ES2425550T3 - Platform lift for a water vehicle and water vehicle with a platform lift - Google Patents

Abstract

Platform lift (1) for a water vehicle (6) with a helmet (60) and an accessible cover (61), where the platform lift (1) is provided in particular for placement in a stern area (62) of the hull (60), where the platform lift (1) for lifting and lowering a platform (10) has a lifting device (2) with power drive (4) and presents a displacement device for a longitudinal displacement coupled in a manner forced with the action of raising and lowering the platform (10), wherein the lifting device (2) comprises lifting arms (21, 22) that rotate on one side in at least one basic body (20 ) that can be placed outside the hull (60) of the aquatic vehicle (6) and that they rotate on the other hand in at least one articulation head (12) that is connected with at least one platform support (11) that supports longitu The platform (10) can be displaced and where the displacement device comprises at least one coupling bar (15) that can be connected on one side with a part of the lifting device (2) and on the other hand with the platform (10), characterized in that the displacement device is integrated in the lifting device (2).

Description

Platform lift for a water vehicle and water vehicle with a platform lift

The present invention relates to a platform lift for a water vehicle with a helmet and an accessible cover, where the platform lift is provided in particular for placement in a stern area of the helmet, where the platform lift for lifting and lowering a platform presents a lifting device with a power drive and presents a displacement device for longitudinal displacement forcedly coupled with the action of raising and lowering the platform, wherein the lifting device comprises lifting arms which are rotatably supported on one side in the form of a parallelogram in at least one basic body that can be placed in the hull of the water vehicle and on the other hand are rotatably supported on at least one articulation head that is connected with at least one platform support that supports the platform in a longitudinally displaced manner able and where the displacement device comprises at least one coupling bar that on one side is connected with a part of the lifting device and on the other hand can be connected with the platform. In addition, the invention relates to a water vehicle with a platform lift.

Water vehicles such as sailing or motor yachts are often equipped with a platform lift, so that at an anchor location, for example, they can go down to the water and re-raise a lifeboat that is transported on the platform. This platform can, for example, also be used as a bed surface or as a bathing platform.

A platform lift of the type mentioned above is known from EP 2 065 300 A1. With this platform lift, the coupling bar is arranged laterally next to the lifting arms of the lifting device, so a relatively large installation space is disadvantageously required. In addition, for the coupling bar located in the open there is a greater risk of damage through external effects, which can lead to a malfunction of the platform lift. It is also considered as a disadvantage in this known platform elevator that the platform in the last part of the descent movement is already dragged back towards the water vehicle, thereby reducing or even completely canceling the desired effect with the displacement .

Therefore, for the present invention, the objective is to provide a platform lift of the type mentioned initially that avoids the aforementioned disadvantages and that in particular allows a more compact construction mode and avoids the danger of damage to the bar of coupling and thus guarantee reliable and effective operation in regard to the displacement of the platform lift.

This objective is achieved in accordance with the invention with a platform lift of the type mentioned initially, characterized in that the displacement device is integrated in the lifting device.

With the invention it is advantageously achieved that for the displacement device an additional structural space is not required over the entire width of the lifting device. This constitutes an essential advantage especially when other components such as for example a Z-drive of the water vehicle, a rowing drive and / or stabilizing fins and, are arranged in the water vehicle to be equipped with the platform lift in the additional mounting area. Your drives. In the platform elevator according to the invention it is also convenient that through the integration of the displacement device into the lifting device, the parts of the displacement device, in particular the coupling bar, are mostly housed in covered and therefore protected manner. The parts of the lifting device, due to the high forces to be applied, must be carried out in a robust manner anyway, so that they can easily perform the protection function for the displacement device that is performed here in a lighter way due to the smaller forces to be transmitted. Through this, the displacement device is effectively prevented from being damaged by external influences. Furthermore, with this geometric arrangement of the displacement device, in particular, of its coupling bar, the greater displacement of the platform can be achieved with advantage away from the water vehicle in the lowest descent position of the platform elevator. In this way a free space of the largest possible size is guaranteed for installations and functional elements that are located in the area of the platform lift in the water vehicle, in particular below the waterline.

In another embodiment it is provided that the lifting arms and / or the platform support and / or the articulation head of the lifting device are made in the form of U-shaped or rectangular profiles or parallel double struts between them and that the coupling bar of the displacement device is arranged in hollow or intermediate spaces and / or grooves of the lifting arms and / or of the platform support and / or of the articulation head. Therefore, the coupling bar, depending on the configuration of the displacement device and the current position of the platform elevator, is advantageously placed securely within a part or several parts of the lifting device.

