GB2187491A

GB2187491A - Portable road barrier

Info

Publication number: GB2187491A
Application number: GB08605248A
Authority: GB
Inventors: I-Chang Jsai
Original assignee: JSAI I CHANG
Current assignee: JSAI I CHANG
Priority date: 1986-03-04
Filing date: 1986-03-04
Publication date: 1987-09-09
Also published as: GB8605248D0

Abstract

A portable road barrier comprises: a portable housing (1) for enclosing a laxy tong frame (2) in a contracted condition, one end of said lazy tong frame being connected to the housing (1) with a remote end of said frame being connected to a support pillar (3) so that the frame in an expanded condition is capable of being supported between the housing and the pillar, said frame being provided with a coating of luminous material on the opposing major planar surfaces thereof and having a plurality of spikes (21) connected to at least one of the arms of a crossed pair of arms of the lazy tong frame, said spikes projecting outwardly from the frame for flattening a tyre of a vehicle attempting to run over the barrier. <IMAGE>

Description

SPECIFICATION A portable luminous road interceptor BACKGROUND AND SUMMARY OF THE IN VENTION This invention relates to a portable luminous road interceptor.

Abatises are often used to prevent non-authorised persons or pedestrians from intruding into construction sites or traffic control areas.

These abatises are usually made of diagonal stays, angle iron or metal plates. They are so large and heavy that it is very inconvenient to carry and use, especially when they are tentatively used. In view of this, the inventor developed a portable luminous road interceptor.

The present invention seeks to mitigate the foregoing difficulties.

The interceptor comprises: a case having a door at the front side four foldable legs and holding recesses on left and right sides, and a handle on the top side for holding, said foldable legs being able to stretch out to support the case and to snap back for packing; a fixed post made in an integral part of the case and having a guide groove; a puller post having two foldable legs and packing recesses on the left and right sides, a handle on the front side, two guide grooves on the back side, and a roller on the bottom end; a folding frame consisting of diagonal stays movably fixed with studs and guide grooves to the fixed post and puller post and having tyre-flattening spikes on the front sides of the stays.

To use, the foldable legs of the case are pulled out to support the case and the folding frame is pulled out for interceptinhg purpose.

If a vehicle to be intercepted hits and runs over the interceptor, the tyre-flattening spike will pierce and flatten the tyre immediately and the vehicle has to stop.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a vertical view of the portable luminous road interceptor of this invention; Figure 2 illustrates the application of the said interceptor; Figures 3A and 3B are sectional views of the said interceptor; Figures 4A and 4B are sectional views of the folding frame of the said interceptor; Figure 5 is an exploded view of the stays of the said frame; Figure 6 is a vertical view of the tyre-flattening spike of the said frame; Figure 7 is a cross section of the tyre-flattening spike by A-A line shown in Fig. 6; Figure 8 illustrates the application of the said tyre-flattening spike; Figure 9 is a vertical view of the foldable legs of another embodiment of this invention; Figures lOA and 10B are sectional views of the folding frame of said another embodiment;; Figure ii is a side view of the foldable legs of said another embodiment.

DETAILED DESCRIPTION OF THE INVENTION As shown in Fig. 1, the rectangular case 1 has two pairs of foldable legs 11 and holding recesses 111 respectively on the left and right sides. With a spring in the knuckle (not shown), the leg 11 will fold up to be packed and stretch out to support the case when it is pulled up and down. (It can move in 90" with 45" as a centre). When it is pulled down from the recess 111 in an angle exceeding 45 , the foldable leg 11 will snap open horizontally.

When it is pulled up from the horizontal posture in an angle exceeding 45 , the foldable leg 11 will snap back to the holding recess 111. The case 1 also has a handle 12 on the top and a door 13 at the front side for the folding (lazy tong type) frame 2 (as shown in Fig. 2) in the case to be pulled out for use or to be packed-in after use.

