JP2571072Y2 - Screed device of asphalt finisher - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screed device for an asphalt finisher. In particular, the present invention relates to a screed device for an asphalt finisher. The present invention relates to a screed device for an asphalt finisher which can be made easier.

[0002]

2. Description of the Related Art FIG. 1 shows a conventional asphalt finisher.
1, the entire device is shown in a plan view.
The configuration of the conventional asphalt finisher will be described with reference to the plan view as follows. In the direction of travel of the asphalt finisher, the hopper 1 located at the leading end thereof can receive the asphalt pavement mixture 2,
The mixture 2 is sent backward by the bar conveyor 3, and then
The mixture 2 can be expanded in the working width direction by the conveyor screw 4, and then the mixture 2 is
0, it is leveled to a certain thickness, and it is laid with a screed 5 so that the pavement surface can be formed. A main screed 6 is provided on the screed 5 as a central base. A telescopic screed 7 whose outer end can be moved to the left and right according to the construction width, and an auxiliary screed 8 by bolt connection or the like to the telescopic screed 7 to further extend the width slightly, and The screed 5 is an asphalt finisher in which a vibrator and a tamper for enhancing a compaction effect are attached. FIG. 11 shows a state near the main screed 6, the telescopic screed 7, and the deflector 10, and FIGS. 8, 9, and 10 show how the mounting brackets are mounted on the telescopic screed 7. FIG. It is supported by a telescopic device 12 that protrudes from the side of the main screed 6, and its guide 13
And the telescopic cylinder 14 moves to the left and right. The main screed 6 and the telescopic screed 7 are provided with deflectors 9a and 9b in front of the respective screeds. The deflectors 9a and 9b are supported in a similar manner by the screed 5. That is, on the upper part, it is mounted by the upper mounting bracket 16 including the bracket 17, the link 18, the bolt 19, the bracket 20, the nut 21, the pin 22, and the like.
It is mounted by a lower mounting bracket 24 including a bracket 25, a rod 26, a nut 27 and the like. The deflectors 9 a and 9 b are vertically adjusted by bolts 19 of the upper mounting bracket 16, the angle is adjusted by the bracket 20, and the position and posture in the front-rear direction are adjusted by the rod 26 of the lower mounting bracket 24. In addition, during construction by the asphalt finisher, the deflectors 9a and 9b located in front of the mixture 2 spread by the screed serve to evenly spread the mixture. Further, in order to enhance the compaction effect of the pavement surface, a vibrator device and a tamper device are provided inside the screed. The tamper device 29 is driven by a hydraulic motor 36 via a drive shaft 30, bearings 31 and 33, and the like.
To generate vibration of the frame 34, and the damper edge 35 located between the deflectors 9a and 9b and the screed 5 on the pavement surface vibrates up and down to compact the composite material 2.

[0003]

[Problem to be solved by the invention] During the pavement work, workers on the side of the asphalt finisher
In order to treat the pavement surface after passing through the asphalt finisher, the mixture in front of the deflector 9b of the telescopic screed 7 is scooped with a scoop and released behind the telescopic screed 7; It falls into the space between the telescopic screed 7 and accumulates there. Also, the damper esshi 3 of the damper device 29b is used.
During the vertical movement of 5b, the mixture 2 rises and accumulates from the gap between the deflector 9b and the elastic screed 7. Then, as the mixture 2 accumulates, the pool of the mixture 2 cools and solidifies as time elapses. As a result, troubles such as hindering the operation of the damper device 29b, the deflector 9b, and the telescopic screed 7 have occurred. Therefore, in order to eliminate the problem, it is necessary to perform an operation of removing the accumulated mixture 2 at an appropriate time interval. Therefore, the work of removing the deflector 9b is performed with the telescopic screed 7 in the most extended state to the left and right.
In order to perform the work of removing the deflector 9b, first, the nuts 21b and 27b of the upper mounting bracket 16b and the lower mounting bracket 24b are loosened, and then the respective pins 22b and 28b are removed after removing the split pins. To do. Then, after removing and cleaning the mixture 2 accumulated between the elastic screed 7 and the deflector 9b, the work of attaching the deflector 9b is performed again. In order to mount the deflector 9b, first, the bolt 19b of the upper mounting bracket 16b and the bolt of the bracket 20b and the bolt and rod 26b of the lower mounting bracket 24b are used to move the deflector 9b in the vertical direction with respect to the lower surface of the telescopic screed 7. The tilt in the front-rear direction must be adjusted and set with high precision. Also, since the deflector 9b is heavy in weight,
The work of attaching and detaching the deflector 9b is difficult, and it is unsafe in terms of safety. However, in connection with the work of removing the accumulated mixture 2, a considerable amount of time and labor is required for the work of detaching and adjusting the deflector 9 b such as the work of removing the deflector 9 b and the work of attaching the deflector 9 b, and from the viewpoint of work efficiency. Also needed some improvement. An object of the present invention is to solve such various problems.

