JP6697318B2 - Belt conveyor and method of constructing belt conveyor - Google Patents

Description

  The present invention relates to a belt conveyor having a curved section in a conveying section, and more particularly to a belt conveyor in which an endless conveying belt is stretched along a linear shape of a conveying path drawn by a conveying section including a curved section.

  As a belt conveyor having a curved section in the conveying section (hereinafter, also referred to as "bending conveyor"), for example, the techniques described in Patent Documents 1 and 2 are disclosed. In the music feeding conveyors described in Patent Documents 1 and 2, a large number of sets of carrier rollers (and return rollers) provided on individual support frames are arranged along the linear shape of the transport path.

JP, 2011-020766, A (paragraph 0002, Drawing 8, Drawing 9) JP, 2010-159125, A (paragraph 0002, Drawing 2, Drawing 4).

However, the music transfer conveyors described in Patent Documents 1 and 2 require foundation work for each of a large number of support frames. In addition, a large work space is required around the building in accordance with the scale of construction. This problem becomes more remarkable as the extension distance of the bending conveyor increases.
Therefore, the present invention has been made by paying attention to such problems, and provides a belt conveyer and a method of constructing a belt conveyer which can be constructed by a simple foundation work and can be removed easily and quickly thereafter. This is an issue.

In order to solve the above problems, a belt conveyor according to an aspect of the present invention is a belt conveyor in which an endless belt- shaped conveyor belt is stretched along a linear shape of a conveyor path drawn by a conveyor section including a curved section. A plurality of laying units for partitioning the midway portion of the transport section, each laying unit having a casing configured such that the longitudinal direction thereof is the transport direction; conveyance path center of itself and has a semicircular supporting shape for supporting to guide the semicircular arc shape upward the conveyor belt in the forward side Te is arranged so as to be aligned in a straight line, further tracks of said conveyor belt It is possible to adjust the bank posture at the time of feeding while maintaining the semi-circular arc supporting shape around the center of the transport path, and the circumferential direction of the semi-circular belt having the semi-circular arc shape in the bank range when the transport belt is bent. A plurality of carrier roller sets configured to allow movement of the conveyor belt and a plurality of return roller sets arranged to guide the transport belt on the return path side along the longitudinal direction of the case. However, the plurality of laying units, in plan view, a part of the outer periphery of a polygon that approximates the linear shape of the transport path is drawn by a straight line connecting the transport path centers of the plurality of carrier roller sets , It is characterized in that it is arranged at a position where a straight line connecting the transport path centers of adjacent installation units intersect with each other.

  According to the belt conveyor of one aspect of the present invention, the plurality of laying units are arranged at positions where the straight lines connecting the transport centers of the adjacent laying units intersect with each other in a plan view, so that the linear shape of the transport path is obtained. Since a part of the outer periphery of the polygon that approximates the shape is arranged so that a straight line connecting the transport centers is drawn, a plurality of laying units can construct a linear shape of the transport path that is drawn by the transport section including the curved section. Therefore, as compared with the case where a large number of individual support frames are constructed, the belt conveyor can be constructed by the foundation work for each laying unit. Therefore, the construction work can be simplified, and the subsequent removal work can be performed for each laying unit, so that the removal work can be performed easily and quickly.

Here, in the belt conveyor according to an aspect of the present invention, it is preferable that the laying unit has wheels that can run on rails laid along the linear shape in a lower portion of the housing. With such a configuration, each laying unit can travel on the rails, which is suitable for performing the work easily and quickly when installing and removing the laying unit.
In order to solve the above problems, a method for constructing a belt conveyor according to one aspect of the present invention is a method for constructing a belt conveyor according to any one aspect of the present invention, wherein the plurality of laying units are provided. Using a plurality of the laying units, in plan view, a part of the outer periphery of a polygon that approximates the linear shape of the transport path is drawn by a straight line connecting the transport centers, so that the adjacent laying units are mutually It is characterized in that it is arranged at a position where straight lines connecting the transport centers intersect.

  According to the method for constructing a belt conveyor according to an aspect of the present invention, a plurality of laying units are arranged at positions where straight lines connecting the transport centers of adjacent laying units intersect with each other in plan view, Since a part of the outer periphery of the polygon that approximates the linear shape of the path is arranged so that a straight line connecting the transport centers is drawn, the belt conveyor according to one aspect of the present invention achieves a simple basic construction of the belt conveyor by the operational effects. And can be removed easily and quickly.

  Further, in the method for constructing a belt conveyor according to an aspect of the present invention, when the laying unit has wheels that can run on rails laid along a linear shape at the bottom of the housing, The unit is installed at a predetermined position by pushing it forward on a rail previously laid along the linear shape of the transport path using a vehicle such as a forklift. This construction method is suitable for easily and quickly performing the installation and removal of the installation unit.

