CN216625250U

CN216625250U - Portable stable circumferential support device for placing power pipeline

Info

Publication number: CN216625250U
Application number: CN202220031645.1U
Authority: CN
Inventors: 刘钦; 罗世云; 鲁晓明; 罗亮; 张楚; 凌涛; 张舟; 刘文拓; 曹虎成
Original assignee: First Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Current assignee: First Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-05-27
Anticipated expiration: 2032-01-07

Abstract

The utility model relates to a portable stable circumferential support device for placing power pipelines, which comprises: the pipe comprises a pipe body, a circumferential positioning die, pipe body outer layer steel bars, pipe body inner layer steel bars and screw caps; the positioning steel plates are provided with nut openings for placing nuts and are fixed on the inner-layer steel bars of the pipe body, and the plurality of positioning steel plates are distributed at intervals along the circumferential direction of the inner wall of the pipe body; the bolt extends into the pipe body through a bolt opening on the nut; the pressing plate is provided with a through hole for a bolt to pass through; the annular support extends along the circumferential direction of the inner wall of the pipe body and is divided into an annular connecting plate and a flange plate, the flange plate is clamped between the pressing plate and the pipe body, and the flange plate is tightly pressed on the pipe body through the pressing plate by a bolt; and the cable support is arranged along the annular support at intervals up and down and extends transversely. Easy dismounting, the efficiency of construction is high, is favorable to erectting cable support, and stability is good.

Description

Portable stable circumferential support device for placing power pipeline

Technical Field

The utility model relates to the field of laying of pipeline cables, in particular to a portable stable circumferential support device for placing power pipelines.

Background

The urban underground engineering of China is rapidly developed along with the enlargement of the urban scale, the construction technology of pipelines under urban roads, such as communication, electric power, tap water, sewage, gas and the like, is gradually improved in the urban great-rise civil construction, particularly the underground electric power tunnel construction technology makes a major breakthrough, and meanwhile, the tunnel pipe generates a plurality of problems in the construction process, particularly the connection between the tunnel pipe and the cable annular bracket.

The conventional connection method of the tunnel power tube and the cable annular bracket is to weld the annular bracket on an embedded steel band on the power tunnel tube. Because when the electric power tunnel pipe is prefabricated, the centrifugal vibrator vibrates and easily causes the built-in fitting off normal, leads to the form removal difficulty, forces the form removal and easily damages the pipe shaft to the built-in fitting off normal influences the installation quality of follow-up support, increases installation construction intensity of labour, and the construction operation environment is poor in narrow and small pipeline space simultaneously, and the potential safety hazard is big, causes the construction progress slow, with high costs. Among the prior art, the annular support dismouting is inconvenient, and the efficiency of construction is low, and the support cable is not stable enough, is unfavorable for cable laying.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a portable stable circumferential support device for placing power pipelines, which is convenient to disassemble and assemble, high in construction efficiency, favorable for erecting cable supports and good in stability.

In order to solve the above problems, a portable stabilizer ring support device for placing an electric power pipeline is adopted, comprising:

the pipe body is formed by pouring concrete;

the annular positioning mould is used for supporting a mould and pouring the pipe body;

the outer layer steel bars of the pipe body are circumferentially arranged along the inner wall of the annular positioning die and are embedded in the inner wall of the annular positioning die;

the inner layer steel bars of the pipe body are concentric with the outer layer steel bars of the pipe body, but are spaced from each other and are arranged along the circumferential direction of the inner wall of the pipe body;

the screw caps are arranged in parallel with the pipe body in the radial direction, a bolt opening is arranged along the axial direction of the screw caps, and the screw caps are distributed at intervals along the circumferential direction of the inner wall of the pipe body;

the positioning steel plates are provided with nut openings for placing nuts and are fixed on the inner-layer steel bars of the pipe body, and the plurality of positioning steel plates are distributed at intervals along the circumferential direction of the inner wall of the pipe body;

the bolt extends into the pipe body through a bolt opening on the nut;

the pressing plate is provided with a through hole for a bolt to pass through;

the annular support extends along the circumferential direction of the inner wall of the pipe body and is divided into an annular connecting plate and a flange plate, the flange plate is clamped between the pressing plate and the pipe body, and the flange plate is tightly pressed on the pipe body through the pressing plate by a bolt;

and the cable support is arranged along the annular support at intervals up and down and extends transversely.

