JP2009221839A - Self-propelled paving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate getting traffic permission of a special vehicle by detachably forming a charging feeder, and detaching it when carrying a paving machine to make a loading state compact and reduce the load weight. <P>SOLUTION: In a self-propelled paving machine 10 having the charging feeder 18 loading paving materials fed into a receiving hopper 17 to a first hopper 15 or a second hopper 16, the charging feeder 18 is installed with a mounting part 40 projecting downward at an almost intermediate position in the longitudinal direction, and the mounting part 40 is coupled by a pivot pin 19 to a fixing part 50 installed in the upper part of a house cover 20 of the self-propelled paving machine 10, thereby detachably forming the charging feeder 18. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a self-propelled pavement machine, and more particularly, to a self-propelled pavement machine provided with a charging feeder that loads a pavement material put into a receiving hopper into one or a plurality of charging hoppers. .

  Conventionally, a paving machine equipped with a plurality of hoppers and screeds is used when a plurality of types of pavement materials are spread and leveled in one paving operation (see, for example, Patent Documents 1, 2, and 3).

  Patent document 1 removes the base hopper mounted in the standard, and the attached hopper apparatus provided with the 1st hopper which stores the pavement material for lower layers, and the 2nd hopper which stores the pavement material for upper layers in the removed position And an attached screed device having a leveling arm and an attached screed is mounted at the rear position of a base screed mounted as standard.

  Patent Document 2 is a configuration in which a material storage container (hopper) for a support layer material and a material storage container for a cover layer material are mounted, and each material is laid by a separate laying plate (tamper plate). The structure which supplies alternately to each material storage container with a belt conveyor from a storage container is disclosed.

  Patent Document 3 discloses a piling material loading feeder (charging feeder) in a floor leveling machine (paving machine) in which a front hopper (first hopper) and a rear hopper (second hopper) are provided in a self-propelled vehicle. The pavement material is provided with the lower end of the loading frame connected to the receiving hopper, a discharge port is formed in the middle part between the lower end of the loading frame and the discharge end, and an open / close lid is provided at the discharge port. Disclosed is a floor leveling machine in which a loading device is mounted on a self-propelled vehicle with the discharge port of the loading feeder positioned above the front hopper and the discharge end of the loading feeder positioned above the rear hopper. .

Japanese Patent No. 3548129 JP-T-2002-504636 (7th to 9th pages, FIGS. 7 to 9) Japanese Patent No. 3471597

  Patent Document 1 can perform leveling of a plurality of layers by attaching an attached hopper device and an attached screed device as necessary, but in a structure for attaching a charging feeder for supplying a paving material to the hopper. is not.

  Patent document 2 is provided with a plurality of material storage containers (hoppers) and charging feeders by assembling the laying apparatus, and can be alternately supplied from the relay storage container to each material storage container. When assembling, it is necessary to remove the existing material storage container and driver's seat.

  In Patent Document 3, the charging feeder is supported by a pivot pin, and is formed so that it can be moved up and down by the operation of the raising cylinder. Therefore, the height of the loading feeder can be lowered when the loading device is not used, and the loading height can be kept low when the spreader is loaded on the trailer and transported. However, since the connecting portion of the pivoting pin of the charging feeder is surrounded by the concave portion of the front hopper, it is extremely difficult to remove the charging feeder by pulling out the pivoting pin.

  Here, in order to store pavement materials such as asphalt in the first hopper and the second hopper and spread one or two kinds of pavement materials in one paving operation, a large engine output is generally required. Two engines are installed. Therefore, the weight of the spreading machine increases.

  A conventional large pavement machine of this kind is equipped with two engines with an engine output of about 132 to 140 kW, and the weight is 27 to 28 tons. The trailer carrying the paving machine is also large, so the weight of the vehicle is 22-23 tons, and the total weight of the trailer carrying the paving machine is 49-51 tons.

  Vehicles traveling on domestic roads are subject to restrictions on the width and total weight of vehicles according to the Road Law, and vehicles exceeding general limit values require permission from the road administrator (special vehicle passage permission) Become. There are several stages of obtaining special vehicle traffic permission. If the total weight exceeds 45 tons, it becomes difficult to apply for permission as follows.

  For these reasons, in order to keep the total weight below 45 tons, it is desired to reduce the weight of the paving machine itself to about 23 tons. Although it is conceivable to reduce the weight of the paving machine and reduce the weight, in that case, the paving capability such as the paving width and construction time will be reduced.

