阅读说明：本技术 一种用于混凝土柱预制件或混凝土梁预制件的成型钢筋及其生产方法 (Forming reinforcing steel bar for concrete column prefabricated member or concrete beam prefabricated member and production method thereof ) 是由 李胜强 于 2021-08-09 设计创作，主要内容包括：本发明公开了一种用于混凝土柱预制件或混凝土梁预制件的成型钢筋及其生产方法,属于装配式建筑技术领域。所述成型钢筋包括埋设于混凝土预制件主体中的纵向钢筋及螺旋筋；所述纵向钢筋,其沿混凝土预制件主体长度方向布置；所述螺旋筋,其围绕所述纵向钢筋外侧螺旋状设置,用于箍住所述纵向钢筋的整体；本发明还公开了混凝土预制件横截面为“L”形或“T”形或“十”形时以及混凝土预制件配筋属于“笼中笼”情况时的成型钢筋。本发明同时还公布了所述成型钢筋的生产方法。本发明的成型钢筋在工厂可方便实现自动化生产,从而大幅提高构件预制的生产效率、降低生产成本。(The invention discloses a forming steel bar for a concrete column prefabricated member or a concrete beam prefabricated member and a production method thereof, belonging to the technical field of fabricated buildings. The formed steel bars comprise longitudinal steel bars and spiral steel bars which are embedded in the concrete prefabricated part main body; the longitudinal steel bars are arranged along the length direction of the concrete prefabricated part main body; the spiral rib is spirally arranged around the outer side of the longitudinal steel bar and is used for hooping the whole longitudinal steel bar; the invention also discloses a formed steel bar when the cross section of the concrete prefabricated part is L-shaped or T-shaped or cross-shaped and the reinforcement of the concrete prefabricated part belongs to the cage-in-cage condition. The invention also discloses a production method of the formed steel bar. The formed steel bar can be conveniently and automatically produced in a factory, so that the production efficiency of prefabricated components is greatly improved, and the production cost is reduced.)

1. A forming steel bar for a concrete column prefabricated part or a concrete beam prefabricated part is characterized by comprising a longitudinal steel bar and a spiral steel bar which are embedded in a main body of the concrete column prefabricated part or the concrete beam prefabricated part;

the arrangement direction of the longitudinal steel bar is parallel to the length direction of the precast concrete column or precast concrete beam main body;

the spiral ribs are spirally arranged around the outer side of the longitudinal steel bar at preset intervals and are used for hooping the whole longitudinal steel bar; the longitudinal reinforcing steel bars and the spiral reinforcing steel bars finally form a long-strip cage-shaped reinforcing cage.

2. The profiled reinforcement for a concrete column preform or a concrete beam preform as claimed in claim 1, wherein the helical reinforcement is one or a combination of more than one of steel reinforcement, steel strand, flat steel, sheet steel, carbon fibre.

3. The profiled reinforcement for a concrete column preform or a concrete beam preform as claimed in claim 1, wherein the longitudinal reinforcement comprises a first set of longitudinal reinforcements and a second set of longitudinal reinforcements; the spiral ribs comprise a first group of spiral ribs and a second group of spiral ribs;

the first group of spiral ribs are spirally arranged around the outer side of the first group of longitudinal steel bars and are used for hooping the whole first group of longitudinal steel bars; the second group of spiral ribs are spirally arranged around the outer side of the second group of longitudinal steel bars and are used for hooping the whole second group of longitudinal steel bars;

the first group of longitudinal steel bars and the first group of spiral bars form a first steel bar cage, and the second group of longitudinal steel bars and the second group of spiral bars form a second steel bar cage; the first reinforcement cage and the second reinforcement cage are combined to form the reinforcement cage with the cross section view showing an L shape, a T shape or a cross shape.

4. The profiled reinforcement for a concrete column preform or a concrete beam preform as claimed in claim 3, wherein the longitudinal reinforcement further comprises a zeroth set of longitudinal reinforcements, the first set of helical reinforcements hooping the first set of longitudinal reinforcements while also hooping the zeroth set of longitudinal reinforcements; and the second group of spiral reinforcements hoops the second group of longitudinal reinforcements and hoops the zeroth group of longitudinal reinforcements.

