JP5365600B2 - Cross section box type truss frame for conveyor support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box-shaped sectional truss frame for supporting a carrying conveyor. <P>SOLUTION: The box-shaped sectional truss frame for supporting a conveyor includes a plurality of upper chord members and a plurality of lower chord members juxtaposed at intervals. A first square steel pipe disposed so that one diagonal corner 8 in a square-sectional steel is located at the top is arranged in a predetermined position as an upper chord member 4 or lower chord member 5 of each corner of the truss frame, and a second square steel pipe disposed so that one diagonal corner portion 8 in a square-sectional steel pipe is located at the top or an angle bar disposed so that a corner portion 8 is located at the top is arranged in a predetermined position as a horizontal joint beam 2 or horizontal diagonal member 7 in the truss frame 1. An end of the joint beam 2 or horizontal diagonal member 7 is joined through a gusset plate 3 fixed to the end by welding and vertically disposed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a cross-section box-type truss structure for supporting a conveyor for supporting a conveyor that conveys loose objects such as coal and coke.

2. Description of the Related Art Conventionally, as a cross-section box-type truss structure for supporting a conveyor of loose articles such as coal and coke, for example, there is a large cross-section box-type truss structure 20 as shown in FIGS.
The truss frame 20 having a box-shaped structure has upper and lower chord members 23 or lower chords arranged in parallel so that the flanges 22 of the H-section steel material 21 are arranged as upper flanges and lower flanges, respectively, and extend horizontally. It is used as the material 24.
Further, the upper chord member 23 and the lower chord member 24 on one side are connected to each other by being fixed to the bundle member 27 or the diagonal member 28 by welding or the like through the longitudinally oriented gusset plate 25 provided thereon, Side truss beams 29 are formed. In the bundle member 27 or the diagonal member 28, the grooved steel 26 is arranged vertically so that the grooved steel web is positioned in a vertical plane.

Further, the connecting beam 30 in which the upper chord members 23 or the lower chord members 24 between the side truss beams 29 adjacent in parallel with each other in the horizontal direction are arranged vertically with the flanges of the grooved steel 26 arranged vertically. A large number of them are arranged in parallel and connected in the longitudinal direction of the material. Further, a laterally extending gusset plate 31 protruding in the horizontal direction is provided at an intermediate portion of each connecting beam 30. In addition, a large number of laterally extending gusset plates 31 projecting laterally on the upper chord member 23 or the lower chord member 24 are provided at intervals in the longitudinal direction of the chord member, and the laterally extending gusset plate 31 on the chord member side and the connecting beam 30 side. The laterally extending gusset plate 31 is connected by a diagonal member 32 in the lateral direction. The diagonal member 32 in the lateral direction is formed of angle steels arranged side by side (horizontally arranged in the illustrated case) so that the upper surface is a flat surface, and extended in the lateral direction. (Or the lower chord member 24), the connecting beam 30, and the diagonal member 32 in the lateral direction are connected to form a truss structure.
Further, in the truss frame 20 having such a box-type structure, since the internal space can be formed large, as shown in FIG. 20, the leg portion 35 is supported so that the frame 34 in the transfer conveyor 33 is supported by the connecting beam 30. It becomes a form which installs and arranges the conveyor 33 for conveyance in the inner space of the truss frame 20 of a cross-section box type.

  In these forms, when the upper chord members 23 or the lower chord members 24 are arranged and connected in series, an attachment plate or an end flange is provided to connect the chord members to each other, a connecting beam or a chord. The material and the diagonal material are connected using bolts or the like.

When a cross-section box-type truss frame 20 is provided with a conveyor for conveying loose objects including powder, dust is likely to accumulate on the upper flange 22 of the upper chord member 23 or the lower chord member 24. In addition, dust easily accumulates on the lower flange 22 below, and particularly when the dust on the lower flange 22 is cleaned from the upper surface or by water jetting from the lower surface side of the lower flange 22, ) Is difficult to clean.
The upper surface of the upper flange 22 or the upper surface of the lower flange 22 has the same problem as described above.
The gusset plate for connecting the upper chord member 23 or the lower chord member 24 and the connecting beam 30 is a laterally extending gusset plate 31 protruding in the horizontal direction.
In such a truss frame structure, the upper chord member 23 or the lower chord member 24 or the upper and lower flanges of the upper and lower connecting beams 30, the laterally extending gusset plate 31, and the upper flange 22 of the lateral oblique member 32 are Since it has a flat upper surface, it has a structure in which dust and the like are likely to accumulate and rainwater is likely to stay, which is disadvantageous in terms of corrosion.

  Further, as shown in FIGS. 21 to 23, a steel pipe is used as the upper chord member 23 or the lower chord member 24, and the bundle member 27 or the diagonal member 28 forming the side truss beam 29 is similarly small in diameter. Steel pipe material is used for connection through a vertically arranged gusset plate 25, and the side truss beams 29 are connected to each other via a laterally extending gusset plate 31 provided so as to protrude laterally. There is also a truss frame 20 having a box structure that is connected by an inclined connecting beam 30 made of a material.

  Further, in such a truss frame 20 having a box-type structure, as shown in FIG. 23, legs 35 are installed so that the upper chord member 23 supports the frame 34 of the conveyor 33, and a cross-section box-type truss frame is provided. It becomes the form which arrange | positions the conveyance conveyor 33 in 20 upper part.

  In the truss frame 20 having such a box structure, a circular steel pipe is used as the upper chord member 23, the lower chord member 24, or the inclined connecting beam 30 inclined in the lateral direction. Therefore, the horizontal central axis is set to the central axis of the circular steel pipe. As a reference, the chord material side surface is a steeply inclined side surface up to 45 ° clockwise or counterclockwise, but the upper end surface of the chord material exceeding 45 ° and 90 ° is a gentle arcuate gently inclined surface 36 that is nearly flat. Therefore, it is expected to be more effective than the flat plate in terms of reducing dust accumulation or rainwater retention. However, it is easy for dust to accumulate on the loose arcuately inclined surface 36 near the flat top of the chord material, and rainwater stays there. It is a structure that is easily damaged, and is a disadvantageous structure in terms of corrosion.

