The reinforced modular screen is used as a component of the vibrating screen assembly, and the vibrating screen assembly is integrated with sorting equipment for sorting blocky and layered mineral aggregates; a system for securing adjacent units of the enhanced modular screen to a base of the vibrating screen assembly structure; mETHOD FOR ASSEMBLING / REMOVING SAID BASE

Abstract

The invention relates to an enhanced modular screen as a component of a vibrating screen assembly. The vibrating screen assembly integrates sorting equipment for sorting blocks and layers of mineral aggregates; a system for securing adjacent units of the enhanced modular screen to a base of the vibrating screen assembly structure; the invention relates to a modular screen matrix integrated with block-shaped and layered sorting screen assemblies, which represents an innovative solution beneficial to the mining industry, is particularly suitable for block-shaped and layered sorting after ore is extracted from an ore deposit, and can solve the ubiquitous problem that when the modular screen matrix integrated with the block-shaped and layered sorting screen assemblies is partially or completely replaced, the block-shaped and layered sorting screen assemblies cannot be replaced. And the maintenance downtime is too long. To this end, an enhanced fastening device (Fxa) is designed comprising an extension in the form of a dome (20c) in the body (20a) of an enhanced modular screen (20), and semicircular expansion tabs (20d), by aligning the two screens (20) and (20 '), the semicircular expansion tabs (20d) and (20d') being aligned with a fastening rod (Bu) in preparation for receiving a fastening pin (40).

Description

[0001] the term

[0002] In order to make the contents disclosed and claimed in the present invention better understood, the meanings of the terms and abbreviations mentioned many times in the specification are given below, among which:

[0003] Vibrating screen equipment: used specifically in the ore processing industry, such as coal, iron ore and other ores, to sort the ore according to size, for example after the crushing stage.

[0004] Sorting screen assembly: used for screening raw materials from ore processing, the sorting process is carried out according to block and layer (and other) specifications, including a plurality of modular screens, which are installed adjacent to each other and connected along a chassis base.

[0005] Modular screen: A screen unit mounted on a base, interconnected with a plurality of identical modular screens, which themselves constitute a screening component of a vibrating screening machine-type device, the design concept of which is based on a monolithic piece, the planar base of which has a set opening matrix, which can provide, for example, any given geometric profile, such as a "conical" profile, a "U"-shaped profile, etc., and is mounted on a base structure (e.g. a structural chassis).

[0006] Maintenance: For the purposes of this patent, maintenance is the act of maintaining, servicing, repairing or further preserving equipment, primarily equipment used in mining activities. Maintenance includes a range of operations that contribute to the proper functioning of equipment.

[0007] In this vein, maintenance is defined as the following types: corrective, preventive, predictive, detective, and for the purposes of this patent, the maintenance system is designed to excel at predictive maintenance.

[0008] Predictive maintenance: Actions taken based on changes in "condition" or "performance" parameters and systematically monitored. This type of maintenance aims to prevent equipment or system failures by monitoring multiple parameters to keep the equipment running continuously for as long as possible.

[0009] Corrective maintenance: Any maintenance performed to restore the machine equipment to its optimal, original operating condition by eliminating any possible sources of failure. This is a measure taken in response to the failure itself, where the downtime of the faulty equipment is unplanned and has a negative impact on the machine hour rate of a continuous flow activity such as mining.

[0010] Machine hour rate: the number of hours the machine is working.

[0011] RPM: revolutions per minute.

[0012] Ergonomics: Aims to develop the connection between people (in this case, workers) and work (maintenance of block and layer sorting screen components) comfortably and efficiently. By adapting working conditions to the characteristics of the workers, ergonomic risks can be avoided and improved health, comfort, safety and well-being can be ensured.

[0013] A person skilled in the art: According to the treaty drafters CHAVANNE, Albert and BURST, Jean-Jacques, in their work "Industrial Property Law" (Droit de Lá Propriété Industrielleto), published by Dalloz in 1993, page 5355: In a permissive way, this refers to an expert in the field, having a general and ordinary knowledge of the technology that will be the subject of analysis. For the purposes of this application, such an expert refers to a technician who knows the technical specifications of the equipment used in the mining process.

[0014] IPC: International Patent Classification.

