CN201040661Y - Chute joints, upper coal baffles and their fixing devices for chain scraper conveyors - Google Patents

Abstract

The utility model relates to a chute section for a chain-type scraper conveyor, which comprises side boundaries arranged on both sides of a conveying trough, wherein at least one side boundary is constituted as an additional part for an upper coal retaining plate and has A side plate (8), which is provided with a gap for fixing the upper coal retaining plate by means of a detachable fixing device, wherein the gap (14) for the fixing device includes two windows connected by a slit ( 15), a fastening device comprising two clamping jaws that can be clamped by means of a screw connection can be inserted in the window. The utility model also relates to an upper coal retaining plate for fixing on the attachment of the chute section by means of a fixing device, comprising a top side (22) and a fixed side (21) provided with a space for the fixing device ), which are connected to each other via an intermediate side (23). Finally, the invention also relates to a fastening device for fastening the upper coal retaining plate to the side plate of the chute section provided with recesses.

Description

Chute joints, upper coal baffles and their fixing devices for chain scraper conveyors

technical field

The invention relates to a chute section for a chain-type scraper conveyor, comprising side borders arranged on both sides of a conveyor chute, wherein at least one side border is formed as an attachment for an upper coal baffle and has one side The side plate is provided with recesses for fastening the upper coal baffle by means of detachable fastening devices. The invention also relates to an upper coal baffle for fastening by means of fastening devices to an attachment for a chute section of a chain scraper conveyor, the attachment having a side plate with a plurality of recesses, wherein The upper coal baffle is U-shaped and has a top side oriented parallel to one another and a fastening side provided with recesses for fastening devices, which are connected to each other via a middle side. Finally, the invention also relates to a fastening device for fastening an upper coal baffle provided with a recess in the fastening side to a recessed side plate of a chute section of a chain scraper conveyor.

Background technique

In chain scraper conveyors used in mine production, the individual chute segments that make up the conveying chute are defined by side profiles on which additional parts are screwed, cast or welded. In a face conveyor, usually at least on the filling side coal baffles or upper coal baffles are fastened to the chute sections, which stand above the side profiles forming the lateral boundaries and thus raise the filling traverse of the chute on the filling side. Cross-section, so that the conveyed material obtained by the mining machine does not flow out of the conveying trough on the filling side during the process of conveying through the conveying trough. In the case of the entry conveyor, side plates with connection possibilities for the upper coal baffle can also be provided on both sides in order to prevent the conveyed material from flowing away on both sides. Numerous constructions are known for the upper coal baffle, which also include angled or U-shaped upper coal baffles, which are fixed by screw connections to the side profiles or add-ons of the chute section (eg DE 3925672A1).

Known by DE 202004004652U1 is a similar chute section comprising a similar upper coal retaining plate. Each side plate is distributed along the length of the chute section and is provided with, for example, a closed space around the ring, and each space is passed through by a screw rod of a fixing bolt under the assembled state of the upper coal retaining plate. At the same time, the fastening bolts pass through the aligned or fitted recesses in the lower fastening side of the U-shaped upper coal baffle. Assembly of the upper coal baffle is time consuming because the bolt heads are inside the upper coal baffle and the retaining nuts must be tightened from below the side plates. Furthermore, it is disadvantageous that a large number of screws have to be tightened and the heads of the individual screws can cause damage to cables which run through an upper coal baffle which also forms a cable channel.

Contents of the invention

The object of the present invention is to provide a chute joint and an upper coal baffle and its fastening device which do not have the above-mentioned disadvantages and which in particular can be mounted or removed quickly and reliably by means of the fastening device.

This object is achieved according to the invention for the chute section and the upper coal baffle in that the recess for the fastening device comprises two joints connected via a slot in the side plate of the chute section or in the fastening side of the upper coal baffle. Windows, into which fastening devices can be inserted, these fastening devices comprise two clamping jaws which can be clamped by means of a screw connection. Therefore, in the solution of the present invention, such fastening bolts are no longer tightened, that is, said fastening bolts pass through the gap with their shank perpendicular to the surface of the side plate or the surface of the fastening side and are clamped between the nut head and the bolt head. Tighten the surface of the two plates; but parallel to the plane of the side plate or fixed side to tighten the bolted connection of the present invention and clamp the two plates relative to each other by means of the clamping claws. The studs connected by the slotted bolts connecting the windows can pass through the slots so that during installation the clamping jaws can be inserted into the windows before the screwed connections are tightened and then clamped by tightening the fixing bolts against the side The plane of the plate or the plane of the fixed side is in the center.

