Universal longitudinal beam tube

Abstract

A longitudinal beam tube (30) is provided for a vibrating screen (10) having different screen plates (22). The longitudinal beam tube (30) comprises an elongated body defining a longitudinal axis (33) and has a plurality of longitudinally spaced elongated slots (42) in a top wall (34) along the longitudinal axis (33) and a plurality of transverse supports (44) defined by the top wall (34) extending generally transversely to the longitudinal axis (33) between two adjacent elongated slots (42). The elongated slots (42) are configured to cooperatively receive the lower portions (68) of different clamps (32) on which the screen plates (22) are mounted or otherwise supported.

Description

Technical Field

[0001] The present invention relates to a longitudinal beam tube, and more particularly to a general longitudinal beam tube for use with a vibrating screen, especially for size classification. Background Technology

[0002] Vibrating screens are used in mining for a variety of purposes, including: sorting (separating materials based on their size); dewatering (involving the removal of process water from ore); heavy media recovery (involving draining and flushing to recover the media) and media recovery for reuse in processes (e.g., ferrosilicon or magnetite); screening out coarse materials (removing coarse material during primary and secondary crushing); waste removal (screening out gravel, wood, and oversized materials); grading (preparing products within a specific size range); and desliming (e.g., removing materials smaller than 500 μm).

[0003] Conventional vibrating screens typically have a chassis with two opposing sidewalls and a support member in the form of a square hollow cross-section beam extending laterally between the sidewalls. Multiple parallel longitudinal beam tubes are mounted to the beams and extend longitudinally (i.e., perpendicular to the beams) for substantially the entire length of the screen. Each longitudinal beam tube is typically a C-shaped hollow tube with an opening on its upper surface. The longitudinal beam tubes serve as supports to which removable plates are mounted. The plates are typically mounted to the longitudinal beam tubes using clamps. Sometimes, additional supports are provided in the form of pins welded between the opposing arms of the C-shaped hollow tubes. This is to prevent the opposing arms from opening and releasing the clamps. Including welded pins increases the cost of manufacturing these longitudinal beam tubes.

[0004] There are many types of vibrating screens that utilize different types of screen surfaces (e.g., laterally tensioned screen surfaces, WS85 screen surfaces, and snap-fit ​​screen surfaces), and each of these types uses a different longitudinal beam tube design, which increases the inventory of companies that own or maintain such vibrating screens.

[0005] One of the objectives of the embodiments of the present invention is to eliminate or mitigate the above-mentioned disadvantages or other disadvantages of the prior art, or to provide a useful alternative.

[0006] Unless otherwise stated, the various aspects detailed below are independent of each other. Unless technically impractical, a feature of one aspect may be combined with any other aspect to create a new aspect. However, no claim corresponding to one aspect should be construed as incorporating any element or feature of other aspects unless expressly stated in that claim. Summary of the Invention

[0007] The present invention is provided to introduce a series of concepts further described in the detailed embodiments described below. The present invention is not intended to identify essential features of the claimed subject matter, nor is it intended to help limit the scope of the claimed subject matter.

[0008] In this application, ordinal numbers (first, second, third, etc.) are arbitrarily assigned herein and are used to distinguish parts, but do not indicate a particular order, sequence or importance.

[0009] According to a first aspect, a universal longitudinal beam tube for a vibrating screen is provided, the longitudinal beam tube comprising: an elongated body defining a longitudinal axis along its length, the elongated body having a top wall, an opposing bottom wall, and a first side wall and a second side wall extending on opposite sides of the elongated body between the top wall and the opposing bottom wall; a plurality of longitudinally spaced elongated slots extending in the top wall along the longitudinal axis; and a plurality of transverse supports defined by the top wall extending substantially transversely to the longitudinal axis between the first side wall and the second side wall and between two adjacent elongated slots, thereby providing additional support to prevent the first side wall and the second side wall from opening and to prevent the elongated slots from deforming during use.