[0015] In order to properly understand the present application, the list of terms, techniques and technical concepts proposed in this preliminary subject matter must be considered to provide the necessary descriptive sufficiency to the body of the specification and must be used as a reference for comparative analytical studies, both with the prior art solutions assumed, foreseeing the utility model, and with similar vibration mechanisms already disclosed or sold by third parties other than the present patent holder before or after the filing date. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] As a supplement to this specification, in order to better understand the prior art, the problems to be solved and the distinctive features of the present invention, this specification is accompanied by a set of drawings, in which:

[0017] Figure 1 is a schematic diagram of a vibrating screen apparatus, shown in perspective, showing block and layer sorting screen assemblies;

[0018] Figure 2 It is a schematic elevation view of a conventional block and layer sorting screen assembly, showing its basic design concept;

[0019] Figure 3 is a schematic diagram of a conventional modular screen, which integrates conventional cubic and laminar sorting screen components, and the present invention uses it as an example to determine the problem to be solved by the invention patent and prove its design concept;

[0020] Figure 4a yes Figure 2 A schematic diagram of an orthogonal view "XX" of a device showing a conventional fastening system used in the installation of a joint between two modular screens integrating a conventional block and layer sorting screen assembly;

[0021] Figure 4b yes Figure 4a An exploded schematic diagram showing components of a conventional fastening system used in the installation of a joint between two modular screens integrating a conventional block and layer sorting screen assembly;

[0022] Figure 5a and 5b yes Figure 2 Schematic diagram of an orthogonal view "XX" demonstrating the first step application of a conventional fastening system in the installation of a joint between two modular screens integrating a conventional block and layer sorting screen assembly;

[0023] Figure 6a and 6b yes Figure 2 A schematic diagram of an orthogonal view "XX" of a second step application demonstrating the use of a conventional fastening system in the installation of a joint between two modular screens integrating a conventional block and layer sorting screen assembly;

[0024] Figure 7a and 7b yes Figure 7a A schematic diagram of an orthogonal view "XX" of a . A third step application of a conventional fastening system in the installation of a joint between two modular screens integrating a conventional block and layer sorting screen assembly is demonstrated;

[0025] Figure 8a and 8b is a schematic diagram of the orthogonal view "XX" of Figure 8. It is demonstrated that the first step is to dismantle the modular screen integrating the conventional block and layer sorting screen assembly and gradually remove the components of the conventional fastening system when performing predictive or corrective maintenance operations;

[0026] Figure 9a and 9b yes Figure 2 The second step is to dismantle the modular screen integrated with the traditional block and layer sorting screen assembly, and partially dismantle the bushing part integrated with the traditional fastening system assembly, indicating that the ergonomics and maintainability of the part of the bushing at the base of the screen assembly chassis are poor;

[0027] Fig.10a and 10b yes Fig.10a Schematic diagram of an orthogonal view "XX" of the . Demonstrating the third step of disassembly of the modular screen integrating the conventional cubic and lamellar sorting screen assembly and complete disassembly of the modular rod relative to the chassis base which retains the lower part of the bushing inserted therein;

[0028] Fig.11An exploded view of a block and layer sorting screen assembly during maintenance. Evidence of damage to the modular screen structure and portions of the bushing remaining on the screen assembly chassis indicates that a longer period of time will be required to remove all residues in order to replace the modular screen being maintained;

[0029] Fig.12 is a schematic diagram of an enhanced modular screen that incorporates an enhanced block and layer sorting screen assembly that is the subject of the claims of the present invention;

[0030] Fig.13a yes Figure 2 A schematic diagram of an orthogonal view "XX" of a device demonstrating the use of an enhanced fastening system in a joint installation between two modular screens incorporating enhanced block and layer sorting screen assemblies;

[0031] Fig.13b yes Fig.12 An exploded schematic diagram of a. Demonstrates components of an enhanced fastening system used in the installation of a joint between two modular screens integrating an enhanced block and layer sorting screen assembly;

[0032] Fig.13c An exploded view of a portion of an enhanced block and layer sorting screen. Demonstrates an enhanced modular screen panel and an enhanced fastening system for two enhanced modular screen panels adjacent to the screen chassis;

[0033] Fig.14a and 14b yes Figure 2 A schematic diagram of an orthogonal view "XX" of a device demonstrating the first step in the application of an enhanced fastening system in the installation of a joint between two modular screens of an integrated enhanced block and layer sorting screen assembly;

[0034] Fig.15a and 15b yes Figure 2 A schematic diagram of an orthogonal view "XX" of a device demonstrating a second step in the application of an enhanced fastening system for mounting a joint between two modular screen panels of an integrated enhanced block and layer sorting screen assembly;

[0035] Fig.16a and 16b yes Figure 2 A schematic diagram of an orthogonal view "XX" of a modular mesh screen assembly incorporating an enhanced cube and sheet sorting screen assembly is shown to demonstrate that the first step in disassembling the modular mesh screen assembly in the context of predictive or corrective maintenance is to remove the portion of the assembly pin with an Allen head (or other specified) within the enhanced fastening system, demonstrating that the activity is ergonomic;

