JP2010500488A - Closure and safety protection column - Google Patents

Abstract

  The present invention relates to a closure and safety protection post used to surround and / or close or maintain a plane, or to be fixed or movable to guide the flow of people, animals and / or traffic. This strut consists of a base body (1, 31) having at least one housing (2, 34) for housing at least one flexible closing means (7, 35). The one or more flexible closing means (7, 35) can be automatically retracted into the storage part (2, 34) by means of a strip retractor. In the present invention, the storage part (2, 34) for the closing means (7, 35) is provided inside the lower end and / or the lower end of the base body (1, 31) of the closing and protection column. It is arranged on the outer surface. The substrate (1, 31) has means for guiding one or more flexible closing means (7, 35) from the lower end of the substrate to the free end. This lowers the center of gravity of the closure and safety protection strut, which increases the stability of the strut. Moreover, it can be avoided that the wind acting surface is at a high position. The technical solution according to the invention is therefore suitable for applications in the agricultural field, in particular for fences.

Description

  The present invention relates to a closure and safety protection post used to surround and / or close or maintain a plane, or to be fixed or movable for guiding the flow of people, animals and / or traffic.

  Closure and safety posts can be used alone or in conjunction with flexible closure means such as leather strips, ropes, barrier tapes, conductive strips, etc., in which case the flexible closure means must be unwound from the drum And can be fixed to a hook or grommet provided on the column. It is also already known that a flexible carrier means, i.e., a wire carrier mounting tool around which an electric fence is wound, is electrically insulated and placed on a column and fixed thereto. The winding device for the electric fence is provided with a return spring, and this return spring automatically pulls out the drawn electric fence after removing it from the adjacent column (Patent Document 1, Patent Document 2). ). Retractable barriers have also been devised for agricultural applications. This barrier consists of a pipe-shaped storage part into which a flexible strip extending almost the entire length of the storage part is automatically drawn and can be manually pulled out again. . This barrier is detachably fixed to the column (Patent Document 3). Similarly, a pipe-shaped band housing part can be placed on a pile, and two band rolls are arranged at a distance from each other in this band body housing part. Sex barriers can be stretched to different heights. These belt rolls are also provided with a retracting mechanism (Patent Document 4). Finally, a retractable barrier for guiding a crowd that can be placed on a support is known (Patent Document 5). The disadvantage of all these automatic retractable winding devices is that they can only be used by coupling with the column, i.e. they must be fixed to the column or mounted and locked on the column. This not only leads to an increase in assembly cost, but also requires special measures to realize suitable mounting and fixing members during manufacture. In practice, the use of known self-retracting barriers is limited because these winding devices will only fit the selected configuration of the closure and security struts. Also, as a disadvantage, the strut equipped with an automatic retractable barrier has a heavy structural top, which impairs the stability of the strut. Bending or pulling forces acting on the closure and safety protection struts when pulling out the flexible closure means further load the struts. When used outdoors, these devices do not have a small working surface against the wind. If the winding devices are not well protected from dirt and weathering, the durability of these devices will be adversely affected.

  Finally, it should be pointed out that the wound winding device gives an unpleasant aesthetic impression.

  In addition, a traffic guidance mechanism in which one or a plurality of belt reels are arranged at different heights in the vertical direction in a column is known. A strip outlet is provided at the height of each strip reel (Patent Document 6, Patent Document 7, Patent Document 8). These mechanisms require very heavy struts with legs that ensure that they stand upright, and are therefore heavy and cumbersome, so they are hardly suitable for purposes other than temporary traffic guidance. In particular, it is not suitable for use in the agricultural field, for example, as a fence post. Furthermore, since the column is always subjected to a load perpendicular to the longitudinal axis of the column when the belt is pulled out, there is a risk that the column will be pulled down and fall completely or moved from the standing position. is there.

  The problem of standing stability of a pole with a self-retracting flexible closure means that in another technical solution, a hollow substrate whose free end is closed by a cap is fixed in the ground. It is solved by leaving. The flexible closing means can be wound around the base portion of the anchor column or by a unique winding means disposed in the upper region of the base (Patent Document 9). However, this type of anchor column is always connected to a fixed place, so it cannot be used flexibly.

