A slope soil layer drilling device

Abstract

The application discloses a slope soil layer drilling device and relates to the field of soil layer drilling.The drilling device comprises a drilling guide sleeve for the rotation of a drill rod, and a limiting mechanism is connected to the outer wall of the drilling guide sleeve to limit and support the drilling guide sleeve in a borehole; a fine adjustment and deviation correction mechanism is movably arranged below the limiting mechanism; the limiting mechanism is used for supporting in the borehole, and the fine adjustment and deviation correction mechanism is used for fine adjustment and deviation correction, thereby reducing the risk of an inclined hole and the like.The drilling device can support the sidewall of the borehole during use, reduce the disturbance of the soil body around the borehole by the drill bit during drilling, reduce the risk of hole collapse, and correct the deviation during drilling, so that unqualified quality holes such as inclined holes are avoided, and the construction quality is ensured; in addition, the drilling device is convenient to assemble and disassemble, can further ensure the construction period and quality and save the construction cost in the construction of uneven geological soil bodies such as slopes.

Description

Technical Field

[0001] This invention relates to the field of soil drilling, specifically to a slope soil drilling device. Background Technology

[0002] In the foundation construction of mountain roads, bridges, and other infrastructure, sloping soil layers (soil masses) are frequently encountered due to geological environmental factors. The technical challenges faced during foundation drilling in sloping soil layers include:

[0003] 1. Due to loose soil, poor mud wall protection, or insufficient water level in the casing, the slope soil layer is prone to collapse.

[0004] 2. Plastic soil expands when it comes into contact with water, which causes the pore size to shrink. It is necessary to repeatedly clean the pores to enlarge the pore size.

[0005] 3. Drilling rig not being level, drill rods being bent, or uneven soil texture can all lead to hole deviation.

[0006] The first two types can be identified through visual observation, and problems can be rectified after they are discovered. However, the latter type is difficult to detect visually in the early stages. When the grouting construction is carried out, it is too late, often resulting in risks such as delays in the construction period and a significant increase in costs. Summary of the Invention

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A drilling device for sloping soil layers includes a drilling guide sleeve for the rotational movement of a drill rod, and the outer wall of the drilling guide sleeve is connected to a limiting mechanism for limiting and supporting the drilling guide sleeve in the borehole.

[0009] A fine-tuning and correction mechanism is movably provided below the limiting mechanism;

[0010] The limiting mechanism includes a limiting movable disc and a limiting fixed disc;

[0011] The limiting and fixing disc is positioned above the limiting and movable disc and fixed to the outer wall of the fixing connecting sleeve. The fixing connecting sleeve is sleeved on the outer wall of the drilling guide sleeve.

[0012] The limiting movable disc is set at the bottom end of the fixed connecting sleeve and is movably sleeved on the drilling guide sleeve;

[0013] The movable limiting disc and the fixed limiting disc are connected around their perimeter by several movable support structures.

[0014] The upward movement of the limiting disc causes several supporting structures to unfold and support the borehole.

[0015] The fine-tuning correction mechanism includes an upper correction sleeve and a lower correction sleeve for the drill pipe to pass through.

[0016] The upper correction sleeve is located at one end near the limiting movable disc and is used to connect with the limiting movable disc, thereby driving the upper correction sleeve to move through the limiting movable disc;

[0017] The lower correction sleeve is positioned below the upper correction sleeve;

[0018] The upper and lower correction sleeves are provided with several movable structures around them.

[0019] A flexible connection structure is provided between the upper and lower correction sleeves for flexibly connecting them.

[0020] Preferably, each of the support structures includes a first support arm and a second support arm that are pivotally hinged at the middle by a pin and are arranged in a cross manner;

[0021] One end of the first support arm is hinged to the limiting movable disc via a hinge seat. The other end of the first support arm is connected to a first sliding shaft. A first sliding block is provided at the end of the first support arm near the first sliding shaft. The first sliding block has a first sliding guide groove. The first sliding shaft and the first sliding guide groove are limited and slidably adapted to each other. The end of the first sliding block away from the first support arm is used to connect to the limiting support arm plate.

