CN107254859B - Rotatable energy consumption unit and have this rail guard that can rotate energy consumption unit - Google Patents
Rotatable energy consumption unit and have this rail guard that can rotate energy consumption unit Download PDFInfo
- Publication number
- CN107254859B CN107254859B CN201710652239.0A CN201710652239A CN107254859B CN 107254859 B CN107254859 B CN 107254859B CN 201710652239 A CN201710652239 A CN 201710652239A CN 107254859 B CN107254859 B CN 107254859B
- Authority
- CN
- China
- Prior art keywords
- magnetic
- plate
- rotatable energy
- rotatable
- magnetorheological elastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention provides a rotatable energy consumption unit and a protective guard with the same, wherein the rotatable energy consumption unit comprises: a stem; the magnetorheological elastic laminated structural component comprises magnetic-conductive rigid structural components and magnetorheological elastic structural components which are alternately arranged around the core column, and the adjacent magnetic-conductive rigid structural components can move relatively through the magnetorheological elastic structural components. The rotatable energy consumption unit can have stronger energy dissipation capability, and can prevent vehicles from rushing out of the guardrail. The guard rail has similar advantages.
Description
Technical Field
The invention relates to the technical field of protection engineering, in particular to a rotatable energy consumption unit and a protective guard with the same.
Background
The current garbage incineration technology needs a large stockpiling area, a material picking opening in the stockpiling area has a certain height, a garbage transfer vehicle needs to climb to a specific height through a ramp to unload garbage, the garbage transfer vehicle is limited by land resources, and a climbing ramp of the garbage transfer vehicle is often a curved ramp with a small occupied area. In order to ensure the safe running of the garbage transfer vehicle, the ramps or the bent ramps are provided with guardrails which are generally reinforced concrete guardrails or steel structure guardrails, the guardrails are heavy and high in rigidity, the absorbed energy is limited when the vehicle collides, the direction of the out-of-control vehicle cannot be dredged and corrected, the safety of the running vehicle cannot be well ensured, the vehicle is easy to overturn, and the secondary pollution to the environment caused by the vehicle transfer objects is caused. On the basis, the anti-collision guardrail takes deformation or damage of the anti-collision guardrail or an auxiliary component as a main energy consumption mode, the energy consumption mode of the guardrail is passive energy consumption, the product performance of the anti-collision guardrail depends on the mechanical property of energy consumption materials or components to a great extent, and the energy consumption and the vehicle driving direction deviation rectifying performance of the anti-collision guardrail are limited for loads which change constantly in the impact process of heavy-load automobiles.
It is therefore desirable to provide a guard rail that at least partially solves the above problems.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to solve the existing problems, an aspect of the present invention provides a rotatable energy consuming unit, comprising:
a stem;
the magnetorheological elastic laminated structural component comprises magnetic-conductive rigid structural components and magnetorheological elastic structural components which are alternately arranged around the core column, and the adjacent magnetic-conductive rigid structural components can move relatively through the magnetorheological elastic structural components.
Optionally, the method further comprises:
the excitation coil is arranged in the coil accommodating cavity and is used for generating a magnetic field which acts on the magnetorheological elastic structural part to enable the magnetorheological elastic structural part to generate a magnetorheological effect;
the magnetic conduction sealing guard plate surrounds and covers the magnetorheological elastic laminated structural part and is used for conducting a magnetic field generated by the excitation coil;
and the magnetic conductive ring plate is fixed on the core column and positioned below the magnetorheological elastic laminated structural member, and the periphery of the magnetic conductive ring plate is connected with the magnetic conductive sealing guard plate and used as a descending section of the magnetic field.
Optionally, the method further comprises:
the inner support plate is arranged around the core column, is positioned below the magnetorheological elastic laminated structural component and above the magnetic conductive ring plate and is used for supporting the magnetorheological elastic laminated structural component;
the inner supporting plate, the magnetic conductive ring plate and the magnetic conductive sealing protective plate enclose the coil accommodating cavity.
Optionally, a magnetic isolation ring plate and an annular magnetic isolation gap located below the magnetic isolation ring plate are further arranged between the inner support plate and the magnetic conductive sealing guard plate.
Optionally, the method further comprises:
and the end supporting plate is arranged on the core column at a position corresponding to the magnetic conduction sealing guard plate and is used for supporting and fixing the magnetic conduction sealing guard plate.
Optionally, the magnetically conductive sealing guard plate includes a main body portion parallel to the core column and an inward extending portion extending from the main body portion to the core column, and the inward extending portion is connected and fixed to the end support plate to seal the magnetorheological elastic laminated structural member together with the end support plate.
Optionally, the inner extension portion of the magnetic conductive sealing guard plate and the core column are spaced, and the outer periphery of the end support plate and the main body portion of the magnetic conductive sealing guard plate are spaced, so that the magnetic conductive sealing guard plate can be compressed inward when being subjected to an external force.
Optionally, the method further comprises:
a sealing plate disposed outside the end support plate and between the inner extension and the stem.