5. A profiled reinforcement for a precast concrete column or beam according to claims 1 to 4, comprising a reinforcement cage according to claims 1 to 4, a third set of longitudinal reinforcements and a third set of helical reinforcements;

the third group of longitudinal steel bars is located outside the steel reinforcement cage, and the third group of spiral bars surrounds the third group of longitudinal steel bars and the outer side of the steel reinforcement cage in a spiral shape and is used for hooping the third group of longitudinal steel bars and the whole steel reinforcement cage.

6. The profiled bar for concrete column or beam pre-forms as claimed in claims 1 to 5, wherein the longitudinal bars and the helical bars are connected at their intersection points.

7. A method of producing a profiled reinforcing bar as claimed in claim 1, including the steps of:

step 1: fixing the longitudinal steel bars according to the spatial position relationship and the space between the longitudinal steel bars;

step 2: starting from the preset position of one end of the longitudinal steel bar, the spiral steel bar is spirally and integrally wound on the outer side of the longitudinal steel bar at a preset interval until the other end of the longitudinal steel bar is in the preset position.

8. A method of producing a profiled reinforcing bar as claimed in claim 3, including the steps of:

step 1: temporarily fixing the first group of longitudinal steel bars and the second group of longitudinal steel bars according to the spatial position relationship and the space between the first group of longitudinal steel bars and the second group of longitudinal steel bars; wherein the first set of longitudinal rebars is positioned relative to the second set of longitudinal rebars with a helical spacing projecting forward in the length direction;

step 2: spirally winding the whole of the first group of longitudinal steel bars along the outer side of the first group of longitudinal steel bars by using the first group of spiral steel bars according to a preset interval, and winding for a circle;

and step 3: the first group of longitudinal steel bars moves back by a spiral bar spacing, and the second group of longitudinal steel bars moves forward by a spiral bar spacing;

and 4, step 4: using the second group of spiral bars to spirally wind the outside of the second group of longitudinal bars at a preset interval, wherein the second group of spiral bars are wound for a circle:

and 5: the first group of longitudinal steel bars moves forwards by two spiral bar intervals, so that the first group of longitudinal steel bars protrudes forwards by one spiral bar interval relative to the second group of longitudinal steel bars along the length direction;

step 6: repeating the step 2 to the step 5 until the first group of spiral ribs and the second group of spiral ribs are wound to a preset position;

and 7: the first set of longitudinal rebars is moved forward or backward so that the first and second sets of longitudinal rebars are aligned lengthwise.

9. A method of producing a profiled reinforcing bar as claimed in claim 4, including the steps of:

step 1: respectively and temporarily fixing the zeroth group of longitudinal steel bars, the first group of longitudinal steel bars and the second group of longitudinal steel bars according to the spatial position relationship and the space among the zeroth group of longitudinal steel bars, the first group of longitudinal steel bars and the second group of longitudinal steel bars; the positions of the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars are opposite to the positions of the second group of longitudinal steel bars, and a spiral bar interval is protruded forwards along the length direction;

step 2: spirally winding the whole of the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars along the outer sides of the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars by using the first group of spiral bars according to a preset interval, and winding for a circle;

and step 3: the first group of longitudinal steel bars moves back by a spiral bar spacing, and the second group of longitudinal steel bars moves forward by a spiral bar spacing;

and 4, step 4: spirally winding the whole of the zero group of longitudinal steel bars and the second group of longitudinal steel bars along the outer sides of the zero group of longitudinal steel bars and the second group of longitudinal steel bars by using the second group of spiral bars according to a preset interval, and winding for a circle;

and 5: the zero group of longitudinal steel bars move forwards by a spiral bar spacing, and the first group of longitudinal steel bars move forwards by two spiral bar spacings, so that the positions of the zero group of longitudinal steel bars and the first group of longitudinal steel bars are opposite to the positions of the second group of longitudinal steel bars, and the spiral bar spacing protrudes forwards along the length direction;

step 6: repeating the step 2 to the step 5 until the first group of spiral ribs and the second group of spiral ribs are wound to a preset position;

and 7: and the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars move forwards or backwards to be flush with the second group of longitudinal steel bars along the length direction.