  As described above, according to the present invention, the belt conveyor can be constructed by a simple foundation work, and the subsequent removal can be performed easily and quickly.

It is a schematic diagram explaining one Embodiment of the belt conveyor which concerns on 1 aspect of this invention, the same figure (a) is a top view of a laid state, (b) is a front view. It is a schematic diagram which expands and shows the X section of Fig.1 (a). It is a side view of a laying unit (standard unit), and the same figure shows the A arrow view of FIG. It is explanatory drawing of one Embodiment of a standard unit, the same figure (a) is BB sectional drawing of FIG. 2, (b) is an enlarged view of the installation unit part in (a). It is a figure explaining the carrier roller group of a laying unit, the figure (a) is a front view, the figure (b) is a top view, and the figure (c) is a right view. It is a figure ((a)-(c)) explaining the mounting posture of the carrier roller group of a laying unit. It is explanatory drawing of one Embodiment of an open unit (coupling unit) of a laying unit, the figure (a) is CC sectional drawing of FIG. 2, (b) is a laying unit part in (a). FIG. It is an explanatory view of one embodiment of a special unit (connection unit) among laying units, and the figure is an enlarged view of a laying unit part in a DD cross section of Drawing 2. It is an explanatory view of an embodiment of a spanning unit of a laying unit, the figure (a) is an EE sectional view of Drawing 2, and the (b) is an enlarged view of the laying unit part in (a). is there. It is an explanatory view of one embodiment of a slope unit of a laying unit, and the figure is an enlarged view of a laying unit portion in a ZZ cross section in FIG.

An embodiment of the present invention will be described below with reference to the drawings. Here, the belt conveyor of the present embodiment is a long facility that is connected to the earth and sand mining site by tunnel construction and has a total length of several kilometers, and is used to convey objects to be conveyed such as excavated earth and sand from the mining site. It is an example.
The drawings are schematic. Therefore, it should be noted that the relationship between the thickness and the plane size, the ratio, and the like are different from the actual ones, and the drawings include portions in which the dimensional relationship and ratio are different from each other. In addition, the embodiments described below exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention is that the material, shape, structure, and arrangement of components are Etc. are not specified in the following embodiments.

  As shown in FIG. 1, the belt conveyor 1 is installed along an existing road M connected to a road construction site including tunnel construction. Road M has a plurality of driving lanes L and a median strip S. The belt conveyor 1 is laid using one lane of the plurality of traveling lanes L that is closest to the median strip S. Therefore, basically, the linear shape of the road M matches the conveyance route of the belt conveyor 1. Further, the transport section H of the belt conveyor 1 is configured to include a curved section R. Therefore, in the present embodiment, a belt conveyor (hereinafter, also referred to as a “conveying conveyor”) capable of curving is laid.

More specifically, as shown in the figure, the music transporting conveyor 1 includes a cylindrical header roller 3 arranged at the tip of the conveying path, a cylindrical footer roller 4 arranged at the tail end, and endless conveying. And a belt 2. The conveyance belt 2 is wound around the header roller 3 and the footer roller 4 along the linear shape of the conveyance path.
The conveyor belt 2 is a belt-shaped member having a laminated structure, and is formed in an endless shape by joining together a plurality of belt materials divided into a plurality in the conveying direction. Each belt material is a cord, which is not shown below, and is a linear core material for reinforcement that is embedded in multiple threads in the width direction, an intermediate rubber layer filled around the cord, and the front and back surfaces of the intermediate rubber layer. And a wear-resistant cover rubber layer that is laminated. The conveyor belt 2 is endlessly formed by vulcanizing and joining the ends of a plurality of belt materials to each other on site.

  The header roller 3 side is arranged so as to be inclined upward as it goes from the transport source to the transport destination. As a result, the equipment on the header roller 3 side is installed at a position separated from the road M upward. Below the header roller, four drive rollers 5 to which a drive device 7 is attached are arranged. Further, below the header roller 3, a hopper 6 is provided so that an object such as excavated earth and sand can be dropped. It should be noted that the image in which the transported object is dropped is shown by a white arrow with a symbol G.

  The footer roller 4 side is installed at the branch position of the upper and lower lines of the road M so as not to interfere with the existing road M and its related equipment. On the footer roller 4 side, facilities such as a tensioning mechanism for the conveyor belt 2, a counterweight, and a cleaning device, which are not shown, are arranged. Further, on the footer roller 4 side, loading devices for loading an object to be transported onto the transport belt 2 are arranged, for example, at two locations in the transport direction (positions of white arrow F in FIG. 7B). In this example, the footer roller 4 is also provided with a drive device 7 for driving the conveyor belt 2.

