LOAD TRANSPORTATION DEVICE

Description

[0001] The invention relates to a load conveying device according to the preamble of claim 1.

[0002] A load-carrying device of the type mentioned above is known from document US 267 357 A.

[0003] Another load handling device is known from document DE 94 00 635 U1. One embodiment of this load handling device consists of a load arranged on a transport pallet, two main support elements for handling the load, and wheels arranged at the free ends of the main support elements for rolling the load. In another embodiment of this solution, the load, provided without a transport pallet, is placed on the two main support elements.

[0004] Other load-carrying devices are known from US 2005 / 254924 A1, US 2011 / 274526 A1 and US 3,667,728 A.

[0005] The invention is based on the objective of improving a load handling device of the type mentioned at the outset. In particular, a load handling device is to be created with which the load can be easily lifted (preferably lifted from a transport pallet), transported further after lifting (or lifting), and finally easily set down again (for example, on a floor console or mounting platform provided for this purpose).

[0006] This problem is solved with a load conveying device of the type mentioned at the outset by the features listed in the characterizing portion of claim 1.

[0007] According to the invention, a first and a second through-opening for receiving the first and second crossbeams is provided on the load, wherein the load is arranged between the two main support elements and the main support elements are rotatably connected to the load for lifting the load by levering the wheels underneath.

[0008] The requirement of "levering" means that the wheels are pressed against the ground by pivoting the main support elements around the load, thereby lifting the load and preferably simultaneously lifting it off the aforementioned transport pallet.

[0009] In other words, the solution according to the invention is characterized by the fact that the combination of the main support element, rotatably mounted on the load, and the wheel forms a lever for (comparatively easy) lifting of the load. As will be explained in more detail below, this solution makes it possible to lift a load, preferably delivered on a transport pallet, from the transport pallet using the load transport device and then transport it further by rolling. The load is particularly preferably a thermal device, especially a heat pump, in particular an outdoor unit of a heat pump, which is to be transported from the transport pallet to its final installation location using the load transport device.

[0010] Other advantageous embodiments of the load conveying device according to the invention are set out in the dependent claims.

[0011] For the sake of completeness, reference is made to the subsequently published document DE 10 2021 117 372 A1. However, this solution does not involve levering the wheels underneath.

[0012] The load conveying device according to the invention, including its advantageous further developments according to the dependent claims, is explained in more detail below with reference to the graphic representation of a preferred embodiment.

[0013] It shows Figure 1 shows the load transport device according to the invention in perspective during the attachment of the main support elements to the first crossbeam; Figure 2 shows the load transport device in perspective according to Figure 1 during the process of levering the wheels under and lifting the load or removing the load from the transport pallet; Figure 3 shows the load handling device in perspective according to Figure 2after the pivoting and during the attachment of the second crossbeam to the main beam elements; Figure 4 shows the load transport device in perspective according to Figure 3 during handling of the load; Figure 5 shows the load handling device in perspective according to Figure 4 when placing the load onto a support console; Figure 6 in rear view the load transport device according to Figure 4 (without load); Figure 7 as section AA the load conveying device according to Figure 6 Figure 8 shows a perspective view of the first crossbeam for the load conveying device according to the invention; and Figure 9 shows a perspective view from below of the load conveying device according to the invention. Figure 6 , however, with a main support element partially omitted in the drawing.

[0014] The load transport device shown in the figures consists, in a known manner, of a load 1, two main support elements 2 for handling the load 1, and wheels 3 arranged at the free ends of the main support elements 2 for the rolling transport of the load 1. Each wheel 3 preferably has a diameter of at least 10 cm, more preferably at least 20 cm, and most preferably 30 cm.

[0015] Regarding load 1, it is preferably provided that it is cuboid in shape with a width B, height H and depth T, wherein both the width and the height are greater than the depth (see also Figure 3The width and height are preferably more than 70 cm, while the depth is preferably less than 70 cm. As already stated at the outset, the load 1 is preferably a thermal device, in particular a heat pump, and most preferably an outdoor heat pump.

[0016] Furthermore, it is provided that the load 1 is arranged between the two main support elements 2 and that the main support elements 2 are rotatably connected to the load 1 for lifting by levering the wheels 3 underneath. Particularly preferred (but not mandatory), as already stated at the outset, is that the load 1 is arranged on a transport pallet 6 when the wheels 3 are levered underneath.

