DE102021113863A1 - Manhole safety device - Google Patents

Abstract

Manhole safety device (1) for a manhole structure (100) with an access opening (101). The shaft safety device (1) comprises a frame device (3), a cover device (5) and a personal safety device (7) which has a fall protection device (8) with at least one barrier element (9). In a closed state (6), the cover device (5) forms a storage space (11) with the frame device (3), the fall protection device (8) being able to be accommodated in the storage space (11). The personal security device (7) comprises a crane unit (12) which can be received within the storage space (11).

Description

The present invention relates to a shaft safety device for at least one shaft structure with at least one entry opening, comprising at least one frame device, at least one cover device and at least one personal safety device, the personal safety device having at least one fall protection device with at least one barrier element. In a closed state, the cover device forms at least one storage space with the frame device, in which the fall protection device can be received in the storage space.

Various systems for securing manholes, such as inspection manholes or inspection manholes, have become known from the prior art. The shaft opening of such shafts is usually closed with a shaft cover so that people cannot accidentally fall into the shaft.

In order to also secure the open shaft, a railing, scaffolding or the like can be set up around the shaft, for example for maintenance work or when people are to enter a shaft. Such a scaffolding or railing can be transported to a shaft and set up if necessary.

But manhole safeguards that are permanently installed on a manhole have also become known. G 93 18 077.2, for example, discloses a manhole cover which can be permanently installed above a manhole opening. In this case, a two-part cover is disclosed which, in a closed state, can cover a folded protective railing. If the shaft is to be released, the cover is opened and the railing is folded up, which together with the opened cover provides a safety device surrounding the shaft opening.

In order to secure the maintenance personnel, a traverse or a so-called crane block can be installed on such a railing or generally on railings or scaffolding, to which cable winches or the like can be attached to secure the personnel.

Such crane trestles can often be adapted to different installation situations, since the type and structure of guardrails or scaffolding can vary greatly.

However, it is disadvantageous that the traverses or crane trestles are often very bulky as a result and that they first have to be transported to the shaft itself. This is unfavorable, especially if the shaft cannot be reached directly by vehicle. In addition, it is not possible to secure personnel with a cable winch if a crane block is inadvertently not on site and / or spontaneous entry into a shaft is necessary.

It is therefore the object of the present invention to provide an improved manhole safety device in which the proper safety of people can always be guaranteed.

This object is achieved by a shaft securing device having the features according to claim 1. Preferred developments of the invention are the subject matter of the subclaims. Further advantages and features of the present invention emerge from the general description and the description of the exemplary embodiment.

The shaft security device according to the invention for at least one shaft structure with at least one entry opening comprises at least one frame device, at least one cover device and at least one personal security device. The personal safety device has at least one fall protection device with at least one barrier element. In a closed state, the cover device forms at least one storage space with the frame device. The fall protection device can be accommodated in the storage space. The personal security device comprises at least one crane unit which can be received within the storage space.

The shaft securing device according to the invention can in particular also be arranged on several shafts and / or shaft structures. The frame device can preferably enclose several shafts and / or shaft structures. In addition, it is preferably also possible for the shaft securing device to be arranged on a shaft structure with a plurality of entry openings or to cover several entry openings of a shaft structure.

The frame device advantageously extends essentially along a plane. The frame device is preferably suitable and designed to frame or enclose or also to encompass at least one entry opening at least partially laterally, in particular along the sides of the opening. In particular, the frame device provides at least one corner section and preferably at least two corner sections on which the cover device is held at least in the closed state.

In expedient refinements, the cover device can be received on the frame unit and, in particular, can be folded away on the frame unit, in order to at least partially close the opening in a closed state, in particular from the outside to the environment.

In the closed state, the frame device and the cover device form, in particular, a storage space that is essentially closed at the top and at the sides, preferably above the shaft opening.

The shut-off element is advantageously arranged in a foldable manner on at least one frame element of the frame device. In an open state of the manhole safety device, the fall protection device in particular prevents at least some sections, in particular in connection with the erected cover device, from direct access to the entry opening of a manhole. The shut-off element also advantageously serves as a fall protection.

In the closed state, the fall protection device is preferably at least partially and in particular completely receivable in the storage space which is formed by the frame device and the cover device and can be stored in the storage space when not in use.

The crane unit is preferably adapted in shape and, in the closed state of the cover device of the shaft safety device, can be accommodated within the storage space in addition to the fall protection device.