  Storing the self-retracting flexible closure means in a portable hollow closure and safety guard has been described with reference to a rope closure system or a human closure system, for retracting the rope of this system The retraction mechanism consists of a wrapping system that is stored almost the full length of the column. A weight is used as the pull-in mechanism (Patent Document 10). Since the weight is located in the upper region of the column when the rope is pulled out, the column has a heavy head. Therefore, a leg having an appropriate width and weight is necessary for more reliable standing. For this reason, it is difficult to handle the closing / safety protection column. Also, the length of the flexible closing means is limited by the length of the struts, which limits it to use for a relatively short closing length. Therefore, it is not recommended to use these struts, for example in the field of agriculture or forestry.

  In particular, for the security of construction sites, it has been proposed to place a closed band drum, which is equipped with a return spring for automatic winding for the closed band, on the leg of the stand or on the stand itself. (Patent Document 11). When the closed band drum is placed on the stand, the above-mentioned problem of being unstable due to the heavy head of the closure and safety support column arises. In this case, a stable stand with heavy legs is usually used to obtain the required standing stability in the applications listed in this document, for example, construction site security, management area and monitoring area boundary setting, etc. Used. Placing the closure band drum on the stand leg is certainly technically effective, but requires a leg that is configured accordingly. It is virtually impossible to equip a stand with legs with a closed band drum at an acceptable economic cost. In many applications, such as applications in the agricultural or forestry field, the struts cannot be provided with legs that are suitable for receiving relatively large closure band drums. Therefore, the use of such technical solutions is very limited.

German utility model No. 201008560 specification German Patent Application Publication No. 102222560 European Patent Translation Publication No. 69606055 JP 2000-320193 A US Pat. No. 4,844,420 US Patent Application Publication No. 2005/0017115 US Patent Application Publication No. 2005/0220537 French Patent Application Publication No. 2433090 French Patent Application Publication No. 2817885 British Patent No. 2376247 German Patent Application Publication No. 3524356

  On the other hand, the closure and safety protection support column according to the present invention having the features of claim 1 has a storage unit including one or a plurality of flexible closing means including a winding and feeding device. It has the advantage that it is arranged inside the lower end and / or on the lower end face of the base body of the closure and safety protection column. Placing components in this area of the closure and safety protection strut lowers the center of gravity of the strut, thereby increasing the standing stability of the strut. Moreover, it can be avoided that the wind acting surface is at a high position. Therefore, this technical solution according to the present invention is suitable for applications in the agricultural field, in particular for fences, and by placing one or more storage parts in a low position according to the present invention, Stability is improved. In addition, this solution is advantageous in that it is flexible to a very wide variety of requirements regarding the fence, in particular for quick assembly and disassembly, excellent handling and portability. The conventional fence pile can be additionally equipped with a storage section equipped with a suitable fixing means, for example, by a simple detent, and at that time, it is not necessary to change the fence pile.

  It is also advantageous if the flexible closing means can be pulled out of the storage part arranged just above the ground surface, so that no bending load is applied to the already positioned struts. When bending occurs, displacement may occur, or wobbling may occur if the column has already been inserted into the ground. If the storage unit is located as low as possible, even if it is pulled out perpendicular to the axis of the column, it will cause the column to fall or unintentionally displace, or the column inserted into the ground will wobble Bending moments that are so great as to cause

  In an advantageous aspect of the invention, for one or more flexible closure means, one or more storages are arranged on the outer surface of the substrate, and a plurality of the closures for flexible closure means are provided. Accommodates the band retractor. In other words, the belt body retracting portions are arranged in a compact housing so as to face each other, side by side, or vertically. This aspect is envisaged, inter alia, for closing and security posts in which the closing means are extended in different heights and / or directions. However, it is also conceivable to provide one storage part for each band drawing-in part and to fix this storage part individually to the lower end of the base. Since this aspect is particularly well suited as a module system, it can be used more flexibly than the previous aspect.

  In another advantageous aspect of the invention, a housing for one or more flexible closure means including winding and unwinding devices is detachably coupled to the base body, so that it can be closed and secured. A high degree of flexibility is obtained when retrofitting the protective struts, and the above-described module system can be used more effectively. The winding and unwinding device can be easily removed from the substrate, for example for replacement or repair.

  In another advantageous embodiment of the invention, the substrate is configured as a solid rod. In this case, one or more flexible closing means are guided on the outer surface of the substrate. Such a closure and safety guard is robust and simple in construction and can therefore also be produced economically advantageously.

  According to an advantageous embodiment of the present invention, the means for guiding the flexible closing means or means to the base further comprises hooks, grommets or the like, adjacent to them. A flexible closing means of the strut can be hung.

