CN108608569B

CN108608569B - Prestress tension tool

Info

Publication number: CN108608569B
Application number: CN201810548548.8A
Authority: CN
Inventors: 缪加胜; 何润; 李伟; 衡江
Original assignee: Chengdu Yinxian Telegraph Pole Co ltd
Current assignee: Chengdu Yinxian Telegraph Pole Co ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2021-05-04
Anticipated expiration: 2038-05-31
Also published as: CN108608569A

Abstract

The invention discloses a prestress tension tool, which comprises a stool leg disc and a tension disc; a puller head connected with the oil cylinder is arranged at the circle center of the stool foot disc; the oil cylinder is connected with a control system; the surface of the stool leg plate is provided with a plurality of grooves; a support column is movably arranged in the groove; the stretching plate is positioned between the support columns, and a limiting groove for clamping the limiting column is formed in the center of the stool leg plate; at least four jacking rods are arranged at the edge of the tensioning disc; and a plurality of heading pins are arranged on the surface of the tensioning disc adjacent to the stool foot disc. This device can be effectual is stretched the reinforcing bar in the pole, also is the pretension in the prestressing force construction.

Description

Prestress tension tool

Technical Field

The invention belongs to the technical field of electric pole preparation, and particularly relates to a prestress tension tool.

Background

In recent years, the development of electric power industry has become an important ring for determining the increase of national economy, and the electric pole is an electric bridge, so that electricity is transported to various places, along with the development of science and technology, the requirement on the electric pole is higher and higher, and frequent electric pole events arouse more and more attention of people.

The electric pole mainly divide into prestressing force pole and non-prestressing force pole and part prestressing force pole, and the prestressing force is constructed in order to save steel and reduce the structure dead weight and a building structure form that produces. The prestressed electric pole and the partial prestressed electric pole are characterized in that a part of compressive stress load is added to concrete before the load is used, so that a part of load can be offset after the load is added, and prestressed and partial prestressed components are mostly processed by high-strength steel bars, so that the steel consumption can be greatly saved, and the premature cracking of the components can be prevented.

However, when the existing prestressed and partially prestressed electric pole is manufactured, the existing prestressed electric pole is usually manufactured by adopting the pre-processed prestressed steel bars, and the steel bars filled into the electric pole cannot be subjected to prestressed stretching in the manufacturing process, so that the manufacturing efficiency is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the prestress tension tool which can effectively perform prestress tension on the reinforcing steel bar in the preparation process of the electric pole and effectively solve the problem of low preparation efficiency.

In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows:

a prestress tension tool comprises a stool leg plate and a tension plate; a puller head connected with the oil cylinder is arranged at the circle center of the stool foot disc; the oil cylinder is connected with a control system; the surface of the stool leg plate adjacent to the stretching plate is provided with a plurality of grooves; a support column is movably arranged in the groove;

the tensioning disc is positioned between the supporting columns, and a limiting groove for clamping the supporting columns is formed in the center of the tensioning disc; at least four jacking rods are arranged at the edge of the tensioning disc; and a plurality of heading pins are arranged on the surface of the tensioning disc adjacent to the stool foot disc.

Furthermore, one end of the piston column penetrates through the stool foot plate to be connected with the oil cylinder, and the outer edge of the end part of the other end is provided with a plurality of protruding blocks with gaps; the shape of the limiting groove is complementary with that of the limiting column.

Furthermore, a lug is arranged in the groove; the convex block is movably provided with a fixed block embedded in the groove; the support column is fixed on the fixing block, and a bolt for limiting is arranged on the fixing block.

Furthermore, a lifting ring is arranged at the top end of the tensioning disc.

Further, the control system is a PLC control system.

Further, the stool also comprises a bracket for supporting the stool foot plate; the top of the bracket is provided with a roller.