In a possible embodiment of the chute section according to the invention, the side borders are provided with additional parts, the side plates of which each have recesses, each recess comprising two windows and connecting slots. Such a chute section can be used in particular as a face conveyor. According to another preferred embodiment, a side boundary includes a planer guide (Hobelführung), so that the chute section forms a planer chute section (Hobelrinnenschu β) as a whole, in this embodiment then only the additional part on the filling side is provided A side plate to which the upper coal retaining plate can be fastened and which is provided for this purpose with a recess formed by a window and a connection slot.

According to an advantageous embodiment, an upper coal baffle can be attached to the chute section, the upper coal baffle is U-shaped and has a top side aligned parallel to one another and a fastening side provided with recesses for the fastening device , they are connected via a middle side, wherein the space for the fixing means formed in the fixing side comprises two windows connected via a connecting slit into which the fixing means can be embedded, each fixing means comprising two The clampable clamping jaws are connected by means of a screw.

According to another embodiment, the upper coal retaining plate can also be formed by an L-shaped gusset, the long side of which forms a fixed side and is provided with recesses, each recess includes two windows and a connecting slot and is in the recess. Fastening devices can be inserted, each of which comprises two clamping jaws which can be clamped by means of a screw connection. L-shaped gussets are advantageous especially with small seam thicknesses. It is particularly advantageous if a flexible pad, in particular a rubber pad, is fastened or detachably fastened to the short sides of the L-shaped gusset. In the production and use of such chute joints when the seam thickness is small, the top beam of the support that makes the working face open is supported on the rubber pad in extreme cases and even temporarily deforms the rubber pad. Collisions caused damage to the top beam.

According to a further advantageous embodiment, the side plate has centering recesses into which centering pins on the upper coal retaining plate can be inserted. The hollow recess and the centering pin can then be used during assembly to ensure that the window and the connection in the side plate and in the fastening side of the upper coal retaining plate are secured before the fastening device is inserted into the window and then clamped by tightening the screw connection Slits overlap in alignment.

In the case of a U-shaped upper coal baffle, it is particularly advantageous if the top sides are also provided with recesses, each recess comprising two windows connected via a slot. In this case, if the same chute section is to be used for large seam thicknesses, the upper coal retaining plate can be mounted overlapping with the same fixing device. According to another advantageous embodiment, in the U-shaped upper coal retaining plate of the present invention, some supporting plates oriented parallel to the middle side can be welded on the top side, and some detachable parts can be fixed in the supporting plates to define a Stopper for cable channel. The corresponding stop can advantageously be provided at its front end with a pin projection or the like, which can engage in a corresponding interlocking recess in the side plate or in the top side of the upper coal retaining plate. It is then only necessary to tighten a fixing bolt or the like between the other end of the stopper and the support plate in order to securely mount the stopper as a cable passage boundary.

It is particularly advantageous not only in the chute section according to the invention but also in the upper coal baffle according to the invention that the windows and the connection slots form an essentially I-shaped recess. It is also preferred that one of the windows of each void is open at the edges. The open-sided window then coincides with the outer end edge of the side plate or the fastening side and/or the top side, so that the screw connection for the fastening device is freely accessible from the outside or filling side of the chute section. In the case of a well-accessible screw connection, almost any tool, including electric tools, can then be used for tightening the screw connection of the fastening device.

Furthermore, it is preferred that the boundary edges of the windows into which the connecting slots respectively open are provided with a wedge-shaped chamfer at least on one side, preferably only on one side. In this case the chamfer is advantageously located on the bottom side for the side plate or top side and on the top side for the fixed side, so that the clamping jaws with their clamping legs move relative to each other along the wedge-shaped chamfer and perpendicular to the plate Flat or side flats increase the clamping pressure as the bolted connection is tightened. It is particularly advantageous if the clamping faces of the clamping jaws also have wedge-shaped chamfers.

