Distributor and / or compactor device for use in the production of concrete bodies in a radial pressing method

Abstract

The present invention relates to a distributor and / or compactor device for use in the production of concrete bodies having a circular inner cross-section, in particular concrete pipes, in a radial pressing method and / or roller head method, having a distributor roller head 200 and / or a compactor roller head 100, wherein at least two rollers 207a and 207b which are not directly driven are rotationally coupled.

Description

[0001] Distributor and / or compactor device for use in the production of concrete bodies using the radial pressing process

[0002] Description

[0003] The present invention relates to a distributor and / or compressor device for use in the production of concrete bodies, in particular concrete pipes, having a circular inner cross-section, using a radial pressing process and / or a roller head process. Furthermore, the present invention relates to a system for producing concrete bodies, in particular concrete pipes, having a circular inner cross-section, using a radial pressing process and / or a roller head process, comprising an outer shape, such a distributor and / or compressor device, and / or drives for the distributor and / or compressor device.

[0004] background

[0005] In the prior art, it is known to manufacture precast concrete elements, such as tubular concrete products, using the radial pressing method and / or the roller head method, whereby distributor and / or compressor devices are used in the manufacturing process, in particular distributor and / or compressor heads (English: "packerhead").

[0006] A distributor and / or compressor device of this type, referred to therein as a compaction tool, and a manufacturing plant with such a distributor and / or compressor device are described, for example, in EP 2 377 659 A1. Such distributor and / or compressor devices typically comprise a distributor roller head with several distributor rollers and a compressor roller head with a smoothing cylinder or smoothing piston, as well as typically several compressor rollers, also called press rollers. Typically, in the manufacturing process for concrete pipes using the radial press or roller head method, the compressor roller head with the smoothing cylinder is driven by an axial shaft, and the distributor roller head is typically driven by a coaxial hollow shaft rotating in the opposite direction to the direction of rotation of the compressor roller head.In some distributor and / or compressor heads, the compressor and / or distributor rollers can also be driven by rotation (see e.g. DE 44 22 891 CI), however, in devices of this type, the compressor and / or distributor rollers are typically not driven directly, but roll along the inside of the concrete pipe to be formed in a quasi-indirect manner, as described e.g. in EP 2 377659 Al.

[0007] Other generic distribution and / or compressor devices are described, for example, in the following publications: WO 2013 / 173030 Al, DE 103 14 722 B3, DE 30 12 090 Al, US 4,407,648 B, EP 1473 128 Al and DE 2738 944 Al.

[0008] In typical distribution and / or compaction devices, uneven wear often occurs on the rollers, particularly on the distribution rollers. These rollers, especially the distribution rollers, typically push the fresh concrete ahead of them like a bow wave. Stones can become wedged between the roller shell and adjacent components, causing the non-driven roller to stop. The friction of the roller shell against the concrete being compacted then releases it, causing it to rotate again before stopping once more. This can lead to uneven wear on the rollers, necessitating downtime for maintenance.

[0009] In this context, it is an object of the present invention to further develop the prior art described above, starting from generic distributor and / or compressor devices, in order in particular to enable more efficient manufacturing and / or to avoid downtime, especially preferably by reducing wear, in particular on distributor and / or compressor rollers and any resulting maintenance susceptibility.

[0010] Summary

[0011] The present invention relates to a distributor and / or compressor device for use in the production of concrete bodies, in particular concrete pipes, having a circular inner cross-section, using a radial pressing process and / or a roller head process. Furthermore, the present invention relates to a system for producing concrete bodies, in particular concrete pipes, having a circular inner cross-section, using a radial pressing process and / or a roller head process, comprising an outer shape, such a distributor and / or compressor device, and / or drives for the distributor and / or compressor device.

[0012] In particular, to solve the aforementioned problem, a distributor and / or compressor device for use in the production of concrete bodies, especially concrete pipes, having a circular inner cross-section, using the radial pressing and / or roller head process, is proposed according to claim 1. Dependent claims relate to a production plant with such a distributor and / or compressor device. The dependent claims relate to preferred embodiments.

[0013] According to a first aspect, a distributor and / or compressor device for use in the production of concrete bodies, especially concrete pipes, using the radial pressing method and / or roller head method is proposed, comprising: at least one rotatably driven distributor and / or compressor roller head with several compressor and / or distributor rollers, wherein at least two compressor and / or distributor rollers of the at least one rotatably driven distributor and / or compressor roller head are arranged to be rotaryally coupled.

