JPS6022124B2 - automatic compaction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compaction device capable of compacting a road surface having a curved cross section, such as a bend in a high-speed automobile test track.

Vertical compaction is an important process in the construction of asphalt pavement, and if this is not done properly, the finished pavement surface will be uneven and the desired road surface will not be obtained.

Compaction work is particularly difficult when forming a road surface with a complex curve. For example, a curved portion of an automobile high-speed test track is composed of a straight section 1, a gradual curve section 2, and a semicircular curve section 3, as shown in Fig. 1a. b, c, d, e of this course,
The cross section of portion f is a curve as shown in FIG. 1 b, c, d, e, and f. In particular, the transverse upper surface of the semicircular curved portion 3 has a cubic curve as a whole, with sections A, B, C, D, and E having different curvatures, as shown in FIG. 1b. Since the vehicles under test constantly drive at high speeds on the above-mentioned track, it is necessary to have curved sections with slopes of a predetermined size, and highly accurate compaction work is required. By the way, compaction machines such as road rollers were initially used for the compaction work, but the outer edges of the wheels formed large steps on the road surface, making it impossible to compact the road into a smooth, predetermined curved surface.

For this reason, as shown in FIG. 1g, a rolling device has been developed in which rolling wheels h are inclined at a predetermined angle a according to the curved surface of the road surface. However, since this device requires the driver to adjust the wheel angle 8, there is a problem in that finishing accuracy is poor and work efficiency cannot be improved. In view of the above-mentioned circumstances, the present invention has been developed for rolling compaction, which detects in advance the road surface position that the rolling compaction wheels pass and, based on this detection, travels and compacts the wheels while automatically matching the detected road surface. The purpose of this device is to provide a device in which a plurality of rolling wheels each having a rotation axis in the left and right direction are arranged side by side in the left and right direction, and while traveling on the road surface, the position of the road surface through which each wheel passes is determined Each wheel is detected and, based on this detection, the vertical angle of the rotational axis of each wheel is adjusted. The present invention will be explained below with reference to the drawings.

2 to 6 show an embodiment of the rolling compaction equipment according to the present invention, and reference numeral 11 in FIG. 2 indicates a vehicle body.

At the front lower part of the vehicle body 11, as shown in FIG. 3, a front wheel portion 13 is provided with three iron rollers 13a, 13b, 13c each having a rotation axis 12a, 12b, 12c extending in the left-right direction. installed. Also, the above car body 1
A rear wheel portion 14 is attached to the rear lower portion of the vehicle 1. Three sets of rubber tires 14a, 14b, and 14c each having a rotation axis extending in the left-right direction are attached to the rear wheel portion 14. The fore and aft parts 13 and 14 have the same structure except that the wheels are tires or iron rollers, so the structure will be explained based on the front wheel part 13. At the front lower part of the vehicle body 11, as shown in FIG.
The rectangular outer frame 15 of the front wheel portion 13 shown in FIG. 4 is fixed horizontally. This outer frame 15
A support arm 1 is provided at the center of the inner side of the outer frame 15 at the center of the sides 15a, 15a extending in the left-right direction of the outer frame 15.
A rectangular inner fixed frame 17 fixed by 6... is installed horizontally. Both ends of sides 17a, 17a extending in the left-right direction of the inner fixed frame 17 protrude left and right. Also, the inner fixed frame 17
Inside the left and right outer frames 15, rectangular left and right inner movable frames 18 and 19 are provided. Sides 18a, 18a, 19a, 19a of the left and right inner movable frames 18, 19 extending in the left-right direction protrude from the inner fixed frame 17 side, and the protruding portions of the sides 17a, 17a and the connecting pin 20a in the front-rear direction . . . are rotatably connected to form a connecting portion 20 . Furthermore, one end of the drive frame 21 is fixed to the upper center of the sides 18b, 19b, which are closer to the outer frame 15, among the sides 18b, 18b, 19b, 19b extending in the front-rear direction of the inner frames 18, 19. The other aspect of the drive frame 21 is a side 15 extending in the front-rear direction of the outer frame 15.
b, 15b. This drive frame 2
Between the other ends of 1 and 21 and the central portions of the sides 15b and 15b, extendable hydraulic sills 22 and 22 are attached by locking pins 22a facing in the front-rear direction. . Furthermore, near both ends of the sides 18b and 19b to which the drive frame 21 is attached, brackets 23 are attached that protrude in the direction of the sides 15b and 15b. The ends of the brackets 23 are sandwiched between guides 24 attached to the inside of the side 15b so as to extend in the vertical direction. The above-mentioned inner fixed frame 17 and left and right inner movable frames 18, 19
Inside the left and right rotational axes 12a, 12b, 12
Iron loafs 13a, 13b, 13c with c are attached.

