JP2000034711A - Car stop - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a car stop contrived to effectively use waste plastics to save resources, excellent in mechanical strength and durability, made drastically light in weight, and improved in transportability and installation work. SOLUTION: This is a car stop to be installed on the ground in a pillow style. It is provided with a car stop body 2 made by extrusion molding of waste plastics of a thermoplastic resin such as a polyolefine and/or saturated polyester as a main component, one or more hollow part 3 integrally formed with the car stop body 2 axially parallel thereto at the time of extrusion molding, and one or more anchor inserting hole 4 vertically drilled in the car stop body 2 to cross the axial direction of the car stop body 2 at right angles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bogie used on a quay of a harbor or a parking lot.

[0002]

2. Description of the Related Art Conventionally, a metal such as concrete or stainless steel or aluminum is provided at a quay of a harbor, a parking lot, or a boundary between a road and a sidewalk to control the entry of automobiles and motorcycles. Made bollards are used.

[0003]

However, the above-mentioned conventional bogie has a problem that the concrete bollard is neutralized by acid rain or the like and is chipped from the surface and lacks durability. Further, there is a problem that a metal-made one is easily corroded by acid rain or the like, and rust or the like is generated on the surface to impair the appearance. Furthermore, all of them have a problem that they are heavy in weight and lack transportability and installation workability. In addition, since the hardness is too high, there is a problem that the impact when stopping the vehicle is too strong. In addition, many types of waste plastics are dumped and cause environmental destruction, and those that are mixed into household garbage and discharged are harmful to incinerators due to their high caloric properties. There was a problem that harmful chemical substances were emitted to the atmosphere and the like.

The present invention solves the above-mentioned conventional problems. In addition to effective use of waste plastics to save resources, the present invention is excellent in mechanical strength and durability, further reduced significantly in weight, and has improved transportability and installation workability. It is intended to provide an improved bogie.

[0005]

In order to achieve the above object, the present invention has the following structure. The bollard of the present invention is a bollard installed in the form of a pillow on the ground, and a bogie main body extruded from waste plastic containing a thermoplastic resin such as polyolefin and / or saturated polyester as a main component. It has one or more hollow portions integrally formed in parallel with the axial direction of the wheel stopper main body, and one or more anchor insertion holes formed in a vertical direction perpendicular to the axial direction of the wheel stopper main body. Is what you are doing. According to this configuration, since a waste plastic mainly composed of a thermoplastic resin such as polyolefin or saturated polyester is used, the weight can be significantly reduced as compared with a conventional inorganic one. In addition, it is possible to effectively use the waste plastic. One or more hollows integrally formed parallel to the axial direction of the bollard body further reduce the weight of the bollard, remarkably improve the transportability from the factory to the site and the workability of the on-site installation work, and save resources. And impact absorption can be improved. It has anchor insertion holes that are drilled up and down in the direction perpendicular to the axial direction of the wheel stop main body, so that it can be fixed simply by inserting the anchor locally and the workability of installation work can be improved. .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bogie according to claim 1 of the present invention is a bollard installed on the ground in the form of a pillow, and is a waste plastic mainly composed of a thermoplastic resin such as polyolefin and / or saturated polyester. A brace body extruded with the above, one or more hollow portions integrally formed in parallel with the axial direction of the brace body at the time of the extrusion molding, and a perforation formed in a vertical direction perpendicular to the axial direction of the brace body. And one or more anchor insertion holes. Thus, since waste plastics made of thermoplastic resins such as polyolefins and saturated polyesters are used, a bogie can be manufactured by the extrusion molding method, and the waste plastics can be made effective. By providing at least one hollow portion integrally formed in parallel with the axial direction of the bollard main body, the weight is reduced by 28% or more as compared with a conventional inorganic bollard.
The weight can be reduced to 40% and the shock absorption can be improved. It has an anchor insertion hole that is drilled up and down in the direction perpendicular to the axial direction of the car stop main body, so that it can be fixed simply by inserting the anchor on site and the workability of installation work can be improved. . Here, as the waste plastic, polyethylene, polypropylene, polystyrene, and the like obtained from waste such as daily necessities and packaging materials.
Any thermoplastic resin containing a saturated polyester such as polyethylene terephthalate or polybutylene terephthalate as a main component, or a mixture or a composite composition thereof may be used.
Further, commercially available regenerated pellets such as PET S
TONE (trademark of Nippon Resco Co., Ltd.) and resin manufacturers
It is also possible to use an off-spec resin or the like that is carried out at the time of production or molding. The waste plastic may be mixed with waste rubber such as tires and packing. The mixing amount is 7 wt% or less, preferably 5 wt% or less. When the content exceeds 5% by weight, it is difficult to disperse uniformly at the time of melting, and the mechanical strength tends to decrease. Particle size of waste plastic raw material is 50μm
Granules (pellets) of 10 to 10 mm, preferably 500 μm to 3 mm are suitably used. This is because the resin easily melts during molding and can prevent the resin from burning and deteriorating. As the waste plastic, those containing an inorganic or organic filler or the like are also preferably used. This is because the wear resistance of the wheel stop can be improved. The hollow portion may be one or more circular, rectangular, square, other polygonal or honeycomb structures. The hollow portion is formed at 20 to 50%, preferably 25 to 40% of the cross-sectional area of the bollard body. When the amount is less than 25%, the effect of reducing the weight becomes difficult depending on the type of the waste plastic, and when the amount exceeds 40%, the elasticity increases and the mechanical strength tends to decrease. Not preferred. One or more anchor insertion holes are formed. The symmetrical position is preferable because the impact force of the bollard can be dispersed. The shape may be circular, rectangular, square, or other polygonal, depending on the shape of the anchor. Weatherproof paint is applied to the surface of the vehicle body.
Further, a yellow and black stripe pattern or the like is applied according to the installation location or the like.