[0022] The second support arm is connected to a second sliding shaft at one end near the limiting and fixing disc. A second sliding block is provided at one end of the second support arm near the second sliding shaft. The second sliding block has a second sliding guide groove. The second sliding shaft and the second sliding guide groove are limited and slidably adapted to each other. The second sliding block is hinged to the limiting and fixing disc via a hinge seat.

[0023] The other end of the second support arm is rotatably hinged to the fixed block via a pin, and the end of the fixed block away from the second support arm is used to connect with the limiting support arm plate.

[0024] Preferably, the end of the limiting and fixing disc away from the limiting and movable disc is provided with a hydraulic rod having a through blind hole for the drilling guide sleeve to pass through;

[0025] One end of the drilling guide sleeve passes through the blind hole of the hydraulic rod and through the fixed connection sleeve, and the end is used to connect with the upper correction sleeve.

[0026] The drilling guide sleeve is used for detachable connection with the blind hole thread of the cylinder body of the hydraulic rod, and the end of the fixed connection sleeve near the hydraulic rod is used to connect with the outer wall of the cylinder body of the hydraulic rod.

[0027] The output rod of the hydraulic rod, which is designed to be hollow, is telescopically positioned between the drilling guide sleeve and the fixed connecting sleeve.

[0028] The end of the output rod of the hydraulic rod is used to connect with the limiting movable disc. The extension and retraction of the hydraulic rod drives the limiting movable disc to move.

[0029] Preferably, the flexible connection structure includes a through-hole connecting rod structure;

[0030] The connecting rod structure is connected to a first ball head at one end near the limiting movable disc. The first ball head is movably connected to a first ball seat. The first ball seat is used to connect to one end of a centrally arranged central shaft. The other end of the central shaft passes through the upper sleeve of the correction and its end is used to be detachably connected to the drilling guide sleeve.

[0031] The connecting rod structure is connected to a second ball head at one end away from the limiting movable disk. The second ball head is movably connected to a second ball seat. The second ball seat is used to connect to one end of a through-hole connecting shaft. The other end of the connecting shaft passes through the lower correction sleeve.

[0032] The central shaft, first ball seat, first ball head, connecting rod structure, second ball head, second ball seat, and connecting shaft are coaxially connected for the passage of the drill rod.

[0033] The drill rod is rotatably connected to the central shaft and the connecting shaft via bearings.

[0034] Preferably, a rotation adjustment shaft is provided in the hollow cavity of the connecting ball rod structure via a bearing for rotational connection;

[0035] The end of the rotary adjustment shaft near the central shaft is connected to the drill pipe via a shaft connector for detachment.

[0036] The end of the rotary adjustment shaft near the connecting shaft is used for detachable connection with the drill pipe via a shaft connector.

[0037] The end of the drill rod, which is used to rotate the drill rod located in the through cavity of the connecting shaft and is detachably connected to the end of the drill rod away from the connecting ball rod structure, is connected to a connecting head seat.

[0038] Preferably, the upper correction sleeve is elastically and movably sleeved on the central shaft;

[0039] The end of the upper sleeve that is close to the limiting movable disk is connected to the limiting movable disk through a movable sleeve and is movably sleeved on the outer wall of the drilling guide sleeve;

[0040] An elastic spring is provided between the upper correction sleeve and the central shaft;

[0041] The elastic spring is elastically sleeved on the central shaft, with one end of the elastic spring used to connect to the central shaft and the other end of the elastic spring used to connect to the inner wall of the upper sleeve for correction.

[0042] Preferably, each of the movable structures includes a first movable adjusting arm plate and a second movable adjusting arm plate, wherein the first movable adjusting arm plate is disposed on the side closer to the upper correcting sleeve, and the second movable adjusting arm plate is disposed on the side closer to the lower correcting sleeve.

