Crawler crane RDK-40

The boom, self-propelled, full-slewing crawler crane RDK-40 is designed for loading and unloading, construction and installation work, primarily at stationary sites without frequent relocations over long distances. The simplicity and reliability of the design, as well as the advantages of using a crawler chassis, allow this crane to be used in difficult conditions on unprepared sites. The drive of the crawler undercarriage and all crane mechanisms is hydraulic. Each mechanism has an individual drive with independent control. The hydraulic system provides smooth control of all mechanisms and a wide range of speed control of working operations, making it possible to simultaneously combine several operations. The design uses imported and domestic units and components, the high reliability of which has been confirmed by many years of use in hydraulic machines of various types. The 1st distinctive design feature of this crane model is that the chassis is made with telescopic crawler trucks. This allows for a small overall size during transportation and an increased size of the support area when performing crane operations. The telescoping mechanism is well-developed and meets the innovative world-class solutions. Due to the specific design of the crawler chassis and the developed support contour, which forms the crawler bogies in the working position, the crane has a single load characteristic in the entire 360-degree sector and can move with a load on the hook, the mass of which is 10 tons (on the Sanperano crawler track) and 32 tons (on the crawler track of our own production). The 2nd important feature of this crane is the device of the crane portals. Their design is thought out in such a way that when assembling and disassembling the crane at the construction site, there is no need for re-rope: once done, it ensures the transfer of the crane from the transport position to the working position and back. In addition, with the help of the rear (small) portal, counterweights are hung. Thus, the crane autonomously, without the involvement of additional lifting equipment, provides its own assembly and disassembly. The 3rd feature is the rotating part of the crane, which is optimized both in terms of design and operational convenience. Structurally, it is made in such a way that it has high volumetric rigidity, due to which long-term operation of the mechanisms built into it without distortions and damage is guaranteed. At the same time, the layout of the rotating part provides easy access to all crane mechanisms and hydraulic system elements for inspection and maintenance. Another undeniable advantage of this crane model is its low transport height. Even placed on a trailer with a typical platform height of up to 900 mm from the level of the supporting surface, it fits into the transport dimensions in height up to 4 m. Similarly, the length of the crane is determined from the conditions of ease of transportation on standard trailers. The crane has a main boom of lattice construction 15 m long, which is extended to 40 m by means of quick-detachable insert sections 5 or 10 m long. The use of high-strength steels ensures, with the adopted dimensions of the boom elements, its sufficient strength when working with loads even on a site with a slope of 3 degrees. To expand the scope of use and increase the size of the under-boom space, rigid jibs 1 m, 5 m or 10 m long can be used. In this case, the crane can work with two cargo winches, one of which is used on the main boom, and the second on the jib. The crane's load-height characteristics have been raised to a new height and significantly exceed the indicators of domestic analogues at any point in the working area. A set of modern devices and instruments ensures safe operation of the crane.