[0010] The longitudinal beam tube may further include a plurality of mounting features located in opposing bottom walls for mounting the longitudinal beam tube to a crossbeam, which extends laterally below the longitudinal beam tube during installation. The mounting features may be longitudinally spaced along opposing bottom walls and correspond to the positions where the longitudinal beam tube covers the crossbeam. In a preferred embodiment, each of the plurality of mounting features may include one or more mounting holes. More specifically, each mounting feature may include three longitudinally spaced mounting holes.

[0011] The longitudinal beam tube may also include a gap opening in the top wall, which is axially aligned with the mounting hole. The perimeter of the gap opening may be enlarged relative to the perimeter of the mounting hole, thereby allowing the head of the crossbeam fastener and / or washer to pass through the gap opening and engage the area around the mounting hole.

[0012] The front portion of the longitudinal beam tube can be formed to accommodate at least a portion of the discharge nozzle of the vibrating screen. In a preferred embodiment, the general-purpose longitudinal beam tube includes a cutout extending through the top wall at the front portion, such that the front portion is substantially U-shaped. The front portion of the longitudinal beam tube may further include at least one aperture extending through the bottom wall at the front portion to operably accommodate fasteners, thereby releasably securing the discharge nozzle to the front portion of the longitudinal beam tube. The longitudinal beam tube may include at least one substantially tubular spacer axially aligned with the at least one aperture. Preferably, the longitudinal beam tube includes two apertures and two substantially tubular spacers axially aligned with the two apertures. It should be understood that the tubular spacers may be formed separately from the longitudinal beam tube and welded to the front portion of the longitudinal beam, but other configurations are also possible.

[0013] Each longitudinal slot can be configured to receive at least one clamp, and when the at least one clamp is installed, the screen plate can engage with the top surface of the at least one clamp or be otherwise supported by the top surface. The longitudinal slots can be configured to engage different variations of the clamp, wherein each clamp is configured to support a different screen plate, such as a woven wire screen plate, a polyurethane screen plate, etc.

[0014] The rear end of the longitudinal beam tube can be connected to the vibrating screen via a support bracket. The rear end may include holes in a first side surface and a second side surface, the holes corresponding to holes in the support bracket to releasably secure the support bracket to the longitudinal beam tube. It should be understood that other configurations are also possible.

[0015] According to a second aspect, a screen assembly for mounting screen plates on a vibrating screen is provided, the screen assembly comprising: a universal longitudinal beam tube according to a first aspect, the universal longitudinal beam tube being fixable to a crossbeam of the vibrating screen; and at least one clamping rail comprising: an elongated base; a lower portion sized to cooperateably fit into one or more elongated slots in the longitudinal beam tube such that the at least one clamping rail extends substantially the entire length of the top wall of the longitudinal beam tube; and an upper portion defining a retaining member that engages or otherwise supports a plurality of screen plates in use.

[0016] The base of the clamping rail may have a substantially flat underside, with a lower portion extending from said lower surface. In use, when the lower portion is received in one or more elongated slots within the elongated slots, the flat underside can abut against the top wall of the longitudinal beam tube to resist vertical loads applied to the clamping rail.

[0017] The lower portion of the clamping rail may include two grooves that extend longitudinally along substantially the entire length of the lower portion on opposite sides, such that the top wall of the longitudinal beam tube on the opposite side of the elongated slot is received in the grooves to secure the clamping rail to the longitudinal beam tube.

[0018] In one example embodiment, the clamps can be configured to be received in two or more adjacent elongated slots. The lower portion of the clamp may include transverse grooves corresponding to transverse supports in the top surface of the longitudinal beam tube. Alternatively, the clamps may be configured to be received in a single longitudinal slot. The upper portion of the clamp may extend longitudinally beyond the lower portion, thereby allowing the ends of adjacent clamps to abut against each other. It should be understood that, in a preferred embodiment, the screen assembly may include a plurality of clamps positioned adjacent to each other in the elongated slots such that the plurality of clamps extend substantially the entire length of the top surface of the longitudinal beam tube.