Depending on the configuration, the cover device preferably comprises a plurality of individual covers or also cover units or a multi-part cover device. In this case, the cover device can in particular also have a ventilation and / or an extractor hood, or a ventilation opening can be arranged on the cover device. The cover device encloses the frame unit in particular rainproof or at least rain-repellent, d. H. a particularly overlapping shape or a seal prevents rainwater from being able to penetrate into the frame device and / or the shaft opening from above.

The frame device is designed to be round, curved, angular or also polygonal at least in sections. The frame device encloses the shaft opening at least in sections and / or in certain areas or is arranged next to the shaft opening or around the part of the floor surrounding the shaft opening. The frame device advantageously has a rectangular or square base area, which is preferably formed from one or more frame elements.

The shut-off elements are preferably accommodated on the frame elements. In the case of a rectangular frame device, there are in particular four frame elements. In particular, the shut-off elements are foldably received on the frame device and / or integrated into the frame device.

In the open state, the shut-off elements can preferably be folded up and in particular connected to one another by connecting elements or fastening elements. The shaft opening is in particular completely enclosed or encompassed or blocked by the shut-off elements.

In particular, an erected cover device can assume the function of at least one erected shut-off element. The shut-off elements can be fixed to one another in the open state by releasable fastenings such as screws or star screws or other fixing means, so that a stable shape is achieved, which preferably protects against falling.

At least one shut-off element can preferably comprise a door unit or also an entry unit. An included door can include a locking mechanism or latch and latch. In particular, the door is spring-loaded and self-closing.

In particular, a flexible erection unit is arranged on at least one shut-off element, with which the shut-off element can be transferred from the closed state to the open state. The erection unit is designed in particular as a cable pull. When the individual blocking elements are set up, the entry opening is advantageously covered by at least one blocking element until the opening is completely enclosed and in particular all blocking elements are folded up.

Preferably, the barrier elements can be individually folded up lying down from the frame device and at least non-positively connected to one another and in particular to the unfolded cover device to form a circumferential fall protection device that surrounds the frame device on all sides, in particular by fastenings.

The shaft securing device according to the invention has many advantages. Here is a shaft securing device according to the invention particularly suitable for permanently securing a shaft structure and can in particular be permanently mounted on the shaft structure. An essential advantage is that the crane unit can be permanently stowed and / or stored directly on site in the storage space on the shaft structure. The volume of the storage space is advantageously designed for this. As a result, all equipment and / or units essential for performing shaft work to secure the shaft opening and personal security and to safely perform shaft work on site on the shaft structure or the shaft-shaped opening can be stowed in a device. The entire manhole safety device only needs to be mounted once on or on a manhole structure or a notched opening and is then always ready for use. Advantageously, parts of the personal security device cannot be forgotten during transport to the shaft. Advantageously, a heavy and bulky crane unit does not have to be transported to the shaft structure.

In this case, depending on the design, several manholes or manhole openings can preferably be covered at once by a manhole safety device. In this way, a shaft or the shaft structure can be secured against falls and accidents and also against unwanted access and secure access to the inside of the shaft, for example for shaft construction work, is made possible.

Advantageously, the shut-off elements with the cover device in particular form a circumferential fall protection. The crane unit can be used, for example, to accommodate safety equipment, such as a cable winch unit. The connection dimensions of the crane unit are advantageously specifically adapted to the shut-off elements or the frame device and the shaft structure. This guarantees a quick and easy set-up.

The risk of skipping or forgetting individual security steps due to time and / or cost pressure is significantly reduced or is no longer available. The crane unit can also be used to load material and tools into or out of the shaft. Only the material or tool itself still has to be transported to the shaft structure. This is particularly advantageous in the case of periodically repeating maintenance and / or inspection work on manhole structures.

The crane unit preferably has at least one carrier element. The carrier element can advantageously be arranged at least partially above the opening, and in particular above the opening. The carrier element preferably extends at least in sections transversely to the shaft opening and in particular diagonally across the opening and / or a shaft axis of the opening. In particular, the carrier element extends at least in sections diagonally over the shaft opening. The carrier element preferably comprises at least one transverse beam, a traverse and / or a cantilever beam and is designed in such a way that a force support can be ensured centrally above the shaft opening.

The carrier element is particularly preferably tubular and / or profile-like, for example as a U-profile, at least in some areas. In particular, the carrier element has a tubular cross section, at least in sections. As a result, the crane unit can be made particularly rigid and light. As a result, the crane unit can also be easily handled by a single person. The crane unit advantageously has more than one carrier element.

