A processing and transportation device for the steel bar framework of precast box girders

Abstract

The present invention discloses a processing and transportation device for the steel bar skeleton of precast box girders, which includes a tractor. The rear end of the tractor is connected with a transport vehicle, a main reinforcement threading device and a pipe threading device through a traction frame. The transport vehicle includes a frame mechanism and a plurality of frame roller assemblies connected to the lower end of the frame mechanism. The frame mechanism includes a chassis, and the upper end of the chassis is connected with a front limit mechanism, a middle installation mechanism and a rear limit mechanism. The front limit mechanism includes two first longitudinal brackets. The middle installation mechanism includes two first external processing support frames. The rear limit mechanism includes two second longitudinal brackets. The main reinforcement threading device includes a first moving frame and a steel bar threading mechanism connected to the upper end of the first moving frame. The rear end of the chassis is connected with a first chassis connecting rod, and the first moving frame is movably connected with the first chassis. The pipe threading device includes a second moving frame, and the second moving frame is movably connected with the first moving frame. This device can improve the processing efficiency of the box girder skeleton and enhance the safety and stability of processing.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering, and particularly to a processing and transportation device for a precast box girder steel bar skeleton. Background Art

[0002] With the development of the economy, more and more highway bridges are being built, especially the construction of expressways. During the construction of highway bridges, precast box girders are used more and more. Generally, in the project department of an engineering company, a corresponding processing factory for manufacturing precast box girders will be built. During the manufacturing process of precast box girders, the processing of the box girder steel bar skeleton is particularly important. The box girder steel bar skeleton is generally bound and processed in a binding workshop. During the processing of the precast box girder steel bar skeleton, the time occupied by steel bar binding is too long. Therefore, the construction efficiency of the precast box girder steel bar skeleton in the binding workshop is low, a large amount of labor is invested, and the construction is not convenient, resulting in a slow construction progress and thus increasing the construction cost. All the processed precast box girder steel bar skeletons are lifted by a gantry crane and then transported to the precast box girder processing site. Since the overall weight of the box girder steel bar skeleton is heavy, although it is convenient after being lifted by the gantry crane, the overall movement is slow. And during the lifting process, due to its own weight, the box girder steel bar skeleton is prone to deformation, and due to its large weight, it will also cause safety hazards. Summary of the Invention

[0003] The purpose of the present invention is to provide a processing and transportation device for a precast box girder steel bar skeleton, which can improve the processing efficiency of the box girder skeleton, and greatly improve the safety and stability, with high creativity.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A processing and transportation device for a precast box girder steel bar skeleton, comprising a tractor, the rear end of the tractor is connected with a transport vehicle through a traction frame, and the rear end of the transport vehicle is connected with a main bar threading device and a pipe threading device; the transport vehicle includes a frame mechanism and a plurality of frame roller assemblies connected to the lower end of the frame mechanism;

[0006] The frame mechanism includes a chassis, the upper end of the chassis is connected with a front limit mechanism, a middle installation mechanism and a rear limit mechanism. The front limit mechanism includes two first longitudinal brackets, and the two first longitudinal brackets are connected in parallel to the upper front part of the chassis. A plurality of first diagonal braces are connected to the inner side of the first longitudinal brackets;

[0007] The middle installation mechanism includes two first outer processing support frames, the first outer processing support frames are connected to the side ends of the middle part of the chassis and the two first outer processing support frames are arranged in mirror symmetry. A second diagonal brace is connected to the inner side of the first outer processing support frame;

[0008] The rear limit mechanism includes two second longitudinal brackets, which are connected in parallel to the upper rear part of the chassis. A plurality of second diagonal braces are connected to the inner side of the second longitudinal brackets;

[0009] The main reinforcement threading device includes a first moving frame and a steel bar threading mechanism connected to the upper end of the first moving frame. A first chassis connecting rod is connected to the rear end of the chassis. The front end of the first moving frame is sleeved on the first chassis connecting rod and positioned by a first bolt assembly;

[0010] The pipe threading device includes a second moving frame. The front end of the second moving frame is sleeved on the rear end of the first moving frame and positioned by a second bolt assembly. A pipe threading mechanism is connected to the upper end of the second moving frame.

