SU1643699A1 - Telescoping mast - Google Patents

Description

I

(21) 4682851/03

(22) 04.24.89

(46) 04.23.9U BC. Number 15

(71) Scientific and Production Association Seismotechnology

(72) A.A., G.Asan-Jalalov, A.P.Androsenko, A.P.Mezheniekov and A.A.Mazhar

(53) 622 (088.8)

(56) USSR Copyright Certificate No. 1452921, cl. E 21 B 15 / QO, 1987.

USSR Author's Certificate No. 1452922, cl. E 21 B 15/00, 1987.

(54) TELESCOPIC TOWER

(57) The invention relates to a drilling technique. The purpose of the invention is to improve the performance of the tower by increasing the reliability of the mechanism for fixing its sections. The tower contains the outer fixed section (NS) 7 and placed in it with a gap the inner movable section (PS) 8,

as well as their fixation mechanisms. The locking mechanism contains a spring-loaded latch in the form of a finger 21 installed in the opening of the HC 7, which interacts with the pusher (T) 12, made in the form of a triangular plate. One of its vertices is hinged on the lower end of PS 8. Adjacent to this vertex, the hinge 22, the sides 16 and 17 are arranged to abut on the said end. The outer side 16 T 12 is adapted to be periodically placed in the gap between NA 7 and PS 8. When the tower is installed, the extension mechanism PS 8 is extended from NA 7. The finger 21 with the end surface 24 slides along PS 8. The supports 20 at the lower end of PS 8 are higher finger 21. Finger 21 is mixed by spring 28 in the direction of PS 8, This movement takes place before contact of the end surface 24 of finger 21 with side 16 T 12 and after turning T 12 until contact of side 17 T 12 with stop 22 at end of PS 8. Then PS 8 lowered to the contact of the fingers 21 with supports

20ortsy PS 8. Sections are fixed and the tower is ready to work. Dp of folding of the tower PS 8 lifts, the end surface 24 of the finger 21 slides on the side 16 T 12. The finger 21 is below the angle 19 T 12, the Finger 12 moves in the direction of PS 8 and it lowers. The finger 21 is in contact with the side 18 T 12. As the PS 8 descends, the side 18 T 12 presses the finger

21 in the direction of the NA 7. This happens until the finger 21 interacts with the PS 8. The PS 8 further lowers. 1 Cp f-ly, 4 ill.

03

The invention relates to drilling, namely to telescopic towers.

The purpose of the invention is to improve the performance of the tower by increasing the reliability of the mechanism for fixing its sections.

FIG. 1 shows the device, a general view; in fig. 2 - the node in figure 1; in the position of the movable section preceding the position of fixation of the sections relative to each other; in fig. 3 - node T in FIG. 1 (in the fixed position of the movable section of the zishka relatively stationary); FIG. 4 - the same5 in unlocked-: position of the mobile section of the tower, oi-capally fixed and ready to move the mobile section to the transport position,. 5. The cyclic cylinder 69 is hingedly connected to the frame 2 and the tower 1, the latter being installed from a horizontal position into a vertical position and vice versa. The telescopic tower 1 includes successively mounted stationary sections 7 installed in it

: The G-bottom mobile section 8 and the G-captive in the latter are the upper sub-, un section 9 with the fixation unit:) the middle movable section 8 of the relatively fixed base section 7-the fix fix 11 the upper displacement; - oh section 9 relative to the middle i shzhnoy section 8, fixation units: 0 h 11 structurally performed identically,

Each fixing unit 10 or 11 contains a pusher-plate 12 of a triangular shape which is connected by an angle 13 of the ball HHjjuo to a plate 14 rigidly connected to the lower end of the movable section 8 by a hinge of the axis L; The characteristic angle of the plate 12 is the angle 199 formed by the sides 16 and 18, the mobile section 8 provides the support with a support 20 for the latching of the finger 21 at the Tyrom 22 for the plate 12. The finger 7.1 is installed in the hole 23, in the outer fixed section 7 or section 8 and has a face NOSTA 24, side surface 25 and stop flanges 26. The finger 21 on the outer side section 7 is closed Kolpa com 27a incorporating an

spring 28 is compressed with the possibility of back-lifting operations with a lift mechanism. . if „. JU, v

and operation with an emphasis 26 and movement of the finger 21 towards the movable section 8. Between sections 7 and 8, they have. side clearance

Structurally, the corners 13 and J9 of the plate 12 are rounded. When the interaction of the end surface of the elts 21 (see Fig 3) with the side 16 of the plate 12 is maintained, the rac 55

A removable one (not shown) for folding the tower 1 of section 8 and 9 is raised to the upper position. At the same time, the end surfaces 24 of the fingers 21 are scooped on the sides 16 of the plates 12 until the side surfaces 25 of the fingers 21 are below the corners 19 of the plates 12. At the same time the fingers 2 move to the gap and to the side

five

0

d

The position of a between the flange 26 of the finger 21 and the outer side of the fixed section 7. When the side 16 of the plate 12 interacts with the support 20 of the finger 21 between the angle 19 and the fixed section 7, a gap b is maintained (see Fig. 4), which is smaller than the lateral gap k.

