Erecting ring suitable for reinforcement cage, reinforcement cage and electric pole

Abstract

The utility model belongs to the technical field of electric poles, and particularly relates to an erecting ring suitable for a reinforcement cage, the reinforcement cage and an electric pole. The erection ring suitable for the reinforcement cage comprises an inner ring and an outer ring, wherein the inner ring is of a closed circular structure; the outer ring is fixedly installed on the outer side of the inner ring, a plurality of grooves are formed in the outer ring so that the outer ring can be divided into a plurality of arc sections distributed at intervals, non-prestressed tendons are placed in the grooves, and prestressed tendons are placed on the outer sides of the arc sections; the outer contour circle of the non-prestressed tendon and the outer contour circle of the prestressed tendon are concentric circles and are equal in radius. The erecting ring adopts the unique design of the inner ring and the outer ring, so that the thickness of the non-prestressed tendon and the thickness of the prestressed tendon protective layer are consistent, and uneven corrosion of the reinforcing steel bars caused by thickness difference is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric pole, especially relates to a stand-up ring suitable for reinforcement cage, reinforcement cage and electric pole. BACKGROUND

[0002] In the field of power transmission, overhead line is the key infrastructure to ensure efficient power transmission, and as an important carrier, ring-shaped concrete electric pole bears the heavy responsibility of supporting electric wires and ensuring stable power transmission. In various overhead line projects, whether it is the upgrading and reconstruction of urban power grids or the construction of power supply in remote areas, ring-shaped concrete electric poles have been widely used. Among them, partially prestressed concrete electric poles have good bearing capacity and crack resistance, and have excellent performance in meeting the power transmission needs under different terrain and climate conditions, and are favored by the power industry.

[0003] The concrete electric pole is mainly composed of main reinforcement, stand-up ring and spiral reinforcement. The main reinforcement is the main force component of the electric pole to bear tension and pressure, and its performance is directly related to the bearing capacity of the electric pole. The spiral reinforcement enhances the torsional and shearing resistance of the concrete and improves the overall stability of the electric pole. The stand-up ring plays an important auxiliary role in the whole structure, and its main function is to ensure the thickness of the protective layer of the main reinforcement of the electric pole, so that the main reinforcement is isolated from the air to prevent the main reinforcement from expanding and cracking due to oxidation, and thus avoid a series of vicious cycles such as tissue aging, strength reduction, and early decay of pole segments. Once these problems occur, not only will they affect the normal service life of the electric pole, but also may pose a serious threat to the safety and stability of power transmission.

[0004] At present, the production process of reinforcement cage is usually to use a steel bar to form a circle as a stand-up ring by professional equipment, then arrange the stand-up rings on the same axis at a set interval, place the main reinforcement on the stand-up ring, and finally tightly wrap the spiral reinforcement on the outside of the main reinforcement at a set interval, thereby forming a complete reinforcement cage. However, with the increasing requirements for the performance of concrete electric poles in power engineering construction, especially in partially prestressed concrete electric poles, the main reinforcement adopts a mixed reinforcement method, i.e. including prestressed reinforcement and non-prestressed reinforcement. Among them, the prestressed reinforcement is generally stress-relieving steel wire or steel strand, and the non-prestressed reinforcement is generally HRB400 or HRB500 grade hot-rolled reinforcement. Due to the significant differences in specifications and mechanical properties between prestressed reinforcement and non-prestressed reinforcement, the stand-up ring using the traditional process cannot guarantee the uniformity of the protective layer thickness of the prestressed reinforcement and the non-prestressed reinforcement. According to actual detection and engineering feedback, the maximum difference in protective layer thickness between the two can reach 15mm, which will cause uneven stress of the reinforcement in the concrete, greatly weakening the durability and bearing capacity of the electric pole and increasing the safety hazards in the operation of the power line.

[0005] Based on this, the utility model discloses a novel frame circle suitable for reinforcing cage, reinforcing cage and electric pole to overcome the above-mentioned defects. Utility model content

[0006] One purpose of the utility model is to provide a frame circle suitable for reinforcing cage, which adopts unique inner circle and outer circle design, ensures that the non-prestressed reinforcement and the prestressed reinforcement protective layer thickness are consistent, and avoids uneven corrosion of steel bars caused by thickness difference.

[0007] The utility model adopts the following technical scheme: a frame circle suitable for reinforcing cage, which comprises:

[0008] The inner circle is a closed circular structure.