The invention has the beneficial effects that:

1. the reinforcing bar that will stretch in the pole preparation process need be fixed in upset head round pin department, then through in the spacing recess of the embedding of zipper head, and make it run through the stretch-draw dish, then it is rotatory under the drive of hydro-cylinder, the protruding piece that sets up on the protruding piece that makes its tip and the spacing recess block of contradicting each other, and make support column and pole mould shell contact each other, rethread hydro-cylinder drives zipper head and removes along the direction of keeping away from the pole mould, in order to reach the mesh of stretching the reinforcing bar, therefore, can realize reaching the tensile effect of 200 ~ 500 tons of power to the utmost.

2. This device can be after filling the concrete to steel reinforcement cage intussuseption, can be according to the different demands that different poles will satisfy, carries out the prestressing force tensile to the reinforcing bar in it, and traditional mode production pole needs 8 ~ 9h, is adopting this device to carry out the pole preparation back, only needs 3 ~ 4h can accomplish the production of a pole, has shortened the preparation time of pole greatly, the effectual preparation efficiency that has promoted the pole.

3. Through set up the gyro wheel in the device bottom, mobile device that can be convenient promotes preparation efficiency.

Drawings

FIG. 1 is a schematic structural view of the apparatus;

FIG. 2 is a top view of the bench footrest;

FIG. 3 is a perspective view of the tension disc;

FIG. 4 is a schematic structural diagram of a groove;

FIG. 5 is a schematic structural view of a fixing block;

FIG. 6 is a schematic view of the structure of the tension head;

figure 7 is a schematic view of the structure of the upset pin.

Wherein, 1, a stool foot plate; 2; stretching the disc; 21. a limiting groove; 22. a jacking rod; 23. a heading pin; 24. a hoisting ring; 25. passing through a hole in the steel bar; 3. a support pillar; 4. a piston post; 41. opening a pull head; 5. a groove; 51. a bump; 6. a fixed block; 61. a bolt; 7. an oil cylinder; 8. and a roller.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.

As shown in fig. 1, the prestress tension tool comprises a stool leg plate 1 and a tension plate 2, wherein the stool leg plate 1 and the tension plate 2 are used in a matched mode, a hanging ring 24 is arranged at the top of the tension plate, a support used for supporting the stool leg plate 1 is arranged below the stool leg plate 1, a plurality of rollers 8 are arranged at the bottom of the support, and the rollers 8 are preferably 4 in number and are convenient to carry equipment.

As shown in fig. 1, a through hole is formed in the center of the stool leg tray 1, a freely telescopic piston column 4 is arranged in the through hole, an oil cylinder 7 connected with the piston column 4 is arranged on the stool leg tray 1, the oil cylinder 7 is connected with a control system, and the control system is preferably a PLC control system; so that the piston column 4 can rotate for a certain angle under the driving of the oil cylinder 7 and can move telescopically in the axial direction.

As shown in fig. 2, four grooves 5 are formed in the stool leg plate 1 adjacent to the tension plate 2, the grooves 5 are separated from the piston column 4 by a gap, and one end of each groove 5 adjacent to the piston column 4 is U-shaped.

As shown in fig. 2, 4 and 5, a projection 51 having the same shape as the recess 5 is provided in the recess 5, a fixing block 6 which is inserted into the recess 5 and can freely slide in the recess 5 is provided on the projection 51, a support column 3 which surrounds the piston column 4 is fixed on the fixing block 6, and the fixing block 6 is locked and separated from the projection 51 by a bolt 61 provided thereon.

As shown in fig. 2 and 6, one end of the piston column 4 passes through the stool leg plate 1 to be connected with the oil cylinder 7, the outer edge of the end part of the other end is provided with a plurality of protruding blocks with gaps, preferably, the number of the protruding blocks is four, and then the piston column is driven by the oil cylinder 7 to move in the axial direction, is embedded into the tension plate, and performs prestress stretching operation on the steel bars.