On the right or left side of each of these rollers 13a, 13b, 13c are sprockets 25a, 25b. 25c is installed. In addition, the inner frames 18, 17, 1
A driving force transmission device M for rotationally driving the rollers 13a, 13b, 13c is attached along one of the sides 18a, 17a, 19a extending left and right of the roller 9.

This transmission device M is configured as follows. That is, the main bearing 2 supporting the shaft along the side 17a is located on the side 17a.
6 and 26 are fixed, and a main sprocket 27 is provided between these main bearings 26 and 26 to receive power from the outside to the front wheel portion 13. Further, a sprocket 29 is provided adjacent to the main bearing 26. This sprocket 2
9 is a loaf chain (not shown) and a sprocket 25b.
The roller 13b is driven via the roller 13b. Further, bearings 28, 28 are fixed to the sides 18a, 19a. The sprocket 29 is located close to these bearings 28, 28.
, 29 are provided. This sprocket 29, 29
are a mouth ratchet (not shown), a sprocket 25a,
The rollers 13a and 13c are driven via the roller 25c. Further, between the bearings 28, 28 and the main bearing 26, a spline shaft 30 and a retractable universal joint 31 provided with a hole 31a are arranged and connected by a coupling 32. Further, as shown in FIG. 5 as a representative of the roller 3a portion, the above-mentioned sides 18a, 183, 19a,
On the top surface of 19a, automatic adjuster G...sensor 4
0.... is installed.

This sensor 40 is provided with a sensor arm 41. Further, a ski guide 42 is provided on the lower surface of the lower sides 18a, 19a of the sensor 40 and extends downward. This ski guide 42 has skis 4 at the bottom end.
A slider 44 having a slider 44 is mounted so as to be vertically movable along the guide 42. The lower end of a rod 45 is attached to this slider 44, and the upper end of this rod 45 is
It is connected to the tip of the sensor arm 41. Further, a motor 46 is provided above the guide 42 . A male screw 47 is attached to the motor 46 and extends downward. This male screw 47 is screwed together with the female screw of the slider 44, and the ski 43 can be moved up and down via the slider 44 by rotating the motor 46 in the forward and reverse directions using a switch (not shown). Further, when the roller 3a moves forward, the road surface is detected by the ski 43 in front of the roller 13a, and the output signal from the sensor 40 is used to control the hydraulic cylinder via a hydraulic control device or an electric control device (both not shown). 22 is expanded and contracted, and when the roller 13a reaches the road surface detected by the ski 43, the lower surface of the roller 13a is controlled to the height of the detected road surface.

Further, when moving forward or backward, the hydraulic cylinder 22 is operated by the output of the sensor 40 in the direction of movement of the roller 3a, and the sensor 40 on the opposite side to the direction of movement is configured not to operate. Next, a method of operating the rolling compaction device configured as described above will be explained.

First, the skis 43 and 43 attached to the front and rear sections 13 and 14
. . . Iron rollers 13a, 13c, rubber tires 14a, . Match the bottom surface of 14c.

In order to match the lower surfaces, the position of the lower surface of the ski 43 is adjusted by rotating the motor 46 in the forward and reverse directions using a switch (not shown) and moving the slider 44 up and down via the male screw 47. Next, the driver drives the device, paying attention only to the position of the iron rollers 13b.