Here, as shown in FIG. 1B, the music transporting conveyor 1 is provided with a plurality of laying units 10 for guiding an intermediate portion of the conveyor belt 2 along the road M. In the plan view shown in FIG. 1A, the plurality of laying units 10 connect a part of the outer periphery of a polygon, which is close to the linear shape, along the linear shape of the road M, which is the transfer route, to the transfer center. Arranged as a straight line.
In particular, the music transfer conveyor 1 of the present embodiment includes a standard unit 20, connecting units 30, 40, and a spanning unit 50 as a plurality of laying units 10, as shown in an enlarged view in FIG. 2. In these laying units 10, an appropriate laying unit 10 is selectively laid along the linear shape of the transport path drawn by the transport section H including the curved section R.

In the present embodiment, the standard unit 20 is installed along the road M on one side and the road M on the other side sandwiching the median strip S. The spanning unit 50 is installed at a position above the median strip S so as to straddle the median strip S. The connection units 30 and 40 are installed at positions connecting the standard unit 20 and the spanning unit 50.
As shown in FIG. 3, the standard unit 20 has a housing 11 configured such that its longitudinal direction is the transport direction. The casing 11 is a frame body made of a shaped steel (H-shaped steel, equilateral angle shaped steel, groove shaped steel, etc.) and formed into a rectangular parallelepiped shape by welding and fastening bolts and nuts. The housing 11 includes a rectangular base 11a having a longitudinal direction as a transport direction, a plurality of columns 11b erected at appropriate positions of four corners and long sides of the base 11a, and upper end portions of the plurality of columns 11b. A plurality of beams 11c that connect the two columns and a plurality of body differences 11d that connect the intermediate portions of the plurality of columns 11b to each other.

  At the lower part of the base 11a, wheels 12 are provided at a total of four positions on the left and right, spaced apart in the front and rear of the housing 11. On the other hand, on the road M, two rails 91 are laid at the position where the belt conveyor 1 is laid. The two rails 91 are laid in parallel on the road M along the linear shape of the road M. As a result, the standard unit 20 can travel on the pair of left and right rails 91 by the lower wheel 12.

  In the case 11 of the present embodiment, the case 11 is divided into upper and lower parts by a body difference 11d provided at a substantially middle portion of a plurality of columns 11b. As a result, the standard unit 20 has two floors, the upper floor U and the lower floor D. On the upper floor U of the housing 11, a plurality of carrier roller sets 70 are installed. The carrier roller set 70 is a belt guide device for supporting the conveyor belt 2 from below and guiding it on the outward path side along the conveyance direction. A plurality of carrier roller sets 70 are arranged on the upper floor U with respect to each housing 11 at predetermined intervals along the longitudinal direction of the housing 11.

Further, a plurality of return roller sets 80 are installed on the lower floor D of the housing 11. The plurality of return roller sets 80 are arranged so as to guide the transport belt 2 along the longitudinal direction of the housing 11 on the outward path side.
As shown in FIG. 4, when the work passage W of the worker P is provided on the upper surface of the base 11a and the upper surface of the body difference 11d, the worker P can walk to a position corresponding to the work passage W. In addition, a floor surface 11f using a punching metal or the like as a floor plate is provided.

As shown in FIG. 5, each carrier roller set 70 includes a semi-arcuate support frame 71 directed upward, and a pair of support legs detachably provided on the left and right of the outer peripheral surface of the support frame 71 with bolts and nuts. 72, and a plurality of carrier rollers 73 arranged in a semi-circular shape along the inner peripheral surface of the support frame 71.
Each carrier roller 73 is a guide roller having a cylindrical shape, and both ends thereof are supported rotatably about their own axes. The plurality of carrier rollers 73 are arranged in two stages, the front side and the rear side in the transport direction, as shown in FIG. Further, the plurality of carrier rollers 73 are arranged so that the carrier rollers 73 adjacent to each other in the circumferential direction of the support frame 71 are staggered in the front and rear.

  Each of the carrier roller sets 70 is installed so as to be able to be guided along the carrying direction while supporting the carrying belt 2 in a curved state of a semi-circular shape from below by the cooperation of the plurality of carrier rollers 73. As a result, in the curved section R shown in FIG. 1, the plurality of carrier rollers 73 respectively installed on the respective support frames 71 are arranged in a bank range when the transport belt 2 is bent and are arranged around the circumference of the transport belt 2 in a cross-sectional view. The conveyor belt 2 can be supported in a trough shape so as to allow movement in the direction.