[0004]

SUMMARY OF THE INVENTION The present invention provides an asphalt comprising a main screed and a telescopic screed for evenly spreading an asphalt mixture, and a deflector is attached to a front portion of each of the main screed and the telescopic screed. In the screed device of the finisher, a bracket 17b attached to a lower portion of the deflector and a rod 26b mounted on the screed main body, the position of which can be adjusted in the deflector direction, and one end of which is detachably connected to the bracket 17b.
A pair of brackets 42 mounted horizontally at regular intervals on the upper part of the deflector; a round bar 40 provided between the pair of brackets 42; and an upper part mounted on the screed body and capable of adjusting the position in the direction of the deflector. A boss 45 fixed to a bracket 43 fixed to a boss 41 connected to the mounting bracket 16b so as to be adjustable in the vertical direction, and fitted to the round bar 40 so as to rotate and slide in the axial direction.
And a screed device for an asphalt finisher.

[0005]

According to the present invention, the telescopic screed is positioned rearward of the main screed located at the center of the pavement in order to follow the expansion or contraction of the pavement construction width, and the telescopic screed is moved in the width direction. A deflector for allowing the asphalt mixture to spread evenly is positioned in front of each of the main screed and the telescopic screed, and the deflector is supported from the main screed and the telescopic screed side. Since the screed device of the asphalt finisher is provided with a fitting capable of finely adjusting the position of the deflector with respect to the main screed and the telescoping screed, it has accumulated between the telescoping screed and the deflector during use. Activate the mounting bracket when it is necessary to remove the mixture and clean it And by, it is possible to easily clean remove accumulated mixture material and adapted to finely adjust the position of the deflector. More specifically, a boss having a round hole is attached to the telescopic screed side at the connecting portion between the distal end portion of the upper mounting bracket of the telescopic screed and the deflector, and a round shaft is provided to the deflector side. A boss having a round hole is attached to the end of a bracket protruding forward from the mounting bracket provided on the upper part of the deflector, and a horizontal round shaft supported by the bracket is provided on the upper rear surface of the deflector, and the horizontal round shaft and the boss By fitting a round hole, a mounting bracket is provided that supports the deflector rotatably about the round shaft with respect to the telescopic screed, so that the deflector is rotated upward to ascend. Then, the space between the telescopic screed and the deflector is opened, and the asphalt mixture collected in the space can be removed and cleaned. The present invention also provides a horizontal round shaft supported by a bracket at the tip of a bracket protruding forward from a mounting bracket provided at the upper part of a telescoping screed at the tip of a bracket, and at the upper part of the rear face of the round hole and the deflector. And a horizontal round shaft slidable in the axial direction of the boss so that the deflector can move left and right with respect to the telescopic screed. Therefore, the deflector can be moved outward to avoid the interference of the main screed 6, and cleaning can be facilitated. Next, the telescopic screed 7 and the deflector 9b
The procedure for removing and cleaning the asphalt mixture 2 accumulated in the space between the upper mounting bracket 16b
When the stop pin 38 of the round shaft 40 and the pin 28b integrated with the rod 26b of the lower mounting bracket 24b are removed, the deflector 9b is released from the adjusted and set state. As shown in FIG. 6, in the most extended state of the telescopic screed 7, there is an overlap length L with the main screed 6,
Since the deflector 9b cannot be turned by receiving this interference, it is slid outward in the axial direction with the boss 45 as a guide to avoid this interference. Thus, if the deflector 9b is rotated upward about the round hole of the boss 45, the space between the extendable screed 7 and the deflector 9b is opened. Then, in order to clean the asphalt mixture 2 accumulated in the space between the telescopic screed 7 and the deflector 9b, and then to return the deflector 9b to the original position, it is necessary to rotate the deflector 9b in the above-described reverse direction. And sliding in the axial direction, the upper mounting bracket 16b
And the lower mounting bracket 24b to the deflector bracket 17
b and set it. To rotate and flip the deflector 9b, the original upper mounting bracket 16b is used.
Since the bolts, nuts and links for adjusting and setting the position and angle of the deflector 9b with respect to the telescopic screed 7 by the lower mounting bracket 24b are not touched at all,
As described above, if the deflector 9b is returned to the original position, the posture with respect to the telescopic screed 7 does not change from that before the movement.

