This section provides background information to facilitate a better understanding of the various aspects of the disclosure. It should be understood that the statements in this section of this document are to be read in this light, and not as admissions of prior art.
Vehicle barrier systems are used to stop motor vehicles trying to forcibly gain access to a compound or facility. Anti-ram vehicle barriers (AVB) systems or vehicle security barriers (VSB) are configured to stop motor vehicles, such as trucks, which are intentionally crashed into the barrier in an attempt to breach the barrier. Passive barriers (e.g., fences, walls) are static after installation and deployment, in other words, passive barriers “never” allow vehicular access to certain areas, while active barriers (e.g., gates, drop arms, active wedges) control or limit vehicular access to a particular area.
Some anti-ram vehicle barriers are crash tested to ensure compliance with and obtain certification from a recognized standard. For example, the American Standard Test Method (ASTM F2656 Standard Test Method for Vehicle Crash Testing of Perimeter Barriers), British Standard Institute (PAS 68) and the International Organization for Standardization (ISO) and International Works Agreement (IWA 14-1).
The U.S. State Department (DOS) published the certification standard SD-STD-02.01 (Test Method for Vehicle Crash Testing of Perimeter Barriers and Gates) in 1985. The test vehicle was specified as a medium-duty truck weighing 15,000 lb. (6800 kg) and the nominal velocities were 30 mph (50 km/hr.), 40 mph (65 km/hr.) and 50 mph (80 km/hr.). Penetration was measured from the pre-impact attack (front) side of the vehicle security barrier (VSB) and classified into three categories of penetration rating. In 2003, the standard was revised with measuring the penetration from the asset or protected (rear) side of the barrier and the limitation of permissible vehicle penetration to one meter (the highest level of penetration rating).
In 2007, the SD-STD-02.01 was replaced with ASTM F2656-07. This new standard included the medium-duty truck and added three new test vehicle types, a small passenger car, pickup truck, and heavy good truck. ASTM F2656-07 maintained three predetermined impact velocities for each vehicle category and the penetration is measured from the rear face of the barrier and classified into four categories of penetration rating. ASTM F2656 was revised in 2015 (ASTM F2656-15) to include two additional vehicle types, a full-sized sedan and a cab over/cab forward class 7 truck and it excluded the lowest penetration rating (P4).
The vehicle rating is designated with a prefix indicating the test vehicle weight: “M” prefix designates a medium duty vehicle with a gross weight of 15,000 pounds (6,810 kg), “C” prefix designates a car having a vehicle weight of 2,430 pounds (1,100 kg), “PU” prefix designates a pickup having a vehicle weight of 5,070 pounds (2,300 kg), and “H” prefix designates a heavy goods vehicle having a vehicle weight of 65,000 pounds (29,500 kg). The penetration ratings include P1 for less than or equal to 1 meter (3.3 ft.); P2 for 1.10 to 7m (3.31 to 23.0 ft.); P3 for 7.01 to 30m (23.1 to 98.4 ft.); and, prior to 2015, P4 for 30m (98 ft.) or greater.
An ASTM F2656 crash tested vehicle barrier is rated based on the test vehicles weight (e.g., M, C, PU, H), the speed (miles per hour) of impact (e.g., 30, 40, 50, 60), and the penetration (P1, P2, P3, and P4) of the vehicle. For example, an M50-P1 crash barrier is designed to stop a medium duty truck traveling 50 mph with a penetration distance of 3.3 feet or less.
In 2005, the British Standard Institute (BSI) published PAS 68:2005 Specification for Vehicle Barriers: Fixed Bollards. The standard was expanded within two years to include other types of barriers, such as gates and road blockers. The 2013 version, “Impact Test Specifications for Vehicle Security Barrier Systems,” rates vehicle barrier systems based on six types of test vehicles, including seven test speeds, and penetration is measured from the rear (protected side) face of the barrier. PAS 68 defines the vehicle type, penetration, dispersion of debris and records the angle of the vehicle's approach. The PAS 68 rating includes a 5-to-7-part classification code, the includes: Classification of Test/Gross Weight of Vehicle (kg) (Vehicle Class)/Impact Speed/Angle of Impact: Distance Leading Edge of Load Bay travels beyond the Original Position of Rear Face/Dispersion Distance of major debris weighing 25 kg or more from the barrier to establish standoff distance. For example, a barrier (bollard) tested by impact by a 7500 kg day cab (“V”) at a ninety-degree angle traveling 80 km/hr. and resulting in penetration of 7.5 m with significant debris scattered up to 20.0 m away would be designated as V/7500(N3)/80/90:7.5/20.0. The dispersion distance may be utilized to determine a standoff distance for example to mitigate damage from a vehicle born improvised explosive device (VBIED)
The European Committee for Standardization (CEN) recognized across 34 European countries has produced a standard CWA 16221 that combines details of BS PAS 68 and PAS 69. PAS 69 provides guidance on the barrier's use and installation.