  Further, the carrier roller set 70 of the present embodiment can set a plurality of postures in order to adjust the transport posture of the transport belt 2 according to the alignment of the road M. That is, the support frame 71 has a plurality of sets of transporting posture adjusting holes 74, as shown in FIG. The transport posture adjusting holes 74 are formed so that bolts and nuts can be fastened, and are provided at a plurality of locations along the circumferential direction of the support frame 71. The carrier roller group 70 can change the fastening position in the circumferential direction of the semi-arcuate support frame 71 with respect to the pair of support legs 72 by using a plurality of transport posture adjustment holes 74.

  As a result, for example, as shown in FIGS. 6A to 6C, the tilted attitude of the support frame 71 (bank angle according to the curvature of the transport path) can be changed to a linearly tilted attitude. .. Note that FIG. 6A shows a state in which the support frame 71 is mounted at a position where the maximum inclination is to the right in the figure, FIG. 6B is the center, and FIG. In the figure, the two-dot chain line shows the image of the conveyor belt 2, and the one-dot chain line shows the image of the object K to be conveyed.

  As shown in FIG. 3, the return roller group 80 is a belt guide device for guiding the conveyor belt 2 on the return path side. A plurality of return roller sets 80 are arranged for each housing 11 at predetermined intervals along the longitudinal direction of the housing 11, and the transport belt 2 is provided on the return path side along the longitudinal direction of the housing 11. It is installed to guide you. As shown in FIG. 4B, the return roller set 80 supports the conveyor belt 2 wound in a cylindrical shape (pipe shape) from three sides in the circumferential direction and extends along the conveyance direction in a cross-sectional view. invite.

  As shown in FIG. 4B, each return roller group 80 has a rectangular frame-shaped support frame 81 surrounding the wound conveyor belt 2. The support frame 81 is detachably fixed to the inner surface of the housing 11 via a support frame 82 with bolts and nuts. A plurality of return rollers 83 are mounted on the inner surface of the support frame 81. Each of the return rollers 83 is a guide roller having a cylindrical shape, and both ends thereof are supported rotatably around their own axes.

  The plurality of return rollers 83 are equidistantly arranged in the circumferential direction so as to support the conveyor belt 2 wound in a cylindrical shape. In the present embodiment, the return rollers 83 are arranged at a total of three places, that is, one place on the upper side of the conveyor belt 2 wound in a cylindrical shape and two places on the lower side separated by 120 ° in the circumferential direction. As a result, the plurality of return rollers 83 respectively installed in the respective support frames 81 cooperate with each other to convey the conveyor belt 2 while supporting the conveyor belt 2 in a cylindrical (pipe-shaped) winding state from three directions in the circumferential direction. It is possible to guide along the direction.

  Here, in the case of the standard unit 20 of the laying unit 10, the maximum dimension V in the width direction of the carrier roller set 70 on the upper floor U (see FIG. 5A) is as shown in FIG. 4B. , Are set to be almost equal to the inner dimension of the housing 11. Therefore, as shown in the figure, the center CL in the width direction of the upper floor U and the transport center Cu of the plurality of carrier rollers 73 arranged in a semi-circular shape are substantially coincident with each other. As a result, the transport centers Cu of the plurality of carrier rollers 73 installed on the respective support frames 71 are arranged so as to be aligned on a straight line along the longitudinal direction of the housing 11.

  On the other hand, in the lower floor D, the return roller group 80 is installed at a position offset to one side. Therefore, as shown in the figure, the transport center Cd of the plurality of return rollers 83 of the return roller set 80 is biased to one side with respect to the transport center Cu of the carrier roller set 70. In other words, the plurality of return rollers 83, which are respectively installed on the respective support frames 81, are displaced to the left or right of the lower floor D by the displacement amount Ex with respect to the transport center Cu of the plurality of carrier rollers 73 on the outward path. Placed in position.

As a result, the lower floor D is set with a work passage W on which the worker P can walk on the side opposite to the return roller group 80. When the work passage W is used, the upper surface of the base 11a is A floor surface 11f is provided at a portion to be the work passage W. In the case of the standard unit 20, the floor is not provided on the upper floor U.
Next, the connecting units 30 and 40 and the spanning unit 50 will be described. The laying unit 10 other than the standard unit 20 described above has the same configuration as the standard unit 20 unless otherwise specified. Therefore, the same reference numerals are given to the common configurations, and the description thereof will be appropriately omitted.

