KR20090114625A - A bollard for absorbing shock - Google Patents

Abstract

PURPOSE: A shock absorbing safety bollard is provided to minimize the damage and the deformation of the bollard cause by impact and to minimize the damage of an assailant. CONSTITUTION: A shock absorbing safety bollard is composed of a support plate(2), an outer body(4), a ring band(6), a head(8), an inner body(10), and a core member(12). The support plate is laid in the bottom of the ground. The support plate has a stepped surface in the center. A backing projection is formed to be extended on the circumference of the lower part of the outer body. The backing projection is combined over the stepped surface of the support plate and is erectly installed. The outer body absorbs the shock transmitted from the outside secondarily. The ring band is installed on the outer circumference of the outside body. The ring band has self-elasticity to absorb and damper the initial shock load and transmits the shock load to the outer body. The head is installed at the upper part of the outer body. The head has self-elasticity to absorb and damper the initial shock load and transmits the remaining shock load to the outer body. The inner body has the hardness higher than the hardness of the outer body. The inner body uniformly disperses and dampers the remaining shock load transmitted from the outer body. The core member is installed in the center of the inner body to keep the skeleton of the bollard.

Description

Shock absorbing safety bollard {A bollard for absorbing shock}

The present invention relates to a bollard installed at the boundary between the driveway and the sidewalk to protect the pedestrian from the vehicle at the time of parking or stopping, and more particularly, industrial waste such as automobile waste tires The present invention relates to a shock absorbing safety bollard that minimizes the deformation, damage and damage of the bollard itself by absorbing the impact applied from the outside by recycling the same in three dimensions, and minimizes the impact of the impacted object or the perpetrator.

In general, a vehicle-preventing strut (hereinafter referred to as a 'bollard') is installed at a crosswalk, sidewalk, park entrance, bicycle boundary, and other side of the pedestrian. The bollard (bollard) does not interfere with the progress of the vehicle, controls the vehicle entry or prevents the safety of pedestrians in advance, and functions to prevent the damage of the sidewalk.

Conventional bollards, such as granite having a high strength of granite, as well as PE and steel combinations, stainless materials are mainly constructed on the road. These steel bollards or granite bollards are not easy to remove once installed, and have the disadvantages of being easily deformed or corroded. In addition to being damaged, there is a problem that the bollard 10 is also broken and turned into a monster. In addition, pedestrians, especially those with physically incapable handicapped persons or children, may act as obstacles to serious injury or injury when they are knocked over or tripped over.

In order to solve the problems of the conventional stiff bollard, a conventional bollard made of an elastic material such as synthetic rubber has been proposed to attenuate the impact of the vehicle collision to some extent.

1 is a perspective view showing the configuration of a bollard according to the prior art.

As shown in the figure, the bollard 100 includes a fixing member 102 which is buried in the ground of a place to be installed to suppress the entry of a vehicle and serves as a base; Protruding from the upper portion of the fixing member 102 to suppress the entry of the vehicle 104 and formed inside the pillar 104 is fixed to the upper end of the fixing member 102 by a bolt to the collision or pedestrian of the vehicle When the bump is made of an elastic body 106 to bend the column.

The bollard is effective to prevent the damage of the car or the accident of pedestrians by returning to the original state when the external force is removed after the column is bent in the collision, but the bollard is on the side of the square-shaped fixing member buried in the ground Because it is configured to not fall sideways or soak up in the event of a collision, it is easy to fall down or soar when the ground is soft or impacts, thus losing its original function and damaging its aesthetics. In addition, since the entire pillar is formed of a nylon resin, it is hard, and the degree of rigidity becomes more severe with changes in temperature and time, and there is a problem that the color is changed while there is a possibility of being easily broken even with a small impact.

