Pile casing positioner of rotary drilling rig

Abstract

The utility model discloses a casing positioner for a rotary drilling rig, which belongs to the technical field of rotary drilling rigs and comprises a first rod body, a second rod body and a third rod body. Wherein the first rod body, the second rod body and the third rod body are encircled to form an equilateral triangle when being unfolded, the first rod body, the second rod body and the third rod body are simultaneously tangent to the pile casing, the pile casing is limited, and the side length of the equilateral triangle is correspondingly adjusted along with the diameter of the pile casing of the corresponding rotary drilling rig; the first rod body, the second rod body and the third rod body are mutually matched to position the protective cylinder, the structure is simple, operation is convenient, the protective cylinder can be folded when not used, the size is reduced, and carrying and storage are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling machines, in particular to a casing positioner for a rotary drilling rig. Background Art

[0002] In the prior art, most of the casing positioners for rotary drilling rigs are provided with hydraulic cylinders around the positioners, and the casing is fixed by the pressure of the hydraulic cylinders. In order to solve the problems of high production cost, poor fixing effect and easy loosening of the positioners, the Chinese patent document with publication number CN221742503U discloses a casing positioner for rotary drilling rigs, which limits the casing by combining multiple sleeves and telescopic rods. However, the casing positioner has a complex structure, cumbersome operation, and a large size, which is not conducive to transportation and storage. In order to solve the above problems, the present utility model provides a casing positioner for rotary drilling rigs. Utility Model Content

[0003] In response to the above-mentioned technical deficiencies, the purpose of the present utility model is to provide a casing positioner for a rotary drilling rig. The first rod body, the second rod body and the third rod body cooperate with each other to position the casing. The structure is streamlined and easy to operate. When not in use, it can be folded up to reduce the volume and facilitate transportation and storage.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a casing positioner for a rotary drilling rig, comprising:

[0005] a first rod, a second rod, and a third rod;

[0006] The first rod, the second rod and the third rod form an equilateral triangle when unfolded, and the first rod, the second rod and the third rod are tangent to the casing at the same time, thereby limiting the casing, and the side length of the equilateral triangle is adjusted accordingly with the casing diameter of the corresponding rotary drilling rig;

[0007] The first rod body, the second rod body and the third rod body overlap with each other when folded.

[0008] Preferably, the first rod, the second rod and the third rod are of equal length;

[0009] One end of the first rod and the second rod are hinged to each other via a fixed axis, and a limiting portion is provided between the first rod and the second rod for limiting the angle between the first rod and the second rod. A first sliding axis is slidably mounted on the first rod, and a second sliding axis is slidably mounted on the second rod.

[0010] The third rod is connected to the second sliding shaft through a sliding hinge, and the third rod is connected to the sliding hinge with a connecting component;

[0011] Among them, the connecting component is adapted to the first sliding shaft and the fixed shaft. When the first rod body, the second rod body and the third rod body are unfolded, the connecting component is connected to the first sliding shaft. When the first rod body, the second rod body and the third rod body are folded, the connecting component is connected to the fixed shaft.

[0012] Preferably, the limiting portion includes:

[0013] A limiting groove, the limiting groove is provided on the first rod body, and the limiting groove includes two positioning ends, and the two positioning ends are connected to each other through a connecting groove, and the diameter of the positioning end is larger than the width of the connecting groove;

[0014] The limiting rod is fixedly connected to the second rod body and is adapted to the positioning end. The limiting rod is formed by combining a plurality of elastic arc plates, and gaps are left between adjacent elastic arc plates.

[0015] Preferably, a through slot is provided on the third rod body, and the connecting assembly and the second sliding shaft are connected to the through slot.

[0016] Preferably, the connection assembly comprises:

[0017] A shaft body, the shaft body being mounted on the third rod body;

[0018] A bolt is threadedly connected to the inside of a through hole provided on the shaft body, and a thread groove adapted to the bolt is provided on both the first sliding shaft and the fixed shaft, and the thread groove on the first sliding shaft passes through the first sliding shaft.