[0011] Preferably, the chassis includes a first rectangular frame, and a first cross brace is connected inside the first rectangular frame; there are a plurality of first cross braces, and the plurality of first cross braces are longitudinally distributed in parallel in the first rectangular frame; the traction frame is connected to the front end of the first rectangular frame, the traction frame is in the shape of a triangular frame, and a traction hanging hole is provided inside the front end of the traction frame.

[0012] Preferably, the vehicle frame roller assembly includes vehicle frame steel rollers, and a roller front support and a roller rear support are connected to the vehicle frame steel rollers;

[0013] The roller front support and the roller rear support are symmetrically arranged with respect to the center of the vehicle frame steel roller, and both the roller front support and the roller rear support are connected to the lower end of the first rectangular frame by bolts;

[0014] The first longitudinal bracket includes a second rectangular frame, and a plurality of first structural reinforcing bars are arranged inside the second rectangular frame. The lower ends of the first structural reinforcing bars are connected to the first rectangular frame;

[0015] The upper end of the first diagonal brace is connected to the first structural reinforcing bar, and the lower end of the first diagonal brace is connected to the first cross brace.

[0016] Preferably, the first external processing support frame includes a first upper U-shaped frame and a second lower U-shaped frame. The first upper U-shaped frame is connected to the second lower U-shaped frame through a first connecting vertical rod, and a second structural reinforcing bar is arranged inside the first external processing support frame;

[0017] A third diagonal brace and a fourth diagonal brace are connected to the side end of the first external processing support frame. The third diagonal brace is connected to the first longitudinal bracket, and the fourth diagonal brace is connected to the second longitudinal bracket. A first working support for workers to stand on is arranged inside the second lower U-shaped frame.

[0018] Preferably, the second longitudinal bracket includes a third rectangular frame, and a plurality of third structural reinforcing bars are arranged inside the third rectangular frame. The lower ends of the third structural reinforcing bars are connected to the first rectangular frame;

[0019] The upper end of the second diagonal brace is connected to the third structural reinforcement bar, and the lower end of the second diagonal brace is connected to the first cross brace beam.

[0020] Preferably, the first moving frame includes a first middle support frame. Two first insertion pipes are connected to the front end of the first middle support frame. Two first insertion rods are connected to the rear end of the first middle support frame. Four first legs are connected to the lower end of the first middle support frame. Each lower end of the first legs is connected to a first roller assembly.

[0021] There are two first bottom frame connecting rods. A plurality of first connecting rod through holes are formed in each first bottom frame connecting rod. A first insertion through hole is formed in the first insertion pipe.

[0022] After the first insertion pipe is sleeved on the first bottom frame connecting rod, it is positioned and connected by a first insertion bolt connected in the first connecting rod through hole and the first insertion through hole.

[0023] Preferably, the steel bar threading mechanism includes a first threading support frame, a first threading roller assembly and a second threading guiding assembly. The first threading support frame is connected to the upper end of the first middle support frame. A first motor assembly is connected to the first threading support frame.

[0024] The first threading roller assembly includes a first upper threading roller and a first lower threading roller. The first upper threading roller is connected to the first threading support frame. The first lower threading roller is located below the first upper threading roller and is connected to the first middle support frame. The first motor assembly is connected to the first upper threading roller through a first transmission chain.

[0025] Preferably, the second threading guiding assembly is located behind the first threading roller assembly. The second threading guiding assembly includes a second upper guiding roller and a second lower guiding roller. The second upper guiding roller is connected to the first threading support frame. The second lower guiding roller is located below the second upper guiding roller and is connected to the first middle support frame. The first upper threading roller is connected to the second upper guiding roller through a second transmission chain.

[0026] Preferably, the second moving frame includes a second middle support frame. Two second insertion pipes are connected to the front end of the second middle support frame. Four second legs are connected to the lower end of the second middle support frame. Each lower end of the second legs is connected to a second roller assembly.

[0027] A second insertion through hole is provided on the second insertion pipe. A third insertion through hole is formed in the first insertion rod. After the second insertion pipe is sleeved on the first insertion rod, it is positioned and connected by a second insertion bolt connected in the second insertion through hole and the third insertion through hole.

[0028] Preferably, the pipe threading mechanism includes a first pipe threading support frame and a first pipe threading roller assembly. The first pipe threading support frame is connected to the upper end of the second middle support frame through four third legs. A second motor assembly is connected to the first pipe threading support frame.

