Height-adjustable speed bump system and structural design method for speed bump system

Abstract

The present invention relates to a height-adjustable speed bump system and a structural design method for a speed bump system. The speed bump is configured to lower consistently at a preset speed and time to adjust its height, thereby minimizing impact on vehicles entering at or below the regulated speed, imposing a penalty of impact on vehicles entering at or above the regulated speed, and converting loads applied by vehicles into energy to generate electricity. The invention provides a height-adjustable speed bump system and a structural design method for a speed bump system comprising: an installation space formed on the road surface; a speed bump including a first speed bump installed at an angle on one side in the width direction of the installation space to forcibly reduce the driving speed of a vehicle, and a second speed bump installed at an angle on the other side in the width direction of the installation space; at least one damper section disposed below the speed bump and on the installation space; and at least one power generation device disposed below the speed bump and on the installation space. It is characterized by including at least one generator connected to a power generation device and performing power generation by the load of the speed bump.

Description

Technology Field

[0001] The present invention relates to a height-adjustable speed bump system and a method for designing the structure of a speed bump. More specifically, the invention relates to a height-adjustable speed bump system and a method for designing the structure of a speed bump system, wherein the speed bump is configured to descend at a constant speed and time to adjust its height, so that for vehicles entering at a speed below the regulated speed, it descends in a flat state identical to the ground, thereby minimizing impact for vehicles entering within the regulated speed range, and for vehicles entering at a speed exceeding the regulated speed, it passes through a protruding speed bump before it fully descends, thereby imposing a penalty that causes impact to the vehicle, and the load applied by the vehicle when passing through the speed bump is converted into energy to produce electricity. Background Technology

[0003] Generally, speed bumps are installed on the road surface where vehicles travel to forcibly reduce the entry and driving speeds of vehicles in areas such as schools, residential areas, high-traffic zones, child protection zones, and sections with frequent traffic accidents, for the safety of pedestrians.

[0004] By installing speed bumps on the road surface, it is possible to prevent speeding by vehicles traveling in certain sections of the road and to restrict the entry of vehicles traveling in certain areas.

[0005] These speed bumps are formed long in the width direction of the road and protrude in an arc shape in the length direction of the road, and are manufactured from asphalt, cement, steel plates, synthetic resins, etc. and fixedly installed on the road surface.

[0006] Here, the speed bump is formed to protrude upward from the road surface at a predetermined height, thereby applying an impact corresponding to the entry speed of the entering vehicle.

[0007] That is, when the entry speed of a vehicle entering a speed bump is within the speed limit range, a certain impact is applied to the vehicle passing through the speed bump, and when the entry speed of a vehicle entering a speed bump exceeds the speed limit range, an impact greater than the certain impact is applied to the vehicle passing through the speed bump.

[0008] For example, a standard speed bump forcibly controls the vehicle's speed to drive at a low speed of 30 km / h or less (regulated speed), so ordinary drivers enter and pass through the speed bump at the regulated speed, but some drivers enter and pass through at a speed exceeding the regulated speed.

[0009] Thus, there is a problem in that vehicles entering at a speed exceeding the speed limit and vehicles entering at the speed limit differ only in the strength or weakness of the impact when entering and passing over the speed bump, and some degree of impact is applied regardless of whether the vehicle's entry speed is within the speed limit.

[0010] Therefore, there is a need for a method to differentiate the impact generated when passing over speed bumps by distinguishing between vehicles entering within the speed limit range and vehicles entering at excessive speed.

[0011] In other words, there is a need for a measure that minimizes the impact on vehicles when passing over speed bumps for vehicles entering within the speed limit range, unlike vehicles entering beyond the speed limit range, and imposes a penalty on vehicles entering beyond the speed limit range so that the impact of speeding is applied when passing over speed bumps, unlike vehicles entering within the speed limit range. Prior art literature

[0013] Republic of Korea Registered Patent No. 10-2620639 The problem to be solved

[0014] The present invention aims to solve the above-mentioned problems by providing a speed bump system with adjustable height and a method for designing the structure of the speed bump system, wherein the speed bump is configured to descend at a constant speed and time to adjust its height, thereby allowing vehicles entering at a speed below the regulated speed to descend in a flat state identical to the ground, thereby minimizing impact for vehicles entering within the regulated speed range, and imposing a penalty of impact on vehicles entering at a speed exceeding the regulated speed by passing through the protruding speed bump before it fully descends, and converting the load applied by the vehicle when passing the speed bump into energy to produce electricity.

[0015] Furthermore, the technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0017] To achieve the above-mentioned purpose, the height-adjustable speed bump system according to the present invention comprises: an installation space formed on the road surface; a speed bump including a first speed bump installed at an angle on one side in the width direction of the installation space to forcibly reduce the driving speed of a vehicle, and a second speed bump installed at an angle on the other side in the width direction of the installation space; at least one damper part disposed on the lower part of the speed bump and on the installation space; at least one power generation device disposed on the lower part of the speed bump and on the installation space; and at least one generator connected to the power generation device and performing power generation by the load of the speed bump.

[0018] As one embodiment, the speed bump may be configured to descend at a constant speed or time.

[0019] In another embodiment, the first speed bump and the second speed bump may be formed as straight plates.

[0020] In one embodiment, each end facing each other of the first speed bump and the second speed bump is provided with a height adjustment part for adjusting the height of the first speed bump and the second speed bump, and each other end of the first speed bump and the second speed bump can be rotatably connected to the floor surface of the installation space by a rotary joint.

[0021] As a specific embodiment, the height adjustment member may include a height adjustment piece formed protruding toward the second speed bump on each side of the end of the first speed bump, a movable hole formed longitudinally through the side of each height adjustment piece, and a movable projection formed protruding toward both sides of the end of the second speed bump, which is slidably coupled to the movable hole.

