JPS6342042B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a curved road surface finishing device having an automatic control device and used for finishing curved road surfaces such as asphalt paved roads such as automobile high-speed proving grounds and automobile racetracks while traveling. be.

Next, the present invention will be explained in detail using illustrated examples.

The drawing shows one embodiment of the present invention, and shows support beams 14 on both left and right sides of a traveling vehicle body 6 on which a traveling drive device, a generator, etc. are mounted.
An intermediate portion of the support arm 15 is pivotally connected to a support shaft 16 extending in the left-right direction, and the support arm 15 is
The front end of the support arm 1 is connected to the support beam 14 via a hydraulic lifting jack 17, and the support arm 1
The front part of the support frame 7 is pivotally attached to the rear part of the support frame 5 by a pivot shaft 18 extending in the left-right direction. The middle part of the vertical screw rod 20 to which the handle 19 is fixed at the upper part is screwed into a female screw fitting 21 pivotally attached to the rear end of the support arm 15, and the lower end of the vertical screw rod 20 is
A connecting fitting 57 pivotally attached to the rear part of the support frame 7
When the vertical screw rod 20 is rotated, the support frame 7 is rotated about the pivot 18, and the angle of the support frame 7 with respect to the horizontal plane is adjusted.

A large number of rigid holding frames 1 are arranged in series in the left-right direction, and the lower ends of adjacent rigid holding frames 1 are arranged in series in the left-right direction. A box-shaped holding member 3 is attached to the upper part of each rigid holding frame 1 except for the rigid holding frame 1 at one end by a pivot shaft 23 extending in the front-rear direction. A pair of curvature adjustment threaded rods 2 are pivotally attached to each holding member 3 and are rotatably attached via bearings 24, extending in the left-right direction and spaced apart in the front-rear direction. A female screw member 4 screwed onto a screw rod 2 attached to one matching rigid holding frame is pivotally connected to the other adjacent rigid holding frame by a pivot shaft 25 extending in the front-rear direction,
a pivot shaft 2 connecting the rigid holding frame 1 and its lower part;
2, a holding member 3 that connects the upper part of each rigid holding frame 1, a screw rod 2, a female screw member 4, etc., constitute a refractive holding beam 5 that can be bent in the vertical direction.

Elongated holes 27 extending in the left-right direction are provided on both left and right sides of the lower horizontal member 26 at the front and rear parts of each rigid holding frame 1, and extend in the left-right direction along the lower surface of the refractive holding beam 5. A large number of support members 28 made of countersunk bolts are arranged at intervals in the left-right direction at the front and rear parts of the flexible screed plate 8 made of a steel plate, and the lower end of each support member 28 is connected to the screed plate 8. The supporting members 28 are fitted into the dish-shaped through holes and fixed by welding, and each supporting member 28 is fitted into the elongated hole 27 of the lower horizontal member 26.

An intermediate portion of a support shaft 29 extending in the front-rear direction is fitted into the upper part of the support member 28 and fixed unrotatably by a fixing member 30 such as a dowel pin, and a tightening member is provided at the upper end of the support member 28. A nut 31 is screwed into the support shaft 29, and support rollers 32, which are placed on the upper surface of the horizontal member 26, are rotatably attached to both ends of the support shaft 29.

Support pins 33 extending in the front-rear direction are fixed to the front and rear portions on both left and right sides of the refractive holding beam 5, and the support pins 33 are fitted into elongated holes 34 provided in the support frame 7 and extending in the left-right direction. and a support stand 35 arranged at the rear upper part of the vehicle body 6.
is fixed to the vehicle body 6, and a large number of drive devices 9 corresponding to each of the holding members 3 are fixed to the support stand 35, and the drive devices 9 include a main electric motor 10 and a continuously variable transmission connected thereto. 12 and a gear ratio adjusting electric motor 11 connected to the continuously variable transmission 12. A gear box 36 located above each of the holding members 3 is fixed to the support base 35, and a vertical sleeve 38 provided with a vertical bevel gear 37 is rotatable via a bearing 39 in the rotary gear box 36. The output shaft 40 of the drive device 9 is attached to
A drive bevel gear 42 is supported by the gear box 36 via a bearing 41 and further fixed to the output shaft 40.
is meshed with the vertical bevel gear 37.