[0029] The first pipe-passing roller assembly includes a first upper pipe-passing roller and a first lower pipe-passing roller, which are connected to a first pipe-passing support frame; the first upper pipe-passing roller is located above the first lower pipe-passing roller; the second motor assembly is connected to the first upper pipe-passing roller through a third transmission chain; the first upper pipe-passing roller and the first lower pipe-passing roller are combined rubber rollers, and the combined rubber roller includes an inner steel pipe, a rubber layer coated on the outer side of the inner steel pipe, and a sponge layer coated on the outer side of the rubber layer.

[0030] The beneficial effects of the present invention are as follows:

[0031] During the processing of the steel bar skeleton of the precast box girder, since the main steel bars at the bottom plate of the box girder are too long and heavy, it is difficult to thread the tendons on the bottom and web binding jigs. Therefore, first hoist the bottom and web steel bar skeleton tied on the jig onto the transport vehicle, and then use a tractor to pull it out of the steel bar shed and use the main steel bar threading device on the transport vehicle to thread the tendons, which is labor-saving and highly efficient. Vacate the binding jig for the binding of the next box girder, saving the time occupied by the steel bars on the binding jig. Moreover, the corrugated pipes at the bottom and web of the box girder and the steel bars of the middle cross beam of the box girder are also installed and tied on the transport vehicle, forming a flowing water construction operation, which not only improves the construction efficiency but also saves a large amount of labor, and at the same time ensures the construction progress.

[0032] The above-mentioned transportation and processing equipment overcomes the shortcomings and deficiencies in the traditional binding and transportation construction of the steel bar skeleton of the box girder. This transportation and processing equipment is convenient to use, highly efficient, speeds up the construction progress, and shortens the steel bar forming time. It can be used for the binding and transportation construction work of the steel bar skeleton of the precast box girder. The transportation and processing equipment in the present invention has a simple structure and is easy to manufacture. The whole transport vehicle is a combined steel structure and can be welded and processed by reasonably using the waste steel in the project. The transportation and processing equipment is easy to operate, has a high construction efficiency, reduces the construction cost, improves the production efficiency, and the transportation of the steel bar skeleton is also very safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of the overall structure of the processing and transportation equipment for the steel bar skeleton of the precast box girder.

[0035] Figure 2 It is a schematic diagram of the connection structure between the transport vehicle and the tendon threading device.

[0036] Figure 3 It is a schematic diagram of the overall structure of the transport vehicle.

[0037] Figure 4 It is a schematic diagram of the connection structure of the chassis, the front limit mechanism and the middle installation mechanism.

[0038] Figure 5 It is a schematic diagram of the connection structure of the rear limit mechanism, the beam threading device and the pipe threading device.

[0039] Figure 6 It is a schematic diagram of the connection structure of the beam threading device and the pipe threading device.

[0040] Figure 7 It is a schematic diagram of the connection structure of the rear limit mechanism and the beam threading device.

[0041] Figure 8 It is a schematic diagram of the overall structure of the beam threading device.

[0042] Figure 9 It is a schematic diagram of the overall structure of the pipe threading device. Specific embodiments

[0043] The present invention provides a processing and transportation device for the steel bar skeleton of precast box girders. To make the purpose, technical solution and effects of the present invention clearer and more definite, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The present invention will be described in detail below with reference to the accompanying drawings:

[0045] Embodiment 1

[0046] Combined with Figures 1 to 9 , a processing and transportation device for the steel bar skeleton of precast box girders includes a tractor, which can use a forklift as the transportation power. The rear end of the tractor is connected to a transport vehicle through a traction frame 1, and the rear end of the transport vehicle is connected to a main bar threading device 2 and a pipe threading device 3; the transport vehicle includes a frame mechanism 4 and a plurality of frame roller assemblies 5 connected to the lower end of the frame mechanism 4.

[0047] The frame mechanism 4 includes a chassis 41, and the upper end of the chassis 41 is connected with a front limit mechanism 6, a middle installation mechanism 7 and a rear limit mechanism 8. The front limit mechanism 6 includes two first longitudinal brackets 61, and the two first longitudinal brackets 61 are connected to the upper front part of the chassis 41 in parallel, and a plurality of first diagonal braces 62 are connected to the inner side of the first longitudinal brackets 61.

