Zphi 190*12*M*BY reinforced concrete pole production process and pole framework

Abstract

The invention relates to a Z phi 190 * 12 * M * BY reinforced concrete electric pole framework and an electric pole production process, and belongs to the field of electric pole production. The Z phi 190 * 12 * M * BY reinforced concrete electric pole production process comprises the steps that S1, framework welding is conducted, specifically, eight longitudinal stress ribs are selected, and spiral ribs are wound and welded outside the eight longitudinal stress ribs; s2, mounting an anchoring disc; s3, die filling; s4, concrete is poured; s5, mold closing and tensioning are conducted, specifically, the mold is buckled, the framework is tensioned through a tensioning machine, then a releasing and tensioning disc is connected with the anchoring disc, and the releasing and tensioning disc is made to abut against the mold and the nut; s6, centrifugal forming; s7, concrete curing; s8, releasing, wherein longitudinal stress ribs connected with the anchoring disc and the releasing disc are cut, and the framework is released; and S9, demolding. And the effect of greatly reducing the steel consumption in the electric pole production process is achieved. The Z phi 190 * 12 * M * BY reinforced concrete electric pole framework has the effect of reducing steel required in the electric pole production process.

Description

Technical Field

[0001] The present application relates to the field of electric pole production, and in particular to a ZΦ190×12×M×BY reinforced concrete electric pole production process and an electric pole skeleton. Background Art

[0002] Reinforced concrete poles are divided into three types: ordinary reinforced concrete poles (referred to as ordinary poles), prestressed reinforced concrete poles (referred to as prestressed poles) and partially prestressed concrete poles (referred to as partially prestressed poles). Ordinary poles are mostly made of hot-rolled ribbed steel bars for longitudinal stress, and their skeletons can be welded, but the thickness of the protective layer and the cracking of the concrete of the pole body affect the service life and have not been solved so far. When producing large moment bars, the consumption of steel is large and the cost is high; the longitudinal stress reinforcement of prestressed poles is mostly made of prestressed concrete steel wire or prestressed concrete steel hinge wire. The pole skeleton produced with the above two types of steel cannot be welded, but is manually tied and cannot form a strong whole. Therefore, the pole body is easy to break when subjected to external force, and it is difficult to produce large moment bars; the traditional process of partially prestressed poles is to use the common method of hot-rolled ribbed steel bars for prestressed concrete steel wire, which can produce large moment bars, but the consumption of steel is large, and the production process is complex and the production efficiency is low.

[0003] Reinforced concrete poles are widely used in power grid construction, communications, railways and other fields, especially in power grid construction. According to incomplete statistics, in the first 10 months of 2024, State Grid Corporation of China has purchased more than 5 million poles, of which ZΦ190×12m M-class poles account for about 90%. The reason is that after the snowstorm in the south in 2008, in order to ensure the safety of power grid operation, the power grid company increased the force level of the purchased poles from the previous G-class and I-class to the current M-class. Due to technical limitations, most of the ZΦ190×12m M-class poles purchased by State Grid Corporation of China are ordinary poles, which use a large amount of steel, have high procurement costs, and have frequent product quality problems. Summary of the invention

[0004] In order to significantly reduce the amount of steel used in the production process of electric poles, the present application provides a ZΦ190×12×M×BY reinforced concrete electric pole production process and an electric pole frame.

[0005] The present application provides a ZΦ190×12×M×BY reinforced concrete pole production process using the following technical solutions: A ZΦ190×12×M×BY reinforced concrete pole production process, comprising: S1. Frame welding: Select 8 longitudinal force-bearing bars evenly distributed along the axis, and surround and weld spiral bars around the outside of the 8 longitudinal force-bearing bars; S2. Install anchor plates: install anchor plates at both ends of the frame; S3, mold loading: placing the skeleton into the mold, so that the anchor plate at the bottom of the skeleton is located outside the mold and abuts against the end of the mold, and the anchor plate at the top of the skeleton is located inside the skeleton; S4, pouring concrete: pouring concrete into the mold; S5, mold closing and tensioning: buckle the mold, connect it with the anchor plate at the top of the frame by a tensioning machine and tension the frame. After the frame is tensioned to a preset length, connect the tensioning plate with the anchor plate, and make one side of the tensioning plate abut against the mold, and the other side of the tensioning plate abut against the nut connected to the anchor plate; S6, centrifugal molding: placing the mold on a centrifuge to centrifugally mold the concrete inside the mold; S7, concrete curing: curing the concrete inside the mold; S8, tensioning: cutting the longitudinal reinforcement connected to the anchor plate and the tensioning plate, and tensioning the frame; S9. Demoulding: Cut the exposed longitudinal force-bearing bars at both ends of the pole, and then remove the pole from the mould.

