CN211547368U

CN211547368U - Device for drawing prestressed reinforcement in corrugated pipe

Info

Publication number: CN211547368U
Application number: CN201921898384.8U
Authority: CN
Inventors: 王小鹏; 张妙芝; 杨凯; 李姣姣; 崔鹏程; 党展鹏
Original assignee: Shaanxi Railway Institute
Current assignee: Shaanxi Railway Institute
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-09-22
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses a device for drawing prestressed reinforcement in a corrugated pipe, which comprises a first barrel and a second barrel integrally formed with the first barrel, wherein the second barrel is positioned at one end of the first barrel, the other end of the first barrel is provided with at least two drawing holes on the barrel wall, the surface layer of the first barrel is provided with a polytetrafluoroethylene coating, the inside of the second barrel is provided with a reinforcement penetrating hole along the axial direction of the first barrel, the inside of one end of the first barrel is provided with an anchoring limiting plate capable of freely sliding along the inside of the first barrel, the other end of the first barrel is provided with an anchoring plate clamped on the barrel wall of the first barrel, and the anchoring plate and the anchoring limiting plate are both provided with a plurality of anchoring clamping sheets; the utility model relates to a device of drawing prestressing steel in bellows can not take place alternately and block the phenomenon when drawing prestressing steel, has saved welding and cutting prestressing steel process simultaneously, reaches the purpose of practicing thrift cost and environmental protection.

Description

Device for drawing prestressed reinforcement in corrugated pipe

Technical Field

The utility model belongs to the technical field of post-tensioned prestressing bridge engineering construction, concretely relates to pull device of prestressing steel in bellows.

Background

The occurrence of the prestressed reinforcement increases the span of the bridge, lightens the self weight and is widely applied. Because the construction method and the structure of the bridge are different, the prestressed reinforcement is arranged in the beam body in a straight line mode, a broken line mode and a curve mode, and in the bridge construction, reinforcement penetrating and prestressed reinforcement tensioning are usually carried out in the reserved corrugated pipe after concrete pouring. The method adopted at the construction site at present is as follows: the method comprises the following steps of welding a plurality of strands of prestressed reinforcements together, welding a thin steel wire at the end part of the prestressed reinforcements, and drawing the prestressed reinforcements in the corrugated pipe through the thin steel wire, wherein the problems that the internal prestressed reinforcements in one method are crossed, the welding joint part in the drawing process is easily clamped in the corrugated pipe, the corrugated pipe is easily damaged to cause subsequent construction slurry leakage, the prestressed reinforcements are damaged by the welding in the third method, and the prestressed reinforcements are wasted by cutting the prestressed reinforcements after the drawing is finished are solved; in conclusion, the existing problems of crossing and blocking phenomena during the traction of prestressed reinforcements and waste caused by cutting the prestressed reinforcements exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pull device of prestressing steel in bellows has solved and has had alternately and block the phenomenon when pulling prestressing steel at present to and because the cutting prestressing steel brings extravagant problem.

The technical proposal adopted by the utility model is that,

the utility model provides a pull device of prestressing steel in bellows, including first barrel and with first barrel integrated into one piece's second barrel, the second barrel is located the one end of first barrel, the other end of first barrel sets up two at least traction holes on section of thick bamboo wall, the top layer of first barrel is provided with the polytetrafluoroethylene coating, the inside of second barrel has been seted up along the axial of first barrel and has been worn the muscle hole, the inside anchor limiting plate that can follow the interior free slip of first barrel that is provided with of one end of first barrel, the other end of first barrel is provided with the anchor board of joint in first barrel wall, all be provided with a plurality of anchor clamping piece on anchor board and the anchor limiting plate.

The utility model is also characterized in that,

the first cylinder body is of a thin-wall hollow cylindrical structure, the second cylinder body is of a thin-wall hollow circular truncated cone structure, and the bottom of the thin-wall hollow circular truncated cone structure and the first cylinder body are integrally formed.