[0019] Preferably, a plurality of fixing plates are fixedly connected to the lower side surface of the first rod body, and the fixing plates are provided with through openings.

[0020] The beneficial effects of the present invention are:

[0021] The utility model realizes that the first rod body, the second rod body and the third rod body are arranged so that when in use, the first rod body, the second rod body and the third rod body are unfolded to form an equilateral triangle, the protective tube is inserted into the interior of the equilateral triangle and is tangent to the first rod body, the second rod body and the third rod body at the same time, so that the protective tube can be positioned, the structure is streamlined, and the operation is convenient. When not in use, the first rod body, the second rod body and the third rod body can be folded up. At this time, the first rod body, the second rod body and the third rod body overlap with each other to form a straight rod, which reduces the volume and is convenient for transportation and storage.

[0022] The utility model provides a limiting portion between the first rod body and the second rod body, so that the angle between the first rod body and the second rod body will not change arbitrarily when the first rod body and the second rod body are folded or unfolded, thereby facilitating operation by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 The present invention provides a structural schematic diagram of a casing positioner for a rotary drilling rig.

[0025] Figure 2 This is a schematic diagram of the adjustment state of the utility model.

[0026] Figure 3 This is an exploded view of the present invention.

[0027] Figure 4 This is a schematic diagram of the folded state of the utility model.

[0028] Figure 5 This is a schematic diagram of the connection between the bolt and the fixed shaft of the utility model.

[0029] Figure 6 This is a schematic diagram of the connection between the bolt and the first sliding shaft of the utility model.

[0030] Figure 7 This is a schematic structural diagram of the limit groove of the utility model.

[0031] Figure 8 This is a schematic diagram of the connection between the limiting rod and the second rod body of the utility model.

[0032] Description of reference numerals:

[0033] 1. First rod body, 2. Second rod body, 3. Third rod body, 4. Fixed shaft, 5. First sliding shaft, 6. Second sliding shaft, 7. Limiting groove, 8. Limiting rod, 9. Through groove, 10. Shaft body, 11. Bolt, 12. Fixed plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The utility model provides a casing positioner for a rotary drilling rig, such as Figures 1 to 8 shown.

[0036] Example 1:

[0037] The first rod body 1 is a hollow tube, and the second rod body 2 is a hollow tube, and the second rod body 2 is a hollow tube. The first rod body 1 is a hollow tube, and the second rod body 2 is a hollow tube. The second rod body 2 is a hollow tube, and the second rod body 3 is a hollow tube. The first rod body 1 is a hollow tube, and the second rod body 2 is a hollow tube. The third rod body 3 is a hollow tube, and the second rod body 2 is a hollow tube.

[0038] When not in use, the first rod body 1, the second rod body 2 and the third rod body 3 can be folded up to form a straight rod, so that it is convenient for workers to carry and store it.

[0039] Example 2:

[0040] On the basis of the first embodiment, in order to improve the applicability of the present invention, the first rod body 1, the second rod body 2 and the third rod body 3 can be connected in the following manner, so that the side length of the equilateral triangle formed by the first rod body 1, the second rod body 2 and the third rod body 3 can be adjusted, thereby being used to position casings of different diameters. Specifically, as follows:

[0041] One end of the first rod body 1 and the second rod body 2 are hinged to each other through a fixed shaft 4, the fixed shaft 4 is fixedly connected to the first rod body 1, the second rod body 2 and the fixed shaft 4 are hinged to each other, a first sliding shaft 5 is slidably installed on the first rod body 1, and the upper end surface of the first sliding shaft 5 is flush with the upper side surface of the first rod body 1, so that the first rod body 1 and the second rod body 2 can be rotated to an overlapping state, and a second sliding shaft 6 is slidably installed on the second rod body 2.

[0042] A slide rail is provided on the first rod body 1. The size of the interior of the slide rail is larger than the size of the slide rail opening. One end of the first sliding shaft 5 extends to the interior of the slide rail and folds outward to form a convex circle. The size of the convex circle is adapted to the size of the interior of the slide rail. The size of the first sliding shaft 5 is adapted to the size of the slide rail opening, so that the first sliding shaft 5 can slide on the first rod body 1, but will not detach from the first rod body 1. The connection method between the second sliding shaft 6 and the second rod body 2 is exactly the same as the connection method between the first sliding shaft 5 and the first rod body 1.