The coupling bar has a fixed length in the simplest case. However, as an alternative it can also be done in a modifiable and adjustable way in order to adapt it to different constellations

geometric The same coupling bar can then be used that has to be adjusted adapted only in terms of length.

In addition, the invention proposes that the displacement device can be operated with a drive rod that on the one hand is torsionally coupled with the lifting device and on the other hand is articulated with the end away from the platform of the coupling bar and which is arranged in hollow or intermediate spaces and / or grooves of the lifting arms and / or of the platform support and / or of the articulation head. With the drive rod, the coupling rod can be operated in a desired transmission ratio, whereby the longitudinal displacement of the platform that necessarily depends on the angle of rotation of the lifting arms can be adjusted to a desired or required level. In this regard, the drive rod, like the coupling rod, is arranged to save space and in a protected manner within the parts of the lifting device.

In a preferred embodiment, the drive rod is made rectilinearly or bent in the form of a sickle and at or near one end of the side of the articulation head of one of the lifting arms is torsionally connected with this latest. The drive rod requires particularly little space here and its shape can be adapted to the pre-established external structural space conditions.

A convenient transmission relationship can be achieved between the rotational movement of the lifting arms and the longitudinal displacement of the platform when, as is additionally preferably provided, the end of the connecting rod connected articulated with the coupling bar is located located on a line that extends substantially at right angles to the longitudinal axis of the lifting arm that supports the drive rod through its end on the side of the articulation head.

An additional measure to achieve a reduced structural size, in particular of a narrow construction form, is that the lifting arms seen in their horizontal transverse direction are preferably made with a variable width and that the wider lifting arm is open at least partially on its side facing the narrowest lifting arm with respect to its receptacle. Through this it is achieved that the lifting arms in their turning movement to raise and lower the platform can advantageously move at least partially within each other.

The platform of a platform elevator according to the invention, in particular, depending on the size of a corresponding water vehicle, can be carried out in different sizes and with different load capacities. With smaller platforms and a correspondingly smaller load capacity, the lifting device has a single parallelogram arrangement and correspondingly a single articulation head and a single platform support as well as a single coupling bar. The mentioned elements of the lifting device have to be present here only once, which keeps the production and assembly cost low.

For larger platforms and correspondingly with greater load capacity, the lifting device conveniently presents several arrangements of parallelogram-shaped lifting arms located next to each other and correspondingly several articulation heads located next to each other. of another and several platform supports located next to each other as well as several coupling bars. The specific amount depends on the charges that will be presented. The parts may be identical with respect to each other, which also contributes here to favorable production.

In general, the platform lift is arranged at the stern of a water vehicle, where, however, other aforementioned functional elements of the water vehicle are already frequently arranged. In such cases, the basic body in the state of additional mounting on its side facing the hull of the water vehicle may have one or more openings or cavities for clearing the protruding parts arranged in the water vehicle, such as paddle drive or drive with stabilizing fins.

In order to achieve a robust and load-bearing construction with high safety for platform lift users, the platform support preferably has a first support part fixedly connected in a longitudinal direction with the articulation head and a second carrier part connected with the latter in a longitudinally movable manner, wherein the second carrier part forms or supports the platform.

In order to be able to easily use identical platform supports for platforms made identically, it is proposed that consoles and fastening with fasteners for the platform are arranged from the upper side in the longitudinally movable carrier part. The platform support due to its necessary load capacity is conveniently formed of metal, such as steel or aluminum, while the platform can be formed here of another material, particularly lighter, such as wood or plastic.

For safe access of the platform it is essential that the latter is in a horizontal orientation when the platform lift is mounted on the water vehicle. In order to allow adjustment here when necessary, when the platform is mounted on the water vehicle, a diagonal support is preferably arranged between a lower area of the articulation head and an external area of the platform support

preferably adjustable by means of a threaded spindle.

For safe driving of the water vehicle, it must be ensured that the platform lift platform does not unintentionally lower while driving. For this purpose, the invention proposes that in the basic body a security hook is arranged in its approximately horizontal basic position, rotatably rotatable by means of a power drive, which in an elevated position of the platform with a safety bolt in a part of the Lifting device can be placed in a detachable safety coupling that fixes it in the latter's position. In this regard, the safety position of the safety hook is conveniently its lowering position that the latter adopts in the absence of an operating force of its power drive automatically through the action of the gravity force or an action of a spring force. In this way a particularly high security is obtained, because the safety hook in any case falls into its safety position.

