruler rods 21 of the bottom plate of the beam constitute the bottom plate of the steel bar binding fixture, the longitudinal ruler rods 4 of the flange plate of the beam and the transverse ruler rods 41 of the flange plate of the beam The transverse scale rod 41 of the plate forms the wing plate of the steel bar binding fixture; a slope chamfer transition structure is provided in the middle position of the longitudinal scale rod 3 of the beam web, and the radius of the slope chamfer is 1800mm, and a vertical support rod 31 and an oblique support rod 32 are provided between the inner side of the longitudinal scale rod 3 of the beam web and the bottom plate, and the end of the oblique support rod 32 away from the bottom plate extends to the slope chamfer transition structure; a plurality of bottom web support frames 1 are bolted together by corresponding structures, according to the beam The bottom web support frame 1 is arranged in multiples of length and width, and several bottom web support frames 1 are connected by angle irons, and steel bars are arranged along the height direction of the bottom web support frame 1. A steel bar groove is opened on the angle iron along the length direction, and a working platform 11 is provided at the top of the bottom web support frame 1, and the bottom end of the working platform 11 is connected to the bottom web support frame 1 on the corresponding side through a corbel 12. A ladder 13 is set between one end of the working platform 11 and the ground, and a railing 14 is connected to the side of the working platform 11 away from the bottom web support frame 1; the inner support includes a transverse scale rod 5 in the middle section of the top plate beam, a transverse scale rod 51 at the end of the top plate beam, a hydraulic inner mold support frame 6 and a supporting leg, wherein the transverse scale rod 5 in the middle section of the top plate beam and the transverse scale rod 51 at the end of the top plate beam constitute the inner support top plate of the steel bar binding tire clamp, the supporting legs are arranged according to the bottom plate drainage position, and a channel steel slide is provided at the top of the supporting leg, and the bottom end of the hydraulic inner mold support frame 6 is slidably set in the channel steel slide.
[0025] Taking a 32.6m beam as an example, several bottom web support frames 1 can be arranged at a spacing of 2.0375m, and the working platform 11 and the handrail 14 can be made in sections of 8.15m and bolted to the bottom web support frame 1; the longitudinal ruler rod 2 of the bottom plate of the beam, the transverse ruler rod 21 of the bottom plate of the beam, the longitudinal ruler rod 3 of the web of the beam, the longitudinal ruler rod 4 of the flange plate of the beam and the transverse ruler rod 41 of the flange plate of the beam are all made of 75×75×8mm angle steel, in which grooves are cut on the vertical limbs of the bottom plate angle steel, the groove diameter of the longitudinal ruler rod 2 of the bottom plate of the beam is 22mm or 18mm, the groove diameter of the longitudinal ruler rod 3 of the web of the beam is 22mm, 20mm or 18mm, and the groove diameter of the longitudinal ruler rod 4 of the flange plate of the beam is 18m m, the slot spacing on the longitudinal scale rod 2 of the beam bottom plate, the longitudinal scale rod 3 of the beam web, and the longitudinal scale rod 4 of the beam flange plate is 125mm, the slot spacing on the transverse scale rod 21 of the beam bottom plate is 100mm, the slot spacing on the transverse scale rod 41 of the beam flange plate is 150mm, the slot diameters on the transverse scale rod 21 of the beam bottom plate and the transverse scale rod 41 of the beam flange plate are both 14mm, the slot spacing on the transverse scale rod 5 of the middle section of the top plate beam is 200mm, the slot spacing on the transverse scale rod 51 at the end of the top plate beam is 100mm, the slot diameters on the transverse scale rod 51 at the middle section of the top plate beam and the transverse scale rod 51 at the end of the top plate beam are both 14mm, the steel bars are just stuck in the slot to ensure the binding quality of the steel bars.
[0026] A construction method of a prefabricated box girder assembled steel bar binding fixture comprises the following steps:
[0027] S1. Make steel bar skeleton binding fixtures according to the structural dimensions of the prefabricated box girder;
[0028] S2. To facilitate the binding of the steel skeleton, the steel skeleton binding fixture is about 10 cm above the ground. The external frame and the hardened ground are fixed with embedded parts. The operation is directly carried out on the ground. Angle iron is used to fix the bottom width of the beam according to the size of the steel bars at the bottom of the beam. Points are marked on the angle iron according to the spacing of the steel bars. The main part of the steel skeleton is bound according to the fixed spacing of the points.
[0029] S3, placing the inner support into the cavity of the main body of the steel frame, and then adjusting the hydraulic inner mold support frame 6 to an appropriate height before binding the top plate and the entire steel frame.
[0030] Before the hydraulic inner mold support frame 6 moves to the channel steel slideway at the top of the supporting leg, it is placed on an A-shaped storage rack. A slide rail is provided at the top of the A-shaped storage rack along the length direction, and the height of the slide rail is consistent with the height of the channel steel slideway, so as to facilitate the docking of the hydraulic inner mold support frame 6 with the supporting leg; when docking, first place the end of the hydraulic inner mold support frame 6 close to the supporting leg on a walking traction platform, on which a motor is installed, and a gear is connected to the output shaft of the motor. A rack matching the gear is provided on the bottom surface of one end of the hydraulic inner mold support frame 6. Starting the motor drives the gear to rotate, and the rack and the gear mesh for transmission, thereby driving the hydraulic inner mold support frame 6 to move toward the supporting leg and slide into the channel steel slideway; the removal work of the hydraulic inner mold support frame 6 is similar. After the binding work is completed, starting the motor drives the gear to rotate, thereby driving the hydraulic inner mold support frame 6 to move back to the A-shaped storage rack.
