JPS5880009A - Apparatus for uniformly laying rubber chip - 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 In constructing an elastic floor structure for sports such as a tennis court, a gymnasium floor, or a competition track, which includes an elastic layer, the rubber chips forming the lower layer of the structure are coated in a predetermined manner. This invention relates to a portable rubber chip leveling device for uniformly and efficiently laying rubber chips.

Rubber chips are suitable for providing elasticity to the floors of athletic facilities, etc., and the elastic floor has the advantage of being easy to maintain and manage, but there are the following problems when installing it. was there. In other words, taking a tennis court as an example, the area required to construct one side of the court is approximately 670 meters, and even if four sides were constructed, the required area is relatively small at about 2,408 meters, so conventional It is too narrow to introduce large-scale paving machines such as those commonly used in road paving work, and it is difficult to create a seamless finish between adjacent paved surfaces using crawler-type machines.

Therefore, in most cases, the rubber chip layer is laid by hand, which tends to result in uneven thickness of the rubber chip layer.In addition, workers are forced to work in a half-hearted manner, resulting in severe fatigue and reduced efficiency. It was bad. Furthermore, since the surface of rubber chips is usually covered with a viscous binder such as urethane resin, in order to spread it evenly, it is necessary to apply an appropriate shearing force evenly using a leveling tool such as a trowel. A high level of skill is required to perform the work, so finishing accuracy varies depending on the level of skill of the worker. Also, comb chips tend to adhere to the surface of the trowel, and the work must be interrupted each time to remove the deposits. There were various problems in terms of construction efficiency and finishing accuracy, such as not being able to do so.

Therefore, the purpose of this invention is to form an elastic floor made of rubber chips in a relatively small-scale facility such as a terrace court, and to spread the rubber chips smoothly and efficiently without manual intervention. To provide a small and light portable rubber chip leveling device which can be disassembled and assembled, and can be easily carried up when constructing a rooftop sports field or the like.

Hereinafter, the present invention will be described in detail according to embodiments shown in the accompanying drawings.

As shown in FIGS. 1 and 2, this rubber chip covering device includes a rectangular frame 1 made of steel and having a U-shaped cross section.

In this embodiment, the frame 1 is pulled in the direction of the arrow shown in the figure via a wire rope 2 by a pulling device such as a winch (not shown), and the frame 1 is held at a constant height on the lower surface thereof. A pair of bridge members 3 and 4 made of square tubular steel are provided for sliding on the surface to be paved. The frame 1 includes a hopper 5 for storing rubber chips coated with a viscous binder such as urethane resin, and a screed 6 for uniformly spreading the rubber chips supplied from the hopper 5 over the surface to be paved. It is provided.

As shown in detail in FIGS. 3 and 4, the hopper 5 includes a front plate slanted in a funnel shape, a rear plate 8 facing the front plate 8, and a rear plate 8 disposed between them. It is composed of a pair of left and right side plates 9 and 10, and a relatively coarse sieve plate 11 is provided at the hopper opening defined by these side plates.

In this case, one side plate 9 is also used by the inner wall of the side frame portion of the frame 1, but the other side plate 10 is angled so as to supply rubber chips along the boundary line with the existing rubber chip layer A. It is located. Further, the rear plate 8 is configured as a squeegee plate for adjusting the leveling thickness of the rubber chips supplied from the hopper 5. That is, the rear plate 8
As shown in FIG. 4, it is connected to a height adjusting screw shaft 13 having a handle 12, and is attached to the handle so that it can be moved up and down with respect to the frame 1 by operating the handle 12. In this embodiment, a vibrator 14 is attached to a rear plate 8 serving as a squeegee plate, and one end of a sieve plate 11 is held near the lower end of the rear plate 8. Therefore, when the vibrator 14 is operated, the vibration is transmitted not only to the rear plate 8 but also to the sieve plate 11, which causes the hopper 5
The rubber chips inside are smoothly supplied onto the surface to be paved through the sieve plate 11 without causing the so-called bridging phenomenon, and are spread to a predetermined thickness at the lower end line of the rear plate 8. In relation to the hopper 5, a shutter plate 15 for adjusting the opening degree of the hopper is slidably attached to the frame 1.