  In another advantageous embodiment of the invention, the storage part is provided with coupling means, whereby at least one additional storage part including a winding and feeding device can be fixed to the storage part. . As mentioned above, this allows the closing means to be pulled out of the substrate in various directions and / or different heights. However, in the case of this aspect, only one storage portion needs to be fixed to the base.

  According to another advantageous embodiment of the invention, the base body is constructed in the form of a rod and is provided with at least one pointed end at its lower end, which is pushed into the soft ground, thereby closing and Improve the standing stability of the safety protection column. Such a closure / safety protection post can also be driven into the ground with an appropriate length of tip. Closure and safety protection struts having such equipment can be used particularly well in the fields of agriculture and forestry.

  In another advantageous aspect of the present invention, at least three storage portions each having a belt pull-in roll are fixed to the base body from the outside, and the lower surface of the storage portion is positioned on a horizontal plane. . Accordingly, the lower surface of the storage unit can be used as a bottom surface for the closing / safety protection column. At that time, the three storage portions are arranged at an angle of 120 ° with respect to each other about the base.

  In another advantageous aspect of the present invention, the closure and safety strut base is provided with a tread so that the base can be anchored to the ground without the use of tools and thus without damage.

  In one advantageous aspect of the invention, the substrate is configured to be hollow and has one or more outlets through which one or more flexible closing means are guided to the outside. . This has the advantage that when the closure or safety part is not used, the closure means is located inside the closure and safety column. This is advantageous from the aesthetic point of view and from the point of view of safety technology when using this closure and safety guard post in areas involving human traffic and / or vehicle traffic. In addition, the flexible closing means does not get in the way when transporting or storing the support column, and it is possible to avoid entanglement with each other as much as possible.

  In order to facilitate withdrawal and retraction, it is useful to guide the flexible closing means in a channel each in the substrate. The channel reaches the respective outlet of the flexible closing means. Thereby, it can be avoided that the plurality of closing means are entangled with each other. This is particularly advantageous when there is only one strip retracting roll for the closure means.

  In another advantageous aspect of the invention, a guide mechanism is provided at each outlet for the flexible closure means to exit the base of the closure and security column. This allows the flexible closing means to be pulled in and out more easily, and the closing means is handled with care.

  In another advantageous embodiment of the invention, the outlet is formed by a long vertical slit in the substrate, which is provided with a respective guide mechanism whose height can be adjusted. The slit is adjusted to the desired height of the closing means and is locked to the substrate in this position. At that time, the closing means can be pulled out from below or above the guide mechanism of the base body according to the equipment of the closing and safety protection column. If the closing means are guided in separate channels within the substrate, each of these channels reaches the highest exit point of the closing means. In that case, if the guide mechanism is set lower, the closing means must be pulled through the underside of the guide mechanism. However, it is also possible for the guide mechanism to have a slit for guiding the closing means. In this case, the equipment of the closure and safety protection column does not play a role related to this.

  In another advantageous embodiment of the invention, the dirt wiper is provided at the outlet or outlets. The dirt wiper is used to clean and smooth the closing means during automatic retraction. In addition, the advantage of a dirty wiper is that it protects the outlet from ingressing moisture and intruding rough contaminants. Of course, it is also possible to combine this function with guidance of the closing means by the guide mechanism. In this case, only one device is required, which takes on all these roles: guidance, cleaning and smoothing of the closing means and protection from invading contaminants.

  Typically, closure and safety posts for outdoor use are provided with means or hooks and / or grommets for hooking one or more flexible closure means. In a particularly advantageous manner in this regard, the hook and / or grommet is arranged on the substrate in a height-adjustable manner. They can therefore also be adjusted precisely to the height set for the closing means, without any significant cost. Advantageously, the hooks and / or grommets are installed or can be installed on all three sides of the substrate without an opening for the closing means.

  In the case of a flexible conductive closing means, a so-called conductive band, for example used to surround a pasture, in a particularly advantageous manner of this invention, a hook arranged on a substrate is used. The stop means can be connected to one or more flexible closure means by being electrically connected within the substrate. This eliminates the need for manual contact between the conductive band that reaches the column and the conductive band that leaves the column. In order to improve handling, the conductive strip can have an insulated gripping member at its retractable end.

  In another advantageous aspect of the invention, a power source is housed in the closure and safety column and supplies power to the conductive strip or to other electrical loads located in the column or on the column surface. . Such an electrical load may be, for example, a signal lamp or other safety technology mechanism.