  Therefore, the charging feeder is detachably formed while maintaining the same level of pavement capacity as before, and the charging feeder is removed when transporting the paving machine, making the loading state compact and reducing the loading weight. The technical problem to be solved in order to facilitate the acquisition of the special vehicle passage permission 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 characterized in that the charging feeder for loading the pavement material put into the receiving hopper into the first hopper or the second hopper, and the first Each conveyor that conveys the pavement material of the first hopper or the second hopper to the construction surface behind the machine body, the front screw spreader that diffuses the pavement material of the first hopper to the construction surface, and the pavement material of the second hopper are diffused to the construction surface. Self-propelled with a pavement device comprising a rear screw spreader, a pavement material diffused by the front screw spreader, and a front screed and / or a rear screed for spreading the pavement material diffused by the rear screw spreader An engine for supplying power to each hydraulic actuator of the pavement device and the self-propelled traveling device via a hydraulic pump. In the mounted self-propelled pavement machine, the charging feeder is provided with a mounting part protruding downward at a substantially intermediate position in the longitudinal direction, and the mounting part is pivoted to a fixed part provided on the upper part of the house cover of the paving machine. Provided is a self-propelled pavement machine characterized in that the charging feeder is detachably formed by connecting with a landing pin.

  According to this configuration, the mounting portion that protrudes downward from the charging feeder is coupled to the fixing portion that is provided on the upper portion of the house cover by the pivot pin, and the coupling portion of the pivot pin is the house. Since it is exposed from the cover, it is easy to pull out or insert the pivot pin, and the charging feeder is detachable. Therefore, by removing the charging feeder during transportation of a paving machine, for example, a multi-paver, the loading state becomes compact and the loading weight can be reduced.

  In construction that requires a large capacity, the charging feeder is removed to reduce the load on the engine, and a separate dedicated machine is used to supply the paving material. On the other hand, in construction that does not require large capacity, a charging feeder is integrally attached to the machine body, and construction is performed while supplying the pavement material with the charging feeder.

The invention described in claim 2 is a charging feeder for loading the pavement material put into the receiving hopper into the charging hopper, a conveyor for conveying the pavement material in the charging hopper to the construction surface behind the machine body, A self-propelled pavement machine comprising a pavement device comprising: a screw spreader for diffusing pavement material conveyed by a conveyor to a construction surface; and a screed for spreading and leveling the pavement material diffused by the screw spreader. In a self-propelled pavement machine equipped with an engine that supplies power to each hydraulic actuator of the device and the self-propelled traveling device via a hydraulic pump,
The charging feeder is provided with a mounting portion protruding downward at a substantially intermediate position in the longitudinal direction, and the mounting portion is coupled to a fixing portion provided at a front portion of the charging hopper of a paving machine with a pivot pin. The fixing portion is attached to a lower bracket fixed to a front portion of the charging hopper, a support shaft in the front-rear direction provided on the lower bracket, and swingable to the left and right with respect to the support shaft. An upper bracket formed on the left and right ends of the upper bracket, and a bearing that rotatably supports the pivot pin, wherein the charging feeder is detachably formed. Providing self-propelled paving machines.

  According to this configuration, the mounting portion provided to project downward from the charging feeder is coupled to the fixing portion provided at the front portion of the charging hopper by the pivot pin, and the coupling of the pivot pin is performed. Since the portion is exposed from the charging hopper, the pivoting pin can be easily pulled out or inserted, and the charging feeder is detachably formed. Accordingly, by removing the charging feeder during transportation of a paving machine, for example, an asphalt finisher, the loading state becomes compact and the loading weight can be reduced.

  In construction that requires a large capacity, the charging feeder is removed to reduce the load on the engine, and a separate dedicated machine is used to supply the paving material. On the other hand, in construction that does not require large capacity, a charging feeder is integrally attached to the machine body, and construction is performed while supplying the pavement material with the charging feeder. In addition, since the charging feeder is pivotally connected to the fixed part on the aircraft side via a pivot pin, the pin connection part of the charging feeder has the same action as the universal joint mechanism, It works flexibly following the uneven surface of the road while driving.

  In the first aspect of the invention, since the charging feeder is easily formed by connecting the pivoting pins, for example, when the multi-pavers or the like is transported, the charging feeder is removed, so that the loading state becomes compact. The load weight can also be reduced. Therefore, it is easy to obtain a special vehicle passage permission.