Optionally, a shock absorbing layer is disposed above the magnetically conductive sealing guard plate.
Optionally, a light reflecting layer is arranged on the surface of the shock absorption layer.
Optionally, the method further comprises:
the pressure sensor is used for detecting the impact force borne by the rotatable energy consumption unit;
and the control circuit controls the on-off and the magnitude of the working current of the excitation coil based on the detection result of the pressure sensor.
According to the rotatable energy consumption unit, after a vehicle such as a heavy-duty transport vehicle collides and contacts with the rotatable energy consumption unit, firstly, a part of impact energy is dissipated through extrusion deformation of the shock absorption layer on the outer layer of the rotatable energy consumption unit, then, through relative radial sliding and/or relative annular rotation between the magnetic conduction rigid structural members, and the magnetorheological elastic structural member generates recoverable shearing deformation and/or extrusion deformation to further dissipate a part of impact energy when no working current exists, and after the working current is introduced, the magnetorheological elastic structural member generates a magnetorheological effect, and the magnetic shearing deformation and the magnetic extrusion deformation of the magnetorheological elastic structural member also dissipate a part of impact energy; and finally, the magnetorheological elastic laminated structural member generates unrecoverable plastic deformation to further dissipate a part of impact energy through uneven collision contact of the vehicle on the rotatable energy consumption unit, the vehicle speed can be reduced until the vehicle stops in the whole dissipation process, the energy dissipation capacity is greatly improved because the whole energy dissipation process comprises four energy dissipation processes, and the magnetorheological elastic laminated structural member has stronger deformation capacity and recovery capacity and is not easy to damage.
Another aspect of the present invention provides a guard rail, including: the stand, the stand interval sets up above the ground, be provided with above the stand rotatable power consumption unit.
Optionally, the core column of the rotatable energy consuming unit is detachably sleeved on the upright column.
Optionally, the core column and the upright column are fixedly connected together by a pin key or an interference connection manner.
Optionally, a cross beam is disposed on the column at a position corresponding to the upper and lower surfaces of the rotatable energy consuming unit, and a gasket is disposed between the cross beam and the rotatable energy consuming unit.
Optionally, an X-shaped support beam is disposed between adjacent columns.
Optionally, the rotatable energy units are arranged at intervals along the axial direction of the upright post.
Optionally, the number of rotatable energy units above each of the pillars is greater than or equal to 2.
According to the protective guard provided by the invention, through the quadruple energy dissipation process of the rotatable energy consumption unit, the energy of a vehicle impacting the protective guard can be greatly consumed, and the impact damage of the impact on the upright post of the protective guard is reduced, so that the vehicle is prevented from falling, and the driving direction of the vehicle can be corrected to a certain extent through the relative rotation of the elastic plastic structural member and the rigid structural member of the rotatable energy consumption unit.
In addition, because the rotatable energy consumption unit is detachably connected with the upright post, the rotatable energy consumption unit can be simply and conveniently replaced after being damaged, and the maintenance surface is very small.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
In the drawings:
fig. 1 shows a schematic structural view of a rotatable energy consuming unit according to an embodiment of the present invention, wherein (a) is a top view and a peripheral illustration, and (b) is a cross-sectional view;
FIG. 2 illustrates a magnetic circuit schematic of the rotatable energy consuming unit shown in FIG. 1;
fig. 3 is a schematic view illustrating the construction of a guard rail according to an embodiment of the present invention;
fig. 4 shows a schematic view of a connection between a rotatable energy-consuming unit and a column, wherein (a) is a pin-key connection and (b) and (c) are interference connections, according to an embodiment of the invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity to indicate like elements throughout.
It will be understood that when an element or layer is referred to as being "on" …, "adjacent to …," "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to the other elements or layers or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on …," "directly adjacent to …," "directly connected to" or "directly coupled to" other elements or layers, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.
Spatial relationship terms such as "under …", "under …", "below", "under …", "above …", "above", and the like, may be used herein for ease of description to describe the relationship of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, then elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "below …" and "below …" can encompass both an orientation of up and down. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial descriptors used herein interpreted accordingly.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
In the following description, for purposes of explanation, specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
Example one
A rotatable energy consuming unit according to an embodiment of the present invention will be described in detail with reference to fig. 1.
As shown in fig. 1, the present embodiment provides a rotatable energy consuming unit 100 applied to a guard rail, which includes a core column 1, and a magnetorheological elastic laminated structure and an inner support plate 4 disposed around the core column 1.
Exemplarily, in the present embodiment, the stem 1 is a cylindrical structure and is internally provided with an axial through hole, which may be made of a rigid material. Preferably, the stem 1 is made of magnetically conductive material.