The above-mentioned object is also achieved with a fastening device for the chute section and/or the upper coal retaining plate according to the invention, which has two clamping jaws which can be clamped by means of a screw connection and can be inserted into the side plate and In the voids in the fixed sides of the upper coal baffle, each void includes two windows connected by a connecting slit. According to a preferred embodiment, the two clamping jaws of the fastening device are provided with wedge-shaped chamfers on mutually facing clamping surfaces. Furthermore, preferably one of the clamping jaws has a screw head recess for receiving the screw head of a clamping bolt in a torsion-proof manner, while the other clamping jaw is provided with a recess for sunkenly receiving a clamping nut or the like, which Can be screwed on the threaded rod of a clamping bolt. The outer wall of at least one clamping jaw can preferably be designed as an arch or a radius in order to reliably prevent possible damage to cables laid in the upper coal retaining plate due to vibrations on the outer wall of the clamping jaw.

Description of drawings

Further advantages and constructions of the invention emerge from the following description of the preferred construction of the chute section and the upper coal retaining plate as well as the preferred construction of the fastening device according to the invention, which are schematically shown in the drawings. in:

Figure 1 is a perspective view of the planer chute section of the present invention including the upper coal retaining plate installed on the filling side;

Figure 2 is a perspective view of the upper coal baffle and fixing device, partly an exploded view;

The upper coal retaining plate of the present invention of Fig. 3 comprises the horizontal sectional view of the side plate of the chute joint of the present invention shown schematically;

Figure 4 The chute section of the present invention includes a second embodiment of an L-shaped upper coal baffle.

Detailed ways

In FIG. 1 , the general designation 10 indicates an inventive chute section as an embodiment of a planer chute section, which has a return chute 1 and a delivery chute 2 arranged one above the other, which are delimited laterally by individually welded side profiles 3 . , so that a not shown scraper chain with chain scrapers is guided laterally. A chain scraper conveyor is formed by means of a plurality of identically constructed and arranged successively arranged chute links 10 , in which coal obtained with a mining plow is then discharged as ore in the conveying branch line 2 . A plow guide 4 erected above the upper side profile 3 is welded as an additional part on the rear side boundary of the chute section 10 in FIG. 1 , which forms the mining face side in mining production. In FIG. 1, the front side profile 3 is welded on the outside during production use on the filling side with an angled side plate 5 as an additional part on the filling side, on which numerous other functional parts, such as locking handles, are fastened, especially welded. Groove 6 or cantilever connection 7. The gusset 5 comprises a vertically standing side and a side bent towards the filling side, which forms a side panel 8 for the elements of the additional parts arranged below it, on which side panels are fixed by means of Apparatus 40 removably secures an upper coal baffle generally indicated at 20 . The angled side panels 8 are reinforced against the vertically standing sides of the corner panels 5 by means of welded, vertically oriented support plates 9 in order to be able to bear the combined weight of the upper coal retaining panels 20 .

The upper coal baffle 20 and fixing device 40 of the present invention are also shown in detail in FIGS. 2 and 3 . The upper coal retaining plate 20 is substantially U-shaped and has a lower fixed side 21, a top side 22 oriented parallel thereto and a middle side 23 connecting them, wherein in the illustrated embodiment the top side The side 22 and the middle side 23 are formed in one piece from an angled sheet metal, which is welded to the bottom side 21 . In the shown embodiment, the side plate 8 on the chute section 10, the fixed side edge 21 and the top edge 21 of the upper coal retaining plate 20 have four voids 14, 24 or 34 respectively, each of which includes two windows 15, 25 or 35, they are connected to each other via a connecting slit 16, 26 or 36. The windows 25 of the respective filling side are open at the edges, ie open towards the end edge 17 , 27 or 37 of the side panel 8 , the fastening side 21 or the top side 22 . Each fixing device can be embedded in each gap 14, 24 or 34 respectively, and each fixing device includes two clamping claws 41, 42, and the clamping claws can be clamped to make the two clamping claws 41, 42 by a clamping bolt 43. The distance between 42 can be reduced relative to each other by tightening a clamping nut 44 . In the assembled state, the shaft of the clamping screw 43 extends along the slot 16 , 26 or 36 .