[0006] By adopting the above technical solution, 8 longitudinal force-bearing bars are set, and spiral bars are set outside the force-bearing bars, so that the steel required for each pole can be reduced from 180-210 kg to 95 kg, thereby saving steel in the production process of poles, and at the same time improving the production efficiency of poles, improving the qualified rate of finished poles, and thus improving the quality of poles. In addition, by setting up a sheeting plate, the use of the sheeting machine and the production line that cooperates with the sheeting machine in the actual use process is reduced, which increases the production efficiency of the poles on the one hand, and reduces the equipment cost required for the production of poles on the other hand.

[0007] Optionally, the sheet placing plate arrangement includes a plate body, the plate body abuts against a nut on one side of the anchor plate, a side of the plate body away from the anchor plate nut is fixedly connected with a plurality of pillars, and each of the pillars abuts against an adjacent mold on a side away from the plate body.

[0008] By adopting the above technical solution, after the tensioning disc is sleeved onto the outside of the anchor disc, the anchor disc and the tensioning disc can be dropped by cutting the longitudinal stress reinforcement, thereby speeding up the operation process of tensioning the longitudinal stress reinforcement.

[0009] Optionally, the compressive strength of the concrete is not less than 50 MPa.

[0010] By adopting the above technical solution and selecting concrete with a compressive strength greater than or equal to 50 MPa as the outer wall of the pole, the overall strength of the pole can be made to meet the preset strength value.

[0011] Optionally, the tensioning force is set to 490KN.

[0012] By adopting the above technical solution, by tensioning the prestressed concrete steel rod, it is possible to apply prestress to the prestressed concrete steel rod and then eliminate the internal prestress of the prestressed concrete steel rod, thereby reducing the occurrence of cracks on the outer wall of the finished pole.

[0013] Optionally, the wall thickness of the pole is set to 48-60 mm.

[0014] By adopting the above technical solution, the pole can meet the preset strength value after being formed.

[0015] Optionally, the curing process is set to natural curing.

[0016] By adopting the above technical solution and naturally curing the concrete of the pole, the cost required for the curing process can be reduced, and the occurrence of cracking of the outer wall of the pole during the later use can also be reduced.

[0017] Optionally, the curing process is set to steam curing.

[0018] By adopting the above technical solution, after the pole is formed, the pole is steam cured, which can shorten the curing time of the pole concrete and reduce the occurrence of cracking of the concrete on the pole during subsequent use.

[0019] In the second aspect, the present application provides a ZΦ190×12×M×BY reinforced concrete pole skeleton, which adopts the following technical solution: A ZΦ190×12×M×BY reinforced concrete pole skeleton, comprising eight longitudinal force-bearing bars evenly distributed around the same axis, with spiral bars wound around the outside of the eight longitudinal force-bearing bars, wherein: The longitudinal reinforcement bars are prestressed concrete steel bars with a nominal diameter of 12.6 mm; The spiral reinforcement is a cold-drawn low-carbon steel wire for concrete products with a nominal diameter of not less than 3 mm; The pitch of the spiral ribs at the end positions of the frame is not greater than 70 mm, and the pitch of the spiral ribs at the middle position of the frame is not greater than 120 mm.

[0020] By adopting the above technical solution, eight longitudinal force-bearing bars and spiral bars are combined to form a pole skeleton, so that the steel required in the pole production process can be reduced while maintaining the strength of the pole itself.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting 8 prestressed concrete steel bars with a nominal diameter of 12.6 mm as longitudinal force bars, the steel required in the production process of electric poles can be reduced; 2. By using low-carbon steel wire with a nominal diameter of not less than 3 mm as spiral reinforcement, the steel required in the production process of electric poles can be reduced; 3. By setting up a tensioning plate, the tensioning process can be achieved by only cutting the end of the longitudinal force-bearing reinforcement, thereby saving the need to use a tensioning machine to tension the longitudinal force-bearing reinforcement during the tensioning process, thereby speeding up the tensioning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall process of this application.

[0023] Figure 2 Schematic diagram of the rod structure of an embodiment of the present application.

[0024] Figure 3 It is a schematic diagram of the skeleton structure of an embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the disc placement structure of an embodiment of the present application.