As an elastic bollard cited in the literature, Korean Patent Publication No. 10-0535236 is a bollard in which a spherical articulation is installed on an upper surface support and a body tube is supported on a spherical articulation by a spring pressure. This bollard is unstable in posture when the installation posture is unstable and tilted. The bollard of Utility Model Registration Publication No. 20-0347275 is a bollard in which the entire tube is made of a thick flexible material and a coil spring is inserted into the flexible tube to fill the entire lumen and lacks economic efficiency, light weight, and flexibility. The bollards of Utility Model Registration Publication 20-0366989 and Utility Model Registration Publication 20-0351160 insert a coil spring that connects the ground support and the superstructure to the center free joint skeletal structure and supports the superstructure on the ground support around the joint skeleton. The coil spring is assembled outside the bollard, making it unsuitable for road installations.

On the other hand, as described above, conventional elastomeric bollards have a problem that cannot overcome the problem of maintaining the shape by a rigid material, which is a requirement inherent in the product characteristics. In particular, conventional rubber bollards are made of natural materials, which not only waste unnecessary resources, but also are expensive, and are expensive to install. Some PE and rubber products use recycled materials, but also have manufacturing capacity. This lack of realistic problems that are easily broken due to the decrease in hardness.

Therefore, the present invention has been proposed to solve the above problems, the outer body is made of a material of low hardness and the inner body is made of a material of high hardness to maintain the shape of the bollard and at the same time was shocked from the outside When the shock is absorbed in three dimensions, it minimizes the deformation, damage, and damage of the product itself caused by the applied shock, and provides shock absorbing safety bollard to minimize the damage caused by the impacted impactor or the perpetrator. The purpose is.

In addition, the present invention has another object to provide a shock-absorbing safety bollard that can significantly reduce the production cost by utilizing the synthetic rubber components extracted from industrial wastes, such as waste tires of the vehicle as the main body of the bollard.

The present invention to achieve the above object, the support plate embedded in the bottom of the ground; An outer body assembled to the support plate and installed upright, and secondarily absorbing the impact load transmitted from the outside; A ring band installed at an outer circumferential surface of the outer body and having a self-elasticity, having a hardness lower than that of the outer body, absorbing and attenuating the initial impact load, and transmitting a residual impact load to the outer body; A head installed on an upper portion of the outer body and having its own elasticity, having a hardness lower than that of the outer body, absorbing and attenuating the initial impact load, and transmitting a residual impact load to the outer body; An inner body having a hardness lower than that of the outer body and installed therein, which uniformly disperses and attenuates the residual impact load transmitted from the outer body; And provided in the inner body provides a shock absorbing safety bollard including a core material for maintaining the skeleton.

As described above, the present invention has the following effects.

First, the ring band and head which absorbs the impact load applied from the outside are made of low hardness material and absorb and attenuate the impact load through this, and secondly, the residual impact load through the inner body with high hardness. By absorbing and attenuating, the impact load can be distributed in three dimensions to prevent deformation, damage, breakage and other losses caused by the impact.

Second, when an external shock is applied, not only the bollard of the present invention, which is an impact damage product, but also a vehicle or a pedestrian, which is an impact damage product, can be safely protected from an impact.

Third, by using the rubber components extracted from the waste tires, which are industrial wastes, as main raw materials, manufacturing costs can be greatly reduced and waste resources can be recycled.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIG. 2.

The shock absorbing safety bollard according to the present invention absorbs and attenuates the external impact load sequentially through the outer body and the inner body, thereby protecting pedestrians from the vehicle safely through the three-dimensional shock absorbing effect, and minimizing damage to the vehicle as the damage. It is implemented to recycle waste resources.

Figure 2 is a partial cutaway perspective view showing an embodiment of the shock absorbing safety bollard according to the present invention, Figure 3 is a front sectional view of Figure 2, Figure 4 is the impact load when an external shock is applied to the bollard of the present invention This is a state diagram showing the absorption and attenuation process.