[0043] The first movable adjusting arm plate and the second movable adjusting arm plate are hinged together at their closest ends via a hinge seat.

[0044] The end of the first movable adjusting arm plate near the upper sleeve of the correction sleeve is used to be movably connected to the upper sleeve of the correction sleeve through a drive structure component;

[0045] The second movable adjusting arm plate is hinged to the lower correction sleeve at one end via a hinge seat.

[0046] The lower correction sleeve is used to be sleeved on the connecting shaft and threaded to the inner wall of the connecting shaft.

[0047] Preferably, all of the drive structure components include a drive cylinder;

[0048] The side wall of the upper sleeve for correction is provided with a movable blind hole corresponding to the drive cylinder. The drive cylinder is disposed in the movable blind hole, and one end of the drive cylinder is hinged to the movable blind hole via a hinge seat. The other end of the drive cylinder is hinged to the first movable adjusting arm plate via a hinge seat.

[0049] Preferably, a straightening plate is connected to the first movable adjusting arm plate and the second movable adjusting arm plate respectively.

[0050] The beneficial effects of this invention are: the purpose of this invention is to provide a drilling device for slope soil layers, which is mainly used during construction when encountering uneven soil conditions such as slopes; the drilling device:

[0051] 1. When in use, it can provide some support to the sidewall of the borehole, reduce the disturbance of the soil and surrounding soil during drilling, and reduce the risk of borehole collapse.

[0052] 2. It can perform correction and adjustment during the drilling process to avoid creating substandard holes such as inclined holes, thus ensuring the quality of construction;

[0053] 3. Easy to install and dismantle, it can further ensure the construction period and quality and save construction costs in the construction of uneven soil such as slopes. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the connection structure of a slope soil drilling device according to the present invention;

[0055] Figure 2 This is an exploded schematic diagram of the connection structure of a slope soil drilling device according to the present invention;

[0056] Figure 3 This is a schematic diagram of the limiting mechanism of a slope soil drilling device according to the present invention;

[0057] Figure 4 This is an exploded schematic diagram of the limiting mechanism of a slope soil drilling device according to the present invention;

[0058] Figure 5 This is a schematic diagram of the support structure of a slope soil drilling device according to the present invention;

[0059] Figure 6 This is an exploded schematic diagram of the support structure of a slope soil drilling device according to the present invention;

[0060] Figure 7 This is a schematic diagram of the fine-tuning and correction mechanism of a slope soil drilling device according to the present invention;

[0061] Figure 8 This is a partially exploded schematic diagram of the fine-tuning and correction mechanism of a slope soil drilling device according to the present invention;

[0062] Figure 9 This is an exploded schematic diagram of the connecting structure of the drive structure of a slope soil drilling device according to the present invention;

[0063] Figure 10 This is a schematic diagram of the flexible connection structure of a slope soil drilling device according to the present invention;

[0064] Figure 11 This is an exploded view of the flexible connection structure of a slope soil drilling device according to the present invention;

[0065] In the diagram, 1-drilling guide sleeve, 2-hydraulic rod, 3-fixed connecting sleeve, 31-limiting movable disc, 32-limiting fixed disc, 33-first support arm, 34-second support arm, 35-limiting support arm plate, 41-correcting upper sleeve, 42-correcting lower sleeve, 43-connecting ball rod structure, 44-central shaft, 45-connecting shaft, 46-first movable adjusting arm plate, 47-second movable adjusting arm plate, 48-straightening plate, 311-movable sleeve, 331-first sliding shaft, 332-first sliding block, 341-fixed block, 342-second sliding shaft, 343-second sliding block, 411-drive cylinder, 431-second ball head, 432-first ball head, 441-elastic spring, 451-connecting head seat, 4311-second ball seat, 4321-first ball seat. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0067] Example 1

