CN218027624U - Bored concrete pile steel reinforcement cage construction equipment - Google Patents

Abstract

The utility model relates to the technical field of cast-in-place piles, in particular to a cast-in-place pile reinforcement cage construction device, which comprises a net cage body, a positioning drill rod, a hoisting mechanism, a clamping plate table, a clamping plate mechanism, a steel protecting cylinder, a lifting mechanism and a hydraulic push rod, wherein the upper end and the lower end of each net cage body are respectively prefabricated with an upper connecting piece and a lower connecting piece, because the upper end of each reinforcement cage is provided with an upper connecting piece, the distance between the outer diameter of the upper connecting piece and the hole wall is smaller, the radial moving range of the mesh cage body in the pile hole is narrowed, the condition of wall scraping and deflection is not easy to occur in the process of placing the mesh cage body downwards, the integral position of the reinforcement cage and the position of the hole wall are relatively fixed, the condition of floating or sinking cannot occur in the subsequent grouting process, the reinforcement cage is ensured to be in the designed position, the reinforcement cage does not need to be adjusted subsequently, and the influence on the construction process caused by the factors such as deflection, floating and sinking of the reinforcement cage is avoided.

Description

Bored concrete pile steel reinforcement cage construction equipment

Technical Field

The utility model relates to a bored concrete pile technical field particularly relates to bored concrete pile steel reinforcement cage construction equipment.

Background

The cast-in-place pile has the advantages of strong bearing capacity, no vibration during construction, low noise, suitability for use in dense urban building areas and the like, wherein the cast-in-place pile construction technology is a concrete technology with low construction cost, simple construction operation, no vibration, no noise and no soil squeezing effect, the cast-in-place pile construction technology is widely applied to the field of construction engineering, and the dry operation is a cast-in-place pile construction process flow: pile position determination → drilling → hole cleaning → steel reinforcement cage lowering → concrete pouring.

The existing reinforcement cage is usually smaller than the inner diameter of a pile hole, in the process flow of the reinforcement cage, if the reinforcement cage is inclined, the inner wall of the pile hole can be damaged, so that the requirement on the construction process of hoisting the pile down is high, the speed is low, and when the reinforcement cage is lowered into the pile hole, after the concrete is poured subsequently, the reinforcement cage can float upwards or sink, the position of the reinforcement cage needs to be readjusted to reach the design standard, so that the overall speed of the construction of the cast-in-place pile can be delayed.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses the first aspect of purpose provides a bored concrete pile steel reinforcement cage construction equipment, include:

the net cage body comprises a plurality of longitudinal steel bars and steel bar hoops welded and fixed on the inner sides of the longitudinal steel bars, and the longitudinal steel bars are distributed on the outer sides of the steel bar hoops in a central symmetry manner;

the steel casing is arranged at the top end of the pile hole, and the top end of the steel casing protrudes out of the ground;

the clamping plate table is arranged on the outer side of the top end of the steel casing;

the clamping plate mechanism is hinged to the top of the clamping plate table and used for positioning the net cage body;

the hoisting mechanism is arranged above the steel casing and is used for hoisting the net cage body;

the upper connecting piece is fixedly arranged on the outer side of the top of the net cage body, and the outer diameter of the upper connecting piece is equal to the inner diameter of the steel casing;

the lower connecting piece is fixedly arranged on the inner side of the bottom of the net cage body;

wherein, a positioning drill rod is arranged between two adjacent net cage bodies, penetrates through the lower connecting piece and the upper connecting piece from inside to outside and is used for fixing the two adjacent net cage bodies, and

the lifting mechanism comprises a telescopic rod capable of longitudinally lifting in the pile hole;

and the hydraulic push rod is fixedly arranged at the bottom end of the telescopic rod, can horizontally stretch out and draw back in the pile hole along the radial direction, and is used for extruding the positioning drill rod arranged on the net cage body to the hole wall from bottom to top in the pile hole along the radial direction so as to limit the position of the net cage body in the pile hole.

