SU850305A1 - Flask suspended tilter - Google Patents

Description

(54) SUSPENDED HANDLER OF OPOK

one

The invention relates to the mechanization of hoisting-and-transport operations and the molding of flasks in the manufacture of casting molds and can be applied in foundry shops in various areas of mechanical engineering, in which the flasks are transported and turned-on with other lifting cranes as well as in other industrial areas where turning is required. .180 pivot cargo.

A motorized flask turner is known, comprising a traverse, sprockets with chain slings slung over them and a motor drive for rotating the sprockets ILj.

The power supply to the electric drive requires the supply of electricity to the tilter, which is associated with known difficulties.

If the electrical supply is prevented from being connected by means of hinged cables, connected to the shop switchboard, a special re-equipment of the crane is required to supply power from its electrical circuit to the tilter, and general-purpose cranes with power supply from them to the hinged devices do not release. In addition, the overhead tilter is a replaceable load-carrying device and, when replaced with another, requires the involvement of an electrician to connect and disconnect the power, which reduces the performance of the crane.

Similar deficiencies related to the presence of an electric drive, possessions and other known suspended

to tilters of flasks, including suspension tilter of flasks of the company Stolz, Germany pj, load-carrying bar.

Closest to the proposed lifting beam for cranes,

IS works according to the principle of using the own weight of a bundle of logs. To rotate it on the weight at a given angle. It contains two beams, two hydraulic cylinders interconnected by 20 oil lines with two throttles, as well as a rack-and-pinion gear pj.

Claims (3)

The disadvantage of this traverse is that it can only rotate the load around the vertical axis and is not suitable for turning the flasks around the horizontal axis. In addition, in the traverse, the speed of rotation during operation is not regulated. 30. The purpose of the invention is to provide mechanized tilting of the flasks around the horizontal axis under the action of its own weight without using energy from the outside, as well as increasing productivity and safety of tilting provided that the tilter works autonomously at any point of flight and the ability to control the speed of turning The tilter is made in the form of a movable traverse moving between two fixed plates connected to the upper plate by springs, from the bottom - toothed-rack and pinion gears and hydraulic cylinders, both cavities of which are interconnected via a throttle remotely controlled by a flexible shaft, the parallelism of movement of the traverse being ensured by the presence of bushings on it, in which the columns fixed on the lower plate enter, and the upper and the bottom plates are interconnected by rods. FIG. 1 shows the proposed tilter, general view; in fig. 2, section A-A in FIG. 1 | in fig. 3 a section B-B in FIG. one; in fig. 4 is a diagram of the suspension of the flask on the positioner in FIG. 5 - scheme of operation of the tilter in successive positions, (and before the beginning of turning-over, b - in the process of turning-over, c - at the end of turning-over). Mezhlu two fixed plates, the upper 1 and lower 2 moves the yoke 1 (Fig. 1, 2 and 3), to the upper plate 1 is fixed earring 4, p. by means of which the tilter is suspended from the hook of the load-lifting cr. Plates 1 and 2 are connected between the assemblies with the help of four tons of grams 5. A hydraulic cylinder is mounted on the bottom plate 2 for toothed rails 7. The hydraulic cylinder rod 8 and bearing supports 9 shaft 10 are fixed on the yoke 3. Gears 11 and chain sprockets are mounted on shaft 10 12. Centering the yoke 3 when moving it relative to the bottom plate 2 is carried out with the help of two guide columns 13, sliding in the sleeves 14 mounted on the yoke 3. The top plate 1 and the yoke 3 are connected by tension springs 15. Above (upper) and podpirshneva (lower n) cavity hydrots The lindra 6 is connected by the oil pipe 16 through the regulating choke 17, which is controlled from the floor by means of a flexible shaft 18. Through endless sprockets 12 endless chain slings 19 are thrown, which are attached to the flask 20, and the hub terminal 21. The tilter works following . The choke 17 is set to the Closed position with the help of a flexible shaft (Fig. 5a). On the tspenyi slings 19 is suspended for the pins 21 of the flask 20 (figure 4). Crane flask raised to a height sufficient to carry out the process of casting. Then, by turning the flexible shaft 18, the throttle 17 is opened (Fig. 5b). Under the action of the weight of the flask 20, the yoke 3 goes down. The piston of the hydraulic cylinder 6 under the action of the rod 8 displaces oil from the lower cavity of the hydraulic cylinder into the upper one. The gears 11 are driven down along the toothed racks 7, transmitting through the shaft 10 rotation sprockets 12 mounted on the tongues, which move the pivots 21 of the flasks 20 through the chain slings 19 and the springs 15 are stretched. When gear 11, lowering, make a turn of 180, the process of turning will be over. Next, the throttle 17 is closed using a flexible shaft 18 (Fig. 5c), as a result of which the overflow of oil from the lower cavity of the hydraulic cylinder to the upper one is stopped, which means that the yoke 3 is also moved down and the shaft 10 is turned. traverse. The re-edged caldron is lowered onto the floor of the workshop, and the straps 19 are removed from its trunnions 21. Then the throttle 17 is set to the Open position, and the springs 15, stretched in the process of turning, draw the yoke 3 upwards. The oil from the upper cavity of the hydraulic cylinder b is expelled through the open throttle 17 again into the lower cavity. The gears 11 rolls along the rails 7 in the opposite direction, turning the shaft 10 with the sprockets 12 to their original position. At the end of this process, all the moving parts of the turntable return to their original position shown in fig. 5a .. Then, the throttle 17 is again set to the Closed position, and the tilter is ready for turning-over following the flask. ... Thus, no drive mechanism that consumes external energy in the tilter of the proposed design is required. By varying the opening angle of the throttles, it is possible to adjust the speed of operation during certain periods of turning, for example, to increase the speed of return or to slow down the process of turning through with maximum acceleration from the unbalanced mass of the half-mold, etc. Due to the mechanization of the process of turning, the working conditions of molders are improved and energy is saved, and consequently the cost of turning. Claims 1. Suspended tilter troughs, supporting the traverse with sprockets at the ends, chain slings, thrown over the sprockets, rack-and-pinion pair, kinematically connected with a piston drive, about t and l and houad and with the fact that In order to ensure the turning of the flasks around the horizontal axis under the action of its own weight and to improve the conditions of non-obstruction, it is equipped with rigidly connected lower and upper plates, and the traverse located between them is made movable and connected to the upper plate by springs, and with the lower tooth ato-rack and pinion and piston actuator. 2. The tilter according to claim 1, of which is 1C and the fact that the two cavities of the hydraulic cylinder are interconnected via a throttle connected to the remote control. 3. Tilter on PP. 1 and 2, that is, with the fact that the bottom plate is equipped with directional columns, a. traverse - centering bushings. Sources of information taken into account in the examination 1. USSR Copyright Certificate 567549, B 22 D 33/02, 1975. 2. Referential Magazine Technologists and Foundry Equipment, 1976, 1, abstract 1G176. 3. Authors certificate of the USSR 253334, cl. In 66 C 1/68, 1967.