MIXING PLANT WITH ENCLOSURE

Description

[0001] The invention relates to a mixing plant, in particular a mobile or stationary one, comprising a portal unit, wherein the portal unit comprises at least one scale for weighing mix components, a mixer for mixing the components of the mix and a dispensing device for dispensing the mixed mix, and a housing, wherein the portal unit can be converted into a mountable and dismountable housing, wherein the housing can be assembled from transportable modules.

[0002] Such a mixing plant is disclosed in CN 104 972 565 A.

[0003] DE 10 2017 005 411 A1 discloses a device for producing asphalt with several individual, connectable modules in which devices for processing or producing the asphalt, in particular a mix and a binder, can be arranged, wherein each module has an identical base frame which can be configured by a limited number of possible expansion elements and add-on elements which are essential for the functionality of the device to be arranged in the base frame.

[0004] Truck mixers typically drive to stationary mixing plants to pick up concrete, which then fill the truck mixers with the concrete produced in the mixing plants. The concrete filled into the truck mixers is then transported to the construction site. However, such transport is uneconomical when large quantities of concrete are required for the construction of large structures, such as airports, dams, bridges, or tunnels, which then have to be transported over long distances because there is no mixing plant nearby. To supply large construction sites with concrete, it is therefore common practice to use a concrete mixing plant in the immediate vicinity. Since such mixing plants are only needed until the structure is completed, mobile mixing plants are used in these cases.

[0005] It is common practice to equip such mixing plants with an enclosure that protects the gantry unit from the elements and makes components such as the scales and mixer easily accessible for maintenance and repairs. Therefore, the enclosures typically have exterior walls and walkways that require complex attachment to the gantry unit.

[0006] In particular, in order to quickly and easily erect a mobile mixing plant from transport units suitable for road transport and also to dismantle it again into such transport units, DE 297 11 500 U1 proposes equipping the mobile mixing plant with posts that are pivotally connected to the gantry unit and can be pivoted from a transport position to an assembly position during assembly. An enclosure for the gantry unit is not provided for in this solution. The assembly and dismantling of an enclosure is time-consuming, so such an enclosure is usually omitted in order to speed up the assembly and dismantling of the mobile mixing plant on the construction site. This has the disadvantage that the gantry unit and the people working on it are exposed to the elements. This represents a serious problem in some climates.

[0007] It is therefore an object of the invention to provide an improved mixing plant which offers an effective, quickly assembled and disassembled enclosure of a portal unit and thus enables effective protection against the weather and easy access to the main components of the portal unit without significant time losses during assembly and disassembly.

[0008] This problem is solved by a mixing plant with the features of claim 1.

[0009] Because the mixing plant's enclosure can be assembled from transportable modules, each of which can be detachably coupled to the gantry unit. The modules are designed to be lifted onto the erected gantry unit by a mobile crane for coupling to the gantry unit, the enclosure can be quickly and easily assembled and disassembled on the gantry unit on site. With such an assembled and disassembled enclosure, the gantry unit of the mobile mixing plant can be quickly and easily protected from the elements, and the gantry unit's components, such as at least one scale and the mixer, can be easily accessed for maintenance and repair by personnel working on the gantry unit.The enclosure is constructed from transportable modules, each of which can be easily transported without the need for special permits. This allows the mixing plant and its enclosure to be transported without the need to register a heavy-duty transport. This reduces the costs of transporting the mixing plant and also makes it more flexible in terms of time. This not only speeds up the assembly and dismantling of the mixing plant and enclosure, but also transport between two construction sites. By simply coupling the modules to the gantry unit, the enclosure can be quickly assembled during assembly on the construction site. During dismantling, the modules can be very easily detached from the gantry unit and then transported individually to the next construction site. The transportable modules have dimensions that allow for easy transport on road traffic.

[0010] Advantageous embodiments and further developments of the invention emerge from the dependent claims. It should be noted that the features listed individually in the claims can also be combined with one another in any technologically expedient manner, thus revealing further embodiments of the invention.

[0011] According to an advantageous embodiment of the invention, the modules are self-supporting. With the self-supporting design of the modules, the enclosure can be easily transported in disassembled form, as the individual modules form compact and stable transport units that, like the portal unit, can be easily transported on a low-loader.

[0012] Particularly preferred is an embodiment that provides for the modules to be pre-assembled to one another using assembly devices. Pre-assembling the modules allows them to be assembled on the ground using the assembly devices. The module components pre-assembled using the assembly devices can then be quickly and easily coupled to the gantry unit. A mobile crane is used to couple the modules to the gantry unit, which lifts the modules, preferably in a pre-assembled state, to the erected gantry unit for coupling.