As shown in fig. 3, the central portion of the disk center of the tension disk 2 is provided with a limiting groove 21, the shape of the limiting groove 21 is complementary to the shape of the tension head 41, i.e. the side wall of the limiting groove 21 is also provided with four protruding blocks with gaps, and the size of the protruding blocks and the distance of the gaps between the protruding blocks are consistent with the parameters on the limiting post 4, therefore, the protruding blocks of the limiting groove 21 can just form a complete circle together with the protruding blocks arranged on the limiting post 4.

As shown in fig. 3, four corners of the tension disc 2 are provided with jacking rods 22, and then the disc surface of the tension disc 2 adjacent to the stool leg disc 1 is provided with a plurality of heading pins 23 provided with steel bar through holes 25.

When the steel bar filled with concrete needs to be subjected to prestress stretching, firstly, a steel bar cage is placed in a mold for preparing an electric pole, then the concrete is filled, then the end part of the steel bar in the steel bar cage is placed in a steel bar through hole 25 and fixed, and then the top screw rod 22 is rotated to enable the end part to be contacted with the end surface of the mold, so that the stability of the tensioning disc 2 can be ensured, and the steel bar can be subjected to preliminary prestress rope stretching;

moving the stool leg plate 1 again to enable the tensioning head 41 to be embedded into and penetrate through the limiting groove 21, then enabling the tensioning head 41 to rotate under the driving of the oil cylinder 7, enabling the convex block on the tensioning head 41 to be overlapped with the convex block in the limiting groove 21, then adjusting the position of the supporting column 3 through the bolt 61 to enable the end part of the supporting column 3 to be in contact with the end surface of the mold, and then driving the tensioning head 41 to move in the direction away from the electric pole mold through the oil cylinder 7 under the adjustment of the control system to achieve the purpose of carrying out prestress treatment on the reinforcing steel bars; simultaneously, the tensile size that different poles of accessible control system regulation carry out prestressing force drawing needs satisfies different production needs to can effectual promotion production rate.

Claims

1. A prestress tension tool is characterized by comprising a stool leg plate (1) and a tension plate (2); a piston column (4) connected with an oil cylinder (7) is arranged at the circle center of the stool foot plate (1); the oil cylinder (7) is connected with a control system; one end of the piston column (4) passes through the stool foot plate (1) to be connected with the oil cylinder (7), and the other end is provided with a tensioning head (41); the surface of the stool leg plate (1) adjacent to the stretching plate (2) is provided with a plurality of grooves (5); a support pillar (3) is movably arranged in the groove (5);

a lug (51) is arranged in the groove (5); the bump (51) is movably provided with a fixed block (6) embedded in the groove (5); the supporting column (3) is fixed on the fixing block (6), and a bolt (61) for limiting is arranged on the fixing block (6); the bolt (61) can adjust the position of the supporting column (3) to enable the end part of the supporting column (3) to be in mutual contact with the end surface of the die;

the tensioning disc (2) is positioned between the support columns (3), and a limiting groove (21) for clamping a tensioning head (41) is formed in the circle center of the tensioning disc (2); at least four jacking rods (22) are arranged at the edge of the tensioning disc (2); when the top screw rod (22) is rotated, the end part of the top screw rod can be contacted with the end surface of the die; and the surface of the tension disc (2) adjacent to the stool foot disc (1) is provided with a plurality of heading pins (23) provided with steel bar through holes (25);

the outer edge of the tensioning head (41) is provided with a plurality of protruding blocks with gaps, the shapes of the protruding blocks are complementary with those of the limiting grooves (21), so that the protruding blocks on the tensioning head (41) can be overlapped with the protruding blocks on the limiting grooves (21) after penetrating through the limiting grooves (21).

2. The pre-stress tension tool according to claim 1, characterized in that a hanging ring (24) is arranged at the top end of the tension disc (2).

3. The pre-stressed tension tool according to claim 1, wherein the control system is a PLC control system.

4. The prestress tension tool according to claim 1, further comprising a bracket for supporting the stool leg plate (1); and the bottom of the bracket is provided with a roller (8).