JP2011137291A - Feeder device of paving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the feeder device of a paving machine reducing the amount of a paving material adhered to and remaining on flight bars without falling therefrom at a return position at the front end of a feeder. <P>SOLUTION: In this feeder device including the plurality of flight bars 25 mounted on a circulatingly moving endless conveyor chain 22 at proper intervals in the circulatingly moving direction of the conveyor chain 22, the flight bar 25 includes a bar body part 35 which comprises a horizontal plate part 35a disposed parallel to the conveyor chain 22 in the circulatingly moving direction of the conveyor chain 22 and a vertical plate part 35b disposed to project from the front end of the horizontal plate part 35a in the circulatingly moving direction outward at a generally right angle and which is formed in a generally reverse-L shape in cross section; and a tilted plate 36 attached to the rear side of the bar body part 35 in the circulatingly moving direction to diagonally extend from the projecting front end part of the vertical plate part 35b toward the rear end of the horizontal plate part 35a in the circulatingly moving direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a feeder device for a paving machine, and more particularly to a feeder device for a paving machine such as an asphalt paver equipped with a device for spreading a paving material on a construction surface to be paved.

  Conventionally, a self-propelled paving machine equipped with a charging feeder device as a feeder device and capable of laying and leveling two kinds of pavement materials on the upper and lower layers simultaneously by one paving operation on a construction surface is known. (For example, see Patent Document 1).

  The self-propelled pavement machine is equipped with a receiving hopper that receives the pavement material and a charging feeder device that conveys the pavement material in the reception hopper rearward in addition to the configuration of the original pavement machine.

  For example, as shown in FIG. 6, a conventional charging feeder device has a pair of left and right endlessly wound around a drive side sprocket wheel (not shown) and a driven side sprocket wheel so as to be integrally rotatable. The transport chain 101, 101 (only one transport chain 101 is shown in FIG. 6), and on the transport chain 101, 101, in the circumferential movement direction of the transport chain 101, 101 (the direction indicated by the arrow 102 in the figure) A plurality of flight bars 103, 103... Attached at appropriate intervals are provided.

  Then, when the pavement material 104 is inserted between the front and rear flight bars 103, 103 and the transport chains 101, 101 are moved around together with the flight bars 103, 103, the pavement material 104 is directed upward from below. Be transported. When transported to the folding position at the upper end, the flight bar 103 is reversed to the posture toward the lower side of the transport chains 101, 101. In the inversion of the flight bar 103, the flight bar 103 gradually turns downward. Further, as the flight bar 103 faces downward, the pavement material 104 thrown between the flight bars 103 and 103 gradually falls by its own weight.

  As shown in FIGS. 6 and 7, the flight bar 103 includes a horizontal plate portion 103a disposed in parallel with the transport chains 101, 101 along the circumferential movement direction of the transport chains 101, 101, and The cross section is formed in a substantially inverted L shape having a vertical plate portion 103b that is disposed to protrude outward at a substantially right angle from the front end portion in the circumferential direction of the horizontal plate portion 103a. Each flight bar 103 is attached to the left and right transport chains 101 and 101 via attachment members 103c provided at the left and right ends of the horizontal plate portion 103a.

  As described above, the charging feeder apparatus using the flight bar 103 having a substantially inverted L-shaped cross section can ensure the transport efficiency of the entire apparatus and the strength of the flight bar.

Japanese Patent No. 2994617.

  As described above, in the conventional charging feeder apparatus using the flight bar 103 having the horizontal plate portion 103a and the vertical plate portion 103b and having a cross-section formed in a substantially inverted L shape, When reversed from the folded position to the downward direction, the front side of the vertical plate portion 103b faces directly downward and at the same time, a large amount of the pavement material falls vigorously toward the drop opening. 104 can be peeled off relatively well from the front side of the vertical plate portion 103b and dropped.

  However, on the back side of the vertical plate portion 103b, after a large amount of the pavement material 104 has already dropped, a small amount of the pavement material 104 remaining there gradually falls. In addition, since intersecting corner portions are provided between the horizontal plate portion 103a and the vertical plate portion 103b, for example, as shown in FIG. There is a problem in that the portion 104a remains attached, and a part 104a of the attached pavement material 104 is brought back to the pavement input portion.

  That is, if a portion 104a of the pavement material 104 adheres to the flight bar 103 without dropping, the remaining portion 104a of the pavement material 104 is solidified and accumulates on the flight bar 103, thereby improving the conveyance efficiency of the pavement material. Reduce. Moreover, the weight of the part 104a of the remaining pavement 104 becomes a heavy load with respect to the feeder apparatus, and the operation efficiency of the whole apparatus is reduced. For this reason, although the work which peels off the pavement material accumulated on the flight bar is required, this periodic work has a problem of lowering work efficiency.

