SU1751110A1 - Strawbale thrower operating tool - Google Patents

Abstract

Use: mechanization of loading and unloading equipment and m. used when loading bales of haymaking materials into storage. The essence of the invention: the working body of the bale scraper of hay-straw materials has a mechanism of forced unloading and a mechanism for changing the angle of bale ejection. The mechanism of forced unloading is made in the form of a lever connected to a drive shaft and a shaft mounted in bearings. The last is rigidly fixed work item, made in the form of a fork and two shoulders. One shoulder of the two shoulders lever is connected by a spring with a lever rigidly fixed on the drive shaft. On the other shoulder of the two shoulders, the roller is mounted on the axis with the possibility of rotation and interaction with the guide as an incomplete arc of a circle, the guides being rigidly connected to the platform and articulated with the mechanism for changing the bale release. The ends of the guide in the form of an incomplete circular arc are installed in additional guides. 1 il. CPU with

Description

The invention relates to the mechanization of loading and unloading equipment and can be used when loading bales of haymaking materials into storage.

The MT-1 bale thrower is known, consisting of a frame, hydraulic system / fork and fork. The working body of the thrower (fork) is driven by the tractor’s hydraulic system, which is activated by the bale. Before the start of the bale loading process, the forks are transferred from the transport position to the working position. The bale throwing workflow consists of picking up bales, moving the bale together with the forks and holder from the tractor's hydraulic system and free flight of the bales. The height and range of throwing is adjusted by increasing the revolutions of the tractor engine. They move bales to a relatively small height, ensuring their loading into the vehicle.

However, the bale thrower MT-1 is a batch machine, which limits the possibility of increasing productivity. When bales are moved to a height of 15-20 m, the thrower becomes bulky, which leads to an increase in the weight of the baler and an increase in the time of the working cycle and, consequently, to a decrease in labor productivity. The thrower is driven from the tractor's expensive hydraulic system. A bale thrower is attached to the tractor and driven by a hydraulic system.

-H

cl

about

tractor. A vehicle with an internal combustion engine in the vaults cannot work because fire safety measures are violated.

The existing bale thrower constructions with tape, roller working bodies provide movement at a relatively small height, ensuring loading of bales into a vehicle. In order to achieve the required free-flight speed to a height of 15-20 m, it is necessary to create a structure with several cascades of working bodies, which will lead to cumbersome design. In addition, this will lead to an increase in specific energy consumption.

Closest to the present invention is the working body of the scraper, comprising a housing rotating from a drive hub with spokes, on which buckets are mounted, having a forced-moving movable bottom. The bottom is made in the form of a piston with a rod. The bottom is driven by a two-armed lever, one end of which is connected to the rod, and the other end interacts with a fixed support on the body. The inertia forces acting on the material being transported depend not only on the rotation speed of the bucket, but also on the accelerations created two shoulders with a lever when meeting with an immovable stop. The trajectory and range of the material's sweep will depend on the magnitude of the inertial forces acting on the transported material.

The disadvantages of the working tool of the scraper are the complexity of the bucket design, piston, forced drive, the presence of significant shock loads when meeting the lever with a fixed stop, low throwing efficiency at a low frequency of rotation of the rotor with buckets, since in this case the magnitude of the inertia forces will be small, and therefore , and the range of the metania material is negligible.

The aim of the invention is to increase the efficiency of throwing and simplify the design of the working body of the bale scraper of hay and straw materials and other non-splitting piece goods when loading them into warehouses and storages having a large (15-20 m) height.

This goal is achieved by the fact that the thrower is equipped with a mechanism for changing the angle of bale outburst, a guide and a platform, and the forced unloading mechanism is made in the form of a lever connected to the drive shaft and mounted in bearings of the shaft on which the working element in the form of a fork is rigidly fixed

and a double-shouldered lever, one shoulder of which is connected by a tension spring with a lever rigidly fixed on the drive shaft, and a roller mounted on the second shoulder, freely

rotating on an axis and rolling in along a guide, made in the form of an incomplete circular arc, rigidly connected to the platform and articulated with a mechanism for changing the angle of bale ejection, with the ends

guides are installed in additional guides.