[0019] It should be understood that the upper portion of the clamping rail can have different shapes to engage or otherwise support different screen plates. In a first example where the screen assembly is used with a WS85 plate, the upper portion includes a retaining member extending along the length of the upper surface of the base and configured to cooperatively engage an opening in the screen plate. The retaining member includes a circular upper portion integrally formed with the upper portion of the support member. The retaining member further has a vertical straight piece extending laterally from the circular upper portion such that the vertical straight piece is positioned between the sides of two adjacent screen plates during installation. In a second example where the screen assembly is used with snap-on screen plates, the upper portion of the clamping rail may include two retaining members extending substantially parallel to each other along the top surface of the base and configured to cooperatively engage an opening in the screen plate. Each retaining member may include a support extending from the top surface of the base and a cylindrical head located at the upper end of the handle. In a third example where the screen assembly is used with a braided wire screen plate, the clamping rail has a substantially convex upper portion extending above the base. The height of the clamping rails (more specifically, the thickness of the base) can be varied, allowing different clamping rails to be fixed to adjacent longitudinal beam tubes to provide convex profiles between the sides of the screen.

[0020] According to a third aspect, a vibrating screen is provided, comprising: a chassis including opposing sidewalls and a plurality of longitudinally spaced crossbeams extending between the opposing sidewalls, wherein the upper surfaces of the crossbeams form a support base; a plurality of laterally spaced screen assemblies according to a second aspect, each screen assembly including a universal longitudinal tube fixed to the support base and at least one clamping rail fixed to the universal longitudinal tube, wherein the screen assembly is mounted transversely to the crossbeams; and a plurality of screen plates fixed to or otherwise supported by the upper portions of the one or more clamping rails of the plurality of screen assemblies.

[0021] The mounting holes of the multiple longitudinal tubes can be axially aligned with the holes in the transverse members, thereby allowing the longitudinal tubes to be detachably fixed to the transverse members.

[0022] The vibrating screen may further include multiple discharge nozzles fixed to the front end of the longitudinal beam tubes. The discharge nozzles may be fixed between two adjacent longitudinal beam tubes.

[0023] The vibrating screen may further include wedge-shaped bars extending inward along the interior of opposite sidewalls, the wedge-shaped bars being configured to apply a downward clamping force on opposite sides of the screen plate adjacent to the opposite sidewalls. The wedge-shaped bars may extend substantially the entire length of the screen.

[0024] The vibrating screen may also include a discharge nozzle liner, which is fixed close to the interior of the opposite sidewall adjacent to the discharge nozzle to prevent wear on the opposite sidewall and to apply a downward clamping force to the side of the discharge nozzle adjacent to the opposite sidewall.

[0025] Vibrating screens may include bridging elements extending between opposing sidewalls.

[0026] The bridging element can accommodate or otherwise support a drive mechanism that applies movement to the screen surface (or multiple screen surfaces). It should be understood that other configurations are also possible. Screen surface assemblies and screen plates can be mounted on the screen surface (or each screen surface).

[0027] The drive mechanism may include actuators. Optionally, a pair of actuators may be provided, each actuator in the pair including a gearbox coupled to the unbalanced mass block on each side, wherein the gearbox causes the unbalanced mass block to rotate in the opposite direction (i.e., the actuator causes the unbalanced mass block to rotate in the opposite direction). Attached Figure Description

[0028] These and other aspects of the invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 This is a top perspective view of a vibrating screen according to an example of this disclosure; Figure 2 It is along Figure 1 A partial cross-sectional view of line AA of the vibrating screen; Figure 3 yes Figure 2 Detailed view of section C of the vibrating screen; Figure 4 It is along Figure 1 A cross-sectional view of the vibrating screen line BB; Figure 5 This is a top perspective view of a vibrating screen according to a second embodiment of the present disclosure; Figure 6 It is along Figure 5 A partial cross-sectional view of the line DD of the vibrating screen; Figure 7 This is a top perspective view of a vibrating screen according to a third example of this disclosure; Figure 8 It is along Figure 7 A partial cross-sectional view of the line EE of the vibrating screen; Figure 9 This is based on one aspect of the disclosure. Figure 1 Top plan view of the longitudinal beam tube of the vibrating screen; Figure 10 yes Figure 9 Bottom plan view of the general longitudinal beam tube; Figure 11 yes Figure 9 Side view of a general longitudinal beam tube; Figure 12 yes Figure 9 The upper perspective view of the general longitudinal beam tube; Figure 13 This is based on another aspect of this disclosure. Figure 1 A side view of the screen surface assembly of a vibrating screen; Figure 14 yes Figure 13 First perspective view of the screen assembly; Figure 15 It is along Figure 13 A cross-sectional view of line GG of the screen assembly shown; Figure 16 Is with Figure 15 A similar view shows a second instance of the screen assembly; and Figure 17 Is with Figure 15 A similar view shows a third instance of the screen assembly. Detailed Implementation