As a further improvement of the portable stable circumferential support device for placing the power pipeline, the circumferential positioning die is made of an arc-shaped steel template.

As a further improvement of the portable stable circumferential support device for placing the power pipeline, the screw cap is fixed on the inner layer steel bar of the pipe body through a positioning steel plate.

As a further improvement of the portable stable circumferential support device for placing the power pipeline, the positioning steel plate adopts U-shaped ribs to fasten the root of a nut, electric welding is adopted to be welded with inner layer steel bars of the pipe body, the opening of the nut is tightly attached to an inner layer template of a circumferential positioning mould when pouring, and cotton is adopted for plugging, and the nut is an M24 bolt hole polyurethane sleeve.

As a further improvement of the portable stable ring support device for placing the power pipeline, 7 groups of bolt hole sites are arranged along the ring direction of the ring support, the bolt hole sites are arranged on two sides of the ring support along vertical radial symmetry, 3 groups are arranged on each side, the top of the ring support is also provided with a group of bolt hole sites which are in butt joint with the top of the pipe, each group of bolt hole sites is 4, and every two bolt hole sites are respectively arranged on the pressing plates for clamping and pressing the flange plates on two sides of the ring support.

As a further improvement of the portable stable ring support device for placing the power pipeline, a base plate is arranged between the pressing plate and the pipe body, and a wedge-shaped base plate is arranged between the pressing plate and the bolt.

As a further improvement of the portable stable ring-shaped support device for placing the power pipeline, when the ring-shaped support is installed, an operating platform is erected, and the top of the ring-shaped support is vertically supported by a steel pipe on the operating platform.

As a further improvement of the portable stable ring-shaped support device for placing the power pipeline, the outer surface of the screw cap is in a thread form, and vertical support ribs are arranged in the threads.

The support rib is favorable for preventing the nut from deforming too much when concrete is poured, and is not favorable for ensuring the stability of the internal thread of the nut bolt hole, thereby influencing the butt joint with the bolt.

As a further improvement of the portable stable ring-shaped support device for placing the power pipeline, a space is arranged between the support rib and the inner wall of the thread.

The interval is favorable to the thick liquid inflow, keeps the stable pre-buried in the concrete of nut.

The utility model has the following beneficial effects:

(1) the safety and environmental protection are realized; due to poor ventilation of the pipeline and narrow operation space in the construction of the welding method, the safety of operators is seriously affected by toxic gas generated by welding; and the bolt pressure plate is adopted for fixation, no smoke and dust is generated in the construction process, the safety of operating personnel is ensured, and the emission of toxic gas is reduced.

(2) The construction efficiency is high; the welding method is low in construction speed and efficiency, the annular support is directly installed by the bolt pressurizing plate fixing method, original welding amount is mainly replaced by bolt connection, and installation efficiency is greatly improved.

(3) The quality of the entity is good; in the welding method, because the embedded steel belt influences the durability of concrete, after the annular support is installed, the concrete is easy to crack, a gap is formed between the inner wall of the pipe body and the annular support, welding slag pollutes the concrete surface in the welding process, and the appearance quality is poor.

(4) The cost is low; the welding method has the advantages that the welding amount is large, the material cost and the labor cost are high due to the whole ring welding, and the method for fixing the annular bracket by the bolt pressurizing plate greatly reduces the work amount for fixing the bracket and saves the labor cost and the material cost.

(5) The device has the advantages of simple application principle, convenient operation and strong applicability.

