SU580157A1 - Overhead conveyor tensioning device - Google Patents

Description

I

This invention relates to a converter vehicle.

A device for tensioning a working member of a conveyor is known, comprising a frame on which a driving drum is movably mounted associated with a hydraulic jack. The drive of the hydraulic cylinder is provided with splined shafts on which the carriage is movably mounted, carrying a drum associated with a drive with conical gear pairs, spaced, in the carriage 1.

A disadvantage of the known device is a large metal intensity, complexity and the required accuracy in the manufacture of the hydraulic system.

The closest of the known technical solutions is the tension device of the overhead conveyor, which includes a frame with a limit switch, on which a fixed part of the load way is fixed and a movable carriage connected by a flexible element with a tension load 2 is installed.

A disadvantage of the known tension device is the unreliability of its operation, and therefore the known device does not ensure uniform tension of the pulling organ (chain).

The purpose of the invention is to provide automatic tensioning of the chain.

This is achieved by the fact that in the proposed device, on the sides of the frame, there is mounted a spring-loaded cogged rail, with the teeth of which the podrulen-sinenna doggie mounted on the trolley interacts.

FIG. 1 shows the proposed device, a general view; FIG. 2 — node I in FIG. one; in fig. 3 is a view A of FIG. 2; in fig. 4 — node II in FIG. one.

The tensioning device consists of a fixed frame 1, to which conveyor tracks 2 are rigidly attached and a movable rail 3 is installed, held in position 4. The rail 5 is fixed on the rail, which interacts when the rail is moved with the limit switch 6. Installed on a non-movable frame 1 The same trolley 7, to which the section of the track 8 is attached, is formed with non-twisted paths.

2 sliding joint 9. An element of the tensioning mechanism 10 is attached to the movable carriage. A spring-loaded pawl 11 mounted on the cage and interacting with the teeth of the lath 3 allows only the carriage to move

in the direction of the cargo. Mechanism. On frame 1, a limit switch 12 is installed, with which carriage 7 interacts in one of the extreme isolations.

The nat ual device works as follows.

in a way.

The tension mechanism 10 establishes the minimum force required for normal operation of the conveyor. As the chains wear out, the carriage 7, under the action of the tensioning mechanism, moves along the fixed frame 1. At the same time, the spring-loaded doggie And consistently slips along the tooth of the rod 3.

In the extreme position, the movable carriage 7 presses the limit switch 12, which turns off the conveyor to restore the tension of the tensioning device.

In the event of an increase in the force in the chain above the force of the hinge mechanism 10, the carriage 7 tends to move in the direction of increasing the force. When this dog 11 is in engagement with the tooth of the rail 3 and the spring 4 holds the rail in a stationary position, i.e., any increase in the force in the chain does not cause the carriage to reverse. When an emergency tensioning of the chain occurs in the tensioning device area, the force on the pawl 11 exceeds the force on the spring 4 holding the rail 3, and the rail begins to move. Layer 5 presses the limit switch 6, which disables the conveyor drive.

In the proposed device, a change in the tension of the chain in the tensioning device area is performed automatically depending on the distribution of forces in the chain loop of the conveyor.

Claims (2)

1. USSR author's certificate No. 479692, cl. In 65G 23/44, 1972. 2. USSR author's certificate No. 255123, cl. At 65G 23/44, 1968. fpuz.l 3 s fpus. 3 J