SU651907A1 - Tube- - Google Patents

Description

one

The invention relates to a device for cutting pipes, in particular, to devices for cutting pipes from the inside at a great depth.

A device for cutting pipes from the inside is known, comprising a housing inside which a spindle is mounted concentrically with hinged tool holders, equipped with rollers, interacting with a copier moving axially from a screw drive, the nut of which is concentrically placed inside the spindle and rigidly connected with ratchet wheel, interacting with the dog mounted on the spindle 1.

This device differs from the well-known in that, for the purpose of ease of operation and increase of labor productivity, an additional doggie is installed with the possibility of radial displacement, made in the form of a two-arm lever with central symmetry, interacting with one shoulder with the support installed inside the housing, and the other with a ratchet ring, made on the outer surface of the nut.

FIG. 1 schematically shows a general view of the device; in fig. 2 - section AA

FIG. one; in fig. 3 section bb in fig. one; in fig. 4 shows a section B-B in FIG. 3

The device contains a clamping mechanism 1 in the pipe, an outboard motor 2 of the actuator 3, the housing 4 inside which the spindle 5 is mounted concentrically with the hinged-mounted tool holders 6 interacting with the cam 7 fixed on the screw 8. The screw 8 is inserted into the nut 9 which is concentrically placed inside the spindle 5 and tightly connected to the snore wheel

10 interacting with the dog P. The dog 11 is mounted on the spindle 5 and kinematically connected with the roller 12 and the copier 13 mounted in the housing 4. In the slot 14, the spindle 5 is mounted with the possibility of radial displacement of the additional dog 15 made in the form of a double-arm with central symmetry. The dog 15 is secured in the slot 14 spring rings 16. Inside the housing 4 is installed spring-loaded

un 17. 17. The outer surface of the nut 9 is provided with an additional ratchet rim 18. A housing 4 is connected with a rod 19. The device is installed in the treated pipe 20.

The device operates as follows. The device is pushed into the pipe 20 to be treated with, for example, pgangi 19, through which air is also fed into the control unit 2. By rotating the rod 19 with the help of clamp mechanisms 1, the device is fixed inside the pipe 20. Turn on the drive 3 of the spindle rotation 5. During rotation, the spindle rolls around the roller 12 on the fixed copier 13, which eo pushes the swinging dog 11) 1e and turns the ratchet wheel 10 relative to the spindle 5. The ratchet wheel 10 rotates the nut 9. The nut 9 moves axially a screw 8 with a cam 7, which pushes the tool holder 6. Upon completion of the processing tool holders 6 under the action of the spring occupy the original position. Turning the legs 19 unseals the device and removes it from the pipe 20 being processed. After that, you need to return the screw with the copier to its original position, i.e. set the device to process the next pipe. To do this, press the stop 17, and screw.8. rotate in the direction opposite to the worker. The screw 8 transmits the rotation to the nut 9 ,. the additional ratchet ring 18 comes into contact with the dog 15 and unfolds it until the second shoulder of the dog engages with the stop 17. In this position, the nut 9 and the spindle 5 remain stationary relative to the body 4, and

screw 8 with cam 7, twisting out of nut 9, takes the initial position. This embodiment of the design of the device increases the ease of operation and. Labor productivity.

Claims (1)

1. USSR author's certificate No. 505529, cl. B 23 D21 / 14, 1974.