This device is applicable to municipal works underground pipe gallery engineering construction, is particularly useful for power pipe gallery engineering construction. And installing the inner and outer templates of the electric tunnel pipe sheet pipe after the screw sleeve is installed, transferring the inner and outer templates into a vibration table by using a gantry crane, and pouring concrete.

Drawings

FIG. 1 is a plan view of a positioning die.

Fig. 2 is a schematic view of a vertical positioning elevation arrangement.

FIG. 3 is a schematic view of the arrangement of the polyurethane sleeve in the M24 bolt hole on the vertical surface.

Fig. 4 is a nut alignment plate layout.

Fig. 5 is a schematic view of the arrangement of the uplift points.

FIG. 6 is a partially enlarged view of the pulling-resistant point;

wherein (a) is a transverse sectional view and fig. 6(b) is a plan view.

Fig. 7 is a vertical arrangement view of the screw sleeve with the clamping rail embedded in the pipe.

Fig. 8 is a plan view of the rail clip turnbuckle.

Fig. 9 is a detailed view of the rail clamping screw sleeve.

Wherein, (a) and (d) are respectively a top view and a front view of the backing plate;

(b) respectively, a top view and a front view of the platen;

(c) and (f) are respectively a top view and a front view of the wedge-shaped base plate.

FIG. 10 is a cable support construction layout;

wherein (a) is a first-stage layout drawing, (b) is a second-stage layout drawing, (c) is a third-stage layout drawing, and (d) is a fourth-stage layout drawing.

Reference numerals: 1. the hoop positioning mould 2, the outer layer steel bar of the pipe body; 3. inner layer steel bars of the pipe body; 4. a nut; 5. positioning a steel plate; 6. a tube body; 7. pressing a plate; 8. a nut mouth; 9. a bolt; 10. an annular support; 11. a circumferential connecting plate; 12. a flange plate; 13. a base plate; 14. a wedge-shaped base plate; 15. an operating platform; 16. a steel pipe; 17. a support rib; 18. spacing; 19. a cable support.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1-10, a portable stabilizer ring bracket device for housing power lines, comprising:

the pipe body 6 is formed by pouring concrete;

the annular positioning mould 1 is used for supporting a mould and pouring a pipe body 6;

the outer layer steel bars 2 of the pipe body are arranged along the circumferential direction of the inner wall of the circumferential positioning die 1 and are embedded in the inner wall of the circumferential positioning die 1;

the pipe body inner layer steel bars 3 are concentric with the pipe body outer layer steel bars 2, but are spaced from each other, and are arranged along the circumferential direction of the inner wall of the pipe body 6;

the screw caps 4 are arranged in parallel with the pipe body 6 in the radial direction, a bolt opening is formed in the axial direction of the screw caps 4, and the screw caps 4 are distributed at intervals along the circumferential direction of the inner wall of the pipe body;

the positioning steel plates 5 are provided with nut openings 8 for placing nuts 4 and are fixed on the inner-layer steel bars 3 of the pipe body, and the plurality of positioning steel plates 5 are distributed at intervals along the circumferential direction of the inner wall of the pipe body;

the bolt 9 extends into the pipe body 6 through a bolt opening on the nut 4;

the pressing plate 7 is provided with a through hole for the bolt 9 to pass through;

the annular support 10 extends along the circumferential direction of the inner wall of the pipe body 6 and is divided into an annular connecting plate 11 and a flange plate 12, the flange plate 12 is clamped between the pressing plate 7 and the pipe body 6, and the bolt 9 presses the flange plate 12 on the pipe body 6 through the pressing plate 7;

and the cable supports 19 are arranged in a plurality of ways along the annular support 10 at intervals up and down and extend transversely.

In this embodiment, the annular positioning mold 1 is made of an arc-shaped steel template.

In this embodiment, the nut 4 is fixed to the inner steel bar 3 of the pipe body by a positioning steel plate 5.