[0017] In more detail, to achieve the aforementioned levering action, it is preferably provided that a pivot axis 1.1 between the load 1 and the main support element 2 and a pivot axis 3.1 of the wheel 3 are arranged parallel to each other. It is further preferably provided that the distance between the two pivot axes 1.1, 3.1 is at least 5 cm, preferably at least 10 cm. Furthermore, with particular reference to Figure 1 It is particularly preferred that a holding device 3.2 forming a lever for levering the wheel 3 is arranged at a free end of the main support element 2. The said axes of rotation 1.1, 3.1 are preferably (see also Figure 9 ) at opposite ends of the holding device 3.2. Furthermore, it is preferably provided that the holding device 3.2 is made of sheet metal, preferably of two angled sheet metal pieces that receive the wheel 3 between them.

[0018] Furthermore, it is preferably provided that the center of gravity of the load 1 is located as vertically as possible above the axis of rotation 1.1 when the load transport device is moved. The requirement "as far as possible" takes into account that deviations are of course acceptable or conceivable, provided they are not too large; i.e., preferably a lateral displacement of the center of gravity from the axis of rotation 1.1 should not exceed 30 cm, and most preferably not exceed 20 cm.

[0019] Furthermore, in the solution according to the invention, a first, second, and third crossbeam 4.1, 4.2, 4.3 are provided for connecting the two main beam elements 2. It is also preferably provided that the main beam elements 2 and optionally the first, second, and / or third crossbeam 4.1, 4.2, 4.3 are arranged at right angles to each other. It is also preferably provided that optionally the first, second, and / or third crossbeam 4.1, 4.2, 4.3 is arranged parallel to the direction of depth extension (see above) of the load 1 during load transport.

[0020] In particular with reference to Figure 2It is further preferably provided that, in order to achieve pivotability (with the second crossbeam 4.2 not mounted), the distance between the first and third crossbeams 4.1, 4.3 is greater than the length of a diagonal of an area defined by the width and height of the load 1. It is also preferably provided that the main beam element 2 is formed from a first straight section 2.1 connected to the first and second crossbeams 4.1, 4.2 and from a second (also) straight section 2.2 connected to the third crossbeam 4.3. With reference to Figure 7 It is particularly preferred that the two sections 2.1, 2.2 are arranged at an angle to each other, preferably between 1° and 45°, and particularly preferably 30°.

[0021] Furthermore, it is preferably provided that the main support element 2 is connected to the first crossbeam 4.1 at its end equipped with the wheel 3. It is also preferably provided that the two main support elements 2 are rotatably connected to the first crossbeam 4.1. In addition, it is preferably provided that the first crossbeam 4.1 is connected to the load 1 in a rotationally fixed manner.

[0022] To prevent the load 1 from detaching from the main support elements 2 during handling, it is further preferably provided that a connecting device 5 is arranged on the main support element 2 and on the first crossbeam 4.1, which allows these two parts to be separated from each other only in a single relative position (see Figure 1 , i.e., before levering) these two parts are designed to allow movement relative to each other. Looking at this in more detail, it is particularly preferred that the following be provided for this purpose (see in particular the Figures 8 and 9) that the connecting device 5 has a mushroom head 5.1 preferably arranged on the first crossbeam 4.1 and a guide slot 5.2 preferably arranged on the main support element 2 with a removal point 5.3 for the mushroom head (in the position according to Figure 1 ) includes.

[0023] Essential to the load conveying device according to the invention is that a first and a second through-opening 1.10, 1.20 are provided on the load 1 for receiving the first and second crossbeams 4.1, 4.2, respectively. The distance between the first and second crossbeams 4.1, 4.2 is preferably smaller than the width of the load 1. Furthermore, it is preferably provided that the first and / or second through-opening 1.10, 1.20 optionally forms an elongated support foot for the load 1, or that the through-opening 1.10, 1.20 is part of said support foot. It is also preferably provided that the (or at least one, preferably all) crossbeams 4.1, 4.2, 4.3 project beyond the support foot on both sides and are wider than the load 1. Furthermore, it is preferably provided that the support foot is formed as part of the load 1.

[0024] In particular with reference to Figure 8It is further preferably provided that the first crossbeam 4.1 has a cuboid section 4.1.1 and cylindrical sections 4.1.2 arranged on both sides thereof. It is also preferably provided that the cuboid section 4.1.1 is form-fitting to the through-opening 1.10, 1.20 at the load 1, i.e., that the opening has a rectangular cross-section. Furthermore, it is preferably provided that the cylindrical sections 4.1.2 are connected to the main beam elements 2.

[0025] For particularly good handling of the load transport device according to the invention, it is further preferred that the main support element 2 is connected to the third cross member 4.3 at its end facing away from the wheel 3. It is also preferred that the third cross member 4.3 is designed as a handle for handling the load 1.

