JPH0660609U - Asphalt finisher bar conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a bar conveyor suitable for a small-scale asphalt finisher. [Structure] The fixed conveyor base plate 5 arranged from the lower end of the opening of the asphalt mixture feeding hopper 3 to the rear end of the vehicle body 1 is divided into two left and right base plate portions 5a and 5b, and a single endless chain is provided in the divided portion 11. 6 is stretched and both sides of the chain 6 are
It has a structure in which a plurality of left and right bars 7 and 8 sliding on the left and right base plate portions 5a and 5b are attached in a cantilevered manner, and the asphalt mixture from the hopper 3 is circulated by a chain 6 so that the left and right bars 7, 8 is configured to be carried out to the rear end side of the vehicle body 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an asphalt finisher for performing asphalt pavement on a road surface, and to an improvement of a bar conveyor for carrying out the asphalt mixture supplied from the opening at the lower end of the hopper to the pavement side.

[0002]

[Prior art]

 As shown in FIG. 4, a bar conveyor in a conventional asphalt finisher is circulated on both sides of a fixed conveyor base plate A made of a rectangular steel plate long in the front-rear direction by a drive unit B and a driven unit C arranged in the front and rear. It has a structure in which endless chains D, D to be driven are stretched and a plurality of bars E are attached between both chains D, D in a ladder shape, and both side chains D, D are circulated at a synchronous speed. Thus, the bar E is slidably contacted and moved rearward from the front end on the fixed conveyor base plate A to carry out the asphalt mixture supplied from the hopper F onto the fixed conveyor base plate A. .

[0003]

[Problems to be solved by the device]

 However, although the width of the bar conveyor is changed depending on the size of the asphalt finisher, even if the width is reduced when the asphalt finisher is downsized, the pair of left and right endless chains D and D in the above structure are used even if the width is reduced. Since the chain drive mechanism has been adopted, the total weight of the bar conveyor becomes unnecessarily large, and the increase in the weight does not contribute to the pavement performance at all, and it also reduces the size of the asphalt finisher. There was a problem that it hindered weight reduction.

In order to attach a plurality of bars E between the left and right chains D, D in a ladder shape, the dimension between these chains D, D is determined by the width of the fixed conveyor base plate A. Therefore, both ends of all the bars E have to be accurately attached to the chains D, D, and the work is also laborious. The present invention provides a bar conveyor for an asphalt finisher that can completely eliminate such problems.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the bar conveyor of the asphalt finisher according to the present invention is provided with an asphalt finisher that receives the asphalt mixture from the lower end of the opening of the hopper 3 arranged in the front part of the vehicle body 1 and carries it out to the rear side of the vehicle body 1. It is a bar conveyor, and the rectangular fixed conveyor base plate 5 reaching the rear end portion of the vehicle body 1 from the lower end of the opening of the hopper 3 is divided into left and right base plate portions 5a and 5b, and a chain 6 is provided in the divided portion 11. The chain 6 is stretched and endlessly hung between the drive sprocket wheel 9 and the driven sprocket wheel 10 provided on the front and rear ends of the conveyor base plate 5, and the chain 6 is mounted on the left and right base plate parts 5a and 5b. A plurality of left and right bars 7 and 8 that slide along the length of the chain 6 are attached in a cantilevered manner at appropriate intervals.

[0006]

[Action]

 With this structure, when the single endless chain 6 arranged in the center of the fixed conveyor base plate 5 is circulated, the left and right bars 7 and 8 projecting from the chain 6 on both sides are fixed conveyor base plate 5. The left and right base plate portions 5a and 5b of the slide rail 5 are integrally slid together to carry out the asphalt mixture supplied onto the fixed conveyor base plate 5 rearward. In this way, the structure in which the left and right bars 7 and 8 are projected in a cantilever manner on both sides of the single endless chain 6 reduces the weight of the bar conveyor as a whole and is suitable for downsizing the asphalt finisher and the structure is simple. Can be formed compactly, and even if there is a slight difference in the lengths of the left and right bars 7 and 8 projecting from both sides of the endless chain 6 on the left and right base plate parts 5a and 5b, the asphalt mixture is carried out. Since it does not affect the bar and does not require the accuracy of mounting the bar, the bar conveyor can be easily manufactured.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings, in which a vehicle body 1 of a small asphalt finisher is constructed so that it can be driven by crawlers 2 and 2 arranged on both left and right sides thereof. A hopper 3 is arranged on the front part of the vehicle body 1, and a bar conveyor 4 for conveying asphalt mixture is arranged from below the lower end of the opening of the hopper to the rear end.

As shown in FIG. 2, the bar conveyer 4 is a solid steel plate having a fixed width, which is horizontally arranged from below the lower end of the opening of the hopper 3 to the rear end of the vehicle body 1. A constant conveyor base plate 5, an endless chain 6 stretched over the entire length in the center of the fixed conveyor base plate 5 in the width direction, and a conveyor base plate that is cantilevered on both sides of the endless chain 6. It is composed of a plurality of left and right bars 7 and 8 which slide on the left and right base plate portions 5a and 5b, a driving sprocket wheel 9 and a driven sprocket wheel 10 around which an endless chain 6 is stretched.