[0048] The middle installation mechanism 7 includes two first external processing support frames 71, the first external processing support frames 71 are connected to the side ends of the middle part of the chassis 41 and the two first external processing support frames 71 are arranged symmetrically in a mirror image, and a second diagonal brace 72 is connected to the inner side of the first external processing support frames 71.

[0049] The rear limit mechanism 8 includes two second longitudinal brackets 81 which are connected in parallel to the upper rear part of the chassis 41, and a plurality of second diagonal braces 82 are connected to the inner sides of the second longitudinal brackets 81.

[0050] The main reinforcement threading device 2 includes a first moving frame 21 and a steel bar threading mechanism 22 connected to the upper end of the first moving frame 21. A first chassis connecting rod 42 is connected to the rear end of the chassis 41, and the front end of the first moving frame 21 is sleeved on the first chassis connecting rod 42 and positioned by a first bolt assembly.

[0051] The pipe threading device 3 includes a second moving frame 31. The front end of the second moving frame 31 is sleeved on the rear end of the first moving frame 21 and positioned by a second bolt assembly, and a pipe threading mechanism 32 is connected to the upper end of the second moving frame 31.

[0052] The chassis 41 includes a first rectangular frame 411, and a first cross brace 412 is connected inside the first rectangular frame 411; there are a plurality of first cross braces 412 which are longitudinally distributed in parallel in the first rectangular frame 411; the traction frame 1 is connected to the front end of the first rectangular frame 411, the traction frame 1 is in the shape of a triangular frame, and a traction hanging hole 11 is provided inside the front end of the traction frame 1.

[0053] The vehicle frame roller assembly 5 includes a vehicle frame steel roller 51, and a roller front support 52 and a roller rear support 53 are connected to the vehicle frame steel roller 51. The roller front support 52 and the roller rear support 53 are symmetrically arranged with respect to the center of the vehicle frame steel roller 51, and both the roller front support 52 and the roller rear support 53 are connected to the lower end of the first rectangular frame 411 by bolts.

[0054] The first longitudinal bracket 61 includes a second rectangular frame 611, and a plurality of first structural reinforcing bars 612 are arranged inside the second rectangular frame 611. The lower ends of the first structural reinforcing bars 612 are connected to the first rectangular frame 411.

[0055] The upper end of the first diagonal brace 62 is connected to the first structural reinforcing bar 612, and the lower end of the first diagonal brace 62 is connected to the first cross brace 412.

[0056] The first external processing support frame 71 includes a first upper U-shaped frame 711 and a second lower U-shaped frame 712. The first upper U-shaped frame 711 is connected to the second lower U-shaped frame 712 through a first connecting vertical rod 713, and a second structural reinforcing bar 714 is arranged inside the first external processing support frame 71.

[0057] A third diagonal brace 715 and a fourth diagonal brace 716 are connected to the side end of the first external processing support frame 71. The third diagonal brace 715 is connected to the first longitudinal bracket 61, and the fourth diagonal brace 716 is connected to the second longitudinal bracket 81. A first working support frame 717 for workers to stand on is arranged inside the second lower U-shaped frame 712.

[0058] The second longitudinal support 81 includes a third rectangular frame 811, and a plurality of third structural reinforcing bars 812 are arranged inside the third rectangular frame 811. The lower ends of the third structural reinforcing bars 812 are connected to the first rectangular frame 411.

[0059] The upper end of the second diagonal brace 82 is connected to the third structural reinforcing bar 812, and the lower end of the second diagonal brace 82 is connected to the first cross beam 412.

[0060] The first moving frame 21 includes a first middle support frame 23. Two first insertion tubes 24 are connected to the front end of the first middle support frame 23. Two first insertion rods 25 are connected to the rear end of the first middle support frame 23. Four first legs 26 are connected to the lower end of the first middle support frame 23, and a first roller assembly 27 is connected to the lower end of each first leg 26;

[0061] There are two first chassis connecting rods 42, and a plurality of first connecting rod through holes are provided on each first chassis connecting rod 42. A first insertion through hole is provided on the first insertion tube 24;

[0062] After the first insertion tube 24 is sleeved on the first chassis connecting rod 42, it is positioned and connected by a first insertion bolt connected in the first connecting rod through hole and the first insertion through hole.

