DK166592B1 - Method for producing points sleepers made of concrete, and a ribbed plate, a bottom plate or, respectively, a shuttering plate for use in implementation of the method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for the manufacture of concrete tracer sleepers and of the kind specified in the preamble of claims 1, 3 and 4 as well as a rib plate, a bottom plate and a formwork plate for use in the practice of the method.

GB 166592 B1 5 Formwork for serial production of concrete pieces is usually made very stable and is similarly expensive as they can be used a large number of times. This is not least the case in the manufacture of clamping table sleepers made from one another. These also place great demands on a precise location of the components. Such parts are therefore fixed in bores in the formwork, which bores must be extremely precisely located.

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In the case of sleepers, the recesses - dents or pipe sleeves for the rail fastening bolts - lie on the top of the sleepers. The top of the swallow lies in the formwork towards its bottom. The bottom plate thus serves as a template for the incorporation of said parts.

15 For large series a drill grid is often used. The templates needed for each type of sleep therefore only affect the price of the individual sleep to a lesser extent. In the case of smaller numbers of a swelling type, the price of the bottom plate serving as a template for the components can destroy the economy of manufacture.

20 Particularly complicated is the manufacture of the bores in alternating groove templates. In conventional rail sleepers, the rail axis cuts the sleepers perpendicularly. The mounting parts for fixing the rails to the sleepers and the bores fixed to the parts of the formwork bottom plate are therefore located at normal railway sleepers in the middle axis. This is not the case with switching sleepers.

At these, the shaft axis cuts the swelling axes at different and usually not right angles.

25 So far, rails plates used in the axis have not been cut at right angles for fastening, which have required, in numerous axes distributed over the swell surface, mounting parts for the rib plate fastening bolts and corresponding bores for fixing the mounting parts in the bottom plate of the formwork. A formwork for concrete slab sleepers is known from DE 3440247. This formwork has a steel bottom plate which is very precisely positioned 30 between side pieces. Manufacture of a second base plate with bores placed elsewhere and its incorporation is expensive.

The object of the invention is to provide a method in which a base plate for a clamping table formwork can be used for the production of smaller series of switching track sleepers of 35 concrete and with different placement of the components.

This is achieved according to the invention by the methods of claims 1, 3 and 4.

DK 166592 B1 2

Claim 1 discloses a simple solution in which the base plate, when used for the preparation of another type of swelling, is optionally provided with the new hole combination on site. However, this workflow requires significant labor costs. The non-usable bores are covered. For each type of sleep a new cover is made which is relatively inexpensive. Markings 5 for the position of the components can be inscribed on the cover by means of a computer, so that the cover can serve as a template for the drilling. The manufacture of such a thin metal sheet, plastic or synthetic paper cover is considerably cheaper than the manufacture of a new steel base for the formwork.

In the method according to claim 3, the base plate is provided from the beginning in a workflow with bores corresponding to all the types of swelling that can be spoken. After incorporation of base plates in the formwork, the bores are provisionally closed by means of plugs, for example plastic, or by means of recess. Later, the drill bits required for a given type of sleep must then be opened and provided with holding means for the installation parts. The searching of the required bores can according to claim 6 be carried out by means of a search template or with an electronic program controlled unit. The method of claim 3 later eliminates drilling in the bottom plate, but of course limits the use to such types of swelling if hole combinations are pre-drilled.

The method according to claims 4 and 5 is independent of a prior determination of the swelling type. The base plate is provided in a predetermined grid, conveniently on the center axis and / or on parallel axes with bores or a through slot. Thereby, the retaining means for the tube bushes in the shift groove and screws for the rib plate can only be placed at certain points of the sleeve. These points are not necessarily points which lie in the longitudinal axis of the rib plate. Thus, using the method of claims 4 and 5, according to the circumstances of the rib plate, requires minor deviations from the center axis.

Compared to the method according to claim 3, in which the base plates are separated from each other by separating means and each corresponds to a swell, a base plate according to the method 30 according to claim 4 or 5 can extend under several, possibly all the sleepers in the clamping table. In this case, the separators are attached to the base plate.

For use in the practice of the method, a rib plate, a bottom plate or a formwork plate, respectively, can conveniently be designed as disclosed in claims 7, 8 and 9 respectively.

The invention will now be explained in more detail in connection with the drawing, in which FIG. 1 shows a section through a clamping table with series-made concrete stands; FIG. 2 is a top view of a portion of a cover applied to the base plate of the clamping table; FIG. 3 is a vertical section through the same; FIG. 4 is a top plan view; FIG. 5 shows a connection with the bottom plate of FIG. 4 is a top view of the search template used; FIG. 6 shows another embodiment of a bottom plate seen from above; FIG. 7 shows a connection with the bottom plate of FIG. 6 is a top view of the search template used; and FIG. 8 shows an eccentric with respect to the longitudinal axis pierced rib plate.