[0009] The outer circle is fixedly installed on the outer side of the inner circle, and a plurality of grooves are formed in the outer circle to divide the outer circle into a plurality of circular arc segments distributed at intervals, the non-prestressed reinforcement is placed in the groove, and the prestressed reinforcement is placed on the outer side of the circular arc segment; the outer contour circle of the non-prestressed reinforcement and the outer contour circle of the prestressed reinforcement are concentric circles with equal radii, so that the protective layer thicknesses of the two are consistent.

[0010] Further, each circular arc segment is welded and fixed on the outer side of the inner circle.

[0011] Further, both ends of each circular arc segment are welded and connected to the outer side of the inner circle.

[0012] Further, a plurality of grooves are uniformly distributed along the circumferential direction of the inner circle, and the size of the groove is set according to the size of the non-prestressed reinforcement.

[0013] Further, the width of the groove along the circumferential direction is greater than the outer diameter of the non-prestressed reinforcement by 1mm-5mm.

[0014] Further, the inner circle and the outer circle are integrally formed plastic structures.

[0015] Further, the frame circle is made by injection molding process.

[0016] Further, the inner circle and the outer circle are both round steel.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The utility model discloses a frame circle suitable for reinforcing cage, adopts the unique inner ring and outer ring design, ensures that the non-prestressed reinforcement and the prestressed reinforcement protective layer thickness is identical, avoids the corrosion of uneven steel bar because of the thickness difference, under the natural environment erosion, the uniform protective layer can effectively reduce the steel bar oxidation, corrosion risk, prolongs the service life of reinforcing cage and concrete structure, strengthens the durability. Meanwhile, the uniform protective layer thickness makes the prestressed reinforcement and non-prestressed reinforcement can be uniformly stressed. The prestressed reinforcement offsets the tension, improves the crack resistance, and the non-prestressed reinforcement cooperates to bear tension and pressure, the both cooperate, enhance the overall stability of reinforcing cage, give full play to the mechanical properties, satisfy the strength demand of electric pole.

[0019] Secondly, the frame circle adapts to the reinforcing cage of mixed reinforcement, can adapt to different specifications prestressed reinforcement and non-prestressed reinforcement, improves the versatility. When constructing, the worker can complete the preliminary positioning by placing the reinforcing bar into the corresponding position, and in cooperation with the design calculation, the reinforcing cage suitable for different models of partially prestressed concrete electric pole can be made, reduces the design change, improves the construction efficiency and reduces the cost.

[0020] In addition, the frame circle is composed of the inner ring and the outer ring, and the structure is simple and has no complex parts. The inner ring supports, and the outer ring positions the reinforcing bar through the groove and the circular segment. The frame circle does not need special equipment and complex process for manufacturing and installation, and the construction personnel can easily master the operation method, thereby improving the construction convenience.

[0021] The second object of the utility model is to provide a reinforcing cage, which comprises the frame circle suitable for the reinforcing cage.

[0022] The third object of the utility model is to provide an electric pole, which comprises the reinforcing cage. DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1 It is the frame circle structure schematic view suitable for reinforcing cage of the embodiment of the utility model,

[0025] Figure 2 It is the frame circle structure schematic view suitable for reinforcing cage of the embodiment of the utility model after outer winding spiral rib,

[0026] Figure 3 It is Figure 2 Front view,

[0027] Wherein: inner ring 1; outer ring 2; groove 3; circular arc segment 4; non-prestressed tendon 5; prestressed tendon 6; spiral tendon 7. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the utility model.

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the utility model. Figure 1 To the drawings Figure 3 And specific embodiments, the utility model is discussed in detail:

[0030] As Figures 1-3 The utility model provides a kind of erecting ring suitable for reinforcement cage, it includes:

[0031] Inner ring 1, the inner ring 1 is closed circular structure, as basic support structure, maintains the shape of entire erecting ring, provides stable positioning reference for outer ring 2 and subsequent reinforcement installation;

[0032] Outer ring 2, the outer ring 2 is fixedly installed on the outer side of the inner ring 1, and several grooves 3 are opened on the outer ring 2, to make the outer ring 2 be divided into several interval distribution circular arc segments 4, non-prestressed tendon 5 is placed in the groove 3, prestressed tendon 6 is placed on the outer side of the circular arc segment 4, so that prestressed tendon 6 and non-prestressed tendon 5 form height difference;The outer contour circle of the non-prestressed tendon 5 and the outer contour circle of the prestressed tendon 6 are concentric circles, and radius is equal, to ensure that the thickness of the protective layer of both is consistent, that is, it can guarantee that the distance of prestressed tendon and non-prestressed tendon to the outer surface of concrete is same.