[0014] According to a second aspect, a plant for the production of concrete bodies, in particular concrete pipes, using the radial pressing method and / or the roller head method is proposed, with an outer shape and such a distributor and / or compressor device, and / or with one or more drives for the distributor and / or compressor device.

[0015] According to some preferred embodiments, the at least two rotaryally coupled compressor and / or distributor rollers are preferably not directly driven by rotation.

[0016] According to some preferred embodiments, the at least one distributor and / or compressor roller head can have several pairs of rollers, wherein the compressor and / or distributor rollers of the respective pair of rollers are preferably rotatably coupled to each other in pairs.

[0017] According to some preferred embodiments, the at least two rotaryally coupled compressor and / or distributor rollers can be rotationally coupled to each other via a common shaft in a rotationally fixed manner. According to some preferred embodiments, the common shaft can be rotatably mounted on a rotatably driven roller carrier section.

[0018] According to some preferred embodiments, a first roller of the at least two rotatorily coupled compressor and / or distributor rollers can be arranged in the axial direction above the roller carrier section, and / or a second roller of the at least two rotatorily coupled compressor and / or distributor rollers can be arranged in the axial direction below the roller carrier section.

[0019] According to some preferred embodiments, a first roller of the at least two rotatorily coupled compressor and / or distributor rollers can be held non-rotatably at one end of the common shaft, and / or a second roller of the at least two rotatorily coupled compressor and / or distributor rollers can be held non-rotatably at one end of the common shaft.

[0020] According to some preferred embodiments, the device may comprise a compressor roller head with a smoothing cylinder and / or several compressor rollers, and / or a distribution roller head with several compressor rollers, preferably comprising the at least two rotatably coupled compressor and / or distribution rollers.

[0021] According to some preferred embodiments, the at least two rotaryally coupled compressor and / or distributor rollers can be rotaryally coupled via a gearbox.

[0022] Further aspects and their advantages, as well as advantages and more specific implementation possibilities of the aspects and features described above, are described in the following descriptions and explanations of the attached figures, which are in no way to be understood as restrictive.

[0023] Brief description of the characters

[0024] Fig. 1 shows an exemplary schematic perspective view of a distributor and / or compressor device according to an embodiment;

[0025] Fig. 2 shows an exemplary schematic longitudinal sectional view of the distributor and / or compressor device according to Fig. 1; and Fig. 3 shows an exemplary schematic perspective view of a distributor and / or compressor device according to a further embodiment.

[0026] Detailed description of the figures and preferred embodiments

[0027] Examples and embodiments of the present invention are described in detail below with reference to the accompanying figures. Identical or similar elements in the figures may be designated with the same reference numerals, but sometimes they may be designated with different reference numerals.

[0028] It should be emphasized that the present invention is in no way limited or restricted to the embodiments and features described below, but also includes modifications of the embodiments, in particular those which are encompassed by modifications of the features of the described examples or by combining one or more of the features of the described examples within the scope of protection of the independent claims.

[0029] Fig. 1 shows an exemplary schematic perspective view of a distributor and / or compressor device (e.g. a compressor head or compressor tool) according to an embodiment, and Fig. 2 shows an exemplary schematic longitudinal sectional view of the distributor and / or compressor device according to Fig. 1.

[0030] In particular, distributor and / or compressor devices according to some embodiments are designed to be used together with an outer mold for the production of concrete bodies (e.g., unreinforced concrete pipes or reinforced concrete pipes) and, in particular, depending on the outer mold, various precast concrete elements with a circular inner cross-section in the radial pressing process or roller head process.

[0031] The distributor and / or compressor device according to Figures 1 and 2 includes, by way of example, a compressor roller head 100, which can, by way of example, be driven by rotation via an axial shaft 101. Furthermore, the distributor and / or compressor device according to Figures 1 and 2 includes a distributor roller head 200, which can, by way of example, be driven via a hollow shaft 202, which is, by way of example, aligned coaxially with the shaft 101.