Furthermore, the upper connecting piece comprises an outer ring plate, a limiting ring sleeve and first drill rod sleeves, the outer ring plate is welded on the outer walls of the longitudinal steel bars, the limiting ring sleeve is arranged on the outer side of the outer ring plate and distributed with the outer ring plate in a concentric circle mode, more than two first drill rod sleeves are arranged and distributed between the outer ring plate and the limiting ring sleeve in a central symmetry mode, two ends of each first drill rod sleeve are fixedly welded with the outer ring plate and the limiting ring sleeve respectively, and two ends of each first drill rod sleeve penetrate through the outer ring plate and the limiting ring sleeve respectively.

Furthermore, the lower end of the outer ring plate is turned inwards to form a first limiting folded plate, first steel bar preformed holes are formed in the positions, corresponding to the longitudinal steel bars, of the first limiting folded plate along the circumferential sides, first blind holes corresponding to the number of the longitudinal steel bars are formed in the upper end face of the first limiting folded plate, and the first blind holes are located in the middle of the two adjacent first steel bar preformed holes.

Further, the lower connecting piece comprises an inner ring plate and a second drill rod sleeve, the inner ring plate is welded and fixed on the inner walls of the longitudinal steel bars, and the second drill rod sleeve is welded and fixed on the inner side wall of the inner ring plate and penetrates through the inner ring plate.

Further, the upper end of interior crown plate is rolled over outwards and is formed the spacing folded plate of second, the spacing folded plate of second corresponds every along week side vertical reinforcement department has all seted up second reinforcing bar preformed hole, just seted up on the lower terminal surface of the spacing folded plate of second with the second blind hole that vertical reinforcement quantity corresponds, the second blind hole is located adjacent two the intermediate position department of second reinforcing bar preformed hole.

Further, when two adjacent net cages are spliced, the two adjacent longitudinal steel bars rotate horizontally by an angle which is half of an included angle between the two longitudinal steel bars.

Further, the inner diameter of the first shank sleeve is equal to the inner diameter of the second shank sleeve.

Furthermore, when the upper connecting piece and the lower connecting piece on two adjacent net cage bodies are in butt joint, the first drill rod sleeve and the second drill rod sleeve on the corresponding side are located on the same axis, and the end parts of the longitudinal steel bars are correspondingly clamped in the first blind hole and the second blind hole respectively.

Compared with the prior art, the utility model discloses a bored concrete pile steel reinforcement cage construction equipment shows beneficial effect lies in:

1. the cage is easy to put: because the upper end of each steel reinforcement cage is provided with the upper connecting piece, the distance between the outer diameter of the upper connecting piece and the hole wall is smaller, the radial moving range of the net cage body in the pile hole is reduced, and the wall scraping and deflection are not easy to occur in the process of placing the net cage body downwards;

2. positioning a cage body: the whole position of the steel reinforcement cage is relatively fixed with the position of the hole wall, so that the steel reinforcement cage cannot float or sink in the subsequent grouting process, the steel reinforcement cage is ensured to be positioned at the design position, the subsequent adjustment of the steel reinforcement cage is not needed, and the influence on the construction process caused by factors such as deflection, floating, sinking and the like of the steel reinforcement cage is avoided;

3. pile body anti-settlement: the inside of pile body has the utility model discloses a reinforcement cage body makes the holistic intensity of pile body higher, and its outer wall has the location drill rod that stretches into the pore wall, can make the pile body more stable in the intraformational position of soil, plays and prevents the effect of subsiding.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.

Drawings

The figures are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing.