As shown in the figure, the present invention includes a support plate (2) embedded in the bottom of the ground and having a hollow portion step surface (2a) in the center; An outer body (4) formed on the outer peripheral surface of the lower end such that the support protrusion is extended to be installed so as to be installed to be coupled upright over the hollow stepped surface (2a) of the support plate (2), and secondarily absorbs the impact load transmitted from the outside; A ring band 6 installed on the outer circumferential surface of the outer body 4 at intervals of vertical height, having a self-elasticity, absorbing and attenuating the initial impact load, and transmitting a residual impact load to the outer body 4; A head 8 installed on an upper portion of the outer body 4 to absorb and attenuate the initial impact load with its own elasticity, and to transfer the remaining impact load to the outer body 4; An inner body 10 having a hardness higher than that of the outer body 4 and installed therein, for uniformly dispersing and attenuating the residual impact load transmitted from the outer body 4; And it is embedded in the central portion of the inner body 10 includes a core material 12 for maintaining the skeleton.

In the embodiment of the present invention, the core material 12 employs a letter consisting of an angle.

Since the outer body 4, the ring band 6 and the head 8 are directly exposed to the climatic environment and impact, synthetic materials of ethylene propylene rubber (EPDM) and natural rubber (NR) can be most effectively replaced. use. The ring band (6) and the head (8) gives a soft characteristic to cause the micro-vibration and repulsion characteristics when subjected to external shock to absorb the impact as much as possible to attenuate the size of the actual shock shock by the impact of impact and damage shock Deformation and breakage can be minimized.

The outer body 4 is given a relatively hard characteristic to uniformly distribute the impact load transmitted through the ring band 6 and the head 8, to maintain the overall shape.

The support plate 2 and the inner body 10 stably maintains the shape and position of the bollard and at the same time sufficiently withstands and absorbs the residual impact load transmitted through the outer body 4 to prevent deformation, damage or breakage of the bollard. I could do it.

Physical properties to be secured for each configuration described above are shown in Table 1 below.

Table 1

Item unit Property standard  Remarks Ring band (6), head (8) Outer Body (4) Support plate (2), inner body (10) Material classification EPDM, NR Synthetic Rubber EPDM rubber Polyester Cord Yarn Fiber, NR Synthetic Rubber The tensile strength kgf / ㎠ 15 or more over 10 - Elongation % 50 or more 30 or more - Tear strength kgf / ㎠ 5 or more 3.5 or more Ozone resistance crack No Ozone concentration 40 ± 5 Test temperature 30 ± 1 ℃ Hardness HDA 30 ± 10 80 ± 10 60 ± 10

In order to secure the physical properties, the outer body 4 has 60 to 75 parts by weight of ethylene propylene rubber (EPDM) having excellent ozone resistance, weather resistance, aging resistance, heat resistance, and cold resistance, for forming a physical shape of a rubber product. It is prepared by mixing 15 to 22 parts by weight of clay or hard coal, 1.5 to 2 parts by weight of zinc oxide, 0.5 to 1 part by weight of reaction accelerator, and 0.8 to 1.5 parts by weight of sulfur. The outer body 4 made of the composition exhibits a hardness of 80 ± 10, and maintains the overall shape of the bollard to distribute the impact transmitted from the ring band 6 and the head 8 in an equal distribution.

The ring band 6 and the head 8 are 50 to 65 parts by weight of ethylene propylene rubber (EPDM), 12 to 20 parts by weight of natural rubber (NR), 12 to 20 parts by weight of clay or hard coal, and 1.5 to 2 parts by weight of zinc oxide. It is prepared by mixing 0.4 to 0.8 parts by weight of stearic acid, 1.6 to 2 parts by weight of anti-aging agent, 0.5 to 1 part by weight of reaction accelerator, and 0.8 to 1.5 parts by weight of sulfur. The ring band 6 and the head 8 made of the above composition exhibits a hardness of 30 ± 10 so as to absorb the impact of the collision as much as possible.