The magneto-rheological elastic laminated structural part comprises a magnetic-conductive rigid structural part 2 and a magneto-rheological elastic structural part 3 which are alternately arranged around a core column 1. The magnetic-conductive rigid structural member 2 and the magnetorheological elastic structural member 3 are exemplarily in a hollow cylindrical structure or a cylindrical structure, so as to be conveniently sleeved on the core column 1 alternately. Exemplarily, in the present embodiment, the magnetic conductive rigid structural member 2 is firstly disposed on the core column 1, then the magnetorheological elastic structural member 3 and the magnetic conductive rigid structural member 2 are sequentially and alternately disposed, and the outermost layer is the magnetorheological elastic structural member 3. The number of the magnetic rigid structural members 2 and the number of the magnetorheological elastic structural members 3 are determined according to the required deformation amount and energy dissipation capacity, and are not particularly limited herein.
The magnetically conductive rigid structural member 2 is illustratively a magnetically conductive steel cylinder. The magnetorheological elastic structure member 3 is made of a magnetorheological elastomer material, is a rheological intelligent composite material, and is a viscoelastic intelligent material formed by uniformly dispersing micron-sized soft magnetic particles in a high molecular polymer matrix in a viscoplastic state and placing the matrix in a magnetic field with certain strength for curing. The macroscopic force-magnetic characteristic of the magnetorheological elastomer is represented by isotropic visco-elastic response along the arrangement direction of ferromagnetic particles, the rheological property and the mechanical property of the magnetorheological elastomer can be changed rapidly and stably under the action of an external variable magnetic field, the apparent viscosity of the magnetorheological elastomer can be changed by several orders of magnitude within millisecond-level time, and the instantaneous controllability of the performance of the magnetorheological elastomer can be realized by placing the magnetorheological elastomer in a proper mechanism.
In this embodiment, the magnetic conductive rigid structural member 2 and the core column 1 may be fixed by a bearing, an adhesive, or the like, the magnetic conductive rigid structural member 2 and the magnetorheological elastic structural member 3 may be fixed by a vulcanization bonding method, and the vulcanization bonding may be specifically realized by a common vulcanization bonding method such as an adhesive method, a direct bonding method, and a hard adhesive method. When the rotatable energy consumption unit 100 is acted by external force, the adjacent magnetic conduction rigid structural members 2 can perform relative motion, such as radial sliding and/or annular rotation, through the magnetorheological elastic structural member 3, so as to dissipate energy.
The inner support plate 4 is arranged around the core column 1, is positioned below the magnetorheological elastic laminated structural member and is used for supporting the magnetorheological elastic laminated structural member. Namely, the inner support plate 4 is a circular plate or an annular plate and is fixed on the core column 1 for bearing the weight of the magnetorheological elastic laminated structural member. The inner support plate 4 may be made of a rigid material, such as a metal material, which may be fixed onto the stem 1 by welding or the like.
In order to utilize the magneto rheological property and the mechanical property of the magneto rheological elastic structural member 3, as shown in fig. 1, in this embodiment, the rotatable energy consuming unit 100 is further provided with an excitation coil 5, a magnetic conductive ring plate 6, a magnetic conductive sealing guard plate 7 and an end support plate 8, wherein the magnetic conductive ring plate 6 is located below the inner support plate and encloses a coil accommodating cavity with the magnetic conductive sealing guard plate 7 and the inner support plate 4, the excitation coil 5 is arranged in the coil accommodating cavity, and the volume size and the cross-sectional length and width of the excitation coil 5 are determined by the design deformation of the compression, shear and torsion resistant energy consuming rotary unit module. When the excitation coil 5 is energized with an operating current, a magnetic field acting on the magnetorheological elastic structure to harden the magnetorheological elastic structure can be generated, and a magnetic circuit of the magnetic field is shown by a broken line in fig. 2.
A magnetic conductive ring plate 6 is disposed below the exciting coil 5 and serves as a down-going section of the magnetic field loop. The magnetic conductive ring plate 6 can be made of soft magnetic composite materials and is a circular plate and an annular plate, the inner periphery of the magnetic conductive ring plate is fixed on the core column 1, and the outer periphery of the magnetic conductive ring plate is connected and fixed with the magnetic conductive sealing guard plate 7. Illustratively, the magnetic conductive ring plate 6 is seamlessly connected with the core column 1 and the magnetic conductive sealing guard plate 7, for example, the seamless connection is realized by grinding and tightening.
The magnetic conduction sealing guard plate 7 surrounds and covers the magnetorheological elastic laminated structural component and is used for upwards conducting a magnetic field generated by the excitation coil 5, protecting the magnetorheological elastic laminated structural component and reducing magnetic leakage. Specifically, the magnetic conduction sealing protection plate 7 comprises a main body part parallel to the core column 1 and an inward extending part extending from the main body part to the core column 1, namely, the magnetic conduction sealing protection plate 7 is of a U-shaped structure, and the magnetic conduction sealing protection plate 7 is supported and fixed through an end supporting plate 8. Specifically, the end support plates 8 are disposed at two ends of the magnetorheological elastic laminated structural member 1 on the core column, that is, at positions corresponding to the core column 1 and the magnetic conductive sealing guard plate, and the inner extension portion of the magnetic conductive sealing guard plate 7 is fixedly connected with the end support plates 8, so that the magnetic conductive sealing guard plate 7 and the end support plates 8 jointly seal the magnetorheological elastic laminated structural member. The magnetic conductive sealing guard plate 7 can be made of various magnetic conductive rigid materials, for example, a magnetic conductive steel plate.