[0029] First refer to Figure 1 , 5 Figures 7 and 8 illustrate schematic diagrams of vibrating screens 10, 100, and 200 in which multiple screen assembly 12, 112, and 212 are used. Vibrating screens are known for separating materials according to their size or separating slurries of materials into liquid and solid components. The vibrating screen receives materials (such as aggregates, rocks, gravel, slurries, mineral solutions, etc.) through a feed zone 14 above screen surfaces 16, 16', and 16'', allowing particles or liquids smaller than the pore size (not shown) to fall through and be conveyed to a fine particle (or liquid) discharge zone (typically indicated by arrow 20); while coarse particles remain on top of screen plates 22, 122, and 222 and exit the vibrating screen at a coarse particle discharge zone (typically indicated by arrow 24). Screen surfaces 16, 16', and 16'' include removable screen plates 22, 122, and 222, which typically belong to one of three well-known types. Figure 1 The image shows a polyurethane sieve plate, more specifically a WS85 sieve plate 22. Figure 5 The image shows a second example of a vibrating screen 100, which has another type of polyurethane screen plate, more specifically a snap-fit ​​screen plate 122. Figure 7 The image shows a third example of a vibrating screen 200, in which the screen plate is in the form of a profile screen plate 222 composed of parallel, slender profile screen lines. Previously, different longitudinal beam tube designs were required to accommodate different screen plates, which increased the inventory of companies that owned or maintained such vibrating screens.

[0030] Vibrating screens 10, 100, and 200 include a pair of upright sidewalls 26a and 26b, which are laterally spaced and extend longitudinally for substantially the entire length of the screen 16. A plurality of longitudinally spaced crossbeams 28 extend between the pair of upright sidewalls 26a and 26b, and the upper surface of each crossbeam 28 forms a generally flat support base. In other embodiments, the support base may define a curved profile when viewed from one side. In this embodiment, each crossbeam 28 has a rectangular hollow cross-section. Although not shown, one or more sets of additional crossbeams are provided to form two additional support bases, each support base being vertically offset from the first support base and each subsequent support base.

[0031] Multiple laterally spaced general-purpose longitudinal beams 30 are mounted transversely to (in this embodiment perpendicular to) the crossbeams 28 on top of the support base and extend substantially the entire length of the screen. In a preferred embodiment, the longitudinal beams 30 are spaced apart from each other at their centers by approximately 305 mm.

[0032] Plate fixing members 32, 132, and 232 in the form of rails define a lower shaped portion 68, which is inserted into at least one elongated slot 42 in the upper wall of the longitudinal beam tube 30. Each of the rails 32, 132, and 232 defines an upper portion 78, which defines a retaining member that engages or otherwise supports the removable screen plates 22, 122, and 222.

[0033] The combination of crossbeam 28, longitudinal beam tube 30, clamping rails 32, 132, 232 and sieve plates 22, 122, 222 forms the sieve surface.

[0034] Removable sieve plates 22, 122, 222 are mounted or otherwise supported on rails 32, 132, 232, which are fixed to a plurality of longitudinal beam tubes 30. Each removable sieve plate 22, 122, 222 defines an array of pores (not shown) (typically all of the same size) extending through it. The size of the pores used determines the size of the particles that pass through the sieve plates 22, 122, 222 and the size of the particles that move along the sieve plates 22, 122, 222 without passing through them.