[0036] Fig.17a and 17b yes Figure 2 The schematic diagram in the orthogonal view "XX" of the , demonstrates the removal of the enhanced modular screen with integrated enhanced block and layer sorting screen assembly when performing predictive or corrective maintenance. The second step is to remove the enhanced modular screen assembly, separating the chassis base from the enhanced modular screen assembly, demonstrating the ergonomics of this activity;

[0037] Fig.18 is an exploded view of the block and layer sorting screen assembly, after the removal of the reinforced modular screens, showing that the chassis structure is free of any residual material and is ready to receive new modular screens, which shows that the time requirements of this activity are reduced and the removed reinforced modular screens are not damaged and can therefore be reused after meeting the technical requirements and being cleaned;

[0038] Fig.19 is an exploded view of a block and layer sorting screen assembly showing a second alternative way of reinforcing the modular screen with a protective cover for reinforcing the fastening means.

[0039] Fig. 20 is an exploded view of the protective cover showing the surrounding locking channels applying pressure to the locking protrusions on the domes on the sides of the modular screen. Technical Field

[0040] The application area of ​​this invention patent is industry and trade in vibrating equipment using mechanical vibration technology, with a particular focus on activities in the ore processing industry, especially for mining screening equipment, such as Figure 1 The device (Eq) in which the block and layer sorting screen assembly (Et) is specifically used, integrating the device (Eq) of this type, such as Figure 1 and Figure 2 shown.

[0041] It is to be added that although the invention defined in the present invention is researched and developed with mining activities as an example, the type of material fed to the vibrating screen equipment to which it is applicable is not limited to ores, but extends to practically all types of bulk materials, whether raw or processed, such as chemicals (e.g. fertility pesticides, agrochemicals, etc.).

[0042] Invention patent requirements

[0043] a. Introduction

[0044] The applicant designed this invention patent based on the technical expertise accumulated from many years of practice in developing mining plant equipment, which translated into exclusive insights into the advantages and limitations it discovered.

[0045] b. Invention requirements

[0046] Given the need to maintain the vibrating screening component (Et) of the mining screening equipment (Eq), such as Figure 1 and 2 As shown, more specifically, multiple modular screen elements (2) need to be disassembled / assembled, such as Figure 2 and 3 As shown, the applicant has identified the following needs in its maintenance activities (whether predictive maintenance or corrective maintenance):

[0047] b.1 From an industrial perspective

[0048] The ability to carry out maintenance activities, namely the replacement of modular screen units, in the shortest possible time mitigates the impact of productivity losses in the mining sector due to downtime of the main equipment vibrating screen (Eq), since one cannot but recognize that the mineral extraction activity in particular is a continuous activity and that the interruption of any one link in the mineral extraction process leads to damage to all the other links, since it is a continuous process.

[0049] Given that maintenance of the screen assembly (especially predictive maintenance) means removing all modular screens for cleaning and / or replacement, maintenance times for traditional screens will certainly have a negative impact on downtime.

[0050] b.2 From the perspective of technology / equipment

[0051] Whereas the block and layer sorting screen assembly (Et) comprises an assembly of a plurality of modular screens (2) which are mounted interconnected along a chassis base (1), see Figure 2 , the Applicant has not overlooked that, for this assembly, its modular screen (2) is generally made of a polymer material, more specifically an elastomer or a combination thereof, which gives it the properties of a rubber part, which is necessary for its specific application in vibrating screens used in mining, since this assembly is subjected to vibrations generated by an excitation device operating at very high revolutions per minute (RPM).

[0052] In view of this, taking into account the factor of "strong, uninterrupted vibration", the invention patent assumes that the fastening system (2) of these modular screens can achieve effectiveness by gradually increasing the stability of the assembly of multiple modular screens even if affected by vibration waves.

[0053] b.3 From the perspective of modular screen assembly / disassembly procedures

[0054] Providing a simple / quick maintenance procedure for workers performing maintenance on the block and layer sorting screen assemblies (Et), as the scope of maintenance to be performed may be applicable to replacing a single modular screen assembly (2), for example, in the case of corrective maintenance, such as Figure 2 and 3As shown, and in the case of predictive maintenance, it means removing and replacing all such modular screen assemblies (2), as shown in Figure 10.

[0055] b.4 From the perspective of occupational safety

[0056] Providing maintenance workers with an ergonomic, modular screen removal and replacement procedure(2) reduces physical stress and helps prevent workplace incidents and accidents.

[0057] Reduce the time workers are away from work due to equipment maintenance.