  Therefore, there is a technical problem to be solved in order to reduce the amount of pavement material that adheres and remains without falling from the flight bar at the folding position at the front end of the feeder, and the present invention solves this problem. The purpose is to do.

  The present invention has been proposed in order to achieve the above-mentioned object, and the invention according to claim 1 is directed to an endless transport chain that is circulated and on the transport chain in a direction in which the transport chain is circulated. A feeder device for a paving machine, which includes a plurality of flight bars attached at appropriate intervals, and injects paving material between the front and rear flight bars and transfers from one to the other. A horizontal portion formed in parallel with the transport chain along the circumferential movement direction of the transport chain, and a vertical portion formed to protrude outward at a substantially right angle from a front end portion in the circumferential movement direction of the horizontal portion, and The inclined portion formed on the rear side in the circumferential movement direction of the flight bar is inclined so as to descend from the protruding front end side of the vertical portion toward the rear end portion in the circumferential movement direction of the horizontal portion. Providing feeder device paver is the flight bar formed.

  According to this configuration, when the flight bar is reversed from the folded position at the rear end portion in the circumferential movement direction to the downward direction, the surface of the inclined portion formed on the back side in the circumferential movement direction of the flight bar is paved. It becomes a sliding surface that slides the material off the flight bar, sliding the pavement material and reducing the amount of pavement material that remains attached to the flight bar.

  The invention of claim 2 comprises an endless transport chain that is moved around, and a plurality of flight bars that are mounted on the transport chain at appropriate intervals in the direction of movement of the transport chain, In a feeder device for a paving machine, in which a pavement material is introduced between the front and rear flight bars and transferred from below to above, the flight bars are parallel to the transport chain along the circumferential movement direction of the transport chain. A bar formed in a substantially inverted L-shaped cross section having a horizontal plate portion disposed and a vertical plate portion projecting outward at a substantially right angle from the front end portion in the circumferential movement direction of the horizontal plate portion. A main body, and an inclined plate attached to the back side of the bar main body in the circumferential movement direction, tilted so as to descend from the protruding front end side of the vertical plate section toward the rear end in the circumferential movement direction of the horizontal plate section; Pavement with Providing feeder device 械.

  According to this configuration, when the flight bar is reversed from the folding position of the rear front end portion in the circumferential movement direction to the downward direction, the inclined plate attached to the back surface of the bar main body portion causes the pavement material to slide down from the flight bar. It becomes a sliding surface, and the inclined plate slides the pavement material, reducing the amount of pavement material remaining on the flight bar.

  According to a third aspect of the present invention, there is provided a feeder for a paving machine, wherein the inclined portion or the inclined plate of the flight bar is formed of a stainless steel material in the configuration of the first or second aspect.

  According to this configuration, since the surface of the stainless steel material is smooth and the pavement material is difficult to adhere, the sliding effect by the inclined portion or the inclined plate on the pavement material is increased, and the amount of the pavement material remaining on the flight bar is reduced. Further reduce.

  The invention according to claim 1 can reduce the amount of the pavement material remaining on the flight bar and bringing it back to the pavement input portion. As a result, the load on the feeder device is reduced, and at the same time, the operation efficiency of the entire device is improved, contributing to energy saving. Moreover, the conveyance efficiency of a pavement material also improves by reducing the quantity of the pavement material brought home to a pavement material input part. Furthermore, the number of operations for periodically peeling the pavement material accumulated on the flight bar is reduced, and improvement in workability can be expected.

  The invention according to claim 2 can reduce the amount of the pavement material remaining on the flight bar and bringing it back to the pavement input portion. As a result, the load on the feeder device is reduced, and at the same time, the operation efficiency of the entire device is improved, contributing to energy saving. Moreover, since the amount of paving material to be taken back to the paving material input part can be reduced, the conveyance efficiency of the paving material is also improved. Furthermore, the number of operations for periodically peeling the pavement material accumulated on the flight bar is reduced, and improvement in workability can be expected.

  In the invention according to claim 3, since the inclined portion or the inclined plate of the flight bar is formed of a stainless steel material, the amount of the pavement material remaining on the flight bar can be further reduced. Alternatively, in addition to the effects of the invention described in 2, it is possible to expect further improvement in operation efficiency and energy saving, improvement in conveyance efficiency, and improvement in workability.