Here, when the road M is an expressway, it is legally necessary to provide a stop N for each predetermined distance as shown in FIG. Therefore, at the position where the stop zone N is provided, the traveling lane L cannot be used for laying the curving conveyor 1. In other words, at the position where the stop zone N is provided, the curved conveyor 1 cannot simply be laid along the linear shape of the road M.
Therefore, in the present embodiment, as the laying unit 10, in addition to the standard unit 20, the connecting units 30, 40 and the spanning unit 50 are prepared, and by combining these, as shown in FIG. The curving conveyor 1 is laid using the upper part of S and the opposite lane. In particular, in this embodiment, the open unit 30 and the special unit 40 are prepared as the connecting unit.

  Specifically, the open unit 30 of the connecting units is a laying unit installed in the open section O, and as shown in FIG. 7, the base 11a on the lower side of the housing 11 is the same as the standard unit 20. ing. Therefore, the width of the lower portion is the same as that of the standard unit 20. However, it is different in that a widened portion Ew is provided in the upper portion from substantially the center of the lower floor D. Since the open unit 30 has the widening portion Ew, the widthwise dimension of the lower floor D from the substantially center to the upper portion is wider than that of the standard unit 20.

  The open unit 30 uses a widening area widened in the width direction by the widening portion Ew to provide punching metal or the like also on the upper floor U to the side of the carrier roller set 70 so that the worker P can walk. A floor surface 11g used for the floor plate is provided. In addition, the open unit 30 can install the stairs St that can move between the lower floor D and the upper floor U. Accordingly, the open unit 30 is suitable for being laid in the open section O of the road M excluding the tunnel (culvert) section T, and from the lower floor D to the upper floor U by the stairs installed using the widening area. The following work passage W can be easily constructed.

  As shown in FIG. 8, the special unit 40 of the connecting units uses a base 11w (and a body difference 11d) below the housing 11 that is longer than the standard unit 20 in the width direction. Therefore, the size of the housing 11 in the width direction is different from the standard unit 20 in that it is wider than the standard unit 20 as a whole. The width dimension of the housing 11 of the special unit 40 is wider than that of the standard unit 20 by the widened portion Ew.

Thereby, the special unit 40 can secure the work passage W in both the upper floor U and the lower floor D by utilizing the widened region in which the housing 11 is widened in the width direction. Further, the special unit 40 is installed so as to utilize the widening area and sequentially change the deviation amount Ex of the plurality of return roller sets 80 in the width direction of the housing 11 according to the required curvature.
In particular, when the transport direction is changed in the stop N, the special unit 40 is similar to the standard unit 20 in the transport center Cu of the plurality of carrier rollers 73 installed on each of the outward support frames 71. They are arranged on a straight line along the longitudinal direction of the body 11. On the other hand, in the special unit 40, the plurality of return rollers 83, which are respectively installed on the respective support frames 81 for the return path, are located on either side of the lower floor D with respect to the transport center Cu of the plurality of carrier rollers 73. A plurality of support frames 81 are arranged so that the positions biased to the other are gradually replaced. For example, as shown in the figure by the two-dot chain line, the movement center Cd by the plurality of return rollers 83 can be set in multiple steps within the range from the conveyance center Cd1 to the conveyance center Cd2.

  As a result, the special unit 40 can smoothly change the carrying position in the width direction of the carrying belt 2 on the return path when changing the carrying direction in the stop N. Further, the special unit 40 can use the widened region of the housing 11 to install stairs or ladders on the front and rear side surfaces of the housing 11. Therefore, if the special unit 40 is used, the width of curvature change in the unit can be set wide, and the working passage W continuing from the lower floor D to the upper floor U can be easily constructed.

  In addition, as shown in FIG. 9, the spanning unit 50 of the connecting units is wide at the height of the upper floor U so that it can span above the median strip S at the position where the stop N is provided. The base 11w is placed. Therefore, unlike the standard unit 20 and the connecting unit 40, the bridging unit 50 does not have a body difference 11d and does not have a vertical hierarchical structure, as shown in FIG. In the spanning unit 50, a plurality of return roller sets 80 are installed at the center CL in the width direction of the base 11w along the longitudinal direction of the housing 11. Further, in the straddling unit 50, the plurality of carrier roller sets 70 are directly arranged along the longitudinal direction of the housing 11 with the pair of support legs 27 placed on the upper part of the support frame 82 of the return roller set 80. It is installed.

  The spanning unit 50 has a widthwise dimension larger than that of the standard unit 20 by the deviation amount Ex, for example, and working passages W are secured on both left and right sides of the return roller set 80 and the carrier roller set 70. Further, in the spanning unit 50, the base 11w is arranged so as to span above the central separation band S. Therefore, the straddle unit 50 can be provided with stairs or ladders on the front and rear side surfaces of the base 11w. This allows the worker P to move from the road M to each work passage W provided on the left and right of the base 11w.