[0043] The third rod body 3 is connected to the second sliding shaft 6 by a sliding hinge (that is, the third rod body 3 and the second sliding shaft 6 can rotate relative to each other and can also slide relative to each other). The third rod body 3 is also connected to a connecting component by a sliding hinge, and the connecting component is adapted to the first sliding shaft 5 and the fixed shaft 4.

[0044] When the first rod 1 , the second rod 2 and the third rod 3 are unfolded, the connecting assembly is connected to the first sliding shaft 5 , and the first rod 1 , the second rod 2 and the third rod 3 can form an equilateral triangle.

[0045] When the first rod 1 , the second rod 2 and the third rod 3 are folded, the connecting assembly is connected to the fixed shaft 4 , and the first rod 1 , the second rod 2 and the third rod 3 can stably maintain the folded state.

[0046] A through slot 9 is provided on the third rod body 3, and the second sliding shaft 6 passes through the through slot 9 and extends to the outside of the third rod body 3 and folds outward to form a convex circle, so that the second sliding shaft 6 and the third rod body 3 can be connected by a sliding hinge, and the third rod body 3 and the second sliding shaft 6 will not be separated.

[0047] The connecting assembly includes a shaft body 10, one end of the shaft body 10 is inserted into the through groove 9, and the other end is folded outward to form a convex circle. The shaft body 10 is threadedly connected to a bolt 11 through a through hole provided thereon. The first sliding shaft 5 and the fixed shaft 4 are both provided with threaded grooves compatible with the bolt 11, and the threaded groove on the first sliding shaft 5 passes through the first sliding shaft 5.

[0048] When unfolding, turning the bolt 11 clockwise can make it threadedly connected to the shaft body 10 and the first sliding shaft 5 at the same time, thereby connecting the shaft body 10 and the first sliding shaft 5 together, so that the first rod body 1, the second rod body 2 and the third rod body 3 form an equilateral triangle. At this time, pushing the third rod body 3 in the direction of the fixed axis 4 can adjust the side length of the equilateral triangle. When it is adjusted to the specified size, turning the bolt 11 clockwise can make the bolt 11 press against the first rod body 1, so that the side length of the equilateral triangle formed by the first rod body 1, the second rod body 2 and the third rod body 3 can be kept fixed, and the casing can be stably positioned.

[0049] When folding, turning the bolt 11 clockwise can make it threadedly connected to the shaft body 10 and the fixed shaft 4 at the same time, so that the third rod body 3 and the second rod body 2 are stably overlapped together to maintain the folded state, and then the first rod body 1 and the second rod body 2 are overlapped with each other to make the first rod body 1, the second rod body 2 and the third rod body 3 into the folded state.

[0050] Example 3:

[0051] On the basis of the second embodiment, in order to more stably maintain the equilateral triangle formed by the first rod body 1, the second rod body 2 and the third rod body 3 in the unfolded state or the folded state and facilitate adjustment by the staff, a limiting portion is provided between the first rod body 1 and the second rod body 2. The limiting portion is used to limit the angle between the first rod body 1 and the second rod body 2 so that the first rod body 1 and the second rod body 2 are stably in the overlapping state, or the angle between the first rod body 1 and the second rod body 2 is stably maintained at 60 degrees. The limiting portion includes: a limiting groove 7 and a limiting rod 8;

[0052] The limiting groove 7 is provided on the first rod body 1, and the limiting groove 7 includes two positioning ends, the two positioning ends are connected to each other through a connecting groove, and the diameter of the positioning end is larger than the width of the connecting groove;

[0053] The limiting rod 8 is fixedly connected to the second rod body 2, and the diameter of the limiting rod 8 is adapted to the positioning end. When the first rod body 1 and the second rod body 2 overlap with each other, the limiting rod 8 is located inside one of the positioning ends. When the first rod body 1 and the second rod body 2 are unfolded, the limiting rod 8 is located inside the other positioning end. At this time, the angle between the first rod body 1 and the second rod body 2 is 60 degrees. The limiting rod 8 can move from the inside of one positioning end to the inside of the other positioning end along the connecting groove as the second rod body 2 rotates.