[0035] Longitudinal beam tube 30 in Figure 9-12The image is shown in more detail below. The longitudinal beam tube 30 includes an elongated body defining a longitudinal axis 33 along its length. The elongated body has a top wall 34, an opposing bottom wall 36, and a first side wall 38 and a second side wall 40 extending between the top wall 34 and the bottom wall 36 on opposite sides of the elongated body. The longitudinal beam tube 30 further includes a plurality of longitudinally spaced elongated slots 42 extending along the longitudinal axis 33 in the top wall. The longitudinal beam tube 30 includes a plurality of transverse supports 44 defined by the top wall 34, extending generally transversely to the longitudinal axis 33 between two adjacent elongated slots 42 between the first and second side walls. The plurality of transverse supports 44 provide additional support to prevent the first and second walls from opening and to prevent deformation of the elongated slots 42 during use. In a preferred embodiment, the longitudinal beam tube 30 is composed of an 80 mm × 40 mm rectangular hollow section with a wall thickness of 4 mm, and an elongated slot 42 is laser-cut into the top wall 34. However, other hollow sections using various sizes and methods can also be used.

[0036] The longitudinal beam tube 30 further includes a plurality of longitudinally spaced mounting features 46 located in opposing bottom walls 36 for mounting the longitudinal beam tube 30 to the crossbeam 28. As shown, each mounting feature 46 includes three mounting holes 46, which are longitudinally spaced from each other and aligned with holes 48 in the crossbeam 28. The longitudinal beam tube 30 also includes a gap opening 50 in the top wall 34, which is axially aligned with the mounting holes 46. The perimeter of the gap opening 50 is enlarged relative to the perimeter of the mounting holes 46, thereby allowing the head of the crossbeam fastener 52 and / or washer to pass through the gap opening 50 and engage the area around the mounting holes 46. The crossbeam 28 includes a saddle plate 53 to which a nut 55 is secured and axially aligned with the holes 48, thereby allowing one end of the crossbeam fastener 52 to be received in the nut via a threaded connection to secure the longitudinal beam tube 30 to the crossbeam 28.

[0037] The front portion 54 of the longitudinal beam tube 30 is formed into a discharge nozzle 56 for housing the vibrating screens 10, 100, and 200. Figure 3(Seen more clearly in the image). The front portion 54 includes a cutout extending through the top wall 34 of the longitudinal beam tube 30, such that the front portion 54 is substantially U-shaped to support at least a portion of the discharge nozzle 56 of the vibrating screens 10, 100, 200. The front portion 54 further includes two holes 60 configured to receive fasteners 62 for releasably securing the discharge nozzle 56 to the front portion 54 of the longitudinal beam tube 30. Spacers 58 may be provided corresponding to the holes 60 and to receive the fasteners 62 where the discharge nozzle 56 is located. In the first and second embodiments, an additional spacer may be provided between the front portion 54 and the discharge nozzle 56 to align the discharge nozzle with the screen plate. In use, the front surface 59 of the screen plates 22, 122 abuts against the rear surface 57 of the discharge nozzle to resist axial forces applied to the screen plates 22, 122. In the third example vibrating screen 200, the discharge nozzle 56 is located below the screen plate 222, such that the screen plate 222 at least partially overlaps with the discharge nozzle 56.

[0038] The rear end of the longitudinal beam tube 30 can be fixed to the upright rear wall 61 of the vibrating screens 10, 100, and 200 via a support bracket 62. The rear end may include holes 64 in the first side surface 38 and the second side surface 40, the holes corresponding to holes in the support bracket, to releasably fix the longitudinal beam tube 30 to the upright rear wall 61. It should be understood that other configurations are also possible.

[0039] The elongated slot 42 of the longitudinal beam tube 30 is configured to receive at least one clamping rail 32, 132, 232, which engages or otherwise supports the screen plates 22, 122, 222 during installation. The elongated slot 42 can be configured to engage different variations of the clamping rail, which are configured to support different screen plates, such as woven wire screen plates (e.g., Figure 7 As shown), polyurethane screen plates, such as snap-on screen plates (e.g.) Figure 5 (as shown) and WS85 sieve plate (as shown) Figure 1 (As shown).