Explaining the above-mentioned configuration in detail, the fixed conveyor base plate 5 has its front and rear portions bent downward in an arc shape, and the center portion in the width direction is cut over the entire length to form left and right base plates. The parts 5a and 5b are divided at small intervals, and the drive sprocket wheel 9 and the driven sprocket wheel 10 are arranged along the curved front and rear parts of the divided part 11 respectively. A central shaft 12 of the drive sprocket wheel 9 is configured to be rotationally driven by a hydraulic motor 13.

Further, the chain 6 endlessly hung between the driving sprocket wheel 9 and the driven sprocket wheel 10 has its upper chain portion circulated along the inside of the divided portion 11 of the fixed conveyor base plate 5. It is arranged as follows. The left and right bars 7 and 8 attached at appropriate intervals in the length direction of the endless chain 6 are formed to have a length substantially equal to the width of the left and right base plate portions 5a and 5b of the conveyor base plate 5, respectively. The base end portion is fixed to the side surface of the endless chain 6 by a suitable mounting member 14 and extends in the width direction of the left and right base plate portions 5a, 5b. Reference numeral 15 is a cover made of an elongated shape member having a mountain-shaped cross section that covers the central dividing portion 11 of the fixed conveyor base plate 5 over the entire length, and is fixed and supported at a proper position of the vehicle body 1 to protect the endless chain 6. Is.

With such a configuration, after the asphalt mixture is put into the hopper 3 from the dump truck, the crawler 2 is driven to slow down the road surface to be paved, and the endless chain 6 is circulated and driven. The mixed material is supplied from the lower end of the opening of the hopper 3 onto the front end portion of the fixed conveyor base plate 5, and is driven by the endless chain 6 by the left and right bars 7 and 8 sliding on the left and right base plate portions 5a and 5b. 5 is sent backward, discharged from the carry-out end to the road surface, and screed 16 forms an asphalt pavement with a certain thickness.

In the above embodiment, the left and right bars 7 and 8 are attached so as to form a pair on both sides of the endless chain 6, but the endless chain 6 is alternately staggered in the lengthwise direction to form a zigzag shape. You may attach it like this.

[0013]

[Effect of device]

 As described above, according to the bar conveyor of the asphalt finisher of the present invention, the rectangular fixed conveyor base plate 5 reaching the rear end of the vehicle body 1 from the opening lower end of the hopper 3 is divided into left and right base plate parts 5a and 5b. Then, the chain 6 is stretched over the divided portion 11, and the chain 6 is endlessly hung between the drive sprocket wheel 9 and the driven sprocket wheel 10 provided on the front and rear ends of the conveyor base plate 5. Since a plurality of left and right bars 7 and 8 sliding on the right and left base plate portions 5a and 5b are attached to the chain 6 in a cantilever manner at appropriate intervals in the length direction of the chain 6, a fixed conveyor base plate is provided. Since one endless chain 6 is arranged in the center of 5, and the left and right bars 7 and 8 are cantilevered on both sides of the endless chain 6, the weight of the entire bar conveyor can be reduced. The extra weight as much as possible And it is capable of providing the best bar conveyor for small asphalt finisher.

Further, the entire structure is simple, and the width of the fixed conveyor base plate 5 can be set to a desired width without being influenced by the arrangement of the endless chains, and both sides of the endless chain 6 can be set. Even if there is a slight difference in the lengths of the left and right bars 7 and 8 projecting from the left and right base plate parts 5a and 5b, it does not affect the carry-out of the asphalt mixture, and the bar mounting accuracy is high. Since it is not required, the bar conveyor can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a simplified side view of an asphalt finisher,

FIG. 2 is a simplified perspective view of burgon hair.

FIG. 3 is a vertical sectional front view thereof,

FIG. 4 is a simplified perspective view showing a conventional example.

[Explanation of symbols]

 1 vehicle body 3 hopper 4 bar conveyor 5 fixed conveyor base plate 5a, 5b left and right base plate part 6 endless chain 7, 8 left and right bar 9 drive sprocket wheel 10 driven sprocket wheel 11 split part

Claims (1)

[Scope of utility model registration request] 1. A bar conveyor for an asphalt finisher that receives an asphalt mixture from an opening lower end of a hopper 3 arranged in a front portion of a vehicle body 1 and carries it out to the rear side of the vehicle body 1, from the opening lower end of the hopper 3. Attach the rectangular fixed conveyor base plate 5 reaching the rear end of the vehicle body 1 to the left and right base plate parts.
5a and 5b are divided into two, and a chain 6 is stretched on the divided portion 11, and the chain 6 is endlessly hung between a drive sprocket wheel 9 and a driven sprocket wheel 10 provided on the front and rear ends of the conveyor base plate 5. An asphalt characterized in that a plurality of left and right bars 7 and 8 sliding on the left and right base plate parts 5a and 5b are attached to the chain 6 in a cantilever manner at appropriate intervals in the length direction of the chain 6. Finisher bar conveyor.