As can be seen particularly clearly in FIG. 3 , the two clamping jaws 41 , 42 have a substantially C-shaped cross section and the outer walls 45 , 46 of the two clamping jaws 41 , 42 are arcuate. On the clamping jaw legs extending along the width of the clamping jaws 41, 42 facing each other, the inner faces 47 and 48 are each provided with a wedge-shaped chamfer, so that the clamping force exerted on the inner faces 47, 48 presses against each other. The side plate 8 and the fixed side 21 to be clamped. In order to increase the clamping action of the wedge-shaped inner faces 47, 48, the boundary edges 18, 28 or 38 of the windows 15, 25 or 35 into which the slots 16, 26 and 36 respectively open are also provided with a wedge-shaped chamfer on one side. The oppositely oriented wedge surfaces on the inner faces of the clamping jaws 41 , 42 and on the limiting edge cooperate during clamping. The wedge surfaces 38 ′ for the upper top side 22 of the upper coal baffle 20 can be seen particularly clearly in FIG. 3 . The clamping jaw 42 is provided on its rear with a screw head recess 49 which accommodates the screw head of a fastening screw 43 in a form-locking manner in a rotationally secure manner. The clamping jaw 41 is provided at its rear with a recess 49 ′ for sinking the clamping nut 44 . The width of the opening of the groove 49 ′ should be sufficient to accommodate a tool for tightening or loosening the clamping nut 44 on the fastening device 40 . The clamping nut 44 is exposed at the end edge of the side plate 8 or the fastening side 21 .

A cable channel 33 can be formed by means of the upper coal retaining plate 20 which is arranged directly on the side plate 8 of the chute section 10 and assembled there. For this purpose, on the top side 22, each supporting plate 39 which is oriented parallel to the middle side 23 and extends downwards is welded, on which the two end edges 37 of the side plate 22 or the fixed side 21 are detachably fixed. A stopper 50 extending between and 27. The support plate 39 here has a square recess 51 which forms a twist-proof measure for the fastening screw 52 of the stop 50 . The stopper 50 has a centering pin 53 on the lower end, which cooperates with a corresponding notch in the side plate 8 . Furthermore, the fastening side 21 is provided with centering pins 29 on the side edges, which engage in corresponding centering recesses 19 in the side plate 8 in order to center the upper coal retaining plate 20 during assembly. The top side 22 is also provided with corresponding centering notches 31, so that when the plurality of upper coal retaining plates 20 are assembled, the windows 25, 35 and the slots 26, 36 of the gaps 24, 34 are centered relative to each other and overlapped respectively. And the fastening device 40 can be inserted without difficulty. A sealing plate 60 is screwed onto the middle side 23 of the upper coal retaining plate 20 as a boundary for the cable channel 33 , as shown in FIG. 3 . A further seal 61 can also be fastened with the same fastening device on the outer surface of the middle side 23 facing the delivery trough.

FIG. 4 shows the same chute section 10 as in the exemplary embodiment according to FIG. 1 , but with a modified upper coal baffle 120 . The side panels 8 on the fill-side gusset 5 of the chute section 10 are formed in the same way as in the first exemplary embodiment. Here, however, the upper coal baffle 120 is formed by an L-shaped gusset 122 with a longer fixed side 121 and a short upwardly extending side 123 bent at right angles thereto. The fixed side 121, as in the first embodiment, is also provided with a plurality of recesses 124, which, as in the above-described embodiment, comprise two windows connected to each other via a connecting slit, in which windows are embedded as in the first embodiment. The same fixing means for clamping the side panel 8 and fixing the side 121 . Different from the above-mentioned embodiment, on the erected short side 123 of the upper coal retaining plate 120, a vertically erected rubber pad 161 is fixed by means of a plurality of fixing bolts 160 bolts. It can be supported on the rubber pad when sinking. Fixed rubber sealing blocks 162 are fixed on both side edges of the rubber pad 161, and they are used as butt joint seals of the coal retaining plate.

Numerous modifications can be derived from the above description for the skilled person, and they should be included in the protection scope of each claim. Instead of an I-shaped recess, the recess can also have a slightly different shape, if the stationary jaw is likewise provided with a different shape. Instead of four, more or less clearances can also be provided per side panel or fixed side or top side. It is also possible to install multiple upper coal baffles overlappingly. The upper coal baffle may also be constructed from a single piece of double bent sheet material.