[0040] Vibrating screens 10, 100, and 200 further include two discharge nozzle liners 63, which are fixed to the interior of opposing sidewalls 26a and 26b adjacent to the discharge nozzle 56. The discharge nozzle liners 53 help to secure the sides of the adjacent opposing sidewalls 26a and 26b of the discharge nozzle 56 to the front end of the longitudinal beam tube 30 by applying a downward clamping force on the discharge nozzle 56, and prevent wear on the interior of the opposing sidewalls 26a and 26b.

[0041] The vibrating screens 10 and 100 also include two wedge-shaped bars 65 detachably fixed to the interior of the opposing sidewalls 26a and 26b. The wedge-shaped bars 65 are configured to apply a downward clamping force on the opposing sides of the screen plates 20 and 120 adjacent to the opposing sidewalls.

[0042] The vibrating screen 200, including the woven wire mesh screen 220, also includes two pull plates 65', which are fixed to the interior of opposite sidewalls 26a, 26b in the form of substantially C-shaped clamping brackets. During use, the pull plates 65' provide tension to the sides of the woven wire mesh screen 220.

[0043] refer to Figures 13 to 17 The clamping rails include: an elongated base 66; an upper portion 78 defining a retaining member that engages or otherwise supports a plurality of screen plates in use; and a lower portion 68 sized to cooperately fit into one or more elongated slots 42 in the longitudinal beam tube 30 such that the plurality of clamping rails 32 extend substantially the entire length of the top surface 34 of the longitudinal beam tube 30.

[0044] The elongated base 66 of the clamping rail 32 may have a substantially flat lower surface 70, from which a lower portion 68 extends. In use, when the lower portion 68 is received in one or more elongated slots of the elongated slot 42, the flat lower surface 68 abuts against the top wall 34 of the longitudinal beam 30.

[0045] The lower portion 68 includes a tab 72 having two legs 74a, 74b extending from the tab 72 and having a substantially inverted V-shaped cross-section. The lower portion 68 (more specifically, the tab 72) includes two longitudinally extending grooves 76a, 76b on its opposite sides. In use, the top wall 34 of the longitudinal beam tube 30 on the opposite sides of the elongated slot 42 is received in the two grooves 76a, 76b of the clamping rail to secure the clamping rail 32 to the longitudinal beam tube 30.

[0046] In this example, the clamping rail 32 is configured to be received in two or more adjacent elongated slots 42. The lower portion 68 of the clamping rail 32 may include transverse grooves (not shown) corresponding to transverse supports 44 in the top wall 34 of the longitudinal beam tube 30. Alternatively, the clamping rail may be configured to be received in a single longitudinal slot 42. The upper portion 78 of the clamping rail 32 may extend longitudinally beyond the lower portion 68, thereby allowing the ends of adjacent clamps to abut against each other.

[0047] refer to Figure 1 , 4Figures 13-15 show a first example screen assembly 12 for a WS85 plate. The upper portion 78 of the clamping rail 32 includes a retaining member 80 extending along the length of the upper surface 82 of the elongated base 66 and configured to cooperatively engage an opening 84 in the screen plate 22. The retaining member 80 includes a circular upper portion 85 integrally formed with the upper portion of the handle 86. The retaining member 80 further has a substantially vertical straight tab 88 extending laterally from the circular upper portion 85 such that the vertical straight tab 88 is positioned between the sides of two adjacent screen plates 22 during installation.

[0048] A second example screen assembly 112 for snap-fit ​​screen plates. Figure 5 , 6 As shown in Figure 16, the lower portion of the clamping rail is substantially similar to the first example discussed above. In this example, the upper portion 78 includes two retaining members 90a, 90b that extend substantially parallel to each other along the upper surface 82 of the elongated base 66 and are configured to cooperatively engage the opening 92 in the screen plate 122. Each retaining member 90a, 90b includes a handle 94a, 94b extending from the upper surface 82 of the clamping rail 132, and a cylindrical head 96a, 96b located at the upper end of the handle 94a, 94b.

[0049] A third example screen assembly 212 for weaving wire mesh screen 222 in Figure 7 , 8 As shown in Figure 17, the lower portion 68 of the clamping rail 232 is substantially similar to the first example discussed above. In this example, the clamping rail 232 has a convex retaining member 78 extending above the base 66. The height of the clamping rail 232 (more specifically, the thickness of the retaining member 66) can vary, allowing different clamping rails to be secured to adjacent longitudinal beams to provide a convex profile between the sides of the screen. In a preferred embodiment, the height of the clamping rail 232 ranges from 20 mm to 60 mm.