[0054] The limiting rod 8 is formed by a combination of multiple elastic arc plates, and gaps are left between adjacent elastic arc plates. Only when the staff forcefully rotates the second rod body 2, can the multiple elastic arc plates overcome the resistance of the connecting groove, be compressed to produce elastic deformation and move to the inside of the connecting groove, thereby enabling relative rotation between the first rod body 1 and the second rod body 2. In the absence of external force, the elastic arc plates will not move arbitrarily to the inside of the connecting groove under the action of their own elastic force, thereby keeping the angle between the first rod body 1 and the second rod body 2 fixed, and then the first rod body 1 and the second rod body 2 can be stably in an overlapping state, or the angle between the first rod body 1 and the second rod body 2 can be stably maintained at 60 degrees.

[0055] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A casing positioner for a rotary drilling rig, characterized in that: include: A first rod body (1), a second rod body (2) and a third rod body (3); The first rod body (1), the second rod body (2) and the third rod body (3) are combined to form an equilateral triangle when unfolded, and the first rod body (1), the second rod body (2) and the third rod body (3) are simultaneously tangent to the casing, thereby limiting the casing, and the side length of the equilateral triangle is adjusted accordingly with the casing diameter of the corresponding rotary drilling rig; The first rod body (1), the second rod body (2) and the third rod body (3) overlap with each other when folded.

2. A casing positioner for a rotary drilling rig according to claim 1, characterized in that: The first rod (1), the second rod (2) and the third rod (3) are of equal length; One end of the first rod body (1) and the second rod body (2) are hinged to each other via a fixed shaft (4), and a limiting portion is provided between the first rod body (1) and the second rod body (2) for limiting the angle between the first rod body (1) and the second rod body (2), a first sliding shaft (5) is slidably mounted on the first rod body (1), and a second sliding shaft (6) is slidably mounted on the second rod body (2); The third rod body (3) is connected to the second sliding shaft (6) via a sliding hinge, and a connecting component is connected to the sliding hinge on the third rod body (3); The connecting assembly is adapted to the first sliding shaft (5) and the fixed shaft (4); when the first rod body (1), the second rod body (2), and the third rod body (3) are unfolded, the connecting assembly is connected to the first sliding shaft (5); and when the first rod body (1), the second rod body (2), and the third rod body (3) are folded, the connecting assembly is connected to the fixed shaft (4).

3. A casing positioner for a rotary drilling rig according to claim 2, characterized in that: The limiting portion includes: A limiting groove (7), the limiting groove (7) being provided on the first rod body (1), and the limiting groove (7) comprising two positioning ends, the two positioning ends being connected to each other via a connecting groove, and the diameter of the positioning end being greater than the width of the connecting groove; A limiting rod (8) is fixedly connected to the second rod body (2) and is adapted to the positioning end. The limiting rod (8) is formed by combining a plurality of elastic arc plates, with gaps being left between adjacent elastic arc plates.

4. The casing positioner for a rotary drilling rig according to claim 2, characterized in that: A through slot (9) is provided on the third rod body (3), and the connecting assembly and the second sliding shaft (6) are connected to the through slot (9).

5. The casing positioner for a rotary drilling rig according to claim 2, characterized in that: Connectivity components include: A shaft body (10), the shaft body (10) being mounted on the third rod body (3); A bolt (11) is threadedly connected to the inside of a through hole provided on the shaft body (10); the first sliding shaft (5) and the fixed shaft (4) are both provided with thread grooves adapted to the bolt (11), and the thread groove on the first sliding shaft (5) passes through the first sliding shaft (5).

6. The casing positioner for a rotary drilling rig according to claim 1, characterized in that: A plurality of fixing plates (12) are fixedly connected to the lower side surface of the first rod body (1), and the fixing plates (12) are provided with through openings.

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