[0068] like Figures 1 to 11 As shown, a drilling device for slope soil layers is mainly used during construction when encountering uneven soil conditions such as slopes. It serves as a fine-tuning and correction device during drilling to further ensure the quality of the borehole construction. The drilling device includes a drilling guide sleeve 1 for the rotation and movement of the drill rod. A limiting mechanism is connected to the outer wall of the drilling guide sleeve 1 to limit and support it within the borehole. A fine-tuning and correction mechanism is movably installed below the limiting mechanism. A drill rod is rotatably threaded through the drilling guide sleeve 1 via bearings. The top end of the drill rod is used for extension, i.e., connecting to an extended drill rod. The other end of the extended drill rod is used to connect to the output end of the drilling rig (which is an existing drilling machine). Initially, when using this device, the drilling device is fixedly installed in a suitable position on the drilling rig frame, and the top end of the drill rod in the drilling guide sleeve 1 is connected to the output end of the drilling rig. The drilling rig drives the drill bit connected to the bottom end of the drill rod, which "rotates and moves" through the drilling device, to drill a hole. After drilling to a certain depth, the drilling device is extended into the borehole by "drill rod extension" for drilling, guiding, and correction. It should be noted that the "drill bit" is existing technology. It can be driven by the output end of the drilling rig to rotate and drill downwards; or it can be driven by a motor or other means on an existing "drill bit"; both types of "drill bits" are applicable.

[0069] Furthermore, the limiting mechanism includes a limiting movable disc 31 and a limiting fixed disc 32; the limiting fixed disc 32 is positioned above the limiting movable disc 31 and fixed to the outer wall of the fixed connecting sleeve 3, which is fitted onto the outer wall of the drilling guide sleeve 1; the limiting movable disc 31 is positioned at the bottom end of the fixed connecting sleeve 3 and movably fitted onto the drilling guide sleeve 1; several movable support structures are connected around the limiting movable disc 31 and the limiting fixed disc 32; by moving the limiting movable disc 31 upwards, the several support structures are moved and unfolded to support the borehole, thus playing a role in supporting the borehole wall. The fine-tuning and correction mechanism includes an upper correction sleeve 41 and a lower correction sleeve 42 for the drill pipe to pass through. The upper correction sleeve 41 is located near the limiting movable disk 31 and is used to connect with the limiting movable disk 31, which drives the upper correction sleeve 41 to move (upward). The lower correction sleeve 42 is located below the upper correction sleeve 41. Several movable structures are arranged around the upper correction sleeve 41 and the lower correction sleeve 42. These movable structures are used to adjust the upper correction sleeve 41 and the lower correction sleeve 42. The lower sleeve 42 is "movably connected" to ensure the verticality of the two during the initial drilling process. Furthermore, a flexible connection structure is provided between the upper sleeve 41 and the lower sleeve for flexibly connecting the upper sleeve 41 and the lower sleeve 42. The upper sleeve 41 and the lower sleeve 42 are "flexibly fine-tuned" through this flexible connection structure. When a deviation occurs during drilling in uneven soil such as slopes, timely correction and adjustment can be performed to ensure the (verticality) quality of the borehole.