The crane unit expediently has at least one bearing unit, which is used in particular to support the crane unit. The storage unit can in particular be designed as a foot, support, or also as a support unit, which is received on other components or elements.

In advantageous developments, the storage unit comprises at least one storage section. The bearing section advantageously has a U-shaped profile or a U-shaped cross-sectional profile, at least in some areas. The shape is particularly advantageous for receiving the storage unit. Forces in different directions can be transmitted advantageously. A U-profile can simply be attached. In addition, however, the bearing section can also have a different shape. Particularly advantageously, the bearing section has, at least in sections, a round, polygonal, polygonal or other cross-sectional shape.

In particular, the crane unit has two storage units.

The fall protection device advantageously has at least one receiving unit. The receiving unit serves primarily to receive and support the storage unit. In particular, the crane unit is supported exclusively on the receiving unit or is arranged thereon. In particular, the fall protection device has two receiving units. A receiving unit can comprise several individual components.

In an advantageous development, the receiving unit has at least one, in particular, open and advantageously tubular receiving section for receiving the crane unit. Of the The receiving section is advantageously designed to be complementary to the storage section of the storage unit. In particular, the receiving section has a rectangular cross section for advantageously receiving a U-shaped profile, which can be at least partially plugged in, pushed out and / or connected in some other way, particularly advantageously from the front or from the side. In particular, a simple height adjustment of the crane unit can also be made possible in this way.

The U-shaped profile can advantageously be received or arranged at least partially and / or in regions on the receiving section. A quick assembly and a robust connection are advantageous.

The storage unit and / or the receiving unit preferably have at least one locking unit for locking the crane unit on the fall protection device. The locking unit preferably comprises at least one star screw with which the crane unit can be screwed to the fall protection device. In addition, the locking unit can also be designed as a pin, bolt, hook and / or the like. In particular, a height of the crane unit can be adjusted by the locking unit.

In advantageous developments, the receiving unit has at least one pivot mechanism. As a result, the receiving unit can advantageously be pivoted angularly between different, in particular fixed, angular positions for transferring it to a closed state. The receiving unit can be stowed away to save space. The pivoting mechanism also advantageously enables compensation for temperature fluctuations.

The pivoting mechanism preferably comprises at least one sleeve unit. The sleeve unit is in particular received in a pivotable manner on at least one shut-off element of the fall protection device. The sleeve unit is advantageously received on a railing or also on a circumferential shaped element of the shut-off element so as to be at least partially rotatable or pivotable. In addition, several sleeve units with different pivot axes are also possible. The receiving unit can advantageously be pivoted into a space-saving closed position so that the receiving unit can be arranged in the storage space. In addition, the swivel mechanism can also comprise a hinge or a folding unit. In addition, it is also possible for the receiving unit to be present as a separate assembly which can be received on at least one shut-off element and, in particular, can be connected by at least one plug connection.

The pivot axis is advantageously aligned essentially horizontally and arranged essentially on the top of the shut-off element. In a closed state, the receiving unit can thus be pivoted about the shut-off element. That is to say, the receiving unit can be stowed and / or arranged between the railing posts of the barrier element, for example. To receive the crane unit, the receiving unit can simply be swiveled up from a fixed angular position into the second fixed angular position. In addition, an alternative orientation of the pivot axis is also possible, e.g. B. vertically and / or obliquely or diagonally.

The pivoting mechanism advantageously has at least one fixing unit. The fixing unit fixes the swivel mechanism and the receiving unit in a detachable manner in at least one variable angular position. A fixation in an open or closed angular position of the receiving unit can advantageously be achieved in this way. The fixing unit can be designed as a spring-loaded bolt and / or also as a pin, each of which engages in a hole and / or a bore. In addition, a clamping unit or a pincer unit is also conceivable.

In at least one preferred embodiment, the crane unit comprises at least two storage units. Two receptacles are advantageously formed on the fall protection device. The receiving units and the storage units are preferably arranged on opposite sides of the frame device. In this way, above all, a wide support base for the crane unit can be achieved. In addition, the crane unit can also be designed as a gallows, which has essentially the same properties.

