SU1763351A1 - Winch - Google Patents

Description

one

(21) 4808514/11

(22) 04/02/90

(46) 09/23/92. Bul ISfe 35

(71) Institute of the problems of reliability and durability of machines of the Academy of Sciences of the BSSR and Ishimbay Plant of Transport Engineering

(72) B.V. Gritskevich, V.K. Mikalutsky, S.N. Poddubko, V.I. Rozhin and O.P. Tsarev

(56) USSR Copyright Certificate No. 439468, cl. In 66 D 1/22, 1972.

(54) WINCH

(57) Uses: in drive winches. The winch contains a fixed support 1, on which is located a cable drum 2 with a planetary gear embedded in it. The gearbox includes an input shaft 4 with brake 5 located on it, the first planetary gear; containing a kinematically interconnected central wheel 8 with loading

2

the teeth connected to the input shaft 4 drove 13 with satellites 14 and two central wheels 15 and 16 with internal teeth, one of which 15 is connected with a fixed bearing 1 of drum 2. The second planetary gear of the gearbox contains drove 17 with satellites 18 and central wheel 19 with internal teeth. In this case, the input shaft 4 is made with the possibility of alternately connecting with said gears. In the first gear, the satellites 14 are single-fold, the second central wheel 16 with internal teeth is connected with the drum 2. In the second gear, the central wheel 19 with internal teeth is connected with the carrier 13 of the first gear, and the central wheel 8 with external teeth is movable the axial direction with the possibility of alternate cinemat and with the satellite with the 14 first and second gears, 1 slug.

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The invention relates to lifting and transporting and building machines and can be used as a winch drive,

The pipelayer winch is known, which contains a planetary gearbox with two planetary rows, the central wheels with internal teeth of which are connected to the cable drum (see Pipelayer IM Vashchuk et al. M .: Mashinostroenie, 1989; p.81, Fig. 32 ). The planetary gearbox in the specified winch has a limited gear ratio (not more than 60), in addition, there is no mechanical reverse, which reduces the operational capabilities of this winch.

The closest to the technical essence of this invention is a winch (1) containing a rope drum located on a fixed support with a planetary gear embedded in it, including an input shaft with a brake located on it, the first planetary gear containing kinematically interconnected central wheel with external teeth, connected with the input shaft, drove with satellites and two central wheels with internal teeth, one of which is connected with the fixed support of the drum, the second planetary Transferring comprising a satellite carrier and a central wheel with inner teeth, wherein the input shaft is adapted to be alternatively connected to said gears. The disadvantage of the prototype is the complexity of the design due to the presence in the planetary gear of three central wheels with external teeth and the need to use two engines for driving.

The aim of the invention is to simplify the design of the winch.

This goal is achieved by the fact that a winch containing a rope drum located on a fixed support with a planetary gear embedded in it, including an input shaft with a brake located on it, a first planetary gear containing kinematically interconnected central wheel with external teeth, connected with the input shaft, drove with satellites and two central wheels with internal teeth, one of which is connected with the fixed support of the drum, the second planetary gear containing drove with sat llitami and central wheel with inner teeth, wherein the input shaft is adapted to be alternatively connected to said gears, the first transmission satellites are made one- girth, the second central wheel with inner teeth of the first transmission associated with a drum, a wheel with a central e

the inner teeth of the second gear is associated with the first-gear carrier, and the central wheel with the outer teeth is movable in the axial direction with the possibility of alternate kinematic communication with the first and second gears.

By making the central wheel with the outer teeth movable in the axial direction, as well as the corresponding change in the connections between the teeth of the first and second gears, one transition gear and one reverse gear are provided in the gearbox. When this is achieved, the simplification of the design, as

0, the planetary gearbox contains only one central wheel with external teeth, whereas in the prototype there are three such wheels. The planetary gearbox has an optimal ratio between the gear ratios of the forward and reverse gears, at which the reverse gear ratio is 15-30% higher than the transition ratio gear ratio, which allows for the accelerated rotation of the drum at idle speed.

0 go.

The drawing shows the winch design.

The winch contains a fixed support 1, which is installed with the possibility

5 rotation cable drum 2. The drive motor 3 is connected to the input shaft 4, on which brake 5 is located. Intermediate shaft 7 connected to the input shaft 4 is connected via a movable spline joint 6 to the central wheel 8 with outer teeth.

The shaft 7 is moved in the axial direction by means of a control mechanism consisting of a lever 9, tipper 10, pusher 11

5 and the thrust bearing 12. The planetary reducer includes drovers 13c satellites 14, with which the central wheels interact with the inner teeth 15 and 1 6. The central wheel 16 is connected to

0 with a drum 2, and the central wheel 15 with a fixed support 1. The second planetary series includes the carrier 17c with satellites 18 and the central wheel 19 with internal teeth, connected with the carrier 13 of the first

5 planetary row yes. The carrier 17 is connected to the fixed support 1.

The winch works as follows. Engine 3 drives the input shaft 4 and the central wheel 8. In the neutral position, the central wheel Ј

Ui

occupies intermediate positions between the satellites 14 and 18. The drum 2 and the link of the planetary gearbox are stationary, and the shafts 4, 7 and the central wheel 8 rotate idle. To engage the forward gear, the shaft 7 is moved to the extreme left position, while the central wheel 8 engages with the satellites 14, driving them. The satellites 14, driven around the stationary central wheel 15, drive the central wheel 16 and the associated drum 2. The gear ratio of the gearbox is equal to

Zie (Zi5 + Z8) Ze (Zi6 - Zis) where Zs, Zis, Zie - the number of teeth of the central wheels 8, 15, 16.

When moving to the extreme right position, the central wheel 8 engages with the satellites 18. In this case, the movement is transmitted through the central wheel 8 to the satellites 18, which rotate around the axes with the fixed carrier 17 and set in motion the central wheel 19, which rotates in the opposite direction in relation to the input shaft 4 and drives the carrier 13 with the satellites 14. The satellites 14 roll around the stationary central wheel 15 and drive the central wheel 16 with the drum 2, which rotate into the shaft and the opposite side with respect to the input shaft 4. The gear ratio for reverse gear is calculated according to

andZie Zi9

I Z8 (Zi6-Zi5)

where Zig is the number of teeth of the central wheel 19.

Selection of the number of teeth of the central wheels provides the required gear ratios. The central wheel 8 is moved using a lever 9, under the action of which the pusher 11 moves and through the thrust bearing 12

moves the shaft 7 in the axial direction.

Thus, the planetary reducer provides both working and idle reverse rotation of the cable drum. At the same time, a simplified design has been achieved, since the planetary gearbox contains the minimum number of central wheels.

Claims (1)

Formula of invention on a fixed support, a cable drum with a planetary gear embedded in it, including an input shaft with a brake located on it, the first a planetary gear containing kinematically interconnected central wheel with external teeth connected to the input shaft, drove with satellites and two central wheels with internal teeth, one of which is associated with a fixed drum bearing, a second planetary gear containing the carrier with satellites and a central wheel with internal teeth, with input the shaft is arranged to be alternately connected with said gears, characterized in that, in order to simplify the construction, the first gear satellites are made one-fold, the second central wheel with internal teeth of the first gear is connected with the drum, the central wheel with internal teeth of the second gear is connected with the driver of the first gear, and the central wheel with the external teeth is axially movable with the possibility of alternate kinematic connection with the first and second gear satellites.