JP2007303189A - Retaining plate device of road paving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the preparation of paving work, and to easily almost uniformalize the amount of asphalt mixture in front of a screed throughout the width of the screed, which is adjusted depending on the width of a road to be paved. <P>SOLUTION: A retaining plate 6, which regulates the scattering of the asphalt mixture, spread by a screw 4, to the front side of a machine body 1, comprises a fixed retaining plate 6c which is fixed to the machine body 1, and a pair of expansion retaining plates 6b and 6a which can be freely expanded/contracted on the right and left sides of the fixed retaining plate 6c. The pair of expansion plates 6b and 6a is supported on right and left spray bar covers 3B and 3A, respectively, and expanded/contracted along with the expansion/contraction operations of the right and left spray bar covers 3B and 3A and a pair of spray bars 3b and 3a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a retaining plate device for a road paving machine, and more particularly to a retaining plate device for a road paving machine capable of easily preparing for paving work.

  As a conventional retaining plate device for a road pavement machine, for example, the following is known. In this prior art, a retaining plate is hinged to the rear end of both sides of the fuselage so that it can be rotated in the horizontal direction, and the retaining plate is folded in parallel with the position developed perpendicular to the traveling direction of the fuselage. It can be opened and closed. And, at the position where the retaining plate is deployed, the retaining plate covers the front surface of the expansion screw, and the asphalt composite material is prevented from being dissipated forward to facilitate the feeding of the asphalt composite material by the expansion screw. (For example, refer to Patent Document 1).

Further, as a related art related to a retaining plate device for a road paving machine, for example, the following asphalt emulsion spraying machine is known. In this prior art, a pair of left and right spray bars are supported by the vehicle with their positions shifted in parallel in the front-rear direction of the traveling vehicle, and are provided so as to be extendable in the width direction of the vehicle. Then, the spreading width of the asphalt emulsion can be arbitrarily adjusted (for example, see Patent Document 2).
JP 2004-300855 A (page 3, FIGS. 1 and 2). Japanese Patent No. 3542903 (page 3, FIG. 4).

  In the prior art described in Patent Document 1, only a retaining plate having a fixed length that covers the front surface of the expansion screw is described.

  Moreover, in the prior art described in Patent Document 2, only a pair of left and right spray bars provided to be extendable in the vehicle width direction is described.

  Therefore, the preparation of the paving work should be simplified, and the amount of asphalt mixture before the screed should be solved easily and almost uniformly over the entire width of the screed whose width is adjusted according to the width of the road to be paved. A technical problem arises, and the present invention aims to solve this problem.

  The present invention has been proposed to achieve the above object, and the invention according to claim 1 is provided on the rear side of the machine main body so as to be stretchable in the width direction of the machine main body, and asphalt emulsion on the roadbed. A pair of spray bars for spraying, and an asphalt mixture disposed at the rear of the spray bar at a required interval and received at the front of the machine body and sent to the rear of the machine body. In a road pavement machine comprising a screw spreading on the spread roadbed and a screed for spreading and leveling the asphalt mixture spread on the roadbed, the screw is spread and spread on the front side of the screw. A pair of expansion and contraction retainers that are made to be extendable in the width direction of the machine body are provided with a retaining plate that restricts the asphalt mixture from being scattered to the front side of the machine body. Retaining a road pavement machine comprising a pair of extending plates, wherein the pair of expansion and contraction retaining plates are respectively supported by the pair of spray bars and expanded and contracted in accordance with the expansion and contraction of the pair of spray bars. A plate apparatus is provided.

  According to this configuration, the pair of spray bars are expanded and contracted according to the road width to be paved, and the spreading width of the asphalt mixture is adjusted to match the road width to be paved. At this time, as the pair of spray bars expand and contract, the pair of extendable retaining plates are expanded and contracted, the horizontal width of the retaining plates is adjusted to the required width, and the asphalt spread on the roadbed with screws. Dissipation of the mixed material to the front side of the machine body is restricted.

  According to a second aspect of the present invention, the retaining plate includes a stationary retaining plate fixed to the machine body and a pair of telescopic retaining plates that are extendable on the left and right sides of the stationary retaining plate. 2. An elastic member as a part of the retaining plate is attached to the lower part of each retaining plate, and the pair of telescopic retaining plates are supported by the pair of spray bars, respectively. A retaining plate device for a road paving machine as described.

  According to this configuration, the elastic member is attached to the lower part of the pair of retaining plates, and the expansion / contraction operation of each of the expansion / contraction retaining plates on the left and right of the fixed retaining plate is performed in accordance with the expansion / contraction operation of the pair of spray bars. The horizontal width of the retaining plate is adjusted to the required width. At this time, the elastic member attached to the lower part of the expansion / contraction retaining plate is also integrally expanded / contracted.