  Further, in the present embodiment, the slope unit 60 shown in FIG. 10 is installed on the header roller 3 side where the conveyor belt 2 is arranged so as to be inclined upward (see FIG. 1). As shown in the same figure, the slope unit 60 has a wide base 11w as in the straddle unit 50, does not have a body difference 11d, and does not have an upper and lower hierarchical structure. Since the slope unit 60 is installed in the open section O above the tunnel section T, the roof 11r is provided on the unit ceiling.

  The slope unit 60 is used only in the linear portion near the header roller 3 side. Therefore, the structure of the carrier roller group is different from that of the spanning unit 50. The carrier roller set 70S of the slope unit 60 is configured by a plurality of carrier rollers including a central horizontal roller 73A and inclined rollers 73B symmetrically arranged on the left and right of the horizontal roller 73A. The cross-sectional view is supported in a substantially fan shape.

Next, a method of laying the music feeding conveyor 1 will be described.
As described above, when laying the music feeding conveyor 1, the road M connecting to the tunnel construction site is used as an intermediate part of the music feeding conveyor 1. Therefore, basically, the transportation route of the conveyor 1 has a linear shape of the road M. In the present embodiment, the road M is a highway, and the lane closest to the median lane S among the plurality of travel lanes L is used. Before laying the curved conveyer 1, two rails 91 parallel to the linear shape of the road M are laid in advance on the road surface of the lane closest to the median strip S. Further, basic work necessary for installing the plurality of laying units 10 (for example, installation of fixing blocks) is performed. The various equipment on the side of the header roller 3 and the various equipment on the side of the footer roller 4 are installed at a location where they do not interfere with the road M and the equipment related thereto.

  Next, using the plurality of types of laying units 10 described above, the laying units 10 are sequentially arranged so as to draw a polygon that approximates the linear shape of the road M. That is, in the laying units 10, in a plan view, the transport centers Cu of the adjacent laying units 10 are arranged such that a straight line connecting the transport centers Cu draws a part of the outer periphery of the polygon that approximates the linear shape of the transport path. It is placed at the position where the connecting straight lines intersect. In the present embodiment, each laying unit 10 is installed on a predetermined position on the road by pushing the rails 91 laid beforehand in advance using a vehicle such as a forklift. Each laying unit 10 is placed and fixed on a fixing block or the like at a predetermined position.

  In particular, in the stop N and its vicinity, as shown in FIG. 2, compact laying is performed by the continuous standard units 20 in the tunnel section T in order from the left side of the figure, and in the subsequent release section O, the standard units 20 are installed. Instead, the connection units 30 and 40 are sequentially laid according to the required curvature. Next, in the vicinity of the position where the central separating strip S is crossed and at a position above the central separating strip S, the straddling unit 50 is used to get over the central separating strip S. The spanning unit 50 can be installed using a working machine such as a crane.

  Next, when shifting to the opposite lane, the connecting units 40 and 30 are sequentially laid according to the required curvature. Thereafter, the standard unit 20 lays down compactly along the opposite lane in the area along the stop N. After that, when the area of the stop zone N is finished, it is possible to return to the first lane by sequentially laying the laying units 10 in the laying order opposite to the laying order described above.

  As a result, as shown in the figure, it is possible to lay the conveyor belt 1 while avoiding the stop N while securing the stop N at a predetermined position. Further, since the laying unit 10 laid in the stop N and the vicinity thereof is constructed by the connecting units 30 and 40 connecting the spanning unit 50 and the standard unit 20 to the spanning unit 50, the work passage of the worker P It is possible to reliably secure W.

It should be noted that, although the description has been made with reference to the drawing, the drawing is a schematic diagram, and the laying units 10 are not limited to being arranged in the number shown in FIG. Of course, the number of units 10 may be increased or decreased. In the figure, the arrow added to each laying unit 10 shows an image of the worker P walking in the work passage W.
After each laying unit 10 is installed at a predetermined position, a plurality of belt materials are sequentially connected on site to form the endless conveyor belt 2. The conveyor belt 2 connects the belt materials while being wound around the footer roller 3, the carrier roller group 70 of each laying unit 10, the header roller 3, each drive roller 5, and the return roller group 80 of each laying unit 10. As a method for connecting the belt materials to each other, the cover rubber layer and the intermediate rubber layer are removed at a pair of end portions of the belt materials to expose a cord having a predetermined length.