[0032] In the manufacturing process, the compressor roller head 100 and the distributor roller head 200 are typically driven to rotate in opposite directions, such that the compressor roller head 100 is preferably driven counterclockwise by means of the shaft 101 when the distributor roller head 200 is driven clockwise by means of the hollow shaft 201, and / or such that the compressor roller head 100 is preferably driven clockwise by means of the shaft 101 when the distributor roller head 200 is driven counterclockwise by means of the hollow shaft 201.

[0033] The compressor roller head 100 includes, for example, a smoothing cylinder 102 (also called smoothing cylinder or smoothing piston). The smoothing cylinder 102 of the compressor roller head 100 is, for example, held rotationally fixed to the shaft 101.

[0034] An exemplary retaining disc 103 (roller carrier section) is arranged on the smoothing cylinder 102 of the compressor roller head 100, wherein the retaining disc 103 is preferably held rotationally fixed on the shaft 101 and / or on the smoothing cylinder 102.

[0035] For example, several rollers 104 (e.g., called compressor rollers or press rollers) are arranged circumferentially on the retaining disk 103, in particular such that the rollers 104 move rotationally around the shaft 101 when the shaft 101 is rotated by the driven retaining disk 103 and / or the driven smoothing cylinder 102.

[0036] As shown by way of example in Fig. 2, the rollers 104 are rotatably mounted on axes 105 aligned parallel to the axial direction of the shaft 101. In the embodiment according to Figs. 1 and 2, the rollers 104 are not directly driven. In particular, the rollers 104 are mounted to rotate freely on the axes 105, the axes 105 being held in a rotationally fixed position on the retaining disk 103.

[0037] For example, the distributor roller head 200 is arranged above the compressor roller head 100. In the embodiment according to Figs. 1 and 2, the distributor roller head optionally includes an upper cover plate 209 for covering against concrete falling from above during the manufacturing process.

[0038] The compressor roller head 100 is driven, for example, via the hollow shaft 202, through which the, for example, coaxial shaft 101 extends, wherein the shaft 101 is preferably mounted coaxially and freely rotatable within the hollow shaft 201, so that the rotation of the shaft 101 and the rotation of the hollow shaft 201 from the outside or via connected drive shafts or directly connected drives is possible, in particular independently and preferably in opposite directions. The distributor roller head 200 comprises, for example (in particular optionally), a first roller carrier section 202, which is, for example, held non-rotatably on the hollow shaft 201. The roller carrier section 202 carries, for example, several rollers 203 (e.g., intermediate rollers), which are, for example, arranged circumferentially around the hollow shaft 202.

[0039] As shown by way of example in Fig. 2, the rollers 203 are rotatably mounted on axes 204 aligned parallel to the axial direction of the shaft 101. In the embodiment according to Figs. 1 and 2, the rollers 203 are not directly driven. In particular, the rollers 203 are mounted to rotate freely on the axes 204, the axes 204 being held in a rotationally fixed position on the first roller carrier section 202.

[0040] The distributor roller head 200 includes, for example, a second roller carrier section 205, which is, for example, fixed against rotation on the hollow shaft 201. The roller carrier section 205 carries, for example, several rollers 207a and 207b (e.g., distributor rollers), which are, for example, arranged circumferentially around the hollow shaft 202. For example, the lower rollers 207b are held below the roller carrier section 205, and the upper rollers 207a are held above the roller carrier section 205.

[0041] According to the invention, the rollers 207a and 207b are rotationally coupled, for example, in pairs, each with an upper roller 207a and a lower roller 207b rotationally coupled to it. In the exemplary embodiment shown in Figures 1 and 2, these rollers are held in pairs on a common shaft 208 in a rotationally fixed manner. Consequently, the respective pairs of rollers 207 form rotationally coupled roller pairs, so that the respective rollers 207a / 207b of the respective roller pair 207 (e.g., tandem roller) rotate together and also together with the shaft 208. In particular, the respective rollers 207a / 207b of the respective roller pair 207 are rotationally coupled, so that the upper roller 207a rotates when the lower roller 207b rotates, in particular in the same direction, and vice versa.

[0042] By way of example, the respective common shaft 208 of the respective roller pair 207 is held freely rotatable on the roller carrier section 205, here by way of example by means of a retaining bracket 206, wherein the shaft 208 is in each case oriented parallel to the axial direction of the shaft 101 or hollow shaft 201.