The end support plates 8 are made of a rigid material, and have a circular or annular shape, and the end support plates 8 may be fixed to the stem 1 by a coupling means such as a bearing 9. In this embodiment, the radial dimension of the end support plate 8 is smaller than the radial dimension of the magnetorheological elastic laminated structural member, so that a certain distance is provided between the outer periphery of the end support plate 8 and the magnetic conductive sealing guard plate 7, and correspondingly, the radial dimension of the inner extension portion of the magnetic conductive sealing guard plate 7 is also smaller than the radial dimension of the magnetorheological elastic laminated structural member, so that a certain distance is provided between the inner extension portion of the magnetic conductive sealing guard plate 7 and the core column 1, so that when an external force impact is received, the magnetic conductive sealing guard plate 7 can be compressed along with the radial deformation of the magnetorheological elastic laminated structural member, so that the magnetorheological elastic laminated structural member can dissipate energy through the radial deformation. In addition, a certain distance is reserved between the end support plate 8 and the upper surface of the magnetorheological elastic laminated structural member and the lower surface of the magnetic conductive ring plate 6, so that an L-shaped cavity is formed above the magnetorheological elastic laminated structural member and below the magnetic conductive ring plate 6 and is used as an operation space for the sensor and the installation of the sensor, and is used as an excitation coil capacity adjusting space according to different road condition requirements.
Referring to fig. 1 again, since the end support plate 8 and the inward extending portion of the magnetic conductive sealing protection plate 7 are stacked up and down, and the inward extending portion of the magnetic conductive sealing protection plate 7 is spaced apart from the core column 1, that is, a certain distance is formed between the inward extending portion of the magnetic conductive sealing protection plate 7 and the core column 1, an annular gap is formed by the three components, and in order to better seal the magnetorheological elastic laminated structural member, in this embodiment, a sealing plate 10 is further provided, which is located outside the end support plate 8, and is located between the inward extending portion of the magnetic conductive sealing protection plate 7 and the core column 1, that is, the sealing plate 10 fills the gap. It should be understood that the sealing plate 10 is provided one above and one below each other. The sealing plate 10 may be made of various suitable materials, and illustratively, the sealing plate 10 is a teflon plate having a thickness of not less than 3mm, that is, a thickness of 3mm or more. Furthermore, it should be understood that the annular gap is formed between the top and bottom of the stem 1 and the inward extending portion of the magnetically conductive sealing guard 7, and therefore in this embodiment, two sealing guards are provided, respectively at the top and bottom of the rotatable energy consuming unit 100.
Further, as shown in fig. 1, in the present embodiment, a certain distance is provided between the outer periphery of the inner support plate 4 and the magnetic conductive sealing guard plate 7, and a magnetic isolation ring plate 11 and an annular magnetic isolation gap 12 are provided between the inner support plate 4 and the magnetic conductive sealing guard plate 7, so as to ensure the magnetic flux of the effective magnetic path and reduce the magnetic flux leakage of the device. The magnetic isolating ring plate 11 is made of a magnetic resistant material such as copper.
In addition, in this embodiment, the surface of the magnetic conduction sealing guard plate 7 is provided with a shock absorption layer 13 and a reflective layer 14 located on the surface of the shock absorption layer, the shock absorption layer 13 can be made of an elastic shock absorption material, and partial energy dissipation can be realized through the deformation of the shock absorption layer 13. The reflecting layer 14 reflects the vehicle light, so that the driver can get clearer in the road trend, and the safety is improved.
Referring to fig. 1 again, in the present embodiment, in order to utilize the instantaneous controllability of the magnetorheological elastic structural member 3, the excitation coil 5 is connected to an external power source such as a solar battery through a lead wire passing through the lead wire hole 15, so as to provide a working current through the power source when a strong energy dissipation capability is required, so that the excitation coil generates a magnetic field, thereby improving the energy dissipation capability of the magnetorheological elastic structural member 3, and not introducing the working current when the strong energy dissipation capability is not required, thereby saving energy.
Further, a pressure sensor 16 is further disposed in the rotatable energy consuming unit 100, and exemplarily disposed on the end support plate 8, for detecting an external impact force applied to the rotatable energy consuming unit 100, so that when the external impact force is large, a control circuit connected to the excitation coil 5 controls an external power supply to provide a working current, for example, the control switch is closed, so that the excitation coil 5 is supplied with the working current, and the control circuit can calculate a stiffness required for resisting the impact force according to the pressure signal and a corresponding displacement (displacement after correction), and obtain a current intensity required by the excitation coil according to a relation curve between a magnetic modulus of the magnetorheological elastic structural member and an excitation magnetic field, so that the excitation coil 5 is supplied with the calculated adjustable working current. When the pressure sensor 16 detects that the external impact force is small or the external impact force does not affect the pressure sensor, the control circuit controls the external power supply not to provide working current for the excitation coil 5, so that the magnetorheological elastic structural member 3 can dissipate energy only by means of elastic deformation of the magnetorheological elastic structural member.