In this embodiment, the positioning steel plate 5 adopts the U-shaped muscle fastening nut 4 root, adopts electric welding with pipe shaft inlayer reinforcing bar 3 welding, and the ring direction positioning die 1 inlayer template is hugged closely when pouring to the nut mouth 8 to adopt the cotton shutoff, the nut 4 is M24 bolt hole polyurethane sleeve.

In this embodiment, set up 7 groups of bolt hole sites along ring carrier 10 hoop, set up in ring carrier 10 both sides along vertical radial symmetry, 3 groups in every side, ring carrier 10 top still sets up a set of and the butt joint of crown of tubes, and every group bolt hole site is 4, two liang sets up respectively on the clamp plate 7 of the clamp ring carrier 10 both sides flange board 12.

In the present embodiment, a backing plate 13 is provided between the pressure plate 7 and the pipe body 6, and a wedge-shaped backing plate 14 is provided between the pressure plate 7 and the bolt 9.

In the embodiment, when the ring-shaped support 10 is installed, an operation platform 15 is erected, and a steel pipe 16 is used for vertically supporting the top of the ring-shaped support 10 on the operation platform 15.

In this embodiment the outer surface of the nut 4 is in the form of a thread in which vertical support ribs 17 are provided.

The support ribs 17 are beneficial to preventing the nut 4 from deforming too much during concrete pouring, and are not beneficial to ensuring the stability of the internal thread of the bolt hole of the nut 4, so that the butt joint with the bolt is affected.

In this embodiment, there is a space 18 between the support rib 17 and the inner wall of the thread.

The gap 18 facilitates the inflow of grout and keeps the nut firmly embedded in the concrete.

Example 2

As shown in fig. 1-10, the anchoring stability of the threaded sleeve is ensured by using the binding force between the threaded sleeve and the concrete as the anchoring force, and the fastening force is applied between the threaded sleeve and the bolt to fix the pressing plate and the annular cable support, thereby completing the quick connection between the annular cable support and the concrete pipeline. The specific operation is that firstly, the finite element calculation software is used for carrying out structural mechanics analysis and checking calculation, the rationality of the structure is verified, and the requirements of strength, rigidity and stability are met; secondly, when the pipeline is prefabricated in a prefabricating field, a small-size concave-tooth polyamide material thread sleeve is pre-buried, and after the destructiveness of the pipe joint and the pull-out resistance test of the bolt are qualified, the pipe joint is transported to a construction site to install and fix the prefabricated pipeline; and finally, installing the annular cable support and all components in the pipeline, and fixing the pressing plate and the annular cable support by means of fastening force between the threaded sleeve and the bolt.

1 preparation for construction

(1) The technical background of the work shift is carried out before the start of the work, so that the operators can know the operation key points, the construction method and measures in more detail, better control the quality and scientifically organize the construction.

(2) And preparing materials and the like.

(3) And hardening the prefabricated site to be smooth.

(4) And performing site survey, measurement lofting and other work before excavation of the foundation pit.

2 prefabricated pipe reinforcement

The electric tunnel pipe body steel bars are constructed strictly according to the design requirements, and are firmly bound or spot-welded and cannot be loosened; the thickness and the number of the reinforcing steel bar protection layers are strictly arranged according to the standard requirements, and the reinforcing steel bar protection layer is not less than 4 blocks per square meter.

3 Pre-buried mounting bolt hole

The position positioning accuracy of the screw sleeve directly influences the position installation quality of a subsequent engineering support. And determining the position by adopting a vertical and circumferential combination method.

(1) After the pipe body steel bar is bound, hanging the hammer ball, determining the vertical position of the bolt hole according to the height so as to determine the vertical position of the annular die.

(2) The bolt hole hoop positioning die processed by the steel plate is combined with a vertical height position to accurately position the center position of the threaded sleeve on the outer layer steel bar of the pipe body and mark the steel bar. The circular positioning die is processed by adopting a steel plate, the thickness of the steel plate is 1cm, the height of the steel plate is 5cm, and the processing radius is 1.64 m. The layout is shown in fig. 1-2.