  Next, the pair of exposed ends are abutted, and the cords extending from the ends are alternately juxtaposed. Then, the unvulcanized rubber composition for forming the intermediate rubber layer is disposed around the belts of the cords alternately juxtaposed in the thickness direction and the width direction. Further, the unvulcanized rubber composition for forming the cover rubber layer is also laminated on the front surface and the back surface of the intermediate rubber layer. Then, the unvulcanized rubber composition is vulcanized to integrally form the intermediate rubber layer and the cover rubber layer, and the belt materials are firmly connected to each other.

Next, the operation, operation, and effect of the music transporting conveyor 1 of this embodiment will be described.
In the music transporting conveyor 1 of the present embodiment, when a plurality of drive rollers 5 are driven, the conveyor belt 2 starts infinite circulation between the leading header roller 3 and the trailing footer roller 4. The conveyor belt 2 is wound in a flatly spread state in the vicinity of the cylindrical header roller 3 and the cylindrical footer roller 4. Further, in the laying unit 10 installed in the middle of the transport path, on the outward path, the carrier roller set 70 on the upper floor U of the laying unit 10 opens the transport belt 2 upward to form a substantially U-shaped cross section. It is conveyed in an arcuate supporting state. Further, on the return path, the return roller group 80 on the lower floor D conveys the material in a cylindrically wound state.

  As a result, according to the bending conveyor 1 of the present embodiment, the endless conveyor belt 2 is circulated in the supported state of the substantially U-shape on the outward path of each laying unit 10, so that the spillage during conveyance is spilled. Can be prevented. Further, on the outward path of each laying unit 10, since the conveyor surface is inwardly circulated in a cylindrically rounded pipe state, even when returning to the outward path with a part of earth and sand adhering to the conveyor surface. Therefore, it is possible to reliably prevent a drop in the return path.

Here, in the past, in highway construction including tunnel construction, the soil was transported by a dump truck, but when transporting by a dump truck, the amount of carbon dioxide emission was large and the traffic load on surrounding roads was high. There is a problem of increasing.
On the other hand, according to the curved conveyer 1 of the present embodiment, the curved conveyer 1 that conveys the earth and sand along the road M by using the median strip S of the road M and the portion of the road M adjacent thereto is used. Since it is laid, the carbon dioxide emission can be reduced, and the increase of the traffic load on the surrounding road M can be prevented or suppressed.

  Further, according to the music transporting conveyor 1 of the present embodiment, a plurality of laying units 10 are used, and these laying units 10 are arranged so as to draw a polygon that approximates the linear shape of the transport path in plan view. Therefore, a linear shape of the transport path drawn by the transport section H including the curved section R can be constructed by the plurality of laying units 10. Therefore, as compared with the case of constructing a large number of individual support frames 71, the bending conveyor 1 can be constructed by the foundation construction for each laying unit. Therefore, the construction work can be simplified, and the subsequent removal work can be performed for each laying unit, so that the removal work can be performed easily and quickly.

  Further, according to the music transporting conveyor 1 of the present embodiment, the laying unit 10 has the wheels 12 that can run on the rails 91 laid along the linear shape in the lower part of the housing 11, so that, for example, a crane is used. This is suitable for performing the construction work and the removal work of the music transporting conveyor 1 easily and speedily, as compared with the case where the laying unit 10 is installed. In particular, it is excellent in performing the laying work in the tunnel section T and the laying work under the installation environment using a part of the road M easily and quickly.

Here, when the road M is a highway, it is necessary to provide a stop zone N for each predetermined distance, but at the position where the stop zone N is provided, there is a problem that the transfer conveyor 1 cannot be laid in the traveling lane L.
On the other hand, according to the tune transfer conveyor 1 of the present embodiment, when the road M has the stop zone N, from the part of the road M on one side sandwiching the median strip S to the other at the place where the stop zone N exists. In the portion of the road M on the side, since the bending conveyor 1 is laid across the position above the median strip S, even if the road M is a highway, a stop zone N should be provided at every predetermined distance. You can

In particular, the standard unit 20 and the connecting units 30 and 40 of the laying unit 10 have a compact structure of two upper and lower layers, so that a belt conveyor is laid in a limited space along the existing road M including the tunnel section T. The above is preferable.
As described above, according to the curving conveyor 1 and its construction method of the present embodiment, the construction can be performed by a simple foundation work, and the subsequent removal can be performed easily and quickly. The belt conveyor and the method for constructing the belt conveyor according to the present invention are not limited to the above embodiment, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

  For example, in the above embodiment, an example of transporting excavated earth and sand generated from a tunnel in highway construction including tunnel construction has been described, but the present invention is not limited to this, and a linear shape of a transport route drawn by a transport section including a curved section. As a belt conveyor in which an endless conveyor belt is stretched along a line and a construction method thereof, it can be applied to various constructions.