10. A method of producing a profiled reinforcing bar as claimed in claim 5, including the steps of:

step 1: respectively fixing the reinforcement cage and the third group of longitudinal reinforcements according to the spatial position relationship and the space between the reinforcement cage and the third group of longitudinal reinforcements;

step 2: and starting from the preset position of one end of the third group of longitudinal steel bars, using the third group of spiral bars to be arranged along the third group of longitudinal steel bars and the outer side of the steel reinforcement cage in a spiral winding manner, wherein the third group of spiral bars are arranged at preset intervals, and the third group of spiral bars are wound on the third group of longitudinal steel bars and the whole body of the steel reinforcement cage in a spiral winding manner until the preset position of the other end of the third group of longitudinal steel bars is arranged.

11. The method for producing the shaped reinforcing bar according to claim 7 to 10, wherein the steps further comprise: and connecting the longitudinal steel bar and the spiral rib at the intersection point of the longitudinal steel bar and the spiral rib.

Technical Field

The invention belongs to the technical field of fabricated buildings, and particularly relates to a forming steel bar for a concrete column prefabricated member or a concrete beam prefabricated member and a production method thereof.

Background

At present, the development of the fabricated building is greatly promoted in China, and factories for producing fabricated components are invested in various places. However, most of the production of fabricated concrete members in factories is mainly performed by manual work. Taking a concrete column prefabricated member or a concrete beam prefabricated member as an example, the processing and installation of the steel bars are still manual operation basically, the industrial production degree is very low, the labor cost is very high, the production cost of the fabricated concrete member is high, the cost of the concrete fabricated building is higher than that of a cast-in-place building, and the development of the concrete fabricated building is seriously hindered.

To take advantage of the prefabricated building, the industrialization level of the production of the prefabricated components must be significantly improved to reduce the cost of the prefabricated components.

Disclosure of Invention

In order to improve the industrialization level of the production of the precast concrete column or the precast concrete beam and reduce the production cost of the precast concrete column or the precast concrete beam, the invention provides a forming steel bar for the precast concrete column or the precast concrete beam, aiming at realizing the automation of the production of the steel bar of the precast concrete column or the precast concrete beam; the invention also aims to provide a production method of the formed steel bar.

In order to solve the problems, the invention is realized according to the following technical scheme:

in a first aspect, the present invention provides a formed steel bar for a concrete column prefabricated member or a concrete beam prefabricated member, comprising a longitudinal steel bar and a spiral bar embedded in a body of the concrete column prefabricated member or the concrete beam prefabricated member;

the arrangement direction of the longitudinal steel bar is parallel to the length direction of the precast concrete column or precast concrete beam main body;

the spiral ribs are spirally arranged around the outer side of the longitudinal steel bar at preset intervals and are used for hooping the whole longitudinal steel bar; the longitudinal reinforcing steel bars and the spiral reinforcing steel bars finally form a long-strip cage-shaped reinforcing cage.

The spiral rib is one or a combination of more than one of a steel bar, a steel strand, a flat steel, a thin steel plate and a carbon fiber.

Further, for the forming steel bars of the concrete column prefabricated member or the concrete beam prefabricated member with the cross section in the L shape, the T shape or the cross shape, the longitudinal steel bars comprise a first group of longitudinal steel bars and a second group of longitudinal steel bars; the spiral ribs comprise a first group of spiral ribs and a second group of spiral ribs;

the first group of spiral ribs are spirally arranged around the outer side of the first group of longitudinal steel bars and are used for hooping the whole first group of longitudinal steel bars; the second group of spiral ribs are spirally arranged around the outer side of the second group of longitudinal steel bars and are used for hooping the whole second group of longitudinal steel bars;

the first group of longitudinal steel bars and the first group of spiral bars form a first steel bar cage, and the second group of longitudinal steel bars and the second group of spiral bars form a second steel bar cage; the first reinforcement cage and the second reinforcement cage are combined to form the reinforcement cage with the cross section view showing an L shape, a T shape or a cross shape.

It should be noted that the present invention is not limited to the order of the "first group" and the "second group" regardless of the longitudinal bars or the helical bars, and the "first" and the "second" are only used to distinguish the longitudinal bars and the helical bars of the two groups.