This shirt shirt plate 15 includes a pair of operating levers 30, 30 that extend forward through the frame 1. In addition,
In this embodiment, the rear plate 8 of the hopper 5 is constructed as a squeegee plate, but unlike this, a height-adjustable squeegee plate may be provided between the hopper 5 and the screed 6.
However, it is also possible to configure the rear plate (squeegee plate) 8 in a so-called "fixed wood" type in which the rear plate (squeegee plate) 8 is vibrated in the left-right direction perpendicular to the direction of movement of the frame 1. In this way, by applying vibration to the squeegee plate or making it perform a sliding motion, even when the thickness of the rubber chips is thin and the viscosity of the binder resin is particularly high, the squeegee plate will stretch the material and cause it to curl up. There are almost no such things. On the other hand, regarding the sieve plate 11, it may be omitted depending on the case.

To explain the bridge members 3 and 4, one bridge member 3
extends over the entire length of the frame 1 in the front and rear direction,
The other bridge member 4 facing the existing rubber chip layer A side extends rearward from the front of the frame and terminates at the hopper 5. In this case, in order to seamlessly finish the boundary line with the existing rubber chip layer A, the bridge member 4 is placed inward of the frame 1, that is, on the side plate 1o of the hopper 5, taking into account the rough width l between the bridge member 4 and the existing rubber chip layer A. It is provided so as to be located approximately on the extension line of the side edge of the hopper opening (see FIGS. 2 and 3).

In this embodiment, each bridge member 3, 4 is made of square tube steel as described above, but it may also be made of L-shaped angle steel. In any case, such bridge members 3,
4, it is possible to finish the rubber chips into a smooth flat surface while correcting the narrow unevenness without being affected by unevenness or unevenness of the paved surface in the process of advancing the frame 1. Compared to the case of a rotating wheel, there is almost no risk of resin or dust from the brimer getting stuck on the circumferential surface of the wheel.

The screed 6 is attached to the frame 1 via a hanging attachment 16. This attachment 1
Reference numeral 6 indicates a pair of horizontal beams 17° 17 parallel to each other, and a pair of vertical beams 1B installed on these beams.

It consists of 18. The screed 6 is made of a plate member whose front and rear edges are slightly curved, for example, and is height-adjusted to the vertical beams 18 via four support frames 19 planted at the four corners of the back surface. Possibly installed. That is, each support frame 19 is composed of a screw shaft, and by rotating the nut 20 screwed into the shaft,
The height of the screed 6 relative to the surface to be paved is adjusted, and is set to slope upward from the trailing edge to the front line, as shown in FIG. In this case, both the front and rear edges of the screed 6 are curved upward, but this is optional. Note that a spring 21 is interposed between the vertical strut 18 and the screed 6. In addition, the screed 6 is
Vertical frames 22, 2 arranged in a pair of front and rear on the back side
2 and a mounting plate 23 installed between them.
is installed. Note that the screed 6 is formed wider than the opening of the hopper 5, and is supplied from the hopper 5 by the vertical vibration caused by the vibrator 25, and
The rubber chips rolled out to a thickness T are rolled and rolled, including the boundary line with the existing rubber chip layer A, to evenly spread them to the required thickness t. In this case, since a highly viscous resin is generally used as the binder, rubber chips tend to adhere to the surface of the screed 6. Therefore, in this invention,
Although not shown in the drawings, heating means for heating the screed 6 is provided. This heating means may be, for example, a heating burner that blows hot air onto the back side of the screed 6 to heat it, or an oil bath containing high-temperature oil, and by heating the screed 6 in this way, the binder resin The viscosity of the trowel decreases and so-called "trowel slippage" improves, resulting in a smoother leveled surface. Particularly in the winter, the viscosity of the resin increases, so this heating has a great effect. The heating temperature is preferably from about 50°C to about 150°C within a range where the resin does not undergo thermal decomposition. Further, as described above, the other bridge member 4 is the frame 1
In this embodiment, the rear part of the frame 1 is held at a predetermined height to compensate for this. A height adjustment frame 26 is provided. This height adjustment frame 2
6 is attached so as to extend from one vertical beam 18 into a through hole 28 bored in the screed 6 and onto the surface to be paved, and a hemispherical tank body is attached to the lower end of the hole 28. 27
is formed. However, in relation to the weight balance of each component attached to the frame 1, if the rear part of the frame 1 is stably held at a constant height position above the paved surface, the height should be adjusted as described above. The adjustment frame 26 may not be provided. Furthermore, between the hopper 5 and the screed 6, below the side frame of the frame 1 facing the existing rubber chip layer A side, there is a protrusion made of inverted steel, as shown by the chain line in Figure 1. A prevention plate 29 is provided to prevent the rubber chips supplied from the hopper 5 to the boundary line with the existing rubber chip layer A from unnecessarily spreading beyond the overlap width l.