Fig. 1 is a schematic structural view of the installation of a bored concrete pile reinforcement cage construction device to a mesh cage body according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the positioning drill rod mounting structure of the bored concrete pile reinforcement cage construction device according to the embodiment of the present invention;

fig. 3 is a partial structural view of a cage body, an upper connecting member and a lower connecting member in the bored concrete pile cage construction apparatus according to the embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of the cage body, the upper connecting member and the lower connecting member of the bored concrete pile cage construction apparatus according to the embodiment of the present invention;

FIG. 5 isbase:Sub>A schematic sectional view taken along line A-A in FIG. 4;

FIG. 6 is a cross-sectional view along line B-B of FIG. 4;

fig. 7 shows an assembly structure of upper and lower connecting members of a cage body in a bored concrete pile cage construction apparatus according to an embodiment of the present invention.

In the drawings, the meaning of each reference numeral is defined as follows:

10. a hoisting mechanism; 20. a clamping plate table; 30. a clamping plate mechanism; 40. a steel casing; 50. a lifting mechanism; 60. a hydraulic push rod; 1. a cage net body; 11. longitudinal reinforcing steel bars; 12. a steel bar hoop; 2. an upper connecting piece; 201. a first steel bar preformed hole; 21. an outer ring plate; 211. a first limit folded plate; 212. a first blind hole; 22. a position-limiting ring sleeve; 23. a first shank sleeve; 3. a lower connecting piece; 301. a second steel bar preformed hole; 31. an inner ring plate; 311. a second limit folded plate; 312. a second blind hole; 32. a second shank sleeve; 4. positioning drill rod

Detailed Description

For a better understanding of the technical aspects of the present invention, specific embodiments are described below in conjunction with the appended drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, and those described in greater detail below, may be implemented in any of numerous ways using any of the cast-in-place pile cage construction devices and methods of construction, as the disclosed concepts and embodiments are not limited to any particular implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[ bored concrete pile steel reinforcement cage construction device ]

With reference to fig. 1, the first aspect of the present invention provides a technical solution, a bored concrete pile reinforcement cage construction apparatus, which mainly comprises a cage body 1, a positioning drill rod 4, a hoisting mechanism 10, a clamping plate table 20, a clamping plate mechanism 30, a steel casing 40, a lifting mechanism 50, and a hydraulic push rod 60, wherein the upper end and the lower end of each cage body 1 are respectively prefabricated with an upper connecting member 2 and a lower connecting member 3.

The steel casing 40 is installed at the top end of a pile hole, the top end of the steel casing 40 protrudes out of the ground by 300mm, the diameter of the steel casing 40 is 1000mm and is made of a steel plate with the thickness of 10mm, the aperture of the pile hole is 800-900mm, the mesh cage body 1 comprises a plurality of longitudinal steel bars 11 and steel bar hoops 12 welded and fixed on the inner sides of the longitudinal steel bars 11, the longitudinal steel bars 11 are distributed on the outer sides of the steel bar hoops 12 in a central symmetry mode, the longitudinal steel bars 11 are made of eight steel bars with the diameter of 28mm, the eight steel bars are arranged on the outer sides of the steel bar hoops 12 with the diameter of 500-600mm in a central symmetry mode and are formed in a welding and fixing mode.

Prefabricated net cage body

The utility model provides a novel net cage body 1 of structure, the top outside of every net cage body 1 all is fixed with connecting piece 2, and goes up 2 external diameters of connecting piece and equal the steel and protect the internal diameter of a section of thick bamboo 40, and the bottom inboard of every net cage body 1 all is fixed with down connecting piece 3.

As shown in fig. 3, the upper connecting member 2 further includes an outer ring plate 21, a position-limiting ring sleeve 22 and a first drill rod sleeve 23, the outer ring plate 21 is welded to the outer walls of the longitudinal steel bars 11, the position-limiting ring sleeve 22 is located outside the outer ring plate 21 and concentrically distributed with the outer ring plate 21, more than two first drill rod sleeves 23 are arranged and centrally symmetrically distributed between the outer ring plate 21 and the position-limiting ring sleeve 22, two ends of the first drill rod sleeve 23 are respectively welded and fixed to the outer ring plate 21 and the position-limiting ring sleeve 22, and two ends of the first drill rod sleeve 23 respectively penetrate through the outer ring plate 21 and the position-limiting ring sleeve 22.