  The following advantageous aspects of the present invention relate to one or more strip retractor rolls disposed within the legs of the closure and safety column. In order to protect the automatic band pull-in mechanism, the band pull-in roll can be provided with an overload prevention device. As an overload prevention device, it is possible to use three elastic members acting on the flexible closing means, radially outward from the winding axis, which are already fully closed. Absorbs the pulling force that is still sustained when pulled out. The elastic member can be constituted by a spring-loaded sliding member or roll of closing means, which slide member or roll pushes the final position of the closing means radially away from the winding axis. The spring force is directed in the opposite direction to the tensile load acting from the outside, so that only the compression of the spring first occurs. In addition, by arranging the springs so that the spring axis does not intersect the winding axis, the risk of bending the sliding member is reduced. Finally, the individual elastic members can have different spring constants, so that the elastic members act one after the other and more clearly convey that the end of the closing means has been reached.

  Other advantages and advantageous aspects of the invention will become apparent from the following description of embodiments, drawings and claims.

  One embodiment of the invention is illustrated in the drawing and will be described in detail below.

2 shows a cross-section of a closure and safety protection strut according to the present invention, which is hollow. It is a 2nd front view of the said closure and safety protection support | pillar. Fig. 5 shows a closure and safety guard post with a bottom plate. It is a 2nd front view of this closure and safety protection support | pillar. A belt pull-in roll is shown. The mechanism of the band pull-in roll is shown. Fig. 2 shows a solid and constructed closure and safety protection post according to the present invention. Figure 7 shows a storage for a flexible closure means. Four combined storages are shown.

  As can be seen from FIGS. 1 and 2, the closing / safety protection column according to the present invention comprises a pipe-shaped column housing 1, and the column housing has a lower end fixedly coupled to the roll housing 2. And the upper end is covered with the head 3 provided with the collar. The roll housing 2 is mounted on a tread surface 4, and a pointed end portion 5 is projected from the tread surface into an extended portion of the axis of the column housing 1. This driving point can be driven into soft ground. The roll housing 2 is wide in the lateral direction with respect to the tread surface 4 so as to accommodate two automatic belt pull-in rolls 6 whose axes are arranged side by side. From each band pull-in roll 6, a flexible closed band 7 comes out, and this closed band is guided inside a single band guide channel 8 inside the column housing 1. The band guide channels 8 reach the upper edges of the elongated outlets 9 and 10 that are arranged vertically one above the other and that are opposed to each other and are not provided in the column housing 1. In this case, the upper outlet 9 starts just below the head 3 and ends above the lower outlet 10, and the lower outlet starts from approximately the center of the column housing 1 and has the same length as the upper outlet 9. Have As an advantage of arranging the outlets 9 and 10 as a pair in the column housing 1, it is possible to selectively guide the flexible closing band 7 out of the column housing 1 in the right direction or the left direction. There is. In this example, a dirt wiper 11 with an adjustable height is disposed at the outlet 9 or 10 from which the flexible closing band is led out, and the opposite outlet 9 or 10 is electrically conductive. Similarly, the latching grommet 12 whose height can be adjusted is arranged. Depending on the desired height of the flexible closure band 7, the dirt wiper 11 and the locking grommet 12 are locked to the column housing 1. In this example, an electrically conductive closed band is used, and therefore, an insulating grip member 13 is provided at the free end of the closed band, and the grip member is further provided with the following closure / safety protection strut. A hook 14 for hanging on the stop grommet 12 is provided. The grip member 13 and / or the hook 14 are dimensioned so that they do not pass through the outlet 9 or 10, and therefore the flexible closure band 7 cannot be completely drawn into the strut housing 1.

  3 and 4 show a closure and safety guard post with only one strip retractor roll 6, which can be reliably placed on any sufficiently hard ground. All members previously inherited from the closure and safety column shown in FIGS. 1 and 2 have been given the same reference numerals. In the case of this closure and safety protection column, the column housing 1 rests on a sturdy bottom plate 15 into which a replaceable leg, in this example a replaceable bottom point 16 can be screwed. it can. Also in this case, the bottom plate 15 is provided with a tread surface 17 above the bottom point 16 in order to moor it more easily in the ground. In addition, the closure / safety protection column is equipped with LED boundaries and warning lamps 18 and with grips 19 for easier handling. Such a closure and safety protection column is mainly used in the field of traffic guidance and traffic safety.