[0013] A particularly advantageous embodiment of the invention relates to the assembly devices being designed as pin-wedge connectors with spring pins. The pin-wedge connectors allow the modules to be pre-assembled and disassembled quickly and easily. The spring pins ensure a simple and quick securing of the connection between the modules pre-assembled via the assembly devices.

[0014] A particularly advantageous embodiment of the invention provides that the enclosure can be assembled from two pre-assembled side panels, a pre-assembled roof panel, and a front connecting panel and a rear connecting panel. This division of the enclosure allows for quick and easy assembly and disassembly on the portal unit. The division of the pre-assembled modules can also be implemented in other partitions. It is also conceivable to integrate functional components of the mixing plant into the individual modules if this is advantageous. The size of the enclosure can also be adapted, from an entire enclosure to the enclosure of individual levels.

[0015] An advantageous embodiment of the invention provides for the enclosure to enclose the gantry unit in the area of ​​the scale and mixer. The enclosure around the main components of the gantry unit provides particularly effective protection against the elements and makes them easily accessible for maintenance and repairs. Personnel working on the gantry unit can perform maintenance and repairs safely and securely via the enclosure.

[0016] A particularly advantageous embodiment provides for the housing modules to be detachably coupled to the portal unit via coupling devices. Using the coupling devices, the modules can be very easily connected to or separated from the portal unit. The coupling devices provide a secure and stable connection for forming a mixing plant unit consisting of the portal unit and the housing. The coupling devices provide a mechanically established connection between the modules and the portal unit. The mechanical connection via the coupling devices can be easily removed to detach the modules from the portal unit.

[0017] Existing mixing plants can also be easily retrofitted with an enclosure. To achieve this, the coupling devices described above and below are simply retrofitted to the portal unit.

[0018] Further features, details, and advantages of the invention will become apparent from the following description and from the drawings, which show exemplary embodiments of the invention. Corresponding objects or elements are provided with the same reference numerals in all figures. They show: Figures 1 and 2: a mixing plant according to the invention with an enclosure, Figure 3: the portal unit, Figure 4: an enclosure, Figure 5: a module with cladding, Figure 6: exploded view Figures 7 and 8: an assembly device, Figure 9: hanging in of side parts, Figure 10: the portal unit with side parts, Figure 11: the portal unit with dovetail guides, Figure 12: a module with retaining bolts in dovetail guides, Figure 13: a module with a hook, Figure 14: a detailed view of the hook, Figure 15: the fitting of a roof part and Figure 16: the portal unit with a roof part.

[0019] In the Figure 1 and the Figure 2Denoted by the reference numeral 1, a mixing plant according to the invention is shown. The mixing plant 1 has a portal unit 2, which is equipped with at least one scale 3 for weighing mix components, such as cement, water, and other additives, which are conveyed from silos with closed screw conveyors to the portal unit 2. In addition, the portal unit 2 has a mixer 4 arranged below the scales 3 for mixing the components of the mix. This mixer 4 can be designed as a twin-shaft mixer, as shown in Figure 1is indicated. Below the mixer 4, on the gantry unit 2, there is a discharge device 5 in the form of a discharge hopper for discharging the mixed material to a truck mixer moved up to the gantry unit. To feed the scales 3, the gantry device 2 has a feeding device 10 in the form of a feeder elevator. This feeder elevator 10 is usually fed via row silos for the tensile aggregates. The feeder elevator 10 is usually driven by a feeder drive 21, which is arranged on the gantry unit 2 above the at least one scale 3. For the binding agents, silos are set up near the gantry unit 2. These silos are connected via screw conveyors, which convey the cement contained in the silos into the scales 3. The gantry unit 2 also has a control container 11, from which the mixing plant 1 is controlled.The gantry unit 2 is enclosed by a housing 6, which encloses the gantry unit 2 in the area of ​​the scales 3 and the mixer 4. The main components of the gantry unit are easily accessible for repairs or maintenance work via the walkways 12 formed on the levels of the housing 6. Thanks to the support 20, the gantry unit 2 can be approached by truck mixers from a total of three sides.

[0020] The Figure 3 The portal unit 2 shown individually can be mounted and dismounted via the housing 6, which can be individually Figure 4shown. For this purpose, the housing 6 consists of individually transportable modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g, which can be combined to form the housing 6. The modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g can be detachably coupled to the portal unit 2. The housing 6 can thus be quickly and easily assembled and disassembled from the portal unit 2 on the construction site. The housing 6 can be assembled and disassembled quickly and easily, and the components of the portal unit 2, such as the scales 3 and the mixer 4, can be easily accessed for maintenance and repair by persons working on the portal unit 2.

