JPH0526085Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a support device for a slope paving machine, such as an asphalt finisher, a steel roller, a tire roller, etc., for supporting a slope paving machine.

[Prior Art] When paving a slope, for example, when paving a test course for automobiles, asphalt is laid down with an asphalt finisher and then compacted with steel rollers, tire rollers, etc., as is well known. For example, as shown in Fig. 1, wires W,
Asphalt finishers C, steel rollers D, tire rollers E, etc. supported through... run on a slope F to pave the slope, that is, the slope. In the diagram, T indicates a dump truck, and R
is an asphalt concrete interceptor.

By the way, when supporting these paving machines with wires on slopes, if a suitable support method is not applied, the paved surface may become uneven and construction quality may deteriorate, but sufficient measures have not been taken in the past. Nakatsuta. For example, when a paver M is supported on a slope F by a wire W provided on an anchor wheel as shown in Fig. 2, the fixed point P of the wire is offset l from the position of the center of gravity G of the paver M. As a result, a moment M=T·l was generated in the paving machine M, and uneven loads were generated on the wheels H, H, which adversely affected the finish of the pavement. In addition, as shown in Fig. 3, the fixed point P of the wire
is on the extension line of the center of gravity G, no problem will occur if the support direction of the wire W matches the angle θ formed by the slope F, but if the support angle α of the wire occurs during running, the component force J =T・sinα occurs. When these phenomena occur, the loads on the left and right wheels H, H of the paving machine M become unbalanced, and the lighter wheel slips, disturbing the paved surface, or in extreme cases, making it impossible to drive, reducing work efficiency. Not only did this cause a decline in the quality of the pavement, but it also had a negative impact on the quality of the pavement. Of course, if the angle of the slope is constant, such as on an embankment, these problems can be avoided by setting the supporting direction of the wire in advance. Since the slope F gradually changes depending on the traveling position of the paving machine M and the traveling distance, the above-mentioned problems will occur unless some countermeasure is taken.

An asphalt finish for paving slopes is known and disclosed in Japanese Patent Publication No. 58323/1983. However, such known technology automatically obtains the optimal inclination angle with respect to the traveling direction according to the cross slope of the roadbed, and cannot equalize the load generated on the left and right wheels of the paver on a curved slope.

Furthermore, Japanese Patent Application Laid-open No. 60-95006 discloses a technique in which a rolling device and a tractor are connected not by wire but by a cylindrical attachment and a push-up support device, and further connected by a wire rope via a piston device. has been done. However, such known technology prevents the compaction device and the tractor from deviating from the same trajectory when changing course, but does not equalize the loads generated on the left and right wheels.

[Problem to be Solved] Therefore, the purpose of the present invention is to make the ground pressure generated on the left and right wheels of a paving machine substantially constant at all times even when the angle of inclination changes on a slope such as an automobile test course. The object of the present invention is to provide a support device for a slope paving machine that can produce high-quality pavement.

[Means for Solving the Problems] According to the present invention, in a support device for a slope paver for supporting a slope paver by a wire provided on an anchor car B, the slope paver M is equipped with a laser beam. A light beam projector 30 is provided, and the anchor car B has a winch 9 for feeding out and winding the wire W, an arm 7 swingably mounted on a fulcrum 20, and a winch 9 rotatably mounted on the fulcrum 20 of the arm 7. The wire W has a guide sheave 5 rotatably provided at the tip of an arm 7, and a hydraulic piston cylinder unit 10 for adjusting the swing angle of the arm 7.
The arm 7 is fixed to the paving machine M by being fixed to the paving machine M through a guide sheave 5 provided at the tip and a guide sheave 4 provided at the tip.
Further, when the position of the laser beam received by the light receiver 31 deviates from a preset position, the hydraulic piston cylinder unit 10 is actuated to remove the wire W. It has control means for maintaining the angle at a set value.

[Description of Functions and Effects] Therefore, a slope paving machine such as an asphalt finisher, a steel roller, or a tire roller is supported on a slope by a wire provided on an anchor car running on the top. Then, while the anchor vehicle and the paving machine are self-propelled, the slope is paved in the same way as the conventional method.

At that time, the anchor car is equipped with a receiver that receives the laser emitted from the slope paving machine, so if there is a change in the position of the pavement, for example, the distance from the top or the angle of inclination due to a change in curvature, the light reception will be interrupted. The position of the laser that the device receives deviates from the preset position.

This shift in the light receiving position of the light receiver means that the position angle of the light receiver provided on the anchor car traveling at the top does not change, but the light projecting direction of the light projector changes. Therefore, when the control means operates the hydraulic piston cylinder unit to rotate the arm, the receiver receives the laser beam at its preset position and the wire becomes parallel to the laser beam.

In this way, even if the slope angle of the slope changes,
The wires that support the paver follow changes in angle, and as a result, the ground pressure of the paver is always constant, resulting in high-quality paving.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 5, 6, and 7.

Now, referring to FIGS. 5 and 6, two wires W, W are let out from the anchor car B running on the top A, and support the slope paving machine M on the slope F. It is understood that there is.