The outer ring plate 21 is bent into a ring cylinder by using a stainless steel plate with the thickness of 5-8mm, the joints of the outer ring plate 21 and each longitudinal steel bar 11 are welded and fixed, the limit ring sleeve 22 is bent into a ring cylinder by using a hot-dip galvanized stainless steel plate and is distributed with the outer ring plate 21 in a concentric circle position, eight first drill rod sleeves 23 are arranged between the outer ring plate 21 and the limit ring sleeve 22, and the inner diameter of each first drill rod sleeve 23 is slightly larger than the outer diameter of each positioning drill rod 4.

So, outer crown plate 21 can further strengthen vertical reinforcing bar 11 structure, and spacing between spacing ring cover 22 and the pore wall is littleer, makes the radial home range of net cage body 1 in the stake hole reduce, is being placed net cage body 1 in-process downwards, is difficult to appear the skew condition.

As shown in fig. 3, the lower connecting member 3 further includes an inner ring plate 31 and a second drill rod sleeve 32, the inner ring plate 31 is welded and fixed to the inner walls of the longitudinal steel bars 11, and the second drill rod sleeve 32 is welded and fixed to the inner side wall of the inner ring plate 31 and penetrates through the inner ring plate 31.

The inner ring plate 31 is bent into a ring cylinder shape by adopting a stainless steel plate with the thickness of 5 to 8mm, the joints of the inner ring plate 31 and each longitudinal steel bar 11 are welded and fixed, and eight second drill rod sleeves 32 which are distributed in a central symmetry manner are welded and fixed on the inner side wall of the inner ring plate 31.

Therefore, the longitudinal steel bar 11 structure can be further strengthened by the arranged outer ring plate 21 and the inner ring plate 31 on the net cage body 1, and the first drill rod sleeve 23 and the second drill rod sleeve 32 are respectively arranged for subsequently installing and positioning the drill rods 4 to provide stable installation positions, so that the stability of the mutual connection of the net cage bodies 1 is ensured.

With reference to fig. 4 and 5, in a preferred embodiment, the lower end of the outer ring plate 21 is turned inward to form a first limiting flap 211, a first steel bar preformed hole 201 is formed in a position of the first limiting flap 211 corresponding to each longitudinal steel bar 11 along the circumferential side, first blind holes 212 corresponding to the number of the longitudinal steel bars 11 are formed in the upper end surface of the first limiting flap 211, and the first blind holes 212 are located in the middle of two adjacent first steel bar preformed holes 201.

Referring to fig. 4 and 6, in a preferred embodiment, the upper end of the inner annular plate 31 is folded outward to form a second limiting folded plate 311, the second limiting folded plate 311 has second steel bar preformed holes 301 along the circumferential side corresponding to each longitudinal steel bar 11, the lower end surface of the second limiting folded plate 311 has second blind holes 312 corresponding to the number of the longitudinal steel bars 11, and the second blind holes 312 are located in the middle of two adjacent second steel bar preformed holes 301.

Further, when two adjacent net cage bodies 1 splice, half angle of contained angle between two adjacent vertical reinforcement 11 of horizontal rotation, can make two net cage bodies 1's concatenation department vertical reinforcement 11 distribute more evenly, make the pile body structure after the shaping even stable, last connecting piece 2 on two adjacent net cage bodies 1, when lower connecting piece 3 docks, the first drill rod sleeve 23 and the second drill rod sleeve 32 that correspond one side are located the same axis, and the tip of a plurality of vertical reinforcement 11 corresponds the block respectively in first blind hole 212 and second blind hole 312, set up the blind hole, can accelerate net cage body 1's butt joint speed, reduce the butt joint degree of difficulty.