  Further, since the upper chord member 23 or the lower chord member 24 and the laterally inclined connecting beam 30 are connected via the gusset plate 31 projecting in the lateral direction, the upper chord member 23 or the lower chord member 24 on the gusset plate 31 projecting in the lateral direction. On the flat upper surface, dust and the like are easily deposited and rain water is likely to stay. This is also a disadvantageous structure in terms of corrosion.

  Even in these forms, when the upper chord members 23 are arranged and connected in series, an attachment plate or an end flange 37 is provided to connect the end portions of the upper chord member 23 or the connecting beam 30 or The string member 23 (24) and the diagonal member 32 are connected using bolts or the like.

JP 09-86640 A JP 2002-275663 A

As described above, in the conventional case, as the upper chord member 23 or the lower chord member 24, the flanges 22 of H-shaped steel or I-shaped steel are respectively disposed on the upper and lower sides, respectively, or the upper truss frame or the lower truss frame. H-shaped steel is used in the oblique material in the same orientation as described above, or the flange or web of the channel steel, or one side of the angle steel is arranged so as to extend in the lateral direction as described above. In addition, the flat portions or recesses on the upper side of these members have a problem that dust is accumulated or rainwater is liable to accumulate when a powder-mixed loose article is conveyed.
In addition, when dust accumulates, rainwater or the like permeates, and an acidic or alkaline wet state is simply maintained, which may cause corrosion of the structural body or damage and acceleration of the coating film on the structural body.
In addition, as described above, in a structure in which a circular steel pipe is used as a chord member, a bundle member, or an oblique member and joined through a horizontally arranged gusset plate, the cross section is circular, so that the upper surface of the member becomes a curved surface rather than a flat plate, Although the effect can be expected in terms of dust accumulation or rainwater retention, the vicinity of the top of the circular cross section is flat and deposition occurs. In these structures as well, the gusset plate at the member joint is horizontal and does not prevent deposition at the joint.
In addition, there is an idea that angle steel is arranged in a part of the roller support structure of the conveyor in the direction of a mountain umbrella, but there is no consideration for other parts and joints, and it is effective for reducing dust accumulation on the entire conveyor frame. Absent.
In the case of H-shaped steel or I-shaped steel, when the upper and lower flange upper surfaces are arranged horizontally or horizontally, the upper flange upper surface or the lower flange lower surface is easy to clean. In the inner string material in parallel, the lower flange upper surface) is not the front surface but the back surface, and the lower string material hidden from the upper chord material when viewed from the upper surface is a double back surface. This is a part that is not easy, and the accumulated dust or rain water cannot be easily removed.

  The present invention advantageously solves the above-mentioned problems, makes the upper surface of the chord member and the lateral connecting member or the oblique member of the lateral direction a steeply inclined upper surface, and arranges the gusset plate vertically, thereby Eliminates the area of the flat part on the upper surface side of the member compared to the arrangement, and it is easy to wash off dust even when cleaning with less dust accumulation and rainwater retention, and it is possible to reduce corrosion due to these And it aims at providing the cross-section box type truss frame for conveyance conveyor support which has the effect which improves cleaning cleaning property remarkably, and can extend the lifetime of a truss structure in addition.

In order to advantageously solve the above-mentioned problem, in the cross-section box-type truss frame for supporting a conveyor according to the first aspect of the present invention, a conveyor supporting trough having a plurality of upper chord members and a plurality of lower chord members that are parallel to each other at intervals is provided. In the cross-section box-type truss frame, a first square steel pipe arranged so that one corner in the diagonal direction of the cross-section square steel pipe is positioned at the top is used as an upper chord material or a lower chord material at each corner of the truss frame. A second square steel pipe or an angle steel arranged so that one corner in the diagonal direction of the square steel pipe in the cross section is located at the top, Arranged at a predetermined position as a horizontal connecting beam or horizontal diagonal in the frame, and the end of the connecting beam or horizontal diagonal is fixed to the end by welding and is vertically oriented Wherein the via arranged gusset plates are joined.
In the second invention, in the cross-section box-type truss frame for supporting the conveyor of the first invention, a slit extending in the axial direction of the member is provided at the end of the lateral connecting beam and the lateral diagonal member, A gusset plate is arranged vertically in the slit, and the gusset plate is fixed by welding on the upper surface side of a lateral connecting material or a lateral oblique material.
According to a third aspect of the invention, in the cross-section box type truss frame for supporting a conveyor according to the first aspect of the invention, the end portion of the connecting beam or the diagonal member in the lateral direction is fixed to the end portion by welding and arranged vertically. It is characterized by being bolted via a gusset plate.
According to a fourth aspect of the invention, in the cross-section box type truss frame for supporting a conveyor according to the first aspect of the invention, the end portion of the connecting beam or the diagonal member in the lateral direction is fixed to the end portion by welding and is arranged vertically. It is characterized by being welded and joined via a gusset plate.
In the fifth invention, in the cross-section box type truss frame for supporting a conveyor according to any one of the first to fourth inventions, the upper surfaces of the lateral connecting beams and the lateral diagonal members are steeply inclined upper surfaces. It is characterized by that.
According to a sixth aspect of the invention, in the cross-section box-type truss frame for supporting a conveyor according to any one of the first to fourth aspects, the upper surface of the member of the cross-section box-type truss frame for supporting the conveyor is at least 45 degrees with respect to the horizontal plane. It is characterized by being inclined.
In the seventh invention, in the cross-section box-type truss frame for supporting a conveyor according to any one of the first to sixth inventions, a reinforcing steel plate is fixed to a joint portion of a cross-section square steel pipe to which the gusset plate is joined by welding. Thus, the tube wall of the square steel pipe is reinforced.