[0022] In one embodiment, the damper portion may include a damping member for pressing the lower part of a speed bump that has been lowered by the load of a vehicle to return it to its initial position, and an elastic member to which the damping member is coupled.

[0023] In another embodiment, the power generation device includes a rack gear connected to the lower part of the speed bump and positioned vertically toward the installation space, and a pinion gear that is rotatably engaged with the rack gear and connected to the end of the generator, and can generate power through the generator by the rotation of the pinion gear engaged with the rack gear as the speed bump lowers due to the load of the vehicle and the speed bump rises after the vehicle passes.

[0024] The structural design method of a height-adjustable speed bump system according to the present invention comprises: a step of setting the equation of motion of the speed bump; a step of calculating the load torque generated on the speed bump as a vehicle enters; a step of calculating the rotation angle of the speed bump; a step of calculating the height of the speed bump descending according to the entry time of the vehicle entering the speed bump; and a step of calculating a damping value for the speed bump to descend completely relative to the ground.

[0025] As one embodiment, a structural design method for a height-adjustable speed bump system characterized by setting the equation of motion using the following formula.

[0027] Formula (1)

[0029] J: Moment of inertia

[0030] b, k: Damping value and stiffness value of the damper section

[0031] m : Mass of the vehicle

[0032] g : gravitational acceleration

[0033] l c : Vehicle travel distance

[0034] F b : The weight of the second speed bump

[0035] As another embodiment, a structural design method for a height-adjustable speed bump system characterized by calculating the load torque by the following formula.

[0037] Formula (2)

[0039] mgvt : T (vehicle load torque)

[0040] As one embodiment, a structural design method for a height-adjustable speed bump system characterized by calculating the rotation angle of the speed bump using the following formula.

[0042] Formula (3)

[0043] As another embodiment, a structural design method for a height-adjustable speed bump system characterized by calculating the height of the speed bump that descends according to the vehicle entry time using the following formula.

[0045] Formula (4)

[0047] : Length of the arc drawn by the height adjustment part of the first speed bump with respect to time

[0049] At this time, the time required for the vehicle's front wheels to pass the first speed bump (t f )Is,

[0051] Formula (5)

[0053] And,

[0054] Since the first speed bump is fully extended, formula (4) must satisfy the relationship of the following formula (6), and

[0056] Formula (6)

[0058] Therefore, after substituting formula (5) into formula (4), Applying Taylor's theorem up to the cube of x, we obtain a quadratic expression in b as follows, and

[0060] Formula (7)

[0062] In the above formula (7), the stiffness value (k) is derived from the static displacement relationship with respect to the vehicle load,

[0064] Formula (8)

[0066] Decided as,

[0068] By substituting formula (8) into formula (7) and simplifying, l in formula (7) is eliminated, and the following is simplified.

[0070] Formula (9)

[0072] A structural design method for a height-adjustable speed bump system, characterized by calculating a damping value for the speed bump to fully descend relative to the ground using the following formula as one embodiment from the solution of formula (9).

[0074] In the above formula (9),

[0076] And,

[0078] Formula (10) Effects of the invention

[0080] As described above, the present invention, having the above configuration, is configured such that the speed bump gradually descends at a constant speed and time regardless of the vehicle's entry speed and passing speed, thereby allowing the height to be variably adjusted. When a vehicle entering and passing through the speed bump enters at a speed below the regulated speed, the speed bump descends to a flat state equal to the ground, thereby minimizing impact on the vehicle. When a vehicle entering and passing through the speed bump exceeds the regulated speed, the vehicle passes through the speed bump in a protruding form before it is completely lowered, thereby imposing a penalty that causes impact on the vehicle.

[0081] In addition, it is possible to generate electricity by converting the lowering of the speed bump caused by the load applied when a vehicle enters and passes through it into energy, and to generate maximum electricity by converting the load applied by the vehicle into energy through the shape and structural design of the speed bump. It can be utilized as a power supply device that replaces existing speed bumps installed on the road surface and is connected to road facilities to provide electricity generated when a vehicle passes through it. Furthermore, since the lowering time of the speed bump is uniform, the height is lowered at the same speed for all vehicles entering and passing through the speed bump, thereby providing a reward to drivers who pass through the speed bump while complying with the speed limit, which has the effect of improving driving satisfaction.

[0082] Furthermore, the effects obtainable from the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0084] FIG. 1 is a side cross-sectional view schematically illustrating a height-adjustable speed bump system according to a first embodiment of the present invention. FIG. 2 is a schematic plan view illustrating a height-adjustable speed bump system according to a second embodiment of the present invention. FIGS. 3 and 4 are schematic diagrams illustrating the process in which the height of a speed bump changes when a vehicle enters and passes within a regulated speed range in a height-adjustable speed bump system according to the first embodiment of the present invention. FIGS. 5 and 6 are schematic diagrams illustrating the process in which the height of a speed bump changes when a vehicle enters and passes through a height-adjustable speed bump system according to a first embodiment of the present invention at a speed exceeding the prescribed speed range. FIG. 7 is a side view schematically showing a first speed bump among speed bumps to explain a structural design method for a height-adjustable speed bump system according to a first embodiment of the present invention. FIG. 8 is a side view showing the installation location of a damper part in a structural design method of a height-adjustable speed bump system according to the first embodiment of the present invention. FIG. 9 is a side cross-sectional view schematically illustrating a height-adjustable speed bump system according to a second embodiment of the present invention. Specific details for implementing the invention

[0085] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Furthermore, these embodiments are not intended to limit the scope of the present invention but are presented merely as examples, and various modifications are possible within the scope of the technical essence thereof.

