CN219599933U

CN219599933U - Tensioning device

Info

Publication number: CN219599933U
Application number: CN202222889027.3U
Authority: CN
Inventors: 杨仕玖; 张军; 苏强
Original assignee: Guizhou Changtong Group Intelligent Manufacturing Co ltd
Current assignee: Guizhou Changtong Group Intelligent Manufacturing Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-08-29
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to the technical field of prestressed concrete electric poles, in particular to a tensioning device, which comprises a hydraulic tensioning machine, a support frame, a pipe die and a die closing device, wherein a connecting structure is nested at one end of the hydraulic tensioning machine, the connecting structure is positioned below the support frame and fixedly connected with the support frame, a rotating wheel is fixedly connected with the other end of the hydraulic tensioning machine, the connecting structure and the pipe die are connected into a whole through the rotating wheel, a limiting structure is fixedly arranged at one end of the pipe die, the limiting structure is positioned at one end close to the connecting structure, a non-self-locking threaded shaft is fixedly connected at one end of the pipe die close to the connecting structure, a self-locking threaded shaft is arranged at one side of the connecting structure, and the self-locking threaded shaft and the non-self-locking threaded shaft are fixedly connected through a flange plate. In this patent technical scheme, can prevent through fixed cover and one-way bearing cooperation that the anchor spiro that screws from droing, hydraulic stretching machine and pipe die are kick-backed, cause potential safety hazard and pipe die reversal to the staff, destroy the problem of steel reinforcement cage prestressing force.

Description

Tensioning device

Technical Field

The utility model relates to the technical field of prestressed concrete electric poles, in particular to a tensioning device.

Background

The concrete electric pole is formed by pouring concrete and steel bars. The concrete pole has two kinds of ordinary reinforced concrete pole and prestressed concrete pole, when producing prestressed concrete pole, in order to increase the bending resistance, shear resistance, the tensile ability of precast concrete pole, need adopt stretching device to carry out prestressing force tensioning to the atress steel reinforcement cage of precast concrete pole.

The structure of the main function of the stretching of the steel bar is as follows: stretching machine, supporting frame, pipe die and die assembly. The method comprises the steps of installing a steel reinforcement cage in a pipe die, covering the pipe die with the steel reinforcement cage, fixing the whole formed by the pipe die and the die on a station, adjusting the position of a tensioning machine through a supporting frame, connecting the tensioning machine with one end of the steel reinforcement cage into a whole through the matching of a screwed anchoring spiral ring on a rotating shaft of the tensioning machine and a threaded shaft at one end of the pipe die, immediately starting the tensioning machine, limiting the tail end of the steel reinforcement cage in the die by the pipe die, horizontally moving one side of the tensioning shaft, stretching the steel reinforcement by pulling the front end of the steel reinforcement cage, driving the steel reinforcement cage to horizontally tension, and disconnecting the tensioning machine from the pipe die after reaching a required tensioning value, thereby completing tensioning work.

The technical defects in the prior art are that when tensioning work is carried out, a nut on a threaded shaft at the end part of a pipe die moves along with the movement of a tensioning shaft, so that the nut is gradually far away from the pipe die, the pipe die and the die can not be fixed in real time, once the steel bar is broken or a screwing anchoring spiral ring falls off during tensioning, when the pipe die and a hydraulic tensioning machine are subjected to reverse rebound due to inertia, the prestress of a steel bar cage in the pipe die is destroyed, and meanwhile, certain potential safety hazard is caused to field workers; secondly, the manual operation of a worker is needed when the screw-fastening spiral ring is screwed and fixed on the pipe die, and because four fixing rollers are wound around the screw-fastening spiral ring, the worker can only execute the screw-fastening operation through gaps between the fixing rollers, so that the working efficiency is greatly reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems that a pipe die and a die assembly cannot be fixed by nuts in real time, once steel bars are broken or a screwing anchoring spiral ring falls off during tensioning, the pipe die and a hydraulic tensioning machine can reverse rebound due to inertia to damage prestress of a steel reinforcement cage in the pipe die, and meanwhile, certain potential safety hazards are caused for on-site staff, and manual operation of a worker through gaps between fixing rollers is required when the pipe die is screwed and fixed by the screwing anchoring spiral ring, so that the working efficiency is greatly reduced are solved.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a tensioning device, including hydraulic stretching machine, the support frame, pipe die and compound die, hydraulic stretching machine's one end nestification has connection structure, connection structure is located the below and the support frame fixed connection of support frame, hydraulic stretching machine's the other end fixedly connected with runner, the runner can make connection structure and pipe die be connected as an organic wholely, pipe die's one end is fixed with limit structure, limit structure is located the one end that is close to connection structure, pipe die is close to connection structure's one end fixedly connected with auto-lock screw thread axle, auto-lock screw thread axle is located one side of connection structure and is equipped with auto-lock screw thread axle, auto-lock screw thread axle passes through ring flange fixed connection with auto-lock screw thread axle.