According to the first invention, in a cross-section box-type truss frame for supporting a conveyor having a plurality of upper chord members and a plurality of lower chord members that are parallel to each other at an interval, one corner portion in a diagonal direction in the cross-section square steel pipe is a top portion. The first square steel pipe arranged so as to be located at a predetermined position as the upper chord material or the lower chord material of each corner of the truss frame, and one diagonal corner of the cross-section square steel pipe is located at the top The second square steel pipe or the angle steel arranged so that the corner portion is located at the top is arranged at a predetermined position as a lateral connecting beam or a lateral diagonal member in the truss frame, The end of the connecting beam or the diagonal member in the horizontal direction is fixed to the end by welding and joined via a gusset plate arranged in the vertical direction. Alternatively, the upper surface of the diagonal material in the horizontal direction can be made steeply inclined, and the gusset plate is arranged vertically or vertically, so compared to the conventional case where the upper surface of the gusset plate is horizontally arranged The horizontal area can be reduced, and the accumulation of dust, etc., deposited on the steeply inclined upper surface of the chord member, the horizontal connecting beam, or the diagonal member of the horizontal direction can be reduced. In addition, the retention of rainwater due to rainwater or water washing can be suppressed. Further, it is possible to prevent the truss frame from being corroded due to accumulation of dust or the like or retention of rainwater or the like. In addition, it is possible to prevent damage to the coating film provided on the truss frame due to accumulation of dust or the like or retention of rainwater or the like. As a result, it is possible to provide a highly weather-resistant cross-section box-type truss frame as an environment free of dust accumulation or rainwater retention, etc., and to extend the life of the cross-section box-type truss frame. Is obtained.
According to the second invention, a slit extending in the axial direction of the member is provided at the end of the lateral connecting beam and the diagonal member in the lateral direction, and the gusset plate is disposed in the longitudinal direction in the slit, and the longitudinal direction The gusset plate is provided with a slit extending in the axial direction of the member, and the connecting beam and the diagonal member in the lateral direction are disposed in the slit and fixed by welding. A slit is provided at the end of the diagonal member in the direction, and the part is placed on the vertical gusset plate, and the side connecting beam or the diagonal member in the horizontal direction is attached to the side (the string for the connecting beam). It can be fixed to the gusset plate of a string material or a connecting beam for materials or diagonal materials by welding, which not only facilitates welding work but also reduces the area on the upper surface side of the gusset plate Bets can be, as a result, it is possible to reduce the deposition of dust or the like on the upper surface side of the gusset plate, also can suppress the retention of rain water by rainwater or water washing or the like. Further, it is possible to prevent the truss frame from being corroded due to accumulation of dust or the like or retention of rainwater or the like. In addition, it is possible to prevent damage to the coating film provided on the truss frame due to accumulation of dust or the like or retention of rainwater or the like. As a result, effects such as extending the life of the truss frame can be obtained.
According to the third invention, the end of the connecting beam or the diagonal member in the lateral direction is fixed to the end by welding and is bolted via a gusset plate arranged vertically. Alternatively, there are both cases where a slit is provided at the end of the diagonal member in the lateral direction and where no slit is provided. Using a gusset plate that is fixed to the end by welding and arranged vertically, a lateral connecting beam or a diagonal member is attached to the side (the chord material for the connecting beam, Or it can be fixed to the gusset plate of the string material or connecting beam) for the diagonal material by bolting, not only the joining work becomes easy, but also the area on the upper surface side of the gusset plate can be reduced, As a result, accumulation of dust or the like on the upper surface side of the gusset plate can be reduced, and retention of rainwater due to rainwater or water washing can be suppressed. Further, it is possible to prevent the truss frame from being corroded due to accumulation of dust or the like or retention of rainwater or the like. In addition, it is possible to prevent damage to the coating film provided on the truss frame due to accumulation of dust or the like or retention of rainwater or the like. As a result, effects such as extending the life of the truss frame can be obtained.
According to the fourth invention, the end of the connecting beam or the diagonal member in the lateral direction is fixed to the end by welding and welded via a gusset plate arranged in the vertical direction. Alternatively, without using a slit at the end of the diagonal member in the horizontal direction, using a gusset plate that is fixed to the end by welding and arranged vertically, the horizontal connecting beam or the horizontal diagonal member Can be fixed to the gusset plate on the side to which these are attached (string material for the connecting beam, or chord material or connecting beam for the diagonal material) by welding, which facilitates the joining work. In addition, the area on the upper surface side of the gusset plate can be reduced, and as a result, the accumulation of dust and the like on the upper surface side of the gusset plate can be reduced. Retention of rain water can be suppressed that. Further, it is possible to prevent the truss frame from being corroded due to accumulation of dust or the like or retention of rainwater or the like. In addition, it is possible to prevent damage to the coating film provided on the truss frame due to accumulation of dust or the like or retention of rainwater or the like. As a result, effects such as extending the life of the truss frame can be obtained.
According to the fifth invention, in the cross-section box type truss frame for supporting the conveyor of the first invention or the second invention, the upper surface of the lateral connecting beam and the oblique member in the lateral direction is a steeply inclined upper surface, It is possible to prevent accumulation of dust, etc. or accumulation of rainwater on the upper surface of the horizontal connecting beam and the horizontal diagonal material. Also, when cleaning by water cleaning, it can be cleaned and cleaned efficiently with dust. In addition, it is possible to obtain an effect that the upper surface of the member can be dried more efficiently than in the case of a flat surface.
According to the sixth aspect of the present invention, in the cross-section box type truss structure for supporting the conveyor, the upper surfaces of all the members are inclined at 45 degrees or more, so that accumulation of dust or rain water stays on the upper surfaces of the members. In addition, when cleaning by washing with water, it is possible to wash and clean efficiently with dust, and the effect that the upper surface of the member can be dried more efficiently than in the case of a flat surface, etc. can get.
According to the seventh invention, in the cross-section box type truss frame for supporting the conveyor, the reinforcing steel plate is welded and fixed to the joint portion of the cross-section square steel pipe to which the gusset plate is joined to reinforce the tube wall of the cross-section square steel pipe. Thus, the rigidity of the square steel pipe can be improved.

