DE7215758U - Device for lifting or laying manhole covers - Google Patents

Description

Applicant:

Kurt von Gehlen

4-072 Wickrath, Bergstrasse 19

Device for lifting or laying manhole covers

The innovation relates to a device for lifting or laying manhole covers. Such devices can be found among other things Use in the construction and cleaning of sewers and cable ducts as well as in road construction.

Since up to now accidents have been frequent when lifting, putting down or laying manhole covers, e.g. crushing of hands or feet, if it would be desirable, manhole cover when lifting etc. not having to touch them by hand. It would also be beneficial if one could cut staff; for lifting etc. of manhole covers, the edge of which is usually lubricated to reduce corrosion, are currently at least two people are needed to lift or lower the lid with direct physical strength.

The object of the innovation is therefore not only to make this work easier, but also to save manpower, in addition to which the risk of accidents is to be significantly reduced. . · / I ^{ (""""

The new solution is that the device has a two-armed lever designed as a single-axis chassis The lever axis is, wherein the one lever arm has means for coupling the manhole cover and the sum lifting and operating the device, the other lever arm provided is long compared to the former.

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This can be ν \ νά ensures that the manhole cover by one person lifted, stored, etc., and this person only comes with the manhole cover when coupling the lifting device into contact. The lifting of the manhole cover is also made much easier by making use of the law of levers.

The longer lever arm of the new device is preferably angled upwards compared to the shorter lever arm, that both when lifting and when moving the coupled manhole cover the handle or the handles of the longer lever arm for a standing person in favorable height is or are. If the new device is often transported or stored to save space should, it is advantageous if the longer lever arm is detachably connected to the rest of the device. The latter can be designed in very different ways. For example, it can consist of a rod with a T-handle or two Rods each have a handle or a common handle.

According to another innovation, the short lever arm consists of a rectangular frame, one side of which acts as a lever axis laterally placed wheels is formed and the side opposite the axis of the means for coupling of the manhole cover. It is advisable to use the means corresponding to the various manhole cover designs Provide coupling. For example, a T-hook can be provided for lifting manhole covers with a central slotted hole, which can be inserted into the slotted hole and then through Turning around the longitudinal axis establishes the coupling between the new device and the manhole cover. On the other hand is a To lift manhole covers with several holes on the cover surface, e.g. on the edge of the cover, it can be useful to lift two

Sheet 3

pair of opposing L-hooks with adjustable mutual To set the distance on the lever end so that the hooks after insertion into the corresponding holes in the cover and after lifting Grasp the lid like pliers at the edges of the holes.

Hand of the schematic drawing of an embodiment further details are explained.

The drawn device consists of a rectangular frame 1, which rests on a chassis. The chassis sets consist of an axle 2 on which two (e.g. pneumatic tires) wheels 3 run. The wheelbase becomes appropriate selected only slightly larger than the diameter of the largest manhole cover to be lifted. In the exemplary embodiment is a Rectangular tube 4, which forms the rear part of the frame, Welded onto the chassis axis 2. The side parts of the frame are made of rectangular tubes, while a cylindrical one Tube 6 closes the frame at the front.

The drawn new device is provided with two different means for coupling manhole covers. First is in the middle of the front tube 6 a T-hook 7 that can be displaced along the tube and rotated around the tube arranged, which is used to couple covers that have a slotted hole only in the Witte. Second are at both ends of the tube 6 two L-hooks 8 running in opposite directions present, which are also displaceable along the frame 6 and rotatable about the tube. With the help of this hook δ can Channel covers are raised, which have slots or several holes distributed on the cover surface.

On the placed on the axis 2 rectangular tube 4- is a short, provided with a bore plug-in tube 9, in which the guide rod, which is also provided with a bore, is attached 1o can be pushed in. The insert is through

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a bolt 11 secured. The curved guide rod 1o has a T-handle 12. In one embodiment, the guide rod 1o (longer lever arm) is approx. three times as long as side 5 of the frame (shorter lever arm).

The drawn embodiment of the new device can can be operated as follows:

By pushing the guide rod Io into the insert tube 9 and the slide-in unit is secured with a bolt 11 the device is ready for use. It is driven over the duct cover 13 to be lifted or laid and with an upright Guide rod Io parked. In the case of covers with a slotted hole 14, the T-hook 7 is now pushed through aas Slotted hole 14- and turns the hook 7 by about 90 degrees. at slotted or provided with several holes 15 Kaaal covers the L-hooks 8 are guided through the holes or slots that they are under the webs between each anchor two holes or slots immovably due to their counter-rotation. By pulling down the guide rods, the manhole cover 13 is raised and can - on the device hanging - moved, laid or stored with the guide rod upright and the coupling device released will.

The track width, the wheel diameter and the hook shape can be adapted to the respective requirements within the scope of the innovation customize without further ado.

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Parts list with dimensions of an exemplary embodiment

1 rectangular frame

2 axis; Solid iron, 35 mm diameter

3 wheels; 26o mm diameter, wheel spacing 8oo mm 4- rectangular tube, 4o / 7o / 3 mm, length 65o mm

5 side panels of the frame; 4o / 4o / 3 mm, length of the lever arm 3oo mm

6 tube; 35/5 mm

7 T-hooks

8 L-hooks

9 insert tube

Guide rod; Tube 35/5 mm, length of the lever arm 1,2oo mm Bolt handle manhole cover slotted hole round holes

Claims (6)

Sheet 6 Protective Anaprüoha 1. Device for lifting or laying manhole covers, characterized in that it is a two-armed lever with as uniaxial chassis designed lever axis (2), wherein the one lever arm (1) means (7, 8) for coupling of the manhole cover (13) and the other lever arm (1o) provided for holding and actuating the device long compared to the former. 2. Apparatus according to claim 1, characterized in that the longer lever arm (1o) is angled upwards compared to the shorter lever arm (1) so that both when lifting as the handle (12) or the handles of the longer lever arm also when transporting the coupled manhole cover (13) (1o) is or are at a height that is favorable for a standing person. 3. Apparatus according to claims 1 and 2, characterized in that the longer lever arm (1o) releasably (9, 11) with the rest Part (1) of the device is connected. 4. Device according to claims 1 to 3, characterized in that that the longer lever arm (1o) consists of a rod with a T-handle (12) or two rods each with a handle. 5. Apparatus according to claim 1, characterized in that the shorter lever arm consists of a rectangular frame (1), one side of which is part of the lever axis (2) and has wheels attached to the side and its side (6) opposite the axis (2, 4) ) has the means (7, 8) for coupling the manhole cover. Sheet 7 6. Apparatus according to claims 1 to 5, characterized in that the various manhole covers accordingly Dete means are provided for coupling.