[0033] The erecting ring suitable for reinforcement cage in the utility model adopts the design of unique inner ring 1 and outer ring 2, to ensure that the thickness of the protective layer of non-prestressed tendon 5 and prestressed tendon 6 is consistent, to avoid uneven corrosion of reinforcement due to thickness difference. Under the erosion of natural environment, uniform protective layer can effectively reduce the risk of reinforcement oxidation and corrosion, prolong the service life of reinforcement cage and concrete structure, and enhance durability. At the same time, the uniform thickness of the protective layer makes prestressed tendon 6 and non-prestressed tendon 5 can bear stress evenly. Prestressed tendon 6 offsets tension, improves crack resistance;Non-prestressed tendon 5 cooperates with tension and pressure, and the two work together to enhance the overall stability of reinforcement cage, fully exert the mechanical properties, and meet the strength requirement of electric pole.

[0034] Secondly, the frame can adapt to the mixed reinforcement cage, which can adapt to different specifications of prestressed reinforcement 6 and non-prestressed reinforcement 5, and improve the versatility. During construction, workers can place the reinforcement in the corresponding position to complete the preliminary positioning. In combination with the design calculation, the reinforcement cage suitable for different types of partially prestressed concrete pole can be made, the design change is reduced, the construction efficiency is improved, and the cost is reduced.

[0035] In addition, the frame is composed of an inner ring 1 and an outer ring 2, which has a simple structure and no complex parts. The inner ring 1 supports, and the outer ring 2 positions the reinforcement through the groove 3 and the circular arc segment 4. The frame does not require special equipment and complex process for manufacturing and installation, and the construction personnel can easily master the operation method, thereby improving the construction convenience.

[0036] Further, each of the circular arc segments 4 is welded and fixed to the outer side of the inner ring 1. The welding operation is relatively simple, which is convenient for the construction personnel to accurately perform, and is conducive to ensuring the stability of the welding quality. Stable welding quality can reduce quality problems caused by loose connection, ensure the smooth progress of the reinforcement cage manufacturing and subsequent construction, improve the construction efficiency, and reduce the construction cost.

[0037] In the embodiment, the two ends of each of the circular arc segments 4 are welded and connected to the outer side of the inner ring 1. Welding the two ends of the circular arc segment 4 to the outer side of the inner ring 1 makes the outer ring 2 closely connected to the inner ring 1 through the circular arc segment 4, forming a stable overall structure. During the construction process such as concrete pouring, the parts can be effectively prevented from shifting, the position of the frame in the reinforcement cage is ensured to be accurate, the positioning accuracy of the prestressed reinforcement 6 and the non-prestressed reinforcement 5 is ensured, and thus the stability and reliability of the overall reinforcement cage are improved.

[0038] Further, the grooves 3 are uniformly distributed along the circumferential direction of the inner ring 1, and the size of the groove 3 is set according to the size of the non-prestressed reinforcement 5. In actual application, the specific number of grooves 3 can be reasonably determined by the person skilled in the art according to the number of non-prestressed reinforcements 5 to be placed as needed. The uniformly distributed grooves 3 can provide accurate and regular positioning for the non-prestressed reinforcement 5. Regardless of the number of non-prestressed reinforcements 5, they can be arranged at uniform intervals to ensure uniform layout in the reinforcement cage, make the reinforcement force more uniform, avoid affecting the overall performance of the reinforcement cage due to local stress concentration, and improve the structural stability. At the same time, the uniform distribution of the grooves 3 makes the frame have good symmetry. The symmetric structure tends to be consistent in stress performance in each direction when bearing external force, thereby improving the stability and carrying capacity of the overall frame and reinforcement cage, and enabling them to better cope with complex stress conditions.

[0039] Further, the width of the groove 3 along the circumferential direction is greater than the outer diameter of the non-prestressed reinforcement 5 by about 1mm-5mm, which facilitates the placement of the non-prestressed reinforcement 5.