[0021] Modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g of enclosure 6 are self-supporting. For protection against the elements, modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g can be fitted with cladding 13, which forms the outer walls of enclosure 6 when mounted on portal unit 2. Modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g can be covered with various surfaces 13, such as ISO panels, plastic sheeting, wood paneling, or similar. Furthermore, the walkways 12 from the stage levels of the enclosure 6 and also the access routes, such as ladders and / or stairs, to other levels can already be integrated into the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g. Instead of the cladding 13 by paneling, it is also possible to use a railing with a handrail as a fall protection device in order to use the system partially or entirely as an open system, for example, with only the roof 14.Due to the self-supporting structure of modules 7, 7a, 7b, 7c, 7d, 7e, 7f, and 7g, doors and windows can be installed in any suitable cladding area according to customer requirements. Figure 5 it is indicated that the claddings 13 are simply attached to the self-supporting structure of the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g.

[0022] The Figure 6shows an exploded view of the mixing plant 1 to illustrate the assembly of the modular housing 6 on the portal unit 2. The housing 6 consists of two pre-assembled side parts 7, 7a, 7b, 7c, a pre-assembled roof part 7d, 7e, and a front connecting part 7f and a rear connecting part 7g, which are assembled in a modular manner to form the housing 6. To assemble the housing 6 on the portal unit 2, the side parts consisting of two modules 7, 7a and 7b, 7c are first pre-assembled on the floor. The roof part of the housing 6, consisting of two modules 7d and 7e, can also be pre-assembled on the floor. Subsequently, the pre-assembled side parts 7, 7a, 7b, 7c are coupled one after the other to the portal unit 2, before the side parts 7, 7a, 7b, 7c are connected to each other on the portal unit 2, first via the front connecting part 7f and then via the rear connecting part 7g.The pre-assembled roof section 7d, 7e is then attached to complete the enclosure 6 of the portal unit 2. Disassembly of the enclosure 6 from the portal unit 2 is simply carried out in reverse order. The division of the enclosure 6 shown here enables quick and easy assembly and disassembly on the portal unit 2.

[0023] For pre-assembly and disassembly, the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g have corresponding assembly devices 8, which enable a simple connection of the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g to each other and a quick separation of the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g from each other. Such an assembly device 8 is in Figure 7 It connects to the Figure 4 The right side part 7b, 7c is connected to the roof part 7e at the marked location. The mounting device 8 is designed as a tenon-wedge connection and is secured with a spring pin 15.

[0024] In Figure 8The assembly device 8 is shown separately. Here, it can be seen that when the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g are connected, the pin 16 is received in the wedge 17. The spring pin 15 prevents the wedge 17 from slipping out of the pin 16. This connection via the assembly devices 8 can be easily established without tools for pre-assembly of the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g, and can be separated just as easily for disassembly of the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g.

[0025] The Figures 9 and 10 illustrate the process of coupling the side parts 7, 7a, 7b, 7c to the portal unit 2. To couple the side parts 7, 7a, 7b, 7c, they are simply hooked onto the side of the portal unit 2 using a mobile crane, as shown in Figure 10 can be seen.

[0026] The Figure 11shows dovetail guides arranged on the portal unit 2, which serve as coupling devices 9b between the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g and the portal unit 2. The modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g of the housing 6 can be coupled and detachably connected to the portal unit 2 via these coupling devices 9b. The dovetail guide 9b simplifies the exact positioning of the modules 7, 7a, 7b, 7c, 7d, 7e, 7f, 7g when coupling them to the portal unit 2. The modular housing 6 according to the invention can also be retrofitted to existing portal units 2; for this purpose, the coupling devices 9b are advantageously simply added subsequently.

[0027] In the Figure 12 The retaining bolts 9a arranged on the side parts 7, 7a, 7b, 7c can be seen, which engage in the corresponding dovetail guides 9b of the coupling devices. To make this engagement clearly visible, Figure 12only the dovetail guides 9b according to Figure 11 shown without the remaining portal unit 2. The retaining bolts 9a for hanging in the dovetail guides 9b are located within the floor support frame of the lower side module 7, 7b.

[0028] The Figure 13 shows hooks 9 arranged on the side parts 7, 7a, 7b, 7c, which serve as coupling devices. These hooks 9 are used to attach the modular side parts 7, 7a, 7b, 7c to the portal unit 2.