The bar penetrating hole is formed by connecting a plurality of semicircular arcs.

The traction holes are four in number and used for traction of the first barrel, the anchor plates correspond to the limiting holes of the anchor limiting plates and are provided with five anchor plate anchor holes, and the anchor plate anchor holes are used for anchoring steel bars to be dragged.

The anchor plate body is of a cylinder structure, the radial size of the cylinder structure is larger than the inner diameter of the first cylinder and smaller than the outer diameter of the first cylinder, and the cylinder wall of the anchor plate is clamped on the cylinder wall of the first cylinder.

The anchor limiting plate is of a cylindrical structure, the inside of the anchor limiting plate is provided with limiting holes, the limiting holes are formed by five semicircular arcs, the limiting holes are used for limiting the position of a steel bar to be pulled, ten anchor holes are formed in the periphery of the limiting holes along the axial direction of the anchor limiting plate and are located on the periphery of the limiting holes, the anchor holes are used for anchoring the steel bar to be pulled, and the radial dimension of the anchor limiting plate is larger than the bottom radius of the second barrel and smaller than the inner diameter of the first barrel.

The anchoring clamping piece comprises an anchoring upper clamping piece and an anchoring lower clamping piece, and the anchoring upper clamping piece and the anchoring lower clamping piece are arranged on the inner wall of the anchoring hole relatively.

The beneficial effects of the utility model are that, the utility model relates to a device of drawing prestressed reinforcement in bellows can not take place alternately and block the phenomenon when drawing prestressed reinforcement, has saved welding and cutting prestressed reinforcement process simultaneously, reaches the purpose of practicing thrift cost and environmental protection.

Drawings

Fig. 1 is a schematic longitudinal sectional view of a device for pulling prestressed reinforcement in corrugated pipes according to the present invention;

fig. 2 is a right side view of the apparatus of the present invention for pulling prestressed reinforcement in corrugated tubing;

fig. 3 is a left side view of a device of the present invention for pulling prestressed reinforcement in corrugated tubing;

FIG. 4 is a schematic view of the anchoring and limiting plate in the device for pulling prestressed reinforcement in corrugated pipe

Fig. 5 is a schematic view of the center device anchoring clip assembly of the device for pulling prestressed reinforcement in corrugated tubing of the present invention.

In the figure, 1 a first cylinder, 2 a second cylinder, 3 a traction hole, 4 a polytetrafluoroethylene coating, 5 a rib penetrating hole, 6 an anchoring limiting plate, 6-1 a limiting hole, 6-2 an anchoring hole, 7 an anchoring plate, 7-1 an anchoring plate anchoring hole, 8 an anchoring clamping piece, 8-1 an anchoring upper clamping piece and 8-2 an anchoring lower clamping piece.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a device for drawing prestressed reinforcement in corrugated pipe, including first barrel 1 and with first barrel 1 integrated into one piece's second barrel 2, second barrel 2 is located the one end of first barrel 1, the other end of first barrel 1 is located and sets up two at least traction holes 3 on the section of thick bamboo wall, the top layer of first barrel 1 is provided with polytetrafluoroethylene coating 4, the inside of second barrel 2 has seted up muscle hole 5 along the axial of first barrel 1, the inside anchor limiting plate 6 that can follow first barrel 1 internal free slip that is provided with of one end of first barrel 1, the other end of first barrel 1 is provided with the anchor board 7 of joint in first barrel 1 section of thick bamboo wall, all be provided with a plurality of anchor clamping piece 8 on anchor board 7 and the anchor limiting plate 6.

Further, the first cylinder 1 is of a thin-wall hollow cylindrical structure, the second cylinder 2 is of a thin-wall hollow circular truncated cone structure, and the bottom of the thin-wall hollow circular truncated cone structure and the first cylinder 1 are integrally formed.

