Geological drilling sleeve hoisting and positioning device

Abstract

The invention relates to the technical field of geological drilling equipment, in particular to a geological drilling casing hoisting and positioning device which comprises a supporting frame body, a lifting hoisting frame and a drilling pipe mounting seat main body structure. The supporting frame body guides a lifting frame framework of the lifting frame through an inserting through groove, vertical lifting of the supporting frame body is achieved by driving a gear rack through a rear driver on a built-in base plate, and an I-shaped lifting sliding strip is matched with an outer clamping block to enhance deflection resistance rigidity; a sliding plate is arranged in a pipe penetrating notch of a drilling pipe mounting seat, an abutting cushion block responds to deflection of a sleeve and pushes the sliding plate to move, a linkage pneumatic piston rod compresses and detects gas in a machine barrel, an air pressure sensing piece detects an air pressure change value in real time and feeds back the air pressure change value to a control system, and the inclination angle of a limiting pipe ring is adjusted through a jacking rod so as to forcibly rectify the posture of the sleeve. By means of a closed-loop control mechanism of pneumatic inclination sensing and double-cylinder active limiting, microsecond-level dynamic deviation correction in the casing drilling process is achieved, and the positioning precision is comprehensively improved in combination with a rigid-flexible coupling guide structure.

Description

Technical Field

[0001] This invention relates to the field of geological drilling equipment technology, specifically a geological drilling casing hoisting and positioning device. Background Technology

[0002] As a core technology for resource exploration, engineering geological surveys, and disaster prevention, the efficiency and safety of geological drilling are directly dependent on the reliability of the casing lowering process. In traditional drilling processes, casing lowering is separated from drilling operations, requiring independent equipment for casing positioning and fixation.

[0003] In geological drilling, especially in complex conditions such as deep holes, hard rock, or soft foundations, the precise hoisting and verticality control of the casing directly affect the accuracy of the drilling trajectory and construction safety. During the rotary drilling process, the casing is affected by factors such as uneven rock formations and drill bit vibration, resulting in continuous sway. Existing mechanical limiters are mostly fixed constraints and cannot adjust the support posture in real time, causing the casing to scrape against the borehole wall and accelerate casing wear. Summary of the Invention

[0004] The purpose of this invention is to provide a geological drilling casing hoisting and positioning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A geological drilling casing hoisting and positioning device includes a positioning adjustment assembly, a hoisting adjustment frame mounted on the positioning adjustment assembly and slidable thereal, a drilling casing mounting base disposed at the bottom of the hoisting adjustment frame, and a drilling casing mounted on the drilling casing mounting base; characterized in that: A frame-type lifting frame is vertically inserted inside the lifting adjustment frame. The lifting frame is driven to rise and fall by a lifting adjuster located on the side edge of the lifting adjustment frame. A lifting rail is installed at the bottom of the lifting frame, and the drilling pipe mounting seat is suspended on the lifting rail. The drilling casing mounting base includes a mounting base plate and a through-hole slot thereon; the drilling casing passes through the through-hole slot; a casing limiting cylinder assembly is provided at the through-hole slot, and the top of the drilling casing body is limited within the casing limiting cylinder assembly; a casing tilt sensing assembly is provided on the side edge of the mounting base plate, and the assembly is supported on the side wall of the drilling casing to sense its tilt in real time.

[0006] As a further aspect of the present invention: the positioning adjustment component includes: The longitudinally extending adjustment base plate has an adjustment track along its rear edge; Support columns that support the adjustment base plate; The adjustment module mounted on the adjustment base plate has a central through section with a fixed rack and a parallel support rail. The sliding support block of the hoisting adjustment frame engages with the adjustment track, and its support frame drives the internal drive gear to mesh with the fixed rack through the drive mechanism inside the raised frame.

[0007] As a further embodiment of the present invention: the support frame and the support rail are fitted with a dovetail groove slider pair, and the internal drive gear achieves floating meshing transmission through the transmission cylinder and the inner support plate.

[0008] As a further aspect of the present invention: the lifting adjuster includes: An internal base plate fixed within the support frame; The lifting slide bar located at the rear of the hanging frame structure forms a sliding pair with the outer locking block; The rear-mounted driver, which is installed via a rear-mounted fixed plate, has a drive gear at its output end that meshes with a lifting rack to drive the lifting frame.

[0009] As a further aspect of the present invention: the top of the suspended frame is provided with a top support block, which is connected to the lifting drag chain through a drag chain link block; the top of the lifting drag chain is fixed to the drag chain frame plate of the supporting frame, forming a displacement compensation system.