[0006]

[Embodiment 1] In the present invention, a main screed 6 for uniformly laying asphalt mixture 2 is provided at a central portion, and a telescopic screed 7 is provided at a rear portion thereof. In a screed device of an asphalt finisher equipped with deflectors 9a and 9b, a bracket 17b is attached to a lower portion of the deflector 9b, and one end of a rod 26b attached to a screed main body is detachably connected to the bracket 17b. 26b can be adjusted in the direction of the deflector, and a pair of brackets 42 are horizontally mounted at a fixed interval above the deflector 9b, and a round bar 40 is provided between the pair of brackets 42, and the other is attached to the screed body. Upper mounting bracket 1 that can be adjusted in the direction of the deflector
A boss 41 is connected to the boss 41 so that the boss 41 can be adjusted in the vertical direction. A bracket 43 protruding forward from the upper mounting bracket 16b is fixed to the boss 41. The boss 45 is fixed,
Since the boss 45 is a screed device of an asphalt finisher characterized in that the boss 45 is rotatably engaged with the round bar 40 and slidably in the left-right axis direction, the deflector 9b is provided at two right and left portions. The position and angle with respect to the telescopic screed 7, that is, the inclination, are adjusted and set with high accuracy by the upper mounting bracket 16b and the lower mounting bracket 24b. Therefore, the asphalt mixture collected in the space between the telescopic screed 7 and the deflector 9b can be removed and cleaned. The procedure for removing and cleaning the asphalt mixture is as described above. When the locking pin 38 of the round shaft 40 and the pin 28b integrated with the rod 26b are respectively removed, the deflector 9b becomes free from the set state, The deflector 9b can rotate and slide around the round bar 40. As shown in FIG. 6, since the telescopic screed 7 has an overlap length L with the main screed 6 in its most extended state, the deflector 9b cannot be turned due to this interference. Therefore, this interference is avoided by sliding the extendable screed 7 outward in the axial direction using the boss 45 as a guide. When the deflector 9b is rotated upward about the round hole of the boss 45, the telescopic screed 7 is rotated.
The space between the screed 7 and the deflector 9b is opened, and the asphalt mixture 2 accumulated in the space between the telescopic screed 7 and the deflector 9b can be cleaned. Thereafter, in order to return the deflector 9b to the original position, the deflector 9b is rotated and slid in the axial direction in the above-described reverse direction, and the upper mounting bracket 16b is rotated.
And the lower mounting bracket 24b may be inserted into the deflector brackets 42 and 17b, respectively, and set. The position and angle of the deflector with respect to the telescopic screed 7 can be returned to the same position as before the movement simply by returning the deflector 9b to the original position before the movement, inserting the pin joint and setting the bracket back.

[0007]

[Effect] When removing the asphalt mixture collected in the space between the telescopic screed and the deflector and cleaning it, conventionally, the bolts and nuts of the upper and lower mounting brackets must be loosened and removed to move the deflector. Although it could not be done, according to the present invention, two pins or locking pins 38 were used.
If the pin 28b integrated with the rod 26b is removed, the space can be easily opened only by rotating the deflector around the axis and sliding in the axial direction. Furthermore, since the work of detaching and attaching a single deflector heavy object can be omitted, it is effective in terms of ensuring work safety. In addition, conventionally, in order to move the deflector, the bolts, nuts and links for adjusting and setting the position and posture of the deflector with respect to the telescopic screed of the upper and lower mounting brackets had to be loosened and removed. However, when the deflector was returned to its original position, high precision was required again and adjustment had to be performed again.However, according to the present invention, there is no need for re-adjustment time, so that the work efficiency is increased. is there.