[0063] The steel bar threading mechanism 22 includes a first threading support frame 221, a first threading roller assembly and a second threading guiding assembly. The first threading support frame 221 is connected to the upper end of the first middle support frame 23, and a first motor assembly 222 is connected to the first threading support frame 221.

[0064] The first threading roller assembly includes a first upper threading roller 223 and a first lower threading roller 224. The first upper threading roller 223 is connected to the first threading support frame 221; the first lower threading roller 224 is located below the first upper threading roller 223 and is connected to the first middle support frame 23. The first motor assembly 22 is connected to the first upper threading roller 223 through a first transmission chain.

[0065] The second threading guiding assembly is located behind the first threading roller assembly. The second threading guiding assembly includes a second upper guiding roller 225 and a second lower guiding roller 226. The second upper guiding roller 225 is connected to the first threading support frame 221. The second lower guiding roller 226 is located below the second upper guiding roller 225 and is connected to the first middle support frame 23; the first upper threading roller 223 is connected to the second upper guiding roller 225 through a second transmission chain.

[0066] The second moving frame 31 includes a second middle support frame 33. Two second insertion tubes 34 are connected to the front end of the second middle support frame 33. Four second legs 35 are connected to the lower end of the second middle support frame 33. A second roller assembly 36 is connected to the lower end of each second leg 35.

[0067] A second insertion through hole is provided on the second insertion tube 34, and a third insertion through hole is provided on the first insertion rod 25. After the second insertion tube 34 is sleeved on the first insertion rod 25, it is positioned and connected by a second insertion bolt connected in the second insertion through hole and the third insertion through hole.

[0068] The pipe threading mechanism 32 includes a first pipe threading support frame 321 and a first pipe threading roller assembly. The first pipe threading support frame 321 is connected to the upper end of the second middle support frame 33 through four third legs 322. A second motor assembly 323 is connected to the first pipe threading support frame 321.

[0069] The first pipe threading roller assembly includes a first upper pipe threading roller 324 and a first lower pipe threading roller 325. The first upper pipe threading roller 324 and the first lower pipe threading roller 325 are connected to the first pipe threading support frame 321. The first upper pipe threading roller 324 is located above the first lower pipe threading roller 325, and a gap is left between the first upper pipe threading roller 324 and the first lower pipe threading roller 325. The second motor assembly 323 is connected to the first upper pipe threading roller 324 through a third drive chain.

[0070] Embodiment 2

[0071] A processing and transportation device for the steel bar skeleton of a precast box girder includes a tractor. It is characterized in that a transport vehicle is connected to the rear end of the tractor through a traction frame 1, and a main bar threading device 2 is connected to the rear end of the transport vehicle. The transport vehicle includes a frame mechanism 4 and a plurality of frame roller assemblies 5 connected to the lower end of the frame mechanism 4.

[0072] The frame mechanism 4 includes a chassis 41. A front limiting mechanism 6, a middle mounting mechanism 7 and a rear limiting mechanism 8 are connected to the upper end of the chassis 41. The front limiting mechanism 6 includes two first longitudinal brackets 61. The two first longitudinal brackets 61 are connected to the upper front end of the chassis 41 in parallel. A plurality of first diagonal braces 62 are connected to the inner side of the first longitudinal brackets 61.

[0073] The middle mounting mechanism 7 includes two first outer processing support frames 71. The first outer processing support frames 71 are connected to the side ends of the middle part of the chassis 41 and are arranged symmetrically in a mirror image. A second diagonal brace 72 is connected to the inner side of the first outer processing support frames 71.

[0074] The rear limiting mechanism 8 includes two second longitudinal brackets 81. The two second longitudinal brackets 81 are connected to the upper rear end of the chassis 41 in parallel. A plurality of second diagonal braces 82 are connected to the inner side of the second longitudinal brackets 81.

[0075] The main reinforcement threading device 2 includes a first moving frame 21 and a steel bar threading mechanism 22 connected to the upper end of the first moving frame 21. A first chassis connecting rod 42 is connected to the rear end of the chassis 41. The front end of the first moving frame 21 is sleeved on the first chassis connecting rod 42 and positioned by a first bolt assembly.