[0058] b.5 From the perspective of industry / company

[0059] Minimize total industry costs;

[0060] Maximizing the productivity of sorting operations of minerals extracted from deposits;

[0061] Minimize workplace accident compensation lawsuits filed by labor unions.

[0062] Scope of protection of invention patents

[0063] a. Idealized invention

[0064] In accordance with the requirements of invention patents, the following inventions are idealized in the same patent application, namely:

[0065] alFirst invention: Enhanced design of the body of a modular screen panel, which is part of a vibrating screen integrated with a block and layer sorting device for materials coming from mining (and related) activities, wherein the distinctive feature is its design concept, i.e. its body comprises at least one auxiliary bushing portion for pin-based fastening (conventional);

[0066] a.2 The second invention: A completely new joint fastening system is designed for fastening the reinforced adjacent modular screen units (from the first invention) to the structural base of the block and layer sorting vibrating screen assembly, wherein the distinguishing feature is that when two connected auxiliary fastening bushing sections enter the connection of two reinforced modular screens, a bushing element is formed; and

[0067] a.3 Third invention: A completely new procedure is designed for fastening the joints of the enhanced adjacent modular screen units (from the first invention) to the structural base of the vibrating screening assembly.

[0068] As the present invention will demonstrate, all three inventions meet the principle of unity of invention because they are not only interrelated but also share the same inventive concept.

[0069] b. Patentability requirements

[0070] The invention satisfies the requirements of novelty, inventive step and industrial applicability, since, as will be demonstrated, these techniques are not obviously derived from other prior art suitable for modular screens and their fastening systems to the chassis base of block and layer sorting screen assemblies, and offer advantages from a technical, industrial and commercial point of view, as will be demonstrated in the subsequent subject matter of the invention.

[0071] Finally, it can be asserted that a person skilled in the art or persons skilled in the art, when faced with the material disclosed in the art provided by the prior art, could not, by learning from it, arrive at the solution disclosed and claimed in the interrelated inventions of this patent. Background Art

[0072] In order to provide accuracy and consolidate the background explained in the introduction, the prior art in the form of block and layer sorting screen assemblies (Et), screening equipment (Eq) will be explained, e.g. Figure 1 and Figure 2 As shown, after rigorous analysis and evaluation by a person skilled in the art, it will be possible to determine its limiting aspects, thereby consolidating the aforementioned identification of the need for a patent for the invention.

[0073] a. Prior Art

[0074] alCurrent Conventional Technology

[0075] The applicant has recognized expertise in developing screening equipment (Eq) and can assert that there are countless known constructive configurations specifically for block and layer sorting screen assemblies (Et).

[0076] Just for cultural adaptation purposes, in order to better locate the application field of the present invention patent, it is worth mentioning that the Brazilian patent document number is DI MU 7701590-8, which is entitled "Layout of the modular assembly fixture of the screening machine for the mining industry", and its design concept is as follows Figure 2 As shown, it is shown that the screening machine assembly (Et) is composed of a plurality of modular screens, referred to as conventional modular screens (2) in the present invention, which are mounted on a chassis (2) of a vibrating screen (Et).

[0077] In turn, the screening machine (2) has, at its flat base (2a), a matrix (2b) of hollow elements, having various geometric shapes, such as "conical", U-shaped, etc.

[0078] In turn, on the sides of these screens (2), domes (2c) are provided, such as Figure 3 As shown, it is aligned with the fastening hole (1b) provided in the main body (1a) of the chassis base (1), as shown Figure 2 shown.

[0079] a.2 Similar prior art

[0080] It meets the objective of the invention patent now claimed, but upon critical analysis, its negative (or defective) aspects emerge and become part of the problem to be solved, thus incorporating the objective of the patent.

[0081] Therefore, the applicant defines as the close prior art of the invention what satisfies the assumptions of technical effectiveness, reliability and durability of the block and layer sorting screen assembly (Et), which has a direct relationship with the fastening system of two traditional modular screens (2).

[0082] A search in patent databases and even in the extensive literature of the mining sector has pointed out several solutions that meet the definition of close prior art, and the patent documents identified include in particular the Brazilian patent document numbered BR 112019005223-2A2, entitled “Wear protection lining arrangement and method of attaching a lining element to a support structure”, which has been selected as an example for the study and critical analysis to be described in the next paragraph.