It is a schematic perspective view which shows the principal part of the cross-section box type truss frame for conveyance conveyor support of the rose article of 1st Embodiment of this invention. (A) is a front view of the truss frame shown in FIG. 1, (b) is an enlarged view of a part thereof. It is a perspective view which expands and shows a part of FIG. It is a top view of FIG. It is a top view which expands and shows a part of FIG. The string material which attached the gusset plate to the vertical direction used in the truss frame of this invention is shown, Comprising: (a) is a top view, (b) is the sectional view on the aa line of (a), (c). FIG. 4 is a sectional view taken along line bb in FIG. 1 shows a connecting beam used in a truss frame according to the present invention, wherein (a) is a plan view, (b) is a sectional view taken along the line dd of (a), and (c) is an ee of (a). It is line sectional drawing. 2A and 2B show diagonal members used in the truss frame of the present invention, in which FIG. 1A is a plan view, FIG. 2B is an enlarged view of part of FIG. 1A, and FIG. FIG. It is the schematic of the truss frame of 1st Embodiment of this invention, Comprising: (a) is a top view, (b) is a side view. It is a schematic perspective view which shows the principal part of the cross-section box type truss frame for conveyance conveyor support of the rose article of 2nd Embodiment of this invention. (A) is a front view of the truss frame shown in FIG. 10, (b) is an enlarged view of a part thereof. It is a top view of FIG. It is the schematic of the truss frame of 2nd Embodiment of this invention, Comprising: (a) is a top view, (b) is a side view, (c) is gg sectional view taken on the line of (b). It is a perspective view which shows the form which connected the truss frame of 2nd Embodiment with an attachment board, and provided the scaffold part. It is a perspective view which expands and shows the connection part vicinity by the attachment plate of the truss frames adjacent in series in FIG. It is a perspective view which expands and shows a part of FIG. It is a schematic perspective view which shows the principal part of the cross-section box type truss frame for the conventional bulk object conveyance conveyor support. It is a front view of FIG. It is a perspective view which expands and shows a part of FIG. It is a longitudinal front view which shows the form which installed the conveyor for conveyance inside the truss frame. It is a perspective view which shows the cross-section box type truss frame for conveyor support by the truss frame which used the steel pipe for the string material. It is a perspective view which expands and shows the flange coupling connection part of FIG. It is a vertical front view which shows the form which installed the conveyor for conveyance on the upper side of a truss frame. It is a figure which shows the form of the test member of the rigidity of a cross-sectional square steel pipe, and is a front view and a side view. It is a perspective view which shows the form of the cross-sectional square steel pipe reinforced with the reinforcement steel plate. It is a figure which shows the form of the cross-sectional square steel pipe reinforced with the reinforcement steel plate, and is a front view and a side view. It is a figure which shows the form of the test member which tested the influence of the inclination-angle of a steel plate.

    Next, the present invention will be described in detail based on the illustrated embodiment.

  FIGS. 1 to 5 and FIG. 9 show a cross-sectional box-type truss frame 1 for supporting a conveyor for conveying loose objects containing powder such as coal or coke according to the first embodiment of the present invention. The main parts are shown. 1 is a schematic perspective view of a cross-section box-type truss structure 1 for supporting a conveyor, FIG. 2A is a front view of the truss structure 1 shown in FIG. 1, and FIG. FIG. 3 is an enlarged perspective view showing a part of FIG. 1, FIG. 4 is a plan view of FIG. 1, and FIG. 5 is a plan view showing an enlarged part of FIG. . FIGS. 9A and 9B respectively show a schematic plan view and a side view of the entire cross-sectional box-type truss frame 1 according to the first embodiment.

  This form is a truss structure in which the lower connecting beam 2 in the box-type truss structure 1 supports the conveyor frame, and corresponds to the form shown in FIG.

  First, main parts used in the box-type truss structure 1 of the present invention will be described with reference to FIGS. 6 to 8. FIG. 6 shows an upper chord member 4 or a lower chord member 5 in which a gusset plate 3 is fixed vertically. A first square steel pipe is shown, FIG. 7 shows a horizontal connecting beam 2 in which a gusset plate 3 is fixed vertically, and FIG. 8 has slits 6 penetrating vertically at both ends. A diagonal 7 is shown.

More specifically, FIG. 6 shows an upper chord member 4 or a lower chord in which a gusset plate 3 made of a steel plate is vertically arranged so as to extend in the vertical direction, and the base end side of the gusset plate 3 is fixed by welding. Material 5 is shown.
A steel square steel pipe is used as the upper chord member 4 and the lower chord member 5, and one corner portion 8 in the diagonal direction in the cross-sectional square shape is arranged at a high level position in each chord material 4 (5), and the top portion of the square cross-sectional shape It is arranged to be located in.
More specifically, the cross section of the square steel pipe is a square cross section, and the upper and lower surfaces of each chord 4 (5) are inclined at 45 ° because they are arranged so that the diagonal direction is vertical. The steeply inclined upper surface 9 and the steeply inclined lower surface 10 are formed. Further, a gusset plate 3 made of a steel plate is arranged vertically at the lower end portion of the upper chord member 4 or the upper end portion of the lower chord member 5 at a portion to be coupled with the bundle member, and is fixed by welding.
Further, the base end portion of the inclined gusset plate 3 made of steel plate is brought into contact with the steeply inclined upper surface 9 and the steeply inclined lower surface 10 of the string material by welding so as to be inclined and intersect the string material, It is fixed by welding.

