Manufacturer of road maintenance machines for 35 years.

Grouting the joints with large slopes of up to approx. 30 °.

Safe and clean solution. Grouting the joints on large slopes.

End of the manual work with joint casting in landfill construction: Richard Rupprecht GmbH from Neunkirchen am Sand in Bavaria developed a special device for a customer.

When sealing landfills, the connecting flanks of the asphalt layers that are paved with a paver must be sealed or sealed with hot casting compound before the next layer is laid. All this up to an incline of about 30 °.

A stationary cooker is usually used for this, from which the worker fills the hot material into a bucket or potting can and uses it to manually seal the seams.

The problems

This procedure has some major disadvantages: in addition to the dangerous working environment, which clearly shows a gradient of up to 30 °, and the manual processing of a mass of up to 180 ° C, this is neither effective nor the quality satisfactory. Because, on the one hand, only a few meters can be potted before the bucket / potting can be refilled. On the other hand, the result is often unsatisfactory because the mass is distributed without a slide and not evenly.

The idea

The aim was to develop a machine that could be leveled in the entire working environment and operated on an incline of up to 30 °. The solution was a potting machine on a crawler track, which has a radio remote control and is equipped with a hot potting cooker.

The machine operating under the name HLK-120 RW-R was designed in such a way that the 120 l hot-pouring cooker can be rotated into 3 positions. This means that the outlet can be directed either to the right, left or to the front. The grouting takes place via a rotatable grouting unit, which rests on the asphalt surface and always adapts to the ground via a height-adjustable support wheel.

Well thought-out details

The whole frame was built on a very massive and powerful crawler chassis. When driving the HLK-120 RW-R, the entire structure is always leveled horizontally. This is done either automatically or manually by means of the radio remote control via a very finely reacting spindle drive.

It is possible to operate each drive chain individually or both together. Two driving speeds are also provided.

A potting pump unit is available as an option, which gives the customer the option of applying the hot potting compound via a potting hose.

Incidentally, even without the chassis, the HLK-120 RW-R with its 120 l cooker is the smallest joint sealing unit with a sealing pump that is available on the market.

Special mechanical engineering

Richard Rupprecht GmbH has specialized in the development and construction of road maintenance machines for more than 35 years. Through the complete "in-house" production (design/development - production & assembly - sales) it is possible for us to: To develop machines for you according to your needs.