SU1502677A1 - Self-propelled vibrated road roller - Google Patents

Abstract

The invention relates to a device for compacting building materials and will allow to simplify the design and increase reliability. The self-propelled vibratory roller contains a displacement mechanism 26, a vibration exciter in the form of unbalances 15, 16 and 17, a vibration driver 3, a guide roller 4 and an engine 5. Engine 5 drives the hydraulic pump 6. Highways 7 and 8 of the hydraulic pump 6 communicate with the distributor 9. Highway 10 and 11 of the distributor 9 communicated with the hydraulic motor 12. The distributor 9 has a drain 33. A finger 19 is fixed on the out-of-balance 17. On the out-balance 16, the stops 20 and 21 are used. 3 Cp f-ly, 3 ill.

Description

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Chapter 9. Masterpieces 10 and 11 of the distribution-balance 17 is fixed to the pin 19. On the switch 9, communicated with the hydraulic motor 12. The balance of the 16 stops are made 20 The distributor 9 has a drain 33. On and 21. 3 Cpt. f-ly, 3 ill.

The invention relates to the construction, in particular to machines for compacting building materials in the construction and repair of roads.

The purpose of the invention is to simplify the design and increase reliability.

FIG. 1 shows a self-propelled vibratory roller, general view; in fig. 2 is a section A-A in FIG. 1, rotated 90, the location of the unbalance in the phase; in fig. 3 - the same, the arrangement of unbalances in antiphase.

The self-propelled vibratory roller contains the frame 1, on which the leading vibrating shaft 3 is mounted by the riocon of shock absorbers 2, the guide roll 4 and the engine 5. The engine 5 drives the hydraulic pump 6, whose lines 7 and 8 are connected to two lines of the distributor 9, and the other two lines the distributor 9 is connected by lines 10 and 11 with the hydraulic motor 12. The latter rotates the unbalance shaft 13, which is installed in the spindle 14, pivots.

On the unbalanced shaft 13, an exciter is mounted in the form of unbalances 15–17. The unbalances 15 and 17 are rigidly fixed on the unbalance shaft 13, and the rotary unbalance 16 is supported by the unbalance shaft 13 through rolling bearings 18. The unbalances 16 and 17 are connected by means of a finger 17 fixed on the balance 17 and stops 20 and 21 fixed on the pivot unbalance 16. In this case the finger 19 contacts the stop 20 or the stop 21, which are located on the balance 16 diametrically opposite. The sum of static moments of unbalances 15 and 17, determined by the product of the mass of each unbalance 15 and 17 by its eccentricity, is equal to the static moment of the rotary unbalance 16. Engine 5 also drives a reversible variable-displacement hydraulic pump 22 of which is connected to the hydraulic motor

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25, a vibratory roller moving mechanism 26.

Lines 7 and 8 are connected to lines 10 and 11 via valve 9, the spool 27 of which has two pistons 28 and 29 attached to the power element — rod 30. The piston 28 of valve spool 27 is two-dimensional with a partition 31. The valve 9 has a pruluslin 32 and a drain line 33. The hydraulic pump 6 has an amplifier 34. The hydraulic pump 22 is equipped with a control mechanism, which includes an amplifier 35 connected by a hinge rod 36 to the control lever 37, which is provided with a cam 38 in contact with the distributor rod 30 9. The cam 38 is slotted, which are located placed on the same radius from the axis of rotation of the cam 38.

Self-propelled vibratory roller works as follows.

When moving the roller, lever 37 is deflected from the neutral (middle) position. In this position, the lever 37 of the hydraulic pump 22 supplies the working fluid, for example, to the main line 23 of the hydraulic motor 25 of the vibration roller moving mechanism 26. In this case, the rod 30 of the distributor 9 is in constant contact with the cam 38 under the action of the spring 32 and is fixed in one of its grooves. As a result, the lines 7 and 10, 8 and 11 communicate, and the piston 29 closes the drain line 33. The working fluid is supplied to the hydraulic motor 12, which rotates the unbalance shaft 13. Finger 19 unbalance 17 contacts the stop 20 of the pivot unbalance 16. The unbalance 16 is in phase with unbalances 15 and 17, their static moments and driving forces add up. The shaker 3 vibrates, compacted material.