Further, FIG. 7 shows a connecting beam 2 in which a gusset plate 3 made of a steel plate is arranged in the vertical direction and its proximal end side is fixed by welding.
As the connecting beam 2, a steel square steel pipe having an outer shape smaller than that of the chord 4 (5) is used as the second square steel pipe, and one diagonal corner (corner) 8 in the square steel pipe is square. It arrange | positions so that it may be arrange | positioned at the high level in a cross section, and may be located in the top part.
Similarly to the chord 4 (5), the upper and lower surfaces of the connecting beam 2 are steeply inclined at 45 ° because they are arranged so that the diagonal direction of the square cross section of the square steel pipe is vertical. An inclined upper surface 9 and a steeply inclined lower surface 10 are provided. Further, the base end portion of the inclined gusset plate 3 made of steel plate is brought into contact with the steeply inclined upper surface 9 and the steeply inclined lower surface 10 of the connecting beam 2 by welding so as to incline and intersect with the connecting beam 2. And fixed by welding W.
Furthermore, in order to insert and arrange the fixed gusset plate 3 on the string material 4 (5) side at the connecting portion of each steeply inclined upper surface 9 and the connecting portion of each steeply inclined lower surface 10 at both ends of the connecting beam 2. In addition, a slit 6 extending in the member axial direction is provided.
The slit 6 at the axial end of the connecting beam 2 is arranged between the chord members 4 (or between the chord members 5), and the gusset plate 3 fixed to the chord member 4 (5) side This is to fix the steeply inclined upper surfaces 9 on both sides of the connecting material 2 by welding W.
The string material 4 (5) to which the gusset plate 3 is welded is welded with a reinforcing steel plate 47 as shown in FIG. 25, whereby the rigidity of the string material 4 (5) is improved. Two steel plates may be welded to the reinforcing steel plate 47, or a cross-sectional L-shaped steel material such as angle steel may be welded. The gusset plate 3 is fixed to the reinforcing steel plate 47 by welding.
In addition, the upper surface of the truss frame member is inclined at least 45 degrees (at least 45 degrees) with respect to the horizontal plane, so that accumulation of dust or the like adhering to the upper surface or stagnation of rainwater can be prevented. In this case, it is possible to clean and clean with dust efficiently, and to obtain an effect that the upper surface of the member can be dried more efficiently than in the case of a flat surface. The members described here are all the components constituting the truss frame such as a connecting beam, string material, diagonal material, bundle material and the like.

Further, in FIG. 8, each side (plate) 38 is made of angle steel, and the sides (plates) 38 are arranged at the same left and right inclination angles so that the outer surface of the intersection corner portion 8 of each side (plate) 38 is the top. A horizontal diagonal member 7 is shown, and both end portions of the horizontal diagonal member 7 are provided with respective steeply inclined upper surfaces 9, and a gusset plate is inserted and disposed at a connection portion of the steeply inclined upper surface 9. A slit 6 extending in the member axial direction is provided so as to penetrate in the vertical direction. The width dimension of the slit 6 is slightly larger than the thickness dimension of the gusset plate 3.
The slit 6 of the diagonal member 7 in the horizontal direction is arranged in the vertical direction fixed to the string material 4 (5) by arranging the diagonal material 7 in the horizontal direction so as to intersect the string material 4 (5) and the connecting material 2. When the upper surfaces (plates) 38 on both sides of each slit of the laterally inclined material 7 are fixed to the gusset plate 3 and the vertical gusset plate 3 fixed to the connecting member 2 by welding W, from the member upper surface side, This is to facilitate welding. A slit (not shown) extending in the axial direction for inserting the horizontal diagonal material 7 into the vertical gusset plate is provided, and the width of the slit is slightly larger than the top of the diagonal material. Has been.

  1 to 5 and 9, the upper chord member 4 or the lower chord member 4 is arranged as the upper chord member 4 or the lower chord member 5 on the same vertical plane with a vertical interval therebetween. Between the materials 5, groove steel (or angle steel) is arranged as a bundle material or a vertical diagonal material in the vertical direction, and the groove steel (or angle steel) is placed on the vertical gusset plate 3 fixed to the chord material. Is used as the bundle member 11 or the longitudinal diagonal member 15, and the web 12 in the bundle member 11 or the longitudinal diagonal member 15 is fixed by welding or bolts to form the side truss beam 13.

  As described above, in the present invention, a square steel pipe (steel pipe having a square cross section) is used as the upper chord member 4 or the lower chord member 5 in each side truss beam 13, and one corner portion in the diagonal direction of each square steel pipe is used. Is placed at the top of the highest level. By arranging the square steel pipe as the chord material 4 (5) in this way, the upper surface of the chord material disappears from the flat upper surface, and the upper surfaces of the upper chord material 4 and the lower chord material 5 become the steeply inclined upper surfaces 9, respectively. Or it is no longer a recess, and it can be easily washed with rainwater or washed with water and can be removed by flowing in the width direction of the member, so that the cleaning effect by washing is improved, and accumulation of dust such as dust or retention of rainwater is prevented. ing. Further, the lower surface side of the upper chord member 4 and the lower chord member 5 is also a steeply inclined surface 10, which prevents dust from being attached as much as possible and improves drainage of water, making it an advantageous member for corrosion prevention.

  In the illustrated embodiment, a square steel pipe having a substantially square shape in cross section is used, and one diagonal direction is obtained by rotating the square steel pipe by 45 ° so that one diagonal direction is the vertical direction. Are in the vertical direction (vertical direction) and the other diagonal direction is in the horizontal direction.

The upper chord members 4 adjacent to each other in parallel with an interval made of a square steel pipe or the lower chord members 5 adjacent to each other with an interval made of a square steel pipe are connected by a connecting beam 2 as shown in FIG.
Each connecting beam 2 is connected to the chord material so that one diagonal direction in the square cross section is the vertical direction (for example, the vertical direction), like the square steel pipe in each chord material. 2 are arranged and connected to the respective chords 4 (5) via vertical gusset plates 3 by vertical arrangement or the like.
Further, the connecting beam 2 and the chord material 4 (5) are arranged with a diagonal member 7 in the lateral direction as shown in FIG. 4 (5) is connected via a vertically oriented gusset plate 3 by vertical arrangement or the like.
A vertical gusset plate having a vertical gusset plate 3 in which a plate-like gusset plate is vertically arranged on the chord 4 (5) or the connecting beam 2 side and its base end is fixed by welding. The attached string member 4 (5) or the connecting beam 2 with the vertical gusset plate is used.

  In addition, the upper and lower ends of the axial end portion of the connecting beam 2 and the axial end portion of the lateral diagonal member 7 are inserted into the central portion in the width direction so as to extend in the longitudinal direction of the member. The slits 6 are provided, and the members are joined to each other by joining by welding W via the gusset plate 3.

  Specifically, as shown in FIG. 2 (b) or FIG. 5, the slit 6 in the connecting beam 2 (or the slit 6 in the diagonal member 7 in the horizontal and equivalent horizontal direction) is connected to the chord member side. A vertical gusset plate 3 (or a vertical gusset plate 3 on the connecting beam 2 side, not shown) is inserted and arranged so as to protrude from the upper surface side of the slit 6, and a member (string material) The upper surface of the vertical gusset plate 3 on the side of 4 (5) or the connecting beam 2) is attached to the member (the slit 6 of the connecting beam 2 for the chord material and the lateral direction for the connecting beam 2). It arrange | positions so that it may protrude rather than the slit 6) of the diagonal material 7, and it adheres by the fillet weld W, and the string material 4 (5), the connecting beam 2, the string material 4 (5), and the diagonal material 7 of a horizontal direction. The connecting beam 2 and the diagonal member 7 in the lateral direction are fixed to these by fillet welding W. Linked via the plates 3.

