JP2012207404A - Paving material feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paving material feeder capable of feeding a paving material in a scattered manner in a width direction of a paving location while reducing wear of a belt.SOLUTION: A paving material feeder 1 comprises: a bridging member 2 which is put up in a width direction of a paving location P; a first belt conveyor 3 which is supported movably along the bridging member 2; a movement mechanism 4 which moves the first belt conveyor 3 along the bridging member 2; and a second belt conveyor 5 which takes in the paving material FC from the side of one end and which feeds the paving material FC to the first belt conveyor 3 from the side of the other end. The first belt conveyor 3 is moved along the bridging member 2 to feed the paving material FC in a scattered manner in the width direction of the paving location P.

Description

  The present invention relates to a pavement material supply device that supplies a pavement material to a pavement location.

  Conventionally, in pavement work such as a slip form method, a pavement material supply device for dispersing and supplying a pavement material to a pavement location has been used.

  For example, in Patent Document 1, a belt conveyor is horizontally disposed from one end to the other end in the width direction of a pavement, and the pavement material on the belt is reciprocated in the running direction of the belt of the belt conveyor and vice versa. There is disclosed a pavement material supply device provided with a scraper that scrapes off in the width direction of a pavement portion sequentially.

JP 2006-144240 A

  However, since the pavement material supply device described in Patent Document 1 has a structure in which the pavement material on the belt is scraped off by the scraper, the belt and the scraper rub against each other and wear the belt, and the belt replacement and maintenance are complicated. There was a problem of becoming.

  This invention is made | formed in view of these situations, and makes it a subject to provide the pavement material supply apparatus which can be distributed in the width direction of a pavement location and can supply a pavement material, reducing abrasion of a belt. .

  The present invention is a pavement material supply device that transports and supplies a pavement material to a pavement location, and is supported so as to be movable along the bridging member spanned in the width direction of the pavement location. A first belt conveyor, a moving mechanism for moving the first belt conveyor along the bridging member, a first conveyor that takes in the paving material from one end side, and supplies the paving material to the first belt conveyor from the other end side. 2 belt conveyors, wherein the first belt conveyor moves along the bridging member to distribute the pavement material in the width direction of the pavement portion.

  According to such a configuration, since the first belt conveyor is supported so as to be movable along the bridging member spanned in the width direction of the pavement location, by moving the first belt conveyor along the bridging member, The position of the end portion of the first belt conveyor (that is, the supply position of the pavement material) can be changed in the width direction of the pavement location. Accordingly, the paving material can be distributed and supplied in the width direction of the paved portion without causing friction to the belt.

  Moreover, it is preferable that the second belt conveyor has an extending portion that extends to the outside of the paved portion on one end side and a bending mechanism that bends the extending portion in the vertical direction.

  According to this configuration, for example, even when the extending portion extends on the traveling path of the agitator vehicle, the extending portion can be bent by the folding mechanism so that the traveling path can pass. Therefore, even in a narrow construction site where there is only one lane, the agitator vehicle can be easily replaced, and the working efficiency is improved.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the pavement material supply apparatus which can disperse | distribute in the width direction of a pavement location and can supply a pavement material, reducing abrasion of a belt.

It is construction layout of the slip form method using the pavement material supply device concerning this embodiment. It is a front view of the pavement material supply apparatus which concerns on this embodiment. It is a top view of the pavement material supply apparatus which concerns on this embodiment. It is a side view of the pavement material supply device concerning this embodiment. It is an enlarged front view near the first belt conveyor and the moving mechanism. It is an enlarged front view of a 2nd belt conveyor. It is explanatory drawing for demonstrating operation | movement of a pavement material supply apparatus.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. In this embodiment, a case where the present invention is applied to a slip form method for a concrete paved road will be described as an example. In addition, when showing a direction in description, it demonstrates on the basis of front and rear, right and left shown in FIG. In the description, “left-right direction” is synonymous with “width direction of the pavement”.

