RU2346810C2 - Device to attach and protect anchor head in concreting ties - Google Patents

Abstract

FIELD: mechanics; construction.

SUBSTANCE: proposed device is designed to attach and protect anchor head in concreting ties comprises anchors, a metal structure and an appliance for attachment at the said structure bottom and protection of the anchor heads. The anchor leg is jointed to its head with the help of a rigid flange sealer where on the head lower part rests the said lower part representing a closed surface receiving the aforesaid flexible sealer. The mounting holes arranged in the aforesaid metal structure match the anchor head side surface shape, with the flexible sealer fitted therein. Note that the said surface has a lead-in chamber to receive the said flexible sealer. Note that the sealer outer surfaces are arranged at the "α" angle to the inner surface to ensure interference fit between the flexible sealer and the metal structure holes walls.

EFFECT: lower labor and metal input.

2 cl, 6 dwg

Description

The invention relates to parts of the upper structure of a railway track, in particular to the manufacture of reinforced concrete sleepers with rail anchoring.

The closest to the claimed device for its intended purpose and design is a device for the manufacture of anchor reinforced concrete sleepers, presented in the description of the utility model for patent RU 45961 U1, 06/10/2005, IPC B28B 7/24.

The known device includes a multi-seat metal mold with a set of technological equipment, an anchor seal and mounting plates, each of which has symmetrically located holes for the anchor with seals installed on it, made narrower to the bottom, each opening of the mounting plate in the central part is blocked by jumpers, rigidly connected to the mounting plate, the holes located in the area are the supporting surfaces for the anchor with a seal installed on it, but and sections of jumpers, which are supporting, are made recesses in shape corresponding to the parts of the seal located in them.

The disadvantages of the known device for the manufacture of anchor reinforced concrete sleepers and anchor seal are: firstly, the large metal consumption of the device:

a) the bottom of the mold has additional plates and lintels;

b) two anchors are interconnected by a metal bridge: separate anchors are almost 3 times less in weight of paired ones (1.7 kg × 2 <≈9 kg).

Secondly, the seals serve only to prevent leakage from the form of liquid concrete and do not hold the anchors from displacement during vibration compaction of concrete, therefore, clamping screws are used, which also increases the metal consumption and laboriousness.

Thirdly, there is no clear restriction on the height of the anchor heads: the seal can compress to different sizes.

Fourth, the known device for the manufacture of anchor reinforced concrete sleepers cannot be used when using lightweight anchors.

The basis of the invention is the task to simplify the device for securing and protecting the head of the anchors of various designs when concreting sleepers by developing rigid flange and elastic seals for the anchor head, which ensure the location of the head of the anchor in the bottom of the metal form both in height and in vertical, exclude leakage of concrete when it vibration compaction.

The technical result of the invention is to reduce the complexity and material consumption of the device for fixing and protecting the head of the anchor when concreting sleepers.

To achieve this, in the design of the anchor, its leg is connected to the head using a rigid flange seal, which ensures the height and verticality of the head of the anchor relative to the bottom of the mold, and on which the lower part of the head of the anchor rests in the form of a closed rectangular surface to accommodate the elastic seal, and the mounting holes in the bottom metal shapes correspond to the contour of the lower part of the head of the anchor with an installed elastic sealant, the outer side surfaces of which are made at an angle α to the inner the lower surface to create tension between the walls of the hole in the bottom of the metal form and an elastic seal.

A causal relationship between the totality of the features of the invention and the technical result is that the lower part of the anchor head is integral with the rigid seal in the form of a flange connecting it to the anchor leg. As a result of this, a second unified system of fixing and protecting the head of the anchor with an elastic sealant has been created, which guarantees protection of the head of the anchor when concreting the sleepers, ensures accuracy of depth and verticality relative to the bottom of the form of its landing in metal form.

The device for securing and protecting the head of the anchor when concreting the sleepers is illustrated by drawings, where:

figure 1 shows a General view of the device for securing and protecting the head of the anchor when concreting sleepers;

figure 2 - anchor with a rigid flange seal;

figure 3 shows a General view of an elastic seal;

figure 4 is a section along "aa" in figure 3;

figure 5 - anchor with a rigid flange and elastic seals;

figure 6 shows the holes in the bottom of the metal mold for the anchor head.

In figure 1, 2, 5, position 1 denotes the head of the anchor 2, position 3 - the lower part of the head 1; 4 - anchor leg 2; 5 - hard flange seal; 6 - elastic seal; 7 - metal form; 8 - hole in the bottom of a metal mold under the head 1 of the anchor 2.

The device for securing and protecting the head of the anchor when concreting the sleepers works as follows.

On the lower part 3 of the head 1 of the anchor 2 (FIGS. 2, 5), an elastic seal 6 is inserted until it stops with a thickened end (FIG. 4) into the rigid flange seal 5, then the anchor 2 (FIG. 1) with the head 1 is inserted into the hole 8 of the bottom the metal mold 7 and is pressed (clogged) until the hard flange seal 5 rests in the bottom of the metal mold 7, thereby achieving the specified height of the head 1 of the anchor 2 and its necessary inclination in the concrete sleeper, while the elastic seal is tightened together with the rigid flange seal 5 securely holds anchor 2 in metal form 7, excluding its distortions, respectively, a predetermined distance between the heads 1 of the anchors 2 is maintained, which ensures the track gauge of the railway.

The hard flange seal 5 together with the elastic seal 6 tightly block the access of both concrete and its “milk” to hole 8 when filling mold 7 with concrete and its compaction on vibrators.

The ratio of the geometric values of the elastic seal

where α = 2 ... 3 °;

b is the thickness of the upper wall of the elastic seal;

C is the thickness of the lower wall of the elastic seal;

h is the wall height of the elastic seal.

The thickness of the upper part of the wall of the elastic sealant is set depending on the amount of shrinkage of concrete sleepers in the steaming chamber.

When steaming concrete forms in steaming chambers, polyethylene elastic seals do not interfere with the shrinkage of concrete in the sleepers, and when removing sleepers from the molds on the tilter, there is no need to use force to remove the sleepers. Sleepers themselves fall out when capsizing forms due to the shrinkage of elastic seals after steaming.

The elastic seals 6 after removing the sleepers from the metal mold remain on the heads 1, acting as protective caps for the heads 1 of the anchors 2 during transportation and storage of sleepers.

The manufacture of an experimental batch of sleepers (more than 1,500 pcs.) With anchor fastening confirmed the high efficiency of the inventive device for securing and protecting the head of the anchor when concreting railway sleepers.

Claims (2)

1. The device for securing and protecting the head of the anchor when concreting sleepers, containing anchors, a metal mold and devices for fixing and protecting the bottom of the shape of the heads of the anchors, characterized in that the anchor leg is connected to its head using a rigid flange seal on which the lower part rests heads in the form of a closed surface to accommodate an elastic seal, and the mounting holes in metal form correspond to the contour of the side surface of the head of the anchor with an installed elastic seal with the necessary entry chamfer for the entrance of the elastic seal, the outer surfaces of which are made at an angle "α" to the inner surface to create tension between the elastic seal and the walls of the hole in a metal form. 2. The device according to claim 1, characterized in that the ratio of the geometric values of the elastic seal

where the angle α = 2 ... 3 °,
b and c are the thickness of the upper and lower parts of the wall of the elastic seal;
h is the wall height of the elastic seal.

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