[0086] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in the detailed description.

[0087] However, this is not intended to limit the invention to specific embodiments and should be understood to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each figure.

[0088] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0089] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0090] In this specification, the entry speed of a vehicle may refer to the speed at which it enters a speed bump system, and the passing speed or driving speed of a vehicle may refer to the passing speed or driving speed of a vehicle passing through the speed bump system after entering the speed bump system, at the same speed as the entry speed. Accordingly, in this specification, the entry speed, passing speed, and driving speed of a vehicle may have the same meaning, but are not limited thereto.

[0092] (First embodiment)

[0093] FIG. 1 is a side cross-sectional view schematically illustrating a height-adjustable speed bump system according to a first embodiment of the present invention. FIG. 2 is a plan view schematically illustrating a height-adjustable speed bump system according to a second embodiment of the present invention. FIG. 3 and FIG. 4 are diagrams schematically illustrating the process in which the height of a speed bump varies when a vehicle enters and passes within a regulated speed range of the height-adjustable speed bump system according to the first embodiment of the present invention. FIG. 5 and FIG. 6 are diagrams schematically illustrating the process in which the height of a speed bump varies when a vehicle enters and passes beyond a regulated speed range of the height-adjustable speed bump system according to the first embodiment of the present invention. FIG. 7 is a side view schematically illustrating a first speed bump among the speed bumps to explain the structural design method of the height-adjustable speed bump system according to the first embodiment of the present invention. FIG. 8 is a side view showing the installation location of a damper part in the structural design method of the height-adjustable speed bump system according to the first embodiment of the present invention.

[0094] Hereinafter, a height-adjustable speed bump system and a structural design method for a speed bump system according to the first embodiment of the present invention will be described.

[0095] As illustrated in FIGS. 1 and 2, the height-adjustable speed bump system (1a) according to the first embodiment of the present invention can be installed on the road surface of a road where a vehicle travels in order to forcibly reduce the driving speed of the vehicle in areas such as schools, residential areas, areas with high pedestrian traffic, child protection zones, and sections with frequent traffic accidents, in order to ensure pedestrian safety and prevent traffic accidents.

[0096] A height-adjustable speed bump system (1a) according to the first embodiment of the present invention may include an installation space (3) formed on the road surface, a speed bump (10), a damper section (30), a power generation device (50), and a generator (70).

[0097] The above installation space (3) is formed on the road surface, and can be formed as a predetermined space for installing a speed bump (10) to forcibly reduce the driving speed of a vehicle.

[0098] Here, the installation space (3) can be formed with a certain width in the longitudinal direction of the road and extending in the width direction of the road.

[0099] The above speed bump (10) may include a first speed bump (10a) installed at an angle on one side in the width direction of an installation space (3) formed on the road surface, and a second speed bump (10b) installed at an angle on the other side in the width direction of the installation space (3) and positioned to correspond to the first speed bump (10a).

[0100] Here, the first speed bump (10a) and the second speed bump (10b) can be formed as straight plates.

[0101] That is, the first speed bump (10a) and the second speed bump (10b) can be formed as straight plates of a predetermined length to correspond to the width and length of the installation space (3) formed on the road surface.

[0102] Accordingly, the speed bump (10) including the first speed bump (10a) and the second speed bump (10b) can be arranged in a roughly triangular shape on the upper part of the installation space (3).

[0103] Meanwhile, the installation space (3) formed on the road surface can be formed with a double structure.

[0104] Specifically, the installation space (3) formed on the road surface may include a first installation space (3a) where a first speed bump (10a) and a second speed bump (10b) are installed, and a second installation space (3b) formed on the first installation space (3a) where a damper part (30), a power generation device (50), and a generator (70) are arranged.

[0105] Accordingly, the first installation space (3a) is configured such that the first speed bump (10a) and the second speed bump (10b) are installed, and the height is adjusted so that the angle of inclination varies according to the passing speed of a vehicle entering and passing through the speed bump (10), and the second installation space (3b), which is formed on the inner bottom surface of the first installation space (3a) and is formed to be smaller in size than the first installation space (3a), may have a damper part (30), a power generation device (50), and a generator (70) placed therein.

[0106] One end of the first speed bump (10a) and one end of the second speed bump (10b) opposite to the one end of the first speed bump (10a) can be connected to each of the two edges in the width direction of the first installation space (3a) by means of a rotation joint (15) so that idle rotation is possible.

[0107] Accordingly, each one end of the first speed bump (10a) and the second speed bump (10b) that is positioned downward is connected to each of the two edges in the width direction of the first installation space (3a) by a rotation joint (15), so that when a vehicle load is generated, the height of the speed bump (10) can be varied by idling around the rotation joint (15).

[0108] Here, the first speed bump (10a) and the second speed bump (10b) facing the first speed bump (10a) may be provided with a height adjustment part (13) for adjusting the overall height of the speed bump (10) while adjusting the angle of inclination.

[0109] Specifically, the height adjustment part (13) may include a height adjustment piece (13a) that is formed to protrude toward the second speed bump (10b) on each side of the other end of the first speed bump (10a) corresponding to the width of the road, and a long hole-shaped moving hole (13b) formed through the side of each height adjustment piece (13a) in the longitudinal direction.

[0110] And, the height adjustment part (13) may include a movable projection (13c) that is formed protrudingly on each side of the other end of the second speed bump (10b) facing the first speed bump (10a), and is movably coupled to each movable hole (13b) formed in the height adjustment piece (13a).

[0111] Accordingly, as the moving projection (13c) coupled to the moving hole (13b) moves forward and backward in the longitudinal direction of the moving hole (13b) within the moving hole (13b), the height of the first speed bump (10a) and the second speed bump (10b) can be raised or lowered from the ground.