[0083] a.2.1 Design concept: Based on a careful reading of the elements found in document D2 BR 112019005223-2A2, among which, Figure 2 , 3 As shown in 4a and 4b, the conventional block and layer sorting screen assembly consists of the following parts:

[0084] The chassis base (1) is made of metal material and comprises a main body (1a) in the form of a frame and a crossbar, and a fastening opening (1b) is provided on the surface of the main body for receiving locking elements of a fastening system of two conventional modular screens (2);

[0085] A plurality of conventional modular screens (2), each made of a polymer material, in particular an elastomer, which provides it with a certain degree of flexibility, comprising a body (2a), preferably rectangular, having a planar base provided with a matrix of hollow elements (2b), wherein a dome (2c) is provided in the middle of the side of the same body (2a), such as Figure 3 As shown, its function is to receive half of the conventional fixing device for fastening the conventional modular screen (2) to the chassis base (1);

[0086] Fastening means (Fx) assembled and fastened to a housing formed by adjacently positioned two domes (2c) of two corresponding conventional modular screens (2), such as Figure 2 As shown, it consists of three components:

[0087] (i) Tighten the bushing (3), such as Figure 4a and4b As shown, it is made of polymer material and comprises a base (3a) having a nominal diameter approximately equal to the diameter formed by connecting two domes (2c), under which two semicircular expansion plates (3b) are arranged, and the expansion plates have a transverse gap (3c);

[0088] (ii) The fastening pin (4) consists of a threaded body (4a) whose top is limited by a special head (4b) comprising a structured profile, which necessitates the use of a special screwing tool, which significantly limits the screwing / unscrewing operation of this conventional system.

[0089] (iii) A special screwing tool (not shown) whose matching profile complements the special profile of the head (4a) of the fastening pin (4).

[0090] a.2.2 Fastening procedure for two modular screens

[0091] The process is carried out using the traditional fastening method (Fx), the steps are as follows:

[0092] Step 1, such as Figure 5a and 5b As shown, a worker holds two conventional modular screens (2) and places them on top of the chassis base (1) so that the circular openings of two adjacent domes (2c) are located just above the corresponding fastening openings (1b);

[0093] Step 2, such as Figure 6a and 6b As shown, the worker holds the bushing component (3) and assembles it into an assembly consisting of two domes (2c) and a fastening opening (1b), and the semicircular expansion piece (3b) passes through the fastening opening (1b) of the chassis base (1) until the lower part of its base (3a) rests against the limit of the bottom of the dome (2c); and

[0094] Step 3, such as Figure 7a and 7b As shown, the worker uses a special screwing tool (not shown) to hold the pin part (4) and continue to position it above the central channel (3d) of the bushing (3). The pin (4) performs a downward rotation displacement movement, as shown in FIG. Figure 7a As shown, when the threaded body (4b) penetrates the central channel (3d), the semicircular expansion piece (3b), such as Figure 7b As shown, this creates an interference with the fastening opening (1b), thereby locking the conventional modular screen (2) to the chassis base (1), as shown in FIG. Figure 2 As shown;

[0095] a.2.3 Traditional Screen Maintenance Procedure

[0096] On an initial basis, the procedure is performed at the end of the service life of a conventional modular screen (2) when the plastic properties of the bushing assembly (3) degrade and begin to have a rigid or even brittle structure.

[0097] The process is performed by removing the traditional fastening device (Fx) and defines the following steps:

[0098] Step 1, such as Figure 8a and 8b As shown, the worker holds a special screwing tool (not shown), positions it and puts it on the special head (4a), and screws the pin (4) until it is completely removed. In this case, the bushing (3) is actually welded to the fastening opening (1b) because the bushing will lose its plastic properties if it is exposed to extreme environmental conditions for a long time.

[0099] Step 2, such as Figure 9a and 9b As shown, a worker needs to use a tool (Fe) such as a screwdriver or trowel to remove the bushing (3), which is a difficult procedure and may result in damage to the base (3a), but the protrusion (3e) remains in the fastening opening (1b) of the chassis base (1); and

[0100] Step 3, such as Figure 9a and 9b As shown, a worker separates the modular screen (2) of the chassis base (1) while holding the protrusion (3e) in the fastening opening (1b) of the chassis base (1).

[0101] b. Critical analysis of close prior art solutions

[0102] blFrom the perspective of the system that secures the modular screens to the base of the screen structure

[0103] This is a very complex system consisting of three components, of which the pin is a special part that requires the use of a screwdriver tool with a special coupling profile;

[0104] b.2 From the perspective of modular screen assembly procedures

[0105] It is necessary to align the dome (3c) of the conventional modular screen (2) with the fastening opening (1b) of the chassis base (1) without any support or guide points;

[0106] The bushing (3) needs to be placed in the fastening opening (1b) of the chassis base (1), an operation performed by applying impact force to the bushing (3) until its larger diameter body wins over and exceeds the opening (1b) of the chassis base (1), which can only be achieved after countless "blows", which leads to worker fatigue and waste of time to consolidate the subset of bushing (3) + dome (2c) + fastening opening (1b); and

[0107] The pin (4) must be screwed in together with the bushing (3) using a special screwing tool. The special wrench fits the axial groove in the head (4a) of the pin (4).