[0070] Example 2

[0071] Furthermore, such as Figures 3 to 6As shown, the support structure of the drilling device includes a first support arm 33 and a second support arm 34, which are pivotally hinged at the center and arranged in a cross configuration. One end of the first support arm 33 is hinged to a limiting movable disc 31 via a hinge seat. The other end of the first support arm 33 is connected to a first sliding shaft 331. A first sliding block 332 is provided at the end of the first support arm 33 near the first sliding shaft 331. The first sliding block 332 has a first sliding guide groove. The first sliding shaft 331 is limited and slidably adapted to the first sliding guide groove. The end of the first sliding block 332 away from the first support arm 33 is used to connect with the limiting... The second support arm 34 is connected to the support plate 35; one end of the second support arm 34 near the limiting and fixing disc 32 is connected to the second sliding shaft 342, and the other end of the second support arm 34 near the second sliding shaft 342 is provided with the second sliding block 343. The second sliding block 343 has a second sliding guide groove. The second sliding shaft 342 and the second sliding guide groove are limited and slidably adapted. The second sliding block 343 is hinged to the limiting and fixing disc 32 through a hinge seat. The other end of the second support arm 34 is rotatably hinged to the fixing block 341 through a pin. The end of the fixing block 341 away from the second support arm 34 is used to connect with the limiting support arm plate 35. The first support arm 33 and the second support arm 34 are set by "cross rotation". By controlling the "upward movement" of the limiting movable disk 31, the cross-set first support arm 33 and second support arm 34 are driven to unfold outward (towards the outer wall of the borehole). The limiting support arm plate 35, which is "connected" to the first support arm 33 and the second support arm 34, respectively, comes into contact with the outer wall of the borehole, thereby supporting the borehole wall and reducing the disturbance of the soil and surrounding soil during the drilling process of the drill bit below, thus reducing the risk of borehole collapse.

[0072] Furthermore, the end of the limiting fixed disc 32 away from the limiting movable disc 31 is provided with a hydraulic rod 2 (i.e., a hydraulic rod 2 with a through cavity) that has a blind hole for the passage of the drilling guide sleeve 1; one end of the drilling guide sleeve 1 passes through the blind hole of the hydraulic rod 2 and through the fixed connecting sleeve 3, and the end is used to connect with the upper correction sleeve 41; the drilling guide sleeve 1 is used to be threadedly detachably connected to the blind hole of the cylinder of the hydraulic rod 2 (the drilling guide sleeve 1 is used to pass through the blind hole of the hydraulic rod 2 with the through cavity, and through the blind hole of the output end of the hydraulic rod 2), and the end of the fixed connecting sleeve 3 near the hydraulic rod 2 is used to connect with the outer wall of the cylinder of the hydraulic rod 2; the output rod of the through-cavity hydraulic rod 2 is telescopically arranged between the drilling guide sleeve 1 and the fixed connecting sleeve 3; the end of the output rod of the hydraulic rod 2 is used to connect with the limiting movable disc 31, and the telescopic movement of the hydraulic rod 2 drives the limiting movable disc 31 to move.

[0073] That is, in the embodiment, by controlling the hydraulic rod 2 to move upward, the hydraulic rod 2 drives the limiting movable disc 31 to move upward; thereby driving the several cross-arranged first support arms 33 and second support arms 34 to unfold toward the outer wall of the drill hole, and through several limiting support arm plates 35 to contact the four walls of the drill hole, so as to limit the drill rod and support the hole wall.

[0074] Example 3

[0075] Furthermore, such as Figures 7 to 10 As shown, the flexible connection structure for flexibly connecting the upper correction sleeve 41 and the lower correction sleeve 42 includes a through-hole connecting ball rod structure 43; one end of the connecting ball rod structure 43 near the limiting movable disk 31 is connected to a first ball head 432, which is movably connected to a first ball seat 4321. The first ball seat 4321 is used to connect to one end of the through-hole central shaft 44, and the other end of the central shaft 44 passes through the upper correction sleeve 41 and is used for detachable connection with the drilling guide sleeve 1; one end of the connecting ball rod structure 43 away from the limiting movable disk 31 is connected to a second ball head 431, which is movably connected to a second ball seat 4311. The second ball seat 4311 is used to connect to one end of the through-hole connecting shaft 45, and the other end of the connecting shaft 45 passes through the lower correction sleeve 42. The central shaft 44, the first ball seat 4321, the first ball head 432, the connecting rod structure 43, the second ball head 431, the second ball seat 4311, and the connecting shaft 45 are coaxially connected for the passage of the drill rod; the drill rod is rotatably connected to the central shaft 44 and the connecting shaft 45 through bearings (equivalent to the drill rod rotating through the drilling device, and the connection position between the upper sleeve 41 and the lower sleeve 42 is also a "flexible connection").