[0112] Here, the length of the second speed bump (10b) corresponding to the width of the road can be formed to correspond to the length between each height adjustment piece (13a) of the first speed bump (10a).

[0113] Accordingly, the other end of the second speed bump (10b) can be installed by being inserted between each height adjustment piece (13a) that is formed protruding from the other end of the first speed bump (10a).

[0114] Meanwhile, the sum of the widths of the first speed bump (10a) and the second speed bump (10b) corresponding to the length of the road can be formed to correspond to the width of the installation space (3).

[0115] Additionally, the length of the moving hole (13b) through which the moving projection (13c) moves is preferably such that the first speed bump (10a) and the second speed bump (10b) can descend completely toward the ground of the road and become flat, just like the ground, but is not limited thereto.

[0116] Thus, the height adjustment part (13) connects the other end of the first speed bump (10a) and the other end of the second speed bump (10b) facing the other end of the first speed bump (10a), and when the first speed bump (10a) and the second speed bump (10b) rotate in the direction facing each other based on each rotation joint (15) due to the load of a vehicle entering and passing through the speed bump (10), the facing part of the first speed bump (10a) and the second speed bump (10b) descends toward the road surface, thereby allowing the angle of inclination of the speed bump (10) and the height of the speed bump (10) to be adjusted.

[0117] Additionally, when the load is removed by passing the vehicle over the speed bump (10), the first speed bump (10a) and the second speed bump (10b) rotate in opposite directions relative to the rotation joint (15) by the pressure of the damper part (30), so that the facing parts of the first speed bump (10a) and the second speed bump (10b) rise upward from the road surface, thereby allowing the angle of inclination and the height of the speed bump (10) to be adjusted.

[0118] In one embodiment of the present invention, a height adjustment piece (13a) and a moving hole (13b) are formed on the first speed bump (10a), and a moving projection (13c) is formed on the second speed bump (10b), and the height is adjusted by adjusting the angle of inclination of the speed bump as the moving projection (13c) moves on the moving hole (13b). However, it is also possible to form a moving projection (13c) on the first speed bump (10a) and form an adjustment piece and a moving hole (13b) on the second speed bump (10b), and as long as the angle of inclination of the speed bump (10) can be adjusted to adjust the overall height, the structure of the height adjustment part (13) is not limited thereto and can be modified in various ways.

[0119] The above damper part (30) is positioned on the lower part of the speed bump (10) and on the installation space (3), and may be provided with at least one or more.

[0120] That is, the damper section (30) connects the lower surface of the first speed bump (10a) and the second installation space (3b), and may be provided in multiple units spaced apart at regular intervals along the length direction of the first speed bump (10a).

[0121] Specifically, one end of the damper part (30) is connected to the lower surface of the first speed bump (10a), and the other end is connected to the lower floor surface of the second installation space (3b), so that the first speed bump (10a) can be pressed upward and pushed up.

[0122] Here, the damper part (30) may include a damping member (31) and an elastic member (33).

[0123] The damping member (31) is formed in the shape of a shock absorber, with one end connected to the lower surface of the first speed bump (10a) and the other end connected to the lower floor surface of the second installation space (3b) to press the first speed bump (10a).

[0124] The elastic member (33) is formed in a coil shape and is provided in a shape that surrounds the damping member (31) to press the first speed bump (10a). Accordingly, the damping member (31) can be placed inside the elastic member (33).

[0125] Here, the damping member (31) and the elastic member (33) are preferably provided at the same location on the lower surface of the first speed bump (10a) and the second installation space (3b), but are not limited thereto and can be modified in various other ways.

[0126] Accordingly, the damper part (30) can press the lower part of the speed bump (10) that has been lowered by the load of the vehicle to raise it at the same speed or for the same amount of time, thereby returning it to its initial position.

[0127] That is, when the vehicle load is removed from the first speed bump (10a), which is lowered toward the ground due to the vehicle load when the vehicle enters and passes through, the first speed bump (10a) can be pushed upward to return to its original position, and at the same time, the second speed bump (10b), which is connected to the first speed bump (10a) by a height adjustment part (13), can be pushed upward to return to its original position.

[0128] Additionally, the damper part (30) can support the speed bump (10) when a vehicle load is applied, so that the speed bump (10) descends at the same speed or for the same amount of time.

[0129] In one embodiment of the present invention, a damper part (30) is provided on the lower part of the first speed bump (10a) and on the second installation space (3b) to adjust the height of the speed bump (10) by pushing and pressing the first speed bump (10a) and the second speed bump (10b) connected to the first speed bump (10a) by a height adjustment part (13). However, it is also possible to provide a damper part (30) on the lower part of the second speed bump (10b) and on the second installation space (3b), and it is also possible to provide a damper part (30) on both the first speed bump (10a) and the second installation space (3b) and on the second speed bump (10b) and the second installation space (3b), but it is not limited thereto and various other modifications are possible.

[0130] The above-mentioned power generation device (50) is positioned on the lower surface of the first speed bump (10a) and on the installation space (3), and may be provided with at least one or more.

[0131] That is, the power generation device (50) connects the lower surface of the first speed bump (10a) and the second installation space (3b), and may be provided in multiple units spaced apart at regular intervals along the length direction of the first speed bump (10a).

[0132] Here, the power generation device (50) may include a rack gear (51) installed on the lower surface of the first speed bump (10a) and a pinion gear (53) that is placed in the installation space (3) and connected to the generator (70).

[0133] Specifically, the power generation device (50) may include a rack gear (51) that is connected to the lower part of the first speed bump (10a) and is vertically positioned toward the installation space (3), and a pinion gear (53) that is rotatably engaged with the rack gear (51) and connected to the end of the generator (70).

