JPH0312167B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is suitable for shaping curved slopes, for example, when paving curved slopes such as automobile test courses, velodromes, velodromes, waterways, etc. This invention relates to a paving roadbed shaping device for sloped surfaces.

[Prior art]

For example, automobile test courses, velodromes, defense tracks, etc.
Conventionally, a backhoe or bulldozer was used to shape the subgrade for paving slopes such as waterways, but with this conventional technology, the precision of the finish and the amount of work per hour were limited. was greatly influenced by the skill of the operator. In particular, the pavement of automobile test courses has a special three-dimensional curved surface and requires high precision, so skilled operators must work carefully.
This resulted in extremely low work efficiency, long construction times, and high costs.

Generally, in order to pave slopes, it is known that rails of a certain length are connected with pins, and a hydraulic cylinder is provided for each rail to bend it. In the case of a special three-dimensional curved surface such as a course, it is difficult to pave accurately according to design values.

For example, Japanese Patent Publication No. 53-38530 discloses a technique for finishing a curved road surface using a ruler having a predetermined curved shape.

However, such known technology shapes the paved surface according to a ruler, and cannot shape the slope before paving into a predetermined shape.

[Problem to be solved]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a pavement roadbed shaping device that can shape a predetermined pavement roadbed by shaping a complex three-dimensional curved slope efficiently and with high precision.

[Means to solve problems]

According to the present invention, in a paving roadbed shaping device that shapes a curved and sloped slope when paving the slope, a main body frame provided in the longitudinal direction and a main body frame that moves along the main body frame are provided. A shaping means moving device is provided, comprising a bracket capable of moving, a shaping means provided on the bracket so as to be movable in the vertical direction within the vertical plane of the main body frame, and a cylinder for moving the shaping means, and further comprising:
A ruler setting device comprising a main frame arranged in the longitudinal direction, a plurality of power cylinders provided on the main frame, and a flexible ruler attached to each piston rod of the power cylinder and extending in the longitudinal direction. is provided adjacent to a shaping means moving device, each piston rod thereof being movable up and down in the vertical plane of the main frame, said shaping means moving device having sensing means for detecting the position of said ruler, and said shaping means moving device having sensing means for detecting the position of said ruler; It has a control device that operates a cylinder for moving the shaping means in response to a signal, and further has a control unit that stores the amount of curvature of the slope and controls the power cylinder.

[Function and effect of the invention]

Therefore, first, with a predetermined constant interval above the position of the slope to be shaped, using a ruler that matches the shape of the slope to be shaped as a reference, shape the area below the slope by a shaping means. Therefore, during shaping work, it is possible to create a correct curved surface according to the design value in the normal length direction of the slope. In this way, since the ruler is located a certain distance above the design surface, it will not interfere with the unshaped slope during excavation shaping. Next, the adjacent slope is shaped, but the curved slope is different from the previous slope. To this end, the ruler is modified to match the slope and the operation described above is repeated. In this way, the entire slope can be shaped to the designed value.

The ruler is made of flexible material and is attached to the main frame via a power cylinder with a plurality of piston rods. Therefore, if the power cylinder is controlled in accordance with the design value, the ruler will have a curved surface substantially in accordance with the design value due to its flexibility. Then, by detecting the position of this ruler and moving the shaping means up and down, the slope can be shaped correctly.

Therefore, according to the present invention, even a slope curved into any complicated shape can be set to the designed value by correcting the ruler, and since the shaping work is performed based on the ruler, the shaped slope can be set to the designed value. You can get a curved surface at a reasonable price.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a paving roadbed shaping device embodying the present invention. A shaping means moving device I and a ruler setting device are supported adjacent to each other. However, the shaping means moving device I and the ruler setting device may be placed adjacent to each other and moved by separate tractors.

