CN213471639U

CN213471639U - Be applied to protective shroud device of PCCP core concrete placement awl

Info

Publication number: CN213471639U
Application number: CN202021678295.5U
Authority: CN
Inventors: 陈亮; 刚永才; 杨开; 何勇; 郭鹏
Original assignee: Sinohydro Bureau 5 Co Ltd
Current assignee: Sinohydro Bureau 5 Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-06-18
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a guard ring device applied to a PCCP (prestressed concrete Cylinder pipe core) concrete pouring cone, which comprises a cylindrical guard ring sleeved at the top of the pouring cone, wherein the lower part of the guard ring is provided with a plurality of supporting plates used for being connected with the top of the pouring cone, and a gap is arranged between the bottom of the guard ring and the pouring cone; and a vibrator is arranged on the outer wall of the guard ring. The utility model provides a tradition pour the awl inhomogeneous when the concrete unloading, pour speed control difficulty, the embedded thin wall steel cylinder of tube core and pour the in-process and receive inhomogeneous extrusion and warp the scheduling problem, improved the primary qualification rate that the tube core was pour effectively, reduced equipment loss, artifical work load of plastering a plaster, effectively reduced engineering cost, had obvious economic benefits. During pouring, the high-speed vibrator on the guard ring is adopted to ensure that concrete is uniformly poured towards the inner wall and the outer wall of the tube core through a gap between the lower edge of the guard ring and the pouring cone.

Description

Be applied to protective shroud device of PCCP core concrete placement awl

Technical Field

The utility model relates to a manufacturing process of PCCP pipeline, concretely relates to be applied to protective shroud device of PCCP core concrete placement awl.

Background

The Prestressed Concrete Cylinder Pipe (abbreviated as PCCP) is a water Pipe made by winding circumferential Prestressed steel wires on a high-strength Concrete Pipe core with a steel Cylinder and spraying a compact cement mortar protective layer on the Prestressed steel wires.

The total length of the laid PCCP pipe in the northwestern Liaoning project is 50437.1m, and a PCCP De pipe (De means the outer diameter) 48945m (9789 section with various working pressures and earth covering depths) with DN3800 multiplied by 5000mm is produced. The PCCP De pipe core concrete with DN3800 multiplied by 5000mm (DN refers to the nominal diameter of the pipeline) is usually formed by vertical vibration, an anti-seepage thin steel cylinder (containing a bell and spigot steel ring) with the thickness of 1.5mm is embedded in the pipe core, and the pipe core pouring process comprises the following steps: firstly, starting an internal mold vibrator, and controlling the opening degree of a discharge port of a hopper by adjusting the relative height of the hopper and a pouring cone; when the pouring is started, the blanking speed is properly slowed down so as to ensure that the inner wall concrete is poured firstly; and after the inner wall concrete is poured to the height of about 500mm, the outer mold vibrator is started, the inner wall concrete and the outer wall concrete start to be synchronously and uniformly poured, and the height of the inner wall concrete is always kept higher than that of the outer wall concrete by about 500 mm. In the tube core pouring process, the blanking speed is controlled to be 2-3 min/m generally³And casting at the speed of (3). The continuity of concrete pouring should be maintained, if the feeding is not timely, the pouring speed should be slowed down, and the continuity of blanking pouring should also be maintained. And the blanking speed is slowed down when the pouring is finished so as to prevent the excessive concrete. And after concrete pouring is finished, closing the vibrators at the lower parts of the inner wall pipe die and the outer wall pipe die, hanging away the pouring cone, keeping the vibrators at the upper parts of the pipe dies to continuously vibrate for 5-8 minutes, and closing the vibrators at the upper parts of the pipe dies after observing that no bubbles emerge from the end faces of concrete. Observing the cement slurry condition of the concrete end face, replanting a proper amount of dry stones at the socket end of the inner wall and the outer wall of the tube core, uniformly inserting and tamping the dry stones by using iron borers, controlling the height difference of the end face of the tube core by using a self-made scraping rule, trowelling the concrete of the inner wall and the end face of the socket, and plastering the concrete end of the outer wallThe surface keeps 168 +/-3 mm with the end surface of the steel ring of the socket, and the end surface is smoothed.

