Reinforcement cage positioning device

Abstract

The utility model discloses a reinforcement cage positioning device and a positioning construction method, and relates to the technical field of civil engineering. The positioning device comprises a circular hoop and sleeving positioning pipes, the circular hoop is vertically provided with the multiple sleeving positioning pipes, and the multiple sleeving positioning pipes are connected with vertically-arranged steel bars of the reinforcement cage in a sleeving mode and abut against transversely-arranged steel bars of the reinforcement cage; the multiple outer abutting positioning pieces are arranged on the outer side of the circular hoop and / or arranged on the other side, opposite to the circular hoop, of the sleeving positioning pipe, and the multiple outer abutting positioning pieces abut against the inner wall of the steel casing; and the fastening rope is used for tensioning, connecting and sleeving the positioning pipe and the reinforcement cage. According to the reinforcement cage positioning device and the positioning construction method, the positioning device has the advantages of being simple in structure, convenient to operate, capable of being recycled and reused and low in manufacturing and using cost, and the construction method can greatly reduce the operation difficulty of adjusting and positioning a body of a reinforcement cage in a steel casing through the positioning device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil engineering, and particularly relates to a reinforcing cage positioning device. BACKGROUND

[0002] The cast-in-situ bored pile is a widely used civil engineering foundation form, the top end of which is connected with a structure such as a pile cap or a pier, and is located at a certain depth below the original ground or riverbed; after the pile foundation is formed, a reinforcing cage needs to be inserted into the hole and be centrally located in the pile hole and the top of the drilled steel casing.

[0003] However, since the diameter of the steel casing is 200mm to 400mm larger than the diameter of the pile foundation, and the reinforcing cage is designed and manufactured to be relatively long, when the reinforcing cage is inserted into the pile hole, the upper end thereof often deviates from the center of the steel casing due to deflection deformation, and the deviation of the reinforcing cage from the center of the steel casing is equivalent to the deviation from the center of the pile foundation, which will result in a low strength of the pile foundation and cause a safety hazard of the pile foundation.

[0004] To this end, the prior art discloses a pile foundation reinforcing cage lowering and rectifying positioning device, which comprises a support frame, a support column arranged on the support frame for supporting the reinforcing cage, a plurality of positioning support blocks arranged at intervals below the support column for abutting against the inner wall of the steel casing, a plurality of correction plates arranged at intervals below the positioning support blocks for abutting against the inner wall of the reinforcing cage, a calibration adjusting mechanism arranged between the support column and the support frame for abutting the plurality of positioning support blocks against the inner wall of the steel casing and the plurality of correction plates against the inner wall of the reinforcing cage so as to make the center of the steel casing coincide with the center of the reinforcing cage, and a self-locking hoisting mechanism arranged between the support column and the reinforcing cage for hoisting the reinforcing cage. The device has the effects of preventing the reinforcing cage from deviating after being lowered, improving the accuracy of the position of the reinforcing cage after being lowered, and improving the bearing capacity, stability and service life of the pile foundation.

[0005] However, the above device still has the following defects:

[0006] 1. The positioning device has a complex structure, requires a higher professional requirement for technical personnel, and thus results in a relatively high maintenance cost of the positioning device.

[0007] 2. When adjusting the position of the reinforcing cage in the pile hole and the steel casing, the reinforcing cage is hoisted by the self-locking hoisting mechanism, and the entire weight of the reinforcing cage is also borne by the support frame, which has too high requirements for the equipment of the self-locking hoisting mechanism and the strength of the support column.

[0008] 3. When the positioning device is used to correct the position of the reinforcing cage, the construction personnel need to hoist the already lowered reinforcing cage, which has a poor combination with the lowering operation of the reinforcing cage, and causes a serious waste of construction resources.