[0007] The vehicle stop according to claim 2 of the present invention is the vehicle stop according to claim 1, wherein 10
It has a composition containing up to 45 wt% of a polycarbonate resin. Thus, in addition to the effects obtained in claim 1, the addition of the polycarbonate resin can improve the mechanical strength such as the impact strength of the vehicle stop and the heat resistance. Even in summer, deformation due to heat can be prevented. Further, it has an effect of improving scratch resistance, preventing wear due to rotation of wheels at the time of starting the vehicle, and improving durability. Here, as the polycarbonate resin, in addition to general distribution products, waste of molded products such as compact discs and various housings, polycarbonate resin of off-spec of a resin maker, and inorganic resin and the like. Or regenerated pellets containing organic or organic fillers are used. A granulation material having a particle size of 50 μm to 10 mm, preferably 500 μm to 3 mm is suitably used. This is because it is easily mixed with the waste plastic during molding, and phase separation can be prevented. As the blending amount of the polycarbonate resin becomes less than 10 wt%, the impact strength, heat resistance and abrasion resistance of the bollard tend to be lacking, and as it becomes more than 40 wt%, the molding of the bollard increases. Conditions (molding humidity and the like) become extreme, and a decrease in mechanical strength due to thermal degradation tends to be recognized.

[0008] According to a third aspect of the present invention, the bogie according to the first aspect of the present invention is characterized in that,
It has a configuration in which about 35 wt% of a polystyrene copolymer is blended. Thus, in addition to the effect obtained in claim 1, the addition of the polystyrene copolymer has the effect of improving the cold resistance and elasticity of the bollard and improving the workability of extrusion molding. Here, as the polystyrene copolymer, for industrial use, for weak electricity,
Acrylonitrile-styrene resin (SAN) and butadiene-styrene resin (S /
B), polystyrene copolymers composed of styrene and styrene derivatives such as butadiene-acrylonitrile-styrene resin (ABS), wastes of these molded products, and commercially available regenerated pellets and off-spec resins of resin manufacturers. used. The particle size of the molding material is 50 μm to 10
mm, preferably 500 μm to 3 mm. Particles having a particle diameter of 500 μm to 3 mm have excellent uniform mixing properties, are easily melted during molding, and can prevent the resin from burning during molding and deteriorating mechanical strength. As the waste polystyrene copolymer, one containing an inorganic or organic filler or the like is also preferably used. This is because the wear resistance can be improved. As the blending amount of the polystyrene copolymer becomes less than 10 wt%, the mechanical strength of the car stop, especially the abrasion resistance, tends to be lacking, and as it exceeds 35 wt%, the impact strength tends to be lacking. Are not preferred.