Furthermore, the longitudinal steel bars also comprise a zeroth group of longitudinal steel bars, and the zeroth group of longitudinal steel bars are hooped while the first group of spiral steel bars are hooped; and the second group of spiral reinforcements hoops the second group of longitudinal reinforcements and hoops the zeroth group of longitudinal reinforcements.

It should be noted that the present invention does not limit the sequence order between the "zeroth group" and the "first group" and the "second group", and the "zeroth group" is only used for distinguishing from the "first group" and the "second group". The zeroth set of longitudinal rebars is hooped by both the first set of helical bars and the second set of helical bars.

Further, for the condition that the reinforcement of the concrete column prefabricated member or the concrete beam prefabricated member has a cage-in-cage, the formed reinforcement comprises the reinforcement cage (the finished reinforcement cage is used as an inner reinforcement cage), a third group of longitudinal reinforcements and a third group of spiral reinforcements;

the third group of longitudinal steel bars is located outside the steel reinforcement cage, and the third group of spiral bars surrounds the third group of longitudinal steel bars and the outer side of the steel reinforcement cage in a spiral shape and is used for hooping the third group of longitudinal steel bars and the whole steel reinforcement cage.

It should be noted that the present invention does not limit the sequence of the "third group" from the "first group" and the "second group" described above, regardless of the longitudinal bars or the helical bars, and the "third group" is only used to illustrate that the "third group" is different from the "first group" and the "second group".

Furthermore, the intersection points of the longitudinal steel bars and the spiral bars are connected with each other.

In a second aspect, the present invention also provides a method for producing the shaped reinforcing bar, the method comprising the steps of:

step 1: fixing the longitudinal steel bars according to the spatial position relationship and the space between the longitudinal steel bars;

step 2: starting from the preset position of one end of the longitudinal steel bar, the spiral steel bar is spirally and integrally wound on the outer side of the longitudinal steel bar at a preset interval until the other end of the longitudinal steel bar is in the preset position.

Further, for the forming reinforcing steel bar of the concrete column prefabricated member or the concrete beam prefabricated member with the cross section in the L shape or the T shape or the ten shape, the production method comprises the following steps:

step 1: temporarily fixing the first group of longitudinal steel bars and the second group of longitudinal steel bars according to the spatial position relationship and the space between the first group of longitudinal steel bars and the second group of longitudinal steel bars; wherein the first set of longitudinal rebars is positioned relative to the second set of longitudinal rebars with a helical spacing projecting forward in the length direction;

step 2: spirally winding the whole of the first group of longitudinal steel bars along the outer side of the first group of longitudinal steel bars by using the first group of spiral steel bars according to a preset interval, and winding for a circle;

and step 3: the first group of longitudinal steel bars moves back by a spiral bar spacing, and the second group of longitudinal steel bars moves forward by a spiral bar spacing;

and 4, step 4: spirally winding the whole second group of longitudinal steel bars along the outer side of the second group of longitudinal steel bars by using the second group of spiral steel bars according to a preset interval, and winding for a circle;

and 5: the first group of longitudinal steel bars moves forwards by two spiral bar intervals, so that the first group of longitudinal steel bars protrudes forwards by one spiral bar interval relative to the second group of longitudinal steel bars along the length direction;

step 6: repeating the step 2 to the step 5 until the first group of spiral ribs and the second group of spiral ribs are wound to a preset position;

and 7: the first set of longitudinal rebars is moved forward or backward so that the first and second sets of longitudinal rebars are aligned lengthwise.

Furthermore, the longitudinal steel bars in the prefabricated member are "simultaneously hooped by the first group of spiral bars and the second group of spiral bars", and the part of the longitudinal steel bars is called as a "zeroth group of longitudinal steel bars". The production method of the formed steel bar comprises the following steps:

step 1: respectively and temporarily fixing the zeroth group of longitudinal steel bars, the first group of longitudinal steel bars and the second group of longitudinal steel bars according to the spatial position relationship and the space among the zeroth group of longitudinal steel bars, the first group of longitudinal steel bars and the second group of longitudinal steel bars; the positions of the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars are opposite to the positions of the second group of longitudinal steel bars, and a spiral bar interval is protruded forwards along the length direction;

step 2: spirally winding the whole of the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars along the outer sides of the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars by using the first group of spiral bars according to a preset interval, and winding for a circle;