Claims (18)

1. Chute section for a chain-type scraper conveyor, comprising side borders arranged on both sides of a conveyor chute (2), wherein at least one side border is formed as an add-on for an upper coal baffle and has one side Plate (8), the side plate is provided with a gap for fixing the upper coal retaining plate by means of a detachable fixing device, and it is characterized in that: the gap (14) for the fixing device includes two through a slit (16) Connecting window (15) into which a fastening device comprising two clamping jaws clampable by means of a screw connection can be inserted. 2. The chute section according to claim 1, characterized in that additional pieces are provided on the borders of both sides, and the side plates of each additional piece have gaps including windows and slits. 3. The chute section as claimed in claim 1, characterized in that one side boundary includes planer guides (4). 4. The chute section according to one of claims 1 to 3, characterized in that the upper coal baffle (20) is U-shaped and has a top side (22) oriented parallel to each other and a device for The fixing side (21), the top side and the fixing side of the cavity of the fixing device are connected to each other via a middle side (23), wherein the cavity (24) for the fixing device comprises two connecting slits (26) ) connected window (25), in which a fastening device (40) comprising two clamping jaws (41, 42) that can be clamped by means of a screw connection can be embedded. 5. According to the chute joint described in any one of claims 1 to 3, it is characterized in that: the upper coal retaining plate (120) is formed by an L-shaped corner plate (122), and the long side plate (121 of the corner plate) ) form a fastening side and are provided with recesses (124), each of which includes two windows and a connecting slot and in which a fastening device (40) including each clampable clamping jaw can be inserted. 6. The chute section according to claim 5, characterized in that a flexible pad, in particular a rubber pad (161), is detachably attached to the short side (123) of the upper coal retaining plate (120). 7. The chute section according to claim 1, characterized in that the side plates (8) have centering notches (19), in which the centering on the upper coal retaining plate (20) can be inserted. pin (29). 8. Upper coal baffle for fixing by means of fastening devices on an add-on to the chute section of the chain scraper conveyor, which has a side plate with a gap, wherein the upper coal baffle (20) forms the U Shaped and have a top side (22) oriented parallel to each other and a fixed side (21) provided with a gap for the fixing device, the top side and the fixed side are connected to each other via a middle side (23), It is characterized in that the space (24) for the fastening device comprises two windows (25) connected via a slit (26), in which two clamping jaws comprising two clampable clamps by means of a screw connection can be embedded fixtures. 9. Upper coal retaining plate according to claim 8, characterized in that the top side (22) is also provided with a recess (34) comprising two windows (35) connected via a slot (36). 10. The upper coal retaining plate according to claim 8 or 9, characterized in that: on the top side (22), support plates (39) oriented parallel to the middle side (23) are welded, on each support plate Removable stoppers (50) for defining a cable passage (33) can be fixed. 11. According to claim 1 or 8 described chute section or upper coal retaining plate, it is characterized in that: windows (15, 25, 35) and slits (16, 26, 36) form I-shaped gaps (14, 24, 34). 12. The chute section or upper coal retaining plate according to claim 1 or 8, characterized in that one of the windows (15, 25, 35) of each gap (14, 24, 34) is open at the edge. 13. According to claim 1 or 8, the chute joint or the upper coal retaining plate is characterized in that: the boundary edges (18, 28) of the windows (15, 25, 35) that the slits (16, 26, 36) lead into , 38) Provide a wedge-shaped chamfer (38') at least on one side. 14. Fixing device for fixing the upper coal baffle with a gap in the fixed side to the side plate with a gap in the chute section of the chain scraper conveyor, characterized in that the fixing device (40) There are two clamping jaws (41, 42) that can be clamped by means of a screw connection (43, 44), each clamping jaw can engage in the recess (14, 4) in the side plate (8) and the fixed side (21). 24, 34), said void comprises two windows (15, 25, 35) connected via a connecting slit (16, 26, 36). 15. Fastening device according to claim 14, characterized in that the two clamping jaws (41, 42) of the fastening device are provided with wedge-shaped chamfers (47, 48) on the clamping surfaces facing each other. 16. Fastening device according to claim 14, characterized in that one of the clamping jaws (42) has a screw head recess for accommodating a screw head in a twist-proof manner, while the other clamping jaw has a Recess (49') to submergedly accommodate a clamping nut (44). 17. Fastening device according to claim 14, characterized in that the outer wall (45, 46) of at least one clamping jaw (41, 42) is arched or rounded. 18. The chute section or upper coal retaining plate according to claim 1 or 8, characterized in that the fastening device is formed according to one of claims 14 to 17.

Images