The drawing shows the construction of the working body of the baler of haymaking materials.

The working body contains a drive shaft 1, on which the lever 2 is rigidly fixed. At the end of the lever 2 bearings are installed with a shaft 3 rotating in them, on which a double-arm lever 4 and a working element in the form of a fork 5 are attached. The double-arm lever 4 is connected by one arm with one arm lever 7, rigidly sitting on the drive shaft 1, and not on the other shoulder of the two shoulders lever 4. axis 8 is mounted freely rotating

roller 9. In additional guides 10 with eccentricity e with respect to the axis of rotation of the drive shaft 1, a guide 11 is installed with a fixed platform 12. The movement of the guide is carried out from the mechanism 13 for changing the throw angle of the bales connected to the guide 11 by the hinge 14.

The working body of the bale scraper scraper is as follows

in a way.

The drive shaft 1 rotates at an angular velocity (O, the lever 2 and the shaft 3 rotate at the same angular velocity. The length of the spring 6, the radius of the guide 11, its magnitude

the eccentricity, the size of the shoulders and the location of the two shoulders of the lever 4, the diameter of the roller 9 are selected so that the shaft 3 during rotation of the drive shaft 1 receives an angular velocity having the opposite direction with an angular velocity. Due to this, the spring 6 is deformed by an amount equal to the eccentricity value of the installation of the guide 11, obtaining a supply of potential energy determined by the formula

Fo + pmax

U

LA,

where FO is the initial force in the spring, kN; Rmax - maximum force in the spring, kN;

I-deformation of the spring, m. With further rotation of the drive shaft 1, the working element 5 picks up with

platforms 12 bale and some time they move together. After reaching the end of the guide 11, the roller 9 breaks off and releases deformed springs, which begin to rotate the shaft 3 with a movable bale with an angular velocity Shz that coincides in direction with the angular velocity al of the drive shaft 1. At the same time, the working element 5 with the load receives an angular speed

  + LZ,

The potential energy accumulated in the deformed springs will transfer to the kinetic energy of the bale throwing, which will flow from work element 5 and begin to move along the free flight path — a parabolic curve.

The height of the throwing without air resistance is determined by the formula:

H

&

2d

sin2yS,

where Vrp is the linear speed of the bale at the moment of separation from the working element 5, m / s;

 angle of methane;

q - free fall acceleration, m / s2.

Bale throwing range is determined by

BUT

g

sin2Ј.

0

five

0

five

0

To increase productivity and better balance, several working elements can be mounted on shaft 1.

Formula of invention

The working body of the bale binder of senosomolomical materials, including a drive shaft and working elements having a forced unloading mechanism, characterized in that, in order to increase the efficiency of throwing and simplify the design, it is equipped with a mechanism for changing the angle of bale ejection, connected by a lever with a drive shaft and a shaft mounted in bearings, on which a working element is rigidly fixed, made in the form of a fork and a two-armed lever, one arm of which is connected to a spring with a lever rigidly fixed to the drive shaft, and with the other arm a roller is installed with the possibility of rotation and interaction with a guide in the form of an arc of a circle connected rigidly to a platform and pivotally with a mechanism for changing the angle of ejection of bales, while the ends of the guide in the form of an arc of a circle installed in additional guides.

Claims (1)

Claim The working body of the thrower of bales of senosolid materials, including the drive shaft and working elements having a forced unloading mechanism, characterized in that, in order to improve throwing efficiency and simplify the design, it is equipped with a mechanism for changing the angle of ejection of bales, and the forced unloading mechanism is made in the form of a lever connected with a drive shaft and a shaft installed in the bearings, on which the working element is rigidly fixed, made in the form of a fork and a two-shouldered lever, one shoulder of which is connected by a spring with a lever rigidly fixed on the drive shaft, and with the other shoulder, a roller is mounted with the possibility of rotation and interaction with the guide in the form of an arc of a circle connected rigidly to the platform and pivotally with a mechanism for changing the angle of ejection of bales; while the ends of the guide in the form of an arc of a circle are installed in additional guides. I