[0010] As a further aspect of the present invention: the sleeve limiting sleeve assembly includes: A limiting cylinder base with a tapered limiting tube ring; The adjusting cylinders are symmetrically arranged on both sides of the through-tube slot, and their lifting rods are supported by the limiting cylinder base through a ball joint structure.

[0011] As a further aspect of the present invention: the sleeve tilt sensing component includes: An inner track located inside the mounting base plate; A sliding plate is slidably installed on the inner plate track, and a polyurethane abutment pad is provided on its top; The pneumatic piston rod, which is fixedly connected to the sliding plate, has its telescopic end sealed and installed inside the testing chamber. A pressure sensor connected to the testing barrel is used to calculate the sleeve tilt angle by measuring the change in pressure.

[0012] As a further aspect of the present invention: the through-hole has a convex-shaped structure and is provided with an extension groove for limiting the upper part of the sliding plate.

[0013] As a further embodiment of the present invention: the mounting base plate is provided with an array of support blocks around its perimeter, which are connected to external support legs through magnetorheological dampers.

[0014] Compared with the prior art, the beneficial effects of the present invention are: I. Through the combined linkage of horizontal slide rails and vertical lifting mechanisms, along with precision gear and rack transmission, rigid guide rails, and multiple self-locking structures, high-precision positioning of the casing in three-dimensional space is achieved. In the vertical direction, relying on gear and rack drive and anti-bending slide rail guidance, combined with drag chain telescopic protection and modular bushing design, the drilling casing is ensured to remain free from deviation under heavy load conditions.

[0015] II. A dynamic closed-loop verticality control system is designed. The real-time sway of the casing is converted into the displacement of the sliding plate, which drives a pneumatic piston to compress the sealed air chamber. The tilt angle and direction are accurately sensed through changes in air pressure. Simultaneously, two cylinders dynamically adjust the tilt angle of the limit cylinder, forming a "detection-feedback-correction" closed loop to achieve adaptive correction during the drilling process. Compared with traditional contact sensors, this solution has strong resistance to mud contamination and a significantly improved response speed.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Furthermore, these drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the geological drilling casing hoisting and positioning device provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the drilling pipe mounting base provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the sleeve tilt sensing component provided in an embodiment of the present invention.

[0021] Figure 4 This is a structural schematic diagram of the positioning adjustment component and the hoisting adjustment frame provided in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the internal structure of the support frame provided in an embodiment of the present invention.

[0023] Figure 6 This is a structural schematic diagram of the lifting frame provided in an embodiment of the present invention.

[0024] Figure 7 For the present invention Figure 6 Enlarged view of the structure of region A in the middle.

[0025] In the diagram: 1. Positioning and adjusting assembly; 11. Adjusting base plate; 12. Support column; 13. Adjusting track; 14. Adjusting module; 15. Central through section; 16. Support track; 17. Fixed rack; 2. Lifting and adjusting frame; 21. Support frame; 22. Sliding support block; 23. Protruding frame; 24. Drive mechanism; 25. Transmission cylinder; 26. Inner support plate; 27. Internal drive gear; 28. Insertion slot; 3. Lifting frame; 31. Lifting frame structure; 32. Lifting bottom connecting seat; 33. Top support block; 34. Cable chain connecting block; 35. Cable chain frame plate; 36. Lifting cable chain; 37. Lifting slide bar; 4. Drill pipe mounting seat; 41. Mounting seat plate surface; 42 1. Pipe slot; 43. Lifting connector; 44. Extension slot; 47. Support block; 5. Drilling casing; 6. Lifting adjuster; 61. Built-in base plate; 62. External clamping block; 63. Rear fixing plate; 64. Rear driver; 65. Drive gear; 66. Lifting rack; 7. Lifting rail; 8. Casing limiting cylinder assembly; 81. Limiting cylinder base; 82. Limiting tube ring; 83. Pipe sleeve; 84. Adjusting cylinder; 85. Lifting rod; 9. Casing tilt sensing assembly; 91. Support frame; 92. Detection cylinder; 93. Pneumatic piston rod; 94. Sliding plate; 95. Contact pad; 96. Internal support plate; 97. Inner plate track; 98. Air pressure sensor. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, examples of which are illustrated in the drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or identical elements.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] Example 1, please refer to the figure. This invention relates to the field of geological drilling equipment technology, specifically providing a geological drilling casing hoisting and positioning device for achieving high-precision positioning and verticality control of the drilling casing.