[0076] In this embodiment, the hydraulic rod 2 moves upward, which in turn drives the limiting movable disk 31 to move upward. This, in turn, drives the upper correction sleeve 41 connected to the limiting movable disk 31 to move upward. Consequently, the upper correction sleeve 41 drives several movable structures to move synchronously. Since the upper correction sleeve 41 and the lower correction sleeve 42 are connected by a flexible connection structure, the position of the connection is ensured by this movable structure. This ensures the verticality of the drill rod passing through the drilling device when no fine adjustment is made, thus preventing drilling deviation during the drilling process.

[0077] Example 4

[0078] Furthermore, a rotating adjustment shaft is rotatably connected to the through cavity of the connecting ball rod structure 43 via a bearing; one end of the rotating adjustment shaft near the central shaft 44 is connected to the drill rod via a shaft connector for disassembly and detachment (the end of the drill rod rotatably connected to the central shaft 44 can be a threaded connection, but the connection is further reinforced to prevent loosening); the other end of the rotating adjustment shaft near the connecting shaft 45 is connected to the drill rod via a shaft connector for disassembly and detachment (the end of the drill rod rotatably connected to the connecting shaft 45 can also be a threaded connection, but the connection is further reinforced to prevent loosening); a connecting head seat 451 is detachably connected to the end of the drill rod rotatably connected to the through cavity of the connecting shaft 45 and away from the connecting ball rod structure 43 (the connecting head seat 451 is used to connect the drill bit or to connect the extended drill rod, the other end of which is used to connect the drill bit). Furthermore, the upper correction sleeve 41 is elastically and movably sleeved on the central shaft 44; one end of the upper correction sleeve 41 near the limiting movable disk 31 is connected to the limiting movable disk 31 through a movable sleeve 311, and the movable sleeve 311 is located on the outer wall of the drilling guide sleeve 1; an elastic spring 441 is provided between the upper correction sleeve 41 and the central shaft 44; the elastic spring 441 is elastically sleeved on the central shaft 44, and one end of the elastic spring 441 is used to connect to the central shaft 44, and the other end of the elastic spring 441 is used to connect to the inner wall of the upper correction sleeve 41. This elastic spring 441 is used to make the upper correction sleeve 41 and the lower correction sleeve 42 "elastically and flexibly connected", which serves to protect the upper correction sleeve 41 and the lower correction sleeve 42.

[0079] With this design, the drill rod section is pre-installed in the drilling device, which is equivalent to the drilling device being an "intermediate connecting structure". When in uneven soil conditions such as slopes, the drilling device is installed and connected for use.

[0080] In this embodiment, several verticality sensors are installed in the drilling device. These sensors are electrically connected to the drilling rig control circuit and display control panel on the ground. During drilling, if the drill bit tilts, the verticality sensors will detect and provide feedback. At this point, the movable structure will be controlled to move, causing the drill rod connected to the bottom of the connecting ball rod structure 43 to move. The drill bit will be slowly corrected and returned to the correct position during drilling, based on the actual situation.

[0081] Example 5

[0082] Furthermore, such as Figures 7 to 10As shown, the movable structure includes a first movable adjusting arm plate 46 and a second movable adjusting arm plate 47. The first movable adjusting arm plate 46 is located on the side near the upper correcting sleeve 41, and the second movable adjusting arm plate 47 is located on the side near the lower correcting sleeve 42. The ends of the first movable adjusting arm plate 46 and the second movable adjusting arm plate 47 that are close to each other are hinged together by a hinge seat. The end of the first movable adjusting arm plate 46 near the upper correcting sleeve 41 is movably connected to the upper correcting sleeve 41 by a drive structure. The end of the second movable adjusting arm plate 47 near the lower correcting sleeve 42 is hinged together with the lower correcting sleeve 42 by a hinge seat. The lower correcting sleeve 42 is fitted onto the connecting shaft 45 and is threadedly connected to the inner wall of the connecting shaft 45.