[0134] Accordingly, the rack gear (51) connected to the speed bump (10) moves vertically downward toward the interior of the installation space (3) due to the load of the vehicle, and the pinion gear (53) engaged with the rack gear (51) can rotate according to the vertical movement of the rack gear (51).

[0135] Additionally, when the vehicle load is removed and the speed bump (10) returns to its initial position due to the elasticity of the damper part (30), the rack gear (51) connected to the first speed bump (10a) moves vertically upward toward the outside of the installation space (3), and the pinion gear (53) engaged with the rack gear (51) can rotate according to the vertical movement of the rack gear (51).

[0136] In this way, the rack gear (51) and the pinion gear (53) are meshed with each other so that when the speed bump (10) is lowered by the load of the vehicle, the pinion gear (53) meshed with the rack gear (51) rotates to produce power from the generator (70), and when the load of the vehicle is removed and the speed bump (10) rises, the pinion gear (53) meshed with the rack gear (51) rotates to produce power from the generator (70).

[0137] Here, a gear receiving groove (3c) having a predetermined depth may be formed on the inner bottom surface of the second installation space (3b) to accommodate a portion of the rack gear (51) that moves downward toward the interior of the installation space (3) when the speed bump (10) is lowered due to the load and impact of the vehicle.

[0138] The above gear receiving groove (3c) is preferably formed to a depth such that a part of the rack gear (51) can be received when the speed bump (10) is adjusted to a height that is flat to the same level as the ground due to the load of the vehicle, but is not limited thereto.

[0139] Here, the damper unit (30) and the power generation device (50) may be provided at the same location with respect to the width direction of the lower surface of the first speed bump (10a). That is, they may be at the same location with respect to the width direction of the first speed bump, but close together or spaced apart at a certain distance with respect to the length direction.

[0140] The generator (70) may be an energy harvesting device that is installed on an installation space (3) formed on the road surface and can convert the vertical load caused by vehicle traffic into energy to produce electricity.

[0141] To this end, the generator (70) is connected to the power generation device (50) and generates power by the load of the speed bump (10), and may be provided with at least one or more.

[0142] That is, the generator (70) is installed on the second installation space (3b), and its end is connected to the pinion gear (53) of the power generation device (50), and power generation can be performed by the rotation of the pinion gear (53), and can be provided in multiple units spaced apart at regular intervals along the length of the second installation space (3b).

[0143] Here, it is preferable that the generator (70) be provided in a number corresponding to the number of power generation devices (50), and it is also preferable that the damper part (30) be provided in a number corresponding to the number of power generation devices (50), but is not limited thereto.

[0144] Accordingly, the generator (70) has a central axis connected to a rack gear (51) that moves up and down in a straight line and a pinion gear (53) that meshes with the rack gear (51) and converts the straight line motion into rotational motion, and can generate power by rotating the central axis.

[0145] Here, the configuration of the generator (70) that produces power by rotational motion is a general configuration, so a detailed description below will be omitted.

[0147] Hereinafter, the operation process of a height-adjustable speed bump system according to the first embodiment of the present invention will be explained with reference to FIGS. 3 to 6.

[0148] First, the process of varying the height of the speed bump (10) for a vehicle (5) entering the speed bump system (1a) according to the first embodiment of the present invention at a regulated speed is explained with reference to FIGS. 3 and 4.

[0149] When a vehicle (5) entering the speed bump system (1a) enters while complying with a speed limit of 30 km / h or less, the first speed bump (10a) or the second speed bump (10b) of the speed bump (10) comes into contact with the front wheel (5a) of the vehicle (5) and applies a load, and from that point on, the first speed bump (10a) or the second speed bump (10b) descends at a constant speed or for a predetermined time.

[0150] That is, a vehicle (5) entering at the regulated speed enters the first speed bump (10a) or the second speed bump (10b) through an end rotatably connected by a rotational joint (15) in the installation space (3) formed on the road surface, and from the moment the front wheel (5a) of the vehicle (5) comes into contact with the end connected by the rotational joint (15) and applies a load, the first speed bump (10a) or the second speed bump (10b) begins to descend due to the load of the vehicle (5).

[0151] Here, the speed bump system (1a) is configured to descend at a constant speed or time regardless of the entry speed or passing speed of the vehicle (5). That is, the speed bump (10) descends slowly in accordance with the passing time corresponding to the passing speed of the vehicle (5).

[0152] Accordingly, the first speed bump (10a) or the second speed bump (10b) is continuously lowered by the load of the vehicle (5) entering and passing through, and when the first speed bump (10a) and the second speed bump (10b) are lowered until the front wheel (5a) of the vehicle (5) reaches the height adjustment part (13) provided at the part where the first speed bump (10a) and the second speed bump (10b) face each other, they spread out in a flat shape on the ground.

[0153] In this way, for a vehicle (5) entering and passing at the regulated speed, the first speed bump (10a) and the second speed bump (10b) are lowered, and when the front wheel (5a) of the vehicle (5) reaches the height adjustment part (13), it spreads out flat against the ground, making it identical to the situation of driving on the road surface, thereby minimizing the impact applied to the vehicle (5) by the speed bump (10).

[0155] Meanwhile, the process of varying the height of the speed bump for vehicles entering at a speed exceeding the regulated speed is explained with reference to FIGS. 5 and 6.

[0156] When a vehicle (5) entering the speed bump system (1a) enters at a speed exceeding 30 km / h, the first speed bump (10a) or the second speed bump (10b) descends from the moment the front wheel (5a) of the vehicle (5) comes into contact with the first speed bump (10a) or the second speed bump (10b) of the speed bump (10) and applies a load.