Furthermore, in order to ensure that the setting shank 4 can pass smoothly through the first shank sleeve 23 and the second shank sleeve 32, the inner diameter of the first shank sleeve 23 is equal to the inner diameter of the second shank sleeve 32.

Thus, as shown in fig. 7, the first limiting folding plate 211 formed by being folded inwards and the second limiting folding plate 311 formed by being folded outwards can limit the relative distance between the longitudinal steel bars 11, and when the adjacent netpen bodies 1 are butted with each other, the longitudinal steel bars 11 can be clamped in the first blind hole 212 and the second blind hole 312, so that the butting height and the butting angle when the netpen bodies 1 are butted with each other can be limited, which is beneficial to the direct butting of the first drill rod sleeve 23 and the second drill rod sleeve 32, and the preparation for subsequently installing and positioning the drill rod 4 is made.

Splicing device of net cage body

Combine shown in fig. 1, splint platform 20 sets up in the steel top outside of protecting a section of thick bamboo 40, splint mechanism 30 articulates the top of installing at splint platform 20, and be used for fixing a position the cylinder mould body 1, wherein, splint platform 20 adopts steel structure support, can the on-the-spot concatenation shaping, splint mechanism 30 includes the steel sheet that has the semicircular groove in the middle of two, the steel sheet is closing under the state, the centre has the anastomotic circular slot with cylinder mould body 1 outer wall, cylinder mould body 1 can pass the circular slot, and the last connecting piece 2 card through the upper end remains stably on splint mechanism 30.

Further, in order to facilitate splicing of the net cage bodies 1, the hoisting mechanism 10 is arranged above the steel protective cylinder 40 and used for hoisting the net cage bodies 1, the hoisting mechanism 10 utilizes an arc-shaped clamping jaw mechanism at the lower end to clamp the net cage bodies 1 from two sides and keep the suspension state of the net cage bodies 1 stable, when the net cage bodies 1 are placed downwards to the bottom, the lower connecting piece 3 is clamped with the upper connecting piece 2 at the upper end of the net cage body 1 on the clamping plate mechanism 30, the net cage bodies stop, then a worker holds the positioning drill rods 4 to penetrate through the lower connecting piece 3 and the upper connecting piece 2 from inside to outside, the head ends of the positioning drill rods 4 are located on the inner side of the first drill rod sleeves 23 and do not protrude out of the first drill rod sleeves 23, and the eight positioning drill rods 4 are sequentially and repeatedly installed, and fixing work between every two adjacent net cage bodies 1 is completed.

Fixing device of steel reinforcement cage

As shown in fig. 2, the lifting mechanism 50 includes a telescopic rod capable of longitudinally lifting in the pile hole, and the hydraulic push rod 60 is fixedly disposed at the bottom end of the telescopic rod and capable of horizontally extending and retracting in the pile hole along the radial direction, and is configured to press the positioning drill rod 4 mounted on the mesh cage body 1 from bottom to top in the pile hole to the hole wall along the radial direction, so as to limit the position of the mesh cage body 1 in the pile hole.

Wherein, the positioning drill rod 4 adopts a hot galvanizing stainless steel rod and has the characteristics of enhanced strength, difficult fracture of steel deformation and difficult corrosion.

Furthermore, in order to increase the longitudinal friction of the positioning drill rod 4 after it is inserted into the hole wall, the positioning drill rod 4 may be provided with a long flat shape, and the width may be used to increase the friction between the layers of the drawing, and the cross-sectional shapes of the first drill rod sleeve 23 and the second drill rod sleeve 32 may be changed accordingly.

So, after will fixing a position drill rod 4 and squeeze into the pore wall, the position relatively fixed of the holistic position of steel reinforcement cage and pore wall, in follow-up grout process, can not take place the condition of come-up or sinking, guarantee that the steel reinforcement cage is in the design position, do not need follow-up to adjust the steel reinforcement cage, avoid influencing the construction process because of factors such as steel reinforcement cage is crooked, come-up, sink.