[0030] The device includes a positioning and adjusting assembly 1, a hoisting and adjusting frame 2, a drill pipe mounting base 4, and a drill casing 5. The positioning and adjusting assembly 1 is a horizontally moving mechanism, typically composed of a slide rail, rack and pinion, or hydraulic drive system, with its main frame fixed to the drilling platform or mobile base. The hoisting and adjusting frame 2 is installed on the sliding part of the positioning and adjusting assembly 1 and can slide horizontally along the length of the positioning and adjusting assembly 1 via a drive mechanism to achieve initial positioning of the drill casing 5 in the horizontal plane. The hoisting and adjusting frame 2 adopts a frame-box structure, forming a rectangular frame opening inside, within which a vertically inserted lifting frame 3 is installed.

[0031] The lifting adjuster 6 is installed on the side edge of the hoisting adjustment frame 2, and its output end is connected to the lifting frame 3, driving it to rise and fall vertically. The bottom of the lifting frame 3 is fixedly installed with the hoisting rail 7, which is a rigid beam structure with a suspension interface on its lower surface. The drill pipe mounting base 4 is detachably suspended through the locking mechanism on the hoisting rail 7.

[0032] The drill pipe mounting base 4 includes a mounting base plate 41 and a pipe-through slot 42 opened in the center of the plate. The inner diameter of the pipe-through slot 42 is slightly larger than the outer diameter of the drill casing 5, allowing the casing to pass through. The casing limiting sleeve assembly 8 is fixed at the top slot of the pipe-through slot 42, used to correct the center position when the drill casing 5 is inserted, and to constrain the radial displacement of its top tube body. The casing tilt sensing assembly 9 is installed on the side edge of the mounting base plate 41, with the probe end supported on the outer wall of the drill casing 5, to detect the tilt angle and direction of the tube body relative to the vertical line in real time. The tube body of the drill casing 5 is inserted into the pipe-through slot 42 from bottom to top, and its top tube section is embedded in the casing limiting sleeve assembly 8 and radially constrained, while the tube body is continuously monitored by the casing tilt sensing assembly 9.

[0033] This embodiment enables multi-degree-of-freedom coordinated adjustment. The positioning adjustment component 1 controls the horizontal XY-axis displacement, while the lifting frame 3 achieves the vertical Z-axis displacement. The real-time signal from the casing tilt sensing component 9 is fed back to the control system, driving the actuator to form a closed-loop adjustment, actively suppressing casing tilt caused by factors such as uneven ground and load eccentricity. The casing limiting cylinder component 8 reduces the instantaneous impact and shaking during casing insertion through elastic constraints and conical guidance. The rigid connection between the lifting rail 7 and the drill pipe mounting base 4 ensures a stable force transmission path, avoiding swaying caused by flexible suspension.

[0034] Its positioning accuracy is significantly improved. The mechanical rigid structure of the horizontal slide rail and the lifting mechanism is combined with closed-loop tilt feedback. The guide design of the frame-box type hoisting frame and the lifting frame eliminates the swaying and collision of the casing during hoisting. The horizontal deviation between the casing centerline and the drilling axis is ≤1.5mm, and the angular deviation is ≤0.3°.

[0035] As shown in Embodiment 2, based on the basic structure of Embodiment 1, the positioning adjustment component 1 and the hoisting adjustment frame 2 are further refined: The positioning adjustment assembly 1 includes a rectangular plate-shaped adjustment base plate 11, whose four bottom corners are fixed to the drilling platform by height-adjustable support columns 12. Two adjustment rails 13 are arranged parallel to each other along the rear edge of the adjustment base plate 11 (away from the borehole side), with the rails having a V-shaped guide groove structure in cross-section. An adjustment module 14 is mounted on the front middle part of the adjustment base plate 11. This module is an inverted U-shaped frame, with a rectangular through-section 15 in the center of its front plate. The through-section 15 is a through concave groove, with a groove depth of 2 / 3 of the thickness of the adjustment module 14. Support rails 16 (using hardened steel rails) extend from the upper and lower edges of the through-section 15, and a fixing rack 17 (with the tooth surface facing forward of the equipment) is fixedly installed inside the groove.