The receiving units are preferably arranged (laterally) offset to one another and in particular to (at least one door) at least one door unit of the fall protection device, so that the carrier element preferably extends diagonally and centrally over the opening. In particular, a comfortable use of the door of the door unit can be ensured in this way. It is advantageously prevented that the crane unit interferes with the use of the door unit. The crane unit can advantageously be installed in such a way without obstructing and / or preventing access to the door. In particular, a lateral distance between the receiving units is greater than a door width of a door of a door unit. The receiving units are preferably arranged at least partially at a corner which is formed from two shut-off elements.

The crane unit is advantageously designed as a crane bracket. The crane unit preferably comprises at least one crane block. A crane block is advantageously formed with profiles arranged at right angles to one another and is therefore very stable and robust. The crane gantry is preferably made at least in sections and in particular completely from a particularly stainless steel. In addition, the crane block can preferably be welded, screwed and / or plugged in at least in certain areas. It is also possible that the crane bracket is at least partially adjustable in width and height and has appropriate adjustment elements for this purpose. The crane block can advantageously be arranged simply over at least one entry opening.

The crane unit preferably has at least one cable winch unit which is received on the carrier element. The crane unit advantageously has at least one cable winch unit which is received on the storage unit. The cable winch unit is advantageously used to secure people or to transport material or tools. The cable winch unit advantageously comprises at least one cable hook, at least one securing hook and / or at least one carabiner.

The cable winch unit is preferably arranged on the carrier element and / or the storage unit in a particularly pivotable manner by means of at least one bolt element or the like. The cable winch unit is advantageously accommodated in a rotatable manner by the bolt element on the storage unit. In particular, the cable winch unit is arranged eccentrically and / or decentrally to the shaft opening on the crane unit. The bolt elements can advantageously be screwed to the carrier element and / or the storage unit.

In at least one advantageous development, the crane unit comprises at least two cable winch units. This means that two people can be secured at the same time. It is also possible to secure a person and material or tool that can be lowered into the shaft.

The cable winch unit preferably has at least one manual crank handle. It is advantageous to raise and lower the rope by hand, it is a very robust mechanism. Alternatively, an electric drive and / or radio control can also be used.

In an advantageous development, the cable winch unit comprises at least one deflection pulley. As a result, the cable winch itself can be arranged decentrally or eccentrically over the opening. Several pulleys can also be provided for improved power transmission. The rope can be guided centrally over the shaft opening. At least one deflection roller preferably comprises at least partially polyamide.

The deflection roller is preferably arranged rotatably on the carrier element and / or the storage unit. The deflection roller is in particular arranged at least partially above the shaft opening.

In at least one advantageous development of the invention, the shaft securing device is made at least partially from a stainless steel and / or at least partially from a stainless steel. The shaft securing device is preferably made entirely from a non-rusting steel and / or a high-grade steel. Stainless steels and / or stainless steels are advantageous for use in reactive environments, for example in sewage treatment plants or in the vicinity of media containing salt water.

The personal security device preferably comprises at least one personal protective equipment and / or at least one tool unit, which can also be permanently stowed and stored in the storage space. A safety harness or a helmet or other personal safety items or also hand tools or measuring devices, which may be necessary for the shaft work, can advantageously be stowed directly on site. In this way, efficient execution of shaft construction work is advantageously supported.

In at least one advantageous development, the height of the crane unit is between 10% and 100% of a width and / or a length of the frame device. The height of the crane unit is advantageously essentially the same as the height of the fall protection device. In particular, the height of the crane unit is between 30% and 80% of the width and / or the length of the frame device. This advantageously enables the crane unit to be arranged within the storage space. The height of the crane unit is advantageously between 0.5 m and 2 m. In particular, the height of the crane unit is approximately 1.043 m (+/- 30%).

In at least one advantageous development, a depth of the crane unit is smaller than a (maximum) height of the frame device. In particular, the depth of the crane unit is less than approximately 80% of the height of the frame device and advantageously less than 60% or even 30% of the maximum height of the frame device. The depth of the crane unit is preferably between 0.01 m and 0.15 m and advantageously in particular less than 0.25 m or 0.4 m. The depth of the crane unit is particularly preferably approximately 0.041 m (+/- 30%).

In at least one advantageous development, a width of the crane unit corresponds essentially to the width and / or the length of the frame device. In particular, a width of the crane unit essentially corresponds to a width and / or a length of the fall protection device. In particular, a width of the crane unit is between 70% and 100% of the width and / or the length of the frame unit. In particular, this ensures that the crane unit can advantageously be received and stowed within the frame device. The height of the fall protection device is advantageously between 0.5 m and 1.5 m or in particular even 2 m. The height of the fall protection device is particularly advantageously approximately 1.044 m (+/- 30%).

