The joint-balancing manipulator SBM-250M has, in comparison with the SBM-150M and SBM-175M, a reinforced structure designed to provide a greater load capacity of 250kg. The design of the manipulator is similar to the design of the SBM-150M and generally consists of a drive head mounted on a supporting structure using a pivot device that rotates the head 360 degrees. The drive head has a hinged boom consisting of a shoulder and an arm. At the end of the arm, the head of the grip is installed. The gripper head can rotate around a vertical axis. The handle mounted on the head of the gripper is used to control the vertical movement of the gripper head, as well as to transfer the efforts of the worker to the load and boom during the horizontal movement of the gripper head. There is a clip on the head of the gripper, which serves to secure replaceable load-grabbing devices. A lifting mechanism is mounted on the drive head, consisting of a gear motor and a rack-and-pinion device that provides vertical movement of the grab head with the load. The vertical movement speed is controlled by the worker when the control handle is moved. When the long end of the handle is turned up, the load also begins to move up, when the long end of the handle is turned down, the load also begins to move down. The speed of movement of the load depends on the angle of rotation of the handle. The lever system of the manipulator boom is balanced using a spring device and is designed so that the movement of the grip head in the radial direction to and from the pivot device occurs horizontally (using the mechanism of the hinge-lever pantograph). Therefore, the movement of cargo in the horizontal plane is carried out with minimal effort. The weight of the cargo is not felt and it is only necessary to overcome the inertia of the cargo, depending on its mass and size. When the control handle is released by the worker, the handle is set to a neutral horizontal position under the action of a spring. The load stops and is held by the lifting mechanism for as long as necessary. There is no radial and tangential movement of the grip head, and the load remains at the rear point of the space. The support-rotary device and the gripper head are assembled on high-quality rolling bearings, therefore, the rotation of the load around the axis of the gripper head and the rotation of the boom with the load around the axis of the support-rotary device require minimal effort. The manipulator allows you to service the zone.
The electric drive of the lifting mechanism of the manipulator head is made on a modern element base with the use of a gear motor with an electromagnetic brake and a frequency converter, which makes it possible to smoothly regulate the speed of vertical movements and guarantees reliable operation.
The manipulator has way switches for vertical movement height.
The manipulator is equipped with a light indication of the operating modes of the frequency converter, overload of the manipulator, connection to the network. To ensure safety, the manipulator is equipped with an "Accident" button placed on the arm, not far from the suspension device. When the button is pressed, the load stops at the height at which it is at the moment of pressing the button. The manipulator is also equipped with a self-diagnosis system of limit switches and an overload protection system. All this makes working with the manipulator not only convenient, but also safe.
Cargo movement can be controlled even with one hand on the control handle. Training to work with the manipulator takes several hours.
Simultaneous use of several manipulators with long loads (rails, beams, pipes) is possible.
The attachment of the gripping device on the head of the gripper is rigid, therefore it is possible to fix the load on the console (with a slight decrease in load capacity), which makes it possible to use the manipulator for servicing suspended containers, machine tools, presses, furnaces and other technological and transport devices with parts protruding from above, overlapping the working area. The use of electric cables, crane beams, overhead cranes having a standard cable suspension of the hook cage is difficult or impossible in these cases.
Manipulators can be equipped with various types of lifting devices. The change of lifting devices does not require special skills or tools and is carried out by the operator in a few minutes.