and step 3: the first group of longitudinal steel bars moves back by a spiral bar spacing, and the second group of longitudinal steel bars moves forward by a spiral bar spacing;

and 4, step 4: spirally winding the whole of the zero group of longitudinal steel bars and the second group of longitudinal steel bars along the outer sides of the zero group of longitudinal steel bars and the second group of longitudinal steel bars by using the second group of spiral bars according to a preset interval, and winding for a circle;

and 5: the zero group of longitudinal steel bars move forwards by a spiral bar spacing, and the first group of longitudinal steel bars move forwards by two spiral bar spacings, so that the positions of the zero group of longitudinal steel bars and the first group of longitudinal steel bars are opposite to the positions of the second group of longitudinal steel bars, and the spiral bar spacing protrudes forwards along the length direction;

step 6: repeating the step 2 to the step 5 until the first group of spiral ribs and the second group of spiral ribs are wound to a preset position;

and 7: and the zeroth group of longitudinal steel bars and the first group of longitudinal steel bars move forwards or backwards to be flush with the second group of longitudinal steel bars along the length direction.

Further, for the condition that the reinforcement of the concrete column prefabricated member or the concrete beam prefabricated member has a cage-in-cage, the production method of the formed reinforcement comprises the following steps:

step 1: respectively fixing the reinforcement cage and the third group of longitudinal reinforcements according to the spatial position relationship and the space between the reinforcement cage (inner reinforcement cage) and the third group of longitudinal reinforcements;

step 2: starting from the preset position of the one end of the third group of longitudinal steel bars, using the third group of spiral bars to be arranged along the third group of longitudinal steel bars and the outer side of the steel reinforcement cage are spirally wound on the third group of longitudinal steel bars and the whole steel reinforcement cage until the preset position of the other end of the third group of longitudinal steel bars.

Further, the method for producing the shaped steel bar further comprises the following steps: and connecting the longitudinal steel bar and the spiral rib at the intersection point of the longitudinal steel bar and the spiral rib.

Compared with the prior art, the invention has the beneficial effects that: the method can conveniently realize automatic production according to the method of the invention, thereby greatly improving the production efficiency, reducing the production cost, further exerting the advantages of the fabricated building and promoting the development of the fabricated building.

Drawings

Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a side view of the shaped reinforcing bars of a rectangular concrete column preform or a concrete beam preform of example 1;

FIG. 2 is a cross-sectional view of a shaped reinforcing bar of a rectangular concrete column preform or a concrete beam preform in example 1;

FIG. 3 is a cross-sectional view of the shaped reinforcing bars of the "L" -shaped concrete column preform or the "L" -shaped concrete beam preform of example 2;

FIG. 4 is a cross-sectional view of the shaped reinforcing bars of the "T" shaped concrete column preform or the "T" shaped concrete beam preform of example 2;

FIG. 5 is a cross-sectional view of the reinforcing bars of the prefabricated member of the cross-shaped concrete column or the prefabricated member of the cross-shaped concrete beam in example 2;

FIG. 6 is a cross-sectional view of the shaped reinforcing bars of the concrete column preform or the concrete beam preform of example 3;

FIG. 7 is a cross-sectional view of another shaped reinforcing bar of the concrete column preform or the concrete beam preform of example 3;

FIG. 8 is a flowchart showing a method of producing the shaped reinforcing bar according to example 4;

FIG. 9 is a flowchart showing a method of producing the shaped reinforcing bar according to example 5;

fig. 10 is a flowchart of a method of manufacturing the shaped reinforcing bar according to embodiment 6.

Description of the labeling:

1: longitudinal reinforcing steel bars; 10: a zeroth set of longitudinal rebars; 11: a first set of longitudinal rebars; 12: a second set of longitudinal rebars; 13: a third set of longitudinal rebars;

2: spiral reinforcing steel bars; 21: a first set of helical reinforcement bars; 22: a second set of helical reinforcement bars; 23: a third set of helical reinforcement;

a: a reinforcement cage; a. the_n: an inner reinforcement cage.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

It should be noted that: the dimension of the concrete column or the concrete beam is characterized in that the dimension in one direction is larger, and the dimensions in the other two directions are smaller. The length direction is the direction with larger size, and the longitudinal direction is the direction parallel to the length direction; the forward direction refers to a direction moving to one end along the length direction; the "backward" refers to a direction opposite to the "forward". In particular implementations, once the "forward" direction is determined, the direction remains unchanged during implementation.