[0050] It will now be understood that the above embodiments have the following advantages: a single longitudinal beam tube can be designed for a variety of different types of vibrating screens, thereby increasing inventory availability without excessive inventory buildup.

[0051] Various modifications can be made to the above embodiments within the scope of this invention.

[0052] For example, a vibrating screen can be a multi-slope screen instead of a horizontal screen.

[0053] The terms “comprising,” “including,” “incorporated,” and “having” are used herein to describe an open list, rather than a closed list, of one or more elements or steps. When such terms are used, the elements or steps listed do not exclude other elements or steps that may be added to the list.

[0054] Unless the context otherwise requires, the terms “a” and “an” are used herein to mean at least one of the elements, integers, steps, features, operations or components mentioned herein, but do not exclude additional elements, integers, steps, features, operations or components.

[0055] In some cases, the presence of extended words and phrases such as “one or more,” “at least,” “but not limited to,” or other similar phrases does not mean and should not be interpreted as meaning that a narrower situation is desired or required without the use of such extended phrases.

[0056] List of reference numerals Vibrating screens 10, 100, 200 Screen assembly 12, 112, 212 Feeding area 14 16", 16'", 16'' Fine particle discharge zone 20 Sieve plates 22, 122, 222 Coarse particle discharge zone 24 Upright sidewalls 26a, 26b 28 crossbeams Longitudinal beam tube 30 Rail 32, 132, 232 Longitudinal axis 33 Top wall 34 Relative bottom wall 36 First side wall 38 Second sidewall 40 Slender slot 42 Horizontal support member 44 Mounting hole 46 Hole 48 in the crossbeam Gap opening 50 Crossbeam fastener 52 saddle plate 53 54 front section of longitudinal beam tube Nut 55 Discharge nozzle 56 57 on the back of the discharge nozzle Spacer 58 59 on the front of the sieve plate Hole 60 in the front part posterior wall 61 Support bracket 62 Discharge nozzle liner 63 Hole 64 in the back end Wedge clip 65 65' pull plate The slender base of the rail 66 Lower part 68 Flat bottom 70 72 stitches Outriggers 74a, 74b Grooves 76a, 76b Upper part 78 Retaining component 80 82 above WS85 Opening 84 The upper part of the component is retained at 85. Handle 86 Vertical straight sheet 88 Two retaining members 90a and 90b 92mm snap-fit ​​screen opening Handle 94a, 94b Cylindrical heads 96a, 96b

Claims

1. A universal longitudinal beam tube for a vibrating screen, said universal longitudinal beam tube comprising: a. An elongated body defining a longitudinal axis along its length, the elongated body having a top wall, an opposing bottom wall, a first side wall and a second side wall extending on opposite sides of the elongated body between the top wall and the opposing bottom wall; b. A plurality of longitudinally spaced elongated slots, the plurality of longitudinally spaced elongated slots extending along the longitudinal axis in the top wall; as well as c. A plurality of transverse supports defined by the top wall, the plurality of transverse supports extending generally transversely to the longitudinal axis between the first sidewall and the second sidewall and between two adjacent elongated slots, thereby providing additional support to prevent the first sidewall and the second sidewall from opening and to prevent the elongated slots from deforming during use.

2. The universal longitudinal beam tube according to claim 1, comprising a plurality of mounting features spaced longitudinally along the opposing bottom walls to fix the longitudinal beam tube to the crossbeam of the vibrating screen.

3. The universal longitudinal beam tube according to claim 2, wherein each of the plurality of mounting features includes one or more mounting holes.

4. The universal longitudinal beam tube according to claim 3, comprising a gap opening located in the top wall, the gap opening being axially aligned with the mounting hole, and wherein the perimeter of the gap opening is increased relative to the perimeter of the mounting hole.