The maximum width and / or the maximum length of the frame device particularly preferably has a value between 0.5 m and 10 m. In particular, the width and / or the length of the frame device is between 0.5 m and 5 m. Particularly preferably, the width and / or the length of the frame device is approximately 1.084 m (+/- 30%). In this case, a frame device can in particular comprise and / or frame a plurality of entry openings of one or more shafts and / or shaft structures.

In at least one advantageous development, a length and / or a width of the cover device corresponds essentially to between 10% and 130% of the length and / or the width of the frame device. The length and / or the width of the cover device advantageously corresponds to between 30% and 110% of the width and / or the length of the frame device. If only one cover unit is present, the length and the width of the cover unit essentially correspond to more than 100% of the length and the width of the frame unit and in particular approximately 110% of the length and the width of the frame device. In particular, when a plurality of cover units are provided, these are primarily smaller in length than a length of the frame unit.

The height of the frame device is particularly preferably between 0.05 m and 0.6. In particular, the height of the frame device is between 0.12 m and 0.4. A height of the frame device is particularly advantageously approximately 0.32 m (+/- 30%). Here, the cover device can in particular also include an extractor hood.

Further advantages and features of the present invention emerge from the exemplary embodiment which is explained below with reference to the accompanying figures.

• 1 eine rein schematische Seitenansicht des Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung im offenen Zustand;
• 2 eine rein schematische Seitenansicht des Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung in einem geschlossenen Zustand;
• 3 eine rein schematische Vorderansicht des Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung im offenen Zustand;
• 4 eine rein schematische Vorderansicht der Kraneinheit des Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung im offenen Zustand;
• 5 eine rein schematische Seitenansicht des Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung mit demontierter Kraneinheit und eingeschwenkter Aufnahmeeinheit;
• 6 eine rein schematisch perspektivische Ansicht der Kraneinheit des Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung;
• 7 eine rein schematisch perspektivische Ansicht der gesamten Personensicherungseinrichtung des Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung;
• 8 eine rein schematische Seitenansicht eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Schachtsicherungsvorrichtung mit zwei Kraneinheiten mit zueinander versetzt angeordneten Aufnahmeeinheiten; und
• 9 eine rein schematische Draufsicht auf das zweite Ausführungsbeispiel einer erfindungsgemäßen Schachtsicherungsvorrichtung mit versetzt zueinander angeordneten Aufnahmeeinheiten.

In the figures show:

• 1 a purely schematic side view of the embodiment of a shaft securing device according to the invention in the open state;
• 2 a purely schematic side view of the embodiment of a shaft securing device according to the invention in a closed state;
• 3 a purely schematic front view of the embodiment of a shaft securing device according to the invention in the open state;
• 4th a purely schematic front view of the crane unit of the embodiment of a shaft securing device according to the invention in the open state;
• 5 a purely schematic side view of the embodiment of a shaft securing device according to the invention with dismantled crane unit and pivoted receiving unit;
• 6th a purely schematic perspective view of the crane unit of the embodiment of a shaft securing device according to the invention;
• 7th a purely schematic perspective view of the entire personal security device of the embodiment of a shaft security device according to the invention;
• 8th a purely schematic side view of a further embodiment of a shaft securing device according to the invention with two crane units with mutually offset receiving units; and
• 9 a purely schematic plan view of the second embodiment of a shaft securing device according to the invention with receiving units arranged offset to one another.

1 shows a purely schematic representation of an embodiment of a shaft securing device according to the invention 1 in a side view in an open state 10 . The manhole safety device 1 is here over the opening 101 of a shaft structure 100 with a shaft axis 102 arranged.

The shaft structure 100 is shown in section for a better illustration. The framework 3 here comprises four frame elements 45 which form a rectangular base and are designed as profiles and the shaft opening 101 completely frame. The covering device 5 is here by a hinged hinge 46 swiveling on the Frame equipment 3 recorded and here in the open state 10 , ie unfolded, shown.

The personal security device 7th has a fall protection device 8th and a crane unit 12th on. The individual shut-off elements 9 the fall protection device 8th are also with hinged hinges in the embodiment shown 46 on the frame device 3 and can be folded in the direction of the fold 43 can be folded open and closed. The covering device 5 is in the folding direction 48 foldable.

