CN215614725U

CN215614725U - Steel strand fixing, extracting and cutting device

Info

Publication number: CN215614725U
Application number: CN202122081232.2U
Authority: CN
Inventors: 银山; 姜飞; 牛建发; 金志强; 郭枫; 李世海; 孙凯; 何松; 冯鹏飞; 张庆伟
Original assignee: China Railway Third Engineering Group Third Engineering Co ltd; China Railway No 3 Engineering Group Co Ltd
Current assignee: China Railway Third Engineering Group Third Engineering Co ltd; China Railway No 3 Engineering Group Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-25
Anticipated expiration: 2031-08-31

Abstract

The utility model belongs to the technical field of prefabrication of box girders in bridge engineering and solves the problems that an existing pay-off device is prone to toppling in a wire drawing process and a cutting device is not integrated. The utility model provides a fixed extraction of steel strand wires and cutting device, steel bar welded cuboid frame, frame upper end opening, the sleeper has all been laid to the top at both ends about the frame bottom reinforcing bar, one side that is close to the case roof beam of frame is fixed with a line outgoing section of thick bamboo and cutting machine support, the last axis of ordinates that has two outside extensions of cutting machine support, wherein, it is connected with the cutting machine to rotate on the axis of ordinates that is close to a line outgoing section of thick bamboo, the steel strand wires of a line outgoing section of thick bamboo exit end is in the cutting range of cutting machine, the cutting machine can support and lean on the axis of ordinates of keeping away from a line outgoing section of thick bamboo. The steel strand cutting device is firmly placed in the steel strand extraction process, and can synchronously realize the cutting of the steel strand.

Description

Steel strand fixing, extracting and cutting device

Technical Field

The utility model belongs to the technical field of prefabrication of box girders in bridge engineering, and particularly relates to a steel strand fixing, extracting and cutting device.

Background

The prefabrication of the box girder is a key and difficult point in bridge engineering, and whether the prefabrication process of the box girder ensures the safety, progress and quality requirements directly influences the smooth implementation of the whole project.

In the box girder prefabricating process, due to the fact that post-tensioning construction is adopted, time and labor are wasted when steel strands are threaded in the corrugated pipe, the used steel strands are long and have large dead weight, common materials are used in a bundle, 6-7 steel strands need to be threaded in a single corrugated pipe, the steel strands are easy to tie in the corrugated pipe or damage the corrugated pipe when the traditional method for manually threading the steel strands is not operated properly, the phenomenon that the steel strands are broken, stress is not enough to be controlled, even a girder body is damaged is caused in the subsequent tensioning construction, and the efficiency is low.

Box beam construction often adopts the steel strand to coil and carries out the prestressing force steel strand unwrapping wire, but the manual unwrapping wire is in essence just utilizing the manual work to straighten and put into the bellows with the steel strand that originally crooked, and the steel strand can produce the elasticity that resumes crooked original-pack in straightening in-process, leads to the operational difficulties, brings the potential safety hazard to personnel around after the steel strand launches, in addition the unwrapping wire in-process because the steel strand coils the fixed unstability and still can appear coiling and roll, leads to the steel strand intertwine, can't the unwrapping wire.

Through retrieval, the patent with the Chinese patent publication number of CN203582134U discloses a prestressed steel strand pay-off device, which comprises a frame with a cubic structure and a conical pay-off protection cylinder, wherein the pay-off protection cylinder is fixedly arranged on the front surface of the frame, the pay-off protection cylinder comprises circular rings with decreasing radiuses from inside to outside and coaxially arranged at equal intervals and straight rods connected with the fixed circular rings, the straight rods are distributed around the axis of the circular rings in a central symmetry manner, and the inner sides of the straight rods are welded and fixed on the frame.

This patent has been solved and has popped out in the unwrapping wire in-process steel strand wires work progress and cause the injury to the people, and the steel strand wires intertwine leads to the problem of unable unwrapping wire, but because the steel strand wires dead weight of bundling is great, and the later stage is along with front side steel strand wires are less gradually, bundle steel strand wires may be to a lopsidedness, cause frame construction's collapse easily, there is serious potential safety hazard, and when cutting off steel strand wires, need be with the handheld operation of small-size cutting machine, the workman is and after the operation cutting, can place small-size cutting machine at will sometimes, there is certain potential safety hazard.

Therefore, a device which is firmly placed and can synchronously realize the extraction and cutting of the steel strand needs to be researched.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that the existing pay-off device is easy to topple in the wire drawing process and a cutting device is not integrated, and provides a steel strand fixing, drawing and cutting device.