[0043] In the exemplary embodiment shown in Figures 1 and 2, the rollers 207a / 207b are not directly driven. Specifically, the rollers 207a / 207b, together with the common shaft 208, are mounted on the roller carrier section 205 so as to rotate freely.

[0044] In further embodiments, rollers 207a or 207b, or other rollers 104 and / or 203, can also be rotationally coupled to other rollers of the same or different planes, e.g., via a gear transmission. In such embodiments, rollers can preferably be rotationally coupled at least in pairs, e.g., via common axles / shafts and / or via gears (preferably with the same roller diameter and a transmission ratio of 1:1, or at least with a transmission ratio that is adapted to the same rotational speeds in the case of different roller diameters).

[0045] Preferably, in exemplary embodiments, such rotationally coupled rollers are not directly driven, i.e., they are only rotationally coupled to each other via gears, but not to the hollow shaft 201 (or shaft 101) or other external drives via gears. However, in the manufacturing process, the rotationally coupled rollers can preferably be "driven" by rolling on the inner walls of the concrete body to be formed, if the respective roller carrier sections rotate via the hollow shaft (or shaft 101).

[0046] An advantage can be achieved by ensuring that rollers that stop moving during the manufacturing process, for example due to jamming with small stones in the concrete, receive an additional torque from the other rotationally coupled roller(s). This reduces or even eliminates such undesirable stopping of the non-directly driven rollers, which occurs in devices of this type. This reduces uneven wear of the rollers and / or overall roller wear, thus significantly reducing maintenance-related downtime.

[0047] In embodiments according to Figs. 1 and 2, the rollers 203 (intermediate rollers) are arranged, for example, at the level of the roller carrier section 205 for the rollers 207a and 207b, i.e. in relation to the axial height between the upper rollers 207a and the lower rollers 207b of the respective roller pairs 207 of the distributor roller head 200 (see in particular Fig. 2).

[0048] Fig. 3 shows an exemplary schematic perspective view of a distributor and / or compressor device according to a further embodiment. In contrast to Figs. 1 and 2, the device optionally includes a distributor spiral 210 (e.g., also as a concrete pressure spiral). The following describes, by way of example, the application in the manufacturing process with reference to Fig. 3, which is also applicable analogously to Figs. 1 and 2.

[0049] For the production of a concrete pipe, the device (compactor head) with a rotating compressor roller head 100 (e.g., clockwise rotating in Fig. 3) and a counter-rotating (i.e., counterclockwise rotating) distributor roller head 200 is inserted into a pipe mold (as an exemplary outer shape). Between the compressor roller head 100 and the pipe mold is an annular gap (viewed from above), the width of which depends on the diameter of the device and the inner diameter of the pipe mold and corresponds to the desired concrete pipe type. This gap is filled with concrete from above. Reinforcement for reinforced concrete pipes can optionally be placed in the gap.

[0050] The concrete is flung outwards towards the pipe shape (outer shape) by centrifugal force from the rotating device. A somewhat wider wall of earth-moist concrete forms above the distribution rollers, particularly above the roller pairs 207 of the distribution roller head 200. This wall can be pressed downwards either (optionally) by the distribution spiral 207 or, in the case of larger pipes (e.g., larger than DN 600), by gravity.

[0051] The distributor rollers 207a / 207b of the roller pairs 207 and the rollers 203 roll a concrete pipe inside the pipe shape when the distributor roller head 200 rotates (e.g. counterclockwise), the concrete pipe having an inner diameter that is preferably smaller than or equal to the later inner diameter of the manufactured concrete pipe.

[0052] The following is an example of a clockwise rotating smoothing cylinder 102 with the compaction rollers 104 of the compaction roller head 100, which roll the pipe to a potentially slightly larger inner pipe diameter. The smoothing cylinder 102 smooths and calibrates the concrete pipe to the desired final diameter.

[0053] In the case of the exemplary centrally mounted roller pairs 207 (tandem roller), whose upper and lower rollers 207a and 207b are connected to each other by the common shaft 208, the concrete distribution and / or compaction can be carried out by means of the upper rollers 207a of the respective roller pairs 207.

[0054] Here, the rollers 207a push the fresh concrete ahead of them like a bow wave. While stones can become wedged between the roller shell and adjacent components, sufficient additional torque is provided by the other lower (rotationally coupled) roller 207b, so that the respective pair of rollers 207 (tandem roller) no longer remains stationary as a connected component.