1 Belt Conveyor 2 Conveyor Belt 3 Header Roller 4 Footer Roller 5 Drive Roller 6 Hopper 7 Drive Unit 10 Laying Unit 11 Housing 12 Wheels 20 Standard Unit 30 Open Unit (Connecting Unit)
40 Special unit (connecting unit)
50 Straddling Unit 60 Slope Unit 70 Carrier Roller Set 71 Support Frame 72 Support Leg 73 Guide Roller 74 Conveyance Posture Adjustment Hole 80 Return Roller Set 91 Rail D Lower Floor H Conveyance Section K Conveyed Object L Traveling Lane M Road N Stopping Zone O Liberation section P Worker R Curve section S Median strip T Tunnel section U Upper floor W Work passage

Claims (6)

A belt conveyor in which an endless belt- shaped conveyor belt is stretched along a linear shape of a conveyor path drawn by a conveyor section including a curved section,
A plurality of laying units for partitioning the middle part of the transport section,
Each laying unit has a casing configured such that the longitudinal direction thereof is a conveying direction, and guides the conveying belt to the casing along the longitudinal direction in a semi-circular shape that is directed upward on the outward path. It has a semi-circular support shape that is supported by the center of the transfer path, and the center of the transfer path of the transfer belt is arranged in a straight line. A plurality of carrier roller groups that are adjustable while being allowed to move in the circumferential direction of the semi-arcuate transport belt in the bank range when the transport belt is bent. The housing has a plurality of return roller groups arranged so as to guide the conveyor belt on the return path side along the longitudinal direction thereof,
The plurality of laying units are adjacent to each other in a plan view so that a part of the outer periphery of a polygon that approximates the linear shape of the transport path is drawn by a straight line connecting the transport path centers of the plurality of carrier roller groups. A belt conveyor characterized in that it is arranged at a position where straight lines connecting the laying units with each other and connecting the centers of the conveying paths intersect with each other. Each carrier roller set includes a support leg fixed to the casing, a semi-arcuate support frame that is provided so as to adjust the position in the circumferential direction with respect to the support leg, and is directed upward, A plurality of carrier rollers arranged on the inner peripheral surface,
  The plurality of carrier rollers bend the transfer belt from below so as to allow the transfer belt to move in the circumferential direction in the semi-circular shape in the bank range when the transfer belt is bent. It is arranged so that it can be guided along the transport direction while supporting the state,
  The support frame changes the fixed position in the circumferential direction of the support frame with respect to the support leg in order to adjust the bank posture of the transfer belt during bending according to the linear shape of the transfer path. The belt conveyor according to claim 1, wherein a plurality of postures can be set while maintaining the arc supporting shape.   3. The belt conveyor according to claim 1, wherein the laying unit has wheels that can run on rails laid along the linear shape, in a lower portion of the housing. A method of constructing the belt conveyor according to any one of claims 1 to 3,
Using the plurality of laying units, the plurality of laying units, in plan view, such that a straight line connecting the transport path centers draws part of the outer periphery of a polygon that approximates the linear shape of the transport path , A method for constructing a belt conveyor, characterized by arranging at a position where a straight line connecting the centers of the conveying paths of adjacent laying units intersect with each other. A method of constructing the belt conveyor according to claim 3,
A method of constructing a belt conveyor, characterized in that the laying unit having the wheels capable of traveling is pushed forward on a rail previously laid along the linear shape of the transport path using a vehicle to be installed at a predetermined position.   Used in a belt conveyor in which endless belt-shaped conveyor belts are stretched along a linear shape of a conveyor path drawn by a conveyor section including a curved section, and the conveyor belt is a semi-circular arc directed upward on the outward side of the belt conveyor. A set of carrier rollers for guiding the shape,
  A support leg fixed to a housing configured to have its longitudinal direction as a conveyance direction, and a position that is adjustable with respect to the support leg in a circumferential direction of the semi-circular conveyance belt. A semi-arcuate support frame directed upward, and a plurality of carrier rollers arranged on the inner peripheral surface of the support frame,
  The plurality of carrier rollers bend the transfer belt from below so as to allow the transfer belt to move in the circumferential direction in the semi-circular shape in the bank range when the transfer belt is bent. Arranged in a semi-circular support shape that can be guided along the transport direction while supporting the state,
  The support frame is configured to change a fixed position in the circumferential direction of the support frame with respect to the support leg in order to adjust a bank posture when the transport belt is bent according to a linear shape of a transport path of the belt conveyor. 2. A carrier roller set for a belt conveyor, wherein a plurality of postures can be set while maintaining the semi-circular support shape.

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