As shown in Figs. 3A to 4B, the folding frame 2 in the case 1 comprises two rows of diagonal stays 23 movably joined together one by one at the centre by means of a pin.

The top end of the first diagonal stay 23 of the front row is slidably connected to the fixed post 14 by means of a stud 142 on the end and a guide groove 141 in the post 14.

The bottom end of the first diagonal stays 23 of the rear row is movably fixed to the bottom end of the fixed post 14. A grooved rail 22 is provided on the bottom of the case 1 for the folding frame 2 to slide on. The last diagonal stays 23 of the front and rear rows of the folding frame 2 are connected in the same way to the puller post 3 which also has a guide groove 32. To prevent the unfolded frame 2 from being further unfolded or folded, a second guide groove 33 is provided along the guide groove 32 in the puller post 3 and a locking screw 34 is provided on the stud 233 of the stay 23 to lock or unlock the stud 233 and to prevent the folding frame from being further unfolded or folded. To facilitate the pulling and standing of the puller post 3, a roller 36 is provided on the bottom of the puller post 3 and two foldable legs 31 and holding recesses 311 on the sides of the same.A handle 35 is also provided on the left side of the puller post 3 for holding purposes. In addition, a plurality of tyre-flattening pikes 21 is provided on the front side (toward the coming vehicle to be intercepted) of the diagonal stays of the front row of the folding frame, which will pierce and flatten the tyre of a vehicle attempting to run the blockade and help intercept the vehicle.

As shown in Figs. 5, 6 and 7, the diagonal stay 23 consists of two attachments 232 (made of plastic or wood) and a metal plate 231. The attachments 232 and the metal plate 231 have holes 212 for the tyre-flattening spikes 21 to insert in. To facilitate the inserting, removing or replacing of tyre-flattening spikes 21, rubber bushings are provided in the holes 212. The tyre-flattening spike 21 is shaped like a crosshead cone and has long curved air grooves 215 on four sides. The tyre-flattening spike 21 has cross holes 213 near the front end of the air grooves 215 and connected to the central longitudinal hole 214 to let the air out of the tyre quickly after it pierces the tyre, and to help intercept the vehicle running the blockade.

Since the tyre-flattening spike 21 is inserted in the rubber bushing 211 as shown in Fig. 5, it is easy to extract. When a vehcle hits the interceptor (the foldable legs 11 snap back) and runs over the diagonal stays 23, the tyreflattening spike 21 will pierce the tyre 4 and be extracted from the stay 23 as shown in Fig. 8. With the cross air holes 214 and the central hole 213, the tyre-flattening spike 21 flattens the tyre quickly and the vehicle cannot run any longer. Thus, the vehicle is intercepted and the attempt to run the blockade is defeated. And it is very easy to repair the stays 23 hit by the vehicle and to recover or replace the spikes 21 removed by the same.

Experiments showed that the tyre of a vehicle ran the interceptor of this invention at the speed of 60-80 m.p.h. become flat in 300-400 meters after being pierced by the tyre-flattening spike and that at the speed of 40-50 m.p.h. in about 200-300 meters. Fig.

9 shows another embodiment of this invention. The rectangular case 1 has two holding recesses 46 in inverted V shape and two foldable legs 43 and propping pieces 44 on the front and back side. Each of the foldable legs 43 has a guide slot 431 where the fitted pin 441 of the U connector of the propping piece 44 slides. The foldable leg 43 and the propping piece 44 are joined in such way that the leg 43 can be stretched to support the case 1 and packed in the recess 46 after use. To prevent the packed legs 43 from falling off, a spring catch 45 is provided at the top of each recess 46. In addition, a handle 42 is provided at the top side of the case 1. The front side of the case 1 is made into a door 41 to facilitate the pulling of the folding frame 7 as shown in Fig. 10A.