[0040] Further, the inner ring 1 and the outer ring 2 can be made of plastic material, and the two are integrally formed. In the construction environment, various chemicals in the concrete and moisture, oxygen and the like in the external environment can easily corrode the metal material of the standing ring. The plastic material has good chemical stability and can resist the corrosion of these chemicals to avoid rust and corrosion, thereby ensuring the structural stability and durability of the standing ring in the reinforcement cage. Especially for some buildings in humid, saline and other harsh environments, such as seaside buildings, sewage treatment plants and the like, the anti-corrosion performance of the plastic standing ring is more prominent, which can effectively prolong the service life of the reinforcement cage and even the entire building structure.

[0041] At the same time, the density of the plastic material is usually much smaller than that of the metal, so that the mass of the plastic standing ring is relatively light. In the process of manufacturing, transporting and installing the reinforcement cage, it is easier to carry and operate, reduces the labor intensity of the construction personnel, and improves the construction efficiency.

[0042] In addition, the steel in the concrete is prone to electrochemical corrosion due to potential difference, and the plastic standing ring has good insulation and can isolate the steel from the outside environment to reduce the corrosion risk and protect the performance and structural safety of the steel. In buildings with electrical insulation requirements, such as power facilities and electronic equipment rooms, current leakage can be prevented to avoid electrical accidents.

[0043] Specifically, in the present embodiment, the plastic standing ring is made by injection molding process, which has simple production process, short cycle and can meet the large-scale engineering demand to speed up the engineering progress.

[0044] Further, the inner ring 1 and the outer ring 2 are both round steel. The round steel has high strength and good toughness, can withstand large external force, has excellent supporting capacity of the inner ring 1 and the outer ring 2, ensures the structural stability, can resist pressure, tension and the like, has strong fatigue resistance, prolongs the service life of the structure. At the same time, it has a regular shape and a smooth surface, and the cutting, bending and welding operations are easy, which is beneficial to accurate processing according to the design, improves the production efficiency, and guarantees the dimensional accuracy and surface quality of the parts.

[0045] The utility model discloses a standing ring suitable for reinforcement cage on the basis of the above, still provide a kind of reinforcement cage, it includes the standing ring suitable for reinforcement cage described above, such as can be wound spiral rib 7 outside the standing ring.The reinforcement cage of the utility model includes all the technical solutions of the standing ring suitable for reinforcement cage described above, at least has all the advantages of the standing ring suitable for reinforcement cage described above, no longer here.

[0046] The utility model discloses on the basis of above -mentioned reinforcement cage still provided a kind of electric pole, it includes above -mentioned reinforcement cage.The utility model this electric pole includes the whole technical scheme of above -mentioned reinforcement cage, i.e.

[0047] The above-described embodiments are further described with the aid of specific examples, but it should be understood that the specific descriptions are not to be construed as limiting the scope of the utility model, and various modifications made by those skilled in the art after reading the specification are within the scope of the utility model.

Claims

1. A setting ring suitable for use with a reinforcement cage, characterised in that: It comprises: An inner ring, which is a closed circular structure; An outer ring, which is fixedly installed outside the inner ring and has a plurality of grooves formed thereon to divide the outer ring into a plurality of circular arc segments distributed at intervals, the non-prestressed steel bars are placed in the grooves, and the prestressed steel bars are placed outside the circular arc segments; the outer contour circle of the non-prestressed steel bars and the outer contour circle of the prestressed steel bars are concentric circles with equal radii.

2. The erecting ring suitable for a reinforcement cage according to claim 1, characterized in that: Each of the circular arc segments is welded and fixed outside the inner ring.

3. The erecting ring suitable for a reinforcement cage according to claim 2, characterized in that: Both ends of each of the circular arc segments are welded and connected with the outer side of the inner ring.

4. The erecting ring suitable for a reinforcement cage according to claim 1, characterized in that: The plurality of grooves are uniformly distributed along the circumferential direction of the inner ring.

5. The erecting ring suitable for a reinforcement cage according to claim 1, characterized in that: The width of the groove along the circumferential direction is greater than the outer diameter of the non-prestressed steel bar by 1mm-5mm.

6. The erecting ring suitable for a reinforcement cage according to claim 1, characterized in that: The inner ring and the outer ring are integrally formed plastic structures.

7. The erecting ring suitable for a reinforcement cage according to claim 6, characterized in that: The erecting ring is made by an injection molding process.

8. The erecting ring suitable for a reinforcement cage according to claim 1, characterized in that: The inner ring and the outer ring are both round steel.

9. A reinforcement cage characterised in that: The erecting ring suitable for a reinforcement cage according to any one of claims 1 to 8.

10. A pole, characterized by: The reinforcement cage according to claim 9.

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