The working principle of the scheme is as follows:

after the steel reinforcement cage is installed in the pipe die, the die is covered, the limiting structure is nested on the non-self-locking threaded shaft and is fixed with the die, then the self-locking threaded shaft and the non-self-locking threaded shaft are connected through the flange plate, then the pipe die and the die are integrally fixed on a station, the positions of the connecting structure and the hydraulic tensioning machine are adjusted through the supporting frame, the tensioning machine and the connecting structure are aligned to the self-locking threaded shaft of the pipe die, the connecting structure and the self-locking threaded shaft are connected through rotating the rotating wheel in a threaded manner, and therefore the connecting structure and the pipe die are connected into a whole, and then the hydraulic tensioning machine is started to carry out tensioning work.

The beneficial effect that this scheme produced is:

1. and a limiting structure is arranged, the limiting structure is nested on the non-self-locking threaded shaft and is fixed with the mold closing, the non-self-locking threads are fixed with the self-locking threaded shaft, and the self-locking threads are in threaded connection with the connecting structure. The hydraulic tensioning machine stretches the steel reinforcement cage in the pipe die in a slight rotary advancing mode, when the self-locking threaded shaft is pulled by the hydraulic tensioning machine, as the limiting structure is fixed on the die, the helix angle of the non-self-locking threaded shaft is larger than 55 degrees, and the limiting structure only performs circular motion in situ when the non-self-locking threaded shaft moves towards one side of the tensioning machine, so that the pipe die and the die are fixed in real time, even if the steel reinforcement is broken or the screwing anchoring spiral ring falls off in the tensioning process, the pipe die and the tensioning machine cannot reverse rebound due to inertia, the prestress of the steel reinforcement cage in the pipe die is damaged, and the safety of field workers is ensured.

2. The setting runner, after stretch-draw machine and connection structure aim at auto-lock screw thread axle, can be light quick carry out threaded connection with connection structure and auto-lock screw thread axle through rotating the runner, need the workman through the gap manual operation between the fixed roll when having avoided screwing the anchor spiro to screw the fixed to the pipe die, effectually improved work efficiency.

Further, connection structure includes limiting plate, fixed roller and optical axis, and limiting plate and support frame fixed connection, and the middle part of limiting plate runs through there is the optical axis, and the one end and the hydraulic stretching machine fixed connection of optical axis can drive fixed axle, optical axis adjustment to the position that corresponds with the pipe die through the limiting plate, and the optical axis of being convenient for dock fast smoothly with the pipe die.

Further, limit structure is including fixed cover, fixed cover and pipe die fixed connection, and the inboard embedding in middle part of fixed cover is provided with one-way bearing, and fixed cover internal diameter size and one-way bearing external diameter size looks adaptation are convenient for one-way bearing's installation and dismantlement through fixed cover fixed one-way bearing, and when the anchor screw sleeve drops suddenly in the tensioning process, can effectually prevent not the self-locking screw thread axle through one-way bearing to take place to reverse resilience, destroy the prestressing force of steel reinforcement cage in the pipe die.

Further, the bottom of hydraulic stretching machine is fixed with the bottom plate, and four gyro wheels are distributed all around to the bottom of bottom plate, can guarantee stretching machine, support frame and connection structure horizontal migration through the gyro wheel for stretching machine, connection structure and pipe die remain all the time and form a horizontal horizontally straight line on a horizontal plane, have avoided the staff to stretch by an angle, have guaranteed stretch-draw work standard and have gone on, have improved the security of device.

Further, the other end of optical axis is fixed with the anchor spiral ring of screwing, and the one end of limiting plate is fixed with the fixed roller, and the one end of fixed roller is fixed with the baffle, screws anchor spiral ring and optical axis an organic whole and makes, mutually supports anchor spiral ring and auto-lock screw thread axle through screwing, under the effect of runner, can be quick fix stretch-draw machine and pipe die, easily accomplish the butt joint, can closely laminate with the compound die through the baffle, has improved the stability of stretching during operation.

Further, the spiral sleeve is fixed on the inner side of the middle part of the one-way bearing and is nested on the non-self-locking threaded shaft, the spiral angle of the spiral sleeve and the spiral angle of the non-self-locking threaded shaft are larger than 55 degrees, the spiral sleeve and the non-self-locking threaded shaft are matched to ensure that the pipe die is horizontally moved to one side of the tensioning machine in the stretching process, smooth tensioning work is ensured, meanwhile, the spiral sleeve cannot generate displacement along with the movement of the non-self-locking threaded shaft during movement, the pipe die and the die are fixed in real time under the action of the one-way bearing, the pipe die and the die are effectively ensured to be always integral, so that prestress of a reinforcement cage is not damaged, the yield is further ensured, and meanwhile, the production efficiency is improved.