[0036] The support frame 21 of the hoisting adjustment frame 2 is a welded steel frame structure. Two sliding support blocks 22 are symmetrically fixed to its top. The bottom of the sliding support blocks 22 is provided with V-shaped ribs, which slide in cooperation with the V-shaped grooves of the adjustment rail 13. The support frame 21 protrudes forward at its centerline to form a raised frame 23 (a sealed dustproof housing). The drive mechanism 24 (a combination of servo motor and reducer) is installed inside the raised frame 23. The output end of the drive mechanism 24 is connected to a cylindrical transmission cylinder 25. The outer wall of the transmission cylinder 25 is welded with an inner support plate 26, and an internal drive gear 27 is installed on its front output shaft. The rear side wall of the support frame 21 is provided with a roller assembly that matches the support rail 16, so that the whole is slidably installed on the support rail 16. At the same time, the internal drive gear 27 precisely meshes with the teeth of the fixed rack 17.

[0037] In this embodiment, the support rail 16 provides the main bearing surface, bearing the vertical load and overturning moment of the hoisting adjustment frame 2; the adjustment rail 13 constrains the Y-axis (perpendicular to the direction of movement) degree of freedom, suppressing torsional sway during horizontal movement; the V-groove rail structure automatically compensates for assembly gaps, improving system rigidity. The raised frame 23 houses the drive component 24 and places it close to the equipment's center of gravity, reducing motion inertia; the groove design of the through section 15 allows the fixed rack 17 to be embedded in the adjustment module 14, preventing damage from external impacts.

[0038] The driving mechanism 24 drives the transmission cylinder 25 to rotate, which in turn drives the internal drive gear 27 to move linearly along the fixed rack 17, pushing the support frame 21 and its load (including the drilling casing 5) to move horizontally along the support track 16; the sliding support block 22 slides synchronously within the adjusting track 13, forming a double guide. If the casing tilt sensing component 9 detects that the horizontal deviation exceeds the limit, the driving mechanism 24 brakes urgently, and the V-shaped structure of the sliding support block 22 generates a self-locking effect with the adjusting track 13, instantly locking the position.

[0039] As shown in Embodiment 3, based on the structure of Embodiment 2, the lifting frame 3 and the lifting adjuster 6 are further refined: A vertical through slot 28 is provided on the side wall of the supporting frame 21, and the width of the slot is clearance-fitted with the lifting frame 3 (clearance ≤ 1.5mm). The main body of the lifting frame 3 is a rectangular welded frame structure 31 (steel box girder structure), and its four corners are embedded in the through slot 28. The bottom end of the frame structure 31 is welded with a lifting bottom connecting seat 32 (flange with bolt holes), and the lifting rail 7 is fixed to it with high-strength bolts.

[0040] The lifting adjuster 6 includes an internal base plate 61 welded inside the support frame 21. Vertical lifting slide bars 37 (with an I-beam cross-section) are fixed to the rear edges of both sides of the hanging frame 31. External locking blocks 62 (U-shaped locking seats with wear-resistant nylon bushings) are installed on the internal base plate 61 corresponding to the positions of the lifting slide bars 37, and the lifting slide bars 37 are fitted into them to form anti-sagging guides. A rear fixing plate 63 is welded to the rear edge of the internal base plate 61, and a rear driver 64 is installed on it. A lifting rack 66 is fixed to the rear edge of the hanging frame 31, and the output shaft of the rear driver 64 is connected to a drive gear 65, which meshes precisely with the lifting rack 66.

[0041] A top support block 33 is fixed to the top of the hanging frame 31, and a drag chain connecting block 34 extends laterally from the top support block 33. A drag chain frame plate 35 is welded to the inner wall of the support frame 21, and a lifting drag chain 36 (enclosed steel chain groove) is fixed on it. The top of the lifting drag chain 36 is hinged to the drag chain connecting block 34.

[0042] During initial positioning, the rear driver 64 drives the drive gear 65 to rotate, which in turn drives the lifting rack 66 and the lifting frame 31 to rise to the highest position along the outer clamping block 62 (the insertion slot 28 acts as a limit), reserving space for the casing hoisting.

[0043] After the drilling casing 5 is installed, the rear-mounted drive 64 reverses and slowly lowers the lifting frame 31. The rigid engagement between the lifting slide bar 37 and the outer clamping block 62 suppresses lateral swaying, and the lifting rack 66 ensures even load distribution.

[0044] The lifting cable chain 36 extends and retracts during the lifting process, always protecting the hydraulic lines and sensor cables; when the lifting frame 31 touches the lower limit, the rear drive 64 automatically cuts off the power and brakes.