5. A general-purpose longitudinal beam tube according to any one of the preceding claims, comprising a cut that extends through the top wall at a front portion of the longitudinal beam tube such that the front portion is substantially U-shaped to support at least a portion of the discharge nozzle of the vibrating screen.

6. The universal longitudinal beam tube of claim 5, comprising one or more apertures extending through the bottom wall at the front portion to operably receive fasteners, thereby releasably securing the discharge nozzle to the longitudinal beam tube.

7. A screen assembly for mounting a screen plate on a vibrating screen, the screen assembly comprising: a. A universal longitudinal beam tube according to any one of claims 1 to 6, wherein the universal longitudinal beam tube is capable of being fixed to the crossbeam of a vibrating screen; and b. At least one clamping rail, said at least one clamping rail comprising: i. Slender base; ii. The lower portion is sized to cooperate with one or more of the elongated slots in the longitudinal beam tube, such that the at least one clamping rail extends substantially the entire length of the top wall of the longitudinal beam tube; as well as iii. The upper portion defines a retaining member that engages or otherwise supports a plurality of sieve plates in use.

8. The assembly of claim 7, wherein the base of the clamping rail has a substantially flat underside, and the lower portion extends from the underside such that when the lower portion is received in the one or more elongated slots, the flat underside abuts against the top wall of the longitudinal beam tube to resist vertical loads applied to the clamping rail.

9. The assembly according to claim 7 or 8, wherein the lower portion extends substantially the entire length of the base.

10. The assembly of claim 9, wherein the lower portion includes two grooves that extend longitudinally along substantially the entire length of the lower portion on opposite sides, such that the top wall of the longitudinal beam tube on the opposite side of the elongated slot is received in the grooves to secure the clamping rail to the longitudinal beam tube.

11. The assembly according to any one of claims 7 to 10, wherein the lower portion includes a transverse groove corresponding to the transverse support in the top wall of the universal longitudinal beam tube, to allow the lower portion of the clamping rail to be received in two or more adjacent elongated slots.

12. The assembly according to any one of claims 7 to 10, wherein the upper portion of the clamping rail extends longitudinally beyond the lower portion of the clamping rail.

13. The assembly according to any one of claims 7 to 12, wherein the upper portion is substantially convex, the convexity serving to support the woven wire screen plate in use.

14. The assembly according to any one of claims 7 to 12, wherein the upper portion includes a pair of retaining members that extend substantially parallel to each other from above the base and engage openings in one or more sieve plates in use.

15. The assembly of claim 14, wherein each retaining member includes a support extending from the upper surface of the base and a cylindrical head located at the upper end of the support.

16. The assembly according to any one of claims 7 to 12, wherein the retaining member extends along the entire length of the upper surface of the base and is configured to cooperatively engage openings in one or more sieve plates.

17. The assembly of claim 16, wherein the retaining member comprises a support extending from the upper surface of the base, a convex member integrally formed with the support, and a substantially vertical straight piece extending from the convex member.

18. A vibrating screen comprising: a. A chassis having opposing sidewalls and a plurality of longitudinally spaced crossbeams extending between the opposing sidewalls, wherein the upper surface of the crossbeams forms a support base; b. A plurality of laterally spaced screen assemblies according to any one of claims 7 to 17, each screen assembly comprising a universal longitudinal beam tube fixed to the support base and one or more clamps fixed to the universal longitudinal beam tube, wherein the screen assembly is mounted transversely to the crossbeam; as well as c. A plurality of sieve plates, said plurality of sieve plates being fixed to or otherwise supported by said upper portion of one or more clamping rails of said plurality of sieve surface assemblies.

19. The vibrating screen of claim 18, comprising a plurality of discharge nozzles mounted on a front portion of the longitudinal beam tube, wherein a spacer is positioned between the front portion and the discharge nozzles such that the back of the discharge nozzles abuts against the front of the screen plate and the clamping rail to resist axial loads applied to the screen plate and the clamping rail.

20. The vibrating screen according to claim 18, comprising a plurality of discharge nozzles mounted on the front portion of the longitudinal beam tube such that the top surface of the discharge nozzles is located below the screen plate, thereby causing a portion of the screen plate to overlap with the discharge nozzles.

Images