[0157] At this time, the speed bump (10) descends at a constant speed or for a predetermined time, but in the case of a vehicle (5) exceeding the regulated speed, the vehicle (5) entering the speed bump (10) passes through the speed bump (10) before it is spread parallel or flat with respect to the road surface because the vehicle's entry speed is faster than the pre-set descending speed or descending time of the speed bump (10).

[0158] Accordingly, the vehicle (5) passes over the speed bump (10) in a state where the speed bump (10) is formed in a triangular shape that is slightly lower in height than the initial shape, before it is spread out parallel or flat to the ground.

[0159] That is, since the front wheel (5a) of the vehicle (5) passes through the speed bump (10) at a point before it is flat against the ground when it reaches the height adjustment part (13), it passes through the speed bump (10) which is protruding from the ground.

[0160] Accordingly, in the case of a vehicle (5) exceeding the speed limit, the vehicle (5) may be struck when passing over the speed bump (10).

[0161] In this way, when a vehicle (5) passes over a speed bump (10) at a speed below the regulated speed, the impact applied to the vehicle (5) can be minimized, but when the vehicle (5) is driven at a speed exceeding the regulated speed, a penalty can be applied to the vehicle (5) to cause an impact.

[0163] Meanwhile, power can be produced from a generator (70) by a power generation device (50) installed at the bottom of a speed bump (10) that descends when a vehicle (5) enters and passes through.

[0164] That is, a rack gear (51) connected to the lower part of the speed bump (10) that descends due to the load of the vehicle (5) descends into the installation space (3), and a pinion gear (53) connected to the generator (70) rotates while engaging with the rack gear (51), thereby producing power from the generator (70).

[0165] In addition, power can be produced from a generator (70) by a power generation device (50) installed at the bottom of a speed bump (10) that rises to its initial position by a damper part (30) after a vehicle (5) enters and passes through.

[0166] That is, after the load of the vehicle (5) is removed, the rack gear (51) connected to the lower part of the speed bump (10) is pushed upward by the pressure of the damper part (30) rises outside the installation space (3), and the pinion gear (53) connected to the generator (70) is engaged with the rack gear (51) and rotates to produce power from the generator (70).

[0167] Accordingly, the speed bump system (1a) according to the present invention is adjusted so that its height gradually decreases over a predetermined speed or time regardless of the entry speed of the vehicle (5), thereby minimizing the impact applied to the vehicle (5) when the vehicle (5) enters and passes within the regulated speed range, and can impose a penalty by causing an impact on the vehicle (5) when the vehicle (5) enters and passes beyond the regulated speed range.

[0169] Hereinafter, a structural design method for a height-adjustable speed bump system according to the first embodiment of the present invention will be described.

[0170] Prior to this, the power produced by the generator (70) is greatly affected by the shape of the speed bump that receives the load of the vehicle.

[0171] Accordingly, the speed bump system (1a) according to the present invention is configured such that the first speed bump (10a) and the second speed bump (10b) are formed as straight plates so that the torque due to the vehicle load increases in a constant manner, thereby producing constant power through the operation of the power generation device (50) according to the vehicle load, and parameters regarding the lowering time and speed of the speed bump (10) due to the vehicle load, and the time and speed of returning to the initial position after being released from the vehicle load, etc. must be determined.

[0172] Specifically, as illustrated in FIG. 7, with respect to the first speed bump (10a), the length of the first speed bump (10a) is l, the initial height of the first speed bump (10a) is d, and the initial angle between the ground and the first speed bump (10a) is If the first speed bump (10a) is structured to rotate around the origin (O), the equation of motion can be expressed as follows.

[0174] Formula (1)

[0176] Here, J is the rotational inertia moment of the first speed bump, and

[0177] b and k are the damping value and stiffness value of the damper part (30), and

[0178] m is 1 / 2 (Half-Car) of the mass of the vehicle passing over the speed bump, and

[0179] g is the acceleration due to gravity, and

[0180] l c is the distance traveled by the vehicle, and is the rotation angle of the speed bump, and is the rotational speed (angular velocity) when turning the speed bump, and is the change in rotational speed (angular acceleration) when turning over a speed bump, and cos is the initial angle between the ground and the second speed bump.

[0181] Here, m may be half (Half-Car mass) of the mass of the vehicle (5) passing over the speed bump (10), rather than the total mass of the vehicle (5) applied to the speed bump (10), and may also be the mass of the front wheel (5a) of the vehicle (5) in contact with the speed bump (10), but is not limited thereto. c cos is the rotational torque of the speed bump (10) according to the mass of half (Half-Car mass) of the vehicle (5), where the potential energy is m (mass) · g (gravitational acceleration) · h (height), but in order to calculate the rotational torque of the speed bump (10) by arranging the speed bump (10) at an angle, the half load (m·g) of the vehicle (5) and the length (l) of the speed bump (10) c Instead of the height (h) of the speed bump (10) in ), the angle of inclination (cos) between the ground and the speed bump (10) The rotational torque of the speed bump (10) according to half the mass of the vehicle (5) can be obtained through the rotational motion equation using ).

[0182] Meanwhile, the damping value of the speed bump (10) is the sum of the mechanical damping value through the damping part (30) and the electrical damping value through the power generation device (50).

[0183] Accordingly, the damping member (31) and the elastic member (33) of the damper part (30) are installed at the same point below the first speed bump (10a).

[0185] Here, if moving at a constant velocity v for time t, l c =vt.

[0186] F b is the weight of the second speed bump (10b) coupled to the first speed bump (10a).