Q The tower works as follows. On the vehicle 3, the tower 1 is delivered to the place of performance of the lifting operations, while the hydraulic jacks 4 frame 2 of the transport

5, the means 3 is set to a horizontal position. The hydraulic cylinder 6, the tower 1 is set from horizontal to vertical position. After the tower 1 is installed in the vertical position by a mechanism of extension (not shown in fig.), The movable sections 8 and 9 are extended to the upper position. In this case, the spring-loaded springs 28 of the fingers 21 with their end surfaces 24 slide along trusses with sections 8 and 9 until the supports 20 are located above the side surfaces 25 of the fingers 21. The springs 28, interacting with the stops 26, move the fingers 21 toward the movable sections 8 and 9. These movements take place before the contacts of the end surfaces 24 of the fingers 21 with the sides 16 of the plates 12 and after rotation of the latter with respect to the axes 15 before the sides 17 of the plates 12 come into contact with the stops 22.

In this position, the gap is maintained between the flanges of the 26 fingers.

21 and the outer surfaces of sections 7 and 8.

After that, the movable sections 8 and

9 is allowed to contact the side surfaces 25 of the fingers 21 with the lugs 20. The tower 1 is thus fixed in its extended position and is ready for operation. Cargo winch

4, perform the necessary tripping operations in the well.

After completing the run35

45

v

A removable one (not shown) for folding the tower 1 of section 8 and 9 is raised to the upper position. The end surfaces 24 of the fingers 21 slide along the sides 16 of the plates 12 until the side surfaces 25 of the fingers 21 are below the corners 19 of the plates 12. At the same time, the fingers 21 move to the gap and to the side

The movable sections 8 and 9, up to the contact of the flanges 26 with sections 7 and 8. Thereafter, the plates 12, being above their fingers under their own weight, rotate in the direction of the supports 20.

Further sections 8 and 9 begin to lower. The side surfaces 25 of the fingers 21 are sequentially in contact with the corners 19 and the sides 18 of the plates 12. Then as the sections 8 and 9 are lowered, the sides 18 of the plates 12 contact with the end surfaces 24 of the fingers 21, which act on them. In this case, the fingers 21, compressing the springs 28 located in the caps 27, move in the holes 23, and the plate 12 rotates relative to the axis 15 until the side 16 of the plate 12 contacts the support of the finger 20 21. Next, the faces 21 are in contact with the end surfaces 24 19 until the side surfaces 25 of the fingers 21 are higher than the supports of the fingers 20 21. Next, the fingers 21 with their end surfaces 24, however, over the trusses of sections 8 and 9, do not prevent the lowering of the upper movable section 9 and middle movable section 8 down;

Then the hydraulic cylinder 6, the tower 1 is installed in a horizontal position. However, when the device is operated for a long time with the tower 1 extended and in bad weather conditions (rain with subsequent frosts, snow, etc.) the plates 12 when the sections of the tower 1 are unlocked remain in a position where the stops 22 constantly contact the sides 17 of the plates 12 i.e. the plates 12 may stick to the stops 22. When lowering sections 8 and 9, for uncoupling them, the fingers 21 with their side surfaces 25, interact with the corners 19 of the plates 12, rotate the latter towards the supports 20 of the fingers 21, i.e. regardless of weather conditions, the tower is released 1

Under the same weather conditions (low temperatures, snow, etc.)

after unlocking the tower 1, the plate 12 remains in a position in which their sides 17 are constantly in contact with the pillars 20 of the fingers 21. With the next extension of the sections 8 and 9, not; A look at the position of the plates 12, i.e. their sticking with respect to the supports 20, the tower 1 is fixed, since

as the sections 8 and 9 extend, the fingers 21 interact with the side surfaces 25 with the sides 16 of the plates 12, rotate the latter relative to the axis 15 in the direction of the stops

22. This is because the side gap k between sections 7 and 8 and sections 8 and 9, respectively, is larger than the value of b, which corresponds to the distance from section 7 (or 8)

up to the angles 19 of the plates 12. Thus, the sections of the tower 1 are fixed regardless of the position of the plate 12.

Claims (2)

1. A telescopic tower containing an outer fixed section, an inner movable section with a gap, and a mechanism for them 0 fixing, including a spring-loaded latch installed in the outer section and a pusher for interacting with the latter, characterized in that, in order to improve the performance of the tower by increasing the reliability of the fixation mechanism, the pusher is made in the form of a triangular plate, one of which is pivotally fixed - Q flax on the lower end of the inner section, while the sides of the plate adjacent to this vertex are adapted to interact with the indicated end, and the pusher is set flax with the possibility of periodic placement in the gap between the outer and inner sections. I 2. The tower according to claim 1, wherein the latch is made in the form of a finger. f / 9t S tf I (& Fig.Z 23 FIG. four Compiled by T.Nikitenko Editor E.Polionova Tehred S.Migunova Proofreader T.Malets Order 1456 Circulation 362Subscription VNIIPN State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 eight J3 20 24