  In the following, the structure and function of the belt pull-in roll 6 equipped with a feeding safety device used in the closing and safety protection column according to the present invention will be described with reference to FIGS. 5 and 6. The band pull-in roll is pivotally supported in a housing 20 to which the band guide channel 8 is connected, and includes a three-blade side guide 22 pivotally supported on a shaft 21. Each vane of the side guide 22 is provided with a radially elongated notch 23 for receiving the compression spring 24 and one end of each yoke 25. At this time, as can be seen from FIG. 6, the longitudinal axis of the notch 23 is arranged slightly inclined with respect to the movement of the feeding, so that the longitudinal axis does not intersect the axis 21. Arranging the notches 23 in this manner is also advantageous for converting the tension of the stretched flexible closure band 7 into a compressive force, thereby allowing the The friction at the end of the yoke 25 is minimized. The compression spring 24 pushes the yoke 25 to the outermost position with respect to the shaft 21 so that the outer edge of the yoke forms the largest possible diameter of the winding cylinder, around the winding cylinder. A flexible closure band 7 fixed to 21 is wound. As soon as an external force acts on the yoke 25, the yoke moves in the direction of the shaft 21 over a short distance predetermined by the elongated notch 23 against the force of the compression spring 24. Such force acts on the yoke 25 when the flexible closing band 7 is drawn out. At this time, the compression spring 24 acting as a feeding relaxation portion has a resistance that increases stepwise by compression of the compression spring 24 against the person pulling out the flexible closing band 7 from the closing / safety protection column. To inform the end of the flexible closure band 7. By doing so, it is possible to avoid tearing the flexible closed band 7 from the band pull-in roll.

  FIG. 7 shows another embodiment of the closing and safety column according to the present invention, which comprises a base body 31 with a lower end that is driven into a pointed end 32. The base 31 is provided with a tread surface 33 approximately above the ground level indicated by a broken line above the driving point 32, so that the base 31 can be stepped into the ground with a foot. Above the tread 33 is a storage 34 for the winding and unwinding device, from which a flexible closing band 35 is drawn out. The flexible closing band 35 is guided at the upper end of the base 31 by a guide grommet 36 that can be fixed to the base, and a grip member 37 and a hooking grommet 38 are provided at the outer end of the closing band. . In this example, the guide grommet 36 is formed in a spiral spring shape, and a hook 39 is provided at the opposite end thereof. The hook can be hooked with, for example, one or more flexible closure bands 35 or the like coming from adjacent struts. Due to the spiral spring-like configuration of the guide grommet 36, the closing band 35 can be quickly and reliably fixed to the base 31 without passing through the guide grommet 36, and the closing band can be quickly introduced. It becomes possible. Further, by combining the guide grommet 36 and the hook 39 in the shape of the spiral spring described above, a tensile force acts on the guide grommet 36 when the closing band 35 is stretched or hooked, The advantage that the guide grommet is more firmly engaged with the base 31 is obtained.

  The housing for the flexible closing means shown in FIG. 8 comprises a housing 40 having a through hole 41 for the base 31 and a slit 42 as an outlet of the closing band 35. On both sides of the hole 41, the ridge line of the housing 40 is chamfered at an angle of 45 °. A dovetail groove 43 is provided in one chamfered portion, and a dovetail 44 is provided in the other chamfered portion. Thus, the housing 40 can be combined with three additional housings 40 ', 40 "and 40"', each with a matching mating member. FIG. 9 shows a state in which the four housings 40 to 40 '' 'are coupled. In this case, it is also possible to pass the substrate 31 through the central gap 45 thus generated.

  All features described in the specification, the following claims and the drawings may be essential to the present invention, either alone or in any combination with each other.

DESCRIPTION OF SYMBOLS 1 Substrate 2 Roll housing 3 Head 4 Tread surface 5 Driving point 6 Strip pulling roll 7 Flexible closing strip 8 Strip guide channel 9 Upper outlet 10 Lower outlet 11 Dirt wiper 12 Hook grommet 13 Grip member 14 Hook 15 Leg plate 16 Bottom point 17 Tread 18 LED boundary and warning lamp 19 Grip 20 Housing 21 Shaft 22 Side guide 23 Elongated notch 24 Compression spring 25 Yoke 31 Base 32 Driving point 33 Tread 34 Storage part 35 Flexible portion Closure band 36 Guide grommet 37 Grip member 38 Hook grommet 39 Hook 40 Housing 41 Hole 42 Slit 43 Dovetail groove 44 Dovetail 45 Gap