The individual shut-off elements 9 are to be transferred to the open state 10 folded up here individually. For this purpose, a pull rope (not shown) is provided in the exemplary embodiment shown, with the individual shut-off elements 9 set up one after the other as soon as a user pulls on the pull rope. Until all shut-off elements 9 are set up, is the shaft opening 101 completely covered at all times. There is no risk of falling.

The shut-off elements 9 are here at the points of contact with each other through fastenings 14th connected to each other so that there is a stable construction for fall protection. On two opposite shut-off elements 9 is each a recording unit 19th educated. In the side view there is only one receiving unit 19th shown. When closed 6th is the acquisition unit 19th within the shut-off element 9 recorded lying down.

When closed 6th is between the covering device 5 and the frame device 3 the storage space shown 11th formed in which the fall protection device 8th and the crane unit 12th the personal security device 7th arranged and permanently stowed away.

The recording unit 19th has a swivel mechanism 23 with which the recording unit 19th from the shut-off element 9 upwards to accommodate the storage unit 16 can be pivoted, as shown here. The swivel mechanism 23 here includes a sleeve unit 24 , which on the shut-off element 9 here about the horizontal pivot axis 25th is pivotally included. For fixing in the closed or the open fixed angular position 27 is a fixation unit here 26th available. The fixation unit 26th is here by a spring-loaded bolt 26th formed, which in a bore in the shut-off element 9 engages and so the receiving unit 19th in the respective angular position 27 fixed.

The crane unit 12th is here as a crane trestle 28 educated. The crane unit 12th has a support element 15th , which is designed as a transverse beam and which is transverse to the shaft axis 102 extends and the shaft opening 101 overstretched. On the carrier element 15th are two storage units 16 arranged. The storage units 16 each have a storage section 18th . The storage section 18th has a U-shaped profile here 44 on which on the receiving portion 20th the acquisition unit 19th is recorded. The crane unit 12th can be on the receiving section 20th be attached. There is also a locking unit for locking 21 present, which here as a star screw 22nd is formed, which after attaching the crane unit 12th is screwed in by hand so that the crane unit 12th cannot slip. The crane unit indicates the depth 38 on.

2 shows a purely schematic representation of a side view of the shaft securing device according to the invention 1 when closed 6th . The covering device 5 closes the shaft opening 101 all the way up. Above the shaft opening 101 form the framework 3 and the covering device 5 the storage space 11th , in which the fall protection device 8th and the crane unit 12th are completely picked up and stowed away permanently. The covering device 5 and the frame device 3 are about a lock 47 locked. The framework 3 is by means of screws or fixings 35 at the corners with the shaft structure 100 firmly connected.

3 shows a schematic front view of the embodiment of the shaft securing device according to the invention 1 in the open state 10 . In the shut-off element shown 9 is a door 13th integrated. Through the door 13th is the shaft opening 101 accessible for carrying out shaft work. The door 13th can be swiveled in both directions and closes automatically when spring loaded.

The crane unit 12th has two storage units here 16 with storage sections 18th on. The storage units 16 are fixed to the carrier element 15th arranged. Here are the storage units 16 with the carrier element 15th welded. The fall protection device 8th accordingly has two receiving units 19th on. The crane unit 12th is as a crane trestle 28 educated. The carrier element 15th is tubular. On the crane unit 12th are two winch units 29 recorded. The winch units 29 are via bolt elements that can be screwed by hand 31 here on the storage unit 16 recorded. The cable winch of the cable winch unit 29 is decentralized or eccentric over the shaft opening 101 on the storage unit 16 arranged. The rope 34 is via a pulley 33 centrally above the shaft opening 101 guided. The winch unit 29 has a hand crank not shown in detail 32 . At the end of the rope 34 is a rope hook 30th appropriate. The rope hook 30th can be used to secure people or to transport material or tools into the shaft structure 100 can be used by yourself. Due to the double design of the cable winch unit 29 double security is provided for transport and / or personal security.

The width of the crane unit 40 is smaller than the width or length 41 the framework 3 and the covering device 5 . The height 36 the crane unit 36 essentially corresponds to the height 37 the fall protection device 8th . A depth of the crane unit 38 is here significantly smaller than a height of the frame device 3 . This allows the crane unit 12th advantageous in the frame arrangement 3 be stowed away.

In the example shown here has a height 39 the framework 3 approx. 25 cm. There is no extractor. A width or a length of the frame unit 3 is approx. 1 m.