In 2013, the International Works Agreement (IWA) 14-1:2013 was published to provide an international specification for crash testing. The system was developed by government agencies, military bodies and providing companies from the USA, UK, Germany, Norway, Oman, Singapore, and Syria. This standard includes a merging of the British PAS 68 and the American ASTM F2656 vehicle impact test specifications. This international standard assesses vehicle barrier performance based on nine types of test vehicles with up to seven test speeds. Penetration is measured from the front (attack side) face of the vehicle safety barrier. The IWA 14-1 classification code represents Vehicle Impact Test/Gross Weight of Vehicle (Vehicle Class)/Impact Speed/Angle of Impact/Penetration beyond the original position of the front/impact face.
Entry through vehicle access points is often controlled by gates, such as drop arm gates, however, such access gates are not typically anti-ram crash-rated barriers. At secure locations, the vehicle gates are commonly permanent installations, which facilitate erecting a gate assembly that is secured in a below-grade foundation that can absorb the energy of an impacting vehicle and arrest the forward progress of the vehicle. Commonly, anti-ram type barriers are constructed as massive obstructions to function, by their own mass and/or positioning in the ground, as an immovable mass to stop an impacting vehicle.
An illustrative vehicle gate assembly includes a base having a width extending laterally to define a vehicle passage and having a depth extending perpendicular to the width from a front edge of the base to a back edge of the base, a hinge post extending vertically from the base on a first lateral side of the vehicle passage, a latch post assembly extending vertically from the base on a second lateral side of the vehicle passage, wherein the latch post assembly includes first and second latch posts each having an inner face, the first and second latch posts spaced apart from each other to form a latch post gap between the inner faces, the inner faces extending parallel with the width, a first slot formed in the inner face of the first latch post, the first slot comprising a first primary vertical slot extending from an open top end of the first primary vertical slot at a top side of the first latch post to a first bottom end of the first primary vertical slot and a first horizontal slot extending from the first bottom end toward the hinge post, a second slot formed along the inner face of the second latch post, the second slot comprising a second primary vertical slot extending from an open top end of the second primary vertical slot at a top side of the second latch post to a second bottom end of the second primary vertical slot and a second horizontal slot extending from the second bottom end toward the hinge post, a beam having a first beam end connected to the hinge post and a second beam end, the beam movable between an open position to allow vehicles to drive through the vehicle passage and a closed position blocking the vehicle passage, a first pin end extending from the second beam end, and a second pin end extending from the second beam end, wherein when the beam is in the closed position the first pin end is disposed in the first slot and the second pin end is disposed in the second slot.
Another illustrative vehicle gate assembly includes a base having a width extending laterally to define a vehicle passage and having a depth extending perpendicular to the width from a front edge of the base to a back edge of the base, a first post extending vertically from the base on a first lateral side of the vehicle passage, a second post extending vertically from the base on a second lateral side of the vehicle passage, a slot formed in a face of the second post, the slot comprising a primary vertical slot extending from an open top end of the primary vertical slot at a top side of the second post to a bottom end of the primary vertical slot and a horizontal slot extending from the bottom end toward the first post, a beam having a first beam end connected to the first post and a second beam end, the beam movable between an open position to allow vehicles to drive through the vehicle passage and a closed position blocking the vehicle passage, and a latch pin extending from the second beam end and disposed in the slot when the beam is in the closed position.
This summary is provided to introduce a selection of concepts that are further described below in the detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of claimed subject matter.
The disclosure is best understood from the following detailed description when read with the accompanying figures. It is emphasized that, in accordance with standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of various features may be arbitrarily increased or reduced for clarity of discussion.
