Sabornie device for machines with a screw working body

 

The invention relates to mining, namely sabumnim devices for machines with a screw working body. The device includes a clamping pads saddle shape, the arms rotate, the drive rotation of the levers, the centering rollers. At least one of the levers rotate, and at least one of the parties with respect to the axis of the fixing terminal, perpendicular to the inner and outer surfaces of the lever rotation, posted by rod-end stop terminal, the working end of which protrudes from the inner surface of lever rotation for engagement with clamping nuts with his butt. The limiter is made movable relative to the inner and outer surfaces of the lever rotation and provided with a device for changing the length of the working end. Opposite the working end of the limiter is placed with its end face in the plane of the outer surface of lever rotation. The invention provides improved efficiency drilling screw working body with partial wear of the spirals in diameter. 4 C.p. f-crystals, 4 Il.

The invention relates to mining, namely drilling machines with screw working body, and can be used for the including clamping jaws saddle shape, associated with the levers rotate, the drive rotation of the levers and rollers of a certain length for contact with the spiral of the working body, attached to the ends of the clamping blocks, the axis of which is parallel to the longitudinal axis zabernovo device (see and.with. The USSR № 1647116, CL E 21 7/24, 1991). This solution due to the rolling freely rotating rollers can reduce energy consumption by rotation of the working body and the wear of the spiral drilling screws.

The disadvantage of this technical solution is offset from the axis drilling (bias) screw the working body with partial wear on the diameter when it is centered in saborna device, which reduces the accuracy of drilling wells and the performance of drilling operations.

The closest technical solution is sabornie device for machines with a screw working body, comprising clamping jaws saddle shape, each of which is freely mounted on the levers rotate with the possibility of rotation when the wear of the spiral screw of the working body in diameter, without moving the latter axis drilling on some angle around the axis of the mounting clamp pads that are parallel to the longitudinal axis zabernovo device, the actuator turning Rychagov (see description of the invention the application No. 94033121, CL E 21 7/24, 1996). This solution due to the free installation clamping pads on the levers rotate allows you to precisely center the worn in diameter augers, thus reducing the time auxiliary operations and improve overall performance of drilling operations.

The disadvantage of this technical solution is the large complexity of the control (frequent measurements, damp ground and so forth) of the diameter of the worn spiral auger as specified sabornie device can capture screws with wear on the diameter over limit (over 10%). This can lead to the violation of issuing drilling trivia screw from the well, zastarovje and jamming of the screw of the working body.

The invention is aimed at improving the efficiency of drilling screw working body with partial wear of the spirals in diameter.

This goal is achieved by the fact that in saborna device for machines with a screw working body, comprising clamping jaws saddle shape, each of which is freely mounted on the levers rotate with the possibility of rotation when the wear of the spiral screw of the working body in diameter, without moving the latter with the axis of the Bur is STS, drive rotation of the centering levers and rollers mounted on the ends of the clamping pads parallel to the longitudinal axis zabernovo device, at least one of the levers rotate, and at least one of the parties with respect to the axis of the fixing terminal, perpendicular to the inner and outer surfaces of the lever rotation, posted by rod-end stop terminal, the working end of which protrudes from the inner surface of lever rotation for engagement with clamping nuts its end, and the rotation limiter clamping pads made movable relative to the inner and outer surfaces of the lever rotation and provided with a device for changing the length of the working end, and opposite the working end of the rotation limiter terminal is placed with its end face in the plane of the outer surface of lever rotation. And opposite to the working end of the rotation limiter terminal is connected with its end face with a switch control mechanism of the rotation of the screw of the working body, placed on the arm rotation. In addition, when the centering screw working bodies with a diameter less than the core size, inclusive, igncom arm rotation, and when the centering screw working bodies with a diameter greater than the core size, the rotation limiter clamping pads are placed respectively on the right from the axis of the fixing terminal. Also, the rotation limiter clamping jaw fixed relative to the inner and outer surfaces of the lever rotation with locking rings and springs, and the device changes the length of the working end of the rotation limiter clamping pads made in the form of an adjusting screw with a lock nut screwed into the end of the working end of the rotation limiter terminal.

In Fig. 1 shows the proposed sabornie device (top view), and Fig. 2 is a section along a - a of Fig. 3 is a section along B-B of Fig.4 - General view of the rotation limiter 10 of the clamping pads.

Sabornie device for machines with a screw working body 1 contains clamping jaws 2 saddle shape associated with the levers turn 3, which can be rotated relative to the axis 4 by means of the actuator 5, such as a hydraulic cylinder, and the centering rollers 6 for contact with the coil 7 of the working body 1 attached to the ends of the clamping pads 2, the axis of which is parallel to the longitudinal axis zabernovo device. Each of the clamping blocks 2 swobo longitudinal axis zabernovo device, and between the clamping blocks 2 and levers rotate 3 posted by return spring of the spring 9. At least one lever of rotation 3 and at least one side of the axis of the mounting 8 is installed rod limiter 10 of rotation of the clamping pads 2. He placed perpendicular to the inner 11 and outer surfaces 12 of the levers turn 3 and fixed to them by means of the locking ring 13 and springs 14. The working end 15 of the limiter 10 of rotation of the clamping pads 2 protrudes from the inner surface 11 of the levers turn 3 and contains the device to change the length of the working end 15 in the form of an adjusting screw 16 with a nut 17 screwed into the end 18. Opposite the working end 19 of the limiter 10 of rotation of the clamping pad 2 is placed with its end face 20 in the plane of the outer surface 12 of the levers turn 3 and can be associated with the switch 21 of the system control mechanism for the rotation of the screw of the working body 1 placed on the lever rotation 3.