(3) Because the electric tunnel pipe adopts the high-precision steel arc-shaped template, the swivel nut is easy to deviate when in centrifugal vibration on the vibration table, and a double-layer positioning steel plate with the thickness of 7cm is adopted. And (3) installing, welding and fixing the positioning steel plate of the thread insert according to the positioned position, wherein the steel plate must be firmly welded, otherwise, the subsequent thread insert and the like are loosened and deviated.

The positioning steel plate adopts U-shaped ribs to fasten the root of the threaded sleeve, adopts electric welding to follow the steel bar of the pipe body for welding, and the threaded sleeve port is tightly attached to the template and is blocked by cotton cloth for preventing concrete slurry from soaking into the threaded sleeve.

When the utility model is applied to the construction of 220KV agricultural large power transmission and transformation matching route engineering of a district transformation project, similar cases in China are summarized by reference and summary, and the characteristics of field engineering are combined, so that the scheme is optimized, the construction safety can be effectively guaranteed, the progress is accelerated, the cost is saved, the technical problem of connecting a pipe body and a support is solved, and a good construction effect is obtained.

5 bolt hole pullout resistance test

And (3) performing a pipe joint destructive test after the age of the pipe joint of the natural maintenance of the prefabricated tunnel pipe is not less than 28d and the strength meets the requirement, performing an anti-pulling force test after the pipe joint destructive test is qualified, and checking whether the bolt meets the requirement after being installed.

The node power is born by 4M 24 bolts and clamp plate assembly, and the bolt is along the circumferential interval D100 mm, and 4 bolts share node power and node bending moment, and bow-shaped position bolt (2, 6 number positions) are in most unfavorable state, and its position is 18 degrees with horizontal angle, through considering the actual single bolt biggest atress (axial) 105.2KN of on-the-spot actual conditions, installs the tunnel pipe after qualified.

6 excavation of foundation pit and pipe joint foundation pouring

(1) And (5) carrying out foundation pit excavation and foundation pouring and pipe joint prefabrication synchronous construction.

(2) The construction process comprises the following steps: measuring and lofting → rotary excavating and grouting pile supporting → excavating and transverse supporting of a foundation pit → constructing a pipe joint foundation.

Firstly, measurement lofting: lofting the regional boundary line of the rotary-drilled pile on site by using a total station, laying pile positions in the lofted region according to a design drawing, lofting the pile positions according to a construction design drawing, making an obvious mark by using white lime, and well making construction lofting records; and (4) measuring the elevation of the original ground by using a level gauge, and cleaning the original ground according to the actual situation on site so as to control the depth of the pile in the actual construction process.

Secondly, supporting the rotary excavating cast-in-place pile: drilling holes by adopting a rotary drilling rig, putting a reinforcement cage down by a crane, and pouring concrete by using a pump truck.

Thirdly, excavation and transverse supporting of a foundation pit: and excavating the foundation pit after the cast-in-place pile reaches a certain strength, adopting 'segmentation and layering' excavation, timely installing an inner support according to design requirements, and manually cleaning the foundation pit to 30cm above the foundation pit.

Fourthly, basic construction: and (4) checking and accepting after manually cleaning the foundation, erecting a mold in time to pour concrete after the foundation is qualified, and strictly controlling the flatness and elevation of the foundation top.

7 pipe joint installation

And after the destructiveness and the pulling resistance of the pipe joints are tested and the foundation pouring is finished and the acceptance is qualified, the pipe joints are installed by adopting a 70t truck crane.

(1) Survey lofting

Firstly, lofting a central line point of the electric tunnel pipe by using a total station.

And secondly, lofting the side line points of the tunnel power pipe base by using a total station.

Checking the elevation of the first layer of foundation (c1) by using a level meter, filling the uneven part of the part (the position of the center line and the side line of the foundation) with mortar at the lower part, and grinding the part at the higher part; and ejecting the central line and the base side line by using an ink line after the flatness is processed.