  In addition, because the charging feeder can be easily attached and detached, it is possible to reduce the engine load by removing the charging feeder using a separate dedicated machine to supply the pavement material for large-capacity construction. .

  According to the second aspect of the present invention, since the charging feeder is easily formed by attaching the pivoting pin, the same effect as that of the first aspect of the invention, i.e., transportation of, for example, an asphalt finisher Sometimes, by removing the charging feeder, the loading state becomes compact and the loading weight can be reduced, and asphalt finisher and the like can be easily transported by a trailer or the like.

  In addition, because the charging feeder can be easily attached and detached, it is possible to reduce the engine load by removing the charging feeder using a separate dedicated machine to supply the pavement material for large-capacity construction. . Furthermore, the rotatable pin connecting portion of the charging feeder can play a role similar to that of the universal joint mechanism, so that even when the unevenness on the road surface is driven by a wheel, the unevenness is very simple. Depending on the surface, the charging feeder can follow up easily and smoothly.

The side view which shows the multi-paver of the state which attached the charging feeder as Example 1 of the self-propelled pavement machine which concerns on this invention. It is an enlarged view of the attachment part of the charging feeder which concerns on Example 1, (A) is a side view, (B) is a front view. The side view which shows the multi-paver of the state which removed the charging feeder of FIG. The side view which shows schematic structure which shows the asphalt finisher of the state before attaching a charging feeder as Example 2 of the self-propelled pavement machine which concerns on this invention. The principal part top view which shows the state which attached the charging feeder to the asphalt finisher which concerns on Example 2. FIG. B arrow view of FIG. It is an enlarged view of the attachment part of the charging feeder which concerns on Example 2, (A) is a side view, (B) is a front view.

  In the present invention, the charging feeder is formed so as to be detachable while maintaining the same level of paving capability as before, and the charging feeder is removed during transportation of the paving machine, thereby reducing the loading state and reducing the loading weight. In order to achieve the purpose of facilitating the acquisition of the special vehicle passage permission, the charging feeder for loading the pavement material put into the receiving hopper into the first hopper or the second hopper, the first hopper or the first hopper Each conveyor that transports pavement material of 2 hoppers to the construction surface behind the fuselage, front screw spreader that diffuses pavement material of the first hopper to the construction surface, and rear screw spreader that diffuses pavement material of the second hopper to the construction surface And pavement material diffused by the front screw spreader and pavement material diffused by the rear screw spreader. A self-propelled pavement machine having a pavement device composed of a front screed and / or a rear screed that supplies power to each hydraulic actuator of the pavement device and the self-propelled travel device via a hydraulic pump. In the self-propelled pavement machine equipped with the engine, the charging feeder is provided with a mounting part protruding downward at a substantially middle position in the longitudinal direction, and the mounting part is mounted on the fixed part provided on the upper part of the house cover of the pavement machine. The charging feeders were detachably formed by connecting the parts with pivot pins.

  Hereinafter, the preferred embodiment of the self-propelled paving machine of the present invention will be described. FIG. 1 is a side view showing a multi-paver 10 as an example of a self-propelled paving machine. The multi-paver 10 has a vehicle body (airframe) 12 supported by a pair of left and right crawlers 11, and an engine 13 is mounted on the vehicle body 12 at an upper portion of a substantially central position of the crawler 11. When the paving machine self-propels, the traveling motor 14 constituting the traveling device is rotated by the engine output of the engine 13, the crawler 11 is driven, and the vehicle body 12 is self-propelled.

  The multi-paver 10 has a plurality of pavement materials for accommodating each pavement material so that two different types of pavement materials can be laid on the upper and lower layers simultaneously in one pavement operation. A hopper and leveling device are provided. As shown in the figure, a first hopper 15 is provided at the front part (left part in the figure) of the vehicle body 12, and a second hopper 16 is provided at the rear upper part of the first hopper 15. That is, the first hopper 15 is installed at a low position on the front side of the engine 13, and the second hopper 16 is installed at a high position on the rear side of the engine 13.

  A pavement receiving hopper 17 and a charging feeder 18 are provided on the front side of the vehicle body 12. The charging feeder 18 is attached with the front portion lowered and the rear portion inclined higher. The charging feeder 18 is driven by a necessary engine output of the engine 13, and transfers the pavement material put into the receiving hopper 17 from a dump truck (not shown) to the upper side of the charging feeder 18.