[0026] With regard to the choice of material, it is also preferably provided that optionally the main support element 2, at least a part of the first, the second and / or the third crossbeam 4.1, 4.2, 4.3 are formed from a metallic tube, preferably a square tube.

[0027] The load conveying device according to the invention preferably functions as follows: In a first step (see Figure 1 ) the first crossbeam 4.1 is inserted through the first through-opening 1.10.

[0028] Then the two main support elements 2 are attached to both sides of the first crossbeam 4.1 and thus to the load 1. Additionally, the third crossbeam 4.3 is connected to the two main support elements 2, acting as a handle on the side facing away from the wheels. In the next step, the wheels 3 are levered under the load 1 by pivoting the main support elements 2 (see [reference]). Figure 2 The pivoting is carried out to the extent that (see here). Figure 3), so that the second crossbeam 4.2 can then be pushed through the second passage opening 1.20 in a position above the two main beam elements 2. After the second crossbeam 4.2 is attached to the main beam elements 2, the load transport device is ready for operation (see Figure 4 ), i.e. the load 1 can now be easily steered (because there are only two wheels 3) away from the transport pallet 6 and, for example, moved to an assembly base (see Figure 5 ) are moved. The placement on the aforementioned base is carried out accordingly in reverse order, i.e., by appropriately pivoting the main support elements 2, the load 1 is set down so that the wheels 3 can rotate freely again and the main support elements 2 can be released from the load 1. Reference symbol list

[0029] 1 Load 1.1 Pivot axis 1.10 Through opening 1.20 Through opening 2 Main support element 2.1 First section 2.2 Second section 3 Wheel 3.1 Pivot axis 3.2 Holding device 4.1 First crossbeam 4.1.1 Cuboid section 4.1.2 Cylindrical section 4.2 Second crossbeam 4.3 Third crossbeam 5 Connecting device 5.1 Mushroom head 5.2 Guide slot 5.3 Removal point 6 Transport pallet Width Height Depth

Claims

1. A load conveying device, comprising a load (1), two main carrier members (2) for handling the load (1) and wheels (3) arranged at free ends of the main carrier members (2) for the rolling conveyance of the load (1), wherein the load (1) is arranged between the two main carrier members (2) and wherein the main carrier members (2) are formed rotatably connected to the load (1) by under-levering the wheels (3) for lifting the load (1), wherein a first, second and third cross member (4.1, 4.2, 4.3) is provided for connecting the two main carrier members (2), characterised in that a first and a second through-opening (1.10, 1.20) is provided on the load (1) for receiving the first or second cross member (4.1, 4.2).

2. A load conveying device according to claim 1, characterised in that a rotation axis (1.1) between the load (1) and the main carrier member (2) and a rotation axis (3.1) of the wheel (3) are arranged in parallel spaced apart from one another.

3. The load conveying device according to claim 1 or 2, characterised in that a holding device (3.2) for the wheel (3) forming a lever serving for under-levering is arranged at a free end of the main carrier member (2).

4. The load conveying device according to any one of claims 1 to 3, characterised in that the main carrier member (2) is formed connected to the first cross member (4.1) at its end provided with the wheel (3)5. The load conveying device according to any one of claims 1 to 4, characterised in that the two main carrier members (2) are formed connected rotatably to the first cross member (4.1).

6. The load conveying device according to any one of claims 1 to 5, characterised in that the first cross member (4.1) is formed connected rotationally fixed to the load (1).

7. The load conveying device according to any one of claims 1 to 6, characterised in that a connecting device (5) is arranged on the main carrier member (2) and on the first cross member (4.1), which is designed to permit a separation of these two parts from one another only in a single relative position of these two parts to one another.

8. The load conveying device according to claim 7, characterised in that the connecting device (5) comprises a mushroom head (5.1) and a guide slot (5.2) with a withdrawal point (5.3) for the mushroom head.

9. The load conveying device according to any one of claims 1 to 8, characterised in that the main carrier member (2) at its end facing away from the wheel (3) is formed connected to the third cross member (4.3).

10. The load conveying device according to any one of claims 1 to 9, characterised in that the third cross member (4.3) is designed as a handle for handling the load (1).

11. The load conveying device according to any one of claims 1 to 10, characterised in that the load (1) is designed cuboid with a width, height and depth, wherein both the width and the height are each greater than the depth.

12. The load conveying device according to claim 11, characterised in that a distance between the first and third cross members (4.1, 4.3) is greater than a length of a diagonal of an area defined by the width and height of the load (1) in order to implement a swivelling-over.

13. The load conveying device according to any one of claims 1 to 12, characterised in that the load (1) is arranged on a transport pallet (6) when the wheels (3) are under-levered.