CA1223762A

CA1223762A - Gate

Info

Publication number: CA1223762A
Application number: CA000455918A
Authority: CA
Inventors: Franciscus B.M. Ruigrok
Original assignee: HERAS HOLDING BV
Current assignee: HERAS HOLDING BV
Priority date: 1983-06-06
Filing date: 1984-06-05
Publication date: 1987-07-07
Also published as: AU2876184A; DE8400059U1; JPH0639871B2; AU572148B2; JPS6070294A; ATE32769T1

Abstract

ABSTRACT
A gate for closing a passage comprises essentially a post and one part movable with respect to the post formed by an assembly of standing spikes inter-connected by a transverse tie. The transverse tie is formed by at least one girder having at least two openings each adapted to receive a spike, each spike being provided with tie means for fastening to the girder.
The tie means may be a single rod-shaped element passed through all spikes and fastened at both ends through an anchoring member to the girder.

Description

6~

The invention relates to a gate for closing a passage mainly comprising at least one post and a part movable with respect to said post and being formed by a set of standing spikes or pickets interconnected by a transverse tie.
Gates of the type described above are generally formed by a rectangular framework, in which the spikes are arranged. Such frameworks must have sufficient rigidity to avoid deformations in the vertical plane. This requires, therefore, a relatively heavy structure with much ma-terial. A further inconvenience is that such a gate has to be fully finished in the factory and then be transported to the place of destination, which involves transport problems.
The invention provides a ga-te assembly comprising an elongate girder adap-ted to be disposed in generally horizontal, elevated position and a plurality of upstanding pickets carried by said girder, support post means for supporting said girder to move between open and closed positions, and at least one flexible tension element passing longi-tudinally through said girder and anchored in tensioned condition adjacent the opposite ends of the girder to exert longitudinal compression on said girder.
Since the construction is thus limited -to practically one main girder and vertical pickets or spikes, it can be transported in the unmounted state, the final assembly being carried out at the place of use. The final assembly is relatively simple and addi-tional welding operaticns may be rendered redundant. The component elements can be protected separately in the factory agains-t corro-sion due to weather conditions without this protection being deteriorated in the final assembly.

f~

-2~ 7~

In a preferred embodiment as a tie means a single rod-shaped element is passed through all spikes (pickets) and fastened at both ends -to an anchoring member of the girder.
Preferably the girder is constructed in the form of a hollow profile, the clamping element being housed in the profile.
Apart from an improvemen-t in aesthetic appearance, a satisfactory protection of the clamping element is obtained.
In a fur-ther embodiment the anchoring element can be drawn against a head face of the girder, whilst the anchoring element carries a hinge part for the hinge -to be fastened to the pos-t. By this embodiment a turngate can be ob-tained which is distinguished from conventional turnga-tes in that now a ver-tical load on the girder results in the girder being urged downwards, the prestressing elemen-t absorbing the forces, this element moving the girder upwards again when the load is removed. In this way a very "flexible" gate construction is obtained, whilst the hinge remains free of load.
In a further embodiment the girder is provided with a guide rail for a guide member and at least one post, for example, a roller, a sliding piece or the like. In this way a sliding gate can be ob-tained by simple means.
The girder may have an open hollow profile capable of accommodating -toothed rack parts so that the teeth protrude out of the profile. By this step the length of the toothed rack serving for sliding the gate to and fro by a motor can be readily adapted to the length of the girder.
The above mentioned and further features will become apparent from the following descrip-tion of the figures showing a -2a-~.~23~6;~
fe~ embodiments.
The drawing shows in:
Figure 1 a perspective view of a turngate embodying the invention, Figure 2 a perspective view of the turngate of Figure 1 on an enlarged scale, Figure 3 a perspective view of the stretching element used in the turngate of Figure 1, Figure 4 a perspective view of a sliding gate embodying the invention, _3- ~2~3~