It is to be understood that the following disclosure provides many different embodiments, or examples, for implementing different features of various embodiments. Specific examples of components and arrangements are described below to simplify the disclosure. These are, of course, merely examples and they are not intended to be limiting. For example, a figure may illustrate an exemplary embodiment with multiple features or combinations of features that are not required in one or more other embodiments and thus a figure may disclose one or more embodiments that have fewer features or different combination of features than the illustrative embodiment. Therefore, combinations of features disclosed in the following detailed description may not be necessary to practice the teachings in the broadest sense and are instead merely to describe particularly representative examples. In addition, the disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Conditional language used herein, such as, among others, “can,” “might,” “may” “e.g.,” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements and/or states. Thus, such conditional language is not generally intended to imply that features, elements and/or states are in any way required for one or more embodiments or that one or more embodiments necessarily include such elements or features. Further, the figures may illustrate exemplary embodiments that show features or combination of features that are not required in one or more embodiments and thus a specific figure may disclose one or more embodiments that have fewer features or different combination of features than those shown in the illustrated embodiment.
As used herein, the terms “connect,” “connection,” “connected,” “in connection with,” and “connecting” may be used to mean in direct connection with or in connection with via one or more elements. Similarly, the terms “couple,” “coupling,” and “coupled” may be used to mean directly coupled or coupled via one or more elements. Terms such as “up,” “down,” “top,” and “bottom” and other like terms indicating relative positions to a given point or element may be utilized to describe some elements more clearly. Commonly, these terms relate to a reference point such as the ground level. The terms “substantially,” “approximately,” “generally,” and “about” are defined as largely but not necessarily wholly what is specified (and includes what is specified; e.g., substantially 90 degrees includes 90 degrees and substantially parallel includes parallel), as understood by a person of ordinary skill in the art. The extent to which the description may vary will depend on how great a change can be instituted and still have a person of ordinary skill in the art recognized the modified feature as still having the required characteristics and capabilities of the unmodified feature.
Gate assemblies are disclosed herein for positioning at vehicle access crossings into a protected area. The protected area may be a temporary or permanent area into which entry is limited, at least limited to motor vehicles through the one or more vehicle access locations. Non-limiting examples of protected areas include parking garages and surface parking areas, grounds for sporting events and celebrations, and high-security locations such as government, military and business installations and power generating and distribution installations.
Portable gate assemblies can be transported as a unit for example on a light or medium-duty truck and positioned at the vehicle access location to the protected area. Portable gate assemblies include assemblies that can be placed on a ground surface and utilized without being physically secured below the ground surface. Portable gate assemblies can also be secured on top of the ground surface and utilized as what is also known as a surface mounted gate, for example, a base (e.g., tread plate) may be placed on the ground surface and secured in place with fasteners. As will be understood by those skilled in the art with the benefit of the disclosure, aspects of the example portable gate assemblies can be utilized in active barrier systems that are erected on-site and secured in the ground foundation or a semi-permanent fixture associated with the ground foundation.
In accordance with embodiments of the disclosure, the portable gate assemblies are configured to provide a requisite stopping capability in the event that a motor vehicle, such as a 15,000 pounds (6.8 metric tons) medium-duty truck, crashes into the portable gate. In accordance with embodiments of the disclosure, a requisite stopping capability will be in accordance with standards established for example by ASTM F-2656, which identifies impact conditions including the vehicle weight, impact velocity, and penetration distance. With reference to a medium-duty truck, having a weight of about 15,000 lb.±309 lb. (6,800 kg±140 kg), the speed ratings include M30 for traveling at 28.0 to 37.9 miles per hour (mph), M40 traveling at 38.0 to 46.9 mph, and M50 traveling at 47.0 mph and above. The penetration ratings include P1 for less than or equal to 1 meter (3.3 ft.); P2 for 1.10 to 7 meters (3.31 to 23.0 ft.); and P3 for 7.01 to 30 meters (23.1 to 98.4 ft.). For example, an ASTM F2656 crash-rated M50-P1 barrier is designed to stop a medium duty truck traveling 50 mph with a penetration distance of 3.3 feet or less.
In accordance with at least one embodiment, the gate assembly is configured to achieve an M30 speed rating with a P1 penetration rating. In accordance with at least one embodiment, the portable gate assembly is configured to achieve an M30 speed rating with a P2 penetration rating. In accordance with at least one embodiment, the portable gate assembly is configured to achieve a M30 speed rating with a P3 penetration rating.