[0009] 4. When construction workers lift the steel cage using the self-locking hoisting mechanism, in order to ensure that the multiple hoisting ropes are evenly stressed, the entire support frame needs to be laid as flat as possible on the ground around the pile hole. The laying accuracy of the support frame is also required to be high. Summary of the Invention

[0010] The present invention provides a rebar cage positioning device. The positioning device has a simple structure, can be lowered and installed together with the rebar cage, and can be recycled after the rebar cage is installed, thereby solving at least one of the above-mentioned technical problems.

[0011] The technical solution of the present invention to solve the above problems is: to provide a rebar cage positioning device for positioning the rebar cage inside a steel casing, the positioning device comprising:

[0012] The circular hoop and the sleeve positioning tube are provided. The circular hoop is provided with multiple sleeve positioning tubes vertically. The multiple sleeve positioning tubes are movably connected to the vertically arranged steel bars of the steel cage. The multiple sleeve positioning tubes abut against the horizontally arranged steel bars of the steel cage.

[0013] The external abutment positioning member is provided in multiple forms, and the multiple external abutment positioning members are provided on the outside of the circular hoop and / or on the other side of the sleeve positioning tube opposite to the circular hoop. The multiple external abutment positioning members abut against the inner wall of the steel casing.

[0014] A fastening rope is used to tighten the connection between the sleeve positioning tube and the reinforcing cage.

[0015] Furthermore, multiple circular hoops are provided, and the multiple circular hoops are arranged vertically at equal intervals. Each of the sleeve positioning tubes is fixedly connected to the multiple circular hoops.

[0016] Furthermore, the socket positioning tube includes a reinforcing bar sleeve and an outer sleeve that are inserted and connected to each other. The reinforcing bar sleeve is fixedly installed on the circular hoop, and the outer sleeve extends upward beyond the steel casing.

[0017] Furthermore, a ring is fixedly provided at the upper end of the sleeve positioning tube, and one end of the fastening rope is tied to the ring.

[0018] Furthermore, a rope tensioner is fixedly installed at the upper end of the sleeve positioning tube, and the other end of the fastening rope passes around the steel bars of the steel cage and is fixedly connected to the fastening rope upward.

[0019] Furthermore, the fastening rope is also wrapped around the circular hoop.

[0020] Furthermore, along the vertically downward direction, the distance between the outer abutment positioning member and the circular hoop gradually decreases.

[0021] Further, the round hoop is a steel round hoop, the sleeved positioning pipe is a steel pipe, and the fastening rope is a steel wire rope.

[0022] The positioning device of the steel reinforcement cage has the following advantages:

[0023] 1. The positioning device is connected with the steel reinforcement cage through the sleeved positioning pipe and is connected with the steel casing through the plurality of external abutting positioning members, so that the body part of the steel reinforcement cage located in the steel casing is always kept in the center, thereby ensuring the quality of the pile foundation.

[0024] 2. The positioning device has the advantages of simple structure, convenient operation, recyclable and reusable, low manufacturing and using cost, etc. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application. In these drawings, like reference numerals are used to represent similar elements. The drawings in the following description are some embodiments of the present application, rather than all embodiments. For those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0026] Figure 1 is a structural diagram of the positioning device of the present embodiment;

[0027] 1 - round hoop, 2 - sleeved positioning pipe, 21 - steel sleeved pipe, 22 - externally sleeved pipe, 23 - ring body, 24 - rope tightener, 3 - external abutting positioning member, 4 - fastening rope;

[0028] 5 - steel reinforcement cage, 6 - steel casing, 7 - pile hole. DETAILED DESCRIPTION

