Pile casing follow-up rotary drilling rig

Abstract

The utility model relates to the technical field of rotary drilling rigs, and discloses a pile casing follow-up rotary drilling rig which comprises a screw-in machine head connected with a cylinder body, and further comprises a mounting sleeve, one end of the mounting sleeve is inserted into the inner bottom of the cylinder body, and the mounting sleeve is detachably connected with the cylinder body through a first connecting piece; the fixing block is annularly arranged on the outer wall of the mounting sleeve; the screw-in teeth are connected with the fixing block in a clamped mode, and the screw-in teeth are detachably connected with the mounting sleeve through a second connecting piece. The multiple annularly-arranged screw-in teeth are detachably connected to the fixing block, the screw-in efficiency of the pile casing can be improved, the screw-in teeth are installed in a combined mode, single damaged screw-in teeth can be conveniently and independently overhauled and replaced, personnel operation is facilitated, in addition, the installation sleeve and the casing body are detachably connected, and the screw-in efficiency of the pile casing is improved. The installation sleeve with more abrasion contact surfaces can be overhauled and replaced conveniently, the construction and maintenance cost is reduced, personnel overhaul operation is facilitated, and the overhaul efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary drilling rig technical field, concretely is a kind of casing follow-up rotary drilling rig. BACKGROUND

[0002] Casing is used for cast-in-place pile construction operation, is made of steel, cylindrical shape.It is generally steel casing, wall thickness 10mm, generally as construction prevention fixed effect, casing connection requires no protrusions in the cylinder, should resist tension, compression, not leak, in the construction process, casing can play the role of fixed pile position, guide drilling direction, it can also isolate surface water from flowing into wellhole, protect the aperture not collapse.

[0003] Such as Chinese patent announcement No. CN220394575U, its disclosure date is 20240126, it discloses a kind of full follow-up casing, including driver and multiple casing bodies, multiple casing bodies are divided into one end casing and at least one connecting casing, connecting casing is arranged between driver and end casing, driver is used to drive one casing body rotation;Connecting casing and end casing are close to the end of driver and are each provided with first connector, the end of connecting casing away from first connector is provided with the second connector for the insertion of first connector, fixed piece is arranged on the second connector and is moved along the direction perpendicular to the axis of connecting casing, first connector is provided with the connector hole for the insertion of fixed piece.

[0004] The above-mentioned patent has the effect of reducing the difficulty of casing exiting the hole and improving the service life of the casing, but the alloy steel teeth in the above-mentioned patent are of an integral molding structure, which is inconvenient to overhaul and replace.

[0005] Such as Chinese patent announcement No. CN220522473U, its disclosure date is 20240223, it discloses a kind of full casing follow-up rotary drilling rig, including cylinder body and rotary machine head, the lower part of cylinder body is installed with rotary block and deepening ring, the upper part of cylinder body is provided with fixed rod, rotary block is distributed on the surface of deepening ring, the shape of rotary block is inclined and curved, and deepening ring is a half truncated cone ring shape.

[0006] The above-mentioned patent can improve the use effect and excavation efficiency of the device, but the rotary block and deepening ring in the above-mentioned patent are of an integral molding structure, which is inconvenient to overhaul and replace.

[0007] From the above two patents, in order to improve the rotary efficiency of the casing, the existing casing is provided with rotary teeth at the end to improve the rotary efficiency of the casing and reduce the resistance of the casing lowering, so that the casing can be put into the dense stratum faster and easier, but the rotary teeth of the prior art are mostly welded or integrally formed with the casing, and the rotary teeth are the most easily worn parts of the casing. When the rotary teeth are worn, the entire casing needs to be replaced and maintained, which increases the construction and maintenance cost and is time-consuming and laborious. SUMMARY

[0008] (1) Technical problems solved

[0009] In view of the deficiencies in the prior art, the utility model provides a casing follow-up rotary drilling rig to solve the problems of the prior art that rotary teeth are mostly welded or integrally formed with the casing, and the rotary teeth are the most easily worn parts of the casing, and when the rotary teeth are worn, the whole casing needs to be replaced and maintained, thereby increasing the construction and maintenance cost and being time-consuming and laborious.