Further, as shown in fig. 2, the tendon passing hole 5 is formed by connecting a plurality of semicircular arcs.

Further, as shown in fig. 3, four traction holes 3 are provided, the traction holes 3 are used for traction of the first cylinder 1, five anchoring plate anchoring holes 7-1 are provided on the anchoring plate 7 corresponding to the anchoring limiting plate limiting hole, and the anchoring plate anchoring holes 7-1 are used for anchoring the steel bar to be dragged.

Further, the body of the anchoring plate 7 is of a cylindrical structure, the radial size of the cylindrical structure is larger than the inner diameter of the first cylinder 1 and smaller than the outer diameter of the first cylinder 1, and the cylinder wall of the anchoring plate 7 is clamped on the cylinder wall of the first cylinder 1.

Further, as shown in fig. 4, the anchoring limiting plate 6 is of a cylindrical structure, the anchoring limiting plate 6 is provided with a limiting hole 6-1 inside, the limiting hole 6-1 is a hole formed by five semicircular arcs, the limiting hole 6-1 is used for limiting the position of the steel bar to be pulled, ten anchoring holes 6-2 are arranged on the anchoring limiting plate 6 along the axial direction and on the periphery of the limiting hole 6-1, the anchoring holes 6-2 are used for anchoring the steel bar to be pulled, and the radial dimension of the anchoring limiting plate 6 is larger than the bottom radius of the second cylinder 2 and smaller than the inner diameter of the first cylinder 1.

Further, as shown in fig. 5, the anchoring clip 8 includes an anchoring upper clip 8-1 and an anchoring lower clip 8-2, and the anchoring upper clip 8-1 and the anchoring lower clip 8-2 are oppositely disposed on the inner wall of the anchoring hole 6-2.

The utility model relates to a pull prestressed reinforcement's device's theory of operation in the bellows does: semicircular limiting holes are formed in the through-beam opening 5 and the anchoring limiting plate 6 in a layered and partitioned mode, so that the prestressed steel bars are prevented from crossing in the traction process, and meanwhile, the whole device can be effectively reduced in height by respectively anchoring on the anchoring plate and the anchoring limiting plate, and is easy to pull in the corrugated pipe; the tetrafluoroethylene coating 4 is arranged on the outer side of the first cylinder 1, the friction coefficient of the tetrafluoroethylene coating with the corrugated pipe is 0.015-0.065, and the blocking phenomenon in the process of drawing the prestressed reinforcement is avoided; the whole device is convenient to disassemble, can effectively avoid cutting prestressed reinforcements, and achieves the purposes of saving materials and protecting environment.

The utility model relates to a pull prestressing steel's device's in bellows working process specifically does: firstly, all prestressed reinforcements penetrate into the end part of the device from the reinforcement penetrating hole 5, the outer prestressed reinforcements are fixed through the bundle penetrating hole 5, then the anchoring limiting plate 6 is installed, the inner prestressed reinforcements are fixed through the limiting holes 6-1, meanwhile, the outer prestressed reinforcements are anchored on the anchoring holes 6-2 through the anchoring clamping pieces 8, the anchoring limiting plate 6 slides into the bottom of the first barrel 1 by drawing the outer prestressed reinforcements to be closely attached to the bottom of the circular table of the second barrel, then the anchoring plate 7 is installed, the outer prestressed reinforcements are anchored on the anchoring plate anchoring holes 7-1 through the anchoring clamping pieces 8, and finally the whole device is drawn into the corrugated pipe through the drawing hole 3 to carry out bundle penetrating work. Therefore, do the utility model relates to a draw the working process of prestressed reinforcement's device in the bellows.