[0029] In the present specification, the orientation terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the structure shown in the drawings, and the words "inner" and "outer" refer to the direction towards or away from the geometric center of a particular component. They are relative concepts, so they can change accordingly according to their different positions, different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0030] Please refer to Figure 1 , refer to Figure 1The reinforcing cage positioning device of the embodiment of the present application is used for positioning the reinforcing cage in the steel casing, and comprises a circular hoop 1, four sleeve positioning pipes 2, outer abutting positioning members 3 and fastening ropes 4. The circular hoop 1 is formed by welding the first and last reinforcing steels to be connected to each other to form a circular reinforcing steel ring, and the diameter of the circular hoop 1 is equal to the diameter of the reinforcing cage. The four sleeve positioning pipes 2 are welded to be arranged on the inner side of the circular hoop 1 in the front, rear, left and right directions, and the four sleeve positioning pipes 2 are all aligned with a vertically arranged reinforcing steel of the reinforcing cage. The outer abutting positioning members 3 are steel structures similar to the shape of the handle of a cup, and one outer abutting positioning member 3 is welded to each sleeve positioning pipe 2 and arranged in the radial direction of the circular hoop 1. The fastening ropes 4 are used for fastening the sleeve positioning pipes 2 and the reinforcing cage.

[0031] In addition, please refer to Figure 1 In the embodiment, the sum of the maximum distance from the outer abutting positioning member 3 to the circular hoop 1 and the radius of the circular hoop 1 is slightly less than or equal to the radius of the steel casing.

[0032] In this way, the construction personnel can align the sleeve positioning pipes 2 with the vertically arranged reinforcing steels of the reinforcing cage, position the positioning device at the upper end of the reinforcing cage, fasten the sleeve positioning pipes 2 and the reinforcing cage by using the fastening ropes 4, prevent the positioning device from being separated from the reinforcing cage during the process of being lowered together with the reinforcing cage, and make the positioning device continuously abut against the steel casing by the outer abutting positioning members 3 during the process of lowering the reinforcing cage, so that the circular hoop 1 can be centered in the steel casing, and the upper end of the reinforcing cage can also be centered in the steel casing with the circular hoop 1, thereby achieving the positioning of the upper end of the reinforcing cage extending into the steel casing.

[0033] It should be noted that in other embodiments, the number of sleeve positioning pipes 2 can be two, three, five or more, and the sleeve positioning pipes 2 do not need to be all sleeved with the vertically arranged reinforcing steels of the reinforcing cage as long as the positioning device can position the reinforcing cage.

[0034] In addition, in other embodiments, the outer abutting positioning members 3 can also be directly welded to the circular hoop 1.

[0035] Further, in order to prevent the positioning device itself from being deformed, two circular hoops 1 are arranged in the upper and lower directions in the embodiment, and the sleeve positioning pipes 2 are all welded to the two circular hoops 1, so that the structural strength of the positioning device as a whole is further improved.

[0036] Further, please refer to Figure 1In the embodiment, two rings 23 are welded to the upper end of the sleeving positioning pipe 2. One end of the fastening rope 4 is tied to one of the rings 23, and the other end of the fastening rope 4 extends downward, passes through the cage hole of the reinforcement cage, and then extends upward from the inside of the reinforcement cage to be tied to the other ring 23. At this time, the construction personnel can pull the fastening rope 4 when tying the other end of the fastening rope 4 to the other ring 23, so that the sleeving positioning pipe can be tightly sleeved on the vertically arranged reinforcement of the reinforcement cage by the fastening rope 4 and cannot be easily separated, so that the positioning device can still be lowered together with the reinforcement cage to position the reinforcement cage in the face of the contact resistance between the outer abutting positioning member 3 and the steel casing.

[0037] Further, in the embodiment, in order to improve the fastening effect of the fastening rope 4 on the positioning device and the reinforcement cage, and to facilitate the separate upward lifting of the positioning device, before passing through the cage hole of the reinforcement cage, the construction personnel also winds the fastening rope 4 at least one turn on one round hoop 1 and ties at least one knot on the other round hoop 1, so that when the construction personnel can separate the positioning device from the reinforcement cage by untieing the fastening rope 4, the fastening rope 4 is still tied to the round hoop 1.

[0038] It should be noted that in other embodiments, the fastening rope 4 can be tied to both round hoops 1, or can be wound around both round hoops 1.