[0010] (2) Technical solutions

[0011] To achieve the above object, the utility model provides the following technical scheme:

[0012] A casing follow-up rotary drilling rig, comprising a rotary head, the rotary head is connected with a barrel, further comprising a mounting sleeve, one end of the mounting sleeve is inserted into the inner bottom of the barrel and is detachably connected with the barrel through a first connecting piece; a plurality of fixing blocks are arranged and annularly arranged on the outer wall of the mounting sleeve, the bottom of the mounting sleeve abuts against the top of the fixing blocks; and a plurality of rotary teeth are arranged, the number of the rotary teeth is the same as that of the fixing blocks, the rotary teeth are clamped with the fixing blocks, and the rotary teeth are detachably connected with the mounting sleeve through a second connecting piece.

[0013] Preferably, the first connecting piece comprises a first bolt, a plurality of threaded holes are formed in the barrel, the first bolt is threadedly installed in the threaded holes, a plurality of limiting grooves are formed in the mounting sleeve, when one end of the mounting sleeve is inserted into the inner bottom of the barrel, the threaded holes are aligned with the limiting grooves, and one end of the first bolt is inserted into the limiting grooves.

[0014] Preferably, a positioning groove is formed in the barrel, and a positioning block is fixedly installed on the outer wall of the mounting sleeve and is clamped in the positioning groove.

[0015] Preferably, the second connecting piece comprises a second bolt, a slot is formed in the bottom of the fixing block, a hole is formed in one side of the slot, and a threaded groove is formed in the other side of the slot.

[0016] A connecting plate is fixedly connected to the rotary tooth, a connecting hole is formed in the connecting plate, when the connecting plate is clamped and inserted into the slot, the connecting hole is aligned with the hole and the threaded groove respectively, and one end of the second bolt passes through the hole and the connecting hole in sequence and is threadedly connected in the threaded groove.

[0017] Preferably, the rotary cutting diameter of the rotary tooth is equal to the outer diameter of the barrel.

[0018] Preferably, the bottom of the barrel is provided with a support clamping groove, and the top of the fixing block is clamped and connected in the support clamping groove.

[0019] Preferably, a reinforcing rib is fixedly connected between the two adjacent fixing blocks, and the reinforcing rib is welded with the mounting sleeve.

[0020] The fixing block and the mounting sleeve are integrally formed.

[0021] Preferably, the first bolt is hiddenly installed in the threaded hole.

[0022] The second bolt is hiddenly installed in the jack.

[0023] Preferably, the upper inner opening edge of the mounting sleeve is a chamfered edge structure.

[0024] Preferably, the insertion opening of the positioning groove is a rounded edge structure.

[0025] (Three) beneficial effects

[0026] The utility model provides a kind of casing follow-up rotary drilling rig, with the following beneficial effects:

[0027] I, in the utility model, a plurality of annularly arranged rotary teeth are detachably connected to the fixing block, which can improve the casing rotary efficiency, and the rotary teeth are installed in combination, so that the damaged single rotary tooth can be individually repaired and replaced, which is convenient for personnel operation.In addition, the mounting sleeve and the barrel are also connected in a detachable manner, which facilitates the repair and replacement of the mounting sleeve with more wear contact surfaces, reduces the construction and maintenance cost, facilitates personnel repair operation and increases the repair efficiency.

[0028] II, in the utility model, the rotary cutting diameter of the rotary tooth is equal to the outer diameter of the barrel, so that the barrel can be placed following the rotary position of the rotary tooth, increasing the barrel placement efficiency and the smoothness of the barrel placement.

[0029] III, in the utility model, the reinforcing rib is fixedly connected between the two adjacent fixing blocks, which can further increase the stability of the fixing block installation and use, improve the use strength of the fixing block, and share part of the load when the fixing block is subjected to external force, reducing the deformation and damage risk of the fixing block.