According to a fourth aspect of the present invention, there is provided the bogie according to any one of the first to third aspects, wherein 3 to 15 wt% of whisker is contained in the waste plastic.
And / or 3 to 15 wt% carbon fiber or glass fiber,
It has a configuration in which a strength reinforcing agent composed of short fibers such as metal fibers and ceramic fibers, or a mixture thereof, or a crushed thermosetting resin composite material containing these strength reinforcing agents is blended. Thereby, in addition to the effect obtained by any one of the first to third aspects, there is an effect that the mechanical strength, particularly the shear strength, of the wheel stop can be improved and the durability can be improved. Here, whiskers include metals such as Al ₃ N, Ni ₃ Al, potassium titanate, elements such as graphite and silicon, oxides such as Al ₂ O ₃ , sulfides, and nitrides such as Si ₃ N ₄ and AlN. Material, carbide such as SiC,
B ₄ C and 9Al ₂ O ₃ · 2B may be formed of any ₂ O ₃ boron compound such like. The short fibers include carbon fibers, glass fibers, metal fibers, and ceramic fibers, and have a length of 3 μm to 20 μm, preferably 5 μm to 15 μm.
m is good. As the length becomes shorter than 3 μm, the mechanical strength, particularly the shear strength, tends to decrease, and as the length becomes longer than 20 μm, the extrusion tends to become difficult. In addition, a product obtained by processing a thermosetting resin such as FRP containing whiskers or short fibers to the above-mentioned length can be used. As the blending amount of the strength enhancer becomes less than 3 wt%, the mechanical strength of the car stop, especially the shear strength and durability tends to be lacking, and as it becomes more than 15 wt%, extrusion molding tends to become difficult. Both are not preferred because they are recognized.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 (a) is a plan view of a car stop according to Embodiment 1 of the present invention, FIG. 1 (b) is a side view thereof, and FIG. It is sectional drawing of the A line.
1 and 2, reference numeral 1 denotes a bollard formed of a waste plastic or a resin composition in which PC or ABS is blended therewith, and 2 denotes 200 mm × 200 mm × 4000 m.
m, the main body of the bollard 1 formed into a size of m
Weather-resistant paint layer, painted with yellow and black stripes on the surface of
3 is a cross-sectional area of the main body 2 of 20
A hollow part having a circular cross section molded at about 50%;
An anchor insertion hole portion penetratingly provided at a symmetrical position at the center of the upper surface.

[0011] The method of manufacturing the bollard thus constructed according to the present embodiment will be described below. FIG. 3 is a schematic view of a bogie extruder according to Embodiment 1 of the present invention. 5 is an extrusion molding machine, 6 is a molding raw material mixed with waste plastic, PC, ABS, etc., 7 is a heater, 8 is a screw, 9 is an extrusion cylinder, 10 is a nozzle, 11 is a die, and 12 is an injection. Cylinder, 13 is a pressurizing source, 14 is an injection plunger, 15 is a nozzle, 16 is a mold, 17 is a moving plate, 18 is a core support, 19 is a core, 20
Is a flat stand. A molding raw material 6 containing a plastic molding raw material, a strength reinforcing material, an additive and the like is put into an extruder 5 in the same manner as before, heated by a heater 7 and rotated by a screw 8 and an extrusion cylinder 9. After kneading by the action, the plastic in a molten state is filled into the injection cylinder 12 from the die 11 and extruded into the mold 16 through the nozzle 15 by the injection plunger 14 by the pressure source 13. The molded product moves in the direction of the core support while being in contact with the moving plate 17 at the tip on the flat base 20. A core 19 is provided so that the hollow portion 3 of the wheel stop does not deform. It is obtained by cutting a predetermined length according to the bollard standard. To improve productivity, the molten plastic flowing out of the die 11 is divided into four injection cylinders 12 and
Extrusion may be performed in a row line. After the extruded semi-finished product is cooled, it is perforated at a predetermined location to form an anchor insertion hole portion 4. As described above, according to the present embodiment, since the waste plastic mainly containing a thermoplastic resin such as polyolefin or saturated polyester is used, the weight can be significantly reduced as compared with the conventional inorganic one. In addition, it is possible to effectively use the waste plastic. One or more hollow sections integrally formed parallel to the axial direction of the bollard body further reduce the weight of the bollard, remarkably improve the transportability from the factory to the site and the workability of the on-site installation work, and save resources. And impact absorption can be improved. It has anchor insertion holes that are drilled up and down in the direction perpendicular to the axial direction of the wheel stop main body, so that it can be fixed simply by inserting the anchor locally and the workability of installation work can be improved. . A bollard can be manufactured by extruding waste plastic such as polyolefin or saturated polyester by an extrusion molding method, and waste plastic can be effectively used. The one or more hollow portions integrally formed in parallel with the axial direction of the wheel stop main body can reduce the weight of the wheel stop, reduce the material cost, and improve the shock absorption.
The present invention provides a car stop having an anchor insertion hole portion vertically formed in a direction intersecting with the axial direction of the car stop main body, so that the anchor can be fixed only by inserting the anchor and the workability of installation work is improved. be able to. In the above description, an example was described in which the hollow portion was constituted by four circular and four anchor insertion holes. However, other numbers and shapes of hollow portions and other numbers of anchor insertion holes were used. The same can be applied to the configuration of the unit.

