SU1227864A1 - Belt gearing to drilling machine - Google Patents

Description

 . one

The invention relates to gears for communicating rotational motion.

The purpose of the invention is to simplify the design of the belt drive.

FIG. 1 shows a drilling machine using a belt drive; in fig. 2 is a view A of FIG. one; in fig. 3 - section bb in Fig.2; in fig. 4 shows a section B-B in FIG. 3; in fig. 5 is a view of FIG. four; figure 6 - the position of the cassette when it is rotated in the horizontal plane; figure 7 - the position of the cassette when it is rotated in a vertical plane; in fig. 8 - the position of the cassette when it is rotated in the horizontal plane.

The belt drive 1 is used in a drilling machine comprising a base 2, on which through the base

3 installed column 4. On the column

4Installed case 5 of the drilling head. The housing 5 by means of the nut 6 has the possibility of vertical movement along the column 4, on the outer cylindrical surface of which a thread is made. On the housing 5 of the drilling head fixed plate 7, on which is installed the electric motor 8 of the main drive. The motor 8 is connected via a belt drive 1 with an intermediate shaft 9, which serves as a driving link for the spindle 10. The spindle 10 with its bearings is assembled in quill 11 connected to the feeding mechanism 12 (quill moving mechanism). The belt drive 1 is made in the form of a quick-release cassette containing a strip 13, on which axes 14 and 15 are rigidly fixed.

On axles 14 and 15, pulleys I - rv of a belt drive are installed on both sides through rolling bearings 16-19.

Pulleys I-IV and bearings 16-19 on axles 14 and 15 are supported by rings 20-27. Each pair of pulleys 1, W and ji, IV is equipped with respectively belts 28 and 29. Belts 28 and 29 are tensioned by tension rollers 30 and 31, which are mounted on bar 13 through levers 32 and 33 axles 34 and 35. The tension of the belts is created by the rods. 36 and 37. The hubs of the pulleys .1 -IfVc of their outer side have mounting parts d, at the ends of which there are diametrically located protrusions 38 with inclined side surfaces at an angle f (equal to 5).

64. 2

The landing parts d and the protrusions 38 of the pulleys are their docking parts - they interact with the response identically made docking parts, the landing part d and the protrusions 39 of the drive units of the electric motor 8 and the spindle 10. The drive link of the electric motor 8 is the half coupling 40, which through

1POL 41 is mounted on the shaft of the electric motor 8. The driving link of the spindle 10 is the intermediate shaft 9, which, through bearings 42, supported by nut 43 and bushings 44 and 45, is installed in the housing 5 of the drilling head. Movement from the intermediate shaft 9 to the spindle 10 carried out through the pomeranian tongs, made in the hole of the intermediate shaft

So

and on the shank spindle 10.

In order to meet the safety requirement, the main drive mechanism is enclosed by a flap cover 46.

When installing the quick-release cassette using the mounting parts on the shaft of the electric motor and the shaft of the spindle 10, rotation from the electric motor 8 is transmitted through the lugs 38 and 39 of the half coupling 40 to the pulley 1. Next, the rotation through the belt 28, the pulley of the IG via the connecting parts of the pulley 111 and the intermediate shaft 9 is transmitted to the shaft 9i, which in turn, through the splines, transfers the rotation to the spindle 10. The feed or movement of the quill 11 in the axial direction is carried out manually through the mechanism 12 of the feeds.

The change in the speed of rotation of the spindle is as follows.

The starting position of the cassette is the position shown in FIG. 3, which corresponds to the first speed.

ishyndel

To change the speed, fold out the cover 46, remove the cassette and, depending on the speed required, or turn it in a horizontal direction.

plane, or turn over in a vertical plane. When the cassette is rotated in the horizontal plane from the position indicated in FIG. 3.0 and pulley pulleys I and III, respectively, with drive units of the shaft 9 and half coupling 40 receive a second speed.

When the cassette is inverted in the vertical plane from the position shown in FIG. 6, and docking. The VOV II and IV caps, respectively, with the drive links of the shaft 9 and the half coupling 40 (Fig. 7) receive a third speed. When the cassette is rotated in the horizontal plane from the position shown in FIG. 7, and the coupling of pulleys IV and II, respectively, with the drive links of the shaft 9 and the half coupling 40 (Fig. 8), receive a fourth speed.

The cassette is quickly removed, rotated and reversed.

1227.8644

a place. For quick installation of the cassette and docking, the projections on the pulleys are narrow and the grooves on the followers. The links x, where the protrusions of the pulleys enter, 5 are wide. In addition, to keep the cassette in a vertical position, the sides of the protrusions are made inclined, as a result of which, under the action of the transmitted moment, the cassette all the time is pulled to the drive links of the spindle and the electric motor.

eight

J3 34

32

37 30

37 35 Figure 2

 r turned

ФтгЯ

5

/

I

.

FIG. 6

sh

7

Kl / 9

W

Fig 8

Compiled by G.Sirotovska Editor A.Dolinich Tehred V.KadarKorrector V.Sinitska

Order 2276/37 Circulation 880 Subscription

VNIIPI USSR State Committee

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

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

Claims (1)

A BELT TRANSMISSION TO A DRILLING MACHINE, containing a driving and driven pulleys covered by a belt and a belt tensioning mechanism, which, in order to simplify, the transmission is made in the form of a cartridge consisting of a bar with axles bearing bearings, on each of which pulleys are installed, and the belt tension mechanism is placed on the bar between the axles, and diametrically located protrusions with inclined side surfaces for interacting with the spindle protrusions are made on the outside of the hubs of the pulleys at their ends A shaft of the machine and the motor.