[0026] Explanation of reference numerals: 1. rod body; 2. frame; 21. longitudinal force-bearing ribs; 22. spiral ribs; 3. outer wall; 4. placing plate; 41. plate body; 42. support column. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0028] The present application embodiment discloses a ZΦ190×12×M×BY reinforced concrete pole production process, referring to Figure 1-Figure 4 ,include S1. Frame 2 welding: The longitudinal force bars 21 are made of prestressed concrete steel bars with a nominal diameter of 12.6 mm; the upper tolerance of the prestressed concrete steel bars is 12.6+0.2 mm, the lower tolerance of the prestressed concrete steel bars is 12.6-0.2 mm, and the quality of the prestressed concrete steel bars should comply with the GB / T 5223.3 standard. There are 8 longitudinal force bars 21, and the 8 longitudinal force bars 21 are evenly distributed along the axis. The outside of the 8 longitudinal force bars 21 is wound and welded with spiral bars 22. The spiral bars 22 are made of cold-drawn low-carbon steel wire for concrete products with a nominal diameter of not less than 3 mm. The cold-drawn low-carbon steel wire for concrete products should comply with the JC / T 540 standard. In this embodiment, the nominal diameter of the spiral bars is 4 mm. The spiral bars 22 are spirally wound on the outside of the 8 longitudinal force bars 21 by a rolling welding machine. The pitch of the spiral reinforcement 22 located at each end of the longitudinal force reinforcement 21 within 1.5 meters from the middle of the longitudinal force reinforcement 21 is set to be less than or equal to 70 mm. The pitch of the spiral reinforcement 22 located at the middle position of the longitudinal force reinforcement 21 is set to be less than or equal to 120 mm.

[0029] S2. Install the anchor plates: install the anchor plates to the two ends of the frame 2 and make the anchor plates fixedly connected to the adjacent longitudinal force-bearing bars 21 .

[0030] S3, mold installation: place the skeleton 2 inside the mold, and apply a mold release agent to the inner wall of the mold before placing the skeleton 2 inside the mold. The end of the skeleton 2 with a larger diameter is the bottom end of the skeleton 2, and the other end of the skeleton 2 is the top end of the skeleton 2. After placing the skeleton 2 inside the mold, the side of the anchor plate at the bottom end of the skeleton 2 close to the middle position of the skeleton 2 is abutted against the adjacent side wall of the mold end, and the anchor plate at the top end of the skeleton 2 is set inside the mold.

[0031] S4. Pouring concrete: pour concrete into the mold to form the outer wall 3 of the pole, and the concrete has a compressive strength of not less than 50 MPa.

[0032] S5, mold closing and tensioning: buckle the mold outside the skeleton, abut the anchor plate at the lower end of the skeleton 2 against the side wall of the mold, then connect the anchor plate at the upper end of the skeleton 2 to the tensioning rod of the tensioning machine, and then tension the skeleton 2 through the tensioning machine. The tensioning force of the tensioning machine is set to 30%-40% of the design tensile strength of the steel rod for prestressed concrete, specifically 490KN. After tensioning, the tensioning plate 4 is connected to the anchor plate. The tensioning plate 4 includes a disc-shaped disc body 41, and a plurality of pillars 42 are fixedly connected to one side of the disc body 41. The disc body 41 is sleeved to the outside of the anchor plate and the side of the disc body 41 away from the pillars 42 is abutted against the nut on the anchor plate, and the side of each pillar 42 away from the disc body is abutted against the adjacent side wall of the mold.

[0033] S6 centrifugal molding: placing the mold and the internal frame 2 on a centrifuge, and then driving the mold, the internal frame 2 and the concrete to rotate through the centrifuge, so that the concrete fully and evenly covers the outside of the frame 2, and the concrete inside the mold is centrifugally molded.

[0034] S7, concrete curing: curing the rod body 1 formed inside the mold, the curing method can be steam curing or natural curing.

[0035] S8, tensioning: cutting the longitudinal force-bearing bars 21 connected to the anchor plates through multiple pillars 42, then removing the anchor plates connected to both ends of the skeleton and the tensioning plate connected to one of the anchor plates, releasing the tension stored inside the longitudinal force-bearing bars 21 after tensioning.

[0036] S9, demoulding: cutting the ends of the longitudinal force-bearing bars exposed at both ends of the mold, then removing the mold outside the concrete, and taking the rod body 1 inside the mold out of the mold.

[0037] By adopting the above technical solution, the original 180-210 kg of steel used in each pole can be reduced to 95 kg, which greatly saves the steel consumption required in the pole production process, thereby saving carbon emissions in the pole production process. Due to the reduction in steel used, the overall work efficiency of pole production is also improved.