  In the illustrated form, a truss structure having a box structure is formed in which the side trusses 13 are connected to each other by the connecting beam 2 and the diagonal member 7 in the lateral direction. Further, when it is necessary to connect the truss structures having the box-type structure as described above, although not shown, the chord member 4 (5) or the diagonal member 7 at the end of one box-type truss structure is omitted. By providing a joint portion connecting portion 40 (see FIG. 13 shown as the second embodiment) provided with a plurality of bolt insertion holes at the end and appropriately connected with an attachment plate or the like, a truss frame having a long cross-section box shape is provided. It may be set to 1.

In addition, the leg part in the conveyor for bulk material conveyance is installed in the connecting beam 2 etc. in the box shape in the cross-section box type truss frame 1 or the elongated truss frame 1A as described above. In this case, the upper surface or the side surface of the connecting beam 2 is a pair of steeply inclined upper surfaces or steeply inclined lower surfaces inclined at least 45 ° with respect to the horizontal plane, and also serves as a side surface. What is necessary is just to make it the leg part provided with the provided leg seat, and to fix to the connecting beam 2 grade | etc., With a volt | bolt or welding.
As a modification of the above embodiment, although not shown, welding from the lower surface side of the diagonal member made of angle steel may be used in combination.
As a modification of the first embodiment, when the connecting beam or the diagonal member is not provided with a slit, the vertical gusset plate on the side to be attached is fixed directly to the end of the connecting beam or the diagonal member by welding. You may do it. In this case, for example, when the connecting beam is a square steel pipe, a vertically oriented gusset plate fixed to the chord material by welding may be fixed to the upper and lower corner portions of the connecting beam by welding. A groove may be provided on the gusset plate side and the end of the square steel pipe may be disposed and fixed by welding. If the connecting beam or diagonal is angle steel, a vertical gusset plate fixed to the string side may be fixed to the inner corner of the angle steel by welding, or the gusset plate A groove may be provided in the end portion, and the end portion of the angle portion of the angle iron may be disposed in the groove of the gusset plate and fixed by welding. Even in such a form, the arrangement form of the square steel pipe or the angle steel is the same as that of the above embodiment, and the same effect as that of the above embodiment can be obtained.

(Second Embodiment)
10 to 16 show a box-type truss structure 1 according to a second embodiment of the present invention in which a conveyor for transportation is installed at the top.
Since this embodiment and the first embodiment have many similar elements, the same portions are denoted by the same reference numerals, and different portions will be mainly described.

A vertical gusset that is fixed to the upper chord member 4 or the lower chord member 5 by welding, using a bundle of steel members 11 forming a side truss beam 13 and a vertically arranged longitudinal diagonal member 15 made of steel channel. The web of the bundle material 11 and the vertical diagonal material 15 is brought into contact with the plate 3 and fixed by welding or the like.
Accordingly, except for the fact that the beam of the side truss beam 13 is low, it is the same as the case of the side truss beam 13 of the first embodiment. Further, the side truss beams 13 are spaced apart from each other as compared to the first embodiment, and the side ends where the steeply inclined upper surface 9 and the steeply inclined lower surface 10 of each upper chord member 4 (lower chord member 5) intersect. A vertical gusset plate 3 is fixed to the portion in a vertical direction so as to be inclined with respect to the longitudinal axis of the chord material. The vertical gusset plates 3 of the upper chord members 4 or the lower chord members 5 are connected to each other by connecting beams 2 made of angle steel so as to cross the chord members 4 (5). A slit 6 is provided at an end portion of the connecting beam 2 made of angle steel and inclined in the lateral direction, and the gusset plate 3 is fitted and arranged at that end, and is fixed by welding from the upper surface side of the inclined connecting beam 2. This is the same as in the above embodiment. In this embodiment, the chord members 4 (5) are arranged so that the end portions of the respective sides of the connecting beam 2 that is inclined in the horizontal direction made of mountain steel are positioned in the vicinity of the central axis line in the horizontal direction.

  For the connecting beam 2 inclined in the lateral direction, the same member as that of the diagonal member 7 shown in FIG. 8 is used.

  When it is necessary to connect the cross-section box-type truss frames 1 to each other and make them longer, as shown in FIG. 13, the end-side short box-type truss frame 1A and the intermediate-section truss frame 1A A plurality of bolt insertion holes are provided at intervals at the ends of the chord 4 (5) in the truss frame 1B having a box-type structure, and as shown in FIGS. The joints in the string member 4 (5) are connected to each other to form the joint connecting portion 40, and the truss frame 1C having a long cross-sectional box shape may be used. In this case, the connecting beam 2 inclined in the lateral direction or the diagonal member 15 inclined in the vertical direction may be arranged across the cross-sectional box-type truss frames adjacent in series. Further, a joint plate 43 may be provided at the end portion of the diagonal member 7 in the lateral direction so as to be joined to the gusset plate 3 on the side to which the diagonal member 7 is attached by the bolt joint 44. In FIG. 14, reference numeral 45 denotes an end column provided at the end of the cross-section box-type truss frame 1 </ b> A and fixed to the ends of the upper chord member 4 and the lower chord member 5 by welding. The lower portions of 45 are connected by a connecting beam 2. Further, a scaffold device 46 is provided so as to be supported by the bundle 11 or the like.

  In addition, the leg part in the conveyor for bulk material conveyance is installed in the string material 4 etc. on the box shape in the truss frame 1 of the cross-section box type as described above or the elongated truss frame 1C. In this case, the upper surface or the side surface of the connecting beam 2 is a pair of steeply inclined upper surfaces or steeply inclined lower surfaces inclined at least 45 ° with respect to the horizontal plane, and also serves as a side surface. What is necessary is just to make it the leg part provided with the provided leg seat, and to fix to the connecting beam 2 grade | etc., With a volt | bolt or welding.

