RU16687U1 - WHEEL ENERGY MEANS OF AGRICULTURAL MACHINE - Google Patents

Abstract

1. Wheel energy means of an agricultural machine, comprising a frame with a control cabin installed on it, an internal combustion engine connected to an adjustable hydraulic pump, a steering wheel axle and a drive axle equipped with hydraulic motors, characterized in that it is equipped with a second adjustable connected to the internal combustion engine a hydraulic pump, hydraulic motors are adjustable, and the on-board hydraulic system of the drive of each wheel includes an adjustable hydraulic pump and connected to m hydraulic motor main pipelines and connects gidroperemychka side hydraulic drive wheels between soboy.2. The energy tool according to claim 1, characterized in that a two- or three-position spool is used as a hydraulic jumper.

Description

Wheel Energy

agricultural machinery.

The utility model relates to agricultural machinery, namely to wheeled energy means, mainly forage harvesters.

Known universal wheeled energy tool (hereinafter - KES) UES-2-250A Polesye 1. This tool contains a frame on which an internal combustion engine (ICE), a control cabin, steering and driving axles, a hydraulic steering system, a hydraulic drive wheel drive system are installed. The rotation of the wheels of the controlled bridge is carried out by the hydraulic system using two hydraulic cylinders, and the drive of the wheels of the drive axle is carried out from one hydraulic motor through the range box, half shafts and final drives. Power is transferred to the hydraulic motor from a hydraulic pump driven from the internal combustion engine.

The disadvantages of this drive wheel drive are:

- the presence of a manual gearbox to ensure the required speed range of the IES;

- the presence in the transmission after the gearbox of a mechanical differential mechanism (differential) for the redistribution of the speed of rotation of the drive wheels during turns and when the IES moves along the irregularities of each track;

-the presence of a mechanical differential lock with a separate control to increase IES cross-country ability in certain sections of the terrain.

Also known agricultural harvesting unit, which includes a wheeled energy tool, which contains fixed

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IPC 6 AO ID 57/00

on the internal combustion engine frame, a control cabin, axles of driving and steered wheels, and power is transmitted to the driving wheels from the internal combustion engine to an adjustable hydraulic pump and further to the hydraulic motors of the wheels 2. This IES is the closest to the claimed one and is selected as a prototype.

Compared with analogue 1, the drive of the prototype does not require a mechanical differential, but the prototype needs to block the drive wheels, which is identical to the analogue of the passability of the IES, and this eliminates the advantages of two hydraulic motors.

The essence of the claimed utility model lies in the fact that the power from the internal combustion engine to each drive wheel (to each side) is transmitted through its adjustable hydraulic pump and the adjustable hydraulic motor driven by it. Such an IES drive eliminates the elements of a mechanical transmission (gearbox and drive wheel lock mechanism) from the IES drive, i.e. allows you to carry out hydrostatic drive of the drive wheels, which does not contain switched mechanical gears and elements, which greatly simplifies the management of IES. In addition, the combination of adjustable pumps and motors can significantly expand the range of operating speeds, and in a stepless mode.

With such a drive system, the role of differential and blocking is played by a hydraulic jumper (for example, a two- or three-position spool), which fully or partially connects or disconnects the onboard hydraulic systems.

Such a hydraulic jumper allows you to:

- when using a three-position spool:

a) in the Disconnected position, receive two independent on-board wheel drives;

b) in the United position, get the hydraulic differential;

c), in the throttle position receive the braked differential.

- when using a two-position spool, drives of driving wheels according to paragraphs. a) and b).

On figl shows the kinematic diagram of the proposed wheeled energy means, figure 2 is a hydraulic diagram of the IES.

A wheeled energy facility comprises a frame 1 on which an internal combustion engine 2, a control cabin 3, a steering wheel axle 4 with a drive hydraulic cylinder, a drive axle 5 of a drive wheel 6 and 7, comprising respectively adjustable hydraulic motors 8.9, are mounted. Adjustable hydraulic pumps are also installed on the frame: 10 for the drive of the left wheel (left side) hydraulic motor and 11 for the right side. The waltz of the pumps 10, 11 are connected in a known manner by a cardan transmission with a power take-off shaft two, and their working cavities are connected by main pipelines 12, 13 with the working cavities of the hydraulic motors 8, 9 on the wheels 6, 7. Control of the pumps 10, 11 and the hydraulic motors 8, 9, that is, a change in their working volumes is carried out by the operator from the control cabin 3.

The main pipelines 12,13 are interconnected by a hydraulic jumper 14, which includes a two- or three-position valve (not shown due to the fame of the design), the control system of which is carried out by known methods also from the operator's cab.

The movement and management of IES is as follows.

From two 2 power is transmitted to the shafts of the adjustable hydraulic pumps 10, 11 through the power take-off shaft and cardan gears. Further, the power is transmitted through the main pipelines 12, 13 from the working cavities of the hydraulic pumps 10, And into the working cavities of the hydraulic motors 8, 9 and further from the shafts of the hydraulic motors 8.9 to the driving wheels 6.7.

To obtain the highest cross-section capacity of the IES, a hydraulic jumper 14 (by means of a slide valve) disconnects the on-board hydraulic systems and allows independent drives of the driving wheels 6, 7 along the sides (Disconnected position).

When using IES for driving on the highway, a hydraulic jumper 14 connects the onboard hydraulic systems, thereby creating a cross-axle hydraulic differential (position United).

If road conditions deteriorate, for example: ice and snow on different tracks, it is possible to partially connect onboard hydraulic systems with a hydraulic jumper 14 (throttling position), which will make it possible to obtain a braked differential.

Sources of information:

1.V.A. Shurinov, M.P. Joffe.

Forage complex Polesie. Benefit to the machine operator. Minsk, Urajay, 1992

2. RF patent No. 2050102, IPC 6 A01D4I / 00, publ. bull. No. 35, 1995

Claims (2)

1. Wheel energy means of an agricultural machine, comprising a frame with a control cabin installed on it, an internal combustion engine connected to an adjustable hydraulic pump, a steering wheel axle and a drive axle equipped with hydraulic motors, characterized in that it is equipped with a second adjustable connected to the internal combustion engine a hydraulic pump, hydraulic motors are adjustable, and the on-board hydraulic system of the drive of each wheel includes an adjustable hydraulic pump and connected to m hydraulic motor main pipelines and connects gidroperemychka side hydraulic drive wheels between themselves. 2. An energy tool according to claim 1, characterized in that a two- or three-position spool is used as a hydraulic jumper.