SU1152791A1 - Mould for making pressure-head tubing of concrete mixes - Google Patents

Abstract

FORM FOR PRODUCING PRESSURE OF TUBULAR ARTICLES OF CONCRETE MIXTURE comprising mounted on a pallet core and ohvaty75 22 vayuschuyu its outer formwork in the form of contact with each other by longitudinal flanges of the mold halves with Art zhnymi fixture E and centering ring oglichayuscha in that, in order to reduce the complexity assembling and disassembling and increasing productivity, the centering ring is provided with stops attached by means of screw pairs, and the stiffening devices are made in the form of contacting with the last ary spaced vertical rods with a spring-loaded sliding Suhar E connected via inclined scharnirnyh rods with longitudinal flanges, the lower ends schtang placed in a tray formed holes. (L ate yu ig.1

Description

This invention relates to the manufacture of precast concrete and reinforced concrete products, tubular nalrimer.

The purpose of the invention is to reduce the labor intensity of assembly and disassembly and increase productivity.

FIG. 1 shows the shape, general appearance; in fig. 2 is a view A of FIG. 1 in FIG. 3 shows a section BB in FIG. 2; in fig. 4 — node I in FIG. I; in fig. 5 — node II in FIG. four.

The form for the manufacture of pressure pipes contains a dodon 1, a core 2 and an external formwork 3 consisting of two half-molds,

Formwork form halves 3 are made with longitudinal flanges 4, tensioning devices and centering ring 5. Centering ring 5 is equipped with screws 7 connected by screws 6. Fixing devices are made in the form of symmetrically arranged vertical shtangs 8 with sliding supports 9 which are in contact with stops 7 connected by inclined articulated t g 10 with longitudinal flanges 4. The lower ends of the shtang are placed in the holes formed in the pan 11.

The four vertical bars 8 are fastened with rims 12. The bars 3 with the bars 10 are arranged for different half-forms in pairs in a vertical plane, perpendicular to the plane of the longitudinal flanges 4.

Crackers 9 interact with their inclined planes with spring-loaded tongues 13.

On the upper plane of the centering ring 5 above the stops 7 are installed nuts

14, fixed ring stop

15 mounted on the centering ring 5. Screws 6 are screwed into the nuts 14, pivotally connected to the stop 7 by an axis 16 placed in an elongated groove 17 made in screw 6. The stop bars 18 are mounted on the shanks 8 and the centering ring 5 Loop pins 19 are attached for lifting the lifting cable. The formwork is pressed to the pallet with clamps 20, and the centering ring to the formwork - clamps 21. The half-molds are provided with forming half-rings 22.

The form works as follows.

In the section for assembling the mold on the pallet 1, a crane (not shown) after the installation of the core 2, sets the half-molds of the centering ring 5 at the same time as the two half-molds of the formwork 1

with barbells 8. In this case, first, half-molds of formwork 1 and, upon further lowering of the centering ring 5, the rod 9 enters holes 11, and pallet-10 turns in hinges and move the half-forms of formwork to each other and seal together longitudinal flanges 4.

After compaction of the longitudinal flanges 4, the lowering of the rods 8 is stopped, and the centering ring 5 continues to lower until it seats on the forming half rings, as a result of which a gap forms between the crackers 9 and the lower plane of the centering ring 5.

Then the centering ring 5 is fastened with clamps 21 to the mold half-molds 1, and the latter with clamps 20 to the pallet 1.

To fix the sealed longitudinal flanges 4, lower the screws 6 with the nuts 14, the clamps with the supports 7 of the rod 8.

After concreting and steaming the pipe core, the form is dismantled. To do this, clamps 21 are pressed and the centering ring 5 is lifted by a crane, forming a gap between the surfaces of the ring 5 and the forming half-rings 22. During this lift, the stops 7 do not move because of the grooves 17, but lie on the rods 8, thanks to which the pins 13 are drowned, and crackers 9 are moved apart.

When the lower plane of the centering ring 5 stops in the crackers 9, lifting of the schtang 8 and connecting them with 10 g begins, thus detaching the half-molds of the formwork from the concrete surface of the pipe.

The rotation of the pullers 10 and the size of the separation of the flanges 4 is fixed by the constraints 18. In the process of the separation of the flanges, the lower ends of the rods 8 are located in the holes 11 of the pallet 1.

Upon further raising of the centering ring 5, the two mold halves are simultaneously removed from the pipe and transferred to the preparation site for cleaning and lubrication.

If it is necessary to remove the centering ring 5 from the formwork using nuts 14, screws 6 raise the stops 7. At the same time, the pins 13 are squeezed out of the rods 8 by springs, and in turn the springs compress the rusks 15, flush them flush with the surface of the rods 8.

After cleaning and lubricating the mold, the formwork 1 is transferred by crane to the mold assembly site to continue the cycle.

Claims (1)

A FORM FOR MANUFACTURING HEADED TUBULAR PRODUCTS FROM CONCRETE MIXTURES, comprising a core mounted on a pallet and covering its outer formwork in the form of half-molds contacting each other with longitudinal flanges with clamping devices and a centering ring, characterized in that, in order to reduce the complexity and assembly performance, the centering ring is equipped with stops connected by means of screw pairs, and the clamping devices are made in the form of contacts symmetrically contacting the latter position of the vertical sliding spring-loaded rod with breadcrumbs interconnected by hinge rods inclined with longitudinal flanges, the lower ends of rods placed in holes formed in the pan. g <7> game 1