The slope paving machine M has wheels or wheels H, H, similar to those described in connection with FIGS.
A vehicle body is mounted thereon, and wires W, W are fixed at a point P on an extension of the center of gravity G. Therefore, when the wires W, W are supported or pulled in the same direction as the inclination angle θ, approximately equal loads will be applied to the left and right wheels H, H. The paving machine M is provided with a light projector 30 that emits a laser beam. The projecting angle of this projector can be adjusted. In other words, the center of gravity line G passing through the center of gravity of the paving machine M,
The laser L is projected at a substantially right angle to the laser beam L, but the projection angle can be adjusted.

The main body of the anchor vehicle B is composed of crawlers 3, 3 that can be steered independently, and a main frame 1 on these crawlers, and a driver's seat 2, a wire feeding device, and other hydraulic pressure generating devices are mounted on the main frame. etc. are installed. The wire feeding device includes a winch 9 that feeds out or winds the wire, a pair of arms 7, 7 that are swingably provided at a fulcrum 20 at a predetermined interval, and that are rotatable at the fulcrum 20 and the tip of the arms. It consists of guide sheaves 5, 5, 4, 4 provided in the arms 7, 4, and hydraulic piston cylinder units 10, 10 for adjusting the angles or heights of the arms 7, 7. The wires W, W come out from the winch 9, are wrapped around the guide sheaves 5, 4, and are fixed to the paving machine M. The arm, guide sheave, hydraulic piston cylinder unit, etc. constitute the height adjustment means.

The arms 7, 7 are connected at their distal ends by a member 6, as shown in FIG. Therefore, the arms will swing synchronously. Therefore, it is possible to provide only one winch and one hydraulic piston cylinder unit.

A light receiver 31 for receiving laser light is provided at a substantially intermediate position of the member 6. As shown in FIG. 5, the light receiver 31 can adjust its light receiving angle so that it receives the laser L at right angles. The conventional light receiver 31 can be used as is, but as shown in FIG. 7, for example, when receiving light at 0 point, it is the set point, and when receiving light at plus 1 or minus 1, it is 1 point upward from the set point. Or, it is determined that the tilt angle has changed by 1 downward, and the value is +1 or -1.
It is also possible to adjust the payout height of the wire by driving the hydraulic piston cylinder unit 10 to change the angle of inclination of the arms 7, 7. It can be adjusted digitally in this way, or even analogously. In any case, if the light receiving position of the light receiver 31 deviates from the set point, the control means issues this deviation signal to the hydraulic piston cylinder unit to cause the unit to expand or contract.

Next, the operation of the above embodiment will be explained with reference to FIG.

First, the hydraulic piston cylinder unit 10 is manually operated to adjust the angle θ that the wire W makes with the horizontal plane so that the wire is approximately perpendicular to the center of gravity of the paving machine M (FIG. 5). Then, the laser receiver 31 is adjusted and set to receive the laser L at the set point, that is, the zero point. Next, turn on the automatic operation switch (step S1). Then, the anchor vehicle B and the paving machine M are operated to pave the slope. During paving, it is determined whether the angle of the paving machine, that is, the angle of the laser beam is at the set position (step S2). If the braking device deviates from the set position, the braking means determines in which direction the deviation occurs (step
S3), the signal is sent to the hydraulic piston cylinder unit 10 (steps S4 and 5), and the unit expands and contracts to maintain the wire payout height, that is, the angle θ, at the set value.

[Effects of the invention] As described above, the present invention provides the following excellent effects.

(i) Since the angle of the wire can always be kept at the same angle as the angle of the slope paving machine, the slope paving machine always acts on the slope with equal pressure.

(ii) The pressure exerted by the slope paving machine on the slope is equal on both sides, and the slope paving machine does not disturb the paved surface.

(iii) As a result, a high quality pavement surface can be obtained.

(iv) The direction of the wire can be made parallel to the laser beam using a simple device.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional slope paving system, Figs. 2 to 4 are side views showing a support device of a conventional paving machine, and Figs. 5 to 8 show an embodiment of the present invention. 5 is a side view showing the whole, FIG. 6 is a front view taken in the direction of the arrow in FIG. 5, FIG. 7 is a front view showing an embodiment of the light receiver, and FIG. FIG. 3 is a flowchart showing the operation of the control means. B...Anchor vehicle, F...Slope (slope), L
... Laser light, M ... Inclined surface paving machine, W ... Wire, 7, 10 ... Vertical height adjustment means (swing arm, hydraulic piston cylinder unit), 30 ...
Emitter, 31...Receiver.

Claims (1)

[Scope of utility model registration request] In a support device for a slope paver for supporting a slope paver by a wire provided on an anchor car B, the slope paver M is provided with a laser beam projector 30, and the anchor car B is provided with a laser beam projector 30. A winch 9 that feeds out and winds up the wire W, and an arm 7 that is swingably attached to a fulcrum 20.
, a guide sheave 5 rotatably provided at the fulcrum 20 of the arm 7, a guide sheave 4 rotatably provided at the tip of the arm 7, and a hydraulic piston cylinder for adjusting the swing angle of the arm 7. unit 10
The wire W is fixed to the paving machine M by passing through a guide sheave 5 provided at the fulcrum 20 and a guide sheave 4 provided at the tip, and the arm 7 is integrally equipped with the floodlight. A light receiver 31 is provided to receive the laser beam from the light receiver 30, and when the position of the laser beam received by the light receiver 31 deviates from a preset position, the hydraulic piston cylinder unit 10 is actuated to remove the wire W. 1. A support device for a slope paving machine, comprising a control means for maintaining the angle at a set value.