[0045] As shown in Embodiment 4, based on the structure of the aforementioned embodiments, the drill pipe mounting base 4, the casing limiting sleeve assembly 8, and the casing tilt sensing assembly 9 are further refined: Several support blocks 47 are welded to both sides of the rectangular frame of the drill pipe mounting base 4. Independent support legs can be connected externally via adjustable bolts to enhance the foundation bearing capacity. A lifting connection bolt 43 (high-strength alloy steel pin) is installed at the top of the frame, which is pinned to the ear plate at the bottom of the lifting rail 7. A horizontal inner support plate 96 (steel plate with a thickness ≥15mm) is welded inside the frame of the drill pipe mounting base 4, and an inner plate track 97 (linear slide rail) is installed parallel to its surface. A sliding plate 94 (rectangular steel plate) is embedded into the inner plate track 97 via a bottom slider, enabling X-axis sliding. The pipe through slot 42 is a convex-shaped through slot, with an extension slot 44 extending longitudinally. An abutment pad 95 (polyurethane elastomer) is fixed to the upper surface of the sliding plate 94, with the upper end of the abutment pad 95 protruding into the extension slot 44 and flexibly contacting the outer wall of the drill casing 5.

[0046] The casing limiting sleeve assembly 8 includes a limiting sleeve base 81 (annular flange) welded to the top surface of the mounting base plate 41, on which a limiting tube ring 82 is bolted. The limiting tube ring 82 has an embedded through-tube sleeve 83 (a conical cylinder lined with tungsten carbide alloy) to constrain the radial displacement of the top of the drilling casing 5. Adjusting cylinders 84 (double-acting cylinders) are symmetrically installed on both sides of the through-tube slot 42, their piston rods connected to a lifting rod 85 (a carbide column), the top of which supports the bottom of the limiting sleeve base 81.

[0047] The sleeve tilt sensing assembly 9 includes a support frame 91 vertically fixed to the mounting base plate 41, on which a detection cylinder 92 is mounted. A pneumatic piston rod 93 is fixed to the back of a sliding plate 94, with its rod end sealed and inserted into the inner cavity of the detection cylinder 92. The detection cylinder 92 is connected to a pneumatic pressure sensor 98 (0-1 MPa range) via an air pipe, and the pneumatic pressure sensor 98 is fixed to the side wall of an internal support plate 96.

[0048] Static limit: After the drilling casing 5 is inserted into the pipe slot 42, its top pipe section is inserted into the pipe sleeve 83. In the initial state, the limiting pipe ring 82 is raised to the preset height by the adjusting cylinder 84 through the lifting rod 85.

[0049] Dynamic drilling compensation: During the casing rotation and drilling process, if the casing wobbles, its side edge will press against the pad 95. This pressing action drives the sliding plate 94 to move along the inner plate track 97. The movement of the sliding plate 94 further drives the pneumatic piston rod 93 fixed on its back to push into the inner cavity of the detection barrel 92, thereby compressing the sealed gas inside the detection barrel 92. This gas compression causes a change in the pressure inside the cavity, and this change value (ΔP) is detected and captured in real time by the pressure sensor 98. The control system receives the pressure change signal (ΔP) from the pressure sensor 98 and converts it into the casing's tilt angle and deviation direction information in real time.

[0050] Based on the calculated tilt data, the control system dynamically adjusts the extension and retraction of the adjusting cylinders 84 installed on both sides of the casing slot 42: for example, if the casing is detected to be tilted to the left, the control system commands the left adjusting cylinder 84 to retract and the right adjusting cylinder 84 to extend; the extension and retraction of the adjusting cylinders 84 acts on the bottom of the limiting cylinder base 81 through the lifting rod 85, thereby changing the tilt angle of the limiting tube ring 82 relative to the mounting base plate 41; this tilt angle adjustment forcibly corrects the positioning posture of the top of the drilling casing 5, making it return to a vertical state.

[0051] In addition, as an auxiliary support measure, when the length of the installed casing exceeds 8 meters, the operator will attach an external support bracket to the support block 47 on the side of the drill pipe mounting base 4 frame. The bracket is supported on the foundation and its function is to distribute the weight of the mounting base and its load, effectively avoiding the problem of the mounting base settling or tilting due to the excessive length of the casing or the soft foundation.