The upper part of the refractive vertical shaft 44, which has two universal joints 43 in the middle, is slidably and rotatably fitted into the vertical sleeve 38 via a known ball spline 45. The lower end of the refractive vertical shaft 44 is slidably and unrotatably fitted into a drive spiral gear 46 disposed within the holding member 3 via a ball spline 47, and furthermore, the drive spiral gear 46 is rotatably attached to the holding member 3 via a bearing 48, and vertical spiral gears 49 fixed to the pair of screw rods 2 are meshed with both sides of the driving spiral gear 46 in the diametrical direction. When the drive device 9 is operated in the forward or reverse direction, the drive device 9 rotates the drive bevel gear 42 and the vertical bevel gear 3.
7. The screw rod 2 is rotated forward or backward via the refractive vertical shaft 44, the driving spiral gear 46, and the vertical spiral gear 49, so that the adjacent rigid holding frames 1
are rotated relatively toward or away from each other about the pivot 22, thus adjusting the curvature of the refractive retaining beam 5 and the flexible screed plate 8 mounted below it. In this case, the axis of the driving spiral gear 46 is inclined relative to the axis of the vertical sleeve 38 and the angle of inclination changes, but since the refractive vertical shaft 44 is provided with two universal joints 43, , power can be transmitted without any trouble.

By setting the rotation direction and rotation speed of all the drive devices 9 to be the same, the curvature of the flexible screed plate 8 can be changed almost uniformly over its entire length, and the rotation direction and rotation speed of the large number of drive devices 9 can be changed almost uniformly over its entire length. By relatively changing the rotation speed, etc., the curvature of the flexible screed plate 8 can be adjusted so as to vary along its longitudinal direction.

In FIG. 1, 62 is a spiral dispersing member rotated by a drive device.

A non-ferrous metal impeller 51 having a large number of protrusions 50 arranged at a constant pitch is fixed to the output shaft 40 of each drive device 9.
A non-contact type output shaft rotation speed detection sensor 52 that passes through a protrusion 50 around the continuously variable transmission 1 is connected to the continuously variable transmission 1.
2, and each continuously variable transmission 1
A non-ferrous metal impeller 55 having a large number of protrusions 54 arranged at a constant pitch is fixed to the reduction ratio adjusting shaft 53 of No. The contact type adjustment shaft rotation speed detection sensor 56 is fixed to the casing of the continuously variable transmission 12 or the casing of the electric motor 11 for speed ratio adjustment.

An upper limit switch LS-U and a lower limit switch LS-D are arranged on the arm 63 fixed to each holding member 3 at intervals in the left-right direction.
is fixed, and a striker 64 located between the limit switches is fixed to the female screw member 4, and the forward rotation of the drive device 9 causes the flexible screed plate 8 at the lower part of the adjacent rigid holding frame 1 to be fixed.
is refracted so that the middle part of the
4, the lower limit switch LS-D is operated, and the signal from the lower limit switch stops the forward rotation of the drive device 9, and the reverse rotation of the drive device 9 causes the flexible screed 8 at the bottom of the adjacent rigid holding frame 1 to be stopped. When the refraction angle of
LS-U is operated, and the reverse rotation of the drive device 9 is stopped by the signal from the upper limit switch.

The continuously variable transmission 12 having the electric motor 11 for adjusting the gear ratio has a switch operation lever (not shown) rotated by a reduction ratio adjustment shaft 53 via the reduction mechanism, and a maximum speed operated by the lever. It incorporates a limit switch LS-H and a lowest speed limit switch LS-L, and when the reduction ratio adjustment shaft 53 is rotated in the forward direction to the maximum speed state via the reduction mechanism due to the forward rotation of the speed ratio adjustment electric motor 11, the lever is activated. When the maximum speed limit switch LS-H is operated, the forward rotation of the gear ratio adjusting electric motor 11 is stopped by the signal from the maximum speed limit switch, and the rotation speed of the output shaft 40 is regulated to a predetermined maximum speed.

