DE102017003470A1 - Device for raising and lowering a surface element - Google Patents

Abstract

The invention relates to a device (10) for raising and lowering a surface element (12) with a crane, in particular a formwork element of concrete formwork, which has a protruding edge (18) and / or at least one opening, with at least one support bearing (38) Receiving the surface element (12), wherein the at least one support bearing (38) is pivotably arranged on the device (10), so that when approaching the device (10) to the surface element (12) automatically the device (10) with the surface element (12) can be latched.

Description

The invention relates to a device for raising and lowering a surface element with a crane, in particular a shuttering element concrete formwork, which has a protruding edge and / or at least one opening, with at least one support bearing for receiving the surface element.

On a construction site formwork elements are regularly stored for building a concrete formwork. To erect the concrete formwork, the formwork elements must be brought by crane from a storage area to the place of use. So that the crane can take the formwork elements, previously a hook must be manually attached to each formwork element. For attaching the hook to each of the standing-mounted formwork elements, a person must create a ladder on each of the formwork elements in succession and climb the ladder. Afterwards, the person has to get off the ladder for each formwork element and remove the ladder from the formwork elements. This procedure is very time-consuming and blocks the workflow on the construction site considerably. Even more serious, however, is that the person must stand freehand on the ladder to secure the hook to the formwork element. This is therefore very risky for the health and life of this person.

The invention has the object to provide a device of the type mentioned, which improves the flow of work and safety at a construction site.

The invention achieves the stated object with a generic device in which, according to the invention, the at least one support bearing is pivotably arranged on the device, so that when the device approaches the surface element, the device can automatically be latched to the surface element. The device according to the invention can be brought to a crane hanging on the surface element. The device is slowly approximated to the surface element in the last section of the introduction. When approaching the support bearing automatically engages behind without human help a protruding edge and / or at least one opening of the example, standing upright surface element, so that the device is locked to the surface element. Once attached to the crane in this way, it can be transported to its destination on a construction site. Consequently, a construction site operator no longer has to climb up and down a ladder in order to fix the surface element to the crane.

This improves occupational safety on the construction site. Furthermore, the flow of work on the construction site can proceed more quickly than before.

So that the surface element can be picked up automatically when approaching the device, the at least one support bearing can first be pivoted by the surface element in a first direction and then pivoted by a spring element in a second, opposite to the first direction direction. During the second pivoting, the support bearing moves back into its original position and thus engages behind the protruding edge and / or an edge of the at least one opening, so that the support bearing respectively the device is locked to the surface element.

The at least one support bearing can project into a receiving area provided for receiving the area element. As the device approaches the surface element, it collides with the protruding support bearing and pivots it toward the surface element as it continues to approach.

The at least one support bearing may have a bearing surface and a sliding surface, wherein the bearing surface and the sliding surface enclose an angle of less than 90 °. Consequently, the sliding surface is oblique to the direction of movement of the device during the approach.

On a pivot axis of the at least one support bearing, a gear may be provided which can be driven by an at least partially toothed rack. If the toothed rack can be actuated with a pivot lever having a round toothed region, then the surface element set down on a base can be released from the device by actuating the pivoting lever. Upon actuation of the pivot lever this can be pivoted transversely to the longitudinal axis of the rack.

If the pivot lever is also pivotably mounted about the longitudinal axis of the rack, so it can be actuated to release the surface element of the device from different positions. Appropriately, the pivot lever may be connected to a pull rope which hangs down on the surface element and thus can be used to release the surface element.

The weight of the recorded surface element can prevent pivoting of the at least one support bearing. The weight of the surface element acting on the support bearing causes a torque which corresponds to a torque required for releasing the surface element from the device is needed, is opposite. This required for releasing the surface element torque can not be generated by a person, as this, the length of the pivot lever is too short and the weight of the pull rope serving person is too low.

In order for a crane operator to be able to approximate the device to the edge of the surface element in a targeted manner, the device can have centering elements encompassing the surface element.

The device can be connected by means of a crossbar with at least one other device. As a result, on the one hand surface elements can be lifted with a greater weight, on the other hand a stable position of the surface element hanging on the device can be ensured. The distance between the devices can be variably adjusted depending on the dimensions of the surface element and fixed with locking pins.

If a plurality of devices are interconnected by means of the traverse, it may have a plurality of pivot levers which are connected to a connecting shaft, wherein the connecting shaft is connected to the rack. The connecting shaft may have longitudinally extending teeth, which also engage in toothings of the rack. Consequently, it is sufficient to operate only one of the pivot lever to release the ground surface element from the device. This is particularly of great advantage if not all pivoting lever respectively the attached traction cables can be reached due to certain space conditions.

Fixing eyelets, which are pivotable about the longitudinal axis of the crossmember, can be mounted on the crossmember. With the eyelets, the device can be attached to a crane. Due to the pivoting of the eyelets, it is also possible to take the device lying on the ground formwork. So that a person can pivot the device for this purpose with as little force as possible, for example, in the horizontal, an operating handle with a weight can be provided on the device.