  Here, the charging feeder 18 is provided with a discharge port 18b that can be opened and closed in the middle of the transfer path. When the discharge port 18b is closed, all the paving material transferred from the receiving hopper 17 is charged. The pavement material is discharged from a discharge portion 18 a provided at the upper end and supplied to the second hopper 16.

  When the discharge port 18b is closed, the pavement material is transferred from the receiving hopper 17 to the highest position of the charging feeder 18. Therefore, when the pavement material is supplied to the second hopper 16, the charging feeder 18 is operated at high speed. And the engine output of one of the engines 13 is required.

  On the other hand, when the discharge port 18b of the charging feeder 18 is opened, the pavement material transferred from the receiving hopper 17 is discharged from the discharge port 18b provided in the middle and is stored in the first hopper 15. In the state where the discharge port 18b is opened, all the pavement material transferred from the receiving hopper 17 is accommodated in the first hopper 15, but since the pavement material is transferred only to a lower position of the charging feeder 18, charging is performed. The feeder 18 may be operated at a low speed, and relatively little engine power is required.

  The charging feeder 18 is supported on the vehicle body 12 by a pivot pin 19 and is formed to be able to be tilted up and down with the pivot pin 19 as a pivot center. Since the joint portion of the pivot pin 19 is exposed from the house cover 20, as will be described later, the pivot pin 19 can be easily pulled out or inserted, and the charging feeder 18 is detachably formed.

Here, the second hopper 16 has a larger storage capacity than the first hopper 15 and has a storage capacity almost twice as large. For example, if the capacity of the first hopper 15 is 3 m ³ , the capacity of the second hopper 16 is about 6 m ³ . As described above, since a large engine output is required when supplying the pavement material to the second hopper, a large amount of pavement is applied to the second hopper 16 in advance when two different types of pavement materials are spread. This is because the material is accommodated and the pavement material is not supplied to the second hopper 16 while the multi-paver 10 is self-propelled.

  The pavement material accommodated in the first hopper 15 by the driving of the charging feeder 18 is sent to the front screw spreader 22 by the drive of a bar feeder conveyor (not shown) and diffused on the construction surface of the road. The pavement material diffused by the spreader 21 is spread by the front screed 22. Further, the pavement housed in the second hopper 16 is sent to the rear screw spreader 24 by the drive of the screw conveyor 23 in which the rotation shaft is installed in the traveling direction of the vehicle body 12, and is diffused to the road construction surface. The pavement material diffused by the rear screw spreader 24 is spread and smoothed by the rear screed 25.

  In construction that does not require large capacity, as described above, the charging feeder 18 is integrally attached to the vehicle body 12, and the vehicle body 12 is self-propelled while the charging feeder 18 is replenished with the charging material. I do. On the other hand, in construction requiring a large capacity, as described above, the pivoting pin 19 is pulled out and the charging feeder 18 is removed to reduce the engine load. Use machine.

  FIG. 2 is an enlarged view of a mounting portion of the charging feeder 18, and the charging feeder 18 is provided at a substantially intermediate position in the longitudinal direction with a mounting portion 40 protruding downward and provided on the upper portion of the house cover 20. The fixed portion 50 is connected by a pivot pin 19.

  The mounting portion 40 is a pair of left and right brackets 41 and 41 that are suspended in the width direction of the bottom surface portion of the charging feeder 18, while the fixing portion 50 is spaced apart in the front-rear direction of the upper surface portion of the house cover 20. A pair of lower brackets 51, 51 standing upright, a support shaft 52 provided in the front-rear direction between the lower brackets 51, 51, and attached to the support shaft 52 so as to be swingable in the width direction. The upper bracket 53 is provided with left and right ends of the upper bracket 53 and bearing portions 54 that support both ends of the pivot pin 19. Reference numerals 42 and 55 are detents, respectively.

  Next, when the multi-paver 10 according to the present invention is transported, the charging feeder 18 is removed to make the loading state compact and the loading weight light in order to make it easy to obtain special vehicle passage permission according to the Road Law. Turn into.

  As described above, since the charging feeder 18 is coupled by the pivot pin 19 and the coupling portion of the pivot pin 19 is exposed from the house cover 20, the pivot pin 19 can be pulled out or inserted. Easy.