As shown in Fig. 1, the slip-form method is to attach a steel formwork to a slip-form paver SP, which is a molding machine, and to cast ready-mixed concrete FC, which is a paving material, into the steel formwork, and then level the floor. -It is a construction method in which the structure of the same cross-section is continuously constructed by simultaneously compacting and molding and advancing the slip foam paver SP.
In this embodiment, the iron net S is previously installed on the pavement place P via a spacer, and then the pavement material supply device 1 is used to provide a half of the total amount on the pavement place P on which the iron net S is installed. Next, the remaining ready-mixed concrete FC is supplied to the left side of the pavement material supply device 1 immediately before the slip-form paver SP, and is fed by the slip-form paver SP. We perform leveling, compaction, surface molding, etc.
In addition, on the left side of the pavement place P, a travel path R for the agitator vehicle M to travel is provided.

As shown in FIGS. 2 to 4, the pavement material supply apparatus 1 according to the present embodiment receives the ready-mixed concrete FC from the agitator car M, and transports and supplies it to the pavement place P provided on the ground G. It is.
The pavement material supply device 1 mainly includes a bridging member 2, a first belt conveyor 3, a moving mechanism 4, and a second belt conveyor 5.

  The bridging member 2 is a member spanned in the width direction of the pavement location P at a position spaced upward from the pavement location P. The bridging member 2 includes two bridge girders 21 and 21 that are spaced apart from each other in the longitudinal direction of the pavement location P. Each bridge girder 21, 21 is made of, for example, I-shaped steel, and leg portions 22, 22 for supporting each bridge girder 21, 21 are attached to both ends thereof. The leg portions 22 and 22 have an expansion / contraction device 22a for adjusting the height of the bridge girders 21 and 21, respectively. The telescopic device 22a is composed of, for example, a hydraulic cylinder. A traveling device 23 for moving the pavement material supply device 1 along the longitudinal direction of the pavement portion P is provided at the lower ends of the leg portions 22 and 22. The traveling device 23 is composed of, for example, a crawler device. Further, both ends of the bridge girders 21 and 21 are connected by connecting girders 24 and 24.

As shown in FIG. 2 to FIG. 5 (mainly FIG. 5), the first belt conveyor 3 is an apparatus for supplying a paving material dispersed in the width direction of the paving location P, along the bridging member 2. It is supported movably.
The first belt conveyor 3 includes a pair of body plates 31, 31, a pair of rollers 32, 32 rotatably held between the body plates 31, 31, and a belt wound around the pair of rollers 32, 32. 33, a drive device 34 for rotationally driving the belt 33, and a suspension device 35 that suspends and supports the first belt conveyor 3 with respect to the bridging member 2.

  The drive device 34 is composed of, for example, a hydraulic motor, can adjust the rotation speed, and can rotate in both forward and reverse directions. The driving device 34 transmits driving force to a sprocket 32a provided at the end of one roller 32 via a chain 34a. By driving the drive device 34 to rotate, the belt 33 rotates as the one roller 32 rotates, and the ready-mixed concrete FC on the belt 33 is supplied to the pavement P.

  The suspension device 35 has an arm member 35a fixed to the outer surface of each main body plate 31, and a pulley 35b provided at the upper end of the arm member 35a. The pulley 35b is locked to a rail member 21b projecting from the inside of each bridge girder 21 and 21, and can move along the rail member 21b.

As shown in FIGS. 2 to 5 (mainly FIG. 5), the moving mechanism 4 is a device for moving the first belt conveyor 3 along the rail member 21b.
The moving mechanism 4 includes a pair of plates 41, 41, a drive device 42, a drive sprocket 43, two guide sprockets 44, 44, and a chain 45.

  The pair of plates 41 and 41 are fixed to the other end sides of the main body plates 31 and 31 of the first belt conveyor 3, respectively.

  The drive device 42 is composed of, for example, a hydraulic motor, and is fixed inside one plate 41 (the front plate 41 in the present embodiment).