According to the rotatable energy consumption unit, after a vehicle such as a heavy-duty transport vehicle collides and contacts with the rotatable energy consumption unit, firstly, a part of impact energy is dissipated through extrusion deformation of the shock absorption layer on the outer layer of the rotatable energy consumption unit, then, through relative radial sliding and/or relative annular rotation between the magnetic conduction rigid structural members, and the magnetorheological elastic structural member generates recoverable shearing deformation and/or extrusion deformation to further dissipate a part of impact energy when no working current exists, and after the working current is introduced, the magnetorheological elastic structural member generates a magnetorheological effect, and the magnetic shearing deformation and the magnetic extrusion deformation of the magnetorheological elastic structural member also dissipate a part of impact energy; and finally, the magnetorheological elastic laminated structural member generates unrecoverable plastic deformation to further dissipate a part of impact energy through uneven collision contact of the vehicle on the rotatable energy consumption unit, the vehicle speed can be reduced until the vehicle stops in the whole dissipation process, the energy dissipation capacity is greatly improved because the whole energy dissipation process comprises four energy dissipation processes, and the magnetorheological elastic laminated structural member has stronger deformation capacity and recovery capacity and is not easy to damage.
Example two
A guard rail according to an embodiment of the present invention will be described in detail with reference to fig. 3 and 4.
As shown in fig. 3 and 4, the present embodiment provides a guard rail, which includes a vertical column 17 and a rotatable energy consumption unit 100 disposed on the vertical column 17.
In this embodiment, the columns 17 are spaced apart from each other on the ground, and may be of a concrete structure or a steel structure. As shown in fig. 3, the vertical columns 17 are arranged at a certain distance at two sides of the curved ramp, and the distance between adjacent vertical columns 17 is set according to requirements, mainly considering two factors: firstly, ensuring that an out-of-control vehicle is always positioned on a road in a safety guardrail in the whole collision deceleration process; second, allowing a partial failure of the safety bumper of an uncontrolled heavy haul vehicle.
The structure of the rotatable energy consuming unit 100 is as described in the first embodiment, and is not described herein. In the present embodiment, the rotatable energy consuming units 100 are arranged at intervals along the axial direction of the upright post 17, and the number of the rotatable energy consuming units 100 in each row is determined by the road design capacity and the power of the excitation coil 5. Exemplarily, in the present embodiment, two rotatable energy units 100 are provided above each upright 17. The height of the rotatable energy unit 100 from the ground (i.e., the distance between the lower surface of the rotatable energy unit and the ground) is designed in consideration of the height of the bumper of different vehicles from the ground, and the length of the rotatable energy unit 100 is determined according to the size of the magnetic circuit (also because the magnetic field of the rotatable energy unit 100 is not too large to make the rotatable energy unit 100 large, so the rotatable energy unit 100 needs to be arranged along the axial array of the upright posts 17.
In this embodiment, the upright post 17 and the rotatable energy consuming unit 100 are detachably connected, so that the rotatable energy consuming unit 100 can be replaced to be maintained after being damaged by impact, and the maintenance is simple and the maintenance surface is small. Specifically, in the present embodiment, the upright 17 and the rotatable energy unit 100 may be connected by a pin 18 or by an interference connection. As shown in fig. 4 (a), since the axial through hole is disposed inside the core column 1 of the rotatable energy consuming unit 100, when the core column 1 is sleeved on the upright column 17, the upright column 17 and the rotatable energy consuming unit 100 can be connected by the pin key 18 between the upright column 17 and the core column 1, the pin keys 18 are annularly arrayed at the interface between the core column 1 and the upright column 17, and the number of the pin keys is determined by the driving load. Alternatively, as shown in fig. 4 (b) and (c), the pillar 17 and the stem 1 are fixed by interference connection, which uses fit interference between the parts to realize connection. The connecting structure is simple, the centering precision is good, the connecting structure can bear torque, axial force or the combined load of the torque and the axial force, the bearing capacity is high, and the connecting structure can work reliably under the impact vibration load. Further, the cross section of the hollow portion of the stem 1 may be in various suitable shapes such as a circle, a square, or a polygon, which is determined by the shear strength, the torsional strength, and the like of the shear face of the stem 1.
Further, in the present embodiment, as shown in fig. 3, in order to increase the overall rigidity of the guard rail, a beam 19 is disposed above the column 17 at a position corresponding to the upper and lower surfaces of the rotatable energy consuming unit 100, and a gasket 20 is disposed between the beam 19 and the rotatable energy consuming unit 100, that is, the gasket 20 is disposed at the interface between the beam 19 and the rotatable energy consuming unit 100, and bridge silicone grease is applied. The thickness of the shim 20 is illustratively 20 mm. Further, an X-shaped support beam 21 is provided between the adjacent pillars 17 to further increase the rigidity of the cross member 19 in the road direction, thereby greatly reducing the peak load value of the individual pillars.