[0052] This embodiment employs a pneumatic tilt detection mechanism. The contact pad 95 converts the radial displacement of the sleeve into the displacement of the sliding plate 94, causing the pneumatic piston rod 93 to linearly compress the air chamber, thereby causing the air pressure sensor 98 to output a voltage signal. In this embodiment, every 1° tilt of the sleeve results in a 0.02MPa change in air pressure, with a detection sensitivity of 0.05mm / mm. Furthermore, the dual adjusting cylinders 84 independently control the height of both sides of the limiting cylinder base 81, forming a tilt angle adjustment range of 0-2°.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A geological drilling casing hoisting and positioning device, comprising a positioning adjustment assembly (1), a hoisting adjustment frame (2) mounted on the positioning adjustment assembly (1) and slidable thereal, a drilling casing mounting base (4) disposed at the bottom of the hoisting adjustment frame (2), and a drilling casing (5) mounted on the drilling casing mounting base (4); characterized in that: The lifting adjustment frame (2) is vertically inserted with a frame box type lifting frame (3), which is driven to lift by a lifting adjuster (6) located on the side of the lifting adjustment frame (2); the bottom of the lifting frame (3) is equipped with a lifting rail (7), and the drilling pipe mounting seat (4) is suspended on the lifting rail (7). The drilling pipe mounting base (4) includes a mounting base plate (41) and a through-hole (42) thereon; the drilling casing (5) is inserted into the through-hole (42); a casing limiting cylinder assembly (8) is provided at the slot of the through-hole (42), and the top of the drilling casing (5) is limited to the casing limiting cylinder assembly (8); a casing tilt sensing assembly (9) is provided on the side edge of the mounting base plate (41), and the assembly is supported on the side wall of the drilling casing (5) to sense its tilt in real time.

2. The geological drilling casing hoisting and positioning device according to claim 1, characterized in that: The positioning adjustment component (1) includes: The longitudinally extending adjustment base plate (11) has an adjustment track (13) along its rear edge. Support column (12) supporting the adjustment base plate (11); The adjustment module (14) mounted on the adjustment base plate (11) has a central through section (15) with a fixed rack (17) and a parallel support rail (16). The sliding support block (22) of the hoisting adjustment frame (2) engages with the adjustment track (13), and its support frame (21) drives the internal drive gear (27) to mesh with the fixed rack (17) through the drive mechanism (24) in the raised frame (23).

3. The geological drilling casing hoisting and positioning device according to claim 2, characterized in that: The support frame (21) and the support rail (16) are fitted with a dovetail groove slider pair, and the internal drive gear (27) achieves floating meshing transmission through the transmission cylinder (25) and the inner support plate (26).

4. The geological drilling casing hoisting and positioning device according to claim 1, characterized in that: The lifting regulator (6) includes: Built-in base plate (61) fixed in the support frame (21); The lifting slide bar (37) located on the rear side of the hanging frame (31) forms a sliding pair with the outer clamping block (62); The rear driver (64) is mounted via a rear fixed plate (63), and its output drive gear (65) meshes with the lifting rack (66) to drive the lifting frame (3).

5. The geological drilling casing hoisting and positioning device according to claim 4, characterized in that: The top of the suspended frame (31) is provided with a top support block (33), which is connected to the lifting drag chain (36) through the drag chain link block (34); the top of the lifting drag chain (36) is fixed to the drag chain frame plate (35) of the support frame (21), forming a displacement compensation system.

6. The geological drilling casing hoisting and positioning device according to claim 1, characterized in that: The sleeve limiting sleeve assembly (8) includes: Limiting cylinder base (81) with tapered limiting tube ring (82); The adjusting cylinders (84) are symmetrically arranged on both sides of the through-hole (42), and their lifting rods (85) support the limiting cylinder base (81) through a ball joint structure.

7. The geological drilling casing hoisting and positioning device according to claim 1, characterized in that: The sleeve tilt sensing assembly (9) includes: Inner plate track (97) located inside the mounting base plate (41); A sliding plate (94) is slidably installed on the inner plate track (97), and a polyurethane abutment pad (95) is provided on its top. The pneumatic piston rod (93) is fixedly connected to the sliding plate (94), and its telescopic end is sealed and installed inside the testing barrel (92); The air pressure sensor (98) connected to the test barrel (92) calculates the sleeve tilt angle by measuring the change in air pressure.

8. The geological drilling casing hoisting and positioning device according to claim 7, characterized in that: The through-hole (42) has a convex shape and is provided with an extension groove (44) to limit the upper part of the sliding plate (94).

9. The geological drilling casing hoisting and positioning device according to claim 1, characterized in that: The mounting base plate (41) is provided with arrayed support blocks (47) around its perimeter, which are connected to external support legs through magnetorheological dampers.

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