[0188] Here, Assuming that is small, is,

[0189] F b Since the size of is very small compared to the vehicle's load, if we ignore it,

[0190] Formula (1) can be simply expressed as follows.

[0192] Formula (2)

[0194] mgvt can be expressed as T(t), and

[0195] When the first speed bump (10a) receives the moving load of a vehicle traveling at a speed of v,

[0196] The magnitude of the input torque also increases in proportion to this.

[0198] Here, In this case, the Laplace transform of formula (2) can be expressed as follows.

[0200] Formula (3)

[0202] At this time, since the first speed bump (10a) is made of a thin, long plate, the rotational inertia moment value J is , It is very small compared to the value.

[0203] If we ignore J and calculate the time response of formula (3), we can obtain the following formula (4).

[0205] Formula (4)

[0207] Here, is the length of the arc drawn by the height adjustment part (13) of the first speed bump (10a) at time t.

[0208] Therefore, if the first speed bump (10a) is set to complete its descent after the vehicle has fully entered the first speed bump (10a), the time required for the vehicle's front wheels to fully pass the first speed bump (10a) is as follows.

[0210] Formula (5)

[0212] At this time, the first speed bump (10a) is fully extended, so the arc length of formula (4) satisfies the following relationship.

[0214] Formula (6)

[0216] Therefore, after substituting formula (5) into formula (4), By applying Taylor's theorem up to the cube of x, a quadratic expression in b can be obtained as follows.

[0218] Formula (7)

[0220] In formula (7), the stiffness value k is a stiffness value that allows the first speed bump (10a) to return to its initial position, and if it is too large or too small, normal operation does not occur.

[0222] Therefore, the stiffness value k can be obtained using the following equation by utilizing the static condition that causes the speed bump to be parallel to the ground when the vehicle load is applied at the end of the first speed bump.

[0224] Formula (8)

[0226] And,

[0228] By substituting formula (8) and simplifying, formula (7) can be simplified as follows by eliminating l.

[0230] Formula (9)

[0232] Therefore, the attenuation value of the first speed bump (10a) through formula (9) is calculated as follows.

[0234] Here,

[0236] Formula (10)

[0238] Meanwhile, in the structural design method of a height-adjustable speed bump system according to the first embodiment of the present invention described above, the installation position of the damper part (30) is described as being connected at one end to the end of the first speed bump (10a), that is, the end of the first speed bump (10a) that is close to the second speed bump (10b), but the installation position of the damper part (30) installed at the bottom of the first speed bump (10a) can be changed.

[0239] Accordingly, as shown in FIG. 8, when changing the installation position of the damper part (30), the stiffness value (k) according to the installation position of the damper part (30) installed at the bottom of the first speed bump (10a) is as follows using the following formula.

[0241] At T = klθ = k'l'θ,

[0243]

[0245] In this way, a stiffness value (k) can be calculated and applied according to the installation position of the damper part (30) on the speed bump (10).

[0247] (Second embodiment)

[0248] FIG. 9 is a side cross-sectional view schematically illustrating a height-adjustable speed bump system according to a second embodiment of the present invention.

[0249] The height-adjustable speed bump system according to the second embodiment of the present invention has the same structure as the height-adjustable speed bump system according to the first embodiment described above, except for the structure of the speed bump; therefore, a redundant description of the same structure will be omitted.

[0250] The height adjustment piece (13a) of the speed bump according to the first embodiment of the present invention is formed linearly with respect to the longitudinal direction of the first speed bump (10a), so that when a vehicle enters at a speed below the regulated speed, the speed bump (10) is formed in a flat state identical to the ground after it has completely descended toward the ground, so that the height adjustment piece (13a) does not interfere with the vehicle when passing through any part of the speed bump (10).

[0251] However, if the vehicle enters at a speed exceeding the vehicle's speed limit, the vehicle enters before the speed bump (10) is completely lowered toward the ground, so the height adjustment piece (13a) may protrude toward the front wheel of the entering vehicle.

[0252] Accordingly, as illustrated in FIG. 9, the height-adjustable speed bump system (1b) according to the second embodiment of the present invention may have a height adjustment piece (13'a) formed by protruding from the end of the first speed bump (10a) facing the second speed bump (10b) and formed by bending it at a predetermined angle.

[0253] Specifically, the height adjustment piece (13'a) according to the present embodiment may be formed in an approximate "L" shape, protruding a certain portion toward the second speed bump (10b) on each side of the end of the first speed bump (10a) and then bent downward toward the installation space (3).

[0254] Accordingly, the moving hole (13'b) formed in the height adjustment piece (13'a) can also be bent to correspond to the shape of the height adjustment piece (13'a) and formed through in an approximate "L" shape.

[0255] In this way, the height adjustment piece (13'a) formed on the first speed bump (10a) is bent so that interference between the height adjustment piece (13'a) and the front and rear wheels of the vehicle can be minimized even when the vehicle enters the speed bump (10) and passes over it after exceeding the regulated speed.