The one part notched side view of the multi-asphalt paver provided with the charging feeder which shows one Example of this invention. The top view which shows the various hoppers, screw conveyor, etc. which were mounted in the multi-asphalt paver of FIG. The enlarged side view which shows the rear part structure in a charging feeder same as the above with a flight bar. The enlarged view which shows the pavement material conveyance state by a charging feeder same as the above schematically. The expansion perspective view of the flight bar single-piece | unit currently used with the charging feeder same as the above. The schematic expanded sectional view which shows the paving material conveyance state in the conventional charging feeder. The expansion perspective view which shows the flight bar single-piece | unit currently used with the charging feeder of FIG.

  The present invention comprises an endless transport chain that is revolved and a plurality of flight bars that are mounted on the transport chain at appropriate intervals in the direction of revolving movement of the transport chain. In the feeder device of the paving machine, in which the pavement material is introduced between the bars and transferred from one side to the other, the flight bar is formed in parallel with the conveyance chain along the circumferential movement direction of the conveyance chain. And a vertical portion that protrudes outward at a substantially right angle from the front end portion in the circumferential movement direction of the horizontal portion, and from the protruding front end side of the vertical portion to the rear end portion in the circumferential movement direction of the horizontal portion This is realized by a flight bar that is inclined so as to form a substantially triangular prism shape with an inclined portion formed on the back side in the circumferential movement direction of the flight bar.

  Hereinafter, a preferred embodiment of a feeder device for a paving machine according to the present invention will be described with reference to the accompanying drawings shown in FIGS. 1 and 2 show a multi-asphalt paver to which the feeder apparatus of the present invention is applied, FIG. 1 is a partially cutaway side view thereof, and FIG. 2 shows various hoppers and screw conveyors mounted on the multi-asphalt paver. FIG. In the following description, the left side in FIG. 1 is the front side in the front-rear direction of the multi-asphalt paver (or the front and rear in the circumferential movement direction of the transport chain), and the rear side is the rear side (or the front in the circumferential movement direction of the transport chain). In the following description, the vertical direction is the top and bottom of the multi-asphalt paver, and the direction perpendicular to the paper surface is the left and right of the multi-asphalt paver.

  1 and 2, a multi-asphalt paver 10 shown as a paving machine of the present embodiment simultaneously has two types of upper and lower pavement materials H1 and upper pavement material H2 (asphalt mixture) simultaneously in a single pavement operation. Each hopper and a leveling device for accommodating the lower layer pavement material H1 and the upper layer pavement material H2 are provided.

  As shown in the figure, an engine 13 is mounted on the front portion of a vehicle body 12 that is self-propelled by a crawler 11, and a front hopper 15 is provided on the front side (left side in the figure) of the engine 13. A rear hopper 16 is provided behind the front hopper 15 in the vehicle body 12, and the rear hopper 16 is disposed at a position higher than the front hopper 15 by a predetermined dimension.

  A receiving hopper 17 is provided in front of the front hopper 15 of the vehicle body 12, and a lower pavement material H1 or an upper pavement material H2 is input into the receiving hopper 17 by a dump truck or the like. Further, a charging feeder 18 is disposed behind the receiving hopper 17, and a front portion of the charging feeder 18 is connected to a lower portion of the receiving hopper 17. The charging feeder 18 is installed so as to incline upward at a predetermined angle from the front end portion toward the rear end portion.

  An intermediate lower portion of the charging feeder 18 is supported by the vehicle body 12 by a pivot pin 19 and is provided so as to be able to be tilted up and down around the pivot pin 19 as a rotation center. The connecting portion of the pivot pin 19 is provided to be exposed to the outside of the house cover 20 disposed above the engine 13. Thus, the charging feeder 18 can be easily detached from the vehicle body 12 by pulling out and inserting the pivot pin 19 outside the house cover 20.

  In the cover 21 of the charging feeder 18, endless transport chains (charging chains) 22 and 22 that function as flight conveyors are provided on both the left and right sides. The transport chains 22 and 22 are wound around the outer sides of the driven-side lower sprocket wheel 23 and the driving-side upper sprocket wheel 24, respectively.

  The left and right transport chains 22, 22 have a large number of flight bars 25, 25, straddling the left and right transport chains 22, 22 and projecting outward from the transport chains 22, 22 in the vertical direction. Are attached at appropriate intervals. As a result, when the upper sprocket wheel 24 is driven to rotate by the drive motor 14, the transport chains 22, 22 circulate together with the flight bars 25, 25. During this orbital movement, the lower layer pavement material H1 or the upper layer pavement material H2 in the receiving hopper 17 is placed between the front and rear flight bars 25 and 25 and transferred upward along the charging feeder 18.