In the composition of the outer body 4, the ring band 6, and the head 8, the admixtures of the various components added to ethylene propylene rubber (EPDM) and natural rubber (NR) commonly have specified properties of rubber products. As an additive to ensure stable physical shape while securing the compounding ratio, the compounding ratio is to secure the required physical properties. When the compounding ratio exceeds or is less than the compounding ratio suggested by the admixtures, a product satisfying the properties including hardness can be formed. none.

The support plate (2) and the inner body (10) uses a material obtained by synthesizing the ratio of waste polyester cord yarn fiber, recycled rubber powder, and natural rubber (NR) 3: 1: 1. At this time, the waste polyester cord yarn fibers are first precipitated polyester cord yarn fibers in a sodium sulfonate (SO ₃ Na) solution diluted in a ratio of water 1: 5 before blending or the sodium sulfonate polyester cord yarn After spraying on the fiber, dry and mix.

As another example of the support plate 2 and the inner body 10, with respect to 100 parts by weight of the polyester cord yarn fibers, 50 parts by weight of recycled waste tire rubber powder, 25 ± 5 parts by weight rubber-based binder, polyester cord yarn fibers In order to maintain and reinforce the viscosity, 0.5 ± 2 parts by weight of a surface active material sodium sulfonate may be mixed.

The composition method of the inner body 10 and the support plate 2 made of the above composition is as follows.

First, polyester cord yarn fibers are first precipitated in a solution of sodium sulfonate (SO ₃ Na) diluted in a ratio of water 1: 5, or the sodium sulfonate is sprayed onto polyester cord yarn fibers and then dried. 50 parts by weight of the waste tire rubber powder, 25 ± 5 parts by weight of the rubber-based binder, 0.5 ± 2 sulfonic acid sodium sulfonate as a surface active material for maintaining the viscosity and reinforcement of the polyester cord yarn fiber Mix by weight to prepare a cord yarn fiber mixture. The cord yarn fiber mixture, rubber powder and natural rubber are mixed in a ratio of 3: 1: 1. At this time, the polyester cord yarn fibers as the main material of the support plate 2 and the inner body 10 is made of pulverized particles having a diameter of 0.01 ~ 3mm generated when the waste tire is crushed.

The waste polyester cord yarn fiber, which is the main material of the support plate 2 and the inner body 10 of the present invention, is recycled as it is, without reprocessing 0.01 ~ 3.0mm diameter crushed particles that are generated in series during the crushing of waste tires. When the rubber-based binder exceeds 30 parts by weight with respect to 100 parts by weight of the waste polyester cord yarn fiber, the specific gravity becomes light, so that the impact absorption function is improved, but the pressure resistance is lowered, and when the weight is 20 parts by weight or less, the specific gravity is increased and the impact absorption function is increased. Since it falls, it is preferable to add in the ratio within the said range.

The inner body 10 having the above composition exhibits a hardness of 60 ± 10 to maintain the shape and position of the bollard at the same time, and the impact load transmitted from the ring band 6 and the head 8 and the outer body 4. Sufficient to withstand

The inner body 10 smoothly absorbs and disperses the residual impact load transmitted from the outer body 4 by the fine open cells formed during the tangling of the waste polyester cord yarn fiber particles. It is possible to prevent the deformation and damage of the car, and to minimize the damage to the impact car or pedestrian.

The support plate (2) to ensure a hardness of 60 ± 10 to sufficiently cope with the pressure of the earth and sand deposited on the upper support plate (2).

According to the present invention configured as described above, the ring band 6 and the head 8, which are primarily subjected to an impact from the outside during a collision, extinguish or absorb the 30% or more of the impact load in an instant or repulsive elasticity and the remaining impact The load is transmitted to the outer body (4). The outer body 4 is distributed to the inner body 10 by dispersing the residual impact load transmitted therein to the equal distribution impact load. The inner body 10 is absorbed by the impact absorbing properties constituting it and a large amount of fine open pores formed between the rubber particles of the waste polyester cord yarn fibers as foam foam (form) absorbs the water as Will be.

