SU447573A1 - Automating prefix to stationary scales - Google Patents

Description

(54) AUTOMATED SUPPORT TO STATIONARY

Weights

one

The invention relates to the automation of weighing processes on scales with a system of unequal printing machines, in particular carload ones, and can be used in systems providing accurate movements, as well as their remote control.

It is known to automate) and the attachment to the bucket yoke weights, consisting of a mechanism for moving weights, a mechanism for locking the rocker, an induction transformer position sensor of the rocker arm, and a sensor for remote transmission of readings. The mechanism for moving weights consists of an electric motor with a drive, a gearbox, a running nut carrying a rotary forks, and also a carriage with new grippers.

However, this attachment cannot be used when weighed on scales with a system of unequal arms, for example carload levers.

The purpose of the invention is to create a design of an automation device for stationary scales with a system of unequal shoulders.

leverage providing the necessary. youthfulness of weighing.

For this, the tool is a jumbled weight capture made in the form of a gear reakk, interacting with the drive gear of the gearbox mounted on the camshaft. Parallel to the shaft axis, there are placed contact springs located at a distance equal to the height of the cam contacts acting through the weighing circuit; on installation of the weight on the set weight. Cam contacts (at least two) of the camshaft have a sector shape,

As a result of the application of the proposed attachment, the weighing accuracy increased 10 times.

Fig, 1 shows the described prefix; FIG. 2 is the same, section along A-A in FIG. 1; Fig, 3 - sector cam contact.

The prefix contains a reversing engine 1 connected to a command device and a gearbox 2 with a gear 3 driving gear 4. The gearbox is mounted on the camshaft 5 with cam contacts 6 interacting with the contact springs 7,

A toothed rack bears a grip 8 (see FIG. 2) for a weight 9 having an elongated

U-shaped ...

 The prefix works as follows.

Upon receipt of the signal from the command device of the weighing scheme, the reversing motor 1 is switched on, informing, through the gearbox 2, a rotational movement of the camshaft 5 and postvolent movement through the driving gear 4 of the rack rail 3.,

Together with the gripper 8, it is moved, setting the weight to the required division on the scale arm 1O.

When the shaft 5 rotates, the contacts 6 are alternately interacting with the springs 7, acting through the weighing circuit on the weight setting for a given weight. Simultaneously with the beginning of the rotation of the shaft 5, the sector contacts 11 and 12 close with a certain delay depending on the installation on the shaft. The contact 11 closes for the whole cycle of movement of the weight: from setting to a given weight until it returns to its original position. Contact 12 - for the time of movement of the weight 9 by the gripper for a given biofeedback and for the time of removal of the gripper from the weight of the weighing period.

After installing the weight, the command arrangement from cxe.l. weighing it gives a signal for the reverse rotation of Gate 1, and the capture

is removed from the weight for a period of time, neither regardless of what division on the lever of the scale 10 a weight was installed, after which the engine is stopped by sector contact 12.; After the end of the weighing from the command device of the post injection system, a signal is given to turn on the engine, with

In this way, the gripper 8 moves the weight to the origin 18 I position, and the contact 11 stops the motor.

Subject invention

An auto-mating attachment to stationary weights, containing a gripping device for a weight, connected to a command device, a weighing circuit, a means for moving the gripper with cam contacts, a motor and a gearbox, characterized in that, in order to ensure the accuracy of weighing, the means for moving the gripper weights gear rack, interacting with the drive gear of the gearbox mounted on the drive shaft shaft, and on its axis is placed a number of contact

the springs located at a distance equal to the cam claw contact, acting through the weighing system to set the weight on the given weight, and not less than two cam contacts of the camshaft have a sector shape.

l% | V% | Vo | Ve

ABOUT

J

QV

Jj

 AND.

si

T

T

X