[0031] In order to ensure the correct position of the longitudinal and transverse steel bars and the protective layer thickness of the web steel bars on both sides meets the prescribed allowable error, a 75×75×8mm angle steel is welded on the two outer bottom edges of the steel bar binding fixture, and its vertical limbs are used as supports. When binding, the hooks of the transverse steel bars and the web are pressed against the back of this limb to ensure the correct position of the steel bars and the neatness of the outer steel bars; in order to ensure the inclination of the web and the verticality of the crossbeam, 3 angle steels are welded longitudinally on both sides of the web, and the topmost angle steel has grooves corresponding to the angle steels at the bottom plate. When binding, the inclination of the large U-shaped steel bars on the web can be ensured by the grooves at the bottom plate and the corresponding grooves on the top layer, and its verticality can be limited to the required vertical position by the position of the positioning angle steel.
[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. A prefabricated box girder assembly type steel bar binding fixture, comprising an outer frame and an inner support, characterized in that: The outer frame comprises a plurality of bottom web support frames (1), longitudinal scale rods (2) of the bottom beam plate, transverse scale rods (21) of the bottom beam plate, longitudinal scale rods (3) of the web plate, longitudinal scale rods (4) of the flange plate, and transverse scale rods (41) of the flange plate; the inner support comprises transverse scale rods (5) of the middle section of the top plate beam, transverse scale rods (51) of the end of the top plate beam, and a hydraulic inner mold support frame (6); the transverse scale rods (5) of the middle section of the top plate beam and the transverse scale rods (51) of the end of the top plate beam constitute the inner support top plate of the steel bar binding fixture; and the hydraulic inner mold support frame (6) is arranged below the inner support top plate.
2. The prefabricated box girder assembly type steel bar binding fixture according to claim 1, characterized in that: The beam bottom plate longitudinal ruler rod (2) and the beam bottom plate transverse ruler rod (21) form the bottom plate of the steel bar binding fixture, and the beam flange plate longitudinal ruler rod (4) and the beam flange plate transverse ruler rod (41) form the wing plate of the steel bar binding fixture.
3. The prefabricated box girder assembly type steel bar binding fixture according to claim 2 is characterized by: A sloped chamfered transition structure is provided in the middle of the longitudinal scale rod (3) of the web of the beam, and a vertical support rod (31) and an oblique support rod (32) are provided between the inner side of the longitudinal scale rod (3) of the web of the beam and the bottom plate, wherein one end of the oblique support rod (32) away from the bottom plate extends to the sloped chamfered transition structure.
4. The prefabricated box girder assembly type steel bar binding fixture according to claim 1, characterized in that: A supporting leg is provided below the hydraulic inner mold support frame (6), a channel steel slideway is provided at the top of the supporting leg, and the bottom end of the hydraulic inner mold support frame (6) is slidably arranged in the channel steel slideway.
5. The prefabricated box girder assembly type steel bar binding fixture according to claim 1, characterized in that: A plurality of the bottom web support frames (1) are connected by angle irons, the steel bars are arranged along the height direction of the bottom web support frames (1), and steel bar clamping grooves are provided on the angle irons along the length direction.
6. The prefabricated box girder assembly type steel bar binding fixture according to claim 1, characterized in that: A working platform (11) is provided at the top of the bottom web support frame (1), and the bottom end of the working platform (11) is connected to the bottom web support frame (1) on the corresponding side via a corbel (12).
7. The prefabricated box girder assembly type steel bar binding fixture according to claim 1, characterized in that: A ladder (13) is arranged between one end of the working platform (11) and the ground, and a handrail (14) is connected to the side of the working platform (11) away from the bottom web support frame (1).
8. A construction method of the prefabricated box girder assembly type steel bar binding fixture according to claim 1, characterized in that: The following steps are involved: S1. Make steel bar skeleton binding fixtures according to the structural dimensions of the prefabricated box girder; S2. The external frame is fixed to the hardened ground with embedded parts. Angle iron is used to fix the bottom width of the beam according to the size of the bottom steel bars of the beam. The points are marked on the angle iron according to the spacing of the steel bars. The main part of the steel bar skeleton is tied at the fixed spacing of the points. S3, placing the inner support into the cavity of the main body of the steel frame, and then adjusting the hydraulic inner mold support frame (6) to an appropriate height before binding the top plate and the entire steel frame.
9. The construction method of the prefabricated box beam assembly type steel bar binding fixture according to claim 1 is characterized by: In step S2, a plurality of bottom web support frames (1) in the outer frame are bolted together by corresponding structures and arranged according to the multiples of the length and width of the beam.
10. The construction method of the prefabricated box beam assembly type steel bar binding fixture according to claim 1, characterized in that: The supporting legs (7) in the inner support in step S3 are arranged according to the bottom plate drainage position.