JPS58117104A - Apparatus for execution of paving material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paving material application device that smoothly spreads paving materials such as resin mortar and rubber chips on a surface to be paved.

Generally, this type of paving material application equipment has a self-propelled or towed frame body equipped with a hopper and a screed, and supplies paving material from the hopper while moving the frame body, and then The structure is such that the material is compacted using a screed, but when constructing a floor surface for a tennis court, etc., the frame body is moved parallel to the adjacent paving surface and the paving material is successively laid down. ing. In that case, the influence of unevenness on the paved surface in the moving direction of the frame body can be eliminated by providing a long bridge member on the lower surface of the frame body. When reaching an uneven part of the paved surface in the width direction, that is, in the direction perpendicular to the direction of movement, the frame body will tilt, resulting in a step between it and the adjacent existing paved surface, making it impossible to maintain a seamless, smooth surface. It was difficult to form a smooth paved surface.

Therefore, an object of the present invention is to provide a paving material construction device that can remove the influence of unevenness in the width direction as described above and finish it smoothly without any joints between each -th1 paving material. There is a particular thing.

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

FIG. 1 is a partially cutaway schematic perspective view of this apparatus, in which the paving material application apparatus is towed on a paved surface in the direction of arrow A in the figure by a traction device such as a winch (not shown). It is equipped with a frame body l. This frame body 1 is provided with a hopper 2 for storing paving materials such as resin mortar, and a screed 3 for compressing and hardening the paving material constituted by this hopper 2. is attached with a pair of left and right false members 4 and 5 arranged in parallel along the traveling direction. In this case, one of the false members 4 is attached to the frame body 1 in order to correct (absorb) the unevenness of the paved surface in the traveling direction.
The other false member 5, which extends along almost the entire length of the existing paved surface B side, efficiently supplies paving material between the existing paved surfaces 8 and seamlessly connects that part. It is made short so that it terminates on the near side of the hopper 2 in order to make it more convenient.

The hopper 2 consists of a front plate 6 arranged in a funnel-shaped manner, side plates 7, 7 which also serve as the frame body 1, and a rear plate 8 provided opposite to the front plate 6. In this case, the rear plate 8 is configured as a squeegee plate attached to the frame body l so that its height can be adjusted. That is,
This squeegee plate 8 has threaded shafts 9 and 20 planted on both sides of its upper side. In this case, one threaded shaft 9 located on the existing paved surface B side is provided on the frame main body 1 side. It is operatively connected to the servo motor 10, and a height adjustment handle 21 is attached to the other threaded shaft 201. The squeegee plate 8 also has an arm 11 extending from its side to the existing paved surface B side through the side plate of the frame body l.
A rod 13 having a rotating wheel 12 that rolls on the existing paved surface B is attached to the end of the arm 11 so as to be able to slide vertically via a holding cylinder 14. In this embodiment, as illustrated in FIG. 2, the rod 13 has a protrusion 17 extending laterally from its upper end, and the protrusion 17 is provided on the squeegee plate 8 side. First and second limit switches 15, 16 are installed, which are arranged vertically across from each other. The limit switches 15 and 16 are electrically connected to the servo motor 10 via a control circuit (not shown), and the servo motor 10 rotates the screw shaft 9 when the first limit switch 15 is on. When the second limit switch 16 is turned on, the squeegee plate 8 is rotated in the opposite direction to slide the squeegee plate 8 downward. Further, the attachment position of the protruding piece 17 to the rod 13 can also be adjusted appropriately.

According to this embodiment, the screed 3 has a coil spring 18
The vibration exciter 19 is suspended on the frame main body 1 in a downwardly biased state, and a vibrator 19 is placed thereon. Therefore, this screed 3 is configured to compact and level the paving material made up of one hopper 2 by the synergistic effect of the biasing force of the coil spring 18 and the vibration of the vibrator 19.