FIG. 2 is a side view of the shaping means moving device I,
This shaping means moving device I has a main body frame 1, a bracket 2 is attached to this main body frame 1, and a supporting tractor, for example, a backhoe T, is attached to the main body frame 1.
installed on. A bracket 3 is attached to the main body frame 1 so as to be slidable along the main body frame 1, and a blade 5 and a screw cutter 6, which are vertically adjustable by a hydraulic cylinder 4, are attached to the bracket 3. The blade 5 and screw cutter 6 constitute a shaping means. The bracket 3 is connected to the main body frame 1 by a chain 8 driven by a drive motor 7.
It is now possible to move left and right in the drawing along the . Further, the main body frame 1 is entirely mounted on a sliding shaft 10 so that its position relative to the bracket 2 can be changed by a hydraulic cylinder 9. Further, wheels 12 whose height is adjustable by hydraulic cylinders 11 are attached to the lower end of the main body frame 1 on the left and right sides.

FIG. 3 shows a side view of one embodiment of the ruler setting device, and in this example it is shown that the ruler setting device is provided on a truck E that is separate from the tractor T.

In FIG. 3, a plurality of power cylinders 22 are attached to a main frame 21 at appropriate pitches P, and a bendable ruler or guide rail 24 is attached to the tip of each piston rod 23 of the power cylinders 22. . Further, at the upper end of the main frame 21, a running trolley E (third a
) is provided, and this truck E has a cylinder 28
The main frame 21 is connected by a pin P _i so that the angle θ of the main frame 21 can be changed freely. Also, the end of the main frame 21 has wheels 30 driven by a motor 29.
is installed. Further, the wheels 26 and 30 have a structure in which the height can be adjusted by cylinders 31 and 32, respectively. In addition, main frame 2
An angle sensor 33 is attached to a suitable position on the main frame 21 in order to detect the inclination angle θ of 1. By controlling the cylinder 31, the truck E
The height h of the ruler or guide rail 24 can be controlled at a constant distance t with respect to the designed slope C.
Open each cylinder 2 so that it has the corresponding shape.
2.

In the present invention, shaping work is carried out by vertically moving the shaping means, that is, the blade 5 and the screw cutter 6, following the ruler, that is, the guide rail 24. Referring to FIGS. 4 to 6, Its tracing operation and configuration will be explained.

4 and 5, a detection device 13 conventionally used in asphalt finishers is attached to one side of the blade 5 so that its height can be adjusted using a handle 14. This detection device 13 controls the cylinder 4 by sending a signal to a control device (not shown) so that the angle ψ of a sensor 15 rotatably attached thereto, and thus the height h, are constant. Since this sensor 15 is engaged with the ruler or guide rail 24, the blade 5
The position of can be correctly located with the designed slope position,
A curved surface corresponding to the guide rail 24, that is, a curved surface below the guide rail 24 by a distance t can be shaped.

In operation, first, the tractor T is placed in a predetermined position as shown in FIG. .
Next, the bracket 3 on which the blade 5 is suspended is moved toward the lower end b of the slope, and the hydraulic cylinder 4 is operated to adjust the tip of the blade 5 to a predetermined height for shaping.

Next, the ruler of the adjacent ruler setting device, that is, the guide rail 24, is set to have a predetermined curved surface as described later, and in this state, the detection sensor 13 is set as shown in FIGS. 4 to 6. sensor 1
5 on a ruler 24 set parallel to the shaping line C, and adjust the angle ψ of the sensor 15 using the handle 14 so that it becomes neutral. Next, while rotating the screw cutter 6 by a hydraulic motor (not shown), the bracket 3 on which the blade is suspended is moved along the main body frame 1 to the upper side a of the slope by a chain 8 driven by a drive motor 7. When it slides, the slope C is cut to a predetermined height (see Fig. 6), and at the same time, the dirt D is discharged to one side of the blade 5, and the road surface is automatically shaped into a shape that follows the preset ruler 24. Ru.

Note that the ruler 24 may be made of any material, such as a wooden mold frame or an iron pipe, or may be made of piano wire if the shaping surface is a straight line.