[0076] Lift the bottom web and top plate steel bar skeletons tied on the box girder tying jig onto the transport vehicle. Use a forklift as the power for towing the transport vehicle to transport the steel bar skeletons to the beam manufacturing area for use. Since the main reinforcement bars of the box girder bottom plate are too long and heavy, it is difficult to thread them on the bottom web tying jig. Therefore, lift the bottom web steel bar skeleton tied on the jig onto the transport vehicle, then pull out of the steel bar shed, and use a threading machine to thread the bars on the transport vehicle. This is both labor-saving and highly efficient, freeing up the tying jig for tying the next box girder and saving the time occupied by the steel bars on the tying jig. Then, manually install the corrugated pipe into the precast box girder steel bar skeleton.

[0077] Embodiment 3

[0078] A processing and transportation device for a precast box girder steel bar skeleton includes a tractor. A transport vehicle, a main reinforcement threading device 2, and a pipe threading device 3 are connected to the rear end of the tractor through a towing frame 1. The transport vehicle includes a frame mechanism 4 and a plurality of frame roller assemblies 5 connected to the lower end of the frame mechanism 4.

[0079] The rear limit mechanism 8 includes two second longitudinal supports 81. The two second longitudinal supports 81 are connected in parallel to the upper rear part of the chassis 41. A plurality of second diagonal braces 82 are connected to the inner sides of the second longitudinal supports 81. The main reinforcement threading device 2 includes a first moving frame 21 and a steel bar threading mechanism 22 connected to the upper end of the first moving frame 21. A first chassis connecting rod 42 is connected to the rear end of the chassis 41. The front end of the first moving frame 21 is sleeved on the first chassis connecting rod 42 and positioned by a first bolt assembly.

[0080] The pipe threading device 3 includes a second moving frame 31. The front end of the second moving frame 31 is sleeved on the rear end of the first moving frame 21 and positioned by a second bolt assembly. A pipe threading mechanism 32 is connected to the upper end of the second moving frame 31. The steel bar threading mechanism 22 includes a first threading support frame 221, a first threading roller assembly, and a second threading guiding assembly. The first threading support frame 221 is connected to the upper end of the first middle support frame 23. A first motor assembly 222 is connected to the first threading support frame 221. The pipe threading mechanism 32 includes a first pipe threading support frame 321 and a first pipe threading roller assembly. The first pipe threading support frame 321 is connected to the upper end of the second middle support frame 33 through four third legs 322. A second motor assembly 323 is connected to the first pipe threading support frame 321.

[0081] After the bottom web and top plate steel bar skeletons in the above-mentioned precast box girder steel bar skeleton are processed, the main steel bars are processed and installed using the main steel bar threading device 2. When the main steel bar threading device 2 is in use, after the main steel bars pass through the first threading roller assembly and the second threading guiding assembly, when the main steel bars are pushed and installed by workers, the main steel bars are flattened and assisted by the main steel bar threading device 2 to complete more convenient installation, and it is more convenient for disassembly, use and later maintenance.

[0082] After the installation of the main steel bars is completed, the corrugated pipe to be installed is passed through the first pipe threading roller assembly in the pipe threading device 3. The first upper pipe threading roller 324 and the first lower pipe threading roller 325 in the first pipe threading roller assembly are combined rubber rollers. The combined rubber roller includes an inner steel pipe, a rubber layer wrapped outside the inner steel pipe, and a sponge layer wrapped outside the rubber layer. The combined use of the rubber layer and the sponge layer enables the combined rubber roller to have a certain frictional assistance and can also protect the corrugated pipe from being squeezed and damaged.

[0083] During the installation process of the corrugated pipe, since the corrugated pipe is very long, multiple workers are required to continuously push the corrugated pipe forward. The use of the pipe threading device saves manpower. Only one worker is needed to guide the direction of the corrugated pipe in the front and one worker for feeding in the rear, and through the rotational assistance of the pipe threading device, the installation of the corrugated pipe can be efficiently completed. The above-mentioned processing and transportation equipment for the precast box girder steel bar skeleton completes the binding of the middle crossbeam steel bars on the middle installation mechanism 7.