[ METHOD OF USING A CONSTRUCTION DEVICE FOR A FILLED PILE REINFORCING-ROD CAGE

With reference to fig. 1 and 2, the apparatus for constructing a bored concrete pile reinforcement cage according to the above embodiment of the present invention includes:

s1, building a platform: the clamp plate table 20 is erected on the outer side of the top end of the clamp plate mechanism 30, the clamp plate mechanism 30 capable of overturning is hinged to the top of the clamp plate table 20, the clamp plate mechanism 30 can bear the net cage body 1 under the closed condition and release the net cage body 1 under the open and close condition, and the subsequent speed of splicing the net cage body 1 can be increased, the splicing difficulty is reduced and the operation is easier by erecting a platform bearing the net cage body 1;

s2, hoisting and splicing the net cage body 1: utilize hoisting machine structure 10 to hoist net cage body 1 and place fixedly on splint mechanism 30, hoist a net cage body 1 once more, make the lower connecting piece 3 of net cage body 1 lower extreme can aim at and block with the splint platform 20 of the net cage body 1 upper end on splint mechanism 30, by artifical installation location drill rod 4 after the block is accomplished, make two net cage bodies 1 spacing fixed, artifical and machine cooperation, the completion is to the concatenation of net cage body 1, and speed is faster relatively, and easy operation.

S3, manufacturing a reinforcement cage: repeating the above-mentioned operation, until the net cage body 1 that is located the lower extreme reaches pile hole bottom, making a plurality of net cage bodies 1 form the steel reinforcement cage, because the upper end of every steel reinforcement cage 1 all is equipped with connecting piece 2, the external diameter of going up connecting piece 2 and the interval between the pore wall are littleer, make the radial home range of net cage body 1 in the pile downthehole reduce, at the in-process of placing net cage body 1 downwards, be difficult to appear scraping wall and the skew condition.

And S4, fixing the steel reinforcement cage, driving a hydraulic push rod 60 to extend into the pile hole by utilizing a lifting mechanism 50, controlling the hydraulic push rod 60 to horizontally push the head end of the positioning drill rod 4 into the hole wall by a hydraulic device on the ground, and enabling the tail end of the hydraulic push rod to be still in the upper connecting piece 2 and the lower connecting piece 3 so as to relatively fix the positions of the steel reinforcement cage and the hole wall.

S5, grouting and pile forming: and pouring concrete into the pile hole to form a concrete pile body.

[ bored concrete pile ]

Combine the embodiment of the utility model provides a various bored concrete pile is still proposed, including the steel reinforcement cage that above-mentioned bored concrete pile steel reinforcement cage construction method made and pour the concrete pile body outside the steel reinforcement cage, so, the inside of pile body has the more stable steel reinforcement cage body of structure, makes the holistic intensity of pile body higher, and its outer wall has the location drill rod 4 that stretches into the pore wall, can make the pile body more stable in the intraformational position of soil, plays the effect of preventing subsiding.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is well known in the art and can be modified and decorated without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the claims.

Claims (11)

1. A bored concrete pile reinforcement cage construction equipment, includes:

the net cage body (1) comprises a plurality of longitudinal steel bars (11) and steel bar hoops (12) welded and fixed on the inner sides of the longitudinal steel bars (11), wherein the longitudinal steel bars (11) are distributed on the outer sides of the steel bar hoops (12) in a centrosymmetric manner;

the steel casing (40) is arranged at the top end of the pile hole, and the top end of the steel casing protrudes out of the ground;

the clamping plate table (20) is arranged on the outer side of the top end of the steel casing (40);

the clamping plate mechanism (30) is hinged to the top of the clamping plate table (20) and is used for positioning the net cage body (1);

the hoisting mechanism (10) is arranged above the steel casing (40) and used for hoisting the net cage body (1);

the upper connecting piece (2) is fixedly arranged on the outer side of the top of the net cage body (1), and the outer diameter of the upper connecting piece is equal to the inner diameter of the steel casing (40);