Next, the installation process of the present invention will be described.

First, the position to be installed is selected, the pit is dug 400 mm deep from the construction machine surface (ground), and the pit bottom surface is evenly leveled. Flatten the rubble with a diameter of Ø 20 to 30mm with 100mm thick sand or general soil on the bottom of the pit and chop 3-4 times with hand temper. At this time, be careful not to bend or void on the top surface of the compacted rubble. The lower end of the outer body (4) is fitted into the hollow hole (2a) of the support plate 2 to bind and stand upright to maintain the overall position and vertical state of the bollard. At this time, the bottom surface of the outer body 4 and the support plate 2 is to be in close contact with the upper surface of the rubble. Next, the soil is filled in the upper surface of the support plate (2). Filling The soil is filled with layer compaction using a hand temper, moistened 100 mm thick. Finally, install the sidewalk block, which is a road surface finishing material, by checking the presence of abnormality in the fixed state by shaking the bollard to the front, back, left and right after finishing the construction surface, which is the finish of the pit filling.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

1 is a perspective view showing the configuration of a bollard according to the prior art.

Figure 2 is a partially cut perspective view showing an embodiment of the shock absorbing safety bollard according to the present invention.

3 is a front sectional view of FIG.

Figure 4 is an operational state diagram showing the absorption and attenuation process of the impact load when an external shock is applied to the bollard of the present invention.

Claims (7)

A support plate embedded in the bottom of the ground; An outer body assembled to the support plate and installed upright, and secondarily absorbing the impact load transmitted from the outside; A ring band installed at an outer circumferential surface of the outer body and having a self-elasticity, having a hardness lower than that of the outer body, absorbing and attenuating the initial impact load, and transmitting a residual impact load to the outer body; A head installed on an upper portion of the outer body and having its own elasticity, having a hardness lower than that of the outer body, absorbing and attenuating the initial impact load, and transmitting a residual impact load to the outer body; An inner body having a hardness lower than that of the outer body and installed therein, which uniformly disperses and attenuates the residual impact load transmitted from the outer body; And Core material installed in the inner body to maintain the skeleton Shock absorbing safety bollard including. The method of claim 1, The outer body is manufactured by synthesizing ethylene propylene rubber (EPDM) having excellent ozone resistance, weather resistance, aging resistance, heat resistance, and cold resistance, and natural rubber having excellent abrasion resistance, processability, and elasticity, and has a hardness (IZ) of 80 ± 10. Absorption safety bollard made with. The method of claim 1, The ring band and head are manufactured by synthesizing ethylene propylene rubber (EPDM) having excellent ozone resistance, weather resistance, aging resistance, heat resistance, and cold resistance, and natural rubber having excellent wear resistance, processability, and elasticity, and having a hardness (IZ) of 30 ± 10. Shock absorbing safety bollard, characterized in that. The method according to any one of claims 1 to 3, The inner body and the support plate is manufactured by synthesizing the polyester cord yarn fiber and recycled rubber powder and natural rubber extracted from the waste tire, the impact absorption safety bollard, characterized in that the hardness is 60 ± 10. The method according to any one of claims 1 to 3, The inner body and the support plate are 100 parts by weight of polyester cord yarn fiber, 50 parts by weight of recycled waste tire rubber powder, 25 ± 5 parts by weight rubber-based binder, surface active material for maintaining the viscosity and reinforcement of polyester cord yarn fiber Sodium sulfonic acid is prepared by mixing 0.5 ± 2 parts by weight, the impact absorption safety bollard, characterized in that the hardness is 60 ± 10. The method of claim 5, wherein Polyester cord yarn fibers as the main material of the inner body is shock absorbing safety bollard, characterized in that consisting of pulverized particles having a diameter of 0.01 ~ 3mm generated during the crushing of waste tires. The method of claim 1, Shock absorbing safety bollard, characterized in that the core made of the angled angle.

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