[0039] In addition, in other embodiments, the number of round hoops 1 can also be three or more.

[0040] Further, in the embodiment, in order to facilitate the tightening of the fastening rope 4, a rope tightener 24 is tied to one of the rings 23, and one end of the fastening rope 4 is fixedly connected to the rope tightener 24, so that the construction personnel can pull the fastening rope 4 by controlling the rope tightener 24 to pull the positioning device and the reinforcement cage.

[0041] Further, in the embodiment, in order to facilitate the later lifting of the positioning device, the sleeving positioning pipe 2 includes a reinforcement sleeving pipe 21 and an external sleeving pipe 22, the external sleeving pipe 22 is sleeved on the upper end of the reinforcement sleeving pipe 21, and the reinforcement sleeving pipe 21 is sleeved on the vertically arranged reinforcement of the reinforcement cage downward; and after the reinforcement cage is lowered in place, the external sleeving pipe 22 can still extend to a position above the upper end of the steel casing.

[0042] In addition, please refer to Figure 1 In the embodiment, the shape of the outer abutting positioning member 3 is similar to a tea cup handle, and gradually decreases in distance from the round hoop 1 in the vertically downward direction, so that in addition to being able to keep the positioning device centered by abutting the steel casing, the outer abutting positioning member 3 can also guide the movement of the lowering of the positioning device and the reinforcement cage.

[0043] In the present embodiment, the sleeve positioning pipe 2 is a steel pipe, and the fastening rope 4 is a steel wire rope.

[0044] The above-mentioned items not mentioned are applicable to the prior art.

[0045] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A reinforcement cage positioning device for positioning a reinforcement cage within a steel casing, characterised in that, The positioning device comprises: A circular hoop (1) and a sleeved positioning pipe (2), a plurality of sleeved positioning pipes (2) are vertically arranged on the circular hoop (1), and the plurality of sleeved positioning pipes (2) are connected with the vertically arranged steel bars of the reinforcement cage, and the plurality of sleeved positioning pipes (2) abut against the transversely arranged steel bars of the reinforcement cage; A plurality of outer abutting positioning members (3) are arranged on the outer side of the circular hoop (1) and / or the other side of the sleeved positioning pipe (2) opposite to the circular hoop (1), and the plurality of outer abutting positioning members (3) abut against the inner wall of the steel casing; A fastening rope (4) is arranged to connect the transversely arranged steel bars of the reinforcement cage and the sleeved positioning pipe (2).

2. The positioning device of claim 1, wherein, A plurality of circular hoops (1) are arranged vertically and equidistantly, and each sleeved positioning pipe (2) is fixedly connected with the plurality of circular hoops (1).

3. The positioning device of claim 1, wherein, The sleeved positioning pipe (2) comprises a steel sleeved pipe (21) and an external sleeved pipe (22) which are connected with each other, the steel sleeved pipe (21) is fixedly arranged on the circular hoop (1), and the external sleeved pipe (22) extends upward out of the steel casing.

4. The positioning device of claim 1, wherein, An annular body (23) is fixedly arranged at the upper end of the sleeved positioning pipe (2), and one end of the fastening rope (4) is connected to the annular body (23).

5. The positioning device of claim 4, wherein, A rope tightener (24) is fixedly arranged at the upper end of the sleeved positioning pipe (2), and the other end of the fastening rope (4) is fixedly connected to the rope tightener (24) after passing through the steel bars of the reinforcement cage.

6. The positioning device of claim 1, wherein, The fastening rope (4) is also wound around the circular hoop (1).

7. The positioning device of claim 1, wherein, In the vertical downward direction, the distance between the outer abutting positioning member (3) and the circular hoop (1) gradually decreases.

8. The positioning device of claim 1, wherein, The circular hoop (1) is a steel circular hoop, the sleeved positioning pipe (2) is a steel pipe, and the fastening rope (4) is a steel wire rope.

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