  A first drop port 26 is formed in a lower surface portion (lower plate portion) in the vicinity of the central portion in the front-rear direction of the charging feeder 18, and the first drop port 26 is disposed at an upper position corresponding to the front hopper 15. ing. Further, a second drop port 27 is formed in the lower surface portion near the rear upper end portion of the charging feeder 18, and the second drop port 27 is disposed at an upper portion corresponding to the rear hopper 16.

  Thus, if the upper pavement material H2 is introduced into the receiving hopper 17 and the conveying chain 22 is moved around in a state where the first dropping port 26 is closed and the second dropping port 27 is opened, the receiving hopper 17 The upper pavement material H2 placed between the front and rear flight bars 25, 25 is transferred to the second drop port 27 on the upper end side of the charging feeder 18 and discharged downward from the second drop port 27 to the rear side. It is accommodated in the hopper 16.

  On the other hand, when the second drop port 27 is closed and the first drop port 26 is opened, the lower pavement material H1 is introduced into the receiving hopper 17 and the conveying chain 22 is moved around. The lower layer pavement material H1 placed between the front and rear flight bars 25, 25 in 17 is transferred to the first drop port 26 in the middle of the charging feeder 18 and discharged downward from the first drop port 26 to the front side. It is accommodated in the hopper 15.

  A first screw conveyor 29a and a second screw conveyor 29b are provided below the vehicle body 12. The first screw conveyor 29a and the second screw conveyor 29b are disposed at locations corresponding to the front hopper 15 and the rear hopper 16, respectively.

  Further, a leveling means for the lower layer paving material is disposed on the rear end side of the first screw conveyor 29a. The spread leveling means includes a front screw spreader 30 that diffuses the lower layer pavement material H1 on the construction surface, and a front screed 31 that spreads the diffused lower layer pavement material H1 on the work surface.

  Accordingly, the lower pavement material H1 accommodated in the front hopper 15 is conveyed to the front screw spreader 30 by the rotational drive of the first screw conveyor 29a, diffused on the construction surface of the road, and laid by the front screed 31. Leveled.

  On the other hand, a leveling means for the upper pavement material is disposed on the rear end side of the second screw conveyor 29b, and the leveling means diffuses the upper pavement material H2 to the construction surface. And a rear screed 33 that spreads and spreads the diffused upper pavement material H2 on the construction surface.

  Accordingly, the upper pavement material H2 accommodated in the rear hopper 16 is conveyed to the rear screw spreader 32 by the rotational drive of the second screw conveyor 29b, diffuses to the construction surface of the road, and the rear screed. 33 is laid on the construction surface and leveled.

  3 is an enlarged view showing the rear configuration of the charging feeder 18 together with the flight bars 25, 25..., FIG. 4 is an enlarged view schematically showing a pavement conveying state in the charging feeder 18, and FIG. It is an expansion perspective view which shows the flight bar 25 currently used with the charging feeder 18 alone.

  3 to 5, the flight bars 25, 25... Are constituted by a bar main body portion 35, an inclined plate 36 and the like. The bar main body 35 is disposed substantially parallel to the transport chain 22 along the circumferential movement direction of the transport chain 22 and from the front end of the horizontal plate section 35a in the circumferential movement direction. Are integrally formed with a vertical plate portion 35b disposed so as to protrude in the shape of a substantially inverted L-shaped member.

  On the other hand, the inclined plate 36 is made of a stainless steel material, and as shown in FIGS. 5 and 6, on the back side of the bar main body 35, the horizontal plate 35 a It is attached to the bar main body portion 35 so as to be inclined toward the rear end portion in the circumferential movement direction.

  In this embodiment, the inclination angle of the inclined plate 36 is approximately 135 ° around the flight surface of the charging feeder 18 where the flight bars 25, 25... It is attached to the bar main body 35 in a state inclined forward. The inclination angle of the inclined plate 36 is not necessarily limited to 130 °, and is set to an appropriate angle within a range that forms an obtuse angle with respect to the transport surface.

  The flight bars 25, 25... Thus formed are attached to the left and right transport chains 22, 22 via attachment members 35c provided at the left and right ends of the horizontal plate portion 35a. It is done.