[0257] Although the present invention is illustrated and described above in relation to specific embodiments, it will be readily apparent to those skilled in the art that various modifications and changes are possible without departing from the spirit and scope of the invention as set forth in the appended claims. Explanation of the symbols

[0259] 1a, 1b: Speed ​​bump system 3 : Installation space 3a : First installation space 3b : Second installation space 3c: Gear receiving groove 5 : Vehicle 5a : Front wheel 10: Speed ​​bumps 10a : 1st speed bump 10b: Second speed bump 13: Height adjustment part 13a : Height adjustment piece 13b : Moving hole 13c : Moving projection 15: Rotating joint 30: Damper section 31: Damping member 33 : Elastic member 50 : Power generator 51 : Rack Gear 53: Pinion gear 70 : Generator

Claims

Claim 1 An installation space formed on the road surface; a speed bump comprising a first speed bump installed at an angle on one side in the width direction of the installation space to forcibly reduce the driving speed of a vehicle, and a second speed bump installed at an angle on the other side in the width direction of the installation space; at least one damper part disposed below the speed bump and on the installation space; and at least one power generation device disposed below the speed bump and on the installation space. and at least one generator connected to the power generation device and performing power generation by the load of the speed bump; wherein the speed bump descends at a constant speed or time from the point when a load is applied as the front wheels of a vehicle come into contact with the speed bump, and when a vehicle entering the speed bump complies with the prescribed speed, the speed bump unfolds flat against the ground at the point when the front wheels of the vehicle reach the point where the first speed bump and the second speed bump meet, allowing the vehicle to pass through, thereby making the situation identical to driving on the road surface, and minimizing the impact applied to the vehicle by the speed bump, and when a vehicle entering the speed bump enters at excessive speed exceeding the prescribed speed, since the point when the front wheels of the vehicle reach the point where the first speed bump and the second speed bump meet is faster than the descending speed or descending time of the speed bump, the vehicle passes through before the speed bump unfolds flat against the ground, A height-adjustable speed bump system characterized by imposing a penalty that causes impact to the vehicle due to the speed bump, making it identical to the situation of passing over a speed bump protruding from the road surface. Claim 2 delete Claim 3 A height-adjustable speed bump system according to claim 1, characterized in that the first speed bump and the second speed bump are formed as straight plates. Claim 4 A height-adjustable speed bump system according to claim 1, wherein each mutually facing end of the first speed bump and the second speed bump is provided with a height adjustment part for adjusting the height of the first speed bump and the second speed bump, and each other end of the first speed bump and the second speed bump is rotatably connected to the floor surface of the installation space by a rotary joint. Claim 5 A height-adjustable speed bump system according to claim 4, wherein the height adjustment member comprises a height adjustment piece protruding toward a second speed bump on each side of the end of the first speed bump, a movable hole formed longitudinally through the side of each height adjustment piece, and a movable projection slidably coupled to the movable hole and protruding from both sides of the end of the second speed bump, wherein the length of the movable hole is formed such that the first speed bump and the second speed bump can descend to a flat state identical to the road surface, and the movable projection coupled to the movable hole moves forward and backward in the longitudinal direction of the movable hole, thereby raising or lowering the height of the first speed bump and the second speed bump relative to the ground. Claim 6 A height-adjustable speed bump system according to claim 1, wherein the damper portion is provided in plurality at regular intervals along the longitudinal direction of the first speed bump, and includes a damping member for pressing upward the lower portion of the first speed bump lowered by the load of a vehicle to return it to its initial position, and an elastic member to which the damping member is coupled, wherein the damper portion raises the speed bump lowered by the load of a vehicle at the same speed and time, and lowers the speed bump lowered by the load of a vehicle at the same speed and time. Claim 7 A height-adjustable speed bump system according to claim 1, wherein the power generation device comprises a rack gear connected to the lower part of the speed bump and configured vertically toward the installation space, and a pinion gear connected to the end of the generator and configured to mesh with the rack gear and rotate, and wherein power is produced through the generator by the rotation of the pinion gear meshed with the rack gear, which lowers the speed bump due to the load of a vehicle and raises the speed bump after the vehicle passes. Claim 8 A method for designing the structure of a height-adjustable speed bump system according to any one of claims 1, 3 to 7, comprising: a step of setting the equation of motion of the speed bump; a step of calculating the load torque generated on the speed bump according to the entry of a vehicle; a step of calculating the rotation angle of the speed bump; a step of calculating the height of the speed bump descending according to the entry time of a vehicle entering the speed bump; and a step of calculating a damping value for the speed bump to descend completely relative to the ground; and characterized by setting the equation of motion using the following formula. Formula (1) J : Moment of rotational inertia b, k : Damping and stiffness values ​​of the damper m : Half-Car mass of the vehicle passing over the speed bump g : Gravitational acceleration l c : Vehicle's travel distance F b : The weight of the second speed bump : Turning angle of the speed bump : Rotational speed (angular velocity) when turning a speed bump : Change in rotational speed (angular acceleration) when turning a speed bump cos : Initial angle between the ground and the second speed bump Claim 9 delete Claim 10 A structural design method for a height-adjustable speed bump system according to claim 8, characterized by calculating the load torque by the following formula. Formula (2) mgvt : T (vehicle load torque) Claim 11 A structural design method for a height-adjustable speed bump system according to claim 10, characterized by calculating the rotation angle of the speed bump by the following formula. Formula (3) Claim 12 A structural design method for a height-adjustable speed bump system according to claim 11, characterized by calculating the height of the speed bump that descends according to the vehicle entry time using the following formula. Formula (4) : The arc length drawn by the height adjustment part of the first speed bump with respect to time. At this time, the time required for the vehicle's front wheels to pass the first speed bump (t f )Is, Formula (5), and since the first speed bump is fully extended, Formula (4) must satisfy the relationship of Formula (6) below, and Formula (6) Therefore, after substituting Formula (5) into Formula (4) Applying Taylor's theorem up to the cube of x, we obtain a quadratic expression in b as follows, and Formula (7) In the above formula (7), the stiffness value (k) is derived from the static displacement relationship with respect to the load of the vehicle, Formula (8) is defined, and when formula (8) is substituted into formula (7) and simplified, l in formula (7) is eliminated and simplified as follows. Formula (9) Claim 13 A structural design method for a height-adjustable speed bump system according to claim 12, characterized by calculating a damping value for the speed bump to descend completely relative to the ground using the following formula. In the above formula (9), And, Formula (10)

Images