[0012]

EXAMPLES (Examples 1 to 6) Next, the present invention will be specifically described based on examples.

[Table 1] First, as shown in (Table 1),
(A) PET STONE (manufactured by Nippon Resco Co., Ltd., made of polyethylene as a main component or made of saturated polyester such as polyethylene terephthalate as a main component) as waste plastic; and (B) polycarbonate (PC)
(Manufactured by GE Japan Co., Ltd.) and (C) ABS (manufactured by Ube Saikon Co., Ltd.) were prepared. Next, as a strength reinforcing material,
And _{9Al 2 O 3 · 2B 2 O} 3 ( manufactured by Shikoku Chemicals Corporation) is, (E) Ca - - (D) whiskers were prepared Bonn fibers (manufactured by Toray Industries, Inc.). Each of these raw materials (A, B, C,
D, E) were blended in accordance with the blending ratios as shown in (Table 1) to prepare the resin compositions of Examples 1 to 6. Using these raw materials, extrusion molding was performed by an extrusion molding machine in which four cores were arranged in a die to obtain a bollard having four hollow portions as shown in FIG. Next, two anchor holes were formed at symmetric positions. Size is 200mm × 200mm × 40
The weather resistance test, the adhesion of the paint, and the impact test with a passenger car were performed, and a high result was obtained in each case. The weight was 98.0 kg to 106 kg. This has been found to be 30% to 45% of the weight of a conventional bollard.
Next, a compression strength test was performed on the bollard of Example 6. Although a compressive strength value of 842 kgf / cm ² was obtained,
As the compressive strength value of ordinary Portland cement (335
４０６406 kgf / cm ² ).

Next, the same six types as described above (Examples 1 to 5)
6) Regarding the raw material for bollards, see JISK 7110-8.
4 and JIS K 7162-94, an Izod impact test and a tensile test were performed. The results are shown in (Table 2).

[Table 2] As apparent from Table 2 above, Example 6 (100w
t% PET STONE), the Izod impact strength is 2.6 kgf · cm / cm, and the tensile strength is 370 kgf / cm.
mm ² was obtained. The composition containing PC (Example 1) had an impact strength of 162% and a tensile strength of 120 compared to Example 6.
% Improvement. Further, the composition containing ABS (Example 2) had an impact strength of 223% compared to Example 6,
The tensile strength was found to improve by 138%. Also, from the results of Example 3 and Example 5, it was found that whisker was slightly superior as a reinforcing agent.

(Example 7) Using the forming raw material of Example 6,
It was formed in the same manner as in Example 6. Samples having dimensions shown in Table 3 and having a hollow part (cylinder) volume% of 38 vol% were prepared and subjected to a compression test and a bending test.

[Table 3] a. Compression test: 300tf compression tester (use capacity 200
tf) and apply about 100 kgf / cm ² per minute to the specimen.
A load was applied at a speed of 100 tf to 100 tf, and the displacement and the residual displacement under applied force were measured. Displacement was measured by a winding type displacement meter (accuracy 0.1 mm, length 500.0 mm)
mm), and the displacement of the lower head was measured by placing the tip of the displacement gauge against the upper head. The residual displacement was calculated by the following equation by measuring the height of the specimen before and after the test. Remaining displacement = H−H ′ Here, H: height (mm) of the specimen before the test, H ′: height (mm) of the specimen immediately after unloading. b. Bending test: 50tf structure bending tester (use capacity 1
0tf), the test piece was supported by a 850 mm subvan, a 100 × 100 mm steel plate was placed at the center of the subban, and a load was applied to 10 tf at a speed of about 150 kgf / cm ² per minute. During the application, the load and the displacement at the center of the test piece were measured. The load was measured using a 10 tf load cell, and the displacement was measured using a winding displacement meter (accuracy 0.1 m).
m, inspection length 500.0 mm). The residual deflection was obtained from the measured value of the displacement after unloading the load. The results of the compression test and the bending test are shown in (Table 4) and (Table 5).