  Next, the operation of the charging feeder 18 using the flight bars 25, 25... Will be described with reference to FIG. When the transport chain 22 is moved in the direction of the arrow 37 in the figure, the flight bar 25 is transported toward the folded position at the upper rear end while transporting the upper pavement material H2. When the turn-up position at the upper rear end is reached, the flight bar 25 is reversed to the posture toward the lower side, and the flight bar 25 gradually falls. When the flight bar 25 is laid down, the front side of the vertical plate portion 35b and the inclined plate 36 face downward. Accordingly, the upper pavement material H2 placed between the inclined plate 36 of the upstream flight bar 25 and the front surface of the vertical plate portion 35b of the downstream flight bar 25 falls while sliding on the inclined plate 36 with its own weight. . In addition, since the slope plate 36 uses a stainless steel material on which the pavement is easy to slip, there is almost no upper layer pavement H2 remaining on the flight bar 25 in this fall, and almost all of the pavement is dropped, and the pavement input portion The upper pavement material H2 to be taken back to the (receiving hopper 17) can be eliminated.

  Therefore, in the charging feeder 18 according to the present embodiment, the upper pavement material H2 that is brought back to the receiving hopper 17 can be eliminated, so that the load on the charging feeder 18 can be reduced. Thereby, the operation efficiency of the whole apparatus can be improved and energy saving can be achieved. Further, by eliminating the pavement material to be taken back to the receiving hopper 17, the amount of pavement material newly introduced in the receiving hopper 17 is increased, and the conveyance efficiency of the pavement material is improved. Furthermore, the number of operations for periodically peeling the pavement material accumulated on the flight bar is reduced, and improvement in workability can be expected.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

  For example, although the feeder apparatus applied to the multi-asphalt paver is shown in the above-described embodiment, the present invention is not limited to this, and can be applied to, for example, a bar conveyor of an asphalt finisher. In the case of this bar conveyor, the feeder device is installed horizontally. In the above embodiment, the flight bar 25 has a structure in which the bar main body portion 35a and the inclined plate 36 are separated. However, the bar main body portion 35a and the inclined plate 36 are integrated into a substantially triangular prism shape. May be.

  As described above, the present invention has been described with respect to a structure applied to a multi-asphalt paver. However, the present invention can be applied to a feeder device other than a multi-asphalt paver, for example, an asphalt finisher.

10 Multi-asphalt paver (paving machine)
15 Front hopper 16 Rear hopper 17 Receiving hopper (paving material input section)
18 Charging Feeder 22 Conveying Chain 23 Lower Sprocket Wheel 24 Upper Sprocket Wheel 25 Flight Bar 26 First Drop Port 27 Second Drop Port 29a First Screw Conveyor 29b Second Screw Conveyor 30 Front Screw Spreader 31 Front Screed 32 Rear Screw Spreader 33 Rear screed 35 Bar body portion 35a Horizontal flat plate portion 35b Vertical plate portion 36 Inclined plate H1 Lower layer pavement material H2 Upper layer pavement material

Claims (3)

  An endless transport chain that is circulated, and a plurality of flight bars that are mounted on the transport chain at appropriate intervals in the circumferential movement direction of the transport chain, between the front and rear flight bars. In the feeder device of the paving machine that inputs the pavement material and transfers it from one side to the other, the flight bar includes a horizontal portion formed in parallel with the transport chain along the circumferential movement direction of the transport chain, and the horizontal A vertical portion that protrudes outward from the front end portion in the circumferential movement direction of the portion at a substantially right angle, and descends from the protruding tip end side of the vertical portion toward the rear end portion in the circumferential movement direction of the horizontal portion. A feeder device for a paving machine, characterized in that the flight bar forms a substantially triangular prism shape with an inclined portion formed on the back side in the circumferential movement direction of the flight bar. An endless transport chain that is circulated, and a plurality of flight bars that are mounted on the transport chain at appropriate intervals in the circumferential movement direction of the transport chain, between the front and rear flight bars. In the feeder device of a paving machine that inputs pavement material and transfers it from below to above,
The flight bar is disposed so as to protrude outward at a substantially right angle from a horizontal plate portion disposed in parallel with the conveyance chain along the circumferential movement direction of the conveyance chain and a front end portion in the circumferential movement direction of the horizontal plate portion. The bar main body portion having a vertical plate portion having a substantially inverted L-shaped cross section, and descending from the protruding front end side of the vertical plate portion toward the rear end portion in the circumferential movement direction of the horizontal plate portion. And a sloping plate attached to the back side of the bar main body in the circumferential movement direction.   The feeder device for a paving machine according to claim 1 or 2, wherein the inclined portion or the inclined plate of the flight bar is formed of a stainless steel material.

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