SU950239A1 - Compacting mechanism - Google Patents

Description

one

The invention relates to agricultural machinery and can be used in the construction of presses designed for compaction with straw-like materials continuously flowing into the bale chamber.

A sealing mechanism is known, comprising a base, a crank, a two-sided rocker, one arm of which is associated with the base and the other with a connecting rod, a sealing body and the pressing chamber 1.

A disadvantage of the known technical solution is that in agricultural production and other types of production, in some cases it is necessary to compact the material that continuously enters the bale chamber that does not have the specified dimensions, for example, when harvesting straw straw from hay bales. The prototype actuator ensures uniform sealing of parts with specified dimensions. Its main disadvantage is that it does not allow the level of compaction to be continuously changed depending on the degree of compaction of the materials entering the bale chamber.

which leads to a decrease in the uniformity of its compaction.

The aim of the invention is to increase the uniformity of the seal.

The goal is achieved by the fact that

5, a crank is connected to a two-arm rocker by means of a hydraulic cylinder having dampers.

FIG. Figure 1 shows a kinematic, diagram of the sealing mechanism with a finger sealing element; in fig. 2 - the same, with the upper arrangement of the sealing working body, made in the form of a slider; in fig. 3 - the same, with the lower arrangement of the sealing working body, made in the form of a slider;

 in fig. 4 - sealing working body mounted on the trailed hopper; in fig. 5 - hydraulic hopper.

Claims (2)

The sealing mechanism consists of a base 1, a pair of which is hinged on the crank of the hook 2, which is hinged to the connecting rod made in the form of a hydraulic cylinder 3 to change the level of pressing. The hydraulic cylinder cavities are interconnected by a damping device, including a relief valve 4, a check valve 5 and connecting hoses 6. In the sealing mechanism with a finger sealing working body, the hydraulic cylinder 3 is connected to the two shoulders of the rocker arm 7, pivotally attached to the base 1 and through it and the rod 8 the sealing tool 9 installed in the press chamber 10. In this embodiment, the two shoulders of the rocker arm 7 is made in. kind of parallelogram mechanism. The design of the sealing mechanism with the top arrangement of the sealing working body, made in the form of a slide, is similar to the design of the mechanism with a finger sealing working body. Unlike the first two variants, the device of the sealing mechanism with the lower arrangement of the sealing working body is characterized in that the rod made in the form of a hydraulic cylinder 3 is directly connected to the sealing working body 9 (see Fig. 3). The sealing mechanism can be used to compact the hay and straw materials in the construction of the trailed accumulator (see Fig. 4). Trailed stacker consists of a chassis 11 on which a press chamber 10 is mounted. A hydraulic motor 12 and crankshafts are mounted on the press chamber, made in the form of drive wheels 2, which are interconnected by a chain transmission 13. The drive wheels are hinged and connected to the bolsters made in the form of hydraulic cylinders 3. The hydraulic cylinders are interconnected with swing arms 14 interconnected by rods 15. Swing arms 14 are rigidly fixed on shafts 16 mounted in sub-holders 17 on a pressing chamber 10. On shafts 16 there are also The rocker arm 7 is rigidly secured. These levers are interconnected by connecting rods 8. To the connecting rods 8, sealing working bodies are rigidly fastened. In addition, on the bale chamber 10 is installed hydraulic valve 18 of the hydraulic booster system. The accumulator hydraulic system consists of a shchestrenny pump 19 connected by a discharge pipe 20 with a hydraulic motor 12 and a suction pipe 21 with a reservoir 22. The tank is also interconnected with the hydraulic distributor by a drain pipe 23. The hydraulic motor is connected to the hydraulic distributor by pipes 24 and 25. A pressure sensor is installed on the discharge pipe 20 26 and a reducing valve 27. The valve 12 includes a housing 28 in which a spool 29 is installed and a damping device consisting of a bypass valve first valve 4, check valve 5 and 6 schlangov connecting the valve cavities with cylinders 3. In Zolotnikova housing cavity 30 and a system of connecting channels are made Hydrodistributor 31-36. The device works as follows. The oil from the tank 22 is fed by a pinion pump 19 through the discharge pipe 20 to the hydraulic motor 12, drives it into rotation, and then through the pipe 24, channels 31 and 32 in the housing 28 of the distributor 18 and the drain pipe 23 is discharged into the tank. Rotation from the motor through valuable gears 13 is transmitted by a crankshaft, made in the form of driving wheels. 2. From the drive wheels by means of rods made in the form of hydraulic cylinders 3, rocking levers 14 and a two-arm rocker arm 7, the rotational movement is converted into reciprocating movement of the sealing working members 9. At the same time, the senomomista mass is fed into the pressing chamber 10. At the initial moment of the jaws cylinder 3 is in the extreme retracted position. As the horticultural mass enters the press chamber 9, the working bodies 10 consolidate it. At the same time, as the mass is accumulated and its predetermined degree of compaction is reached, the force from compressing the hardened material through the sealing working bodies, the two shoulders of the rocker 7 m 14 is transmitted to the rods of the hydraulic cylinders 3, try to stretch them. At this time, the oil is squeezed out of the fist cavities of the hydraulic cylinders 3 and through the hoses 6, channel 33, through the bypass valve 4, channel 34, spool cavity 30 and channels 35 and 36 passes into the crush cavities of these hydraulic cylinders, extending their brushes. This process takes place continuously, ensuring a constant degree of compaction of the material entering the press chamber. The compacted haylastic material is formed into a bale and unloaded from the bale chamber, and the sealing members 9 return to their original position. The return may be effected by the action of the own weight of the sealing means. In this case, the oil flows from the hydraulic cylinders 3 below the crush cavity to the hydraulic cylinder cavities 3 in the same way as described, but in reverse order, while the overflow valve 4 is locked and the non-return valve 5 is open. In addition, the sealing member can be returned by force moving the spool 29 to the lower position. Claims of the invention A sealing mechanism comprising a base, a curvature, a two-sided core, one shoulder of which is associated with the base, and the other with a brace, sealing the organ and the pressing chamber, characterized in that. that, in order to increase the uniformity of the seal, the crank is connected to the two-arm rocker by means of a hydraulic cylinder having dampers. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 564975, cl. B 30 B 1/00, 1976.