Claims (21)

A base body (1,) having means for fixing itself to the ground or in the ground and at least one storage (2, 34) for receiving at least one flexible closing means (7, 35) 31) a closure and safety protection strut, wherein the one or more flexible closure means (7, 35) are automatically brought into the storage part (2, 34) by means of a strip retractor In a closure and safety protection strut that is retractable and can be withdrawn from the housing against the force of a spring and has means for latching at the retractable end of the closure means,
The one or more storage portions (2, 34) for the one or more flexible closing means (7, 35) are the lower ends of the base body (1, 31) of the closing and safety protection column. Arranged on the inside and / or the lower outer surface, the base (1, 31) for guiding the one or more flexible closing means (7, 35) from the lower end to the free end of the base Closing and safety protection strut characterized by comprising means.   The one or more storage portions (2, 34) for the one or more flexible closing means (7, 35) are arranged on the outer surface (1, 31) of the base body, 2. A closure and safety protection column according to claim 1, characterized in that it houses a plurality of strip retractors (6) for flexible closure means (7, 35).   The one or more storage parts (2, 34) for the one or more flexible closing means (7, 35) are arranged on the outer surface (1, 31) of the base body, Closure and safety protection according to claim 1, characterized in that one storage part (2, 34) accommodates one band retractor for one flexible closing means (7, 35). Prop.   The one or more storage parts (2, 34) for the one or more flexible closing means (7, 35) are separably coupled to the base (1, 31). The closure and safety protection column according to any one of claims 1 to 3.   Closing and safety protection column according to any one of claims 1 to 4, characterized in that the one or more flexible closing means (7, 35) are guided on the outer surface of the substrate.   The means for guiding the one or more flexible closing means (7, 35) is provided with a hook (39), a grommet (12, 36) or the like. The closing and safety protection column according to claim 1 or 5.   The storage part (34, 40, 40 ′, 40 ″, 40 ′ ″) is provided with coupling means (43, 44) for storing at least one additional storage part. The closure and safety protection column according to claim 1.   The closure and safety protection column according to any one of claims 1 to 7, wherein the base (31) is formed in a rod shape and has a pointed portion (32) at a lower end thereof.   5. The lower surface of at least three storage portions (2, 34) arranged on the outer surface of the base body (1, 31) forms a bottom surface for the closure and safety protection column. The closure and safety protection column according to any one of 7 and 7.   Closing and safety protection column according to any one of the preceding claims, characterized in that a tread (4, 17) is provided at the lower end of the base (1, 31).   The substrate (1) is hollow and has one or more outlets (9, 10), through which the one or more flexible closing means (7) are visible from the inside. The closing / safety protection column according to any one of claims 1 to 4, 7 and 9, characterized by being guided outward.   Said one or more flexible closing means (7) are guided in said one or more channels (8) in said base (1), said channels being said base (1). 12. Closure and safety guard post according to claim 11, characterized in that it reaches the respective outlet (9, 10) of the one or more flexible closure means (7).   Closure and safety protection according to claim 11 or 12, characterized in that each outlet (9, 10) for said one or more flexible closure means (7) is provided with a guide mechanism. Prop.   The one or more outlets (9, 10) are formed by slits perpendicular to the base body (1), and each of the slits is provided with one height-adjustable guide mechanism. The closing and safety protection column according to any one of claims 11 to 13.   The base (1, 31) is provided with means (12, 39) for adjusting the height of the single or a plurality of flexible closing means (7). The closure and safety protection column according to any one of claims 1 to 14.     16. The closure and safety protection column according to claim 1, wherein a power source is stored in the closure and safety protection column.   An overload prevention device is provided in said one or more strip retractors (6) for said one or more flexible closure means (7, 35). The closure and safety protection column according to any one of 1 to 16.   The overload prevention device comprises three elastic members (24) acting on the flexible closing means (7, 35) radially outward from the winding shaft (21). The closing / safety protection column according to claim 17.   19. A closure and safety protection strut according to claim 18, wherein the elastic member (24) comprises a spring-loaded roll.   20. A closure and safety protection column according to claim 19, characterized in that the axis of the spring stroke is arranged inclined with respect to the winding axis (21), i.e. does not intersect the winding axis.   21. Closure and safety protection strut according to any one of claims 18 to 20, characterized in that the elastic member (24) has a different spring constant.

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