In the implementation process of the pouring process, when the pouring cone is blanked, the blanking on the periphery of the pouring cone is uneven due to the cone structure. When the pipe core begins to be poured, concrete rapidly flows to the outer wall through the lower edge of the cone body, so that the concrete on the outer wall continuously rises, and the concrete on the inner wall does not exist or is little, so that the thin-wall steel cylinder embedded in the pipe core is deformed due to uneven extrusion, and finally the pipe core is scrapped.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a be applied to protective shroud device of PCCP tube core concrete placement awl for cooperation is pour the awl and is guaranteed that tube core inside and outside wall concrete evenly receives the material at PCCP tube core concrete placement in-process, improves a qualification rate that the tube core was pour.

For solving the technical problem, the utility model discloses the technical scheme who adopts does:

a retainer device applied to a PCCP (prestressed concrete Cylinder pipe core) concrete pouring cone comprises a cylindrical retainer sleeved at the top of the pouring cone, wherein a plurality of supporting plates used for being connected to the top of the pouring cone are arranged at the lower part of the retainer, and a gap is formed between the bottom of the retainer and the pouring cone; and a vibrator is arranged on the outer wall of the guard ring.

As a further technical solution of the above solution, the support plate includes a fixed steel plate and a connecting steel plate; one side of the upper part of the fixed steel plate is fixedly connected with the side wall of the retainer, and the lower part of the connecting steel plate is provided with an inclined plane used for being connected with the inclined plane at the top of the pouring cone; and the fixed steel plate and the connecting steel plate are correspondingly provided with a plurality of through holes for connecting bolts.

As a further technical solution of the above aspect, a first reinforcing plate is fixed to the top outer wall ring of the retainer.

As a further technical solution of the above aspect, a second reinforcing plate is fixed to the bottom outer wall of the retainer.

Compared with the prior art, the utility model, following advantage and beneficial effect have: the problems that a traditional pouring cone is uneven when concrete is fed, pouring speed is difficult to control, a tube core embedded thin-wall steel cylinder is deformed due to uneven extrusion in the pouring process and the like are solved, the one-time qualification rate of tube core pouring is effectively improved, equipment loss and manual plastering workload are reduced, engineering cost is effectively reduced, and obvious economic benefits are achieved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention in implementation.

Fig. 3 is a schematic top view of fig. 2, with the pouring hopper omitted.

Fig. 4 is a schematic structural view of the middle fixing steel plate of the present invention.

Fig. 5 is a schematic structural view of the middle connection steel plate of the present invention.

The explanation of each reference number in the figure is: the concrete casting device comprises a first reinforcing plate 1, a guard ring 2, a fixed steel plate 3, a connecting steel plate 4, a second reinforcing plate 5, a casting hopper 6, a casting cone 7, a bell and spigot steel ring 8, a steel cylinder 9, an inner mold 10, an outer mold 11, inner arm concrete 12 and outer wall concrete 13.

Detailed Description

The following detailed description of the present invention will be provided in order to further understand the concept of the present invention, the technical problems, the technical features constituting the technical solutions, and the technical effects brought by the technical features of the present invention, which are described in the following with reference to the accompanying drawings. However, the description of the embodiments is illustrative and not intended to limit the present invention.

The utility model discloses a pour the awl according to DN3800 x 5000 mm's PCCP De tube core that the producer provided, add a protective shroud device and solve the problem of evenly pouring on pouring the cone. Pour awl 7 and be the toper structure, evenly seted up a plurality of breachs at the bottom edge of pouring awl 7. The working principle of the pouring cone 7 is as follows: the pouring hopper 6 is hoisted to the upper part of the pouring cone 7, concrete flows uniformly in a scattered mode from the top of the pouring cone 7 along the inclined surface of the pouring cone 7, one part of concrete flows into the outer wall of the tube core along the edge of the bottom of the pouring cone 7 to form outer wall concrete 13, and the other part of concrete flows into the inner wall of the tube core along the gap of the bottom of the pouring cone 7 to form inner arm concrete 12.

The utility model discloses a be applied to PCCP core concrete and pour protective shroud device of awl includes the cylinder protective shroud 2 of cover locating pouring awl 7 top, the lower part of protective shroud 2 is provided with a plurality of backup pads that are used for connecting in pouring awl 7 top, have a clearance between the bottom of protective shroud 2 and pouring awl 7; and a vibrator is fixedly arranged on the outer wall of the retainer 2. After the protective ring 2 is additionally arranged on the pouring cone 7, when the tube core is poured, concrete flows to the junction of the protective ring 2 and the pouring cone 7 through the inclined surface of the pouring cone 7 rapidly and is accumulated at the junction, and the concrete cannot flow to the outer wall through the lower edge of the cone directly as before, so that the inner wall has no concrete, and the embedded thin-wall steel cylinder 9 of the tube core is deformed due to uneven extrusion. When the concrete is piled up at the juncture of the guard ring 2 and the pouring cone 7, the concrete can only flow through a fixed gap between the bottom of the guard ring 2 and the pouring cone 7, and the flow speed of the concrete is controlled, so that the over-fast flow and the uneven flow of the concrete are avoided. The vibrator can ensure that concrete between the guard ring 2 and the pouring cone 7 does not tend to solidify due to excessive accumulation, and can ensure the pouring continuity.