Further, this rubber chip covering device is provided with a guide means for linearly guiding the frame 1 when being towed by a traction device such as a winch.

In this embodiment, the guide means cooperates with a guide rail 31 having an inverted U-shaped cross section and installed parallel to the boundary line of the existing rubber chip layer A at a predetermined interval. 1 attached to the frame 1 side as shown.
It consists of a pair of guide rollers 32 and 32. In this case, each guide roller 32, 32 is attached so as to sandwich the guide rail 31 from both sides through the support arm 33, so that it will not come off the guide rail 31 even if the frame 1 moves slightly up and down. It has become. 6 and 7 show a modified embodiment of the guide means. According to FIG. 6, the guide means has an inverted U-shaped cross section and slides while holding a guide rail 31 in place of the guide roller 32. A slider 34 is used. On the other hand, in the embodiment shown in FIG. 7, the flange portion 35 of the guide rail 31 is formed wide, and the lower surface of the frame 1 is held at a predetermined height on the flange portion 35.
A second guide rail 36 called a spacer rail is provided so that it slides thereon.

Therefore, according to this, one bridge member 3 can be omitted.

Next, the present invention will be explained in detail. First, handle 12
．． 12 and operating levers 30 and 30, the height of the rear plate (squeegee plate) 8 of the hopper 5 and the opening degree of the hopper 5 by the shutter plate 15 are adjusted in relation to the desired layer thickness of the rubber chip layer. Rubber chips sprinkled with a viscous binder such as urethane resin are deposited and stored in the hopper 15, and after starting the respective vibrators 14 and 25, the frame 1 is moved through the wire rope 2 by a winch (not shown). Tow in the direction of the arrow in the figure. This results in
Frame 1 has guide rail 31 and guide roller 32°3
2, a predetermined amount of rubber chips are sequentially supplied onto the surface to be paved from within the hopper 5 through the sieve plate 11.

In this case, the rear plate 8 and the sieve plate 11 of the hopper 5 are connected to the vibrator 1.
4, the rubber chips are fed extremely smoothly into the hopper 5 without causing a bridging phenomenon, and are spread onto the surface to be paved by the rear plate 8 of the hopper 5, which is configured as a squeegee plate. be done. Thereafter, the screed 6 with a vibrator 25 located at the rear is used to roll it to a required thickness as shown in FIG. In this way, a uniform and smooth rubber chip layer is formed in the form of a band on the surface to be paved, and this layer is successively placed adjacent to the entire surface to be paved. For example, the border between the existing rubber chip waste container and the existing rubber chip waste container can be seamlessly finished. That is, since the other bridge member 4 of the frame 1 terminates at the hopper 5 as described above, it is connected to the existing rubber chip layer A.
If the hopper 5 is placed along the boundary line, the edge of the opening formed by the side plate 1° of the hopper 5 will be located exactly on the boundary line, and an appropriate amount of shavings will be supplied from the hopper 5 toward the boundary line. When the rubber chips are spread by the rear plate 8 of the hopper 5, they are spread while appearing slightly wavy so as to rest on the existing rubber chip layer A side, and are then rolled by the screed 6. In this way, a seamless finish can be achieved between adjacent rubber chip layers.

In the embodiment described above, the screed 6 is
Although the rubber chip layer is compacted by vertically vibrating the screed, various screeds described below can be used in the present invention. Each of the screeds 6 shown in FIGS. 8 to 10 has a bearing portion 40 formed at its front edge, and is installed between the side frame portions of the frame 1 via this bearing portion 40. Horizontal rotation support shaft 4
It is pivoted to 1. In FIG. 8, screed 6
In addition to the vibration exciter 25, the weight 42 can apply a synergistic rolling force to the rubber chips placed on the back side of the rubber chip by the vibration of the vibration exciter 25 and the weight of the weight 42, resulting in a denser rubber chip layer. can get. Figure 9 shows a modification related to the first step, in which the screed 6 is loaded with a weight 42, and depending on the viscosity of the binder and the leveled thickness of the rubber chips, only the weight 42 may be applied. The rubber chip layer can be paved smoothly. In addition, the above-mentioned weight 42
Various weights can be selected depending on construction conditions, etc. Further, FIG. 10 shows an example of a screed constructed in a so-called fixed lumbering style. That is, this screed 6 is operatively connected to a disc crank mechanism 44 that converts the rotational motion of a motor 43, which is a driving source, into linear motion.