Fourthly, hoisting the pipe joints by adopting a 70t crane and manual assistance and hoisting the pipe joints by adopting an L-shaped simple hoisting tool. And after the pipe joint is hoisted, the pipe joint is accurately positioned, and the two sides of the pipe joint are fixed by shale bricks or other materials.

8 interface process and socket encapsulation

After the pipe joints are installed to be 20m in length, the abutted seams between the pipe joints are subjected to waterproof treatment and pipe seat construction in time.

(1) After the pipe joints are accurately positioned and fixed, gaps of the pipe joints above the base are filled with asphalt floc;

(2) chiseling, brushing and wetting the pipe wall in the range of the abutted seam smearing belt above the base by using water, then paving a 20#10 multiplied by 10 steel wire net with the net width of 22cm, wherein the circumferential lap joint length of the steel wire net is more than 10cm, the length of the steel wire net extending into the base is 15cm, and finally smearing a cement mortar belt with the thickness of 2cm and the ratio of 1: 2.5;

(3) and paving a polyurethane waterproof cloth on the surface of the dried mortar plaster.

(4) And (3) packaging a tube seat: concrete is coated on the section of the pipe joint 1/2.

9 mounting of the support

(1) The structural design diagram illustrates that:

the diameter of the tunnel pipe is 2.8M, the annular support is formed by a flange plate, an annular connecting plate (the annular flange plate and the connecting plate are welded together during factory machining), 7 pairs of bolt holes are arranged in the annular direction, 3 groups of bilateral symmetry are formed, 1 pair of pipe tops are formed, the annular support and the pipe body are fixed in a rail clamping mode, and each pair of fixing points are clamped by 4M 24 bolts through a pressing plate to form the annular support, as shown in fig. 7.

(2) Installing the cable bracket system in the following specific sequence:

the construction method comprises the following steps: pouring a concrete flowing surface at the bottom of the tunnel pipe;

and a second construction step: the annular support is divided into 2 pieces, the numbers of the annular support are A and B, the annular support is installed with the A and is fixed by bolts and a base plate;

mounting the B, and fixing the B by using bolts and a base plate;

the construction step four: installing transverse cable support

(1) After the tunnel pipe is installed, a total station is used for measuring and lofting out the center line of the top of the tunnel pipe, the position of the pre-buried hole is checked, the position of the AB top point of the annular support is determined, marks are made, and if deviation exists, the tunnel pipe is adjusted. The initially installed tunnel pipe is very important and plays a guiding role for the subsequently installed pipeline. And the measurement lofting and rechecking are enhanced in the installation process.

(2) And after the tunnel pipe bottom concrete reaches the design strength, the annular support A, B is installed.

(3) Before the installing support, firstly the bolt hole is cleaned, secondly the annular support is adjusted manually and is stabilized, the support is closely attached to the inner wall of the pipe body, the bolt and the pressing plate are installed, and the bolt is installed from bottom to top. The pressing plate is tightly pressed and closely attached to the annular support, the bolts are fastened by a torque wrench, and finally the transverse support is installed.

Because the diameter of the electric power pipe is 2.8m, the operation is somewhat difficult in the installation process, a 1 m-high operation platform is erected by using a steel pipe in the installation process, auxiliary measures are taken when a steel ring is installed, and the top of the annular support is vertically supported by using the steel pipe.

10 pit backfill

Backfilling the foundation pit and removing the inner support layer by layer according to design and standard requirements.

11 material

The steel bar, bolt sleeve, bolt, backing plate, clamp plate, location steel sheet, location ring mould, support, seamless steel pipe. See the main material table for details.

Table 1 main materials table

12 device

The electric drill, the high-pressure water gun, the 5-meter measuring tape and the trolley are detailed in a main equipment instrument.

TABLE 2 Main Equipment Table

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the utility model, and all the properties or uses are considered to be within the scope of the utility model.

