SU1258991A1 - Gear change control for step-down reducer of geophysical hoist - Google Patents

Description

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The invention relates to field and geophysical equipment. particular to the launch and lifting devices and can be used in the oil industry.

The aim of the invention is to increase the reliability and durability of the speed switch of the reduction gear of the geophysical lift.

FIG. 1 shows a reduction gearbox with the right pair of gears turned on; in fig. 2 and 3 are the locations of the hubs in the cross sections of the driven shaft; in fig. 4 - sweep the surface of the rod with a longitudinal & t canvas for balls.

The device consists of a lever 1, which moves in the hollow shaft 2 a rod 3, under the action of which spherical balls 4 and 5 move in holes made in the driven shaft 2, perpendicular to its geometric axis. Gears 6 and 7, in the shtsecey grooves 8 and 9 are included riki 4 and 5, are constantly in the ashes of scientific research institutes with gears of 10 and 11,

The gears 10 and 11 are rigidly mounted on the drive shaft 12, and the rotation of the twin-wheel drive with constant speed. The slotted grooves I and 9 under the balls and the holes under them (sections of Fig. 2) are offset relative to each other by an angle o (in ---

 . .. , P "- .

where and is the number of balls per gear ... . . . . . . . /

The rod 3, with its 1Sch1 on its surface, are the points 13 and 14, can sJafm-mother three positions; Two Extreme A, B and Neutral 8.

The sprocket moment from the force G, pa; is applied to the sprocket 15, set on the output ifiaiTf 2, at the weight of the descent in the Squadia geophysical location and cable.

The speed switch Ponzhayug-his gearbox works as follows.

To crawl on the shaft 2 the required number of revolutions (for example, ttn is the minimum; 1, it is necessary to move the stem 3 from the neutral position B to the right with the lever t in the position B,

The design of such a switch is designed for low-mounted gearboxes that can be installed in control units and cannot be used in geophysical lifts for the following reasons:

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first, Only a limited number (for example, four) of the balls carry the load; secondly, the holes for all the balls in the body of the driven shaft are polyenes in one cross-sectional plane, which reduces the shaft strength in this section for a torque; thirdly, such an arrangement reduces the durability and operability of the gears, since the same area of the surface of the gears does not come into contact with the balls.

In the proposed device, the strength of the driven shaft is enhanced due to the ts spacing of the holes for the old people along the axis at a distance not less than the ball diameter, and also due to their displacement, relative to each other by

360

20 angle -. For simultaneous engagement of the balls in the slotted grooves of the gears, grooves (longitudinal grooves) are made on the rod, and the number of spline grooves corresponds to the number of 25 balls under the gear.

When moving the stem 3 to the right, the spherical balls 5, which are located in the grooves, 14 of the stem, will be squeezed out of them and will go into slotted grooves 9 gear

7 (Fig. 1 and 3) and gear 7 will drive the shaft 2 through the beads 5. The balls 4 at this time will be in the grooves 13 of the rod 3, as they will be pressed by the inclined sides of the gears 8 and 6 the possibility of jamming gears that rotate at different angular speeds (Fig. 2) will be excluded.

To switch from this speed

 . (position B) to another (position A), you must first move lever 1 to position B, i.e. in the neutral position, when the balls 4 and 5 are in the holes in the utter cavity, i.e. in the grooves 13 and 14 of the rod 3.

When the stem 3 moves to the left (position A), the balls 5 will be recessed, and the balls 4 will be squeezed out of the grooves 13

 and will go into the gearbox grooves 8 of the gear 6. And the gear 6 through the balls 4 will cause the rotation of the shaft 2.

The advantages of the image are as follows:

5 1. With this design (spacing the balls in different planes of the cross section of the driven shaft, when only one ball is in one

the cross section and the offset holes for the balls in the driven shaft on

; 360.

The angle o (- - - f can transmit significant torques, which cannot be made known to the device.

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2. All the balls, despite their location in different sections, are engaged simultaneously | 1о.

3. The strength of the driven shaft is enhanced, which gives an increase in the reliability of the gearbox in the chain.

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FIG. 2

MM

Editor V. Ivanova

Compiled by I. Karbachinsk

Tehred L. OleynkKorrektor. Shekmar

Order 5101/33 Circulation 548 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

GEOPHYSICAL LIFT REDUCER SPEED SELECTOR SWITCH, comprising a drive shaft, additional holes are made in the gear gears and on the driven shaft, and additional grooves are made on the rod, and the holes and grooves are located at a relative distance from each other along the shaft and its circumference, the diameter of the ball or more. •and*.?