SU1407861A1 - Telescopic belt conveyer - Google Patents

Abstract

The invention relates to a lifting and transport machinery, in particular to telescopic belt conveyors. The goal is to increase the reliability of the conveyor by reducing the resistance to movement of the belt. For this, the drive and supporting drums (B) 6.7 are connected to the tape accumulator by a double chain transmission 8. The ends of the moving end B 11 and the first are connected to parallel links of the latter. the link of the lever linkage 12 with additional roller supports 13, the axes of which have rollers and move along rails having straight and curved sections. The extension of the sliding frame 1 to the desired length is performed by transferring rotation from B 6 to the kinematic pair of screw 21 — a nut that converts the rotational movement into translational movement of the carcass 1. When the drive B 6 rotates, B 11 moves, slides forward or backward. m is not behind a sliding lever linkage 12 with roller carriages 13, supporting the belt 16, in a curvilinear section. To compensate for possible loosening of the belt 16, B 18 is provided, and for tensioning the belt 16, a lever mechanism 30 connecting the sliding frame. Cass I and B 4. 6 Il. O (L

Description

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The invention relates to a lifting machinery industry, namely to telescopic belt conveyors,

The aim of the invention is to increase the reliability of the operation of the conveyor by reducing the resistance to movement of the belt.

Fig, 1 shows a telescopic belt conveyor in a shifted position, a general view; in FIG. 2, the same in the extended position; on fig.Z - section aa in figure 1; Fig. A shows a kinematic drive scheme for frame extension; on fig.Z - section bb on fig.Z; figure 6 - section bb In figure 5

The telescopic belt conveyor contains an extending frame J in the form of articulated levers, forming a mechanism of the Nurenberg scissors type, on which roller supports 2 for cargo and roller supports 3 for single conveyor branches are fixed. - The sliding frame is connected to the drive drum 4, In the case 5 is placed a tape drive consisting of drive 6 and supporting 7 drums connected by a double chain transmission 8, to parallel links 9 of which are attached the ends of the axis J O of the movable end drum 1 1 and the first link but a sliding lever linkage 12 with additional supporting roller supports 13, the axes 14 of which have rollers and move along rails 15 having straight and curvilinear sections.

The belt 16 successively surrounds the driving drum 4, the fixed drum 17, the spring loaded drum 18, the roller carriages 13, the mobile drum and the supporting drum 7, the driving drum 6, the fixed drum 9. Increasing or decreasing the length of the extension frame 1 attached to the housing 5 through the hinge 20 is produced by means of a pair of screw 21 - nut 22 by rotating the latter. Moreover, the screw 21 is connected to the hinge 23. The torque is transmitted to the nut 22 by taking power from the drive drum 6 through the gear 24 and the gearbox 25. The console end of the frame 1 rests on the telescopic column 26 with the roller 27. The ends of the axes 14 are dressed smooth rollers 28, and on the last axis - stepped rollers 29, with the guide J5 on

plot from point K to point K has a stepped shape.

The conveyor works as follows.

The extension of the sliding frame to the desired length is carried out by transferring rotation from the drive drum 6 to the kinematic pair screw 21, nut 22 converting the rotational motion into translational movement of the frame, the gear ratio of the kinematic chain including drive drum 6, gear 24, gear reducer 25, pair screw 21 — nut 22, —calculated in such a way that the magnitude of the linear displacement of the longitudinal axis of the drive drum 4 is equal to the displacement amount of the longitudinal axis of the sliding drum JJ.

When the drive drum rotates, the movable drum 11, moving, forward or back, pushes in front of it or not the sliding lever link 12 and the roller supports 13, which support the conveyor belt 16 in a curvilinear section. In order to ensure the guaranteed extension of the multi-link 12, stepped rollers 29 are put on the ends of the axis 14 of the last link, which prevent it from moving further to the point k.

Compensation of possible weakening in the tension of the belt is made by a spring-loaded drum 18. In addition, the constant tension of the conveyor belt is provided by a lever mechanism 30 connecting the sliding frame 1 and the driving drum 4. The length of the links of the lever mechanism 30 is always longer than the length of the links of the sliding frame J, and when the latter is moved forward, the belt 16 is additionally lifted, compensating for its weakening due to a decrease in the thickness of the frame 1. When the frame 1 moves to the initial field voltage operation occurs in the reverse order mechanisms.

After extension of the frame 1 to the desired length, the drive drum 6 is turned off, while the slide frame 1 is fixed in a predetermined position due to the kinematic pair of screw 21 - nut 22. Then, the electric drive drum 4 is turned on, making movement of the conveyor belt and and j-ruz on it .

The telescopic belt conveyor allows to obtain large variations of its own length with a small size of the stationary part, reduction of power consumption due to a decrease in resistance to the movement of the ribbon, simple and reliable in operation, and can be used for various loading and unloading operations with unitary goods when loading or unloading a truck, large-capacity containers of covered railway cars.

Claims (1)

Invention Formula Telescopic belt conveyor containing an expanding frame in the form of Nurenberg scissors with roller support mounted on it for the group , 07861 zone and idle branches of the tape and tape drive with enveloped driving and supporting drums and an end drum, installed in guides with the possibility of moving along them and connected with the mechanism of the conveyor spacing, in order to increase the reliability of the conveyor by reducing the resistance the movement of the tape, each guide is made with curved sections enveloping the drums, and the driving and supporting drums are interconnected by means of a chain organ and kinematically - razdvizheniya conveyor mechanism, wherein the tape drive is provided with additional rollers rolikooporami interconnected by means of levers and rollers placed in the guide and associated with the drum end connected to the chain body. 15 20 FIG. g 21 Lfig. UA (. W / U //// //////// I 7S28 CPU d. 5 FIG.