Fig. 5 a cross-sectional view of the girder used in the sliding gate of fig. 4~
Fig. 6 a perspective view of part of the profile of fig. 7, Fig. 7 a perspective view of a closing member in a double turngate~
Fig. ~ a sectional view taken on the line VIII-VIII in fig. 7.
Referring to figs 1 to 3 the swing gate mainly 10 comprises a horizontal girder 1 provided with a sequence of continual holes in the direction of length, each of which can receive spikes 2 in a vertical sense. The girder is fastened at one end to a pivot 3 carried by a post 4 at the side of the passage. To the post 4 can be joined railings in known 15 manner.
The horizontal girder 1 is formed by a hollow profile (see fig. 2) having the sequence of holes for recei-ving the spikes 2 in the upper and lower faces. In the hollow profile is arranged a fastening element formed by a clamping 20 wire or rod 6, which is passed through transverse holes 7 of each spike 2. One end of the clamping rod 6 is provided with ; a head part or knob 7, which fits in a saddle support 8. The support 8 is fastened to a head plate 9 having a circumferen-tial ridge 10 which slidably fits in the hollow profile 1~
25 the head face of the hollow profile 1 bearing on a projecting rim part 11. The plate 9 with the circumferential ring 10 and the rim part 11 is fastened to a pivot wing 12.
The other end of the clamping element or rod 6 is provided with clamping means 13, which bear on an end part 30 14~ whose shaft 15 also fits inside the hollow profile 1 and whose collar 16 bears on the head face of the hollow profile.
The shaft 15 is depressed so that the clamping means 13 are located completely inside the end part 14. The opening of the shaft 15 can be closed by a lid 17.
The gate described above is assembled as fol-1 ows .
It is assumed that all component parts have to be assembled at the place of use. The profile 1 is first pro-~ 23~

vided with spikes 2 by passing them through the sequence of holes of the profile. The spikes 2 are arranged in the pro-file 1 in a manner such that the continous holes 7 are appro-ximately registering, after which the clamping element 6 can 5 be passed through the holes 7. Then one end, which may al-ready be provided with a knob 7, is deposited in the saddle support 8 of the end part 9, after which the rim 10 is slip-ped into the profile 1. Subsequently the other end of the element 6 is passed through the hole concerned of the end 10 part 14, after which the rod can be tightened by means of, for example, any clamping means, say the nut 13 shown screwed onto a screwthread end of the rod 6. After the desired pre-stress is attained in the element 6 a guard but can be moun-ted.
Finally the girder 1 with the pivot wing 12 tightened thereto can be suspended to the co operating pivot parts of the hinge 3 of the post ~. The lid 17 closes the opening of the end part 14.
From the foregoing it will be apparent that 20 mounting the gate embodying the invention can be carried out in an extremely simple manner. The further advantage obtained by the swing gate described above in that in the case of a vertical load in the direction of the arrow V (see fig. 2) g ;,^c/ C r the free end of the f-iY~er- 1 can move down to an extent such 25 that the lower end of the outermost spike touches the ground.
This only results in a slight prolongation of the clamping element 6, in which case the girder 1 can turn with respect to the pivot wing 12, since the profile shifts in place with respect to the rim 10. When the load is eliminated the clam-3Q ping element 6 will again push the girder upwards so that thegate resumes its initial position. In this ~ay not only sim-ple mounting of the gat'e but also a "flexible" gate is obtai-ned, which in the event of excess load does not cause ~e-~r~
mation of the hinge, whilst after the load the gate resumes 35 its former shape. It will furthermore be obvious that the location of the spikes 2 with respect to the girder 1 is ac-curately determined by the location of the transverse holes 7 and the clamping element 6 so that the spikes 2 remain at the correct height.

