SU1384345A1 - Pulsed loader - Google Patents

Abstract

The invention relates to a vibration technique and can be used in devices for driving torsional vibrations. The aim of the invention is to increase the stability in operation by providing a constant number of loading cycles between periodically repeated zero amplitudes of the beating of the dynamic moment of torsional vibrations and simplifying the design. The impulse loader comprises a housing 1, a shaft 2 housed therein, a planetary gear including fixed central wheels 4 with a number of Z4 teeth and 5 with a number of teeth Zs fixed in the housing 1, and a carrier 6 with unbalance satellites installed on it 7. In each pair of satellites, the unbalance satellite 8 with the number of teeth Zs is engaged with the wheel 4, and the unbalance satellite 9 with the number of teeth Zg with the wheel 5. The number of teeth of the satellite 8 and 9 and Kq, iec 4 and 5 is chosen from the ratio .g / / Z Zg-ZgZs, where N is the number of loading cycles audio the period between the zero values of the amplitude dynamic torque HA laden. As the object 3 rotates, an alternating dynamic moment with a beating, amplitude is applied to it. 2 Il. g cl

Description

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The invention relates to a vibration technique and can be used in devices for driving torsional vibrations.

The aim of the invention is to increase the stability of operation by ensuring that the number of cycles is constant between the periodically repeated zero amplitudes of the beat of the dynamic moment of torsional vibrations and the simplification of the structure.

FIG. Figure 1 shows the kinematic scheme of the pulse load; in fig. 2 is a graph of the change in the amplitude of the dynamic moment over a half-period of the beating.

The impulse loader comprises a housing 1, a shaft 2 placed therein, intended to communicate with the object 3, and a gear two-row planetary gear including fixedly mounted transmitted through the object 3 and the shaft 2 drove 6 with the satellites mounted on it diametrically opposite to pairs of satellites - balances 7. Unbalance satellites 8 and 9,

Running around the fixed central wheels 4 and 5, create on the rotating object 3 an alternating dynamic moment. Due to different gearing ratios, the unbalance satellite 8 — the central wheel 4 and the unbalance cat10 tell-9s — the central wheel 5 — the unbalance satellites 8 and 9 rotate around their axes at different speeds. A small difference in the transmission ratios of the satellites and wheels leads to a small difference in the frequencies of the dynamic moments created by the unbalance satellites 8 and 9, the summation of which on object 3 leads to a beating of the amplitude of the dynamic moment of torsional oscillations (see Fig. 2). Impulse loader has pros15

In the housing 1, the first centrally arranged structure allows the rotation of 4 with the number of teeth Z4, the second central wheel 5 with the number of teeth Zs, and rigidly connected to the shaft 2 the carrier 6 with the balance of the unbalanced satellites installed on it 7. In each pair of satellites, the first unbalance satellite 8 with the number of teeth Z is in engagement with the first central wheel 4, and the second unbalance satellite 9 with the second central wheel 5. The number of teeth of the unbalance satellite 8 and 9 and central wheels 4 and 5 in Chosen from ratio

25

By means of a gear object, by means of a gear planetary gear with a given number of teeth of the wheels and teeth of the satellites, the constancy of the load cycles between periodically repeated zero amplitudes of the beats of the dynamic moment.

Claims (2)

Invention Formula A pulse loader comprising a housing 30, a shaft accommodated therein, intended to communicate with the object, and a gear two-row planetary gear train comprising central wheels, the first of which is fixedly mounted and the carrier rigidly connected to the shaft and mounted 35 diametrically opposite pairs of unbalanced satellites, the first of which is associated with the first central wheel, and the second with the second central wheel, characterized in f, which, in order to increase the stability of the working Z5-NUMBER of teeth of the second central 40 you by ensuring the constancy of the number N Z8Z9 / (Z4Z5-Z8Z5), where Zg is the number of teeth of the first unbalance satellite 8; Zg is the number of teeth of the second unbalance satellite 9; Z4 - the number of teeth of the first central wheels 4; wheels 5; N is the number of loading cycles in the period between zero values of the amplitude of the beating of the dynamic loading moment. The gear ratios between the unbalance satellite 8 and the central wheel 4 and the unbalance satellite 9 and the central wheel 5 are respectively   A + 1 A Z4 A A-1 50 cycles of loading between. periodically repeating zero values of the amplitude of the beating of the dynamic moment and the simplification of the structure, the second central wheel is fixed, and the numbers of teeth of the wheels and satellites are chosen from the ratio N Z8Z9 / (Z4Z9-Z8Z5), where ZB is the number of teeth of the first unbalance satellite; ZQ - NUMBER of teeth of the second unbalance satellite; where A is a number related to the number of loading cycles by N ACHA. . Pulse loader works as follows. Object 3 is connected to drive 10 and shaft. 2. When the drive 10 is running is transmitted through object 3 and shaft 2 to carrier 6 with diametrically opposed pairs of satellites installed with balance offsets 7. Debalance satellites 8 and 9, rolling around on the fixed central wheels 4 and 5, create on the rotating object 3 an alternating dynamic moment. Due to different gearing ratios, the unbalance satellite 8 - the central wheel 4 and the unbalance satellite 9 - the central wheel 5 - the unbalance satellites 8 and 9 rotate around their axes at different speeds. A small difference in the transmission ratios of the satellites and wheels leads to a small difference in the frequencies of the dynamic moments created by the unbalance satellites 8 and 9, the summation of which on object 3 leads to a beating of the amplitude of the dynamic moment of torsional oscillations (see Fig. 2). Impulse loader has a request this design and allows for rotation By means of a gear object, by means of a gear planetary gear with a given number of teeth of the wheels and teeth of the satellites, the constancy of the load cycles between periodically repeated zero amplitudes of the beats of the dynamic moment. Invention Formula five 0 five cycles of loading between. periodically repeating zero values of the amplitude of the beating of the dynamic moment and the simplification of the structure, the second central wheel is fixed, and the numbers of teeth of the wheels and satellites are chosen from the ratio N Z8Z9 / (Z4Z9-Z8Z5), where ZB is the number of teeth of the first unbalance satellite; ZQ - NUMBER of teeth of the second unbalance satellite; Z4 - the number of teeth of the first central wheel; Zs is the number of teeth of the second central wheel; N is the specified number of loading cycles for the period between zero values of the amplitude of the beating of the dynamic loading moment. / / / h FIG. 2