SU1463177A1 - Mechanism for shifting the reel of agricultural machines - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery. The purpose of the invention is to increase the reliability of the mechanism and expand its functionality. The mechanism for mixing the reel of agricultural machines contains hydraulic cylinders 1 and 2 mounted on supports. The rods of hydraulic cylinders 1 and 2 are connected to supports. The rod cavity 14 of the hydraulic cylinder 1 pipe 4 is connected to the distributor. The piston cavity 15 of the hydraulic cylinder 1 by pipe 5 is connected to the rod cavity 16 of the hydraulic cylinder 2. The piston cavity 17 of the hydraulic cylinder 2 by pipe 6 is connected to the distributor. On the housing 18 of the hydraulic cylinder 1 there are dual lines 19 and 20 having openings 21 and 22 and 23 and 24. Non-return valves 25 and 26 are installed in openings 22 and 23. The installation of check valves 25 and 26 prevents the working fluid from entering the corresponding cavities in the extreme piston positions 3 il. § C / s

Description

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FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular, to mechanisms for moving the reel.

The purpose of the invention is to increase the reliability of: The mechanism of operation of the mechanism and its expansion (functional BO3NiomHOCTeft. J. In Fig. 1, the principle of the proposed mechanism is shown in xxew; Fig. 2 is a diagram of the connection of hydraulic cylinders; Fig. 3 - installation of a check valve.

The reel transfer mechanism contains two piston cylinders 1 and 2,; distributor 3, pipelines 4-6, connecting successively cylinders 1 | and 2 and distributor 3 to each other. j The hydraulic cylinders 1 and 2 are mounted on the {gate supports 7 and 8, which are hingedly fixed on the header body 9 (not shown).

j The rod 10 of the hydraulic cylinder 1 is hingedly connected (connected with the support 11 of the left support 7, and the rod 12 of the hydraulic cylinder 2 - with the support 13. The rod of the 14 cylinder of the hydraulic cylinder 1 pipe | 4 connected to the distributor 3, 1 piston cavity 15 of the hydraulic cylinder 1 - | pipeline 5 with the rod end 16 of the hydraulic cylinder 2; and the piston cavity 17 of the hydraulic cylinder 2 - the pipeline 6 with the distributor 3. On the case 18 of the hydraulic cylinder ipa 1 there are double lines 19: and 20 each having two openings, respectively 23, 24. At the same time in the bore; x 22 and 23 are installed check valves: 25; and 26, in Spherical: the distance between the centers of the holes 21 and 22, as well as 23 and 24, is less than the width of the piston 27, which is made solid. The hydraulic cylinder 2 has a piston 28.

The proposed mechanism works as follows.

To move the reel, for example, backwards, the distributor 3 is switched to the position shown by the right rectangle (Fig. 1). The working fluid from it through conduit 4 enters the dual mainline 20 and through opening 24 is directed into the rod cavity 14 of hydraulic cylinder 1, opening 23 at this moment is closed by a check valve 26. The piston 27 moves back and through the stem GO moves back also. 11 reel At the same time, the working fluid is squeezed out of the piston cavity 15 by the piston 27 through the openings 21 and 22, enters the dual line 19 and is directed through the pipeline 5 into the rod cavity 16 of the hydraulic cylinder 2, causing its piston 28 with the rod 12 to retract into the hydraulic cylinder 2 and move the bearing 13 reel back to header 9 body.

The synchronous movement of both supports 11 and 13 of the reel on supports 7 and 8 to the housing 9 is provided by the parameters of hydraulic cylinders 1 and 2, which are chosen so that the area of the end surface of the piston part of the hydraulic cylinder 1 is equal to

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the area of the end surface of the rod part of the hydraulic cylinder 2.

When the piston 27 first reaches the extreme position in the hydraulic cylinder 1, its rod cavity 14 is connected to the hole 22, as a result of which the working fluid from the rod cavity 14, opening the check valve 25 through the hole 22, is directed through pipeline 5 to the rod cavity 16 of the hydraulic cylinder 2 and moves its piston 28 with rod 12 to the retracted end position if it has not reached it. Thereby, the cavity 16 of the hydraulic cylinder 2 is fed and the supports 11 and 13 are aligned. To move the reel from the header body 9 forward, the distributor 3 switches to the position shown by the left rectangle (Fig. 1). As a result, the working fluid from the pipeline through the pipeline 6 enters the piston cavity 17 and moves its piston 28 with the brush 12 and the support 13 from the housing 9. At the same time, the working fluid is squeezed out of the rod cavity 16 by the piston 28 of the hydraulic cylinder 2 and through the pipeline 5 through the twin line 19 and the opening 21 is directed into the piston cavity 15, while the check valve 25 closes the opening of the working fluid with the flow of working fluid 22, thereby preventing the working fluid from flowing from the rod cavity 16 of the hydraulic cylinder 2 to the rod cavity 14 core 1, and the pressure moves the piston 27 with the rod 10 and the support 11 is also of the casing 9.

When the piston 27 reaches the front end position and, if necessary, the piston 27 with the rod 10 and the support 11 back to the housing 9, the check valve 26 prevents the working fluid from the distributor 3 from entering the piston cavity 15 of the hydraulic cylinder 1, thereby preventing out of sync movement of both the supports 11 and 13 reel. Thus, when the grain mass hangs on the support, the reel is skewed. Installing a check valve allows the use of hydraulic cylinders for the horizontal movement of the reel, since fluid pressure B of the rod cavity promotes piston movement in the other direction and prevents the working fluid from entering the piston cavity.

Claims (1)

Invention Formula The mechanism for moving the reel of agricultural machines, containing two hydraulic cylinders of a hydraulic system with a distributor mounted on the rotary supports, the piston being made in one piece, and the input and output lines of the piston hydraulic cylinder are doubled, and the corresponding pairs of axes are spaced axially by a distance from the hydraulic cylinder body, a larger piston width, characterized in that, in order to increase the reliability of the mechanism and expand its functionality, in bl zhnih to the center of the housing of the hydraulic cylinder holes of input and output highways installed check valves. 15 -5 ff 1 one .З