[0029] In Figure 14 is a detailed view of a coupling device 9 according to Figure 13 This illustration shows that the hook 9, or rather the module 7a, can be locked to the portal unit 2 via a latch 19 together with a pin 16 and a spring pin 15 in order to establish a secure connection between the suspended module 7, 7a, 7b, 7c and the portal unit 2.

[0030] In connection with the coupling devices 9, 9a, reference is again made to the Figure 9Reference is made here. A first, upper coupling device 9 can be seen, which is formed by a lockable hook 9. A second, lower coupling device 9a, arranged below the first coupling device 9, is additionally provided. The second coupling device is designed as a retaining bolt 9b. The module 7, 7a, 7b, 7c can be easily hooked onto the gantry unit 2 via the first coupling device 9 when coupling the mobile crane. For this purpose, the coupling device 9 has a corresponding hook receptacle on the gantry unit 2, into which the hook 9 can be hooked. The second coupling device 9a supports this coupling process, since the dovetail guide 9b on the gantry unit 2 simplifies the exact positioning of the modules 7, 7a, 7b, 7c on the gantry unit 2, which makes it easier to hook the hook 9 into the corresponding hook receptacle.This allows the modules 7, 7a, 7b, 7c of the enclosure 6 to be easily coupled to the portal unit 2 using a mobile crane.

[0031] The Figures 15 and 16 illustrate the assembly step of coupling the roof 7d, 7e with the portal unit 2 and the remaining enclosure 6. For coupling, the preassembled roof 14 is simply placed and bolted onto the portal unit 2 and the modules 7, 7a, 7b, 7c, 7f, 7g suspended from the portal unit 2 using a mobile crane. The construction of the enclosure 6 is designed such that the cement augers required for the mixing plant function can be guided through the cladding 13 of the enclosure 6 from one side or from up to three sides. List of reference symbols

[0032] 1 Mixing plant 2 Portal unit 3 Scale 4 Mixer 5 Discharge device 6 Enclosure 7 Side panel bottom left, 7a Side panel top left, 7b Side panel bottom right, 7c Side panel top right, 7d Roof panel left, 7e Roof panel right, 7f Connecting part front, 7g Connecting part rear (modules) 8 Tenon-wedge connection (assembly devices) 9 Hook, 9a Retaining bolt, 9b Dovetail guide (coupling devices) 10 Feeding device (feeder lift) 11 Control container 12 Walkways 13 Paneling 14 Roof 15 Spring pin 16 Tenon 17 Wedge 18 Floor support frame 19 Bolt 20 Support 21 Feeder drive

Claims

1. Mixing plant (1) having a portal unit (2), wherein the portal unit (2) comprises at least one scale (3) for weighing the components of the mixture, a mixer (4) for mixing the components of the mixture and a dispensing device (5) for dispensing the mixed mixture, and a housing (6), wherein the portal unit (2) can be converted from the mountable and demountable housing (6), wherein the housing (6) can be composed of transportable modules (7, 7a, 7b, 7c, 7d, 7e, 7f, 7g), characterised in that the modules (7, 7a, 7b, 7c, 7d, 7e, 7f, 7g) can be detachably coupled to the portal unit (2), wherein the modules (7, 7a, 7b, 7c, 7d, 7e, 7f, 7g) are designed to be lifted by a mobile crane to the erected portal unit (2) for coupling with the portal unit (2).

2. Mixing plant (1) according to claim 1, characterised in that the modules (7, 7a, 7b, 7c, 7d, 7e, 7f, 7g) are self-supporting.

3. Mixing plant (1) according to claim 1 or 2, characterised in that the modules (7, 7a, 7b, 7c, 7d, 7e, 7f, 7g) can be pre-mounted together using mounting devices (8).

4. Mixing plant (1) according to claim 3, characterised in that the mounting devices (8) are designed as pin-wedge connectors with spring cotter pins.

5. Mixing plant (1) according to any one of claims 1 to 4, characterised in that the housing (6) can be composed of two pre-mountable side parts (7, 7a, 7b, 7c), a pre-mountable roof part (7d, 7e) and a front connecting part (7f) and a rear connecting part (7g).

6. Mixing plant (1) according to any one of the preceding claims, characterised in that the housing (6) surrounds the portal unit (2) in the region of the scales (3) and the mixer (4).

7. Mixing plant (1) according to any one of the preceding claims, characterised in that the modules (7, 7a, 7b, 7c, 7d, 7e, 7f, 7g) of the housing (6) can be coupled to the portal unit (2) via coupling devices (9) and can be detached.