  According to the first aspect of the present invention, there is provided a retaining plate in the width direction of the machine main body that covers the front side of the screw and restricts the asphalt mixture spread by the screw from being scattered to the front side of the machine main body. It is composed of a pair of telescopic retaining plates that can be stretched, and the pair of telescopic retaining plates are respectively supported by a pair of spray bars and stretched in accordance with the stretching operation of the pair of spray bars. Therefore, when the horizontal width of the pair of spray bars is adjusted so as to match the width of the road to be paved, the horizontal width of the retaining plate is adjusted to the required width by performing the expansion / contraction operation of the pair of elastic retaining plates. This makes it easy to prepare for paving work. In general, the screed is a telescopic type whose lateral width can be changed, and is used by adjusting to a width substantially equal to the lateral width of the pair of spray bars during paving work. Therefore, the horizontal width of the retaining plate is easily adjusted to a required width adapted to the horizontal width of the screed adjusted according to the road width to be paved. As a result, the asphalt mixture spread by the screw is restricted from being dissipated to the front side of the machine body by the retaining plate, and the amount of the asphalt mixture before the screed is made substantially uniform over the entire width of the screed. There is an advantage that you can.

  According to a second aspect of the present invention, the retaining plate includes a stationary retaining plate fixed to the machine body, a pair of telescopic retaining plates that are extendable on the left and right sides of the stationary retaining plate, and a pair of retaining plates. Since the elastic member attached to the lower part of the plate and the pair of telescopic retaining plates are respectively supported by the pair of spray bars, the retaining plate includes the stationary retaining plate and the stationary retaining plate. By comprising a pair of expansion and contraction retaining plates that can expand and contract on the left and right sides of the plate, the length of each expansion and contraction retaining plate becomes shorter and lighter, and a pair of sprays with expansion and contraction of the pair of expansion and contraction retaining plates The advantage is that the expansion and contraction of the bar is easy and good. That. In addition, since the elastic member attached to the lower part of the retaining plate also integrally expands and contracts, even when the width of the screed is widened, the asphalt frame is moved forward by the elastic retaining plate and the elastic member. You can regulate the dissipation.

  The purpose of simplifying the preparation of the paving work and making the amount of asphalt mixture before the screed easily and almost uniform over the entire width of the screed whose width was adjusted according to the road width to be paved A pair of spray bars provided on the rear side so as to be stretchable in the width direction of the machine main body and spraying asphalt emulsion on the roadbed, and disposed behind the spray bar at a required interval, A screw that spreads the asphalt mixture received at the front part and sent to the rear part of the machine body on the roadbed on which the asphalt emulsion is dispersed, and a screed that spreads and leveles the asphalt mixture spread on the roadbed, The asphalt mixture spread over the front surface of the screw and spread with the screw is dissipated to the front side of the machine body. A retaining plate that is fixed to the machine body, and a pair of telescopic retaining plates that are extendable on the left and right sides of the stationary retaining plate. The telescopic retaining plate is supported by the pair of spray bars, and is configured to expand and contract in accordance with the expansion and contraction operation of the pair of spray bars.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view schematically showing the present embodiment, FIG. 2 is a side view, and FIG. 3 is an enlarged side view showing a main part in FIG. The present embodiment is applied to a road traveling road paving machine.

  First, the structure of the retaining plate apparatus of the road paver according to the present embodiment will be described. 1 and 2, a pair of left and right spray bars 3a and 3b for spraying asphalt emulsion on the roadbed are positioned in the traveling direction of the machine main body 1 immediately behind the rear wheel 2 on the rear side of the machine main body 1. Is supported by the machine body 1 and is provided so as to be extendable in the width direction of the machine body 1 by a hydraulic cylinder or the like.

  The pair of spray bars 3a and 3b are covered with left and right spray bar covers 3A and 3B, respectively, and the left and right spray bar covers 3A and 3B are covered with a center spray bar cover 3C. The asphalt composite material received by a hopper (not shown) at the front of the machine body 1 and sent to the rear part of the machine body 1 by a conveyor (not shown) is placed behind the pair of spray bars 3a and 3b at a required interval. A screw 4 that spreads on the roadbed on which the asphalt emulsion is spread is disposed.

  A screed mechanism 5 is disposed behind the screw 4 to spread and level the asphalt mixture spread on the roadbed by the screw 4. The screed mechanism 5 includes a main screed 5c fixed to the machine main body 1 and a pair of left and right disposed after the main screed 5c and attached to the outside of the machine main body 1 in the width direction by a hydraulic cylinder or the like. It is comprised by the expansion-contraction screed 5a, 5b.