As shown in Figs. 10A, 10B and 11, the top ends of first and last stays 71 of the front row of the folding frame 7 are respectively and movably connected to the fixed post 5 which is made in an integral part of the case 1, and the puller post 6. Both the fixed post 5 and the puller post 6 have a guide groove 52, 62 in the upper part for the studs 51, 61 of the diagonal stays 71 of the folding frame to fit and slide. The bottom ends of the first and last stays 7 of the back row are respectively and movably connected to the bottom ends of the fixed post 5 and puller post 6. Thus, the folding frame 7 can be stretched and folded by pulling and pushing the puller post 6. To regulate and lock the folding frame 7, a second groove 63 is provided along the guide groove 62 of the puller post 6.A locking screw 64 fitted in the second groove 63 and screwed to the stud 61 is provided to move with the stud 61 and to lock the folding frame 7 when it is stretched to a desired length. To support the puller post 6 and to facilitate the pulling of the folding frame 7, a pair of foldable legs 66 and propping pieces 67 are provided. Each of the foldable legs 66 has a guide slot 661 for the pin 671 of the U connector of the propping piece 67 to fit and slide so that the foldable leg can be stretched out to support the puller post 6 and packed after use in the holding recess 65 on each side of the puller post 6. The packed legs 66 are caught by the spring catch 651 on the top of each of the holding recesses 65 so that the puller post 6 can be pushed into the case 1 for storage. The foldable legs 66 of the puller post 6 are same in construction as the foldable legs 43 of the case 1 except that they have a roller 68 on the bottom end to facilitate moving of the puller post 6. A handle 69 is provided on the front side of the puller post 6 for holding purposes.

Claims

1. A portable luminous road interceptor comprises: a portable housing for enclosing a lazy tong frame in a contracted condition, one end of said lazy tong frame being connected to the housing with a remote end of the said frame being connected to a support pillar so that the frame in an expanded condition is capable of being supported between the housing and the pillar, said frame being provided with a coating of luminous material on the opposing major planar surfaces thereof and having a plurality of spikes connected to at least one of the arms of a crossed pair of arms of the lazy tong frame and said spikes projecting outwardly from the frame for flattening a tyre of a vehicle attempting to run over the interceptor.

2. A portable luminous road interceptor characterised by comprising: a rectangular case having two foldable legs and holding recesses on both sides, a door at the front end, and a handle on the top; a fixed post made in an integral part of the case and having a guide groove; a grooved rail at the bottom for a folding frame to slideon; a puller post having two foldable legs on left and right sides, a handle on the front side, a guide groove and second groove on the back side, and a roller on the bottom end; a folding frame consisting of a plurality of diagonal stays and moveably fixed to the guide grooves of the fixed post and puller post, said diagonal stays further consisting of a metal plate and two attach ments and having luminous surface and tyreflattening spikes fittied in the holes with bush ings to pierce the tyre of the vehicle attempting to run the blockade.

3. An interceptor according to claim 2 wherein the tyre-flattening spike and four long air grooves in four conical sides and a cross air hole near the point connected to the central air hole so that when the spike pierces the tyre of a vehicle the air in the tyre will be released quickly through the air hole and the vehicle will have to stop.

4. An interceptor according to claim 2 wherein the folding frame and the puller post can be packed in the case and the door can be shut for easy transport and use.

5. An interceptor according to claim 2 wherein the puller post has a locking screw which moves with the stud of the diagonal stay along the guide grooves and is used to lock the following folding frame after being stretched.

6. A portable luminous road interceptor characterised by comprising a rectangular case having two foldable legs and propping pieces on both sides which are joined together with a U connector and a pin in such a way that they can be stretched out to support the case and packed for storage, a folding frame consisting of diagonal stays and a puller post having two foldable legs and propping pieces like those of the case except that the legs have a roller on the bottom end to facilitate the pulling.

7. A portable luminous road interceptor substantially as herein described with reference to and as illustrated in Figs. 1-8 or 9-11 of the accompanying drawings.