In order to achieve the purpose, the utility model adopts the following technical scheme that a steel strand fixing, extracting and cutting device comprises a rectangular frame welded by steel bars, the upper end of the frame is open, sleepers are paved above the left end and the right end of the steel bars at the bottom of the frame, a wire outlet cylinder and a cutting machine support are fixed on one side of the frame close to a box girder, two longitudinal shafts extending outwards are arranged on the cutting machine support, a cutting machine is rotatably connected to the longitudinal shaft close to the wire outlet cylinder, the steel strands at the outlet end of the wire outlet cylinder are in the cutting range of the cutting machine, and the cutting machine can abut against the longitudinal shaft far away from the wire outlet cylinder.

Preferably, the cutting machine support comprises a cross rod connected to the frame, the two longitudinal shafts are fixed on the cross rod at intervals, a connecting rod is fixed on the shell of the cutting machine, and a circular ring matched with the longitudinal shaft close to the outlet cylinder is fixed at the tail end of the connecting rod.

Preferably, the cutter holder is disposed obliquely below the outlet tube.

Preferably, the outlet cylinder is in a circular truncated cone shape with the diameter gradually reduced from inside to outside, and comprises a large circular ring fixed on the frame, a coaxial small circular ring is arranged in front of the large circular ring, and the large circular ring and the small circular ring are welded through a steel bar.

Preferably, the small circular ring is welded with a circular plate which is the same as the small circular ring, a wire outlet pipe is fixed at the front end of the circular plate, a through hole is formed in the position, corresponding to the inner hole of the wire outlet pipe, of the circular plate, and the rotary cutting surface of the cutting machine is located on the outer side of the wire outlet pipe.

Preferably, a protective shed is arranged above the frame, the horizontal projection of the protective shed covers the frame and the wire outlet cylinder, and a hoisting ring is arranged at the top end of the protective shed.

Preferably, the side of the frame close to the box girder and the side far away from the box girder are both provided with a pulling cable.

Preferably, one side of the frame close to the box girder and one side of the frame far away from the box girder are both in a nine-grid shape connected by steel bars, and the middle parts of the two side surfaces of the frame are both provided with two protective steel bars for preventing the steel strands from sliding down.

Preferably, both ends of the sleeper extend out of the frame, the bundle of steel strands is vertically arranged on the sleeper in the frame, a gap is reserved between the lower end of each steel strand and the ground, and the sleeper is soaked in oil.

Compared with the prior art, the utility model provides a steel strand fixing, extracting and cutting device which has the following beneficial effects:

1. according to the utility model, the sleeper soaked in oil is laid on the upper bottom surface of the frame, so that the risk that the device is easy to topple in the process of extracting the steel strand is effectively avoided;

2. the cutting machine is rotatably arranged on the frame, so that the potential safety hazard problem that a cutting blade hurts a person due to the fact that the cutting machine is randomly placed after being operated by a worker is solved;

3. the side of the frame close to the box girder and the side far away from the box girder are both provided with the inhaul cables, so that the frame is further prevented from toppling;

4. the utility model improves the construction efficiency of the steel strand penetrating in the corrugated pipe, accelerates the construction progress and ensures the construction safety.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a front view of the present embodiment without the cutter and the cable installed;

FIG. 2 is a schematic view of the present embodiment when the cutting machine is not installed;

FIG. 3 is a top view of the cutter carriage of this embodiment;

FIG. 4 is a rough view of the cutter in this embodiment when it is set;

fig. 5 is a view showing the state in which the cutter cuts the steel strand in the present embodiment.

In the figure: 1-a frame; 2-sleeper; 3-an outlet cylinder; 3.1-big circular ring; 3.2-small ring; 4-a cutter holder; 4.1-longitudinal axis; 4.2-cross bar; 5-a cutting machine; 5.1-connecting rod; 5.2-collar; 6-circular plate; 7-a wire outlet pipe; 8-a protective shed; 8.1-hoisting ring; 9-a pull cable; 10-box beam, 11-steel strand.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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 present invention provides an embodiment:

as shown in fig. 1 and 2, a steel strand fixing, extracting and cutting device, a steel bar welded cuboid frame 1, an upper end of the frame 1 is open, sleepers 2 are laid above left and right ends of a steel bar at the bottom of the frame 1, one side of the frame 1, which is close to a box girder 10, is fixed with a wire outlet cylinder 3 and a cutting machine support 4, the cutting machine support 4 is provided with two longitudinal shafts 4.1 extending outwards, wherein a cutting machine 5 is rotatably connected to the longitudinal shaft 4.1, which is close to the wire outlet cylinder 3, a steel strand 11 at an outlet end of the wire outlet cylinder 3 is arranged in a rotating cutting surface of the cutting machine 5, and the cutting machine 5 can abut against the longitudinal shaft 4.1 far away from the wire outlet cylinder 3.