[0108] b.3 From the perspective of modular screen removal procedures

[0109] The pin (4) and bushing (3) can be removed by unscrewing the pin (4) and bushing (3) using a special screwdriver tool with a wrench that matches the axial groove in the head (4a) of the pin (4).

[0110] The bushing (3) is made of a polymer material, and as the service life of the conventional modular screen (2) is consumed, the bushing (3) is tightened by the pin (4), thereby losing its "elastic memory" property and becoming more rigid, and the stretched semicircular expansion piece (3b) becomes an obstacle to its removal from the fastening opening (1b) of the chassis base (3).

[0111] For this reason, Fig.11 As shown, a tool such as a trowel (Fe) is used to remove the remaining protrusions (3e) and the rigid semicircular expansion piece (3b), which generates a large pull-out force, resulting in an ergonomically unfriendly situation and causing physical stress on the worker, and also takes a long time to remove the modular screen.

[0112] c. Causes of the problem

[0113] More broadly, the problem of poor ergonomics when assembling and disassembling a conventional modular screen (2) of a screen assembly is caused by its conventional fastening system (Fx) which is complex and causes structural degradation of the modular screen (1) during its service life, particularly the bushing (3). Summary of the invention

[0114] a. Purpose

[0115] A first purpose of the present invention is to meet the above needs by providing workers who carry out the assembly and disassembly of the various modular screens with ergonomic operations that make the corresponding activities more excellent, thereby reducing the time required for assembly and replacement during maintenance (predictive and / or corrective, if applicable) of the vibrating screen assembly itself.

[0116] A secondary object of this patent is to allow the use of conventional bolts (pins) and various types of head specifications, particularly including hex socket heads, to secure the modular screens to the chassis base of the screen assembly.

[0117] A third object of the present patent is to allow the use of conventional screwdriver tools to tighten and / or remove the fastening bolts.

[0118] b. Unique Features

[0119] To achieve the object of the present invention, a system for fixing modular screen panels to a chassis base is designed which simplifies the design without sacrificing its necessary performance.

[0120] To this end, we designed an enhancement that integrates the modular screen and fastening bushing assembly into one component in an entirely new way.

[0121] With this improvement, the assembly, fastening and disassembly procedures of the modular screen panels on the chassis base of the block and layer sorting screen assemblies are simplified. DETAILED DESCRIPTION

[0122] The following detailed description must be read and understood in conjunction with the accompanying drawings provided, and describes the preferred construction of the reinforced modular screens (20), the system for fastening the reinforced modular screens (20) to the chassis base (1) of the block and layer sorting screen assemblies, and the assembly and disassembly procedures of these reinforced screens (20), but is not intended to limit the scope of the invention, which is limited to that provided in the claims.

[0123] a.Technical basis

[0124] In terms of basic design, it retains the block and layer sorting screen components (Et), such as Figure 2 As shown, it is formed by a chassis base portion (1) which supports the assembly and joint fastening of a modular screen matrix, wherein reinforced modular screen portions (20) and a system for enhancing the joint fastening between modular screens (20) are positioned adjacent to each other, as described in detail below.

[0125] b. Enhanced modular screen (20)

[0126] Fig.12 , 13aand 13b show a preferred structure of a reinforced modular screen (20), made of a polymer material (in particular an elastomer), which provides it with a certain degree of flexibility, comprising a body (20a), preferably rectangular, whose planar base is provided with a matrix of hollow elements (20b), wherein a dome (20c) is provided in the middle part of the side of the same body (20a), and adjacent to the side edge of each dome (20c) is a protrusion in the form of a semicircular expansion piece (20d), which is provided with a gap (20e) in a lateral position, thereby providing an area for receiving half of a fastening pin (4) integrating an enhanced fastening device (Fxa).