The width and length of the covering device 42 are slightly larger than the width or length of the frame device 3 . This ensures that no rainwater enters the manhole safety device 1 and thus can penetrate into the interior of the shaft structure 2.

The crane unit 12th or the crane block 28 has a height 36 on which here are essentially the height 37 the fall protection device 8th is equivalent to. This makes it easy to stow away in the storage space 11th guaranteed.

In 4th is the crane unit 12th only shown here as a crane trestle 28 is executed. At the storage sections 18th assigns the storage unit 16 a U-shaped profile 44 as shown in the sectional view. The U-shaped profile 44 can be opened from the front on the receiving section 20th the acquisition unit 19th with a rectangular cross-section 49 be attached. Thanks to the U-shaped profile 44 forces in three directions can be directly absorbed in a form-fitting manner. This ensures a stable and robust construction. In addition, the crane unit 12th through the locking unit 21 on the recording unit 18th attached and fixed.

In 5 is a purely schematic side view of the embodiment of the shaft safety device according to the invention 1 with dismantled crane unit 12th and swiveled-in receiving unit 19th shown. The crane unit 12th is here from the receiving section 20th pulled forward. By loosening the fixing unit 26th becomes the acquisition unit 19th from the open fixed angular position 27 into the closed, fixed angular position 27 around the pivot axis 25th succeeded. The recording unit 18th is then here within the shut-off element 9 arranged.

The fastenings can then be used 14th between the shut-off elements 9 be solved. Then the individual shut-off elements 9 one after the other in the storage space 11th the framework 3 along the folding direction 43 be folded. The crane unit is on it 12th also within the storage space 11th arranged. The last step is the covering device 5 along the folding direction 48 the covering device 5 also closed. The manhole safety device 1 is then completely closed.

In 6th is a purely schematic perspective view of the crane unit 12th of the embodiment of the shaft securing device according to the invention 1 shown. The crane unit 12th is also here as a crane trestle 28 educated. The storage units 16 are with the carrier element 15th welded. The storage units 16 have a storage section 18th on, which as a U-shaped profile 44 is trained. At the front of the carrier element 15th are two pulleys 33 arranged. The pulleys 33 are enclosed by a protective plate. On the side is a hole for the locking unit 21 shown. A hand crank 32 is not shown here.

In 7th is a purely schematic perspective view of the personal security device 7th of the embodiment of the shaft securing device according to the invention 1 shown. The framework 3 and the covering device 5 are not shown. The shut-off elements 9 form with the covering device 5 together a fall protection for a shaft opening 101 .

The view of the receiving section is particularly good 20th with the rectangular cross-section 49 of the acquisition unit 19th shown. At the receiving section 20th is the U-shaped profile 44 of the storage section 18th the storage unit 16 recorded. The crane trestle 28 can through the locking unit 22nd be fixed positively.

The recording unit 18th is through the sleeve unit 24 the swivel mechanism 23 pivotable on the shut-off element 9 recorded. The fixation unit 26th enables fixation in different angular positions 27 . For transferring to the closed state 6th can use the recording units 19th be pivoted downwards so that they are in the respective shut-off element 9 are included.

8th shows a purely schematic side view of a further embodiment of a shaft securing device according to the invention 1 . Here includes the manhole safety device 1 two crane units 12th with crane trestles 28 .

The manhole safety device 1 can, for example, use two adjacent manhole openings 101 to be placed. There are two door units here 13th with one door each 13th available. Here are the recording units 19th with the receiving sections 20th for each crane unit 12th on opposite shut-off elements 9 the framework 3 arranged so that the crane unit is essentially diagonally across the shaft opening 101 extends. The area around the door 13th the door unit 13th remains free and accessible. In particular, it prevents the crane trestle 28 the crane unit 12th incorrectly installed.

9 shows a purely schematic plan view of the second embodiment of the shaft securing device according to the invention 1 . The recording units 19th are laterally offset to one another on opposite sides of the shut-off elements 9 arranged. A side gap 20a between the recording units 19th is larger than the width of a door here 13a so that the area around the door is accessible 13th can be guaranteed.