  When the present invention is implemented, the structure in the vicinity of the bolt joint 44 in FIG. 14 is a joint between a string material and a connecting beam even when joints between parts other than the joint joint portion or joint joint itself is unnecessary. And may be applied to the joining of the chord material and the connecting beam to the diagonal material. For example, the base end side of the vertical gusset plate is fixed to the string material by welding, and the base end side of the vertical gusset plate is fixed to the connecting beam and the diagonal member, respectively. The plate and the vertical gusset plate on the connecting beam side may be overlapped and bolted with bolts and nuts. Similarly, the vertical gusset plate is fixed to the vertical gusset plate on the string side and the vertical gusset plate on the connecting beam side, and the vertical direction is applied to both ends of the diagonal made of angle steel. The gusset plates at both ends of the diagonal member are superposed on the vertical gusset plate on the string side or the vertical gusset plate on the connecting beam side, and bolted with bolts and nuts. May be. When joining superposed gusset plates, a plurality of bolt insertion holes are provided in advance in the gusset plate. In this way, when bolting the superposed gusset plates, the welding work becomes unnecessary, so there is no need to worry about the welding posture when assembling to the box cross section, and the box truss being assembled is inverted. It is possible to assemble a box-type truss frame without using joints (welding) or special joint details.

  When carrying out the present invention, although not shown in the drawings, a square steel pipe or angle steel may be used for the bundle material 11 or the diagonal material 7, and in this case, each corner of the square steel pipe or each of the angle steels may be used. The corner part outer surface to which the sides are connected is arranged so that the corner part becomes the upper end part. In relation to the vertical vertical gusset plate fixed on the chord material side, slits are provided in the diagonal direction of the square steel pipe with a square cross section, and each side of the angle iron is inclined at 45 ° with respect to the horizontal direction, for example So, by providing a slit vertically at the intersection of each side at the end of the member, there is no plane or recess on the upper side of the member, and further, a truss structure using a vertical gusset plate for joining these members, The accumulation of dust or the like, or the retention of rainwater or the like can be prevented, and the anticorrosion environment can be enhanced.

  In the case of carrying out the present invention, when the conveyor 33 for transportation is inclined and raised or lowered, the upper chord member 4 or the lower chord member 5 is inclined or lowered so as to be lowered or lowered. do it.

  When the present invention is carried out, although not shown in the drawing, the diagonal portion of the square steel pipe also has a top corner (or a shaft in the truss frame) in the portion of the bundle member 11 or the longitudinal diagonal member 15 in the square steel pipe. The corners of the corners where each side 38 of the angle steel connects is the top (or the side edges of the member in the axial direction of the truss frame). You may arrange. In particular, in the inclined ascending conveyance unit or the inclined descending conveyance unit in the belt conveyor, the entire cross-sectional box truss frame is inclined, and the bundle material 11 perpendicular to the chord material is also inclined from the vertical direction. Further, it is arranged on the bundle member 11 or the diagonal member 15 in the longitudinal direction such that one corner portion in the diagonal direction of the square cross section of the square steel pipe becomes the top portion (or the side end of the member in the axial direction in the truss frame). When the corners of the corners to which each side of the angle steel is connected are located at the tops (or the side ends of the members in the axial direction of the truss frame), as in the embodiment, the bundle 11 or the longitudinal direction Since the diagonal members 15 are inclined in the axial direction and their upper surfaces are steeply inclined upper surfaces, dust is deposited on the upper surface of the bundle member 11 or the vertical diagonal member 15 inclined from the vertical direction. Even the, easy cleaning cleaning by water, may drainage.

That is, when practicing the present invention, a square steel section with a square cross section is used as a bundle member or a longitudinal diagonal member in a cross section box type truss frame, and the diagonal direction of the square steel pipe with the cross section square is the diagonal direction. If it is arranged so as to be in the longitudinal direction of the cross-section box truss frame, not only can it be a highly rigid bundle or longitudinal diagonal, but it can also be used for bundles or longitudinal diagonals. In addition, it is possible to prevent dust or rainwater from staying and to make a truss frame that can be easily washed with water.
Further, when carrying out the present invention, angle steel is used as a bundle member or longitudinal diagonal member in a cross-section box-type truss frame, and the corner portion of the angle steel is more than the edge of each side 38 of the angle steel. If it is arranged so as to be at the upper part, it is possible to prevent dust or rainwater from staying in the bundle material or the diagonal member in the longitudinal direction as in the case of the fourth invention, and to make the truss frame easy to wash with water. Can do.

  When practicing the present invention, washing with water is preferably washing with high-pressure water. Because it has a steeply inclined upper surface 9 in the width direction of members such as chord members, connecting beams, bundle members, diagonal members inclined in the vertical direction, or if it is a vertical gusset plate, the width on the upper surface side is narrow, Since dust or rainwater can be flowed in the width direction of the member using water, dust or rainwater can be dropped and removed at a shorter distance than when dust or rainwater is flowed in the longitudinal direction of the member. .

  In the case of carrying out the present invention, when a grooved steel is used as the bundle member 11 or the longitudinal diagonal member 15, the grooved steel has an inclined arrangement except that it is arranged in the vertical direction. Since it becomes a portion that is difficult to clean on the lower side of the flange, as the bundle member 11 or the longitudinal diagonal member 15 of such a part, by arranging so that the corner portion of the square steel pipe or the angle iron becomes the upper part, It is desirable that the member does not have a shadowed lower flange. In addition, as a diagonal material in the longitudinal direction, when one side of the angle steel is disposed sideways, or when used in a form in which the web portion of the cut T-shaped steel obtained by cutting the web portion of the H-section steel is disposed sideways, Since the member itself is arranged in a steeply inclined state, it can function effectively for dust accumulation, rainwater retention, or cleaning removal by washing with water.

  When carrying out the present invention, it is desirable to use an equilateral angle steel as the angle steel, but other angle steels may be used.