In this embodiment, one side of the frame 1 close to the box girder 10 and one side of the frame 1 far from the box girder 10 are all in a nine-grid shape with steel bar connection, the middle parts of two side surfaces of the frame 1 are both provided with two protective steel bars for preventing steel strands from sliding off, the frame 1 is used for fixing the position of the bundled steel strands 11 and preventing the bundled steel strands from moving left and right or inclining front and back, the self weight of the bundled steel strands is large, about 3.4 tons, no enclosing measures are added, the construction process is likely to be toppled over, potential safety hazards are formed, and the width and the length of the frame 1 are larger than the diameter of the bundled steel strands 11.

The two ends of the sleeper 2 extend out of the frame 1, the bundled steel strands 11 are vertically arranged on the sleeper 2 in the frame 1, a gap is reserved between the lower ends of the steel strands 11 and the ground, the outer package of the steel strands 11 is conveniently detached, a certain waterproof and moistureproof effect is achieved, oil is soaked on the sleeper 2, the self weight and the waterproof performance of the sleeper are increased, the sleeper 2 is perpendicular to the bundled steel strands 11, the sleeper 2 can prevent the bundled steel strands 11 from moving towards two sides, and the frame 1 can also be fixed to prevent deformation or instability during construction;

in the embodiment, the outlet cylinder 3 is in a circular truncated cone shape with gradually reduced diameter from inside to outside, and comprises a large circular ring 3.1 fixed on the frame 1, a coaxial small circular ring 3.2 is arranged in front of the large circular ring 3.1, and the large circular ring 3.1 and the small circular ring 3.2 are welded through steel bars, so that the outlet of a steel strand is fixed, the travelling route of the steel strand is guided, and the steel strand is convenient to extract; the small circular ring 3.2 is welded with a circular plate 6 which is the same as the small circular ring, the front end of the circular plate 6 is fixed with an outlet pipe 7, the wall thickness of the outlet pipe 7 is large, the inner diameter of the outlet pipe is slightly larger than the diameter of the steel strand 11, a through hole is formed in the position, corresponding to the inner hole of the outlet pipe 7, on the circular plate 6, a rotary cutting surface of the cutting machine 5 is located on the outer side of the outlet pipe 7, and the steel strand 11 is further straightened.

As shown in fig. 3, 4, and 5, the cutter holder 4 includes a cross bar 4.2 connected to the frame 1, two longitudinal axes 4.1 are fixed to the cross bar 4.2 at intervals, a connecting rod 5.1 is fixed to a housing of the cutter 5, a collar 5.2 matched with the longitudinal axis 4.1 close to the outlet cylinder 3 is fixed to a terminal of the connecting rod 5.1, for cutting convenience, the cutter holder 4 is disposed at an oblique lower side of the outlet cylinder 3, in this embodiment, the type of the cutter 5 is 5035 profile cutter, when the steel strand 11 passes out of the outlet pipe 7 and the length of the steel strand 11 is enough, the cutter 5 sleeved on the cutter holder 4 is used for cutting, when the cutter is used, the cutter 5 is rotated to the position of the outlet pipe 7 to cut the steel strand 11 with the longitudinal axis 4.1 close to the outlet cylinder 3 as a rotating axis, and after the cutter 5 is used, the cutter 5 is rotated to the longitudinal axis 4.1 far from the outlet cylinder 3, thereby temporarily fixing the cutter 5.

The cutting machine 5 has two mounting modes: one way is that the cutting machine 5 can also be moved back and forth on the longitudinal axis 4.1 near the outlet cylinder 3, which can be removed when not in use, and the other way is that a stop ring preventing the cutting machine from sliding is provided near the longitudinal axis 4.1 of the outlet cylinder 3, which makes the cutting machine 5 more stable when cutting.

The top of frame 1 is provided with protection canopy 8, and the horizontal projection of protection canopy 8 covers frame 1 and a line section of thick bamboo 3, and the top of protection canopy 8 is provided with hoist and mount ring 8.1, and the installation of the protection canopy 8 of being convenient for lays the plank on the 8 skeletons of protection canopy, plays and prevents that the rainwater from making rusty effect of steel strand wires 11.

One side of the frame 1 close to the box girder 10 and one side far away from the box girder are both provided with inhaul cables 9, an anchoring ring is arranged on the ground of one side far away from the box girder, one end of each inhaul cable 9 is connected to the frame 1, and the other end of each inhaul cable 9 is connected to the anchoring ring on the ground; the pulling cable 9 near one side of the box girder 10 is connected to the door rib of the box girder 10 to further balance the pressure of the inclined bundle of steel strands 11.

