SU1384481A1 - Apparatus for controlling actuator of telescopic grip of rack piler crane - Google Patents

Abstract

This invention relates to a lifting and transport machinery. The aim of the invention is to increase reliability. The device comprises a rod 1 mounted in guides 2 on a movable platform 3 of a telescopic gripper. A shunt 4 is fixed on the rod 1, which has the ability, when extending the movable platform 3, to interact with the sensor 5 mounted on the movable platform 6 of the telescopic gripper and included in the telescopic gripper drive control circuit. On the movable platform 3 on the hinge 7 a lever 8 is installed with the ability to interact with the cam 9. The rod 1 is equipped with a spring 10 mounted on the movable platform 3. Copier 9 is filled in the form of a bar and equipped with springs 13, which press it against the stops 12. On the movable platform 3, an additional shunt 14 is installed with the possibility of interaction with an additional sensor 15 fixed on the fixed platform 6 and included in the telescopic gripping drive control circuit, and an adjustable stop 16 for the upper arm, lever 8.4 Il. with (L

Description

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The invention relates to devices for controlling the drives of the telescopic grips of the rack stacker cranes.

The purpose of the invention is to increase reliability.

Figure 1 schematically presents the proposed device, the initial position; 2 shows the position of the elements of the device in the absence of obstacles; fig.Z - the same, in the presence of an obstacle; figure 4 - view And figure 1.

The device contains fig.G-4) rod 1 mounted in guides

2 on a movable platform 3 telescopic grip. The shunt 4 is fixed on the rod 1, which has the possibility of moving the mobile platform

3 to interact with the sensor 5 mounted on the fixed platform 6 of the telescopic gripper and included in the telescopic gripper drive control circuit (not shown. On the movable platform 3, the hinge 7 has a lever 8 that can interact with the copier

9, placed on a fixed platform 6, and with its shoulder with a rod 1 The latter is equipped with a spring

10 mounted on a movable platform 3. Copier 9 is made in the form of a bar movable in a vertical direction relative to axis 11 and stops 12. Copier 9 is equipped with springs 13 which press it against abutments 12. Stage 8 is installed with the possibility of the lower arm interacting with the upper arm and the front side of the copier 9

when moving the mobile platform 3.,

The distance between the cam 9 in the extreme upper position and the geometric axis of the hinge 7 of the lever 8 is less than the length of the lower arm of the lever 8, and for lever 8, the upper arm is larger than the lower one. On the mobile platform 3, an additional shunt 14 is installed with the possibility of interaction with an additional sensor 15 fixed on the fixed platform 6 and included in the drive-telescopic gripping control circuit, and an adjustable stop 16 for the upper arm of the lever 8. The distance between the geometric axis of the shunt 4 the extreme extended position of the rod I and the geometrical axis of the additional shunt 14 is equal to the distance between

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; Mostly (sensors 5 and 15 axes). Sensors 5 and 15 are connected in a relay. The control circuit of the telescopic drive drive is sequential, and in a circuit using logic elements, they are connected to the inputs of the AND logic element, providing a conjunction of signals in both cases. The telescopic gripper moves the load 17, mounted, for example, on the beam 18 of the rack.

Shunts 4 and 14 can be made of different lengths (Fig. 4), and sensors 5 and 15 are installed at different distances from the fixed platform 6, respectively. In the initial position (Fig. 1), the rod 1 is pressed by the spring IO to the upper arm of the lever 8, which in turn is pressed against the stop 16. The rod 1 does not protrude beyond the dimensions of the movable platform 3. The lower arm of the lever 8 interacts with the left end of the copier 9, which is under the extreme upper position under the influence of the springs 13. Shunts 4 and 14 do not affect sensors 5 and 15.

In the absence of an obstacle, the device works as follows.

When the movable platform 3 extends to the right, the lever 8, resting with its lower shoulder on the left end of the copier .9, turns on the hinge 7 and with its upper arm moves the rod beyond the envelope of the movable platform 3. With the further extension of the movable platform 3, the lever 8 turns to such a position that begins to slide its lower shoulder over the top. the copier side 9. The distance between the geometrical axes of the shunts 4 and 14 becomes equal to the distance between the same axes of the sensors 5 and 15. The shunts 4 and 14 (Fig. 2) simultaneously interact with the sensors 5 and 15, conjunction. the signals of which are informed by the telescopic drive control system about the absence of an obstacle and the possibility of further advancing the mobile platform 3. At the same time, the conjunction of signals also indicates that the rod 1 has moved to its extreme right position, the shunts 4 and 14 and other elements of the device are in good condition. Upon further extension, the lever 8 comes off the copier 9 and the spring 10 returns the rod 1 to its original position, pressing

while the upper arm of the lever 8 to the stop 16. When the movable platform 3 returns to its original position, the lower arm of the lever 8 pushes the copier 9 down, moving along its upper part.

In the presence of an obstacle, the device operates as follows.

At the beginning of the extension of the mobile platform 3 to the right, the elements of the device function similarly to the first case. Meeting on the way the load 17 (obstacle), the rod 1 stops in its movement, and the movable platform 3 continues its movement to the right. In this case, the distance between the geometrical axes of the shunts 4 and 14 becomes less than the distance between the analogous axes of the sensors 5 and 15. Figure 8 (Fig. 3), turning around the hinge 7, with its lower arm acts on the copier 9, moving it down . The mobile platform extends to the right before the interaction of the shunt 1 4 with the sensor 15. The presence of a signal only from the sensor I5 indicates that there is an obstacle in the path of the moving platform 3 (the load 17 f and the mobile platform returns to its original position. Signals from the sensors 5 and 15 are also absent in case of failure of shunts 4 and 14 or other elements of the device.Thus, the lack of a conjunction of signals from sensors 5 and 15 informs the control system of the telescopic gripping drive both about the presence of an obstacle and a breakdown. e shunts 4 and 14 or other elements of the device.

Claims (1)

Invention Formula A device for controlling the drive of the telescopic gripping of the rack stacker crane, comprising a rod facing one end towards the rack cell and mounted in horizontal guides on MOBILE telescopic gripping platform, a shunt mounted on the opposite end of the rod with the ability to interact with a sensor mounted on a fixed telescopic gripper platform and included in the drive control circuit of the latter, a lever hinged on a movable platform with the possibility of its lower shoulders interacting with a copier placed on stationary platform, and the upper arm with a rod, about the t he and the th e so that, in order to understand the reliability, the copier is made in the form in the vertical direction of the bar, the lever is installed with the possibility of the lower arm interacting with the upper longitudinal and face sides of the bar, on the movable the platform has an emphasis on interaction with the upper arm of the lever and an additional shunt, and on a fixed platform with the possibility of interaction with the latter — an additional The sensor is included in the drive control circuit, with the sensors mounted at a distance between their axes equal to the distance between the axis of the first shunt in its extreme open position and the axis of the second shunt, and the rod is spring-loaded in the longitudinal direction. 1Z3 Type A Fsh.Z G8 Phi2. VNShShI Order 1370/13 Circulation Z87 Random polygons pr-tie, Uzhgorod, st. Project, 4 Subscription