Example 1

The embodiment discloses a shaping reinforcing bar for a concrete column prefabricated member or a concrete beam prefabricated member, and refers to figures 1-2. Comprises a longitudinal steel bar 1 and a spiral steel bar 2 which are buried in the body of a concrete column prefabricated member or a concrete beam prefabricated member.

The longitudinal steel bar 1 is arranged in a direction parallel to the length direction of the concrete column prefabricated part or the concrete beam prefabricated part main body;

the spiral ribs 2 are spirally arranged around the outer side of the longitudinal steel bar 1 according to preset intervals and are used for hooping the whole longitudinal steel bar 1; the longitudinal steel bars 1 and the spiral steel bars 2 finally form a long strip cage-shaped steel bar cage A.

It should be noted that the spiral rib 2 may be one or a combination of more than one of a steel bar, a steel strand, a flat steel, a thin steel plate, and a carbon fiber. The spiral reinforcement 2 of the present embodiment is made of steel.

The intersection point positions of the longitudinal steel bars 1 and the spiral steel bars 2 are connected in a spot welding mode.

It should be noted that the present invention is not limited to the connection manner of the intersection point positions of the longitudinal reinforcements and the spiral reinforcements, and the spot welding connection is preferable in this embodiment.

Example 2

The embodiment discloses a forming steel bar of a concrete column prefabricated member or a concrete beam prefabricated member with an L-shaped or T-shaped or cross-shaped cross section, and the forming steel bar refers to fig. 3-5.

The longitudinal steel bars 1 comprise a first group of longitudinal steel bars 11 and a second group of longitudinal steel bars 12; the spiral ribs 2 comprise a first group of spiral ribs 21 and a second group of spiral ribs 22;

the first group of spiral ribs 21 are spirally arranged around the outer side of the first group of longitudinal steel bars 11 and are used for hooping the whole first group of longitudinal steel bars 11; the second set of helical ribs 22 are helically disposed around the outside of the second set of longitudinal bars 12 for hooping the entirety of the second set of longitudinal bars 12.

In the formed steel bar of this embodiment, the longitudinal steel bar 1 further includes a zeroth set of longitudinal steel bars 10, and the zeroth set of longitudinal steel bars 10 are simultaneously hooped by the first set of spiral ribs 21 and the second set of spiral ribs 22.

The zeroth group of longitudinal steel bars 10, the first group of longitudinal steel bars 11 and the first group of spiral bars 21 form a first steel bar cage, and the zeroth group of longitudinal steel bars 10, the second group of longitudinal steel bars 12 and the second group of spiral bars 22 form a second steel bar cage; the first reinforcement cage and the reinforcement cage are combined to form a reinforcement cage A with an L-shaped or T-shaped or cross-shaped cross section.

The intersection point positions of the longitudinal steel bars 1 and the spiral steel bars 2 are connected in a spot welding mode.

It should be noted that the present invention is not limited to the order of the "zeroth group", the "first group", and the "second group" regardless of the longitudinal bars or the helical bars, and the "zeroth", "first", and "second" are only used to distinguish the longitudinal bars or the helical bars of different groups. The zeroth group of longitudinal steel bars refers to the longitudinal steel bars which are simultaneously hooped by the first group of spiral bars and the second group of spiral bars.

Example 3

The embodiment discloses a shaped steel bar under the condition that a reinforcement of a concrete column prefabricated member or a concrete beam prefabricated member has a cage in a cage, and refers to fig. 6 to 7.

The formed steel bar comprises an inner steel bar cage A_n(the completed reinforcement cage, as the inner reinforcement cage), a third set of longitudinal reinforcements 13, and a third set of helical reinforcements 23;

the third group of longitudinal steel bars 13 is positioned in the inner reinforcement cage A_nThe third set of helical reinforcement 23 surrounds the third set of longitudinal reinforcement 13 and the inner reinforcement cage a_nIs arranged spirally for hooping a third group of longitudinal steel bars 13 and an inner steel reinforcement cage A_nThe whole of (a).