The method comprises the following specific operation steps:

1. firstly, placing a frame 1 to a designated position, laying sleepers 2 to fix the position, then hoisting bundles of steel strands 11 to the position right above the frame 1 by using a gantry crane, slowly dropping the steel strands, then placing the steel strands on the sleepers 2 laid in advance, further fixing the frame 1 by using inhaul cables 9, and hoisting a protective shed 8 above the frame 1;

2. during extraction, the head end of the steel strand 11 is manually stretched into the outlet tube 3 and penetrates out of the outlet tube 7, and the head end of the steel strand 11 is marked, so that the braiding and tensioning construction at the later stage is facilitated;

3. when the steel strand 11 penetrates out of the outlet pipe 7 and the length of the steel strand 11 is enough, the cutting machine 5 sleeved on the cutting machine support 4 is used for cutting, the longitudinal axis 4.1 close to the outlet tube 3 is used as a rotating shaft when the cutting machine is used, the cutting machine rotates to the position of the outlet pipe 7 to cut the steel strand 11, and after the cutting machine is used, the cutting machine 5 is rotated to the longitudinal axis 4.1 far away from the outlet tube 3, so that the cutting machine 5 is temporarily fixed.

4. Steel strand wires 11 are not extracted from rectangular frame 1 along with the construction progress section, lead to steel strand wires 11 less gradually, and bundle steel strand wires 1 can drive frame 1 to a lopsidedness, need constantly adjust steel strand wires 11 positions at this in-process, vacate the position and insert other sleepers behind bundle steel strand wires 11 in the work progress, also can prevent that 11 quantity of steel strand wires from becoming less after the construction, the problem of slope appears after the activity space grow.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a fixed extraction of steel strand wires and cutting device, includes by steel bar welded cuboid frame (1), frame (1) upper end opening all has protection reinforcing bar, its characterized in that all around: sleeper (2) have all been laid to the top at both ends about frame (1) bottom reinforcing bar, one side of being close to the case roof beam of frame (1) is fixed with outlet cylinder (3) and cutting machine support (4), have two outside longitudinal axis (4.1) that extend on cutting machine support (4), wherein, be close to and rotate on longitudinal axis (4.1) of outlet cylinder (3) and be connected with cutting machine (5), the steel strand wires of outlet cylinder (3) exit end is in the cutting range of cutting machine (5), cutting machine (5) can support and lean on longitudinal axis (4.1) of keeping away from outlet cylinder (3).

2. The steel strand fixed extraction and cutting device of claim 1, wherein: the cutting machine support (4) comprises a cross rod (4.2) connected to the frame (1), two longitudinal shafts (4.1) are fixed to the cross rod (4.2) at intervals, a connecting rod (5.1) is fixed to the shell of the cutting machine (5), and a lantern ring (5.2) matched with the longitudinal shaft (4.1) close to the wire outlet cylinder (3) is fixed to the tail end of the connecting rod (5.1).

3. A steel strand fixed extraction and cutting device according to claim 1 or 2, characterized in that: the cutting machine bracket (4) is arranged obliquely below the outlet cylinder (3).

4. The steel strand fixed extraction and cutting device of claim 3, wherein: the outlet tube (3) is in a circular truncated cone shape with gradually reduced diameter from inside to outside, and comprises a large circular ring (3.1) fixed on the frame (1), a coaxial small circular ring (3.2) is arranged in front of the large circular ring (3.1), and the large circular ring (3.1) and the small circular ring (3.2) are welded through steel bars.

5. The steel strand fixed extraction and cutting device of claim 4, wherein: the welding has circular slab (6) rather than the isomorphism on little ring (3.2), and the front end of circular slab (6) is fixed with outlet pipe (7), and the position that corresponds outlet pipe (7) hole on circular slab (6) is provided with the through-hole, and the rotary cutting face of cutting machine (5) is located the outside of outlet pipe (7).

6. The steel strand fixed extraction and cutting device of claim 1, wherein: a protective shed (8) is arranged above the frame (1), the horizontal projection of the protective shed (8) covers the frame (1) and the wire outlet cylinder (3), and a hoisting ring (8.1) is arranged at the top end of the protective shed (8).

7. The steel strand fixed extraction and cutting device of claim 1, wherein: and one side of the frame (1) close to the box girder and one side of the frame (1) far away from the box girder are both provided with inhaul cables (9).

8. The steel strand fixed extraction and cutting device of claim 1, wherein: one side that is close to the case roof beam on frame (1) is nine palace trellises that the reinforcing bar is connected with one side of keeping away from the case roof beam, and the middle part of two sides of frame (1) all has the twice reinforcing bar that prevents the steel strand wires landing.

9. The steel strand fixed extraction and cutting device of claim 1, wherein: the two ends of the sleeper (2) extend out of the frame (1), the bundled steel strands are vertically arranged on the sleeper (2) in the frame (1), a gap is reserved between the lower ends of the steel strands and the ground, and the sleeper (2) is soaked in oil.