[0127] c. Enhanced fastening device (Fxa)

[0128] The fastening means allow adjacently placed reinforced modular screens (20) (Un) to be fastened to fastening openings (lb) provided in the body (la) of the chassis base (1) of the block and layer sorting screen assembly (Per), such as Fig.13c As shown, this enhanced fastening device (Fxa) is as Fig.13a and 13b As shown, it consists of only three components, which are described as follows:

[0129] The main dome (Ca) is formed by connecting the dome (20c) and the dome (20c'), and the dome is composed of two reinforced modular screens (20) and (20'), which are placed adjacent to each other, such as Fig.13b As shown;

[0130] The fixing bar (Bu) is formed by the connection between the semicircular expansion pieces (20d) and (20d'), and the two reinforced modular screens are placed adjacent to each other, such as Fig.13b As shown;

[0131] The fastening pin (40) is specifically a bolt having a threaded body (40a) and a hexagon socket head (40b), which is a widely available bolt on the market, i.e., not a special bolt, so the enhanced fastening device (Fxa) is added to reduce the cost, such as Fig.13b shown.

[0132] c. Enhance the fastening procedures between modular screens

[0133] The process is carried out using an enhanced fastening device (Fxa), such as Fig.13b As shown, the steps are as follows:

[0134] Step 1, such as Fig.14a and 14b As shown, a worker holds two adjacently placed reinforced modular screens (20), such as Fig.13cAs shown, the fastening rod (Bu) is positioned above the fastening opening (1b) of the chassis base (1), and the fastening opening (1b) passes through the fastening opening (1b) of the chassis base (1) until the main body (20a) of the screen (20) is located at the limit above the main body (1a) of the chassis base (1);

[0135] Step 2, such as Fig.15a and 15b As shown, the worker uses a conventional screwdriver tool (not shown) to hold the fastening pin (40), proceeds to position it in the main dome (Ca) formed by the connection of two adjacent domes (20c), and begins to screw it into the fastening rod (Bu) until the limit of its threaded path, continuing to unfold the semicircular expansion pieces (20d) and (20d') that reinforce the modular screens (20) and (20'), respectively, thereby consolidating the latter's locking and stability in the chassis base (1).

[0136] d. Enhanced screen maintenance procedures

[0137] This is the procedure for disassembling the reinforced modular screen (20) for cleaning, repair or replacement, proceed as follows:

[0138] Step 1, such as Fig.16a and 16b As shown, the worker holds a conventional screwdriver tool (not shown) and continues to remove the fastening pin (40), such as Fig.16a As shown, the fastening rods (Bu) formed by the semicircular expansion pieces (20d) and (20d') of the reinforced modular screens (20) and (20') are respectively kept in an expanded state (because they are always in this state during the service life of the screens),

[0139] Step 2, such as Fig.17a and 17b As shown, the worker proceeds to remove the reinforced modular screen (20) from its contact with the chassis base (1), wherein it can be verified that the semi-circular expansion pieces (20d) and (20cT) can be easily removed from the reinforced modular screens (20) and (20') even when expanded.

[0140] e. Technical effects achieved

[0141] From the perspective of strengthening the fastening device

[0142] It is a simple system consisting of two components, wherein the fastening pin (40) is a commercially produced, for example, hexagon socket head bolt or similar bolt, allowing the use of conventional screwdriver tools.

[0143] b.2 From the perspective of modular screen components

[0144] Elements constituting the fastening bars (Bu), semicircular expansion pieces (20d) and (20d') are integral parts of the reinforced modular screens (20) and (20'), which make it easier to assemble them through corresponding fastening openings (1b) of the chassis base (1) of the reinforced screen assembly (Per), which is easy to achieve and reduces worker fatigue and assembly time;

[0145] b.3 From the perspective of modular screen removal

[0146] The fastening bushing (Bu) can be easily removed by unscrewing the fastening pin (40) with a conventional screwdriver tool;

[0147] Even if the semicircular expansion pieces (20d) and (20d') are expanded, they can be removed very easily from the inside of the fastening opening (1b) because they are integral with the main body (20a) of the corresponding reinforced modular screens (20) and (20'), which makes them play a supporting role when removed, such as Fig.17a and 17b As shown;

[0148] Therefore, the possibility of the semicircular expansion pieces (20d) and (20d') being broken or stuck in the fastening opening (1b) is reduced, which makes the work of preparing the chassis base (1) more efficient and faster, such as Fig.18 as shown; and

[0149] Since the reinforced modular screens (20) and (20') are easily disassembled, it can be verified that the damage to their structure is minimal, such as Fig.18 As shown, in particular in the area (SP) of the domes (20c), this is due to the state they are in during their useful life cycle before replacement, if any.

[0150] The selection of the preferred construction of the invention as part of the present patent, as described in this detailed subject matter, is for illustrative purposes only. Any other construction may be designed by a person skilled in the art without departing from the objects disclosed in this patent and the inventive concepts applicable thereto, which are specifically defined by the appended claims.