1) Confirmation of structural performance Examples of the joint portion in the present invention will be shown.
FIG. 24 shows the state of implementation of a test for confirming the relationship between the dimensions and the strength of the upper chord member 4 or the lower chord member 5 and the gusset plate 3.
The specimen is a partial model of a truss frame. The model is composed of an upper chord member 4 or a lower chord member 5 and a gusset plate 3 and a lateral diagonal member 7. Both ends of the upper chord member 4 or the lower chord member 5 are fixed and compressive force and By applying the tensile force P, the stress state in the truss was reproduced, and the relationship between the tensile force and compressive force P of the diagonal member in the transverse direction and the joint deformations δ _C and δ _T was investigated.
The dimensions of the specimens are 150 mm and 175 mm in diameter for the upper chord member 4 or lower chord member 5, 4.5 mm and 6 mm in thickness, and 85 mm, 128 mm and 181 mm in width for the gusset plate 3.
As a result of the test, the yield strength of the joint increased as the plate thickness of the upper chord member 4 or the lower chord member 5 increased, and increased as the width of the gusset plate 3 increased. On the other hand, the influence of the pipe diameter of the upper chord member 4 or the lower chord member 5 was small. It is considered that the yield strength of the joint is determined by the breakage of the chevron cross section shown in the load bearing range of FIG. 25 including the corner of the square steel pipe to which the gusset plate 3 is joined.
As shown in FIG. 26, the L-shaped reinforcing steel plate 47 such as a steel chevron plate is welded and fixed to the load bearing range of the chevron cross section to reinforce the tube wall of the square steel pipe.
The increase in the proof stress of the square steel pipe having the cross section due to the reinforcement is proportional to the ratio of the thickness of the reinforcing steel plate 47 having an L-shaped cross section such as a steel angle plate to the thickness of the square steel pipe. For example, if the angle plate 4.5mm is welded and fixed to the plate thickness 6mm of the square steel pipe, the proof strength of the square steel pipe is 1.75 times the proof strength before reinforcement.
2) Confirmation of accumulation suppression performance An example in which the dust accumulation suppression effect in the present invention was confirmed will be shown.
Test specimens with different installation angles were installed below the operating belt conveyor, and the deposition status was confirmed.
As shown in FIG. 27, the test specimen was placed on a test stand with a flat steel plate 48 inclined at 0 °, 30 °, 45 °, 90 ° with respect to the horizontal plane, and the accumulated amount per unit area after 5 weeks. Was measured.
Regardless of the size of the particle size, dust and falling ore fell on the entire surface of the steel plate 48 formed of a horizontal flat plate with an inclination angle of 0 °. As the inclination angle of the steel plate 48 increases, the smaller the particle size remains, but the amount of accumulation of the larger particle size clearly decreases, and the difference becomes more remarkable as the inclination angle of the steel plate 48 with respect to the horizontal plane increases.
Deposition amount per unit area, is inclined 0 8.0 g / cm ^2, at 30 ° 2.4 g / cm ^2, at ^{45 ° 0.8g / cm 2, 90} 0.02g / cm 2 becomes in ° in °, 45 ° or more As a result, a sufficient deposition suppressing effect was exhibited.

DESCRIPTION OF SYMBOLS 1 Section box type truss frame 1A Short section box type truss frame 1B Short section box type truss frame 1C Long section box type truss frame 2 Connecting beam 3 Gusset plate 4 Upper chord material 5 Lower chord material 6 Slit 7 Horizontal diagonal member 8 One corner 9 Steeply inclined upper surface 10 Steeply inclined lower surface 11 Bundle member 12 Web 13 Side truss beam 15 Vertical diagonal member 20 Truss frame 21 Cross section H-shaped steel member 22 Flange 23 Upper chord member 24 Lower chord member 25 Vertically oriented gusset plate 26 Channel steel 27 Bundle material 28 Diagonal material 29 Side truss beam 30 Connecting beam 31 Lateral gusset plate 32 Lateral diagonal material 33 Conveyor for conveyance 34 Frame 35 Leg 36 Arc-shaped gently inclined surface 37 End Joint flange 38 Side 40 Joint connecting part 41 Binder plate 42 One side bolt 43 Joint plate 44 Bolt joint 45 End column 46 Scaffolding device 47 Reinforced steel plate 48

Claims (7)

  In a cross-section box type truss frame for conveyor support, which has multiple upper chord members and multiple lower chord members that are parallel to each other at intervals, arranged so that one diagonal corner of the square steel pipe is positioned at the top The first square steel pipe is arranged at a predetermined position as an upper chord material or a lower chord material at each corner of the truss frame, and one diagonal corner portion of the square steel pipe is arranged at the top. The second square steel pipe or the angle steel arranged so that the corner portion is located at the top is arranged at a predetermined position as a horizontal connecting beam or a horizontal diagonal in the truss frame, and the connecting beam or the horizontal direction The end portion of the diagonal member is fixed to the end portion by welding and joined through a gusset plate arranged in a vertical direction. Truss Frame.   A slit extending in the axial direction of the member is provided at the end of the lateral connecting beam and the diagonal member in the lateral direction, and a gusset plate is disposed vertically in the slit and is fixed by welding. The cross-section box-type truss frame for supporting a conveyor according to claim 1.   The end portion of the connecting beam or the diagonal member in the lateral direction is fixed to the end portion by welding and is bolted via a gusset plate arranged vertically. Cross-section box type truss frame for supporting conveyors.   The end portion of the connecting beam or the diagonal member in the horizontal direction is fixed to the end portion by welding and welded to the end portion through a gusset plate arranged vertically. Cross-section box type truss frame for supporting conveyors.   The cross-section box-type truss structure for supporting a conveyor according to any one of claims 1 to 4, characterized in that the upper surfaces of the lateral connecting beams and the lateral diagonal members are steeply inclined upper surfaces. . The cross section box for conveyor support according to any one of claims 1 to 4, wherein an upper surface of a member of the cross section box type truss frame for supporting the conveyor is inclined at least 45 degrees with respect to a horizontal plane. Type truss frame. The pipe wall of a square steel pipe having a cross section is reinforced by fixing a reinforcing steel plate to a joint portion of the square steel pipe to which the gusset plate is joined by welding. Sectional box type truss frame for supporting a conveyor as described in 1.

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