[0055] The lower roller 207b of each roller pair 207 can roll on a concrete inner pipe surface already rolled out by the upper rollers 207 and no longer has to push a fresh concrete wave in front of it. There are no stones present to jam the roller 207b. Through the friction of the lower roller 207b against the concrete inner pipe surface, it transmits an additional torque via the connecting shaft 208 to significantly reduce or even prevent the rollers from stalling and the resulting wear.

[0056] Practical tests have shown that the number of production days until required maintenance can actually be significantly increased, in some cases by a factor of about 3 (e.g. 70 production days achieved instead of the usual 25 production days), and in particular, uneven wear can be prevented (i.e., even, slow wear of the multiple rollers).

[0057] Consequently, the present invention, based on the idea of ​​rotatorily coupled rollers on the distributor and / or compressor head, makes it possible to significantly reduce wear on the rollers and significantly increase the number of achievable production days, thus enabling more efficient manufacturing and avoiding downtime.

[0058] It should be noted that only examples and embodiments of the present disclosure, as well as technical advantages, have been described in detail above with reference to the accompanying figures. However, the present disclosure is in no way limited or restricted to the embodiments and their features or combinations described above, but also includes modifications of these embodiments, in particular those resulting from modifications of the features of the described examples or from combinations or partial combinations of one or more of the features of the described examples within the scope of protection of the independent claims.

Claims

Patent claims 1. Distributor and / or compressor device for use in the production of concrete bodies, in particular concrete pipes, using the radial pressing method and / or roller head method, comprising: - at least one rotatably driven distributor and / or compressor roller head (100; 200) with several compressor and / or distributor rollers (103, 104, 207a, 207b), wherein at least two compressor and / or distributor rollers (207a, 207b) of the at least one rotatably driven distributor and / or compressor roller head (100; 200) are rotatably coupled.

2. Distributor and / or compressor device according to claim 1, characterized in that the at least two rotary coupled compressor and / or distributor rollers (207a, 207b) are not directly rotary driven.

3. Distributor and / or compressor device according to one of the preceding claims, characterized in that the at least one distributor and / or compressor roller head (100; 200) has several pairs of rollers (207), wherein the compressor and / or distributor rollers (207a, 207b) of the respective pair of rollers (207) are each rotatorily coupled to each other in pairs.

4. Distributor and / or compressor device according to one of the preceding claims, characterized in that the at least two rotary coupled compressor and / or distributor rollers (207a, 207b) are rotaryally coupled to each other via a common shaft (208) in a rotationally fixed manner.

5. Distributor and / or compressor device according to claim 4, characterized in that the common shaft (208) is rotatably mounted on a rotatably driven roller carrier section (205).

6. Distributor and / or compressor device according to claim 5, characterized in that a first roller (207a) of the at least two rotatorily coupled compressor and / or distributor rollers (207a, 207b) is arranged in the axial direction above the roller carrier section (205), and / or a second roller of the at least two rotatorily coupled compressor and / or distributor rollers (207a, 207b) is arranged in the axial direction below the roller carrier section (205).

7. Distributor and / or compressor device according to one of claims 4 to 6, characterized in that a first roller (207a) of the at least two rotatably coupled compressor and / or distributor rollers (207a, 207b) is held rotatably at one end of the common shaft (208), and / or a second roller of the at least two rotatably coupled compressor and / or distributor rollers (207a, 207b) is held rotatably at an opposite end of the common shaft (208).

8. Distributor and / or compressor device according to one of the preceding claims, characterized by - a compressor roller head (100) with a smoothing cylinder (102) and / or several compressor rollers (103), and / or - a distribution roller head (200) with several compressor rollers (203, 207, 207b) comprising at least two rotary coupled compressor and / or distribution rollers (207a, 207b).

9. Distributor and / or compressor device according to one of claims 1 to 4, characterized in that the at least two rotary coupled compressor and / or distributor rollers (207a, 207b) are rotary coupled via a gearbox.

10. Plant for the production of concrete bodies, in particular concrete pipes, using the radial pressing method and / or roller head method, with an outer shape and a distributor and / or compressor device according to one of the preceding claims.

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