List of reference symbols

1

Manhole safety device

3

Frame equipment

5

Covering device

6th

closed state

7th

Personal security device

8th

Fall protection device

9

Shut-off element

10

open state

11

Storage space

12th

Crane unit

13th

door

13a

Door width

14th

Attachment

15th

Support element

16

Storage unit

18th

Storage section

19th

Recording unit

20th

Receiving section

20a

lateral distance 19.20

21

Locking unit

22nd

Star screw

23

Swivel mechanism

24

Sleeve unit

25th

Swivel axis

26th

Fixation unit, spring-loaded bolt

27

fixed angular position

28

Crane trestle

29

Winch unit

30th

Rope hook, hook

31

Bolt element

32

Hand crank

33

Pulley

34

rope

35

Screw / fastening

36

Height of crane unit

37

Height of fall protection unit

38

Deep crane unit

39

Height of frame structure

40

Wide crane unit

41

Width / length frame device

42

Width / length cover device

43

Folding direction shut-off element

44

U-shaped profile

45

Frame element

46

Folding hinge

47

lock

48

Cover folding direction

49

Cross section of the receiving section

100

Shaft structure

101

Entrance / shaft opening

102

Shaft axis / axis

Claims (18)

Shaft safety device (1) for at least one shaft structure (100) with at least one entry opening (101), comprising at least one frame device (3), at least one cover device (5) and at least one personal safety device (7), which has at least one fall protection device (8) with at least one shut-off element (9), the cover device (5) in a closed state (6) forming at least one storage space (11) with the frame device (3), and the fall protection device (8) in the storage space ( 11), characterized in that the personal security device (7) comprises at least one crane unit (12) which can be received within the storage space (11). Manhole safety device (1) according to the preceding claim, wherein the carrier element (15) in the installed state can be arranged at least partially over the opening (101). Manhole safety device (1) according to Claim 1 wherein the crane unit (12) has at least one carrier element (15) and wherein the carrier element (15) extends in particular at least in sections essentially transversely and in particular essentially diagonally over the opening (101). Manhole safety device (1) according to one of the preceding claims, wherein the crane unit (12) has at least one storage unit (16) and wherein the storage unit (16) in particular comprises at least one storage section (18). Manhole safety device (1) according to one of the preceding claims, wherein the fall protection device (8) has at least one receiving unit (19) for receiving and supporting the crane unit (12) and wherein the receiving unit (19) in particular at least one receiving section (20) for receiving the crane unit (12). Manhole safety device (1) according to one of the four preceding claims, wherein the crane unit (12) has at least two storage units (16) and the fall protection device (8) has at least two receiving units (19) and wherein the storage units (16) and the associated receiving units (19) are arranged in particular on opposite sides of the frame device (3) and / or the fall protection device (8). Manhole safety device (1) according to the preceding claim, wherein the storage units (16) are arranged laterally offset to at least one door (13) of at least one door unit (13) so that the carrier element (16) extends diagonally over the opening (101). Manhole safety device (1) according to one of the five preceding claims, wherein the receiving unit (19) has at least one pivot mechanism (23). Manhole safety device (1) according to one of the preceding claims, wherein the crane unit (12) is at least partially designed as a crane bracket (28) and / or comprises at least one crane bracket (28). Manhole safety device (1) according to one of the preceding claims, wherein the crane unit (12) has at least one cable winch unit (29). Manhole safety device (1) according to one of the preceding claims, which is at least partially made of a non-rusting steel and / or a stainless steel. Manhole safety device (1) according to one of the preceding claims, wherein the personal safety device (7) comprises at least one personal protective equipment and / or a tool unit, which can also be accommodated in the storage space (11). Manhole safety device (1) according to one of the preceding claims, wherein a height (39) of the frame device (3) is between 0.06 m and 0.6 m and wherein the height (39) of the frame device (3) is in particular about 0.3 m. Manhole safety device (1) according to one of the preceding claims, wherein a depth (38) of the crane unit (12) is between 0.01 m and 0.15 m and in particular is approximately 0.014 m. Manhole safety device (1) according to the preceding claim, wherein the depth (38) of the crane unit (12) is smaller than the height (39) of the frame device (3). Manhole safety device (1) according to one of the preceding claims, wherein a width (41) and / or a length (41) of the frame device (3) is between 0.5 m and 10 m and wherein the width (41) and / or the length (41) is in particular up to 20 m or more. Manhole safety device (1) according to the preceding claim, wherein a width (40) of the crane unit (12) is smaller than the width (41) of the frame device (3) and / or wherein the width (40) of the crane unit (12) in particular is substantially corresponds to the width (41) of the frame device (3). Manhole safety device (1) according to the preceding claim, wherein the height (36) of the crane unit (12) is between 10% and 100% of the width (41) and / or the length (41) of the frame device (3).

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