  The drive sprocket 43 is a sprocket that is rotationally driven by the drive device 42. The drive sprocket 43 has a shaft 43a spanned near the center of the pair of plates 41 and 41, and sprockets 43b and 43b attached to both ends of the shaft 43a. The shaft 43a is connected to the output shaft of the drive device 42 via a gear (not shown). The sprockets 43b and 43b are disposed outside the pair of plates 41 and 41, respectively.

  The guide sprocket 44 is a sprocket for guiding the chain 45 to the drive sprocket 43, and two guide sprockets 44 are arranged above the drive sprocket 43 with a space between each other. The guide sprocket 44 has a shaft 44a spanning the vicinity of the upper ends of the pair of plates 41 and 41, and sprockets 44b and 44b attached to both ends of the shaft 44a. The sprockets 44b and 44b are disposed outside the pair of plates 41 and 41, respectively.

  The chain 45 is a member that converts the rotational force of the drive sprocket 43 into the propulsive force of the first belt conveyor 3. The chain 45 is stretched between the connecting beams 24 and 24 of the bridging member 2 in parallel with the bridge beam 21, and is wound around the drive sprocket 43 and the guide sprockets 44 and 44. The chain 45 meshes with the drive sprocket 43, and by rotating the drive sprocket 43, the first belt conveyor 3 suspended and supported by the bridge girder 21 can be moved in the width direction of the pavement place P. it can.

  As shown in FIGS. 2 to 4 and 6, the second belt conveyor 5 is a device that transports the ready-mixed concrete FC from the agitator vehicle M to the first belt conveyor 3. One end side (the right side in FIG. 2) of the second belt conveyor 5 constitutes an extending portion 5 a that extends on the traveling path R that is outside the pavement location P. The other end side (the left side in FIG. 2) of the second belt conveyor 5 constitutes a horizontal portion 5 b that is supported substantially horizontally between the bridge beams 21 and 21 of the bridging member 2. The right end portion of the horizontal portion 5 b is located above the first belt conveyor 3.

  The second belt conveyor 5 includes a pair of main body plates 51, a plurality of rollers 52 sandwiched between the main body plates 51, a belt 53 wound around the plurality of rollers 52, and a drive for rotationally driving the belt 53. It has the apparatus 54, the bending mechanism 55 which bends the extension part 5a of the 2nd belt conveyor 5, and the hopper 56 which receives ready-mixed concrete FC.

  The pair of main body plates 51 are members for sandwiching the rollers 52. The main body plate 51 is composed of two members: an extension part plate 51a constituting the extension part 5a and a horizontal part plate 51b constituting the horizontal part 5b. The other end side of the extension part plate 51 a is connected to one end side of the horizontal part plate 51 b via a bending mechanism 55.

  The roller 52 is a cylindrical member for guiding the belt 53, and is disposed at a predetermined position corresponding to the bent position of the belt 53.

  The drive device 54 is composed of, for example, a hydraulic motor, and is rotatable in both forward and reverse directions. The driving device 54 transmits driving force to the sprocket 52a provided at the end of the roller 52 disposed on the other end side via the chain 54a. By driving the drive device 54 to rotate, the belt 53 rotates as the roller 52 on the other end side rotates, and the ready-mixed concrete FC on the belt 53 is conveyed to the first belt conveyor 3.

  As shown in FIGS. 6A and 6B, the bending mechanism 55 is a device that bends the extending portion 5a in the vertical direction. The bending mechanism 55 includes a first reinforcing plate 55a that reinforces the vicinity of the right end portion of the extending portion plate 51a, a second reinforcing plate 55b that reinforces the vicinity of the left end portion of the horizontal portion plate 51b, and the right end of the first reinforcing plate 55a. A hinge portion 55c that rotatably connects the first reinforcing plate 55b and the left end portion of the second reinforcing plate 55b, and an expansion / contraction device 55d provided between the first reinforcing plate 55a and the second reinforcing plate 55b.