Drawings

FIG. 1 is a top view of a tensioning device of the present utility model;

FIG. 2 is a front view of a tensioning device of the present utility model;

fig. 3 is a perspective view of a limiting structure of fig. 2 of a tensioning device according to the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include:

the hydraulic tensioning machine comprises a bottom plate 1, 101 idler wheels, a hydraulic tensioning machine 2, a supporting frame 3, a die clamping 4, a connecting structure 5, a limiting plate 501, a fixed roller 502, an optical axis 503, a screwing anchoring spiral ring 504, a baffle 505, a limiting structure 6, a fixed sleeve 601, a one-way bearing 602, a spiral sleeve 603, a pipe die 7, a self-locking threaded shaft 701, a non-self-locking threaded shaft 702 and a rotating wheel 8.

Embodiment one:

as shown in fig. 1, the direction shown in fig. 1 is taken as a reference direction, the leftmost side of the hydraulic stretching machine 2 is a hydraulic stretching machine 2, a rotary wheel 8 is arranged at the leftmost side of the hydraulic stretching machine 2, a supporting frame 3 is arranged on a peripheral fixing frame at the right end part of the hydraulic stretching machine 2, a connecting structure 5 below the inner side and the hydraulic stretching machine 2 are mainly fixed on the supporting frame 3, a bottom plate 1 is welded at the bottom of the supporting frame 3, rollers 101 are connected with two sides of the bottom long side of the bottom plate 1 in a shaft mode, a worker can conveniently push the bottom plate 1, the hydraulic stretching machine 2 and the supporting frame 3 integrally move to the right horizontally to a pipe die 7, the pipe die 7 on the right side is connected with the hydraulic stretching machine 2 through the connecting structure 5 to form a new integral, the integral formed by the pipe die 7 on the right side and the hydraulic stretching machine 2 is kept on a horizontal plane, so that the safety of stretching work is ensured.

As shown in fig. 2 and fig. 3, the connection structure 5 is rectangular with the direction shown in fig. 2 as a reference direction, and is formed by combining a limiting plate 501 fixedly connected with a supporting frame 3, four fixed rollers 502 welded with the limiting plate 501, a baffle 505 welded on the right side of the fixed rollers 502, an optical axis 503 fixed with a hydraulic tensioning machine 2 and a screwing anchoring spiral ring 504 integrally formed with the optical axis 503, wherein the optical axis 503 penetrates through the limiting plate 501 to be movably connected with the hydraulic tensioning machine 2, and when the baffle 505 is aligned with a fixed sleeve 601, a worker rotates the optical axis 503 through a rotating wheel 8 to drive the screwing anchoring spiral ring 504 to realize rotary butt joint with a self-locking threaded shaft 702. The right side of baffle 505 closely laminates there is limit structure 6, limit structure 6 is cyclic annular, limit structure 6 includes fixed cover 601, one-way bearing 602 and spiral cover 603, fixed cover 601 passes through the bolt fastening with pipe die 7, one-way bearing 602 embedding sets up in fixed cover 601, one-way bearing 602 and fixed cover 601 interference fit, spiral cover 603 embedding sets up in fixed cover 601, spiral cover 603 and one-way bearing 602 interference fit, spiral cover 603 nestification is on non-self-locking screw thread axle 702, spiral cover 603 is greater than 55 with the helix angle of non-self-locking screw thread axle 702, can guarantee through spiral cover 604 and the cooperation of non-self-locking screw thread axle 702 that the steel reinforcement cage is moved to the stretch-draw machine side by the in-process level.

As shown in fig. 2, the pipe die 7 is circular, a circular disk is integrally cast at the center of the pipe die 7 towards one end of the pipe die 7, the pipe die 7 is used for installing a reinforcement cage to limit the reinforcement cage in a die assembly, after the reinforcement cage is installed, a reinforcement head positioned at one side of a tensioning machine passes through the circular disk at the end of the pipe die 7, the reinforcement cage is limited by a pier head machine, so that the circular disk and the reinforcement cage are connected into a whole, the non-self-locking threaded shaft 702 is positioned at one end of the baffle 505 and is a circular flange, the self-locking thread 701 is positioned at one end of the non-self-locking threaded shaft 702 and is also a circular flange, the self-locking threaded shaft 701 is connected with the non-self-locking threaded shaft 702 through a flange, the threads of the self-locking threaded shaft 701 are matched with the screwed anchoring spiral ring 504, the optical axis 503 is moved towards the self-locking threaded shaft 701 side by rotating the rotating wheel 8, the anchoring spiral ring 504 is caused to be meshed with the self-locking threads 701, and the whole formed by the pipe die 7 and the die assembly 4 is connected with the hydraulic machine 2 to form a new whole tensioning machine.