In this case, when the slope of the upper cross-sectional surface of the road surface changes, the fifth
As shown in the figure, the road surface leveled by the asphalt finisher changes moment by moment to a road surface K shown by a two-dot chain line. As a result, the ski 43 of the automatic adjustment device G slides on the road surface and rises to the position indicated by the two-dot chain line by a distance h, and the slider 44,
The sensor arm 41 is rotated via the rod 45 to the position indicated by the two-dot chain line. This rotation causes the sensor 40 to generate an output signal, which activates the hydraulic cylinder 22 via a hydraulic control or electric control device (both not shown) to push the drive frame 21 up to the position indicated by the two-dot chain line. The inner movable frame 13a is centered around the connecting pin 20a,
The roller 13a rotates, and the roller 13a becomes the position indicated by the two-dot chain line. At this time, when the following roller reaches the detection point of the ski 43,
Since the lower surface of the roller 13a is located at the position detected by the ski 43, the leveling surface can be accurately followed and the cotton can be compacted. Further, as shown in Fig. 6, when the rolling device moves in the A direction, the automatic regulator ○, operates, and G2 does not operate, and when it moves towards the mouth, G2 operates and G, Since it is switched so that it does not operate, vertical consolidation can be performed with the same accuracy whether the vehicle is traveling in either direction. Note that although a rubber tire is attached to the rear wheel portion 14, both the front and rear wheels 13 and 14 may be made of iron loaf or rubber tires.

Further, since the skis 43 only need to be in contact with the road surface and their position can be detected, the purpose can be achieved even if iron wheels, pneumatic tires, etc. are used instead of skis. As described above, the automatic rolling device according to the present invention detects a sloped road surface having a curved surface, and automatically moves the roller position at the detected location while accurately and automatically following the detected value. Therefore, the driver can compact the road surface efficiently and accurately without having to worry about anything.

[Brief explanation of the drawing]

Figure 1a is a plan view of the bending part of the automobile high-speed test track; Figures 1b, c, d, e, and f are cross-sectional views of each part of Figure 1a;
Fig. 1g is a front view of a conventional rolling compaction device, and Figs. 2 to 6 show an embodiment of an automatic rolling compaction device according to the present invention, and Fig. 2 is a perspective view of the device. Figure 3 is a partial cross-sectional plan view of the front wheel portion of the device, Figure 4 is a side view taken along the W-W arrow in Figure 3, Figure 5 is a diagram showing the automatic adjuster attached to the inner movable frame, Figure 6 is a side view of the device. 11...Car body, 12a, 12b, 12c...
・Rotation axis of iron roller, 13...Front wheel part, 1
3a, 13b, 13c... Iron rollers, 14...
...Rear wheel portion, 14a, 14b, 14c...Rubber tires, 15...Outside frame, 15a...Side in left and right direction, 15b...Side in front and rear direction, 16...・
...Support arm, 17...Inner fixed frame,
17a... Sides in the left and right direction, 17b... Sides in the front and rear direction, 18... Left inner movable frame, 18a...
... Sides in the left and right direction, 18b ... Sides in the front and back direction, 19 ... Right inner movable frame, 19a ... Sides in the left and right direction, 19b ... Sides in the front and back direction Side, 20・
...Connection part, 20a...Connection pin, 21
... Drive frame, 22 ... Hydraulic cylinder, 22a ... Locking pin, 23 ... Bracket, 24 ... Guide, 25a, 25b, 25c ...
Sprocket, 26...Main bearing, 27...
...Main sprocket, 28...Bearing, 29...
... Sprocket, 30 ... Spline shaft, 3
1... Universal joint, 31a... Long hole, 32...
・Coupling, 40...Sensor, 41...Sensor arm, 42...Ski guide, 43...Ski, 44...Slider, 45...Rod, 46...
・...Motor, 47..." Male thread, G...Automatic adjuster, G,...Front automatic adjuster, G2...
Rear automatic adjuster, day, K...Road surface, M...
Drive force transmission device. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A plurality of wheels having rotational axes oriented in the left-right direction and arranged in the left-right direction, and a mechanism that changes the vertical angle of the axis of one of these wheels with respect to the axis of another wheel; a control mechanism that detects in advance the road surface position through which the wheel whose axis is changed while traveling on the road surface, and adjusts the angle formed by the axis of each wheel based on this detection. Automatic compaction equipment.