Abstract:
An installation for treating articles, especially vehicle bodies, comprises at least one treatment zone, in particular a bath containing a treatment liquid, into which the articles are introduced. The articles are conveyed through the installation in a continuous or intermittent translational movement. To this end, the installation comprises at least two transport carriages combined to form a pair, which in turn each comprise a running gear and at least one swivel arm, which is connected to the respective running gear so as to be swivellable about a first pivot pin and with which a supporting structure for the article to be treated is connected so as to be swivellable about a second pivot pin. The unit includes the two transport carriages effecting a correlated movement actually has six degrees of freedom of motion, wherein drives are provided for at least three of these degrees of freedom of motion.
Abstract:
A rack serving unit comprises a carriage which may be moved along a rack aisle on substantially horizontal carrying rails. Carried along by the carriage there is a lifting platform which is suspended on the carriage by way of at least two traction mechanisms, preferably cables, and may be moved in the vertical direction with respect to the carriage. To stabilise the lifting platform against undesired lateral movements, a stabilising device is provided which comprises at least one guide element extending substantially horizontally parallel to the translatory movement path of the lifting platform. This guide element is in constant engagement with the lifting platform in such a way that the position of this latter in the direction of the translatory movement is constantly defined. Provided at both ends of the translatory movement path, there is a lifting device for each guide element by means of which the guide element may be moved synchronously with the lifting platform in the vertical direction.
Abstract:
A lifting device (1) for lifting and lowering a load comprises a supporting structure (2), which comprises a bottom structure (3) capable of being fastened to a room floor and a top structure (21) connected to the bottom structure (3) and arranged at a vertical distance thereabove. A lifting drum (28) and a drive (30), by which the lifting drum (28) can be set in rotation in both directions, are arranged in the vicinity of the bottom structure (3). At least one flexible traction means (32 to 37) is secured by one end to the lifting drum (28), has a section running from the lifting drum (28) to the top structure (21) and is led over at least one deflection roller (38, 39, 41, 42, 43, 53) rotatably mounted on the top structure (21). At its other end, a holding arrangement (40) for the load is provided. Thus, only those elements which do not normally need any maintenance or repair at all are to be provided on the top structure (21), which is relatively difficult to get at. Elements which may occasionally require maintenance or repair, in particular the lifting drum (28) and the drive (30), are easily accessible in the vicinity of the bottom structure (3).
Abstract:
A storage and retrieval unit comprises in a known manner a supporting carriage which is movable along a rack aisle on at least one substantially horizontal supporting rail. A lifting platform intended for receiving storage items is taken along by the supporting carriage in the horizontal movement and can be moved relative to it in the vertical direction with the aid of a lifting apparatus comprising at least two traction means on which the lifting platform is suspended. In order to prevent the lifting platform from swinging out in the lateral direction, a stabilising device is provided. The latter comprises a stabilising carriage which is movable by means of its own drive along at least one guide rail running at a vertical distance from and parallel to the supporting rail. A substantially rigid connecting structure having a horizontal extension component is articulated both on the lifting platform and on the stabilising carriage. The horizontal distance between the lifting platform and the stabilising carriage is changed by means of a control system, by corresponding movement of the stabilising carriage, in such a way that the lifting platform can perform only the desired, in particular vertical, movement relative to the supporting carriage. This storage and retrieval unit has only very small masses which can oscillate and are to be accelerated.
Abstract:
The invention relates to a method for determining the elastic deformation of components, especially parallel kinematic devices, under a load. Said method is characterised in that the geometry of the articulation points on the fixed platform (9) and the mobile platform (10) is determined; the replacement spring constants of the actuators (K1, K2, K3) and the replacement spring constants of the bearings are determined; the theoretical length of the actuators is determined; the theoretical position of all of the articulation points in the area is determined therefrom; the forces acting on the individual actuators are determined from said geometry and the load (F); and the real geometrical image and thus the real position of the mobile platform are determined from said forces. The real position is compared with the calculated theoretical position and is brought into line by the actuation of corresponding actuators.
Abstract:
The invention relates to a parallel kinematic device with a fixed platform and with a moving platform based on rods (1, 11, 21, 41) and on actuators, at least one actuator (A, A1, A2) is provided in the form of a rod of a constant length with a foot (6, 16, 26, 46) that can move relative to the fixed platform and, with a rod of a constant length and fixed foot (1, 11, 21, 41) on the fixed platform, comprises a common head (2, 12, 22, 42) on the moving platform, and the retaining force remains largely independent of the angular position of the kinematic. The displaceable foot (6, 16, 26, 46) is guided along an arc of a circle by a steering rod (7, 17, 27, 49) with a fixed foot on the first platform, with which is connected in an articulated manner and it acts upon a point of application (10, 40) connected in a fixed manner thereto via a force introduction element (9, 49).
Abstract:
The invention relates to a hoist device, in particular, for the automobile industry, comprising an upper frame (1) and a lower frame (2), arranged below the above, whereby the lower frame (2) is held on the upper frame (1) by means of at least three essentially vertically-running ties (3) and at least four tensioning means (4), at an angle to the vertical, such as to be vertically displaced by means of powering the ties (3) and the tensioning means (4). Pairs of tensioning means (4) at least approximately engage at a common point (5) on the lower frame (2). According to the invention, the pivoting may be simplified and improved, whereby the ends of the two tensioning means (4) pass over a joint (14) connected to the lower frame (2), permitting the rotation of the lower frame (2) relative to the tensioning means (4) about a rotational axis (15), given by both engagement points (5) of the tensioning cables (4) on the lower frame (2).
Abstract:
A lifting apparatus for lifting and lowering a load comprises, in a known manner, a lifting drum and a drive, by which the lifting drum can be set in rotation in both directions. Serving as the pulling mechanisms are bands which are secured by one end to the lifting drum and at the other end carry a holding device for the load. At least two bands can be wound up on the lifting drum, by rotation of the latter, with accurate tracking and so as to lie one above the other, in such a way that all the turns of the bands lie one above the other. This lifting apparatus combines a high carrying capacity, high precision in the guidance of the bands and a high level of operating safety.
Abstract:
A device for turning an object about an axis which is stationary related to the device, the device including two manipulator modules, each provided with a base part, to which, rotatable on a base axis, an upper arm is linked, to which, rotatable on an arm axis, a lower arm is linked, which features an end axis. The base axis, the arm axis and the end axis of each manipulator module intersect with each other respectively in one intersection point, with their connecting line defining the swivel axis. A connecting piece is mounted between the two lower arms so that it is rotatable on the two end axes and forms and/or provides an object holder for the object to be turned/swiveled.
Abstract:
A lifting device for raising and lowering a load comprises in a known manner a lifting drum that can be driven in both directions of rotation, as well as at least one belt serving as traction mechanism that is secured to one end of the lifting drum and carries at the other end a holding device for the load. The belt can be wound on the lifting drum by rotation of the latter, in such a way that the windings come to lie on top of one another. In order to reduce repeated mechanical stress reversals at the step that is formed by the end of the belt secured to the circumferential wall of the lifting drum, at least one spacing element is arranged on the circumferential wall of the lifting drum, against which element rests the first winding of the belt.