Claims

1. A portable stable circumferential support device for placing power pipelines, comprising:

the pipe body (6) is formed by pouring concrete;

the annular positioning mould (1) is used for supporting a mould and pouring the pipe body (6);

the outer layer steel bars (2) of the pipe body are circumferentially arranged along the inner wall of the annular positioning die (1) and are embedded in the inner wall of the annular positioning die (1);

the pipe body inner layer steel bars (3) are concentric with the pipe body outer layer steel bars (2) but are spaced from each other, and are arranged along the circumferential direction of the inner wall of the pipe body (6);

the screw caps (4) are arranged in parallel with the pipe body (6) in the radial direction, a bolt opening is formed in the axial direction of the screw caps, and the screw caps (4) are distributed at intervals along the circumferential direction of the inner wall of the pipe body;

the positioning steel plates (5) are provided with nut openings (8) for placing nuts (4) and are fixed on the inner-layer steel bars (3) of the pipe body, and the plurality of positioning steel plates (5) are distributed at intervals along the circumferential direction of the inner wall of the pipe body;

the bolt (9) extends into the pipe body (6) through a bolt opening on the nut (4);

the pressing plate (7) is provided with a through hole for the bolt (9) to pass through;

the annular support (10) extends along the circumferential direction of the inner wall of the pipe body (6) and is divided into an annular connecting plate (11) and a flange plate (12), the flange plate (12) is clamped between the pressing plate (7) and the pipe body (6), and the bolt (9) presses the flange plate (12) on the pipe body (6) through the pressing plate (7);

and the cable supports (19) are arranged in a plurality of ways along the annular support (10) at intervals up and down and extend transversely.

2. The portable stable toroidal support device for placing electric power pipelines according to claim 1, characterized in that said toroidal positioning mold (1) is made of arc steel formwork.

3. The portable stabilizer ring support device for placing electric power pipeline according to claim 1 is characterized in that the nut (4) is fixed on the inner layer steel bar (3) of the pipe body by a positioning steel plate (5).

4. The portable stable circumferential support device for placing power pipelines of claim 1, wherein the positioning steel plate (5) is fastened at the root of a nut (4) by a U-shaped rib, and is welded with the inner layer steel bar (3) of the pipe body by electric welding, the nut mouth (8) is tightly attached to the inner layer template of the circumferential positioning mould (1) during pouring and is blocked by cotton, and the nut (4) is a polyurethane sleeve with an M24 bolt hole.

5. The portable stable circumferential support device for placing the power pipeline according to claim 1, wherein 7 groups of bolt hole sites are arranged along the circumferential direction of the annular support (10), the bolt hole sites are symmetrically arranged at two sides of the annular support (10) along the vertical radial direction, 3 groups are arranged at each side, the top of the annular support (10) is further provided with one group of bolt hole sites which are butted with the top of the pipe, each group of bolt hole sites is 4, and every two bolt hole sites are respectively arranged on the pressing plates (7) of the flange plates (12) at two sides of the clamping annular support (10).

6. The portable stable toroidal support device for laying electric power pipelines according to claim 1, characterized in that a shim plate (13) is arranged between the pressure plate (7) and the pipe body (6), and a wedge-shaped shim plate (14) is arranged between the pressure plate (7) and the bolt (9).

7. The portable stabilizing circumferential support device for placing electric power pipelines according to claim 1, characterized in that when said circumferential support (10) is installed, an operation platform (15) is set up, and a steel pipe (16) is adopted to vertically support the top of the circumferential support (10) on the operation platform (15).

8. Portable stabilizing ring support device for the placement of electric power pipelines according to claim 1, characterized in that the outer surface of the nut (4) is in the form of a thread, in which vertical support ribs (17) are provided.

9. The portable stabilizing ring support device for the placement of electrical power pipelines according to claim 8 characterized in that there is a space (18) between the support rib (17) and the inner wall of the thread.