An additional relatively sensitive element of the platform lift is its power drive. For protection it is preferably provided that the basic body is configured in the form of a housing, preferably with a cover cover assigned to the power drive and that a piston and cylinder unit is arranged as a power drive of the lifting device in the basic body which is articulated on one side with the basic body and on the other hand with one of the lifting arms. In addition, the power drive is housed securely and is protected from damage by external influences. In this regard, the additional cover cover optionally present which is preferably composed of metal, can additionally protect the piston and cylinder unit and the corresponding hydraulic elements from damage by external influences. In addition, this avoids injury risks for people who use the platform lift in bathroom operation.

Finally, the invention also relates to a water vehicle with a helmet with an accessible cover, wherein the water vehicle according to the invention is characterized in that it has a platform lift according to one of claims 1 to 14.

An embodiment of the platform elevator according to the invention will be explained below by means of a drawing. In the drawing figures:

Figure 1

shows a platform lift in a stern of a water vehicle, with platform raised, in side view,

Figure 2

shows the platform lift of figure 1, with platform lowered, in side view,

Figure 3

shows the platform lift of figure 1, with platform raised, in a view on the stern of the water vehicle,

Figure 4

shows a platform lift lifting device in raised position, in a perspective view inclined from the upper rear,

Figure 5

shows the lifting device of figure 4, in raised position, in a perspective view inclined from the front,

Figure 6

shows the lifting device of figure 4, in the down position, in a perspective view inclined from the upper rear, in

Figure 7

shows the lifting device of figure 6, in the down position, in a perspective view inclined from the front, in

Figure 8

shows the lifting device of figure 4, in raised position, in a side view,

Figure 9

shows the lifting device of figure 8, in raised position, in a side view, with hidden parts represented by dotted lines,

Figure 10

shows the lifting device of figure 9, in raised position, in a vertical section according to the line C-C of figure 11,

Figure 11

shows the lifting device of figure 10, in raised position, in a top view,

Figure 12

shows the lifting device of figure 4, in the down position, in a side view,

Figure 13

shows the lifting device of figure 12, in a downward position, in a side view, with hidden parts represented by dotted lines,

Figure 14

shows the lifting device of figure 12, in the down position, in a vertical section according to the line E-E of figure 15 and

Figure 15 shows the lifting device of Figure 14, in the down position, in a top view.

In the different figures of the drawing, the equal parts are always provided with the same reference numbers, so it is not necessary to describe again for each figure in the drawing all the reference numbers that appear therein.

Figure 1 of the drawing shows a side view of a platform lift 1 that is placed at the stern 62 of the hull 60 of a water vehicle 6, such as a motor yacht, with a platform 10 that is here in its raised position . In its raised position according to Figure 1, the surface of the platform 10 forms with the cover 61 of the water vehicle 6 a substantially horizontal continuous surface.

The platform 10 is placed on a platform support 11 that is connected with a lifting device 2. By means of the lifting device 2, the platform support 11 together with the platform 10 can be moved from the raised position according to figure 1 towards a lowered position (see figure 2) to below the waterline 3. In this respect, by means of a mechanical forced coupling, the platform 10 is moved at the same time relative to the water vehicle 6 backwards, in order of discarding a collision of platform 10 with a boat drive 63, here a Z drive.

The lifting device 2 has a basic body in the form of a housing 20 that is connected to the stern 61 of the water vehicle 6. The basic body 20, depending on the angle of the stern and the shape of the boat hull 60, can have different shapes externally adapted accordingly. It is also possible that the basic body 20 itself can be modified as to its shape through adjustable parts of the body and can thus be adapted to different helmet shapes.

In the basic body 20, in a parallelogram-shaped arrangement, a first lifting arm 21 and a second lifting arm 22 are each articulated, each at one end. A power drive 4, here a piston and cylinder unit, is arranged in the basic body 20 and is articulated with one end in the basic body 20 and with the other end in the second lifting arm 22. On the other end of the two lifting arms 21, 22, the latter are connected with an articulation head 12. With the articulation head 12 a first fixed part of the platform support 11 is connected. second part of the platform support 11 that is connected to the platform 10. The platform 10 together with the movable part of the platform support 11 can be moved by means of a coupling bar 15 which is articulably connected at its end away from the platform support 11 with a 15 'drive rod. The connecting rod 15 'in turn is connected in a torsion-resistant manner with its other end to the second lifting arm 22. This causes the aforementioned forced coupling.

For the exact horizontal orientation of the platform 10, an adjustable diagonal support is used in its length 13 that connects with one of its ends with an area of the lower end of the articulation head 12 and with its other end with an external area of the fixed part of platform support 11.

Figure 2 of the drawing shows the platform elevator 1 of Figure 1, now with platform lowered 10, once again in a side view. In this position, platform 10 is below waterline 3, so that it can now be carried into the water, for example, an auxiliary boat not shown here that had previously been found on platform 10. It is understood that The platform 10 can also be placed in intermediate positions, for example, in a position just above the waterline 3 for use as a bathing platform.

To adjust the platform 10 from its raised position to its lowered position, the power drive 4 is operated in the extension direction, whereby the two lifting arms 21 and 22 are rotatably moved downwards, that is, here in the direction counter clockwise. Due to the parallelogram arrangement, in this respect the horizontal orientation of the platform 10 is maintained. Through the rotating movement of the arms 21 and 22, the drive rod 15 'is also rotatably rotated in the opposite direction to the clockwise, whereby the coupling bar 15 moves in the extension direction, that is, from the stern 62 of the water vehicle 6. Through this platform 10 is carried with the movable parts of the platform support 11 in the position displaced backwards visible in figure 2. In this position, the platform 10 is behind the boat drive 63, so it cannot collide with the latter.

Figure 3 of the drawing shows the platform elevator 1 of Figure 1, with raised platform 10, in a view on the stern 62 of the water vehicle 6. The surface of the platform 10 forms here with the cover 61 an accessible continuous surface without steps

In the central area of the stern 62, the canister 63 is performed here as a double Z drive. Both of the left side and the right side on the outside of the latter are in each case a lifting device 2 of the platform lift 1. The two lifting devices 2 were performed identically and their power drives 4 can be operated in a synchronized manner in order to guarantee a continuous movement of ascent and descent of the platform 10 without tipping or binding.

On the upper side each platform support 11 carries fixing consoles 10 ’by means of which platform 10 is connected with the two platform supports 11.

In addition, Figure 3 shows that both the first lifting arm 21 and also the second lifting arm 22 are each made as double bridge arms. In this regard, looking in a transverse direction of the water vehicle 6, the first lifting arm 21 is so wide that the second narrower lifting arm 22 fits into the first lifting arm 21. Inside the second lifting arm 22 is can recognize power drive 4.

Below each lifting device 2 there is a stabilizing fin 64 of the water vehicle 6 which can be adjusted in each case by means of a corresponding stabilizing fin drive 64 ’, here a piston and cylinder unit. Through a corresponding cavity 24 on the side facing the stern 62 of the basic body 20 of each lifting device 2, the latter is not affected by the movements of the stabilizing fins and the actuations of the stabilizing fins 64 ’.

The amount of lifting devices 2 used to lift and lower the platform 10 depends in particular on the size and weight load of the platform 10; differently than illustrated in Figure 3, embodiments of the platform lift 1 with a single lifting device 2 or with more than two lifting devices 2 are also possible.

Figure 4 of the drawing shows a lifting device 2 of the platform elevator 1, in the raised position of the platform support 11 and without the platform 10, in a perspective view inclined from the upper rear. On the lower right side in Figure 4 the basic body 20 is visible, whose front side opposite the viewer forms a mounting flange 20 ’for connection with the stern of the water vehicle not shown here. To produce the mechanical connection in the basic body 20, projecting fastening bolts 23 are placed, which are conducted through corresponding perforations arranged in the stern of the water vehicle when the platform elevator 1 is mounted in a water vehicle. Parallel bolts 23 can also extend supply ducts for power drives.

The basic body 20 is made in the form of a housing, where the drive 4 in the form of the hydraulic piston and cylinder unit is arranged in the interior and between the lifting arms 21 and 22 in the most covered and protected manner. An additional cover cover of the rear side 25, preferably of metal, which here has a curved shape and is arranged approximately parallel to the power drive 4, protects the power drive 4 and the corresponding hydraulic elements against damage by external influences and Reduces the danger of injury for people who use the platform 1 lift in the bathroom operation. Instead of metal, the cover 25 can also be made of sturdy plastic.

In a first articulated connection 41 the power drive 4 is connected at one of its ends with the basic body 20. With a second articulated connection 42 the other end of the power drive 4 is connected to the second lifting arm 22. In its lower front area the mounting flange 20 'of the basic body 20 is made with a cavity 24 in order to avoid a collision with parts already existing in the stern of the water vehicle, such as for example the stabilizing fins mentioned above.

Through the operation of the power drive 4, the lifting arms 21 and 22 are rotatably moved upwards, that is, clockwise. For this purpose, the lifting arm 21 is supported by a first joint 21.1 in the basic body 20 and a second joint

21.2 in the articulation head 12. The lifting arm 22 is connected with the basic body 20 in a first joint 22.1 and with the articulation head 12 in a second joint 22.2.

The non-movable part 11.1 of the platform support 11 is connected to the articulation head 12. The free end of the rear-facing platform carrying part 11.1, that is, in figure 4 to the left, is supported by the support diagonal 13. By means of a movement guide 14, a second longitudinally movable part 11.2 of the platform support 11 is connected to the fixed part 11.1, the movement of which is mechanically carried out by forced coupling with the lifting movement of the platform elevator 1. In on the upper side of the platform support 11 the two fixing consoles 10 'are visible in which fixing openings in the form of several long holes are placed, in order to place the platform not shown here in a corresponding position.

Figure 5 shows the lifting device 2 of the platform elevator 1 of Figure 4, once again in the raised position, now in a perspective view inclined from the front. The view of the spectator falls here on the front side of the basic body 20 with the mounting flange 20 ', from which the fastening bolts protrude 23. The mounting flange in its lower area is open and there forms the cavity 24 of the body basic 20. The lifting arms 21 and 22 in the joints 21.1 and 22.1 are connected to the basic body 20. In the joint

21.2 the lifting arm 21 is connected to the articulation head 12. The corresponding joint of the second lifting arm 22 is hidden here through the first lifting arm 21.

The forward-facing drive rod, that is, to the left 15 ’, is connected to the upper end of the second lifting arm 22 with one of its sides torsionally resistant. The other end

of the connecting rod 15 'is connected articulately with the coupling bar which extends inclined upwards and backwards 15. The upper end of the coupling rod 15 in turn is articulably connected with the second movable part 11.2 of the platform support 11. Between the lower area of the articulation head 12 and the free end of the fixed part 11.1 of the platform support 11, the diagonal support 13 is visible once more. In the fixed part 11.1 of the platform support 11 in the sliding guide 14 drives the second movable part 11.2 of the platform support 11. From the upper side in the movable parts 11.2 of the platform support 11 the two fixing consoles 10 'are visible.

On the lateral surface facing the viewer in Figure 5 of the basic body 20, a safety hook 5 is rotatably supported around an axis that extends horizontally and transversely. In the raised position shown here of the platform support 11 the safety hook 5 is in a fixing coupling with a safety bolt 51 which is placed in the first lifting arm 21. In this way an undesired independent descent of the platform support 11. By means of a power drive 52, here a small piston and cylinder unit, the safety hook 5 can be rotatably moved upwards in a separation position, in order to release a descent of the platform support eleven.

Figure 6 shows the lifting device 2 of Figure 4, in the down position of the platform support 11, in a perspective view inclined from the upper rear. Here, the lifting arms 21, 22 are rotatably moved through the operation of the power drive 4 in the direction of extending its piston rod down in a lower end position. At the same time, due to the forced mechanical coupling described above, part 11.2 of the platform support 11 moves backwards, that is, in figure 6 to the left in the slide guide 14.

In the upper part of the right side in figure 6, the basic body 20 can be recognized in the form of a housing with the additional cover cover 25 on which or under which the power drive 4 is arranged. On the side opposite the viewer of the basic body 20 the safety hook 5 is arranged.

In addition, Figure 6 illustrates that the lifting arms 21 and 22 are made as double bridge arms and are arranged inside each other. The displacement device integrated with the coupling rod and the connecting rod is hidden here through the platform support 11 and the articulation head 12. As for the additional individual parts of Figure 6 we refer to the above description.

Figure 7 shows the lifting device 2 of Figure 6, once again in the down position of the platform support 11, in a perspective view inclined from the front, where the view now falls, compared to Figure 6, on the other side of the lifting device 2.

In the upper part of FIG. 7, the basic body 20, which has the mounting flange 20 'with the fastening bolt 23 and the cavity 24, is visible once more. On the lateral surface now oriented towards the viewer of the basic body 20 is arranged the rotating movement safety hook 5 which can be rotatably moved by the corresponding power drive 52. The safety bolt 51 in the first lifting arm 21 due to the downwardly rotated position of the latter is now disengaged from the safety hook 5 and away from it down.

Figure 8 shows the lifting device 2 of the platform lift 1 of Figure 4, now in the raised position of the platform support 11, in a side view. In the lower part of the right side in figure 8 is the basic body 20 with the mounting flange oriented here to the right 20 ’. From the basic body 20, the lifting arms 21 and 22 now stand out approximately vertically upwards. With the upper end of the lifting arms 21 and 23, the articulation head 12 is connected, which in turn is connected with the fixed part 11.1 of the platform support 11 in a non-displaceable manner, but rotatably around an axis that is extends horizontally and transversely, that is, vertically towards the drawing plane. Thus, by means of the diagonal support 13 adjustable in its length with the help of the threaded spindle 13 ', the horizontal orientation of the platform support 11 and the platform not shown here can be adjusted. By means of the driven connecting rod rotated clockwise 15 'together with the second lifting arm 23 and the coupling bar coupled therewith 15, the movable part 11.2 of the platform support 11 has been displaced in relation to the fixed part 11.1 of the platform support 11 in a retracted end position.

Figure 9 shows the lifting device 2 of Figure 8, once again in the raised position of the platform support 11, in a side view, but now with hidden parts represented with dotted lines, that is, almost transparent. In addition to the visible parts of Figure 8, the position of the power drive 4 within the basic body 20 and the position of the additional cover 25 are now visible. Furthermore, the coupling bar 15 can now be recognized on its entire path from the free end of the drive rod 15 'to the movable part 11.2 of the platform support 11. Now the corresponding threaded spindle 13' which is here mostly in the diagonal support 13 is made visible further. Finally, Figure 9 illustrates that in the upper end position shown here of the platform support 11 the lifting arms 21 and 22 are partially inside each other.

Figure 10 shows the lifting device 2 of Figure 9, in raised position of the platform support 11, in vertical section according to the line CC of Figure 11, whereby the elements of the lifting device are made visible directly 2 which are normally located hiddenly within the basic body 20 and within the lifting arms 21 and 22. In the lower part of Figure 10, hidden back and up through the additional cover cover 25 is it can now fully recognize the power drive 4 in the form of the piston and cylinder unit which in the upper articulated connection 41 with the basic body 20 and in the lower articulated connection 42 is coupled with the second lifting arm.

In the upper part of figure 10 the drive rod 15 'is now fully visible, which is connected in a torsion-resistant manner at its left end of figure 10 with the upper end of the second lifting arm 22. The connecting rod of actuation 15 'with the other end is connected articulately with the lower end of the coupling bar which in turn is connected articulated at its upper end with the movable part 11.2 of the platform support 11.

The coupling bar 15 has a fixed length in the simplest case. However, as an alternative it can also be carried out in a modifiable and adjustable manner in terms of its length, which is particularly convenient when the basic body 20 and the system of the lifting arms 21, 22 have a modified constellation. The same coupling bar 15 can then be used, which should only be adjusted correspondingly for its length.

In addition, in Fig. 10 the diagonal support 13 disposed between the articulation head 12 and the platform bearing part 11.1 with the threaded spindle 13 ’that serves to adjust its length is also visible.

Behind the upper area of the basic body 20 is located the safety hook 5 which is here in fixing coupling with the security bolt 51.

Figure 11 shows the lifting device 2 of the platform elevator 1 of Figure 10, in the raised position of the platform support 11, in a top view. Fundamentally, only the movable part 11.2 of the platform support 11 is visible here with the clamping consoles placed on top of it 10 ’. On the right side of the platform support part 11.2 a part of the upper side of the basic body 20 can still be recognized. Most of the additional parts of the platform elevator 1 and the lifting device 2 are located here hidden under the support of platform 11. Laterally to the side, that is, in Figure 11 above and below the platform support 11, the two parts of the first lifting arm 21 are still visible. Fully on the right side of Figure 11 it can be recognized a part of the mounting flange 20 'of the basic body 20 with the fastening bolts placed therein. In Fig. 11, the very compact construction of the lifting device 2 with a smaller width in the transverse direction is particularly evident, that is, here in the plane of the drawing perpendicular to the section line C-C.

Figure 12 shows the lifting device of Figure 4, with a position descended from the platform support, in a side view. On the right side, the basic body 20 is visible with the additional cover cover 25 for power actuation 4. From the basic body 20, the lifting arms 21 and 22 are now oriented inclined downwardly. The articulation head 12 with which the fixed part 11.1 of the platform support 11 is connected is located at the downwardly oriented end of the lifting arms 21 and 22. The platform support 11 protruding from the articulation head 12 is supported by means of the diagonal support 13. With the fixed part 11.1, the movable part 11.2 of the platform support 11 is movably connected in the slide guide 14. By means of the forced mechanical coupling which had already been described above by the coupling bar 15 and the connecting rod 15 ', the movable part 11.1 of the platform support 11 is now extended towards its final outward position, according to figure 12 towards the left side.

Figure 13 shows the lifting device of Figure 12, once again in the lowered position of the platform support, in a side view, with hidden parts represented by dotted lines, that is to say, practically transparent. In the area of the basic body 20, the arrangement and position of the power drives 4 and 52 for the lifting device 2 and for the safety hook 5 can be recognized in this way. On the left side of Figure 3 The position and path of the coupling bar 15 and the connecting rod 15 'are now fully visible. Finally, Figure 13 illustrates that also in the fully lowered position of the platform support 11 the lifting arms 21 and 22 are located mostly inside each other. With respect to the other parts of Figure 13 we refer to the previous description.

Figure 14 represents the lifting device of Figure 12, once again in the down position, in vertical section according to the line EE of Figure 15. The otherwise hidden parts of the lifting device 2, in particular its actuation of power 4, the corresponding cover cover 25 as well as the displacement device integrated with the drive rod 15 'and the coupling bar 15 become visible in this way in terms of their arrangement and trajectory.

Figure 15 of the drawing finally shows the lifting device 2 of Figure 14, once again in the down position, in a top view. On the part of the left side of Figure 15, the platform support 11 with its first fixed part 11.1 and its longitudinally movable part in relation thereto 11.2 is visible. The latter carries on its upper side the 10 ’clamping consoles for the platform to be placed there. On the upper side of the fixed part 11.1 of the platform support 11 two longitudinally extended grooves are visible as parts of the slide guide 14 of the movable part 11.2 of the platform support 11 in relation to its fixed part

11.1.

The lifting device is visible on the right side of Figure 15, where both the first lifting arm 21 and the second lifting arm 22 in the form of double bridge arms are visible here. Fully on the right side in Figure 15 is the basic body 20 in which the power drive 4 is housed. From the basic body 20 protrude forward, that is, here towards the right side, the fastening bolts 23; The rear cover 25 is located in front of them. The safety hook 5 is arranged on the upper side surface of Figure 15 of the basic body 20.

List of reference numbers:

  Denomination Number

1 Platform elevator 10 Platform 10 ’Clamping consoles in 11.2 for 10 11 Platform support

11.1 First fixed part of 11

11.2 Second movable part of 11 12 Articulation head 13 Diagonal support 13 ’Threaded spindle on 13 14 Travel guide 15 Coupling bar 15’ Drive rod

 2 Lifting device 20 Basic body 20 ’Mounting flange 21 First lifting arm 22 Second lifting arm

21.1 Articulation for 21 in 20

21.2

Articulation for 21 in 12

22.1

Joint for 22 in 20

22.2 Joint for 22 in 12 23 Clamping bolts 24 Cavity in 20 25 Cover of cover

3 Waterline

4 Power drive (piston and cylinder unit) for 2 41 Connection 4 to 20 42 Connection 4 to 22 5 Safety hook 51 Safety bolt 52 Power drive for 5

6 Water vehicle 60 Helmet 61 Deck 62 Stern 63 Boat drive 64 Stabilizer fin (s) 64 ’Stabilizer fin drive

Claims (15)

1. Platform lift (1) for a water vehicle (6) with a helmet (60) and an accessible cover (61), where the platform lift (1) is designed in particular for placement in a stern area (62) of the hull (60), where the platform lift (1) for lifting and lowering a platform (10) presents a lifting device (2) with power drive (4) and presents a displacement device for a longitudinal displacement forcedly coupled with the action of raising and lowering the platform (10), wherein the lifting device (2) comprises lifting arms (21, 22) which are rotatably supported on one side by less a basic body (20) that can be placed on the outside of the hull (60) of the water vehicle (6) and that rotatably rest on the other hand on at least one articulation head (12) which is connected with at least one platform support (11) that supports the platform (10) in a longitudinally movable manner and wherein the displacement device comprises at least one coupling bar (15) that can be connected on the one hand with a part of the lifting device (2) and on the other hand with the platform (10), characterized in that the displacement device is integrated in the lifting device (2).

2.

 Platform elevator according to claim 1, characterized in that the lifting arms (21, 22) and / or the platform support (11) and / or the articulation head (12) of the lifting device (2) are made in the form of U or rectangular profiles or parallel double struts between them and because the coupling bar (15) of the displacement device is arranged in hollow or intermediate spaces and / or grooves of the lifting arms (21, 22) and / or of the platform support (11) and / or of the articulation head (12).

3.

 Platform lift according to claim 1 or 2, characterized in that the displacement device can be operated with a drive rod (15 ') that is coupled on one side in a torsion-resistant manner with the lifting device (2) and is connected in an articulated manner on the other hand with the end away from the platform of the coupling bar (15) and which is arranged in the hollow or intermediate spaces and / or grooves of the lifting arms (21, 22) and / or of the platform support (11) and / or of the articulation head (12).

Four.

Platform lift according to claim 3, characterized in that the drive rod (15 ') is made straight or curved in the form of a sickle and at or near one end of the articulation head side of one of the arms of Lift (21, 22) is connected in a resistant manner against torsion with the latter.

5.

 Platform lift according to claim 4, characterized in that the end of the connecting rod (15 ') which is connected in an articulated manner with the coupling bar (15) is located in a line that extends substantially rectangularly with with respect to the longitudinal axis of the lifting arm (21, 22) that supports the connecting rod (15 ') through its end on the side of the articulation head.

6.

 Platform lift according to one of claims 1 to 5, characterized in that the lifting arms (21, 22) seen in their horizontal transverse direction are made with a variable width and because the wider lifting arm (21, 22) on its side facing the narrowest arm (22, 21) it is at least partially open with respect to its receptacle.

7.

 Platform elevator according to one of claims 1 to 6, characterized in that the lifting device (2) has a single parallelogram arrangement of lifting arms (21, 22) and correspondingly a single articulation head ( 12) and a single platform support (11) and a single coupling bar (15).

8.

 Platform lift according to one of claims 1 to 6, characterized in that the lifting device (2) has several arrangements located side by side in the form of a parallelogram of lifting arms (21, 22) and correspondingly several articulation heads located next to each other (12) and several platform supports located next to each other (11) and several tie rods (15).

9.

 Platform lift according to one of claims 1 to 8, characterized in that the basic body

(20) on its side oriented in the state of additional mounting towards the hull (60) of the water vehicle (6) it has one or more openings or cavities (24) for clearing the projecting parts arranged in the water vehicle (1), such such as paddle drive or drive with stabilizer fins (64 ').

10.

 Platform lift according to one of claims 1 to 9, characterized in that the platform support (11) in the longitudinal direction has a first support part fixedly connected (11.1) with the articulation head (12) and a second support part connected with the latter in a longitudinally movable manner (11.2), wherein the second support part (11.2) forms or supports the platform (10).

eleven.

 Platform elevator according to claim 10, characterized in that, on the upper side of the longitudinally movable support part (11.1), clamping consoles (10 ’) are provided with fastening elements for the platform (10).

12.

 Platform lift according to one of claims 1 to 11, characterized in that an adjustable diagonal support (13) is arranged between a first area of the articulation head (12) and an external area of the platform support (11) its length preferably by means of a diagonal spindle (13 ').

13.

 Platform lift according to one of claims 1 to 12, characterized in that in the body

5 basic (20) an approximately horizontal safety hook (5) is arranged in its basic position that can be rotatably moved by a power drive (52) that in the raised position of the platform (10) with a bolt of safety (51) in a part of the device (2) can be carried to a detachable safety coupling that fixes its position. 14. Platform lift according to one of claims 1 to 13, characterized in that the body 10 basic (20) is configured as a housing, preferably with a cover cover assigned to the power drive (25) and because as a power drive (4) of the lifting device (2) in the basic body (20) is arranged a piston and cylinder unit that on one side is articulated with the basic body (20) and on the other hand with one of the lifting arms (21, 22). 15. Water vehicle (6) with a helmet (60) with an accessible cover (61), characterized in that it has a platform lift (1) according to one of claims 1 to 14.