For reverse movement of the roller, the control lever 37, together with the cam 38, is moved from one extreme position to another, a passage through the neutral position. Wherein

the rod 30 passes through the groove of the cam 3 and depresses the spring 32 of the distributor 9. At the time of passage of the groove of the cam 38, the rod 30 of the spool 27 moves to the right, separating the lines 7 and 10, 8 and 11. The lower chamber of the piston 28 connects the lines 7 and 8 of the hydraulic pump 6 with a drain line 33, the upper chamber of the piston 28 interconnects the lines 10 and 11 of the hydraulic motor 12. The hydraulic motor 12, continuing to work by inertia, distills through itself the working fluid that brakes it, as a result of which it starts to operate in the braking mode, and unbalance shaft 13 slows down its rotation. At the same time, the rotational speed of the imbalance 16 remains almost unchanged due to the rotation on the rolling bearings 18, as a result of which the unbalances 15 and 17 that are rigidly mounted on the unbalance shaft 13 and the rotary unbalance 16 are turned relative to each other.

In this case, the finger 19 of the unbalance 17 comes out of contact with the stop 20 of the depreciation 16, and, instantly turning at an angle of 180, comes into contact

with an emphasis 21 unbalance 16. The balances 15 and 17 are set in antiphase with the unbalance 16, i.e. The static moment and the driving force are equal to 0. The vibrator 3 stops vibrating. This ensures that the frame is reversed without forming holes on the material being compacted and the debalance shaft 13 is not stopped. Since the grooves of the cam 38 are made on the same radius, the distributor rod 30 after passing one the slot in the subsequent placement in the next slot is set to its original position. The distributor 9 again connects lines 7 and 10, 8 and 11, the hydraulic motor 12 receives power from the hydraulic pump 6, and the unbalance shaft 13 increases the speed of rotation, reaching its initial value. Finger 19 unbalance 17 instantly comes out of contact with stop 12 unbalance 16 and comes into contact with stop 20 unbalance 16. Debalans 15, 16 and 17 are reset.

At the same time, when the control lever 37 is set to the extreme position by means of the pull 36, the amplifier 35,

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the pump 22 of variable capacity, the hydraulic motor 25 and the movement mechanism 26 reverses the roller.

The subsequent reversal of the roller is carried out in a similar order.

Before the roller stops, in order to prevent the formation of dents on the sealing surface, the control lever 37 must be turned to the neutral position, in which the brush 30 is located in the groove of the cam 38, and held there until the unbalance shaft 13 stops completely and the hydraulic motor 26 of the displacement mechanism 26 stops.

Claims (3)

Invention Formula I. Self-propelled vibratory roller, containing a device for moving and reversing a vibratory roller with a hydraulic pump control mechanism and reversing vibratory roller, a vibration exciter, on the shaft of which is mounted with a limited rotation, unbalance, a device for controlling the static moment of the vibration exciter, associated with the hydraulic pump control mechanism reversing vibroroller is a two-way distributor, one of the lines of which is connected to the drain, hydraulic pump and hydraulic motor vibro An exciter with mainlines, characterized in that, in order to simplify the construction and increase reliability, the exciter is provided with a fixed unbalance fixed on it, mounted on one of the unbalances stops and fixed on the other balance by a finger for alternating interaction with the stops, and the distributor is made five-line, two lines of which are connected to the main hydraulic pump, one - with spruce, and two - with the main motor of the vibration exciter, while the distributor in one of its positions It is installed with the possibility of communicating the hydraulic motor lines with the corresponding hydraulic pump lines, and in a different position with the possibility of communicating the hydraulic motor lines among themselves, and the hydraulic pump lines between themselves and with the drain, with a pivot unbalance installed on the unbalance shaft coaxially. 2. The vibratory roller of claim I, characterized in that the finger is fixed on the fixed debalance, and the stops on the rotary debalance. 20 20 3. Vibrorolley according to claim 1, stating that the finger is fixed on the pivot unbalance, and the stops are on the fixed unbalance.  A. Vibrorolley according to claim 1, which is based on the fact that the stops are diametrically opposed to each other. 2 / 18