the lower connecting piece (3) is fixedly arranged on the inner side of the bottom of the net cage body (1);

the lifting mechanism (50) comprises a telescopic rod capable of longitudinally lifting in the pile hole;

a hydraulic push rod (60);

a positioning drill rod (4) is arranged between every two adjacent net cage bodies (1), and the positioning drill rod (4) penetrates through the lower connecting piece (3) and the upper connecting piece (2) from inside to outside and is used for fixing the two adjacent net cage bodies (1); the hydraulic push rod (60) is fixedly arranged at the bottom end of the telescopic rod, can horizontally stretch out and draw back in the pile hole along the radial direction, and is used for extruding the positioning drill rod (4) installed on the net cage body (1) to the hole wall from bottom to top in the pile hole along the radial direction so as to limit the position of the net cage body (1) in the pile hole.

2. A bored pile reinforcement cage construction device according to claim 1, wherein said upper connecting member (2) comprises an outer ring plate (21), a spacing ring (22) and a plurality of first shank sleeves (23), said outer ring plate (21) being welded to the outer walls of said plurality of longitudinal bars (11), said spacing ring (22) being located outside said outer ring plate (21) and concentrically arranged with said outer ring plate (21).

3. A bored pile reinforcement cage construction device according to claim 2, wherein the first plurality of rod sleeves (23) are arranged concentrically and symmetrically between the outer ring plate (21) and the cage (22), both ends of each of the first rod sleeves (23) are welded to the outer ring plate (21) and the cage (22), respectively, and both ends of each of the first rod sleeves (23) penetrate the outer ring plate (21) and the cage (22), respectively.

4. The bored pile reinforcement cage construction device according to claim 2, wherein the lower end of the outer ring plate (21) is folded inward to form a first limiting flap (211), the first limiting flap (211) has first steel bar pre-holes (201) along the circumferential side corresponding to each of the longitudinal steel bars (11), and the upper end surface of the first limiting flap (211) has first blind holes (212) corresponding to the number of the longitudinal steel bars (11).

5. A bored pile cage construction device according to claim 4, wherein said first blind hole (212) is located at a position intermediate between two adjacent first pre-formed holes (201).

6. A bored pile cage construction device according to claim 4, wherein said lower connecting member (3) comprises an inner ring plate (31) and a second shank sleeve (32), said inner ring plate (31) being welded and fixed to the inner walls of said longitudinal bars (11), said second shank sleeve (32) being welded and fixed to the inner side wall of said inner ring plate (31) and penetrating said inner ring plate (31).

7. The bored pile reinforcement cage construction device according to claim 6, wherein the upper end of the inner ring plate (31) is folded outward to form a second limiting flap plate (311), a second steel bar retaining hole (301) is formed in the second limiting flap plate (311) along the circumferential side corresponding to each of the longitudinal steel bars (11), and second blind holes (312) corresponding to the number of the longitudinal steel bars (11) are formed in the lower end surface of the second limiting flap plate (311).

8. A bored pile cage construction device according to claim 7, wherein said second blind hole (312) is located at a position intermediate between two adjacent second pre-formed holes (301).

9. A bored pile reinforcement cage construction device according to claim 8, wherein when the upper (2) and lower (3) connectors of two adjacent cages (1) are butted, the first (23) and second (32) drill rod sleeves on the corresponding sides are located on the same axis, and the ends of the longitudinal steel bars (11) are respectively engaged in the first (212) and second (312) blind holes.

10. A cast-in-place pile cage construction device as claimed in claim 7, characterised in that the internal diameter of the first shank sleeve (23) is equal to the internal diameter of the second shank sleeve (32).

11. A bored pile reinforcement cage construction device according to claim 1, wherein the adjacent two cage bodies (1) are horizontally rotated by an angle of half the angle between the adjacent two longitudinal bars (11) when they are spliced.

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