[0030] III, in the utility model, the first bolt and the second bolt are hiddenly installed, which avoids the collision and wear of the first bolt and the second bolt with the outside world, improves the stability of the first bolt and the second bolt connection. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the overall three-dimensional schematic diagram of the utility model.

[0032] Figure 2 It is the first view angle schematic view of the cylinder section of the utility model;

[0033] Figure 3 It is the second view angle schematic view of the cylinder section of the utility model;

[0034] Figure 4 It is the explosion schematic view of the utility model;

[0035] Figure 5 It is the positioning groove structure schematic view of the utility model;

[0036] Figure 6 It is the installation sleeve section schematic view of the utility model;

[0037] Figure 7 It is the rotary gear structure schematic view of the utility model.

[0038] In the figure: 1, rotary head; 2, cylinder; 201, threaded hole; 202, positioning groove; 2021, fillet edge; 203, support slot; 3, installation sleeve; 301, limiting groove; 302, first bolt; 4, fixed block; 401, slot; 402, jack; 403, threaded groove; 5, rotary gear; 501, connecting plate; 502, connecting hole; 503, second bolt; 6, positioning block; 7, reinforcing rib. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0040] EMBODIMENT

[0041] As shown in the figure, the embodiment provides a technical solution: Figures 1-7

[0042] A protector following rotary drilling rig, including rotary head 1, rotary head 1 is connected with cylinder 2, still include

[0043] Installation sleeve 3, one end is inserted in the inner bottom of cylinder 2, and is detachably connected with cylinder 2 by first connecting piece;

[0044] Fixed block 4, it is equipped with multiple, and annularly arranged on the outer wall of installation sleeve 3, and the bottom of installation sleeve 3 and the top of fixed block 4 abut;And

[0045] ​The number of the screw-in teeth 5 is the same as that of the fixed blocks 4, the screw-in teeth 5 are clamped with the fixed blocks 4, and the screw-in teeth 5 are detachably connected with the mounting sleeve 3 through the second connecting piece.

[0046] Through the above technical scheme, the mounting sleeve 3 is used for connecting the cylinder body 2, the fixed block 4 is used for connecting the mounting sleeve 3, a plurality of annularly arranged screw-in teeth 5 are detachably connected on the fixed block 4, the screw-in efficiency of the cylinder can be improved, the single damaged screw-in tooth 5 can be individually overhauled and replaced through the combined installation of the screw-in teeth 5, the personnel operation is facilitated, in addition, the mounting sleeve 3 and the cylinder body 2 are also connected in a detachable manner, the mounting sleeve 3 with more wear contact surfaces can be overhauled and replaced, the construction and maintenance cost is reduced, the personnel overhauling operation is facilitated, and the overhauling efficiency is improved.

[0047] As shown in Figures 2-6 , in order to facilitate the disassembly and assembly between the mounting sleeve 3 and the cylinder body 2, facilitate the overhauling and replacement of the mounting sleeve 3, further, the first connecting piece includes a first bolt 302, a plurality of threaded holes 201 are formed on the cylinder body 2, the first bolt 302 is threadedly installed in the inside of the threaded hole 201, a plurality of limiting grooves 301 are formed on the mounting sleeve 3, when one end of the mounting sleeve 3 is inserted into the inner bottom of the cylinder body 2, the threaded hole 201 is aligned with the limiting groove 301, and one end of the first bolt 302 is inserted into the inside of the limiting groove 301.

[0048] As shown in Figures 3-5 , in order to facilitate the quick butt joint between the mounting sleeve 3 and the cylinder body 2, complete the quick alignment of the threaded hole 201 and the limiting groove 301, further, a positioning groove 202 is formed on the cylinder body 2, a positioning block 6 is fixedly installed on the outer wall of the mounting sleeve 3, and the positioning block 6 is clamped and inserted into the inside of the positioning groove 202.