  For example, if the charging feeder 18 is supported in a suspended state by a crane (not shown), the detent 42 of the pivot pin 19 is removed, and the pivot pin 19 is pulled out to either one, the mounting portion 40 and the fixing portion The pin connection with 50 is released, and the charging feeder 18 can be easily removed.

  Thus, as shown in FIG. 3, the multi-paver 10 with the charging feeder 18 removed has a compact loading state and a reduced loading weight, making it easy to apply for permission to pass special vehicles during transportation. The time until acquisition is also shortened. Further, since daytime traffic and highway traffic are possible, transportation is facilitated.

  Next, another embodiment applied to an asphalt finisher as a self-propelled paving machine of the present invention will be described with reference to FIGS. The asphalt finisher according to the present embodiment is equipped with an engine that supplies power to each hydraulic actuator of the pavement device and the self-propelled traveling device via a hydraulic pump, and the asphalt finisher is self-propelled. When doing so, the asphalt finisher is self-propelled by rotating the rear wheels and the front wheels by the output of the engine.

  As shown in FIG. 4, the pavement device of the asphalt finisher 60 includes a charging hopper 61 in which a pavement material K loaded in a receiving hopper 67 (see FIG. 5) with traveling wheels 66, 66 is loaded. The lifting hopper 61 is installed in front of the asphalt finisher 60.

  Then, behind the charging hopper 61 at the lower part of the asphalt finisher 60, the pavement material K loaded in the charging hopper 61 is conveyed to the road construction surface behind the fuselage, and conveyed by the conveyor 62. A screw spreader 63 for diffusing the pavement material K applied to the road construction surface and a screed 64 for smoothly leveling the pavement material K diffused by the screw spreader 63 on the road construction surface are sequentially provided.

  FIG. 5 shows a state where the charging feeder 68 is attached to the front side of the asphalt finisher 60. The charging feeder 68 loads the pavement material put into the receiving hopper 67 onto the charging hopper 61, and is inclined at a predetermined angle so that the rear portion is higher than the front portion.

  Further, as shown in FIG. 6, the charging feeder 68 includes a transfer conveyor 57 that rotates and moves with an endless chain, and is driven by the output of the engine 58, so that the charging feeder 68 is put into the receiving hopper 67 from the dump truck 59. The paved material is transferred above the charging feeder 68. Then, the pavement material is discharged into the charging hopper 61 by discharging the pavement material from the discharge end provided at the upper end portion of the charging feeder 68.

  7A and 7B are enlarged views of a mounting portion of the charging feeder 68. FIG. The basic configuration of the mounting portion of the charging feeder 68 is the same as the configuration of FIGS. 2 (A) and 2 (B) except for some parts, and the same components are denoted by the same reference numerals. Will be described. The charging feeder 68 is provided with a mounting portion 40 protruding downward at a substantially intermediate position in the longitudinal direction. The mounting portion 40 is coupled to the fixing portion 50 provided at the front end portion of the charging hopper 61 by a pivot pin 19.

  The mounting portion 40 includes a pair of left and right brackets 41 and 41 that are suspended in the width direction of the bottom surface portion of the charging feeder 68 (the left-right width direction LR of the machine body). On the other hand, the fixing portion 50 is fixed to the front end portion of the charging hopper 61, in the illustrated example, the front end side vertical surface (the upper surface of the front end portion of the charging hopper 61 is also possible), and is separated from each other in the front-rear direction. A lower bracket 51 having a pair of protrusions 51A, 51A, a front-rear support shaft 52 provided between the pair of protrusions 51A, 51A, and swingable in the left-right width direction with respect to the support shaft 52 The upper bracket 53 is attached to the left and right ends of the upper bracket 53, and the bearing portions 54 and 54 are provided on the left and right ends of the upper bracket 53 to support the pivot pin 19 so as to be rotatable. The finisher 60 is detachable from the airframe. The bearing portions 54, 54 according to the present embodiment support the pivot pin 19 horizontally with a little play so that the left and right end portions of the pivot pin 19 can be rotated and moved axially by a predetermined amount. ing. Reference numerals 42 and 55 are detents, respectively.