In accordance with at least one embodiment, the gate assembly is configured to achieve an M40 speed rating with a P1 penetration rating. In accordance with at least one embodiment, the gate assembly is configured to achieve an M40 speed rating with a P2 penetration rating. In accordance with at least one embodiment, the gate assembly is configured to achieve an M40 speed rating with a P3 penetration rating.
In accordance with at least one embodiment, the gate assembly is configured to achieve an M50 speed rating with a P1 penetration rating. In accordance with at least one embodiment, the gate assembly is configured to achieve an M50 speed rating with a P2 penetration rating. In accordance with at least one embodiment, the gate assembly is configured to achieve an M50 speed rating with a P3 penetration rating.
Some embodiments may be configured to achieve similar speed and penetration ratings for impact vehicles such as cars having a weight up to about 2,430 lb. (1,100 kg) (e.g., C40, C50, C60) and heavy goods vehicles having a weight of about 65,000 lb. (29,500 kg) (e.g., H30, H40, H50).
Referring in particular to
Base 12 is placed on top of ground level 5 (
Portable gate assembly 10 can be transported and delivered to the vehicle access location for example on the back of a flat-bed vehicle or in a trailer that may be towed behind a vehicle such as a car, pickup, light- or medium duty truck. Portable gate assembly 10 can be offloaded and positioned on top of the ground surface at the vehicle access location. Portable gate assembly 10 may be operable immediately or within minutes of placement on the ground surface. For an automated or otherwise mechanically actuated barrier arm embodiment, portable gate assembly 10 may be operational upon connecting a power source. In some embodiments, the portable gate may include a power source. In some embodiments, the barrier arm may be manually hand-operated between the open and closed positions.
Referring in particular to
With reference in particular to
In
With reference in particular to
Each of latch posts 20a, 20b forms a slot 36 that is open along inner face 20c. The slots on the respective latch posts 20a, 20b are mirror images across gap 21. Each slot 36 extends from a first top end 38 open at top side 31 of latch post 20a, 20b along a first or primary vertical slot 40 to a first bottom end 42 and extends horizontally along a horizontal slot 44 in the direction toward hinge post assembly 18 to a second bottom end 46. In an example embodiment, slot 36, e.g., J-slot, includes a trap or second vertical slot 48 that extends vertically upward, toward top end 31, to a terminal end 50 that is located below top side 31 and closed to top side 31.
In operation, when portable gate assembly 10 is in the normally closed position as illustrated for example in
When a motor vehicle impacts barrier 22 with sufficient force, barrier 22 will bend and draw latch end 25 with latch pin 27 inward toward hinge post assembly 18. During the impact, latch pin 27 will travel along horizontal slot 44. When latch pin 27 is in horizontal slot 44, or trap 48, barrier 22 is engaged with latch post assembly 20 and it cannot move vertically or horizontally out of engagement with latch post assembly 20. The horizontal and vertical directions are defined generally with reference to base 12 being a bottom, horizontal member of the gate assembly. For example, vertical is substantially perpendicular to base 12 and horizontal is substantially parallel to base 12.
When a vehicle 52 impacts with a sufficient force, portable gate assembly 10 will tip or pivot about protected-side edge 16, as illustrated in
The foregoing outlines features of several embodiments so that those skilled in the art may better understand the aspects of the disclosure. Those skilled in the art should appreciate that they may readily use the disclosure as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages of the embodiments introduced herein. Those skilled in the art should also realize that such equivalent constructions do not depart from the spirit and scope of the disclosure and that they may make various changes, substitutions, and alterations herein without departing from the spirit and scope of the disclosure. The scope of the invention should be determined only by the language of the claims that follow. The term “comprising” within the claims is intended to mean “including at least” such that the recited listing of elements in a claim are an open group. The terms “a,” “an” and other singular terms are intended to include the plural forms thereof unless specifically excluded.
Number | Date | Country | |
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62522035 | Jun 2017 | US |
Number | Date | Country | |
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Parent | 17948229 | Sep 2022 | US |
Child | 18617333 | US | |
Parent | 17158174 | Jan 2021 | US |
Child | 17948229 | US | |
Parent | 16011860 | Jun 2018 | US |
Child | 17158174 | US |