[0049] As shown in Figure 2 , 4 , 6, 7, in order to facilitate the disassembly and assembly of the screw-in tooth 5, facilitate the overhauling and replacement of the screw-in tooth 5, further, the second connecting piece includes a second bolt 503, a slot 401 is formed on the bottom of the fixed block 4, a hole 402 is formed on one side of the inside of the slot 401, and a threaded groove 403 is formed on the other side.

[0050] A connecting plate 501 is fixedly connected on the screw-in tooth 5, a connecting hole 502 is formed on the connecting plate 501, when the connecting plate 501 is clamped and inserted into the inside of the slot 401, the connecting hole 502 is respectively aligned with the hole 402 and the threaded groove 403, and one end of the second bolt 503 passes through the hole 402 and the connecting hole 502 in sequence and is threadedly connected in the inside of the threaded groove 403.

[0051] In order to enable the barrel 2 to follow the spiral tooth 5 to rotate down and to improve the efficiency of the barrel 2, further, the spiral cutting diameter of the spiral tooth 5 is equal to the outer diameter of the barrel 2.

[0052] As shown in Figure 5 , in order to further improve the stability of the fixed block 4, further, the bottom of the barrel 2 is provided with a support clamping groove 203, and the top of the fixed block 4 is clamped and connected in the inside of the support clamping groove 203.

[0053] In order to further improve the stability of the fixed block 4, improve the use strength of the fixed block 4, when the fixed block 4 is subjected to external force, a part of the load can be shared, the deformation and damage risk of the fixed block 4 is reduced, further, the adjacent two fixed blocks 4 are fixedly connected with the reinforcing rib 7, and the reinforcing rib 7 is welded and fixed with the mounting sleeve 3.

[0054] The fixed block 4 and the mounting sleeve 3 are integrally formed.

[0055] In order to increase the stability of the first bolt 302 and the second bolt 503, avoid the first bolt 302 and the second bolt 503 from being worn by collision with the outside, further, the first bolt 302 is hiddenly installed in the inside of the threaded hole 201.

[0056] The second bolt 503 is hiddenly installed in the inside of the insertion hole 402.

[0057] The first bolt 302 and the second bolt 503 are all internal hexagonal bolts, which are convenient to install.

[0058] As shown in Figure 2 , 6 , in order to facilitate the mud to fall without being accumulated at the upper inner edge of the mounting sleeve 3, further, the upper inner edge of the mounting sleeve 3 is chamfered.

[0059] As shown in Figure 5 , in order to increase the smoothness of the positioning block 6 inserted into the inside of the positioning groove 202, further, the insertion opening of the positioning groove 202 is provided with a round corner 2021 structure.

[0060] The barrel 2, the mounting sleeve 3, the fixed block 4 and the spiral tooth 5 are all made of high-strength alloy steel or high-quality steel, both of which have the advantages of wear resistance, tensile resistance and corrosion resistance, can meet the needs of various geological conditions and can be recycled, and can ensure that they are not deformed during the sinking process.

[0061] It is worth mentioning that the quality and loss of the spiral tooth 5 should be checked frequently, if the spiral tooth 5 is worn too much or lost, a new spiral tooth 5 should be replaced in time to ensure the smooth construction;

[0062] When the barrel 2 is connected with the mounting sleeve 3, the first bolt 302 must be fully tightened, and when the rotating tooth 5 is connected with the fixed block 4, the second bolt 503 must be fully tightened;

[0063] The first bolt 302, the second bolt 503 and the threaded hole 201 and the threaded groove 403 on the barrel 2 need to be regularly maintained and oiled;

[0064] The barrel 2 and the rotating tooth 5 should be cleaned and repaired in time after each use to improve the turnover frequency and increase economic benefits.