[0084] Therefore, during the processing of the precast box girder steel bar skeleton, due to the excessive length and weight of the main steel bars at the bottom of the box girder, it is difficult to thread the main steel bars on the bottom web binding jig. Therefore, first hoist the bottom web steel bar skeleton bound on the jig onto the transport vehicle, and then use the tractor to pull out the steel bar shed and use the main steel bar threading device 2 on the transport vehicle for threading. This is both labor-saving and highly efficient. The binding jig is vacated for the binding of the next box girder, saving the time occupied by the steel bars on the binding jig. Moreover, the corrugated pipes at the bottom and web of the box girder and the steel bars of the middle crossbeam of the box girder are also installed and bound on the transport vehicle, forming a flow operation. This not only improves the construction efficiency but also saves a large amount of labor, and at the same time ensures the construction progress.

[0085] The above-mentioned transportation and processing equipment overcomes the shortcomings and deficiencies in the traditional binding and transportation construction of the box girder steel bar skeleton. This transportation and processing equipment is convenient to use, has high efficiency, speeds up the construction progress, and shortens the steel bar forming time. It can be used for the binding and transportation construction work of the precast box girder steel bar skeleton. The transportation and processing equipment in the present invention has a simple structure and is easy to manufacture. The entire transport vehicle is a combined steel structure and can be welded and processed using the waste steel in the project reasonably. The transportation and processing equipment is convenient to operate, has high construction efficiency, reduces the construction cost, improves the production efficiency, and the transportation of the steel bar skeleton is also very safe and reliable.

[0086] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0087] In the present invention, the parts not described can be implemented by adopting or referring to the existing technologies.

[0088] Of course, the above description is not a limitation to the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. A processing and transportation device for the steel bar framework of precast box girders, comprising a tractor truck, characterized in that, a transport vehicle is connected to the rear end of the tractor truck through a towing frame, and a main bar threading device and a pipe threading device are connected to the rear end of the transport vehicle; the transport vehicle includes a frame mechanism and a plurality of frame roller assemblies connected to the lower end of the frame mechanism; the frame mechanism includes a chassis, and a front limit mechanism, a middle mounting mechanism and a rear limit mechanism are connected to the upper end of the chassis. The front limit mechanism includes two first longitudinal brackets, and the two first longitudinal brackets are connected to the upper front part of the chassis in parallel. A plurality of first diagonal braces are connected to the inner side of the first longitudinal bracket; the middle mounting mechanism includes two first external processing support frames, and the first external processing support frames are connected to the side ends of the middle part of the chassis and are arranged symmetrically in a mirror image. A second diagonal brace is connected to the inner side of the first external processing support frame; the rear limit mechanism includes two second longitudinal brackets, and the two second longitudinal brackets are connected to the upper rear part of the chassis in parallel. A plurality of second diagonal braces are connected to the inner side of the second longitudinal bracket; the main bar threading device includes a first moving frame and a steel bar threading mechanism connected to the upper end of the first moving frame. A first chassis connecting rod is connected to the rear end of the chassis, and the front end of the first moving frame is sleeved on the first chassis connecting rod and positioned by a first bolt assembly; the pipe threading device includes a second moving frame, the front end of the second moving frame is sleeved on the rear end of the first moving frame and positioned by a second bolt assembly, and a pipe threading mechanism is connected to the upper end of the second moving frame; the chassis includes a first rectangular frame, and a first cross brace is connected inside the first rectangular frame; there are a plurality of first cross braces, and the plurality of first cross braces are longitudinally distributed in the first rectangular frame in parallel; the towing frame is connected to the front end of the first rectangular frame, the towing frame is in the shape of a triangular frame, and a towing hitch hole is opened inside the front end of the towing frame; the first external processing support frame includes a first upper U-shaped frame and a second lower U-shaped frame, and the first upper U-shaped frame is connected to the second lower U-shaped frame through a first connecting vertical rod. A second structural reinforcing rod is arranged inside the first external processing support frame; a third diagonal brace and a fourth diagonal brace are connected to the side end of the first external processing support frame. The third diagonal brace is connected to the first longitudinal bracket, and the fourth diagonal brace is connected to the second longitudinal bracket. A first working support frame for workers to stand on is arranged inside the second lower U-shaped frame.