  The expansion / contraction device 55d is composed of, for example, a hydraulic cylinder. In the telescopic device 55d, the tip end of the cylinder rod is fixed to the upper end of the first reinforcing plate 55a, and the base end of the hydraulic cylinder is fixed to the upper end of the second reinforcing plate 55b. As shown in FIG. 6B, when the expansion / contraction device 55d is retracted, the extending portion 5a is bent into a standing state.

  The hopper 56 is a member that receives the ready-mixed concrete FC dropped from the agitator wheel M, and is installed at the left end of the extending portion 5a as shown in FIG. The hopper 56 is formed in a funnel shape that becomes narrower as it goes downward. A belt 53 is disposed below the hopper 56, and the ready-mixed concrete FC dropped on the hopper 56 is placed on the belt 53.

The pavement material supply apparatus 1 according to the present embodiment is basically configured as described above. Next, with reference to FIGS. 1 to 7 (mainly FIG. 7), the pavement material supply apparatus 1 according to the present embodiment. The operation of the pavement material supply device 1 and the construction procedure of the slip form method will be described.
FIG. 7 is an explanatory diagram for explaining the operation of the pavement material supply apparatus. In FIG. 7, for convenience of explanation, the configuration other than the belt 33 of the first belt conveyor 3 and the belt 53 of the second belt conveyor 5 is omitted.

  First, as shown in FIG. 1, the iron net S is installed on the pavement location P via a spacer (not shown). Note that the iron net S is a member in which reinforcing bars are combined in a lattice shape.

  Next, using the pavement material supply device 1, the ready-mixed concrete FC is roughened by dispersing in the width direction of the pavement location P where the iron net S is laid. In addition, it is preferable that the amount of ready-mixed concrete FC to be roughened is such that the iron net S is just hidden.

  Specifically, first, as shown in FIG. 7A, the first belt conveyor 3 is moved along the bridging member 2 and arranged on the right side of the pavement place P. And the green concrete FC supplied to the 2nd belt conveyor 5 is conveyed to the 1st belt conveyor 3 by rotating the belt 53 of the 2nd belt conveyor 5 counterclockwise. Next, the belt 33 of the first belt conveyor 3 is driven to rotate counterclockwise, and the ready-mixed concrete FC is supplied to the right side in the width direction of the pavement portion P.

  Next, as shown in FIG. 7B, by driving the moving mechanism 4 (see FIG. 5), the first belt conveyor 3 is moved leftward, and the right end of the first belt conveyor 3 is moved. Is placed on the edge of the ready-mixed concrete FC dropped earlier. Then, the ready-mixed concrete FC is dropped through the second belt conveyor 5 and the first belt conveyer 3 at a position adjacent to the ready-mixed concrete FC previously dropped.

  Next, as shown in FIG.7 (c), when supplying ready concrete FC below the 2nd belt conveyor 5, the 1st belt conveyor 3 is moved to the right side, and the left end part of the 1st belt conveyor 3 is moved. Arranged below the second belt conveyor 5. Then, the ready-mixed concrete FC is dropped below the second belt conveyor 5 by rotating the belt 33 of the first belt conveyor 3 clockwise.

Next, as shown in FIG.7 (d), when supplying ready concrete FC near the left end part of the pavement location P, the 1st belt conveyor 3 is moved further to the left, and the left end of the 1st belt conveyor 3 is shown. The part is arranged near the left end part of the pavement place P. At this time, the right end portion of the first belt conveyor 3 is located below the right end portion of the second belt conveyor 5, and can receive supply of ready-mixed concrete FC from the second belt conveyor 5. ing. And the ready-mixed concrete FC is dropped near the left end part of the pavement P by rotating the belt 33 of the first belt conveyor 3 clockwise.
By the operation of the pavement material supply apparatus 1 as described above, the ready-mixed concrete FC that is the pavement material is supplied in a distributed manner in the width direction of the pavement portion P.

  The pavement material supply device 1 drives the traveling device 23 to roughen the ready-mixed concrete FC while moving forward. Thereby, the rough concrete FC is roughened not only in the width direction of the pavement portion P but also in the front direction.