[0038] A ZΦ190×12×M×BY reinforced concrete pole skeleton includes eight longitudinal stress-bearing bars 21, each of which is made of a prestressed concrete steel bar with a nominal diameter of 12.6 mm. The eight longitudinal stress-bearing bars 21 are evenly distributed around the same axis. Spiral bars 22 are spirally rolled welded on the outside of the eight longitudinal stress-bearing bars 21. The spiral bars 22 are made of cold-drawn low-carbon steel wire for concrete products with a nominal diameter of not less than 3 mm. In this embodiment, the nominal diameter of the cold-drawn low-carbon steel wire is set to 4 mm. The pitch of the spiral bars 22 from the end of each spiral bar 22 to 1.5 meters near the middle position of the spiral bar 22 is set to 70 mm, and the pitch of the spiral bars 22 located in the middle position of the longitudinal stress-bearing bars 21 is set to 80 mm.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ZΦ190×12×M×BY reinforced concrete pole production process, used to produce a pole comprising the pole skeleton described in claim 1, characterized in that: include S1, frame (2) welding: select 8 longitudinal force-bearing bars (21) and evenly distribute them along the axis, and surround and weld spiral bars (22) around the outside of the 8 longitudinal force-bearing bars (21); S2. Install anchor plates: install anchor plates at both ends of the frame (2); S3, mold installation: placing the skeleton (2) inside the mold, so that the bottom anchoring plate of the skeleton (2) is located outside the mold and abuts against the end of the mold, and the top anchoring plate of the skeleton (2) is located inside the skeleton (2); S4, pouring concrete: pouring concrete into the mold; S5, mold closing and tensioning: the mold is buckled, and the frame (2) is tensioned by connecting the frame (2) with the anchor plate at the top with a tensioning machine. After the frame (2) is tensioned to a preset length, the tensioning plate (4) is connected with the anchor plate, and one side of the tensioning plate (4) is in contact with the mold, and the other side of the tensioning plate (4) is in contact with the nut connected to the anchor plate; S6, centrifugal molding: placing the mold on a centrifuge to centrifugally mold the concrete inside the mold; S7, concrete curing: curing the concrete inside the mold; S8, tensioning: cutting the longitudinal force-bearing reinforcement (21) connected to the anchor plate and the tensioning plate (4), and tensioning the frame (2); S9, demoulding: cutting the exposed longitudinal force-bearing ribs (21) at both ends of the pole, and then removing the pole from the mold.

2. The ZΦ190×12×M×BY reinforced concrete pole production process according to claim 1 is characterized by: The sheet placing plate (4) is provided with a plate body (41), the plate body (41) abutting against a nut on one side of the anchor plate, a side of the plate body (41) away from the anchor plate nut is fixedly connected with a plurality of pillars, and a side of each pillar away from the plate body (41) abuts against an adjacent mold.

3. The ZΦ190×12×M×BY reinforced concrete pole production process according to claim 1 is characterized by: The compressive strength of the concrete is not less than 50 MPa.

4. The ZΦ190×12×M×BY reinforced concrete pole production process according to claim 1 is characterized by: The tensioning force is set to 490KN.

5. The ZΦ190×12×M×BY reinforced concrete pole production process according to claim 1 is characterized by: The wall thickness of the pole is set to 48-60 mm.

6. The ZΦ190×12×M×BY reinforced concrete pole production process according to claim 1 is characterized by: The curing process is set to natural curing.

7. The ZΦ190×12×M×BY reinforced concrete pole production process according to claim 1 is characterized by: The curing process is set to steam curing.

8. A ZΦ190×12×M×BY reinforced concrete pole skeleton, referring to a ZΦ190×12×M×BY reinforced concrete pole production process as described in claims 1-7, characterized in that: include: Eight longitudinal force-bearing ribs (21) are evenly distributed around the same axis, and spiral ribs (22) are wound around the outside of the eight longitudinal force-bearing ribs (21), wherein: The longitudinal force reinforcement (21) is a prestressed concrete steel bar with a nominal diameter of 12.6 mm; The spiral rib (22) is a cold-drawn low-carbon steel wire for concrete products with a nominal diameter of not less than 3 mm; The pitch of the spiral rib (22) at the end of the frame (2) is not greater than 70 millimeters, and the pitch of the spiral rib (22) at the middle of the frame (2) is not greater than 120 millimeters.

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