For completeness' sake it is noted that the top ends of the spikes can be interconnected by any clamping rod or wire 18.
In the case of large vertical dimensions it is furthermore possible to arrange two girders one above the other. Preferably the lower girder is located approximately at the average bumper level of vehicles so that in the case of a collision the forces exerted on the gate are absorbed by the girder 1.
Figs. 4 to 6 show a further embodiment i.e. sliding gate.
This sliding gate is also provided with a horizontal girder 21, which has a plurality a through-holes each of which can receive a spike 22. Between the spikes 22 prefabricated trellis work 22' and 22'' can be fastened at any desired place. Mounting and fastening of the spikes 22 are carried out as described above.
Each spike has a transverse hole 23 through which a clamping element 24 can be passed. The clamping element 24 is fastened at both ends, as described above, to head elements 25 and it can b~
prestressed in the same way.
It should be noted that the clamping element 24 is not arranged in the upper part of the hollow girder 21, but in the lower part thereof, whilst the hollow girder i5 furthermore provided with guide ridges 26 in which additional clamping element 27 are arranged. These clamping elements 27 are fastened, like the clamping element 24, to the head parts 25. The latter clamping elements 27 contribute to the rigidity of the girder 21, which is particularly important with large spans of, for example, 15 metres. The profile 21 of fig. 5 is provided on one side with guide means 28 formed by an upper and a lower ridge haviny a con-vex inner surface capable of receiving a roller 29. The roller 29 ~Z~3~76;~

is rotatably journalled around the axis A-A about a stub shaft 30 having a flange 31 for being fastened to a post 32 or 33 respectively. The posts 32 and 33 are spaced apart by a given distance and it will be obvious that when the gate is shifted the profile 21 can roll to and fro along the posts 32 and 33 because the rollers 29 can roll along the guide profile 28.

-5a--6- ~3~

The reciprocatory sliding movement of the gate can be obtained by means of a toothed rack-pinion system 34, the pinion 35 being driven by a motor 36 fastened to the post 32.
According to a feature of the invention the toothed rack 37 of the toothed transmission 34 is Eormed here by elements 37' of fixed length~ These elements having, for example, a length of 1 metre, are slipped into a hollow pro-~J~ i h file 38, which is open ~ downward direction until the pro-10 file 38 is filled throughout its length. A redundant part of the toothed rack element 37' can be ~w~n off so that in a simple manner the desired lengths can be obtained. Also in the case of the above-mentioned toothed rack transmassion 34 a simple mounting can be ensured because only the outermost 15 toothed rack elements 37' need be fixed in the profile 38.
This fixation may take place in any way, for example, by wel-ding. It is preferred to enclose these elements 37' between the head elements 25.
It should furthermore be noted that the side 20 of the hollow profile 21 remote from the guide profile 28 may be provided with ridges 39 on which supports or other members such as handles can be arranged.
With both types of suspended gates described above one of the ends of the girder may be provided with a 25 locking element as shown in figs. 7 and 8. The same parts of the gate are designated by the same reference numerals. The embodiment of fig. 7 is a double gate, each gate part being capable of turning about its own post. Each gate part again comprises a hollow girder 1 with spikes 2 standing vertically 30 therein and being connectable in the girder 1 by means of the clamping element 6. On the side not shown this clamping element is fastened to an anchoring member arranged near the hinge side of the gate part, whereas the other end of the clamping element 6 is anchored in a bracket 41 of a lock 35 element 42 and 42' respectively. The two lock elements are complementary i.e. one element has a recess 43 and the other element has a tongue 44 fitting in said recess.

~3~2 The lock element 42 of the right-hand gate part of fig. 7 is furthermore provided with a guide piece 45 fitting in the girder 1, in which a circular guide 46 is pro-vided for the outermost spike 2'. This spike 2' is not faste-5 ned by means of the clamping element 6, but it can be movedup and down in the guide 46. At a suitable place the spike 2' has a recess adapted to receive the bolt 47 of a locking me-chanism 48. The bolt has a length such that it can be largely passed into the guide 46. The locking mechanism 48 comprises 10 a cylinder lock 49 accessible from the outside.
The spike 2' is furthermore provided with a downwardly directed pin 50 (see fig. 7) which in the lower-most position of the spike 2' drops into a hole 51 of the lock element 42 and into a hole 52 of the tongue 44 of the 15 lock element 42'.
It will be obvious that interlocking the gate parts can take place in a simple manner by directing the gate ~; parts so that the tonyue 44 ~m~s into the recess 43, after which the spike 2' moves down so that after insertion of the 20 bolt 47 and locking by means of the cylinder lock 49 the clo-sure is established.
For completeness' sake it is noted that also the end spike of the other gate part, on the left hand in fig. 7, can be vertically slidable in the girder 1, whilst 25 the two spikes 2' and 2'', in the closing position or the open position respectively, can be deposited on the ground or in a cavity thereof so that a locking relative to the ground can be established. The invention is not limited to the embo-diments described above. For example, the shape of the spikes 30 22 may be arbitrary~ for example, curved inwardly and/or out-wardly on the top side. The spikes may have a tip and adja-cent spikes may be fastened to one another by hending.
The continuous hole in the girder 21 need not strictly be vertical, it may also be inclined so that the 35 spikes 22 are in inclined postions both in the plane normal to the girder 21 and in the direction of length thereof.
The outermost spikes 22 may be provided on the underside with ground wheels or skids. The girder 21 need have the form of a hollow profile; it may have any transverse 40 profile and it may even be solid.

Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. A gate assembly comprising the combination of an elongate girder adapted to be disposed in generally horizontal position above the ground surface and a plurality of upstanding pickets carried by said girder; supporting means for movably supporting said girder from a post to form a gate; a first member at one end of said girder; and prestressing means for placing said girder under longitudinal compression, said prestressing means including a second member at that end of said girder opposite said one end thereof and at least one tension member within said girder and anchored between said first member and said second member, and means for maintaining said tension member under longitudinal tension to compress said girder between said first member and said second member.

2. A gate assembly as defined in claim 1 wherein said girder is provided with a series of openings along its length and said pickets extend through said openings, said pickets having aligned transverse openings within said girder and said tension member passing through the openings in said pickets.

3. A gate assembly as defined in claim 1 including a girder ally vertical supporting post and hinge means for swingably attach-ing said girder to said post, said hinge means including said first member.

4. A gate assembly as defined in claim 1 or 2 including a pair of generally vertical supporting posts and means for slidably supporting said girder from said posts.

5. A gate assembly as defined in claim 1 including a second girder and a second generally vertical supporting post and second hinge means for swingably attaching said second girder to said second post for movement into end-aligned relation to the first mwnrionws girder, said second girder carrying vertically slidable picket means for latching the aligned ends of the two girders together.

6. A gate assembly comprising the combination of an elongate generally horizontal girder adapted to be moved between open and closed positions, post means supporting said girder in elevated relation to ground surface for movement of the gate assembly between its open and closed positions such that a portion of the length of the girder is unsupported and may bend downwardly due to vertically downwardly directed forces exerted thereon, a plurality of generally upstanding pickets carried by said girder and pro-jecting downwardly therefrom at least in the region of the unsupported portion of the girder to limit force-induced bending of the girder, and flexible tension means for exerting sufficient longitudinal compression in said girder as to resist said bending thereof and normally prevent said pickets from engaging the ground surface.

7. A gate assembly as defined in claim 6 wherein said tension means holds said pickets relative to said girder.

8. A gate assembly comprising an elongate girder adapted to be disposed in generally horizontal, elevated position and a plur-ality of upstanding pickets carried by said girder, support post means for supporting said girder to move between open and closed positions, and at least one flexible tension element passing longitudinally through said girder and anchored in tensioned con-diction adjacent the opposite ends of the girder to exert longitu-dinal compression on said girder.

9. A gate assembly as defined in claim 8 including a first end plate member seated against one end of the girder and a second end plate member seated against the opposite end of the girder, said flexible tension element being anchored to said first and second end plate members.

10. A gate assembly as defined in claim 9 wherein said support post means is hinged to said first end plate member so that downward bending of the girder tends to separate said first end plate member from its associated end of the girder to exert increased tension in said flexible tension element.

11. A gate assembly as defined in any one of claims 8 to 10 wherein said pickets pass through said girder and are provided with aligned openings therewithin, said flexible tension element passing through said aligned openings to connect said pickets to said girder.

12. A gate as claimed in claim 8 characterized in that the girder has a guide rail for guiding a guide member mounted on at least one post.

13. A gate as claimed in claim 12 characterized in that the guide rail forms part of the girder constructed in the form of a profile.

14. A gate as claimed in claim 13 characterized in that the girder has a gutter profile adapted to receive toothed rack parts so that the teeth of these parts point out of the profile.

15. A gate as claimed in claim 1, 6 or 8 characterized in that the girder is provided on the outer side with longitudinal ridges for accommodating auxiliary elements.