The intersection point positions of the longitudinal steel bars 1 and the spiral steel bars 2 are connected in a spot welding mode.

It should be noted that the present invention does not limit the sequence of the "third group" from the "first group" and the "second group" described above, regardless of the longitudinal bars or the helical bars, and the "third group" is only used to illustrate that the "third group" is different from the "first group" and the "second group".

Example 4

This example discloses the production method of example 1, with reference to fig. 8, comprising the following steps:

s11: fixing the longitudinal steel bars 1 according to the spatial position relationship and the space between the longitudinal steel bars 1;

s12: starting from the preset position of one end of the longitudinal steel bar 1, the spiral bar 2 is used for spirally and integrally winding the whole body of the longitudinal steel bar 1 along the outer side of the longitudinal steel bar 1 until the preset position of the other end of the longitudinal steel bar 1.

S13: the intersection point positions of the longitudinal steel bars 1 and the spiral steel bars 2 are connected in a spot welding mode.

It should be noted that the present invention is not limited to the connection manner of the intersection point positions of the longitudinal reinforcements and the spiral reinforcements, and the spot welding connection is preferable in this embodiment.

Example 5

This example discloses the production method of example 2, with reference to fig. 9, comprising the steps of:

s21: respectively and temporarily fixing the zeroth group of longitudinal steel bars 10, the first group of longitudinal steel bars 11 and the second group of longitudinal steel bars 12 according to the spatial position relationship and the space between the zeroth group of longitudinal steel bars 10, the first group of longitudinal steel bars 11 and the second group of longitudinal steel bars 12; wherein the position of the zeroth group of longitudinal steel bars 10 and the first group of longitudinal steel bars 11 is opposite to the second group of longitudinal steel bars 12, which protrudes forward by a spiral bar spacing along the length direction:

s22: spirally winding the whole of the zero group of longitudinal steel bars 10 and the first group of longitudinal steel bars 11 along the outer sides of the zero group of longitudinal steel bars 10 and the first group of longitudinal steel bars 11 by using the first group of spiral bars 21 according to a preset interval, and winding for a circle;

s23: the first group of longitudinal steel bars 11 move back by a spiral bar spacing, and the second group of longitudinal steel bars 12 move forward by a spiral bar spacing;

s24: spirally winding the whole of the zero group of longitudinal steel bars 10 and the second group of longitudinal steel bars 12 along the outer sides of the zero group of longitudinal steel bars 10 and the second group of longitudinal steel bars 12 by using a second group of spiral bars 22 according to a preset interval, and winding for a circle;

s25: the zero group of longitudinal steel bars 10 move forwards by a spiral bar spacing, and the first group of longitudinal steel bars 11 move forwards by two spiral bar spacings, so that the positions of the zero group of longitudinal steel bars 10 and the first group of longitudinal steel bars 11 are opposite to the positions of the second group of longitudinal steel bars 12, and the spiral bar spacing protrudes forwards along the length direction;

s26: repeating the steps S22 to S25 until the first group of spiral ribs 21 and the second group of spiral ribs 22 are wound to the preset position;

s27: the zeroth set of longitudinal bars 10 and the first set of longitudinal bars 11 are moved forward or backward so as to be flush with the second set of longitudinal bars 12 in the length direction.

S28: the intersection point positions of the longitudinal steel bars 1 and the spiral steel bars 2 are connected in a spot welding mode.

Example 6

This example discloses the production method of example 3, with reference to fig. 10, comprising the steps of:

s31: press the inner reinforcement cage A_nAnd the spatial position relation and the space of the third group of longitudinal steel bars 13 are respectively fixed with the inner steel bar cage A_nAnd a third set of longitudinal rebars 13;

s32: starting from a preset position at one end of the third set of longitudinal reinforcement bars 13, the third set of helical reinforcement bars 23 are used along the third set of longitudinal reinforcement bars 13 and the inner reinforcement cage a_nThe outer side is spirally wound with a third group of longitudinal steel bars 13 and an inner steel reinforcement cage A_nUp to a predetermined position at the other end of the third set of longitudinal bars 13.

S33: the intersection point positions of the longitudinal steel bars 1 and the spiral steel bars 2 are connected in a spot welding mode.

The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.