Therefore, this screed 6 is moved reciprocally at the left and right blade heights perpendicular to the direction of movement of the frame 1 using the rotation support shaft 41 as a guide rail. 1. Spread the rubber chips evenly. Of course, a vibrator or weight may be placed on this screed 6 as shown in FIGS. 8 and 9. Further, referring to FIGS. 11 and 12, a shear-type roller screed is shown. This screed 6 consists of a rotating roller rotatably supported with respect to the frame, and by making the rotation speed of the roller by the motor 45 faster than the advancing speed of the frame 1,
A shearing force is applied to the rubber chip paved surface to evenly spread it. The rotating shaft 46 of the roller screed 6 is mounted on a bearing member 48 that slides within a guide 47 bored in the side frame portion of the frame l, as shown in FIG.
By operating a screw shaft 49 with a handle attached to the bearing member 48, the height of the roller type IJ drawer can be adjusted according to the thickness of the rubber chip layer. ing.

On the other hand, in the embodiment shown in FIG. 14, a tapping plate 50 is provided which acts to lightly tap the surface of the rubber chip layer leveled by the screed 6. That is, the rubber chip is attached to the screed 6 as described above.
Immediately after escaping from the trailing edge, the chips try to dry and restore themselves due to their own elasticity, and from a microscopic perspective, the reaction causes the corners of each chip to protrude from the surface of the layer. , this may cause the pavement surface to exhibit a dull, grained pattern. The above-mentioned tapping plate 50 is used to correct this problem and finish the paving surface cleanly. and is connected to the solenoid device 53. Therefore, the tapping plate 50 is suspended to a predetermined height by the intermittent pulling operation of the solenoid device 53, and falls onto the rubber chip layer due to its own weight, and the corner part is Each of the protruding rubber chips is corrected so that it is flat against the layer surface.

Although only one solenoid device is shown in this figure for the sake of convenience, in reality, the solenoid devices are provided on both side frame portions of the frame 1, respectively. In addition, in the above embodiment, a method of towing the frame 1 with a winch or the like is adopted, but it is also possible to install a traveling means such as a track or a wheel on the side of the frame 1, that is, on the side where the guide means is provided. It can also be self-propelled.