2. The processing and transportation device for the steel bar framework of precast box girders according to claim 1, characterized in that, the frame roller assembly includes a frame steel roller, and a roller front support and a roller rear support are connected to the frame steel roller; the roller front support and the roller rear support are arranged symmetrically in a mirror image with respect to the center of the frame steel roller, and both the roller front support and the roller rear support are connected to the lower end of the first rectangular frame through bolts; the first longitudinal bracket includes a second rectangular frame, and a plurality of first structural reinforcing rods are arranged inside the second rectangular frame. The lower ends of the first structural reinforcing rods are connected to the first rectangular frame; the upper end of the first diagonal brace is connected to the first structural reinforcing rod, and the lower end of the first diagonal brace is connected to the first cross brace.

3. The processing and transportation device for the steel bar framework of precast box girders according to claim 1, characterized in that, The second longitudinal support includes a third rectangular frame, and a plurality of third structural reinforcing bars are arranged inside the third rectangular frame. The lower ends of the third structural reinforcing bars are connected to the first rectangular frame; The upper end of the second diagonal brace is connected to the third structural reinforcing bar, and the lower end of the second diagonal brace is connected to the first cross brace.

4. A processing and transportation device for the steel bar skeleton of a precast box girder according to claim 1, characterized in that, The first moving frame includes a first middle support frame. Two first insertion pipes are connected to the front end of the first middle support frame. Two first insertion rods are connected to the rear end of the first middle support frame. Four first legs are connected to the lower end of the first middle support frame, and a first roller assembly is connected to the lower end of each first leg; There are two first bottom frame connecting rods, and a plurality of first connecting rod through holes are formed in each first bottom frame connecting rod. A first insertion through hole is formed in the first insertion pipe; After the first insertion pipe is sleeved on the first bottom frame connecting rod, it is positioned and connected by a first insertion bolt connected in the first connecting rod through hole and the first insertion through hole.

5. A processing and transportation device for the steel bar skeleton of a precast box girder according to claim 4, characterized in that, The steel bar threading mechanism includes a first threading support frame, a first threading roller assembly and a second threading guiding assembly. The first threading support frame is connected to the upper end of the first middle support frame, and a first motor assembly is connected to the first threading support frame; The first threading roller assembly includes a first upper threading roller and a first lower threading roller. The first upper threading roller is connected to the first threading support frame; the first lower threading roller is located below the first upper threading roller and is connected to the first middle support frame; the first motor assembly is connected to the first upper threading roller through a first transmission chain.

6. A processing and transportation device for the steel bar skeleton of a precast box girder according to claim 5, characterized in that, The second threading guiding assembly is located behind the first threading roller assembly. The second threading guiding assembly includes a second upper guiding roller and a second lower guiding roller. The second upper guiding roller is connected to the first threading support frame. The second lower guiding roller is located below the second upper guiding roller and is connected to the first middle support frame; the first upper threading roller is connected to the second upper guiding roller through a second transmission chain.

7. A processing and transportation device for the steel bar skeleton of a precast box girder according to claim 4, characterized in that, The second moving frame includes a second middle support frame. Two second insertion pipes are connected to the front end of the second middle support frame. Four second legs are connected to the lower end of the second middle support frame, and a second roller assembly is connected to the lower end of each second leg; A second insertion through hole is provided on the second insertion pipe, and a third insertion through hole is formed on the first insertion rod; after the second insertion pipe is sleeved on the first insertion rod, it is positioned and connected by a second insertion bolt connected in the second insertion through hole and the third insertion through hole.

8. A processing and transportation device for the steel bar skeleton of a precast box girder according to claim 7, characterized in that, The pipe threading mechanism includes a first pipe threading support frame and a first pipe threading roller assembly. The first pipe threading support frame is connected to the upper end of the second middle support frame through four third legs, and a second motor assembly is connected to the first pipe threading support frame; The first pipe-passing roller assembly includes a first upper pipe-passing roller and a first lower pipe-passing roller, and the first upper pipe-passing roller and the first lower pipe-passing roller are connected to a first pipe-passing support frame; the first upper pipe-passing roller is located above the first lower pipe-passing roller; the second motor assembly is connected to the first upper pipe-passing roller through a third transmission chain; the first upper pipe-passing roller and the first lower pipe-passing roller are combined rubber rollers, and the combined rubber roller includes an inner steel pipe, a rubber layer coated on the outer side of the inner steel pipe, and a sponge layer coated on the outer side of the rubber layer.

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