The specific implementation process is as follows:

firstly, a worker firstly installs a reinforcement cage in a pipe die 7, then passes one end close to a tensioning machine through a disc with a non-self-locking threaded shaft 702, limits the reinforcement cage through a pier head machine, and fixes the reinforcement cage and the pipe die 7 to form a prestressed concrete pole inner core, then covers a die clamping 4 and fixes the reinforcement cage, then fixes the pipe die 4 and the die clamping 7 to form a whole on a corresponding station, simultaneously installs the self-locking threaded shaft 701 on the non-self-locking threaded shaft 702 in a flange connection mode, secondly, pushes a bottom plate 1, pushes a hydraulic tensioning machine 2, a supporting frame 3 and a connecting structure 5 which are right opposite to the pipe die 7 to the self-locking threaded shaft 701 to form a horizontal straight line as shown in the attached figure 1, at the moment, the worker rotates a rotating wheel 8, pushes an optical axis 503 and a screwing anchoring spiral ring to transversely and horizontally move towards the self-locking threaded shaft 701, the screwing anchoring spiral ring 504 is meshed with the self-locking thread 701, the whole formed by the pipe die 7 and the die clamping 4 is connected with the hydraulic tensioning machine 2 to form a new whole, finally, the hydraulic tensioning machine 2 is started, the steel reinforcement cage in the pipe die 7 is tensioned, the optical axis 503 pulls the pipe die 7 to move to one side of the hydraulic tensioning machine 2, after a specified pre-stress value is reached, the screwing anchoring spiral ring 504 is separated from the self-locking thread shaft 701 through the reverse rotation of the rotating wheel 8, and the spiral sleeve 604 cannot displace along with the movement of the non-self-locking thread shaft 702 in the stretching process due to the fact that the unidirectional bearing 602 is fixed, the pipe die 7 and the die clamping 4 are fixed in real time under the action of the unidirectional bearing 602, the fact that the pipe die 7 and the die clamping 4 are always a whole is effectively guaranteed, and after the tensioning is finished, the pipe die 7 and the die clamping 4 are directly transported to a pouring station integrally.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The utility model provides a tensioning device, includes hydraulic pressure stretch-draw machine (2), support frame (3), pipe die (7) and compound die (4), its characterized in that: the utility model discloses a hydraulic tensioning machine, including support frame (3), connection structure (5) are nested to the one end of hydraulic tensioning machine (2), connection structure (5) are located the below of support frame (3) and support frame (3) fixed connection, the other end fixedly connected with runner (8) of hydraulic tensioning machine (2), runner (8) can make connection structure (5) be connected as an organic wholely with pipe mould (7), pipe mould (7) are located the one end of connection structure (5) and are fixed with limit structure (6), the one end fixedly connected with that pipe mould (7) are close to connection structure (5) is not auto-lock screw thread axle (702), one side that is located connection structure (5) is equipped with auto-lock screw thread axle (701), auto-lock screw thread axle (701) and not auto-lock screw thread axle (702) pass through ring flange fixed connection.

2. A tensioning device according to claim 1, wherein: the connecting structure (5) comprises a limiting plate (501), a fixed roller (502) and an optical axis (503), wherein the limiting plate (501) is fixedly connected with the supporting frame (3), the optical axis (503) penetrates through the middle of the limiting plate (501), and one end of the optical axis (503) is fixedly connected with the hydraulic tensioning machine (2).

3. A tensioning device according to claim 1, wherein: the limiting structure (6) comprises a fixing sleeve (601), the fixing sleeve (601) is fixedly connected with the pipe die (7), and a one-way bearing (602) is embedded into the inner side of the middle of the fixing sleeve (601).

4. A tensioning device according to claim 1, wherein: the bottom of the hydraulic tensioning machine (2) is fixedly provided with a bottom plate (1), and four rollers (101) are distributed around the bottom of the bottom plate (1).

5. A tensioning device according to claim 2, wherein: the other end of the optical axis (503) is fixed with a screwing anchoring spiral ring (504), one end of the limiting plate (501) is fixed with a fixed roller (502), and one end of the fixed roller (502) is fixed with a baffle plate (505).

6. A tensioning device according to claim 3, wherein: a spiral sleeve (603) is fixed on the inner side of the middle of the unidirectional bearing (602), and the spiral sleeve (603) is nested on the non-self-locking threaded shaft (702).