Further, when the speed reduction ratio adjustment shaft 53 is reversely rotated to the lowest speed state via the speed reduction mechanism due to the reverse rotation of the speed ratio adjustment electric motor 11, the lowest speed limit switch LS-L is operated by the lever, and the lowest speed The reverse rotation of the gear ratio adjusting electric motor 11 is stopped by the signal from the limit switch, and the output shaft 4
The rotation speed of 0 is regulated to a predetermined minimum speed.

Sensors 52, 56 and limit switches LS-U, LS-D, LS- attached to each drive device 9
Detection control units 65A to 65 lower such as H, LS-L, etc.
Control circuit 6 for switchboard 66 and driver section 67
Computer (microcomputer) 1 with an interface circuit via 8A to 68F
A distance measuring sensor 59 which is connected to the computer 13 and measures the travel distance of the curved road surface finishing device is connected to the computer 13 via the distance counter 69 of the driver section 67, and is connected to the computer 13 as shown in FIG.
~68F configuration is shown. As the distance measuring sensor 59, for example, a sensor consisting of a roller rolling on a paved surface and a device for measuring the number of rotations of the roller is used, but since this distance measuring sensor is well known, the structure thereof will be explained below. Omitted.

The computer 13 has completed the rotation control calculation for obtaining a predetermined curvature of the flexible screed plate 8 according to the travel distance from the starting position 60 of the curved road surface finishing device, and when the curved road surface finishing device 61 starts. , the computer 13 enters a state of waiting for distance input.

When the curved road finishing device 61 travels in the direction of the arrow from the starting position 60 shown in FIG. be done. The computer 13 controls the control circuit 68A according to the mileage.
A driving ON signal or a stopping OFF signal is sent to the main electric motor 10 and the gear ratio adjusting electric motor 11 through 68F, and the output shaft 40 of a predetermined drive device 9 is rotated forward or reverse at a predetermined speed, and the flexible The screed plate 8 is automatically adjusted to a predetermined curvature.

The detection signals (pulse signals) from the output shaft rotational speed detection sensor 52 and the adjustment shaft rotational speed detection sensor 56 are sent to the computer 13 via control circuits 68A to 68F, and the screed plate 8 reaches a predetermined distance over a predetermined traveling distance. The rotation of the output shaft 40 is accurately controlled to achieve the curvature.

When practicing the invention, the refractive retaining beam 5
One end is connected to the support frame 47 by a support pin so as to be rotatable in the vertical direction, and a support pin 33 fixed to the other end of the refractive holding beam 5 is inserted into the elongated hole 34 of the support frame 7. Alternatively, an elongated hole may be provided at the end of the refractive holding beam 5, and a support pin fixed to the support frame 7 may be inserted into the elongated hole.

A spring pin may be used as the fixture 30, and the tightening nut 31 may be omitted. Furthermore, in the embodiment described above, the roller support plate is fixed to the upper surface of the lower horizontal frame member of the rigid holding frame 1 by welding to constitute the lower horizontal member 26, but the roller support plate is omitted and the lower horizontal frame member is The support roller 32 may be placed directly on the upper surface of the material.

As the universal joint 43, any conventionally known structure can be used, so a detailed explanation of its structure will be omitted.