According to the guard rail of the embodiment, when a vehicle such as an uncontrolled heavy-duty transport vehicle hits a safety guard rail with a certain impact force F, the vehicle first contacts the outer shock-absorbing layer 13, the outer shock-absorbing layer 13 is elastically and plastically deformed, and the impact force of the uncontrolled vehicle is transmitted to the magnetically conductive seal guard plate 7, and the impact force is decomposed into component forces in the down-road direction: f1 ═ F cos (α) and the component force in the cross-track direction: f2 ═ F × sin (α), where α is the angle between the vehicle direction of travel and the road axial direction. Under the action of F1, the magnetic conduction sealing guard plate 7 drives the magnetic conduction rigid structural members 2 in the magnetorheological elastic laminated structural member to generate annular relative rotation, and the magnetorheological elastic structural member 3 generates shearing deformation; under the action of F2, the magnetic conduction sealing guard plate 7 drives the magnetic conduction rigid structural member 2 in the magnetorheological elastic laminated structural member to generate radial relative sliding, and the magnetorheological elastic structural member 3 generates extrusion deformation. When the vehicle is unloaded, the radial deformation of the magnetorheological elastic laminated structural part is small, the pressure sensor does not receive a pressure signal, the power switch is not triggered, the excitation coil 5 has no working current or has a small working current, the magnetorheological elastic structural part 3 mainly works by depending on the shear modulus and the elastic modulus of the magnetorheological elastic structural part under a zero field, under the working condition, the main energy consumption force output part in the magnetorheological elastic structural part 3 is a base body of the magnetorheological elastic structural part 3, and the energy consumption type of the magnetorheological elastic structural part 3 is elastic deformation capable of being recovered. When the vehicle is fully loaded or heavily loaded, the radial and circumferential deformations of the magnetorheological elastic laminated structural member are large, the pressure sensor receives a pressure signal, the power switch is triggered, the excitation coil 5 is energized with a working current, the control circuit calculates the rigidity required for resisting the impact force at the moment according to the pressure signal and the corresponding displacement (the displacement after correction), the current intensity required by the excitation coil can be obtained according to the relation curve of the magnetic modulus of the magnetorheological elastic structural member 3 and the excitation magnetic field, the excitation coil 5 is energized with the calculated adjustable working current, due to the instant controllability of the magnetorheological elastic structural member 3, the magnetorheological elastic structural member 3 can be instantly hardened under the action of the input working current, namely the magnetorheological effect, the excitation coil 5 generates a magnetic field with a certain field intensity, and the magnetorheological elastic structural member 3 shows a certain magnetic shear modulus and a magnetic, under the working condition, the main energy consumption force in the magnetorheological elastic laminated structural part is the elastoplasticity of the matrix of the magnetorheological elastic structural part 3 and the self hardening of the magnetorheological elastic structural part 3, and the type of the magnetorheological elastic structural part 3 is the recoverable elastic deformation of the matrix and the recoverable deformation energy for overcoming the magnetorheological effect. In the above process, the energy consumption of the rotatable energy consuming unit 100 is accompanied, specifically: when the vehicle is in contact with the rotatable energy consumption unit 100, the outer shock absorption layer 13 of the rotatable energy consumption unit 100 is extruded and deformed to dissipate a part of impact energy, and then the magnetic conduction rigid structural member 2 slides in the radial direction and rotates in the annular direction relatively and has no working current, namely, when no magnetic field exists, the matrix of the magnetorheological elastic structural member 3 generates shear deformation and extrusion deformation to dissipate a part of impact energy; or when the adjustable working current is introduced, namely a controllable magnetic field exists, the magnetorheological elastic structural part 3 generates a magnetorheological effect, and the magnetorheological shearing deformation and the magnetorheological extrusion deformation of the magnetorheological elastic structural part also dissipate part of impact energy; finally, the rotational energy consumption unit 100 is subjected to uneven collision contact by the vehicle weight, so that the rotational energy consumption unit 100 is subjected to torsional deformation, namely the magnetorheological elastic structural member 3 is subjected to torsional deformation, and impact energy is further consumed. During the whole four-stage energy dissipation process, the vehicle volume and the vehicle speed are reduced until the vehicle is stopped.
In addition, in the whole energy dissipation process, as the rotatable energy consumption unit 100 generates reaction force on the vehicle, the vehicle running included angle alpha is further reduced, and as can be known from monotonicity of a trigonometric function, the F1 is increased along with the reduction of the vehicle running included angle alpha, and the F2 is reduced along with the reduction of the heavy-duty vehicle running included angle alpha, so that most of impact force originally borne by a single guard rail is converted into F1 (the conversion coefficient is cos (alpha)), and is transmitted to a plurality of upright posts 17 by a cross beam 19 with higher rigidity in the direction along the road, the rigidity of the cross beam 19 in the direction along the road is further increased by a support beam 21 between the upright posts 17, the load peak value of the single upright post 17 is greatly reduced, and the whole multi-stage energy consumption ensures that the vehicle, particularly the heavy-duty transport vehicle, does not rush out of the guard rail.