After the first part has been shaped in this way, the boom of the tractor T is raised, the shaping device is lifted from the ground, the machine is moved to the next lane, and the same operation is repeated. The guideline at this time may be the roadbed surface C that has already been shaped.

By the way, there is no problem if the shape of the roadbed surface C to be shaped is a straight line, but if it has a special curvature like an automobile test course, it takes time and effort to install the ruler 24. Therefore, we have introduced Section 7 regarding measures to save labor and speed up the installation of these guidelines.
This will be explained with reference to the figures.

The tips of the piston rods 23 of the plurality of power cylinders 22 attached to the main frame 21 are attached to be slidable on the guide rails 24.
One end of the guide rail 24 is attached to the main frame 21 by a pin 30. The control unit 31 consists of a storage device and a control device, M1 to Mn are electric motors, and E1 to En are rotary encoders for sensing the amount of protrusion of the piston rod 23.

The control unit 31 stores the amount of curvature of the slope C at each measurement point calculated in advance, and when the position of the measurement point is specified, the control unit 31 commands the amount of curvature at the position of each power cylinder 22. , rotates the electric motors M1 to Mn to extend and contract the power cylinder 22. The amount of expansion and contraction of the power cylinder is determined by rotary encoder E1~
En is detected, feedback is sent to the control unit, and it is automatically set to a pre-stored command value. In this way, the guide rail 24
is automatically controlled to a predetermined shape. Therefore, by using this guide rail 24, even a roadbed surface, that is, a slope surface having a complicated special curved surface can be shaped very easily and accurately.

In addition, this ruler setting device can also be effectively used for surveying and inspecting completed shapes during construction of test courses.

Now, as described above, once the shaping work in the vertical direction is completed, the lane moves to the next lane. For that lane, a different amount of curvature from the previous time is memorized, and the ruler 2
4 is corrected based on the memory, performs the above operation, and repeats the following in sequence. Then, the entire slope C can be shaped.

〔Effect of the invention〕

As described above, according to the present invention, not only straight slopes but also slopes with complex three-dimensional curves can be reshaped automatically and accurately by determining the amount of curvature for each lane in advance. It can be carried out.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing an example of a device embodying the present invention, Fig. 2 is a side view showing an example of a shaping means moving device embodying the present invention, and Fig. 3 is a ruler setting device embodying the present invention. FIG. 3a is a front view of the cart used in FIG. 3, FIG. 4 is a front view showing how the shaping means is operated according to the set ruler, and FIG. 5 is a front view of the cart used in FIG. 3. Figure 6 is a side view taken along line V-V in the figure, Figure 6 is a perspective view showing the screw cutter removing excavated soil, Figure 7 is an explanatory diagram explaining the ruler setting work of the ruler setting device. be. I... Shaping means moving device,... Ruler setting device, C... Slope, 1... Body frame, 3... Bracket, 5... Blade, 6... Screw cutter, 4... Cylinder, 21... ...Main frame, 22...Power cylinder, 23...Piston rod, 24...Guide rail (ruler), 13...
...Detection device (detection means), 15...Sensor.

Claims (1)

[Claims] 1 When paving a curved and sloping slope,
A roadbed shaping device for shaping the slope includes a main body frame provided in the longitudinal direction, a bracket movable along the main body frame,
A shaping means moving device is provided, which includes a shaping means provided on a bracket so as to be movable in the vertical direction within the vertical plane of the main body frame, and a cylinder for moving the shaping means; A ruler setting device including a main frame, a plurality of power cylinders provided on the main frame, and a flexible ruler attached to each piston rod of the power cylinders and extending in the longitudinal direction is adjacent to the shaping means moving device. each piston rod is movable up and down within the vertical plane of the main frame, and the shaping means moving device has a detection means for detecting the position of the ruler, and moves the shaping means in response to a signal from the detection means. 1. A roadbed shaping device for paving a sloped surface, comprising: a control device for operating a cylinder to control the power cylinder, and further comprising a control unit that stores the amount of curvature of the slope and controls the power cylinder.