Works sabornie device as follows. Depending on the conditions of production of drilling operations at the mine, the type of drilling rig and the adopted technology limiter (Lee) 10 turning the clamping pads are placed on one or two RYR, inclusive, the limiter 10 of rotation of the clamping pad 2 is placed to the left of the axis of the mounting 8 of the clamping pads 2 (see Fig. 1), and the use of a screw working bodies 1 diameter greater than the core size, respectively to the right from the axis of the mounting 8 of the clamping pads 2. In both cases, the required length of the working end 15 of the limiter 10, acting on the inner surface 11 of the lever rotation 3 is the condition of possibility of the interaction of the latter with its end face 18 and the clamping block 2 when the centering screw the working body 1 reached the maximum wear helix 7 in diameter. Install the required length of the working end 15 of the limiter 10 of rotation of the clamping pads 2 is carried out by means of an adjusting screw 16 with a nut 17 screwed into the end face 18.

Before the process of drilling new screw working body 1 is lowered all the way into the drilled surface, and then drive 5 levers rotate 3 are rotated around the axes 4 and its clamping blocks 2 saddle shape closer to the moment of contact between the external surfaces of the centering rollers 6 with the end surface of the spiral screw 7 of the working body 1. After that, turn the mechanism VR. After drilling to a depth of 1 to 2 m without interrupting the drilling process, the actuator 5 brings the ends of the levers turn 3, and removes the clamping jaws 2 with centering rollers 6 from the screw of the working body 1. In this diluted state they are located prior to drilling the next well.

In case of partial wear of the spiral screw 7 of the working body 1 according to the diameter of the clamping jaws 2 are rotated around the axis of the mounting 8, without interfering with the rotation limiter clamping pads 10 and overcoming the resistance of the leaf springs 9, and provide contact all of the centering rollers 6 clamping pads 2 without offset screw the working body 1 with the axis of drilling. After removal of the clamping pads 2 screw from working body 1 of the latter under the action of the leaf springs 9 are rotated around the axis of the mounting 8 and occupy its original position.

When the centering screw the working body with a diameter less than the core size, and including, the ultimate wear helix 7 and the diameter of the clamping jaws 2 are rotated around the axis of the mounting 8 for communication with the working end 15 of the limiter 10 clamping pads 2, which is located to the left of the axis of the mounting 8 of the clamping blocks 2, between this axis and the end of the growling is 14 and is moved relative to the inner 11 and outer surfaces 12 of the levers turn 3. When opposite the working end 19 of the limiter 10 clamping pads 2 is an end face 20 at the outer surface 12 of the levers turn 3, which serves as a basis for termination of the process of drilling and replacement screw the working body 1 with extreme wear helix 7 in diameter. Automation control screw wear of the working body 1 is achieved in the case of interaction between end 20 opposite the working end 19 of the stopper 10 with switch 21 (limit switch, contact, etc) control mechanism of rotation of the screw of the working body 1. In this case, the disconnection or the inability to enable rotation of the screw mechanism of the working body i when the drilling of the wells will serve as the basis for replacement of the latter.

Similarly implemented centering screw the working body 1 with a diameter greater than the core size. In this case triggered the limiter 10 of rotation of the clamping blocks 2, placed, respectively, to the right of the axis of the mounting 8 of the clamping pads 2.

Offer sabornie device due to the operational control of wear on the diameter spiral screw the working bodies of any size can reduce the complexity of estimating the marginal SOS is isit the drilling performance. In addition, elimination of the possibility of drilling a screw working body with extreme wear of the spiral diameter prevents its tastebook and jamming in the bore, which increases the durability of the screw of the working body, also helps to increase productivity and, in General, increases the efficiency of a screw working bodies until they are worn.

Claims

1. Sabornie device for machines with a screw working body, comprising clamping jaws saddle shape, each of which is freely mounted on the levers rotate with the possibility of rotation when the wear of the spiral screw of the working body in diameter, without moving the latter axis drilling on some angle around the axis of the mounting clamp pads that are parallel to the longitudinal axis zabernovo device, the drive rotation of the levers, the centering rollers mounted on the ends of the clamping pads parallel to the longitudinal axis zabernovo device, characterized in that at least one of the levers rotate, and at least with one of the parties with respect to the axis of the fixing terminal, perpendicular to the inner and outer surfaces of the lever powd the inner surface of lever rotation for engagement with clamping nuts with its end face, without the stop of rotation of the clamping jaw made movable relative to the inner and outer surfaces of the lever rotation and provided with a device for changing the length of the working end, and opposite to the working end of the rotation limiter terminal is placed with its end face in the plane of the outer surface of lever rotation.

2. The device under item 1, characterized in that opposite the working end of the rotation limiter terminal is connected with its end face with a switch control mechanism of the rotation of the screw of the working body, placed on the arm of the rotation.

3. The device under item 1, characterized in that when the centering screw working bodies with a diameter less than the core size, inclusive, the rotation limiter terminal is placed to the left from the axis of the fixing terminal, between this axis and the end of lever rotation.

4. Device according to any one of paragraphs.1 and 3, characterized in that when the centering screw working bodies with a diameter greater than the core size, the rotation limiter clamping pads are placed, respectively, to the right of the axis of the fixing terminal.

5. The device under item 1, characterized in that the rotation limiter saganaga rings and springs, and the device changes the length of the working end of the rotation limiter clamping pads made in the form of an adjusting screw with a lock nut screwed into the end of the working end of the rotation limiter terminal.

 

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