  As described above, according to the present invention, the mounting portion 40 that protrudes downward from the charging feeder 68 is coupled to the fixing portion 50 provided at the front end portion of the charging hopper 61 by the pivot pin 19. Therefore, the joint portion of the pivot pin 19 is exposed from the charging hopper 61. For this reason, the pulling-out operation or insertion operation of the pivot pin 19 is easy, and the charging feeder 68 is detachably formed. Thus, by removing the charging feeder 68 when transporting the asphalt finisher 60, the loading state can be made compact and the loading weight can be reduced. For example, the asphalt finisher 60 can be easily transported by a trailer or the like. Has merit.

  In the case of construction that requires a large capacity, the charging feeder 68 is removed to reduce the load on the engine 58, and a separate dedicated machine is used to supply the pavement material, while a construction that does not require a large capacity. In some cases, the charging feeder 68 can be integrally attached to the machine body, and construction can be performed while the paving material is supplied by the charging feeder 68.

  Further, since the charging feeder 68 is connected to the pivoting pin 19 so as to be rotatable and axially movable, the pin connection mechanism of the charging feeder 68 is the same as that of the universal joint mechanism although the structure is very simple. It can function as a universal joint. Therefore, even when the front end portion of the charging feeder 68 travels on the uneven surface on the road by the wheels 66, 66, the charging feeder 68 can be flexibly moved up and down and left and right according to the uneven surface easily and quickly. Smooth follow-up operation is possible.

  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.

  The present invention is not limited to a multi-paver and an asphalt finisher, as long as it is a self-propelled pavement machine provided with a charging feeder that loads pavement material put into a receiving hopper into one or a plurality of hoppers. All of them can be applied to traveling paving machines.

10 Multi-Paver (Self-propelled paving machine)
11 Crawler (traveling device)
12 Car body 13 Engine 14 Traveling motor (traveling device)
DESCRIPTION OF SYMBOLS 15 1st hopper 16 2nd hopper 17 Receiving hopper 18 Charging feeder 19 Pivoting pin 20 House cover 21 Front screw spreader 22 Front screed 23 Screw conveyor 24 Rear screw spreader 25 Rear screed 40 Mounting part 41 Bracket 50 Fixing part 51 Lower bracket 52 Support shaft 53 Upper bracket 54 Bearing section 58 Engine 60 Asphalt finisher (self-propelled paving machine)
61 Charging hopper 62 Conveyor 63 Screw spreader 64 Screed 66 Wheel 67 Receiving hopper 68 Charging feeder

Claims (2)

A charging feeder for loading the pavement material put into the receiving hopper into the first hopper or the second hopper, each conveyor for conveying the pavement material of the first hopper or the second hopper to the construction surface behind the machine body, and the first hopper The front screw spreader that diffuses the pavement material on the construction surface, the rear screw spreader that diffuses the pavement material of the second hopper on the construction surface, and the pavement diffused by the front screw spreader and the rear screw spreader A self-propelled paving machine provided with a pavement device composed of a front screed and / or a rear screed for spreading material, and via a hydraulic pump to each hydraulic actuator of the pavement device and the self-propelled travel device In a self-propelled paving machine equipped with an engine that supplies power,
The charging feeder is provided with a mounting portion projecting downward at a substantially intermediate position in the longitudinal direction, and the mounting portion is coupled to a fixed portion provided on an upper portion of a house cover of a paving machine with a pivot pin, A self-propelled pavement machine, characterized in that it has a detachable feeder. A charging feeder for loading the pavement material put into the receiving hopper into the charging hopper, a conveyor for conveying the pavement material in the charging hopper to the construction surface behind the machine body, and the pavement material conveyed by the conveyor A self-propelled paving machine comprising a screw spreader that diffuses to a construction surface and a screed that spreads and smoothes the pavement material diffused by the screw spreader, the pavement device and the self-propelled traveling device In a self-propelled paving machine equipped with an engine that supplies power to each hydraulic actuator via a hydraulic pump,
The charging feeder is provided with a mounting portion protruding downward at a substantially intermediate position in the longitudinal direction, and the mounting portion is coupled to a fixing portion provided at a front portion of the charging hopper of a paving machine with a pivot pin. And
The fixing portion is attached to a lower bracket fixed to the front portion of the charging hopper, a support shaft in the front-rear direction provided on the lower bracket, and swingable to the left and right with respect to the support shaft. Self-propelled, characterized in that it comprises an upper bracket and a bearing portion that is provided at both left and right end portions of the upper bracket and rotatably supports the pivot pin, and the charging feeder is detachably formed. Paving machine.

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