Two exemplary embodiments of a device according to the invention will be explained in more detail below with reference to the accompanying drawings.

• 1 eine Frontalansicht auf eine erste Ausführungsform der Vorrichtung und ein Schalungselement;
• 2 eine Seitenansicht auf die Vorrichtung und das Schalungselement aus 1;
• 3 eine perspektivische Ansicht auf die erste Ausführungsform der Vorrichtung ohne Schalungselement;
• 4 eine Seitenansicht auf die zur besseren Darstellung teilweise freigelegte Vorrichtung aus 3;
• 5 eine perspektivische Ansicht auf die Vorrichtung aus 4;
• 6 eine perspektivische Seitenansicht auf die Vorrichtung und das Schalungselement aus 1 in einer waagrechten Position;
• 7 eine Seitenansicht auf ein Stützlager;
• 8 einen perspektivischen Ansicht auf eine zweite Ausführungsform der Vorrichtung.

In detail show:

• 1 a front view of a first embodiment of the device and a formwork element;
• 2 a side view of the device and the formwork element 1 ;
• 3 a perspective view of the first embodiment of the device without formwork element;
• 4 a side view of the for better illustration partially exposed device 3 ;
• 5 a perspective view of the device 4 ;
• 6 a perspective side view of the device and the formwork element 1 in a horizontal position;
• 7 a side view of a support bearing;
• 8th a perspective view of a second embodiment of the device.

The 1 . 2 . 3 and 6 show two identical devices 10 and 11 for raising and lowering a surface element 12 , which in the present case is a formwork element for concrete formwork. The devices 10 and 11 and the surface element 12 can with on eyelets 14 and 15 attached chains not shown here raised and lowered by a crane, not shown.

A traverse 13 connects the two devices 10 and 11 with each other (see 1 ). At the Traverse is one with a weight 16 equipped operating handle 17 arranged. With it, the two devices can 10 and 11 be pivoted by a person such that the formwork 12 also in a horizontal position of the two devices 10 and 11 can be included (see 6 ). For this purpose are the eyelets 14 and 15 around the longitudinal axis of the traverse 13 arranged pivotally.

At the devices 10 and 11 are also centering elements 30 . 31 . 32 . 33 . 34 and 35 assembled. With their help, a crane operator can use the devices 10 and 11 when approaching the surface element 12 in the last section of the approach, slowly without any further human help, to the edge of the surface element 12 approach (see 3 ).

The devices 10 and 11 and also the eyelets 14 and 15 are along the traverse 13 displaceable. They can be fixed in position with not shown locking pins to the distance between the devices 10 and 11 and the eyelets 14 and 15 firmly set.

The centering elements 30 . 31 . 32 . 33 . 34 and 35 form reception areas 36 and 37 for receiving the surface element 12 , In the reception areas 36 and 37 stand up support camp 38 and 39 into it, on which the surface element 12 can be discontinued. The support bearings 38 and 39 have a bearing surface 70 on which the surface element can be placed, and a sliding surface 71 on. After the devices 10 and 11 with the crane far enough to the surface element 12 have been introduced, the surface element 12 while approaching the devices 10 and 11 in the recording area 36 and 37 introduced. Upon further approach of the devices 10 and 11 to the surface element 12 eventually become the support camp 38 and 39 from the surface element 12 detected. An edge 18 of the surface element 12 then slides with its edge on the support bearings 38 and 39 along the sliding surface 71 along and pivot the support bearings 38 and 39 in a first direction. As soon as the edge 18 (please refer 1 ) the support bearings 38 and 39 when approaching, the support bearings become 38 and 39 by means of a leg spring 50 (please refer 5 ) are pivoted in a second, opposite direction to the first direction, so that they assume their original position again. In this way, the support bearings engage behind 38 and 39 the edge 18 and thus lock the devices 10 and 11 automatically with the surface element 12 , The surface element 12 can then be lifted by crane.

After the surface element 12 For a reason, the support bearings can 38 and 39 with levers 51 and 52 be pivoted in the first direction, so that they are no longer the edge 18 of the surface element 12 engage behind. The of the surface element 12 dissolved devices 10 and 11 are then lifted by the crane and thereby by the surface element 12 away.

The swivel levers 51 and 52 are with a partially toothed rack 53 engaged. By actuating the swivel lever 51 and 52 becomes the rack 53 moved in the axial direction. When the pivot lever 51 and 52 be pivoted down, so the rack moves 53 up. The support bearings 38 and 39 then can the surface element 12 do not back up. During a movement of the pivot lever 51 and 52 the rack moves upwards 53 down (see 5 ). The support bearings 38 and 39 then can the surface element 12 engage behind and thus the surface element 12 with the devices 10 and 11 lock.