[0151] In this way, in an auxiliary configuration of the enhanced fastening system, the head (40b) of the fastening pin (40) can be covered by the protective cover (50), such as Fig.13c As shown, this prevents particles in the ore poured from the screen (Per) from damaging the pin (40) + fastening rod (Bu) system.

[0152] Likewise, in this alternative configuration, the orthogonal lengths (20d) of the reinforced modular screen (20) are in the form of semi-circular petals with tapered edges, such as Fig.19As shown, the dome (20c) thereof has a defined protrusion (20e) with which a channel (50b) provided in the body (50a) of the cover (50) can cooperate and lock, as shown in FIG. Fig. 20 shown.

[0153] The same applies to the enhanced modular screen (20), which may have a pair of domes (20c), with expansion plates (20d) only on the two side edges parallel to the main body (20a), such as Fig.19 shown.

[0154] Finally, the fastening pin (40) may also be alternatively provided with a body having threads (40b), such as a pin or a bolt, for use with any type of thread.

[0155] It can therefore be seen from the above description and illustrations that what is now claimed as “the reinforced modular screen as part of a vibrating screen assembly incorporating block and layer sorting equipment for sorting mining materials, a system for jointly fastening adjacent reinforced modular screen units to a structural base of the vibrating screen assembly, and a method for assembling / disassembling the base” complies with the rules governing patents for such inventions under the Industrial Property Law and, in view of what has been explained and the consequences thereof, deserves the corresponding privileges.

Claims

1. A reinforced modular screen, assembled in matrix form and fixed to a chassis base (1) of a block and layer sorting screen (20), the screen (20) being made of a polymer material, in particular an elastomer, which provides it with a certain degree of flexibility, the reinforced modular screen comprising a body (20a), preferably rectangular, whose planar base is provided with a matrix of hollow elements (20b), wherein: On the side portion of the same body (20a), at least one dome (20c) is provided, wherein, starting from said dome (20c), an orthogonal extension is formed in the form of a semicircular expansion piece (20d).

2. The reinforced modular screen according to claim 1, characterized in that: The semicircular expansion piece (20d) is provided with a gap (20e) in a lateral position.

3. A joint fastening system, applied to the adjacently arranged reinforced modular screens (20) and (20') of claim 1, characterized in that: The invention comprises the following parts: a main dome (Ca), which is formed by the connection between the dome (20c) and the dome (20c') in two adjacently arranged reinforced modular screens (20) and (20'); a fastening rod (Bu), which is formed by the connection between the semicircular expansion pieces (20d) and (20d') in the two reinforced modular screens (20) and (20') and the fastening pin (40), wherein the fastening pin (40) is a bolt, comprising a threaded body (40a) and a head (40b).

4. The joint fastening system according to claim 1, characterized in that: The fastening pin (40) has a hexagonal head (40b) and is covered with a protective cover (50).

5. An assembly procedure for fastening two reinforced modular screens (20) (20') according to claims 1 and 2 with reinforced fastening means (Fxa), characterized in that: Follow these steps: Step 1, a worker holds two adjacently placed reinforced modular screens (20), positions a fastening rod (Bu) above the fastening opening (1b) of the chassis base (1), and passes the fastening rod (Bu) through the fastening opening (1b) of the chassis base (1) to an extreme position, wherein the main body (20a) of the reinforced modular screen (20) rests against the main body (1a) of the chassis base (1); as well as In step 2, the worker holds the fastening pin (40) and uses a conventional screwdriver tool (not shown) to position the fastening pin (40) in the main dome (Ca) formed by connecting two adjacent domes (20c), and begins to screw the fastening pin (40) into the fastening rod (Bu) until the end of the thread of the fastening pin (40), while expanding the semicircular expansion pieces (20d) and (20d') of the enhanced modular screens (20) and (20') respectively, thereby consolidating the locking and stability of the enhanced modular screens (20) and (20') in the chassis base (1).

6. A disassembly procedure for the reinforced modular screen (20) and the reinforced fastening device (Fxa) of claims 1 and 2, characterized in that: Follow these steps: Step 1, a worker holds a conventional screwdriver tool (not shown) and removes the fastening pin (40), the fastening rod (Bu) is formed by the semicircular expansion pieces (20d) and (20d') of the reinforced modular screen (20) and (20'), and the semicircular expansion plates (20d) and (20d') are respectively kept in an expanded state (because the semicircular expansion pieces (20d) and (20d') are in an expanded state during the service life of the screen); and In step 2, the worker continues to remove the reinforced modular screen (20) from the contact with the chassis base (1), and the semicircular expansion pieces (20d) and (20d') are verified to be able to be easily removed from the reinforced modular screens (20) and (20') respectively even when they are still in the expanded state.

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