[Brief description of the drawings]

FIG. 1 is a side view showing a connection state between a portion of a screed device and a portion of a telescopic screed of an asphalt finisher according to the present invention.

FIG. 2 is a detailed view of a portion of an upper mounting bracket of FIG. 1 as viewed from above.

FIG. 3 is a detailed view of the lower mounting member of FIG. 1 as viewed from above.

FIG. 4 is a detailed side view of a fixing pin portion of an upper mounting bracket of a telescopic screed portion of the asphalt finisher according to the present invention of FIG. 1;

FIG. 5 is a side view of another embodiment different from FIG. 1 showing a connection state between a deflector portion and a telescopic screed portion of the asphalt finisher according to the present invention.

6 is a plan view of a main part of FIG. 5 showing a connection state between a deflector portion and a telescopic screed portion of the asphalt finisher according to the present invention.

FIG. 7 is a front view of a main part of FIG. 5 showing a connection state between a deflector portion and a telescopic screed portion of the asphalt finisher according to the present invention.

FIG. 8 is a side view showing a connection state between a deflector portion and a telescopic screed portion of a conventional asphalt finisher.

FIG. 9 is a plan view showing a connection state between a deflector portion and a telescopic screed portion of a conventional asphalt finisher.

FIG. 10 is a front view showing a connection state between a deflector portion and a telescopic screed portion of a conventional asphalt finisher.

FIG. 11 is a plan view showing the entire conventional asphalt finisher.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 hopper 2 mixture 3 bar conveyor 4 conveyor screw 5 screed 6 main screed 7 telescopic screed 8 auxiliary screed 9 a deflector for main screed 9 b deflector for telescopic screed 10 deflector 11 rear part of conventional device 12 telescopic device 13 guide 14 telescopic cylinder 15 Rod 16a Upper mounting bracket for main screed 16b Upper mounting bracket for telescopic screed 17a Bracket 17b Bracket 18a Link 18b Link 19a Bolt 19b Bolt 20a Bracket 20b Bracket 21a Nut 21b Nut 22a Pin 22b Pin 23 Nut fixing part 24a Lower mounting bracket for main screed 24a Lower mounting bracket for telescopic screed 25a Bracket 25b Bracket 26a Rod 26b Rod 27a Set 28a Pin 28b Pin 29a Damper device for main screed 29b Damper device for telescopic screed 30b Drive shaft 31a Bearing 31b Bearing 32a Eccentric weight 32b Eccentric weight 33a Bearing 33b Bearing 34a Frame 34b Frame 35a Damper edge 35b Damper edge 36 Hydraulic motor Motor 36 Hydraulic pressure Hydraulic power transmission part 38 Stop pin 39 Through hole for stop pin 40 Round shaft 41 Boss 42 Bracket 43 Bracket 44 Plate 45 Boss

Claims (1)

(57) [Scope of request for utility model registration] 1. A screed device for an asphalt finisher comprising a main screed and a telescopic screed for evenly spreading and leveling an asphalt mixture, wherein a deflector is attached to a front portion of each of the main screed and the telescopic screed. Bracket 17 attached to
b, a rod 26b attached to the screed main body, the position of which is adjustable in the direction of the deflector, and one end of which is detachably connected to the bracket 17b, and a pair of brackets 42 mounted on the upper part of the deflector at regular intervals in the horizontal direction.
And a round bar 40 provided between the pair of brackets 42
And a bracket 43 attached to a boss 41 attached to the screed main body and connected to the upper mounting bracket 16b capable of adjusting the position in the deflector direction so as to be adjustable in the vertical direction. A screed device for an asphalt finisher, comprising: a boss 45 which is slidably fitted in an axial direction.