  Further, the asphalt mixture spread between the left and right spray bar covers 3A, 3B and the screw 4 so as to cover the front side of the screw 4 and spread by the screw 4 is moved to the front side of the machine body 1. A retaining plate 6 for restricting dissipation is provided. The retaining plate 6 is disposed on a fixed retaining plate 6c fixed to the machine main body 1 and in front of the fixed retaining plate 6c at an appropriate distance from the fixed retaining plate 6c. It is composed of a pair of telescopic retaining plates 6a and 6b that are made freely.

  The pair of expansion and contraction retaining plates 6a and 6b are respectively supported by the left and right spray bar covers 3A and 3B, and expand and contract in accordance with the expansion and contraction operations of the left and right spray bar covers 3A and 3B and the pair of spray bars 3a and 3b. Is configured to do.

  With reference to FIG. 3, the manner of attaching each spray bar cover 3A, 3B, 3C to the machine body 1, the manner of attaching each retaining plate 6a, 6b, 6c to each spray bar cover 3A, 3B, 3C, etc. explain.

  A support member 7 extending in the width direction of the machine body 1 is suspended and supported by the machine body 1 via a support shaft 8. A slide member 10 is slidably supported by a pair of support rollers 9a, 9a attached to the support member 7 in a rollable manner, and a left spray bar 3a is fixed to the lower portion of the slide member 10. The left spray bar 3a is integrally attached to the left spray bar 3a via an appropriate connecting member (not shown), and rubber plates 11a and 11a are attached to the lower part of the spray bar cover 3A.

  The slide member 12 is slidably supported by another pair of support rollers 9b, 9b attached to the support member 7 so as to be able to roll, and a right spray bar 3b is fixed to the lower portion of the slide member 12. ing. A right spray bar cover 3B is integrally attached to the right spray bar 3b through an appropriate connecting member (not shown) at the back of the paper surface of FIG. 3, and the right and left spray bar covers 3A are also attached. , 3B is provided with a central spray bar cover 3C.

  A plurality of pairs of nozzles 13 having different nozzle diameters are attached to the lower surfaces of the spray bars 3a and 3b at equal intervals along the respective length directions.

  A bracket 14 is attached to the rear side surface of the spray bar covers 3A and 3B in a rearward direction by fastening bolts 15, and the telescopic retaining plates 6a and 6b are fixed to the rear end portions of the bracket 14. ing. A fixed retaining plate 6c fixed to the machine main body 1 is disposed in the rear central portion at an appropriate distance from the telescopic retaining plates 6a and 6b.

  A mounting plate 17 is attached to the front side of the fixed retaining plate 6c by mounting bolts 16 and 16 so that a required amount can be adjusted up and down. The mounting plate 17 extends substantially horizontally in the width direction of the machine body 1. The support pipe 18 is fixed. A pipe shaft 19 corresponding to the support pipe 18 is fixed to the upper end of the telescopic retaining plate 6b, and the pipe shaft 19 is slidably inserted into the support pipe 18.

  A sliding seat 20 that slides on the front surface portion of the fixed retaining plate 6c is fixed to the lower side of the rear surface of the telescopic retaining plates 6a and 6b. Further, rubber plates 21a and 21b functioning as a part of each of the telescopic retaining plates 6a and 6b and the fixed retaining plate 6c are provided below the telescopic retaining plates 6a and 6b and the lower part of the fixed retaining plate 6c. , 21c are respectively attached.

  With the pipe shaft 19 that slides inside the support pipe 18 and the sliding seat 20, the expansion and contraction retaining plates 6a and 6b can be expanded and contracted stably and smoothly as the spray bars 3a and 3b expand and contract. It is comprised so that operation | movement may be performed. Further, the telescopic retaining plates 6q and 6b are supported by the spray bar covers 3A and 3B by fastening the bolts 15 and inserting the pipe shaft 19 into the support pipe 18, so that the spray bar covers 3A and 3B can be easily maintained. It is configured so that 3B and the elastic retaining plates 6a and 6b can be easily separated.

  Next, the operation of the above-configured road paving machine retaining plate apparatus will be described. The left and right spray bar covers 3A, 3B and the pair of spray bars 3a, 3b are expanded and contracted according to the road width to be paved, and the spreading width of the asphalt mixture is adjusted to match the road width to be paved. At this time, along with the expansion and contraction of the pair of spray bars 3a and 3b, the expansion and contraction of the expansion and contraction retaining plates 6a and 6b on the left and right of the fixed retaining plate 6c is performed, and the horizontal width of the retaining plate 6 is the required width. Adjusted to

  Then, the asphalt mixture spread on the roadbed by the screw 4 is restricted from dissipating to the front side of the machine body 1 by the retaining plate 6, and the asphalt mixture is placed on the roadbed before the screed mechanism 5. The screed mechanism 5 is spread over the entire width.

