SU1728093A1 - Scraper conveyer tensioner - Google Patents

Abstract

The invention relates to industrial transport and allows to increase the durability of the conveyor chain by providing a predetermined force of its tension. The tensioning device includes 1 toothed racks 2 mounted on the frame, on which gears 3 are mounted, mounted on the ends of the axle 10, on which the tensioning sprocket (NC) 5 is loosely mounted and mounted on both sides of the last coupling half 6 for coupling to NC 5 by means of t g 7 and a screw mechanism with a drive handle 9 and an additional handle 11 connected by means of a spring 12 with a drive handle 9 and pivotally mounted on the screw 8 of a screw mechanism with the possibility of interaction with an adjustable stop 13. When In the turn of the additional handle 11 up to the stop 13 by the force of the spring, the actuating handle 9 is turned. The tension of the chain depends on the force pressed on the coupling half 6 to NC 5 and is determined by the value of the force in the spring 12. 3 yl.

Description

(L

WITH

The invention relates to tensioning devices used in chain scraper conveyors.

A tensioning device of a scraper conveyor is known, which includes a frame equipped with slats, along which gears rigidly mounted at the ends of the balancing (tensioning) axis move, while on this axis, which also serves as the axis of the tensioning sprocket of the horse-neck, on both sides of the sprocket are arranged with the longitudinal mobility of the half coupling, coupled with the sprocket by means of t g, connected via a screw mechanism with a driving handle 1.

A disadvantage of the known tensioning device of the scraper conveyor is the lack of the possibility of creating a predetermined tension of the tension of the conveyor chain, since

the amount of force applied to the handle and, consequently, the force of pressing the coupling half to the sprocket is not controlled by anything. Tensioning a pull chain over a given force leads to an increase in specific stresses in the hinges of the chain and, consequently, to increased wear.

The circuit of the invention is an increase in the durability of the scraper conveyor chain by providing a predetermined force of its tension.

This is achieved by the fact that the tensioning device of the scraper conveyor, including rails fixed on the frame, on which gears are mounted, mounted on the ends of the axle, on which the tensioning sprocket is freely seated and mounted on both sides of the last coupling half

with a screwdriver with a drive handle, equipped with an additional handle and an adjustable stop fixed to the frame, while the additional handle is connected by means of a spring to the drive handle and mounted on the screw mechanism with the possibility of interaction with an adjustable stop.

Figure 1 shows the proposed tensioning device, a plan view; FIG. 2 is the same side view; fig.Z - node I in figure 2 (adjustable stop).

The tensioning device of the scraper conveyor includes a frame 1 with toothed racks 2 mounted on it, along which the gears 3 move. The latter are rigidly mounted on the ends of the tension axis 4, on which the sprocket 5 of the conveyor is mounted on bearings. On axis 4 on both sides of the sprocket 5, the friction half coupling 6 is movably along the axis, which are connected by means of 7 through a screw 8, provided with left and right cuttings, with a driving handle 9 fixedly mounted on the axis 10, which is a continuation of the screw 8. On The same axis adjacent to the drive handle 9 is an additional handle 11 that is pivotally connected to the drive handle 9 by a spring 12. To limit the rotation of the additional handle 11, use the stop 13; the sprocket 5 is driven by a pulling member 14. The stop 13 is adjustable and consists (fig. 3) of its own stop 15 fixed on the screw 16 and the support nut 17 in which the screw 16 is screwed; against spontaneous rotation, the screw is locked with a lock nut.

The tensioning device works as follows.

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When the additional handle 11 is turned up to the stop 13 by the force of the spring 12, the actuating handle 9 is turned and the screw 8 is rotated and through the cables 7 moves

5 along axis 4 of the friction half coupling 6, until their rubbing surfaces touch the rubbing surfaces of the sprocket 5, which rotates freely on the axle. The torque from asterisk 5 is transmitted to

10 coupling half b and axle 4. Gears 3, synchronously rolling on rails 2, move the entire structure and thus tighten the conveyor chain 14. At the end of the chain tensioning

15 is fixed in this position.

The amount of tension of the chain depends on the force of pressing the coupling half 6 to the sprocket 5 and is determined by the value of the force in the spring 12, which in turn when reaching

20 of the additional handle 11 of the anvil 15 depends on the position of this anvil.

Claims (1)

Claims Invention Tensioning device of a scraper conveyor comprising fastened on the frame 25 gear racks on which gears are mounted, mounted on the ends of the axle, on which the tensioning sprocket is loosely mounted and mounted on both sides of the last coupling half for the coupling 30. with a tensioning sprocket by means of a screw and a screw mechanism with a driving handle, characterized in that, in order to increase the durability of the conveyor drag chain by providing a predetermined 35 tensioning it, it is provided with an additional handle and an adjustable stop fixed to the frame, while the additional handle is connected by means of a spring with a driving handle 40 and pivotally mounted on the screw of the screw mechanism with the possibility of interaction with an adjustable stop. -iJ 1--4, / H. - h ... n n lte jfews rgjP p: feg i 7, f &