  As shown in FIG. 1, a slip foam paver SP for leveling, compacting, and molding the raw concrete FC is disposed behind the pavement material supply device 1. Immediately before the slip foam paver SP, the remaining ready-mixed concrete FC necessary for paving is supplied from another agitator vehicle M.

  The slip foam paver SP spreads the ready-mixed concrete FC to a predetermined construction width using a mounted screw auger (not shown) while moving forward. At this time, the slip-form paver SP pushes the ready-mixed concrete FC forward, but the ready-made concrete FC is roughened to the extent that the checkered material supply device 1 fills the checkered steel S. Can be suppressed.

  The slip foam paver SP compacts the spread concrete concrete FC with a vibrator, and molds it to a predetermined width and height by a mold and a screed. Thereby, a paving body will be formed continuously.

  When exchanging (replacement) the agitator vehicle M that supplies the ready-mixed concrete FC just before the slip foam paver SP, the folding mechanism 55 of the pavement material supply device 1 is operated as shown in FIG. Thus, the extending portion 5a of the second belt conveyor 5 is brought into an upright state. As a result, the travel path R is opened, and the agitator vehicle M can pass.

  According to the pavement material supply apparatus 1 according to the present embodiment, the first belt conveyor 3 is supported so as to be movable along the bridging member 2 spanned in the width direction of the pavement portion P. Therefore, the first belt conveyor By moving 3 along the bridging member 2, the position of the end portion of the first belt conveyor 3 (that is, the supply position of the pavement material) can be changed in the width direction of the pavement place P. Thereby, since a scraper becomes unnecessary, it is possible to distribute and supply the pavement material in the width direction of the pavement portion P while suppressing the wear of the belts 33 and 53 and improving the maintainability.

  Moreover, according to the pavement material supply apparatus 1 according to the present embodiment, the extending portion 5a of the second belt conveyor 5 is configured to be bendable by the bending mechanism 55. The agitator vehicle M can be allowed to travel by bending the protruding portion 5a.

  Moreover, according to the pavement material supply apparatus 1 according to the present embodiment, the first belt conveyor 3 is supported by being suspended from the bridging member 2 (more specifically, the bridge girder 21), and is movable along the bridging member 2. Since it is configured, by changing the length of the bridge girder 21 according to the width of the pavement place P (changing the bridge girder 21), the pavement places P of various widths without changing the first belt conveyor 3 itself. It can correspond to.

  As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of invention, it can change suitably.

  For example, in this embodiment, the pavement material supply device 1 is used for the slip form method of concrete pavement. However, the present invention is not limited to this, and the pavement material supply device 1 may be used for supplying asphalt mixture in normal asphalt pavement. Good.

  Moreover, in this embodiment, in the slip form method, the iron net S was previously laid on the pavement place P, but the present invention is not limited to this, and the first concrete layer is applied. A steel net S may be installed, and the second layer of ready-mixed concrete FC may be supplied thereon using the pavement material supply device 1, and may be spread and compacted with a slip-form paver SP.

DESCRIPTION OF SYMBOLS 1 Pavement material supply apparatus 2 Bridging member 3 1st belt conveyor 35 Suspension apparatus 4 Movement mechanism 5 2nd belt conveyor 5a Extension part 55 Bending mechanism FC Ready-mixed concrete P Pavement location S Steel net

Claims (2)

A pavement material supply device that transports and supplies pavement material to a pavement location,
A bridging member spanned in the width direction of the pavement location;
A first belt conveyor supported movably along the bridging member;
A moving mechanism for moving the first belt conveyor along the bridging member;
A second belt conveyor that takes in the pavement material from one end side and supplies the pavement material from the other end side to the first belt conveyor;
The first belt conveyor moves along the bridging member to distribute the pavement material in the width direction of the pavement portion and supply the pavement material.   The said 2nd belt conveyor has the bending mechanism which bends the said extension part to an up-down direction while having the extension part extended to the exterior of the said pavement location at one end side. Paving material supply equipment.

Images