SU1484869A1 - Working member of earth-moving machine - Google Patents

Description

The invention relates to earth moving equipment, namely to construction and road machines, designed for cutting gaps in frozen soils, concrete, asphalt, etc.

The goal is to increase the reliability of work by mechanizing the lifting unit of the working body. The working body is installed on the frame 1, associated with the base model in the form of a planetary differential gearbox 6, the carrier of which is connected to the mill-flywheel 8 through the clutch of the limit moment. The latter consists of a disk 9 fixed on the shaft and a spring 10, the compression force of which is adjustable. The swinging mechanism of the frame 1 is made of a vertical axis 3 installed on it with an asterisk rigidly connected with the axis and a movable asterisk 7. The latter is kinematically connected with the coronal wheel of the planetary gearbox and with a fixed asterisk, installed. on the axis 3. The destruction of the material occurs much more efficiently and with menyp, energy consumption due to impact chipping due to the energy of the cutter-flywheel 8. To do this, first perform the acceleration of the cutter-flywheel 8 by turning on the electric motor with a stationary coronary wheel of the planetary gearbox 6. In this case all energy

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The invention relates to earth-moving machinery, in particular to construction and road machines, in particular, to working bodies of milling machines intended for cutting gaps in frozen soils, concrete, asphalt, etc.

The aim of the invention is to improve the reliability of work by mechanizing the | θ of the lifting unit of the working body.

Fig. I depicts a working body with a hinge mechanism and a drive; figure 2 is the same, side view.

The working body of the console is installed; 5 flax on the frame 1, hingedly connected with the bed 2 by the base machine. Frame 1 has the ability to swing around a fixed axis 3 in a vertical plane. On the frame 1 there is an actuator "20 4, made of an electric motor 5 and a differential planetary gearbox 6, the central wheel of which is connected to the shaft of the electric motor 5, and the crown wheel - from 25

an asterisk 7 of the chain planetary mechanism for lifting the milling cutter. Drove the planetary gearbox 6 is connected to the mill-flywheel 8 through the clutch torque limit, which consists of 30 disk 9 fixed on the shaft, spring 10, pressing the mill 8 to the disk 9. The compression force of the spring is adjusted by a nut 11 with a washer 12. At the end of the frame 1 is installed the counterweight 13, to move the device to the transport position is the latch 14 mounted on the base machine, to limit the lift of the cutter serves latch 15. 40

The device works as follows.

/ In the initial position, the frame 1 is held in a horizontal position by locking pins 14 and 15, the electric motor 45 turns on the 5, the crown wheel of the planetary gearbox 6 is stationary, all energy is supplied to the carrier of the gear unit, i.e. on the acceleration of the cutter flywheel. The torque limit coupling limits the moment of inertia force transmission from the cutter to the carrier of the gearbox with a nominal value. ,

After the mill is accelerated, the operator removes the latch 14 and the mill under the action of gravity lowers, comes into contact with the material and destroys it, losing almost all the stored kinetic energy. And

the destruction of the material occurs much more efficiently and with less energy than the static destruction of the material due to impact shear using the kinetic energy of the cutter-flywheel.

The contact of the handwheel cutter with the ground is accompanied by the appearance of a moment of resistance on the planet carrier, limited by a clutch of the moment limit, which in turn leads to the appearance of a proportional moment on the crown wheel of the gearbox and sprocket 7 associated with the chain differential mechanism for lifting the mill, rotating clockwise, rolls around in a fixed chain, thereby rotating frame 1 counterclockwise. The milling cutter comes out of contact with the ground, but its lifting continues, as the driver has a significant moment of inertia applied when the mill-flywheel is re-accelerated. As the cutter accelerates, the inertia forces decrease, its lifting stops and the cutter under the action of gravity descends again to the material being processed before contact with it, the impact destruction of the material occurs again, i.e. the cycle described is automatically repeated. The termination of the cyclical operation of the device is carried out either from the motorization of the electric motor, or by the installation by the operator of the stop 14 at the upper position of the lever.

Claims (1)

Claim The working body of the earthmoving machine, which includes a frame pivotally connected to the base machine with a cantilever cutter mounted on it with a drive, a mechanism for its swinging in a vertical plane connected to the frame and a counterweight placed on the frame, in order to increase reliability by mechanization of the lifting unit of the working body, the cutter drive is made in the form of a planetary differential gearbox, the carrier of which is connected to the cutter, and the frame swinging mechanism is made of a vertical axis mounted on the frame and rigidly connected second sprocket and with it the movable asterisk ki kinematically related venech ⁵ 1484869 ⁶ ny wheel on the axle planetary gearbox on the axis by means of a chain and with a fixed asterisk, set-up circuit. DLizhig