The support plate includes a fixing steel plate 3 and a connecting steel plate 4. One side of the upper part of the fixed steel plate 3 is welded with the side wall of the retainer 2, and the lower part of the connecting steel plate 4 is provided with an inclined plane which is used for being welded with the inclined plane at the top part of the pouring cone 7. And a plurality of through holes for connecting bolts are correspondingly formed in the fixed steel plate 3 and the connecting steel plate 4. Fixed steel sheet 3 and connection steel sheet 4 correspond connection protective shroud 2 respectively and pour awl 7, through a plurality of through-hole cooperation bolted connection between the two for clearance interval between protective shroud 2 bottom and the awl 7 of pouring can be adjusted, thereby the speed of pouring of control concrete, with the concrete that adapts to different ratios. Meanwhile, the guard ring 2 can be conveniently detached, so that the pouring cone 7 can finish pouring according to the prior form.

The top outer wall hoop of protective shroud 2 has welded first reinforcing plate 1 upwards. And a second reinforcing plate 5 is welded on the bottom outer wall of the retainer 2 in an upward mode. The first reinforcing plate 1 and the second reinforcing plate 5 can prevent the retainer 2 from being deformed when unevenly pressed by concrete.

Specifically, the first reinforcing plate 1 and the second reinforcing plate 5 have dimensions of phi 3600mm, high 120mm and thick 10mm, are respectively located at the edges of the upper and lower openings of the retainer 2, and are aligned with the edges of the upper and lower openings of the retainer 2, and also function as reinforcing steel plates at the weak stress positions of the upper and lower openings of the retainer 2 to prevent the deformation of the round openings of the retainer 2 during the hoisting process.

The size of the guard ring 2 is phi 3580mm, 1000mm high and 10mm thick, which can ensure the concrete on the inclined surface of the pouring cone 7 to be evenly spread.

The utility model provides a tradition pour awl 7 inhomogeneous when the concrete unloading, pour speed control difficulty, the embedded thin wall steel cylinder 9 of tube core and pour the in-process and receive inhomogeneous extrusion and warp the scheduling problem, the effectual one time qualification rate that has improved the tube core and pour has reduced equipment loss, artifical work load of plastering a plaster, has effectively reduced engineering cost, has obvious economic benefits.

During pouring, a high-speed vibrator on the guard ring 2 is adopted to ensure that concrete is uniformly poured towards the inner wall and the outer wall of the tube core through a gap between the lower edge of the guard ring 2 and the pouring cone 7. The blanking clearance between the guard ring and the pouring cone can be adjusted by adjusting the positions of the bolts and the through holes between the fixed steel plate 3 and the connecting steel plate 4.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a be applied to protective shroud device of PCCP core concrete placement awl which characterized in that: the casting device comprises a cylindrical guard ring (2) sleeved at the top of a casting cone (7), wherein a plurality of supporting plates connected to the top of the casting cone (7) are arranged at the lower part of the guard ring (2), and a gap is formed between the bottom of the guard ring (2) and the casting cone (7); and a vibrator is arranged on the outer wall of the retainer (2).

2. The retainer device applied to the PCCP core concrete casting cone of claim 1, wherein: the supporting plate comprises a fixed steel plate (3) and a connecting steel plate (4); one side of the upper part of the fixed steel plate (3) is fixedly connected with the side wall of the retainer (2), and the lower part of the connecting steel plate (4) is provided with an inclined plane used for being connected with the inclined plane at the top part of the pouring cone (7); and a plurality of through holes for connecting bolts are correspondingly formed in the fixed steel plate (3) and the connecting steel plate (4).

3. The retainer device applied to the PCCP core concrete casting cone of claim 1, wherein: and a first reinforcing plate (1) is annularly and upwardly fixed on the outer wall of the top of the retainer (2).

4. The retainer device applied to the PCCP core concrete casting cone of claim 1, wherein: and a second reinforcing plate (5) is annularly and upwardly fixed on the outer wall of the bottom of the retainer (2).