According to the protective guard of the embodiment, through the quadruple energy dissipation process of the rotatable energy consumption unit, the energy of a vehicle impacting the protective guard can be greatly consumed, and the impact damage of the impact on the upright post of the protective guard is reduced or reduced, so that the vehicle is prevented from falling, and the driving direction of the vehicle can be corrected to a certain extent through the relative rotation of the elastic plastic structural member and the rigid structural member of the rotatable energy consumption unit.
In addition, because the rotatable energy consumption unit can be dismantled with the stand and be connected, the rail guard adopts the modularized design promptly, after the rotatable energy consumption unit is destroyed, can change easily conveniently, and the maintenance face is very little.
The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (17)
1. A rotatable energy consuming unit, comprising:
a stem;
the magnetorheological elastic laminated structural part is cylindrical and comprises magnetic-conductive rigid structural parts and magnetorheological elastic structural parts which are alternately arranged around the core column, and the adjacent magnetic-conductive rigid structural parts can move relatively through the magnetorheological elastic structural parts;
the excitation coil is arranged in the coil accommodating cavity and is used for generating a magnetic field which acts on the magnetorheological elastic structural part to enable the magnetorheological elastic structural part to generate a magnetorheological effect;
the magnetic conduction sealing guard plate surrounds and covers the magnetorheological elastic laminated structural part and is used for conducting a magnetic field generated by the excitation coil;
and the magnetic conductive ring plate is fixed on the core column and positioned below the magnetorheological elastic laminated structural member, and the periphery of the magnetic conductive ring plate is connected with the magnetic conductive sealing guard plate and used as a descending section of the magnetic field.
2. The rotatable energy unit of claim 1, further comprising:
the inner support plate is arranged around the core column, is positioned below the magnetorheological elastic laminated structural component and above the magnetic conductive ring plate and is used for supporting the magnetorheological elastic laminated structural component;
the inner supporting plate, the magnetic conductive ring plate and the magnetic conductive sealing protective plate enclose the coil accommodating cavity.
3. The rotatable energy consuming unit of claim 2, further comprising a magnetic isolation ring plate and an annular magnetic isolation gap below the magnetic isolation ring plate disposed between the inner support plate and the magnetically conductive sealing shield.
4. The rotatable energy unit of claim 1, further comprising:
and the end supporting plate is arranged on the core column at a position corresponding to the magnetic conduction sealing guard plate and is used for supporting and fixing the magnetic conduction sealing guard plate.
5. The rotatable energy consuming unit of claim 4, wherein the magnetically conductive sealing shield comprises a main body portion parallel to the stem and an inwardly extending portion extending from the main body portion toward the stem, the inwardly extending portion being fixedly connected to the end support plate to jointly seal the MR-ELF stack structure with the end support plate.
6. The rotatable energy consuming unit of claim 5, wherein the inner extension portion of the magnetically conductive seal guard is spaced apart from the stem, and the outer periphery of the end support plate is spaced apart from the main body portion of the magnetically conductive seal guard, such that the magnetically conductive seal guard is compressible inwardly when subjected to an external force.
7. The rotatable energy unit of claim 5, further comprising:
a sealing plate disposed outside the end support plate and between the inner extension and the stem.
8. The rotatable energy unit of claim 1, wherein a shock absorber layer is disposed over the magnetically permeable sealing shield.
9. The rotatable energy consuming unit of claim 8, wherein a light reflecting layer is disposed on a surface of the shock absorbing layer.
10. The rotatable energy unit of claim 1, further comprising:
the pressure sensor is used for detecting the impact force borne by the rotatable energy consumption unit;
and the control circuit controls the on-off and the magnitude of the working current of the excitation coil based on the detection result of the pressure sensor.
11. A guard rail, comprising: a mast spaced above the ground, on which mast a rotatable energy consuming unit according to any one of claims 1-10 is disposed.
12. The guard rail of claim 11, wherein the stem of the rotatable energy consuming unit is detachably sleeved on the upright.
13. The guard rail according to claim 12, wherein the stem and the post are fixedly connected together by a pin key or interference fit.
14. The guard rail according to claim 11, wherein a cross beam is provided at a position corresponding to upper and lower surfaces of the rotatable energy consuming unit above the post, and a spacer is provided between the cross beam and the rotatable energy consuming unit.
15. Guard rail according to claim 11, characterized in that an X-shaped support beam is arranged between adjacent posts.
16. The guard rail of claim 11, wherein the rotatable energy units are arranged at intervals along an axial direction of the post.