[0065] In conclusion, the working process of the utility model is as follows: when the rotating tooth 5 needs to be overhauled and disassembled, first, the second bolt 503 is disassembled by using a hexagonal wrench, then the connecting plate 501 on the rotating tooth 5 is pulled out from the inside of the insertion slot 401, and the disassembly of the rotating tooth 5 is completed;

[0066] When the mounting sleeve 3 needs to be overhauled and disassembled, first, the rotating teeth 5 are disassembled from the fixed block 4, then the first bolt 302 is disassembled by using a hexagonal wrench, and then the mounting sleeve 3 is slowly pulled out from the inner bottom of the barrel 2, and the disassembly of the mounting sleeve 3 is completed.

[0067] It should be noted that in this text, relational terms such as first and second and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between or among the entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0068] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A casing following rotary drilling rig, comprising a rotary head (1), the rotary head (1) is connected with a casing (2), characterized in that: Also includes The mounting sleeve (3) is inserted at one end in the inner bottom of the barrel (2), and is detachably connected with the barrel (2) through a first connecting piece; The fixed block (4) is provided with a plurality of annularly arranged on the outer wall of the mounting sleeve (3), and the bottom of the mounting sleeve (3) abuts against the top of the fixed block (4); and The number of the screw-in teeth (5) is the same as that of the fixed block (4), the screw-in teeth (5) are clamped with the fixed block (4), and the screw-in teeth (5) are detachably connected with the mounting sleeve (3) through a second connecting piece.

2. The casing following rotary drilling rig according to claim 1, characterized in that: The first connecting piece includes a first bolt (302), a plurality of threaded holes (201) are formed on the barrel (2), the first bolt (302) is threadedly installed in the interior of the threaded hole (201), a plurality of limiting grooves (301) are formed on the mounting sleeve (3), when the mounting sleeve (3) is inserted at one end in the inner bottom of the barrel (2), the threaded hole (201) is aligned with the limiting groove (301), and one end of the first bolt (302) is inserted into the interior of the limiting groove (301).

3. The casing following rotary drilling rig according to claim 2, characterized in that: The barrel (2) is provided with a positioning groove (202), and the outer wall of the mounting sleeve (3) is fixedly provided with a positioning block (6), which is clamped and connected in the interior of the positioning groove (202).

4. The casing following rotary drilling rig according to claim 3, characterized in that: The second connecting piece includes a second bolt (503), the bottom of the fixed block (4) is provided with a slot (401), one side of the interior of the slot (401) is provided with a insertion hole (402), and the other side is provided with a threaded groove (403); The connecting plate (501) is fixedly connected on the screw-in teeth (5), the connecting hole (502) is formed on the connecting plate (501), when the connecting plate (501) is clamped and inserted into the interior of the slot (401), the connecting hole (502) is respectively aligned with the insertion hole (402) and the threaded groove (403), and one end of the second bolt (503) passes through the insertion hole (402) and the connecting hole (502) in sequence and is threadedly connected in the interior of the threaded groove (403).

5. The casing following rotary drilling rig according to claim 4, characterized in that: The rotary cutting diameter of the screw-in teeth (5) is equal to the outer diameter of the barrel (2).

6. The casing follower rotary drilling rig of claim 1, wherein: The bottom of the barrel (2) is provided with a supporting clamping groove (203), and the top of the fixed block (4) is clamped and connected in the interior of the supporting clamping groove (203).

7. The casing following rotary drilling rig of claim 1, wherein: The reinforcing ribs (7) are fixedly connected between the adjacent two fixed blocks (4), and the reinforcing ribs (7) are welded with the mounting sleeve (3); The fixed block (4) and the mounting sleeve (3) are integrally formed.

8. The casing follower rotary drilling rig of claim 4, wherein: The first bolt (302) is hiddenly installed in the interior of the threaded hole (201); The second bolt (503) is hiddenly installed in the interior of the insertion hole (402).

9. The casing follower rotary drilling rig of claim 1, wherein: The upper inner edge of the mounting sleeve (3) is chamfered.

10. The casing follower rotary drilling rig of claim 3, wherein: The insertion hole of the positioning groove (202) is rounded (2021).

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