According to this paving material construction device, when supplying paving material along the existing paved surface and sequentially laying the paved surface over the entire target floor surface, the surface to be paved in the width direction of the frame body 1 is It is possible to finish the joints smoothly without being affected by unevenness. That is, before this device is advanced along the existing paved surface B, the squeegee plate 8 is adjusted to the optimum height for the layer thickness of the existing paved surface B. This adjustment is performed by operating the servo motor 1o and the handle 21, but the handle 21 side is fixed at a substantially constant height.

In addition, in connection with this, the protruding piece 17 is
Set the limit switches 15 and 16 so that they are located approximately in the middle. Note that the position relative to the protruding piece 17 may be adjusted by moving the limit switch side1.Then, while pulling the frame body 1 in the direction of arrow A in FIG. 1 using a winch or the like (not shown), the hopper 2 Paving material is supplied onto the surface to be paved and compacted with a screed 3, but due to unevenness in the width direction of the frame body 1, for example, as shown in FIG. If the bridge member 5 side is tilted downward, the rod 1
3 slides upward relative to the frame body 1, and the protruding piece 17 acts on the first limit switch 15. As a result, the servo motor 10 operates, and one side of the squeegee plate 8 is lifted to an optimum height through the screw shaft 9 as shown by the chain line in FIG. On the other hand, when the bridge member 4 side is lowered and the bridge member 5 side is lifted up, the rod 13 will be lowered relative to the frame body 1, and the protrusion 17 will move toward the second limit switch 16.
It acts on As a result, the servo motor 10 rotates in the opposite direction, and the squeegee plate 8 is rotated so that the second limit switch 16 is connected to the protrusion 1.
It will be slid downward until it comes off from 7. In this way, the squeegee plate 8 is always maintained at the optimum height, and the paving material is supplied from the hopper 2 to the joint with the existing paved surface B in just the right amount. Then, the paving material is compacted by the screed 3 including the joint portion, and there is almost no possibility that a step or the like will occur at the joint portion. Moreover, unevenness in the traveling direction of the paved surface can be avoided by the long bridge member 4.
Since this is corrected (absorbed), the frame main body 1 does not tilt in the front-back direction, and the entire target floor surface can be finished smoothly and neatly.

In the above embodiment, a microswitch is used as a height detection switch for the squeegee plate 8, but in addition to this, the angle of the arm sliding on the existing pavement surface B can be detected and its relative height detected. Angle sensors and existing pavement surface B
The squeegee plate can also be configured to be continuously controlled using a capacitance type detector or the like that detects changes in stray capacitance distributed between the squeegee plate and the squeegee plate. Further, although the squeegee plate 8 is moved up and down by the servo motor 10, other driving means such as a hydraulic cylinder may be used. Furthermore, it goes without saying that the frame body 1 may be self-propelled.

[Brief explanation of the drawing]

Fig. 1 is a perspective view schematically showing a paving material application device according to the present invention with a portion cut away, Fig. 2 is a diagram showing a height detection switch used in this device, and Fig. 3 is a diagram showing a part of the height detection switch used in this device. FIG. 6 is an explanatory diagram of the operation of the squeegee plate in the uneven portion in the width direction. In the figure, 1 is a frame body, 2 is a hopper, 3 is a screed, 4 and 5 are bridge members, 8 is a squeegee plate, 10 is a servo motor, 13 is a rod, 15 and 16 are limit switches, 1
7 is a protrusion. Patent applicant: Sumitomo Rubber Industries, Ltd.

Claims (2)

[Claims] (1) A frame body that moves over a surface to be paved, and a hopper mounted on the frame body, and while the frame body is moving, paving material such as resin mortar is delivered from the hopper to an area adjacent to the existing paved surface. The apparatus includes a squeegee plate for spreading the paving material supplied from the hopper onto the paved surface, and a relative position of the squeegee plate with respect to the existing paved surface. The squeegee plate includes a height detector that detects the height, and a height adjustment means including a servo motor that moves the squeegee plate up and down based on a signal from the height detector, and the squeegee plate is connected to the height detector and the squeegee plate. A pavement material application device, characterized in that it is held at a predetermined optimum height position relative to the existing pavement surface via a height adjustment means. (2) The paving material construction apparatus according to claim 1, wherein the squeegee plate is also used as a rear plate of the hopper.