The utility model relates to a pull device of prestressing steel in bellows, through scribbling one deck polytetrafluoroethylene coating on the top layer simultaneously, solve the card of pulling the prestressing force in-process and hinder the phenomenon, set up the hole of wearing the muscle in spacing hole of area in the inside of hollow round platform structure of thin wall, lay the anchor limiting plate of taking spacing hole in thin wall hollow cylinder, install the anchor board at thin wall hollow cylinder structure tip, all can come the interim fixed prestressing steel through the installation anchor clamp piece on anchor limiting plate and anchor board simultaneously, prevent that prestressing steel's is alternately at the traction in-process, the anchor can effectively reduce the height of whole device simultaneously on two boards, easily pull in the bellows, effectively avoid cutting prestressing steel, play the effect of material saving and environmental protection. Has certain practicability and practical significance.

Claims

1. A device for drawing prestressed reinforcement in a corrugated pipe is characterized by comprising a first cylinder body (1) and a second cylinder body (2) which is integrally formed with the first cylinder body (1), the second cylinder (2) is positioned at one end of the first cylinder (1), the other end of the first cylinder (1) is provided with at least two traction holes (3) on the cylinder wall, the surface layer of the first cylinder body (1) is provided with a polytetrafluoroethylene coating (4), the inside of the second cylinder body (2) is provided with a rib penetrating hole (5) along the axial direction of the first cylinder body (1), an anchoring limit plate (6) which can freely slide along the inside of the first cylinder body (1) is arranged inside one end of the first cylinder body (1), the other end of the first cylinder (1) is provided with an anchoring plate (7) clamped on the cylinder wall of the first cylinder (1), and the anchoring plate (7) and the anchoring limiting plate (6) are respectively provided with a plurality of anchoring clamping pieces (8).

2. The device for pulling prestressed reinforcement in corrugated pipe as set forth in claim 1, wherein said first cylinder (1) is a thin-walled hollow cylindrical structure, said second cylinder (2) is a thin-walled hollow circular truncated cone structure, and the bottom of said thin-walled hollow circular truncated cone structure is integrally formed with said first cylinder (1).

3. A device for pulling prestressed reinforcement in corrugated pipes, according to claim 1, characterized in that said holes (5) are provided as a plurality of semi-circular holes.

4. A device for pulling prestressed reinforcement in corrugated pipes, according to claim 1, characterized in that said pulling holes (3) are provided in four, said pulling holes (3) are used for pulling the first cylinder (1), said anchoring plate (7) is provided with five anchoring plate anchoring holes (7-1) corresponding to the anchoring limit plate, said anchoring plate anchoring holes (7-1) are used for anchoring the reinforcement to be pulled.

5. The device for pulling prestressed reinforcement in corrugated pipe as recited in claim 4, wherein the body of the anchoring plate (7) is a cylindrical structure, the radial dimension of the cylindrical structure is larger than the inner diameter of the first cylinder (1) and smaller than the outer diameter of the first cylinder (1), and the wall of the anchoring plate (7) is clamped on the wall of the first cylinder (1).

6. The device for pulling the prestressed reinforcement in the corrugated pipe as claimed in claim 1, wherein the anchoring limiting plate (6) is a cylindrical structure, the anchoring limiting plate (6) is internally provided with a limiting hole (6-1), the limiting hole (6-1) is formed by five semicircular arcs, the limiting hole (6-1) is used for limiting the position of the reinforcement to be pulled, ten anchoring holes (6-2) are arranged on the anchoring limiting plate (6) along the axial direction of the anchoring limiting plate and at the periphery of the limiting hole (6-1), the anchoring holes (6-2) are used for anchoring the reinforcement to be pulled, and the radial dimension of the anchoring limiting plate (6) is greater than the bottom radius of the second cylinder (2) and smaller than the inner diameter of the first cylinder (1).

7. A device for pulling prestressed reinforcement in corrugated pipes, according to claim 1, characterized in that said anchoring jaws (8) comprise an upper anchoring jaw (8-1) and a lower anchoring jaw (8-2), said upper anchoring jaw (8-1) and said lower anchoring jaw (8-2) being arranged opposite to each other on the inner wall of said anchoring hole (6-2).