As is clear from the description of each embodiment described above, the present invention has a relatively small and simple structure, and can efficiently form a rubber chip layer on a relatively small floor area such as a tennis court. Furthermore, it is possible to provide an apparatus suitable for leveling the material extremely smoothly without creating seams or the like. Furthermore, when transporting to a construction site, particularly a rooftop playground, etc., unlike conventional paving equipment, each component can be disassembled and transported, making it easy and convenient to handle.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a rubber chip matting device according to the present invention, Fig. 2 is a plan view thereof, Fig. 5 is a sectional view taken along line I-1 in Fig. 2, and Fig. 4 is a hopper portion of this device. 5 is a schematic sectional view showing the screed portion of FIG. 1, FIGS. 6 and 7 are drawings showing modified examples of the guide means, and FIGS. 8 to 13. 1 is a perspective view showing an embodiment in which a tapping plate is provided at the rear of the screed. In the figure, 1 is a frame, 2 is a wire rope, 3 and 4 are bridge members, 5 is a hopper, 6 is a screed, 7 is a front plate, 8 is a rear plate (squeegee plate), 1o is a side plate, 11 is a sieve plate, 14.25
is a vibrator, 26 is a height adjustment frame, 31 is a guide rail, 3
2 is a guide roller, 34 is a slider, 42 is a weight, 5o
is a tapping board. Patent applicant: Sumitomo Rubber Industries Co., Ltd. Patent attorney Takuya Ohara 4 Figure 5 Figure 6 Figure 7 Procedural amendment (voluntary) December 2, 1980 Patent Office Shima 1) Spring Jumei 2 invention Title Paving material covering device 3, Person making the amendment Related to the case Patent applicant 4, Attorney 〒102 As attached, 1. The name of the invention is corrected to “Paving material covering device” 0 2. Patent claim The range will be corrected as shown in the attached sheet. 3. In the specification, on page 3, line 5, add the sentence ``paving materials such as'' after ``rubber chips.'' 4. In the same book, on the 6th line of the same page, "rubber chip covering device" is corrected to "paving material covering device." 5 In the same book, on the 8th line of the same page, add ``especially'' at the beginning of the sentence. 6. Same book, page 4, line 16, “...in the facility.”
Add ``for example'' after . 7, same book, page 5, line 1 and page 6, line ``
"Rubber chip covering device" is corrected to "paving material covering device" respectively. 8. Same book, page 12, line 6, "Rubber chip covering device" is corrected to "paving material covering device" 0 9. Same book, page 19, line 3, "...can be done" ” Add the following sentence to the space. "Furthermore, in the above embodiment, the leveling operation was explained using rubber chips as an example, but this device can also be used for leveling work of other paving materials such as resin mortar. In this case, it is not necessary to provide the sieve plate 11 at the hopper opening.'' 10. In the same book, on the 7th line of the same page, the phrase ``rubber chip layer'' is corrected to ``a floor layer made of rubber chips, etc.''. 11. In the same book, on the 7th line of the same page, "rubber chip covering device" is corrected to "paving material covering device." Claims (1) A device for leveling paving materials such as rubber chips in parallel and adjacent to each other while moving over a surface to be paved, comprising: a frame; The frame includes a moving means for moving the frame above the frame, and a gathering means for guiding the frame along a predetermined course when the frame moves. A pair of bridge members, a hopper that stores the paving material and has an opening facing the surface to be paved, and a squeegee plate that spreads the paving material to a predetermined spreading thickness. and a screed that is located behind the squeegee plate and spreads the paving material on the paved surface while pressing it, and the screed intersects with the traveling direction of the frame and A paving material laying device characterized in that it is configured as a fixed timber screed that reciprocates parallel to the surface. The paving material rug according to claim 1, wherein one bridge member is configured to be shorter than the other bridge member so as to terminate near the hot spot N6 opening. (3) The one bridge member is located directly below or inside one side edge of the hopper opening, and the lining material covering device according to claim 2, wherein the one bridge member is located directly below or inside one side edge of the hopper opening. (4) A device for laying paving material according to claim 1, 2 or 3, characterized in that the screed is provided with heating means. (5) The squeegee plate is provided with a heating means. The paving material laying device according to claim 1, wherein the squeegee plate is orthogonal to the traveling direction of the frame, and The paving material covering device according to claim 1 or 5, characterized in that the paving material covering device reciprocates in parallel with the paved surface.

Claims (6)

[Claims] (1) An apparatus for leveling an elastic floor layer made of rubber chips in parallel and adjacent to each other while moving on a surface to be paved, comprising: a frame; and a moving means for moving the frame on the surface to be paved; a guide means for guiding the frame along a predetermined course when moving; the frame includes a pair of left and right bridge members disposed parallel to the direction of movement; Accumulate, and
a hopper having an opening facing the paved surface;
A squeegee plate that spreads the rubber chips supplied from the hole/N6 to a predetermined spreading thickness, and a screed located behind the squeegee plate that spreads the rubber chips evenly on the paved surface while rolling them. A rubber chip paving device, characterized in that the screed is configured as a fixed timber screed that reciprocates in a direction that intersects with the advancing direction of the frame and parallel to the surface to be paved. (2) The one bridge member disposed on the boundary line side with the adjacent existing rubber chip layer is shorter than the other bridge member (configured so as to terminate near the hopper opening). A rubber chip matting device according to claim 1, characterized in that: (3) The rubber chip matting device according to claim 2, wherein the one bridge member is located directly below or inside one side edge of the hopper opening. (4) The rubber chip covering device according to claim 1, 2 or 3, wherein the screed is provided with heating means. (5) The rubber chip covering device according to claim 1, wherein a vibrator is attached to the squeegee plate. (6) The rubber chip according to claim 1 or 5, wherein the squeegee plate reciprocates perpendicularly to the traveling direction of the frame and parallel to the paved surface. Rug equipment.