10 In a system 1 for the manufacture of concrete track sleepers 2 in succession in a clamping table, the concrete is molded between lateral formings on a base plate 3. Sequentially arranged sleepers are separated from each other in the formwork by means of separators 9. The base plate 3 has bores 4 for fixing the placement of recessed parts 5 in the sleepers 2.

FIG. 2 and 3 show a cover 6 for placement on the base plate 3 and on which the location of the mounting parts for another type of sleep is shown. This cover 6, for example, adheres to bores 7 previously used. By means of the markings 8 'placed on the cover 6, bores 8 corresponding to said second swelling type are prepared.

The embodiment of FIG. 4, the bottom plate 3 shown has several sets of A ^ -Am, B- | -Bn and C-j-Cr of bores corresponding to different types of swelling. The base plate has a length corresponding to a swell length. Separating means 9 are arranged between several baseplates 9. By means of a search template 10 (Fig. 5) the bores B-Bn corresponding to a particular swelling type B can be found. The search template 10 and the bottom plate have corresponding marks 11.

In FIG. 4 is shown the outline 12 of a generally ribbed rib along the longitudinal axis 13.

FIG. 6 shows a plurality of bottom plates 21, which can be used successively, with bores 25 formed in a defined pattern. By means of a search template 14 with pass markings 16, the bores K-1-Km and the bores 22 are searched for attachment of separating members 9. Bores 23,24 in an associated rib plate 17 do not lie on its central axis 18 but at (usually different) distance (19,20) from it to be covered by the raster bores K- | and l <2.

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Claims (9)

1. A method for manufacturing concrete tracer sleepers in a clamping formwork, the base of which is Jiar bores, through which means can be passed for retaining means 5 for mounting members in the swell surface during the concrete casting, and which can be reused for sleepers of different lengths and with different placement of mounting parts. , characterized in that after each first use of the base plate (3), for each further application to the base plate, a thin cover (6) covering the previously used bores (7) is provided and which, depending on the material used, is so thick, that it does not reveal these bores (7) under the pressure of 10 concrete, and on which the positions (8) of holding means for the new application are marked. Method according to claim 1, characterized in that said markings of the positions of the holding means are transferred to the cover (6) by means of a computer. 15 3. A method for producing concrete tracer sleepers in a clamping formwork, the base of which has bores through which means for holding retaining members for retaining members in the swell surface during the concrete casting, and which can be reused for sleepers of different lengths and with different placement of the installation parts, can be reused. characterized in that, before mounting in the formwork, the base plate (3) is provided with bores (A, B, C) for several types of swelling, that the bores (ABC) are closed provisionally by suitable means and that the clen for producing a specific type of drilling required drilling combination exists and the bores are exposed. 4. A method for producing concrete tracer sleepers in a clamping formwork, the base of which has bores through which means for holding retaining members for retaining members in the swelling surface during the concrete casting, and which can be re-used for sleepers of different lengths and with different placement of the components, can be reused. characterized in that the base plate (21) in a predetermined pattern, conveniently on the central axis 30 and / or on parallel axes, and at a certain distance is provided with bores (25), that the bores (25) are provisionally closed by means, and that the bore combination (k) necessary for the preparation of a particular sleep type exists and the bores are exposed. Method according to claim 4, characterized in that the series of bores formed on the central axis and / or a parallel axis formed therein is constituted by a continuous slot. Method according to claim 4 or 5, characterized in that, for each type of sleep, a search template (10.14) with all the bores existing in the base plate (ABC DK 166592 B1 5 and J, KVL) respectively, is prepared and the drill-type associated bores (B and K, respectively) are particularly marked in that the search template (10.14) is manually placed (11,15) on the base plate and by means of pass marks (11,15) placed on the base plate, whereby the drilling image (B and K) on the template is made to cover the bores (B and K respectively) 5. the bottom plate (3.21) and that the bores (B and K respectively) are exposed. Rib plate for use with the changing groove sleepers produced by the method according to claims 4 and 5, characterized in that the bores (23, 24) are arranged eccentric with respect to the longitudinal axis (18) of the rib plate (17). 10 Bottom plate for use in the practice of claims 4 and 5, characterized in that it extends over several successive sleepers in the formwork. Formwork plate for use in the practice of claims 4 and 5, characterized in that it extends throughout the length of the clamping table.