At the support camps 38 and 39 is a gear 72 on a pivot axis of the support bearings 38 and 39 arranged, which also with the rack 53 engaged. If the rack 53 is moved upward, so move the support bearings 38 and 39 counterclockwise. With a movement of the rack 53 down the support bearings move 38 and 39 clockwise.

The swivel levers 51 and 52 are with a warehouse 300 and 301 pivotable about the longitudinal axis of the rack 53 stored (see 3 ). Thus, the pivot lever can 51 and 52 for releasing the surface element 12 from the device 10 to pivot in a specific operating position.

The swivel levers 51 and 52 can be operated with tension cables, not shown here.

The devices 10 and 11 are with a connecting shaft 19 , which has longitudinally extending teeth, connected (see 1 and 4 ). The teeth of the connecting shaft 19 also grab the rack 53 one. Thus, it is sufficient for releasing the surface element 12 from the devices 10 and 11 only one of the swivel levers 51 and 52 to use.

8th shows a device 80 , It is different from the devices 10 and 11 in that the rack 53 through a rack 81 is replaced. To the rack 81 is a coil spring 82 arranged concentrically. The coil spring 82 is an alternative to the leg spring 50 , Between the coil spring 82 is a support plate at one end 83 and at the other end a support ring 84 arranged. The support ring 84 is stationary on the device 80 , respectively attached to its housing not shown in detail for clarity reasons, preferably by welding.

When the pivot lever 52 pressed down, so is the rack 81 moved upwards. The support bearing 39 then pivots clockwise. It can then be the surface element 12 do not back up. Will the pivot lever 52 pushed up, so the rack moves 81 down and the support bearing 39 pivots counterclockwise, making it the surface element 12 can engage. Because the coil spring 82 Preferably, a compression spring, it pushes the rack 81 down, without any actuation of the pivot lever 52 is mandatory.

She thus holds the support camp 39 automatically in its detent position in which the support bearing 39 the surface element 12 can engage.

LIST OF REFERENCE NUMBERS

10

contraption

11

contraption

12

surface element

13

traverse

14

securing eye

15

securing eye

16

Weight

17

Operating handle

18

edge

19

connecting shaft

30

centering

31

centering

32

centering

33

centering

34

centering

35

centering

36

reception area

37

reception area

38

support bearings

39

support bearings

50

Leg spring

51

pivoting lever

52

pivoting lever

53

rack

70

bearing surface

71

sliding surface

72

gear

80

contraption

81

rack

82

coil spring

83

support plate

84

support ring

300

camp

301

camp

Claims (12)

Device (10, 11, 80) for raising and lowering a surface element (12) with a crane, in particular a formwork element of a concrete formwork, which has a protruding edge (18) and / or at least one opening, with at least one support bearing (38, 39 ) for receiving the surface element (12), characterized in that the at least one support bearing (38, 39) is pivotably arranged on the device (10, 11), so that when approaching the device (10, 11, 80) to the Surface element (12), the device (10, 11, 80) automatically with the surface element (12) can be latched. Device (10, 11, 80) according to the preceding claim, characterized in that when approaching the device (10, 11) to the surface element (12), the at least one support bearing (38, 39) first through the surface element (12) in a First direction pivotable and then by a spring element (50) in a second, opposite to the first direction direction is pivotable. Device (10, 11, 80) after Claim 2 , characterized in that the at least one support bearing (38, 39) projects into a receiving area (36, 37) provided for receiving the area element (12). Device (10, 11, 80) after Claim 2 or 3 , characterized in that the at least one support bearing (38, 39) has a bearing surface (70) and a sliding surface (71), wherein the bearing surface (70) and the sliding surface (71) enclose an angle of less than 90 °. Device (10, 11, 80) according to any one of the preceding claims, characterized in that on a pivot axis of the at least one support bearing, a gear (72) is provided which can be driven with an at least partially toothed rack (53, 81). Device (10, 11, 80) after Claim 5 , characterized in that the rack (53, 81) with a toothed portion having pivot lever (51, 52) is actuated. Device (10, 11, 80) after Claim 6 , characterized in that the pivot lever (51, 52) about the longitudinal axis of the rack (53, 81) is pivotally mounted. Device (10, 11, 80) according to any one of the preceding claims, characterized in that the weight of the received surface element (12) prevents pivoting of the at least one support bearing (38, 39). Device (10, 11, 80) according to one of the preceding claims, characterized in that it comprises the surface element (12) encompassing centering elements (30, 31, 32, 33, 34, 35). Device (10, 11, 80) according to any one of the preceding claims, characterized in that it is connectable by means of a traverse (13) with at least one further device (10, 11, 80). Device (10, 11, 80) after Claim 10 , characterized in that it comprises a plurality of pivot levers (51, 52) which are connected to a connecting shaft, wherein the connecting shaft (19) with the rack (53, 81) is connected. Device (10, 11, 80) after Claim 10 or 11 , characterized in that on the crossmember (13) fixing lugs (14, 15) which are pivotable about the longitudinal axis of the crossmember (13) are mounted.

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