According to this invention, the lower portions of a large number of rigid holding frames 1 arranged in series in the left-right direction are connected in a vertically bendable manner, and the upper portions of adjacent rigid holding frames 1 each extend in the left-right direction. A curvature adjustment screw rod 2, a holding member 3 attached to the upper part of one adjacent rigid holding frame 1 and rotatably holding the screw rod 2, and a holding member 3 attached to the upper part of the other adjacent rigid holding frame 1. The refractive holding beam 5 is connected to the screw rod 2 via the female screw member 4 screwed together, and both ends of the refractive holding beam 5 connect to a support frame provided at the rear of the vehicle body 6. The screw rods 2 installed on the refractive holding beam 5 and attached to each holding member 3 are configured to be rotated by independent curvature adjustment drive devices 9, so that the screw rods 2 installed on the refractive holding beam 5 and the screw rods 2 attached to each holding member 3 are rotated by independent curvature adjustment drive devices 9. Each curvature adjustment drive device 9, which can adjust any portion of the flexible screed plate 8 in the left-right direction to any curvature, and which can independently drive the threaded rod 2 of each holding member 3, is equipped with a main electric motor. 10 and a continuously variable transmission 12 having a gear ratio adjusting electric motor 11, and the main electric motor 10 and the gear ratio adjusting electric motor 11 in each drive device 9 are configured to adjust a predetermined curvature according to the traveling distance of the curved road surface finishing device. The refractive holding beam 5 and the flexible screed plate 8 are automatically controlled to a predetermined curvature according to the traveling distance of the curved road surface finishing device. Effects such as being able to be adjusted can be obtained.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of a curved road surface finishing device, Fig. 2 is a rear view thereof, Fig. 3 is a plan view thereof, and Fig. 4 is a refractive property maintenance device. 5 is a plan view thereof, FIG. 6 is a transverse plan view showing the attachment of the flexible screed plate to the refractive retaining beam, and FIG. 7 is a rear view showing a portion of the beam and the flexible screed plate. 8 is a longitudinal sectional view showing the transmission mechanism from the refractive vertical shaft to the curvature adjustment screw rod, FIG. 9 is a cross-sectional plan view thereof, and FIG. 10 is from the output shaft of the drive device. A vertical sectional side view showing the transmission mechanism to the refractive vertical axis, FIG. 11 is a side view showing the output shaft rotation speed detection section, FIG. 12 is a front view thereof, and FIG. 13 is a side view showing the adjustment shaft rotation speed detection section. Figure 14 is its front view, Figure 15 is a plan view showing the relationship between the paved road and the curved road finishing device, Figure 16 is a block diagram of the automatic control circuit by computer, and Figure 17 is the automatic control circuit. FIG. In the figure, 1 is a rigid holding frame, 2 is a screw rod for adjusting curvature, 3 is a holding member, 4 is a female screw member, 5 is a refractive holding beam, 6 is a traveling vehicle body, 7 is a support frame, and 8 is a flexible screed plate. , 9 is a curvature adjustment drive device, 10 is a main electric motor, 11 is a gear ratio adjustment electric motor, 12 is a continuously variable transmission, 13 is a computer, 15 is a support arm, 17 is a hydraulic lifting jack, and 20 is a vertical screw rod. , 21 is a female screw fitting, 22 is a pivot, 23 and 25 are pivots, 27 is a long hole, 28
32 is a support member, 32 is a support roller, 33 is a support pin, 34 is an elongated hole, 35 is a support stand, 37 is a driven bevel gear, 38 is a vertical sleeve, 40 is an output shaft, 42 is a drive bevel gear, 43 is a universal gear. Into, 44
is a refractive vertical axis, 46 is a driving spiral gear, 49
51 is a driven spiral gear, 51 is an impeller, 52 is a sensor for detecting the rotation speed of the output shaft, 53 is a reduction ratio adjustment shaft, 55 is an impeller, 56 is a sensor for detecting the rotation speed of the adjustment shaft, 57 is an interface circuit, and 58 is a sensor for detecting the rotation speed of the adjustment shaft. The driver unit 59 is a distance measuring sensor.

Claims (1)

[Claims] 1. The lower parts of a large number of rigid holding frames 1 arranged in series in the left-right direction are connected so as to be bendable in the vertical direction, and the upper parts of adjacent rigid holding frames 1 each have a curvature adjustment screw rod extending in the left-right direction. 2, and a holding member 3 that is attached to the upper part of one of the adjacent rigid holding frames 1 and rotatably holds the screw rod 2.
and a female screw member 4 attached to the upper part of the other adjacent rigid holding frame 1 and screwed into the screw rod 2.
are connected to form a refractive holding beam 5. Both ends of the refractive holding beam 5 are installed on a support frame 7 provided at the rear of the vehicle body 6, and the refractive holding beam 5 is A flexible screed plate 8 is attached to the lower part, and each of the holding members 3
Each curvature adjustment drive device 9 that can independently drive the screw rod 2 includes a main electric motor 10 and a gear ratio adjustment electric motor 1.
1, and a computer 1 that controls the main motor 10 and gear ratio adjusting motor 11 in each drive device 9 to a predetermined curvature according to the travel distance of the curved road surface finishing device.
3. A curved road surface finishing device having an automatic control device, characterized in that it is configured to be automatically controlled by.