17. The protective fence of claim 16, wherein the number of rotatable energy-consuming units above each of the posts is greater than or equal to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652239.0A CN107254859B (en) | 2017-08-02 | 2017-08-02 | Rotatable energy consumption unit and have this rail guard that can rotate energy consumption unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652239.0A CN107254859B (en) | 2017-08-02 | 2017-08-02 | Rotatable energy consumption unit and have this rail guard that can rotate energy consumption unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107254859A CN107254859A (en) | 2017-10-17 |
| CN107254859B true CN107254859B (en) | 2020-08-18 |
Family
ID=60025644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710652239.0A Active CN107254859B (en) | 2017-08-02 | 2017-08-02 | Rotatable energy consumption unit and have this rail guard that can rotate energy consumption unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107254859B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560451B (en) * | 2018-05-29 | 2020-04-17 | 东南大学 | Guardrail anti-collision device utilizing eddy current |
| CN110067220A (en) * | 2019-05-06 | 2019-07-30 | 重庆邮电大学 | A kind of type rotary anti-collision guardrail based on magnetorheological glue |
| CN114775488B (en) * | 2022-05-18 | 2022-11-22 | 徐州聚能道路安全设施有限公司 | Road safety anticollision barrier |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050032830A (en) * | 2003-10-02 | 2005-04-08 | 학교법인 울산공업학원 | Apparatus of mending for pier |
| CN101586641A (en) * | 2009-06-23 | 2009-11-25 | 武汉理工大学 | The laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance |
| CN102733483A (en) * | 2012-07-02 | 2012-10-17 | 大连理工大学 | Variable rigidity shock insulation integral intelligent support seat |
| KR20130082330A (en) * | 2012-01-11 | 2013-07-19 | 한국과학기술원 | Semi-active seismic isolation devices |
| CN103290943A (en) * | 2013-05-30 | 2013-09-11 | 河海大学 | Multipurpose initiative controllable large-output vibration insulating and damping device |
| CN106032661A (en) * | 2016-05-18 | 2016-10-19 | 长安大学 | Pier collision prevention device with variable rigidity and method |
| CN106427850A (en) * | 2016-12-02 | 2017-02-22 | 李扬扬 | Anti-collision beam, control system thereof and vehicle |
-
2017
- 2017-08-02 CN CN201710652239.0A patent/CN107254859B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050032830A (en) * | 2003-10-02 | 2005-04-08 | 학교법인 울산공업학원 | Apparatus of mending for pier |
| CN101586641A (en) * | 2009-06-23 | 2009-11-25 | 武汉理工大学 | The laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance |
| KR20130082330A (en) * | 2012-01-11 | 2013-07-19 | 한국과학기술원 | Semi-active seismic isolation devices |
| CN102733483A (en) * | 2012-07-02 | 2012-10-17 | 大连理工大学 | Variable rigidity shock insulation integral intelligent support seat |
| CN103290943A (en) * | 2013-05-30 | 2013-09-11 | 河海大学 | Multipurpose initiative controllable large-output vibration insulating and damping device |
| CN106032661A (en) * | 2016-05-18 | 2016-10-19 | 长安大学 | Pier collision prevention device with variable rigidity and method |
| CN106427850A (en) * | 2016-12-02 | 2017-02-22 | 李扬扬 | Anti-collision beam, control system thereof and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107254859A (en) | 2017-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107254859B (en) | Rotatable energy consumption unit and have this rail guard that can rotate energy consumption unit | |
| CN100497063C (en) | Steering apparatus | |
| WO2012022016A1 (en) | Safety protection apparatus of elastic-plastic steel structure | |
| CN113700363B (en) | Assembled easy-resetting rotary energy consumption node | |
| CN207032101U (en) | A kind of guard rail for revolving power consumption unit and power consumption unit being revolved with this | |
| CN209923758U (en) | Annular rubber multi-dimensional damping support | |
| CN101011825A (en) | Safety type rigidity variable mechanical joint | |
| CN115182284B (en) | Anti-collision guardrail for vehicle | |
| KR20190136688A (en) | Safety barrier | |
| CN215670233U (en) | Friction compound type buckling restrained brace | |
| CN214007877U (en) | Magneto-rheological buffer with series-parallel structure | |
| CN214695125U (en) | UHPC shell energy-absorbing slow-release bridge pier | |
| CN105735721B (en) | A kind of high-strength large deformation C-shaped shell runback bit architecture | |
| CN212742173U (en) | Assembled pier buffering and anti-collision device | |
| CN104018448A (en) | Truss stand-column anti-collision guard | |
| CN211571375U (en) | Assembled elastic-plastic energy consumption device and rigid frame bridge thereof | |
| CN114482291A (en) | Rubber shock insulation support | |
| EP3604678A1 (en) | Seismic isolation bearing | |
| CN109798310B (en) | Sectional type intelligent shock isolator with anti-impact characteristic | |
| CN111395157A (en) | Annular rubber multi-dimensional damping support | |
| JP3316665B2 (en) | Light load seismic isolation device | |
| JP6809951B2 (en) | Connection vibration isolation device for seismic isolation bearings | |
| CN220724921U (en) | Road anti-collision barrel | |
| CN215052027U (en) | Anti-collision protection device for viaduct bridge pier | |
| CN115289159A (en) | Composite material and aluminum honeycomb combined buffering anti-collision device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |