WO2011029737A1

WO2011029737A1 - Support arrangement for a lift gate that can be lowered into a subsurface shaft

Info

Publication number: WO2011029737A1
Application number: PCT/EP2010/062615
Authority: WO
Inventors: Georg Wirrer; Paul Graf
Original assignee: Georg Wirrer; Paul Graf
Priority date: 2009-09-10
Filing date: 2010-08-30
Publication date: 2011-03-17
Also published as: AT508699B1; AT508699A1

Abstract

The invention relates to a support arrangement (1) for supporting a lift gate (7) that can be lowered into a subsurface shaft (2), having receiving means (4, 5, 6) for receiving and fastening the lift gate (7) to the support arrangement (1), and having guiding means (8, 9, 10, 11, 12, 13) for guiding the receiving means (4, 5, 6) when lifting and lowering the lift gate (7), and having driving means (14, 15) for driving the receiving means (4, 5, 6) in order to lift and lower the lift gate (7). The driving means (14, 15) and the guide means (8, 9, 10, 11, 12, 13) for guiding the lift gate (7) that is fastened to the support arrangement (1) are exclusively provided in the subsurface shaft (2), and the driving means (14, 15) are formed by a hydraulic drive driving a scissor element (16, 17, 18) connected to the receiving means (4, 5, 6) and to the subsurface shaft (2).

Description

Carrier device for a lift gate which can be lowered into a subfloor shaft

The invention relates to a support means for carrying a in a

Underfloor shaft retractable lift gate with receiving means for recording and

Attaching the lifting gate on the support means and with guide means for guiding the receiving means when lifting and lowering the lifting gate and with

Drive means for driving the receiving means to raise and lower the lifting gate. The invention further relates to a lifting gate, in particular garden gate, for sinking into a subfloor shaft, and further to a lifting gate system for

Blocking a driveway or closing an opening.

A support means for lowering a wall element in a wall breakthrough is known from the utility model AT 008 630 Ul. In the known carrier device, a receiving means forming lifting frame is driven with a spindle drive having guide profiles provided along in the underfloor shaft

Guides are guided. A mounted on the lifting frame wall element has guide rollers, which are guided along a guide frame mounted in the wall opening.

The known carrier device has the disadvantage that the guide elements are very complicated and also maintenance-intensive. For example, the guide rollers must be lubricated periodically and, if necessary, the guide frame must be readjusted in the event of heat / cold fluctuations due to slight movements of the wall.

Furthermore, the spindle drive in the underfloor shaft has the disadvantage that fallen into the underfloor shaft parts (such as leaves or stones) can damage or even block the gears. In addition, the drive motor of the spindle drive attached to the bottom of the underfloor shaft can be damaged by water entering the underfloor shaft, which is why the drive device of the known carrier device is prone to failure and maintenance-intensive, in particular for outdoor use.

The invention has for its object to provide a support means for supporting a lifting gate, in particular a garden gate for outdoor use, in which the above-mentioned disadvantages are avoided. The invention achieves this object in that the guide means for guiding the lifting gate attached to the carrier device and the drive means exclusively in the

Underfloor shaft are provided and that the drive means are formed by a hydraulic drive which drives a connected to the receiving means and with the underfloor shaft scissor element.

As a result, the advantage is obtained that the lifting gate itself does not have to have guide means and thus can be made free-standing. The guide means of the support means are designed to be solid, to accommodate also acting on the lifting gate forces. The support device thus provides no special requirements for the construction of the lifting gate and allows a variety of design options for the

Support device attachable lifting gates. For example, a lifting gate forming a semicircle can be fastened to the carrier device, which laterally could not be guided at all - according to the prior art described above.

Furthermore, due to the lack of guide means above the earth level, the advantage is obtained that, for example, no branches of bushes planted next to the lifting gate can get caught in the guide means. This measure thus reduces both the

Error prone as well as the maintenance and allows additional

Freedom of design for different design variants of lift gates.

The fact that the carrier device can be installed in the underfloor shaft and that the customer can later select a lifting gate which corresponds to his design wishes and fix it to the carrier device is an additional decisive advantage of the carrier device according to the invention. Also, after a period of time, the customer can exchange the lifting gate, which may have been damaged by an accident or no longer meets his design wishes, by removing only four screws against another lifting gate. The lifting gates can thus be designed, produced and delivered independently of the manufacture and assembly of the carrier device.

Due to the design of the drive means as a hydraulic drive, which drives a scissor element, several advantages are obtained. Hydraulic drives in themselves allow a very quiet, smooth and accurate drive, which is when raising and lowering

For example, a lift gate leaves a very positive impression on the viewer. The scissor element is in its simplest form, for example by formed two rods, profile iron or flat iron, each having a hole in the middle through which a bolt has been inserted in order to connect them rotatably. As a result, four legs of the scissor element are formed, wherein the end of a first leg of the scissor element with the underfloor shaft and the end of a second leg of the scissor element is rotatably connected to the receiving means and the ends of a third and a fourth leg of the scissor element are guided linearly displaceable. The use of such a scissor element as a mechanical link between the hydraulic drive and the receiving means is particularly advantageous in the external drive, since the scissor element is very reliable and resistant to contamination in the underground shaft shaft by its simple structure.

By mounting the two ends of the hydraulic drive to a respective hole or other fastening means on two of the four legs of the scissor element in such a way that the two holes substantially the same distance from the pivot point of the scissor element formed by the bolt, ensures that the Hydraulic drive is substantially perpendicular in both the raised and in the lowered position of the receiving means. In this case, constant relationships between the

Lifting speed of the hydraulic drive and the receiving means or the lifting gate, which is advantageous. As a result, the lift gate moves up or down at a substantially constant speed. Furthermore, results from this arrangement of the hydraulic drive on the scissor elements, the advantage of a constant during the lowering or lifting of the lifting gate effort.

By the storage of the two linearly guided ends of the scissor element, each with a linear ball bearing, the guide rods and guided along this guide rods, there is the advantage that the leadership of the scissor element is lifted from the bottom of the underground shaft and thus dirt near the bottom does not interfere , Seals of the linear ball bearings prevent the ingress of dust, which are obtained with the linear ball bearings particularly robust and smooth due to the ball bearing guide elements for the scissor element.

The moving parts of the entire support means with mounted on the support means lifting gate have a certain weight, which must be lifted by the hydraulic drive. It is therefore advantageous to provide weight relieving means which already exert a certain upward pull on the receiving means used in the

Size of the weight of the moving parts is adjusted. In this way, the lifting gate can be raised and lowered with relatively little effort by the hydraulic drive, whereby on the one hand a smaller and relatively weak hydraulic drive can be used and on the other hand, the energy costs of the carrier device are kept low.

In the case of hoisting gates that can be lowered in a subfloor shaft in the outer area

penetrating liquids or rain cause considerable damage. It is therefore advantageous to provide pumping means which, in the event that the water level in the underfloor shaft rises above a certain mark, pump the water from the underfloor shaft. It is particularly advantageous to design the water detection means without moving parts, for example by means of a resistance measurement, since this considerably reduces the necessary maintenance effort.

It is also advantageous to design the drive means in such a way that the lift gate is approached slowly and slowly decelerated at the end of the lifting or lowering operation. This reduces the wear of the carrier device and contributes to the positive overall impression of the carrier device.

It is also advantageous to provide the drive means with a safety stop that stops raising or lowering the lift gate or even reverses, for example, if a car is located above the underfloor shaft. A person skilled in the art is aware of different detectors and sensors (for example motion sensor, light barrier,

Drive force sensors, hydraulic pressure sensors) such safety stops of

For example, electric garage doors known. Another advantage of

Weight reliever is that the safety technology or the

Safety stop can be executed much more precisely, because differences in the

Force can be detected by the hydraulic drive more accurate.

It is also advantageous to provide massive support profiles on the receiving means for fixing a variety of lifting gates. Particularly advantageous has proven to provide round bars as support profiles, simply pushed onto the different profiles having lifting gates and can be attached to these "floating", which is discussed in more detail below. It is also advantageous to provide one or more headlights in the underfloor shaft, which illuminate the lifting gate in its raised position from below. This creates an interesting overall impression and prevents overlooking the lifting gate, which can prevent accidents.

Embodiments of the invention will now be described in more detail by way of non-limiting example with reference to the drawings.

Fig. 1 shows an embodiment of a built-in underfloor shaft

Carrier device.

FIG. 2 shows the carrier device according to FIG. 1 in a plan view.

FIG. 3 shows the carrier device according to FIG. 1 in a side view.

FIG. 4 shows the carrier device according to FIG. 1 with the lifting gate mounted on the carrier device in a lowered position.

Fig. 5 shows the carrier device according to Figure 4 in a partially raised position.

FIG. 6 shows the carrier device according to FIG. 4 in a raised position.

Fig. 7 shows a sectional view of the carrier profile of the receiving means to which a lifting gate with rectangular frame profile "floating" is attached.

Fig. 8 shows a sectional view of the carrier profile of the receiving means to which a lifting gate with a round frame profile "floating" is attached.

Fig. 9 shows schematically the support device according to Figure 1, wherein

Weight relief means are provided.

Fig. 10 shows a universal joint with which the scissor element is connected to the linear ball bearing.

Figure 1 shows the support means 1, which is provided in a subfloor shaft 2, which lies entirely below the earth level 3. The carrier device 1 has receiving means which are formed by a scissor table 4 and carrier profiles 5 and 6. An illustrated in Figure 4 lifting gate 7 is pushed onto the carrier profiles 5 and 6, until it on the Scissor table 4 rests. The support device 1 further comprises guide means which are displaceable by guide rods 8 and 9 and along the guide rods 8 and 9

Linear ball bearings 10, 11, 12 and 13 are formed. The guide rods 8 and 9 are at the bottom of the underground shaft 2 and - as shown in Figure 3 - by means of two

Retaining elements H anchored at the upper end of the wall of the underground shaft 2. The

Guide rods 8 and 9 guide, by means of the linear ball bearings 10, 11, 12 and 13, both the receiving means and the lifting gate 7 fastened on the receiving means.

The carrier device 1 further comprises drive means, which are formed by a hydraulic drive, which has a hydraulic cylinder 14 and one shown in FIG

Hydraulic pump 15 and not shown in the figures has hydraulic hoses. The hydraulic hoses guide the hydraulic oil pumped by the hydraulic pump 15 into the hydraulic cylinder 14. The support device 1 now also has a scissor element, which is formed by two rods 16 and 17 formed as a forming tube

Connecting pin 18 is formed. The end 19 of a first leg 20 of the

Scissor element is connected to the lower floor shaft 2 and the end 21 of a second leg 22 of the scissor element is rotatably connected to the scissor table 4. Furthermore, the ends 23 and 24 of a third leg 25 and a fourth leg 26 of the

Scissor element via a universal joint KG shown in Figure 10 by a respective

Linear ball bearings 27 and 28 longitudinally guided in the figure 1 guide rods, not shown. The guide rod is pushed through the linear ball bearing 27 shown in FIG. 10 and mounted on it in a displaceable manner. The universal joint KG ensures that no torques act on the linear ball bearing, whereby a substantially frictionless guidance of the ends 23 and 24 of the legs 25 and 26 of the scissor element is ensured, which is essential for the reliable operation of the scissor element.

The first leg 20 and the second leg 22 each have a hole 29 and 30, in which the hydraulic cylinder 14 is mounted rotatably mounted. The two holes 29 and 30 are provided at the same distance A from the connecting bolt 18, which is why the hydraulic cylinder 14 regardless of the position of the receiving means always in

Essentially vertical. This results in the advantages indicated above.

FIG. 2 shows a plan view of the carrier device 1 incorporated in the underfloor shaft 2, including the lifting gate 7, wherein the underfloor shaft 2 is formed by a concrete layer 31. Cover plates 33 and 34 cover the underfloor shaft 2 down to the necessary for the removal of the lifting gate opening and thus prevent accidents and the falling of large parts in the lower bay 2. By unscrewing the cover 34 is the

Hydraulic pump 15 very easy to access for service.

FIG. 3 shows a side view of the support device 1 installed in the underfloor shaft 2. In the underfloor shaft 2 a water pump 32 including a sensor is provided which, when the sensor detects water, pumps off the water accumulated in the underfloor shaft 2. As a result, damage to the carrier device 1 are excluded by the water.

In addition, just below ground level 3, the location of the

Hydraulic pump 15 ensures that water damage to the support device 1 at a

Problem with the water pump 32 can be avoided. The sensor of the water pump advantageously has no moving parts and detects entering into the lower shaft shaft 2 liquids by resistance measurement.

In Figures 4, 5 and 6, the support means 1 including lifting gate 7 is shown in three positions. On the basis of these figures, it can be clearly seen that the guide rods 8 and 9, regardless of the position of the support device 1, always remain fixed to the underfloor shaft 2 below ground level 3 and no longer guide the lifting gate 7

Guide means are necessary outside the sub-floor shaft 2 in the visible area for the user. Furthermore, it can be clearly seen from these figures that the hydraulic cylinder 14 is always substantially perpendicular regardless of the position of the receiving means.

Figure 7 shows a sectional view of the carrier profile 5 of the receiving means, to which the lifting gate 7 is attached with rectangular frame profile. As shown in Figures 4 and 5, the respective upper fasteners of the support profiles 5 and 6 are each performed on a hole 36 and 37 of the lifting gate 7, whereas the lower fasteners of the support profiles 5 and 6 are provided on slots 38 and 39, respectively. One each

Screw holder SH is connected to the carrier profile 5 or 6 and carries a screw S each one slidable in the respective slot 38 or 39

Fixing element BE presses on the carrier profile 5 or 6. The lifting gate 7 is fixed in this way "floating", whereby manufacturing tolerances and also

Expansion operations can be compensated without manual readjustment. As a result, a smooth running of the linear ball bearings 10, 11, 12 and 13 is ensured. Figure 8 shows a sectional view of another embodiment of the invention, in which the carrier profile 5 of the receiving means is attached to a lifting gate 35 with a round frame profile.

FIG. 9 schematically shows the carrier device 1 according to FIG

Weight relief means are provided. According to this embodiment, particularly simple weight-relieving means are selected, which are formed by a wire rope 40, rollers 41 and 42 and a weight 43. The weight 43 is dimensioned such that it at the breakpoint 44, the receiving means just as much pulls up to the weight of the lifting gate 7 and the weight of the hydraulic drive to be lifted parts of

Carrier 1 just balances. Thus, the lifting gate 7 "floats" in any

Positions of the retractable lift gate 7.

The safety technology is in the lifting gate shown in the figures by a

Pressure sensor formed, which measures the pressure in the hydraulic oil. As a result of the use of the scissor element uniform during lifting and lowering

Force is needed and thus a substantially uniform pressure in the

Hydraulic oil sets, pressure changes in the hydraulic oil indicate an external

Force on the lifting gate 7. So if, for example, a car over the

Underground shaft 2 is and the lifting gate 7 is moved up, then the pressure in the hydraulic oil increases sharply as soon as the lifting gate 7 is present at the car. Due to the

Weight relief means is the force of the hydraulic cylinder 15 and thus the pressure in the hydraulic oil is relatively small, which is why advantageously even small

Pressure changes can be clearly detected.

It may be mentioned that the carrier profiles can also have a different design in order to be able to attach lifting gates which do not have a vertical lateral frame.

It may be mentioned that the carrier device according to the invention can be used advantageously not only in garden gates but also for example in garage doors or window and door elements.

It may be mentioned that the guide means could also be formed by U-profiles fastened to the underfloor shaft and rollers running in the U-profiles. It may be mentioned that a lifting gate according to the invention can also have a door leaf through which, for example, a pedestrian can pass without the lifting gate having to be lowered. In this case, the safety technology would detect an open door when lowering the lift gate and raise the lift gate again.

It can be mentioned that a particular advantage of the invention

Carrier is given by the fact that it can be used as a module in the underground shaft and with only a few screws (for example, 4 screws) must be secured therein. This facilitates the initial installation but also the necessary necessary exchange essential.

It can be mentioned that it is particularly advantageous if those at the bottom of the

Underfloor shaft fastened elements of the scissor element are adjustable via extensions from the earth level.

It may be mentioned that a carrier device according to the invention can also have more than one scissor element. For example, two or three scissor elements could be arranged one above the other. If only one scissor element is provided with a lifting gate width of 3 meters, a maximum lifting height of approximately 1.9 meters could be lifted out of the underfloor shaft with the carrier device. This provision of two or more scissors elements on top of each other is particularly advantageous when the ratio of Hebetor width to Hebetor height <= 1.6.

It should be noted that the carrier profiles 5 and 6 of the embodiment of the invention are fastening means with which the lifting gate is attached by sliding. The leadership of the support device according to the invention and the lifting gate is carried out exclusively by the provided in the lower bay linear ball bearings 10, 11, 12 and 13 mounted in the lower shaft guide rods 8 and 9. The support profiles 5 and 6 can thus be omitted. As a result, the advantage is obtained that all guide elements of the lifting gate are provided in the underfloor shaft and do not affect the design of the lifting gate.

Claims

Claims:

1. support means (1) for supporting a substructure shaft (2) retractable lifting gate (7) with receiving means (4, 5, 6) for receiving and securing the lifting gate (7) on the support means (1) and with

Guide means (8, 9, 10, 11, 12, 13) for guiding the receiving means (4, 5, 6) when lifting and lowering the lifting gate (7) and with

Drive means (14, 15) for driving the receiving means (4, 5, 6) to raise and lower the lifting gate (7), characterized in that

the guide means (8, 9, 10, 11, 12, 13) for guiding the lifting gate (7) attached to the carrier device (1) and the drive means (14, 15) are provided exclusively in the underfloor shaft (2) and in that the drive means ( 14, 15) are formed by a hydraulic drive which drives a scissor element (16, 17, 18) connected to the receiving means (4, 5, 6) and to the underfloor shaft (2).

2. carrier device (1) according to claim 1, characterized in that the two limbs (20, 21) of the scissor element (16, 17, 18) fixed hydraulic drive both in the raised and in the lowered position of the receiving means (4, 5 , 6) is substantially vertical.

3. carrier device (1) according to one of the preceding claims, characterized in that the end (19) of a first leg (20) of the scissor element (16, 17, 18) with the underfloor shaft (2) and the end (21) of a second Leg (22) of the scissor element (16, 17, 18) with the receiving means (4, 5, 6) is rotatably connected and that the ends (23, 24) of a third leg (25) and a fourth leg (26) of the scissor element (16, 17, 18) are each guided by a linear ball bearing (27, 28) along guide rods.

4. carrier device (1) according to claim 3, characterized in that the third leg (25) and the fourth leg (26) of the scissor element (16, 17, 18) via a respective universal joint (KG) with the linear ball bearings (27, 28 ) are connected.

5. carrier device (1) according to one of the preceding claims, characterized in that weight relieving means (40, 41, 42, 43) are provided which the carrier device (1) together with the carrier device (1) fixed lifting gate (7) in any lowered or raised positions of the carrier device (1) hold substantially without effort by the drive means (14, 15) in levitation.

6. carrier device (1) according to one of the preceding claims, characterized in that the drive means (14, 15) for slow acceleration and slow

Braking the carrier device (1) are formed.

7. carrier device (1) according to any one of the preceding claims, characterized in that the drive means (14, 15) have a safety stop, which is designed to stop the hydraulic drive when a detector or sensor detects a dangerous situation.

8. carrier device (1) according to one of the preceding claims, characterized in that the receiving means (4, 5, 6) has a Trägerpro fil (5, 6) on which the lifting gate (7) can be pushed for attachment.

9. carrier device (1) according to claim 8, characterized in that the

Receiving means (4, 5, 6) have a screw holder (SH) to which a screw (S) is fastened, which presses a fastening element (BE) displaceable in a slot (38, 39) against the carrier profile (5, 6), to attach the lifting gate (7) slidably or floating on the carrier profile.

10. lifting gate (7), in particular garden gate, for sinking into a sub-floor shaft (2), characterized in that it is fastened to a support device (1) according to one of claims 1 to 9.

Lifting gate system for closing an entrance or closing an opening, characterized in that it comprises a lifting gate according to claim 10, which on a

Support device (1) according to one of claims 1 to 9 is attached.

12. Lift gate system according to claim 11, characterized in that pumping means (32) are provided in the underfloor shaft (2) occurred liquids from the

Pump underground shaft (2).

13. Lift gate system according to claim 12, characterized in that the pump means (32) comprise a sensor which detects incoming fluids by a resistance measurement.

14. Lift gate system according to one of claims 11 to 13, characterized in that lighting means in the lower shaft shaft (2) are provided to illuminate the lifting gate (7) in its raised position from below.