  As described above, in the retaining plate device of the road paving machine according to the present embodiment, the lateral adjustment of the left and right spray bar covers 3A, 3B and the pair of spray bars 3a, 3b is adjusted so as to match the road width to be paved. When the left and right spray bar covers 3A and 3B and the pair of spray bars 3a and 3b are adjusted, the horizontal width of the retaining plate 6 is adjusted to the required width, making it easy to prepare for paving work. Can be done.

  At the time of paving, the screed mechanism 5 is used after being adjusted to have substantially the same width as that of the left and right spray bar covers 3A, 3B and the pair of spray bars 3a, 3b. Accordingly, the horizontal width of the retaining plate 6 is easily adjusted to the required width adapted to the horizontal width of the screed mechanism 5, and the amount of asphalt mixture before the screed mechanism 5 is adjusted over the entire width of the screed mechanism 5. It can be made almost uniform.

  The retaining plate 6 is composed of a fixed retaining plate 6c and a pair of telescopic retaining plates 6a, 6b that are stretchable on the left and right sides of the stationary retaining plate 6c, whereby each of the telescopic retaining plates 6a, 6b. The length and length of the spray bar covers 3A, 3B and the pair of spray bars 3a, 3b are easily expanded and contracted with the expansion / contraction operation of the pair of expansion / contraction retaining plates 6a, 6b. It can be done well.

  The pipe shaft 19 fixed to the upper ends of the telescopic retaining plates 6a and 6b is slidably inserted into the support pipe 18 attached to the fixed retaining plate 6c, and the rear lower side of the telescopic retaining plates 6a and 6b. Is provided with a sliding seat 20 that slides on the front surface of the fixed retaining plate 6c, so that the left and right spray bar covers 3A and 3B and the pair of spray bars 3a and 3b can be expanded and contracted. The expansion / contraction retaining plates 6a and 6b can be expanded and contracted stably and smoothly.

  The telescopic retaining plates 6a and 6b are supported on the spray bar covers 3A and 3B by fastening the bolts 15 and inserting the pipe shaft 19 into the support pipe 18, respectively. And the telescopic retaining plates 6a and 6b can be easily separated.

  In the above embodiment, the retaining plate is composed of a fixed retaining plate and a pair of telescopic retaining plates that are stretchable on the left and right of the stationary retaining plate. It may be configured only by a retaining plate, and the pair of expansion / contraction retaining plates may be expanded / contracted with the expansion / contraction operation of the pair of spray bars. By configuring the retaining plate only with a pair of expansion and contraction retaining plates, the configuration can be simplified.

  Further, 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.

The top view which shows roughly the retaining plate apparatus of the road pavement machine which concerns on the Example of this invention. The side view of the said Example. The side view which expands and shows the principal part in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Machine main body 3A, 3B, 3C Spray bar cover 3a, 3b Spray bar 4 Screw 5 Screed mechanism 5a, 5b Telescoping screed 5c Main screed 6 Retaining plate 6a, 6b Telescopic retaining plate 6c Fixed retaining plate

Claims (2)

A pair of spray bars provided on the rear side of the machine body so as to be stretchable in the width direction of the machine body and spraying asphalt emulsion on the roadbed, and disposed behind the spray bar at a required interval, The asphalt composite material received at the front of the machine body and sent to the rear of the machine body is spread with a screw that spreads the asphalt mixture on the roadbed on which the asphalt emulsion has been spread, and the asphalt mixture spread on the roadbed. In road paving machine with screed,
A pair of retaining plates, which cover the front side of the screw and regulate the asphalt mixture spread by the screw to dissipate to the front side of the machine body, are extendable in the width direction of the machine body A pair of expansion and contraction retaining plates, and the pair of expansion and contraction retaining plates are respectively supported by the pair of spray bars and expanded and contracted with the expansion and contraction of the pair of spray bars. Retaining plate device for road paving machine. The retaining plate is composed of a fixed retaining plate fixed to the machine body and a pair of expansion and contraction retaining plates that are extendable on the left and right of the fixed retaining plate.
2. The elastic member as a part of the retaining plate is attached to the lower part of each retaining plate, and the pair of telescopic retaining plates are supported by the pair of spray bars, respectively. Retaining plate equipment for road paving machines.

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