[Table 4]

[Table 5] As is clear from the results of Tables 4 and 5, it was found that the load could be absorbed without pulverization and the residual displacement was small. In addition, it was found that the residual displacement returned to its original value with the lapse of time, although there were individual differences. Further, since no break was confirmed in any of the bending tests, it was found that the shape stability was excellent and the durability was excellent.

(Embodiment 2) FIG. 4 is a sectional view of a wheel stop according to Embodiment 2 of the present invention. In FIG.
0 is the second embodiment in which the hollow portion has a honeycomb shape.
, A reference numeral 51 denotes a body of the vehicle stop, and 52 denotes a hollow portion formed in a honeycomb shape. The hollow portion was formed so as to be 30% of the entire cross-sectional area. 25 vol%, 35 vol%, 45 vol%, 5 vol%
Specimens were prepared at 5 vol%. As a result, 35 vol
%, 45 vol% of the test pieces were found to be excellent in mechanical strength.

[0016]

As described above, according to the present invention, the following excellent effects can be realized. According to the first aspect of the present invention, (1) a bollard can be manufactured by extruding a waste plastic such as a polyolefin or a saturated polyester by an extrusion molding method, and the waste plastic can be effectively used. (2) 1 molded integrally in parallel with the axial direction of the bollard body
With the above hollow portion, the weight of the bollard can be reduced and the raw material cost can be reduced. (3) Since the anchoring holes are provided vertically in the direction perpendicular to the axial direction of the bogie, the anchors can be fixed only by inserting the anchors, thereby improving the workability of the installation work. According to the invention of claim 2, in addition to the effect of the invention of claim 1, (4) the polycarbonate resin is compounded,
The mechanical strength such as the impact resistance of the vehicle stop can be improved, and the durability can be improved. (5) The heat resistance can be improved and deformation due to heat can be prevented even in summer. (6) The abrasion resistance can be improved, and the abrasion resistance can be improved depending on the vehicle when the vehicle is parked. According to the third aspect of the invention, in addition to the effect of the first aspect, (7) since the polystyrene copolymer is blended,
The cold resistance and mechanical strength of the car stop can be improved. (8) The processability of extrusion molding can be improved and the productivity can be improved.
According to the fourth aspect of the invention, in addition to the effects of the first to third aspects, (9) the whisker or the like is added to the waste plastic as a strength-enhancing agent, so that the mechanical strength of the car stop is improved. In particular, the shear strength can be improved and the durability can be improved.

[Brief description of the drawings]

FIG. 1A is a plan view of a wheel stop according to the first embodiment of the present invention. FIG. 1B is a side view of the wheel stop according to the first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the vehicle stop according to the first embodiment of the present invention.
Cross section of line

FIG. 3 is a schematic diagram of an extruder for a bogie according to the first embodiment of the present invention.

FIG. 4 is a sectional view of a wheel stop according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wheel stop 2 Main body 2a Weatherproof paint layer 3 Hollow part 4 Anchor insertion hole part 5 Extrusion molding machine 6 Molding material 7 Heater 8 Screw 9 Extrusion cylinder 10 Nozzle 11 Dice 12 Injection cylinder 13 Pressure source 14 Injection Plunger 15 Nozzle 16 Mold 17 Moving plate 18 Core support 19 Core 20 Flatbed 50 Wheel stop 51 of the second embodiment 51 Main body 52 Hollow portion

Claims (4)

[Claims] 1. A bogie installed in a pillow shape on the ground,
A bogie body extruded from waste plastic mainly composed of a thermoplastic resin such as polyolefin and / or saturated polyester, and one or more hollow portions integrally formed in the extrusion molding in parallel with the axial direction of the bogie body. And 1 pierced in a vertical direction perpendicular to the axial direction of the bogie body.
A car stop having the above-described anchor-insertion hole. 2. The waste plastic is added with 10 to 45 wt.
The wheelchair according to claim 1, wherein a polycarbonate resin is blended in the amount of 0.1% by weight. 3. The waste plastic is added with 10 to 35 wt.
2. The bollard according to claim 1, wherein a polystyrene copolymer is contained. 4. The waste plastic is 3 to 15 wt%.
Whisker and / or 3-15 wt% carbon fiber, glass fiber, metal fiber, short fiber such as ceramic fiber, or a strength reinforcing agent comprising a mixture thereof, or thermosetting containing these strength reinforcing agents The bollard according to any one of claims 1 to 3, wherein a crushed resin composite material is blended.