[0083] And, as Figure 9 As shown, the drive structure components of this setup all include a drive cylinder 411; the side wall of the upper corrective sleeve 41 has a movable blind hole corresponding to the drive cylinder 411, the drive cylinder 411 is disposed in the movable blind hole (the movable blind hole limits and guides the movement of the output rod of the drive cylinder 411), and one end of the drive cylinder 411 is hinged to the movable blind hole via a hinge seat, and the other end of the drive cylinder 411 is hinged to the first movable adjusting arm plate 46 via a hinge seat. Furthermore, a straightening plate 48 is connected to the first movable adjusting arm plate 46 and the second movable adjusting arm plate 47 respectively.

[0084] In this embodiment, when the drill bit is found to be tilted (drill deviation) during drilling, for example, if the drill bit tilts to the "left", the drive cylinder 411 on the side closer to the left of the drill bit is controlled to "extend slowly downwards", while the drive cylinder 411 on the side away from the left of the drill bit (the opposite side of the drill bit tilt) is controlled to "retract slowly upwards". That is, during drilling, the drill bit is slowly adjusted to correct its deviation and return it to the correct position. (Since multiple drive cylinders 411 are provided, during adjustment, the drive cylinder 411 on the side closer to the tilt is adjusted to retract according to the actual situation, while the drive cylinder 411 on the side away from the tilt is adjusted to extend according to the actual situation). At the same time, the straightening plate 48 is designed with an arc-shaped structure, which can effectively bear force and provide support, facilitating fine-tuning of the direction.

Claims

1. A drilling device for slope soil layers, comprising a drilling guide sleeve for the rotational movement of the drill rod, characterized in that, The outer wall of the drilling guide sleeve is connected to a limiting mechanism for limiting and supporting the drilling guide sleeve in the borehole. A fine-tuning and correction mechanism is movably provided below the limiting mechanism; The limiting mechanism includes a limiting movable disc and a limiting fixed disc; The limiting and fixing disc is positioned above the limiting and movable disc and fixed to the outer wall of the fixing connecting sleeve. The fixing connecting sleeve is sleeved on the outer wall of the drilling guide sleeve. The limiting movable disc is set at the bottom end of the fixed connecting sleeve and is movably sleeved on the drilling guide sleeve; The movable limiting disc and the fixed limiting disc are connected around their perimeter by several movable support structures. The upward movement of the limiting disc causes several supporting structures to unfold and support the borehole. The fine-tuning correction mechanism includes an upper correction sleeve and a lower correction sleeve for the drill pipe to pass through. The upper correction sleeve is located at one end near the limiting movable disc and is used to connect with the limiting movable disc, thereby driving the upper correction sleeve to move through the limiting movable disc; The lower correction sleeve is positioned below the upper correction sleeve; The upper and lower correction sleeves are provided with several movable structures around them. A flexible connection structure is provided between the upper and lower correction sleeves for flexibly connecting the upper and lower correction sleeves. The flexible connection structure includes a hollow connecting ball-and-stick structure. The connecting rod structure is connected to a first ball head at one end near the limiting movable disc. The first ball head is movably connected to a first ball seat. The first ball seat is used to connect to one end of a centrally arranged central shaft. The other end of the central shaft passes through the upper sleeve of the correction and its end is used to be detachably connected to the drilling guide sleeve. The connecting rod structure is connected to a second ball head at one end away from the limiting movable disk. The second ball head is movably connected to a second ball seat. The second ball seat is used to connect to one end of a through-hole connecting shaft. The other end of the connecting shaft passes through the lower correction sleeve. The central shaft, first ball seat, first ball head, connecting rod structure, second ball head, second ball seat, and connecting shaft are coaxially connected for the passage of the drill rod. A drill rod is rotatably connected to the central shaft and the connecting shaft via a bearing. Each of the movable structures includes a first movable adjusting arm plate and a second movable adjusting arm plate. The first movable adjusting arm plate is located on the side closer to the upper correcting sleeve, and the second movable adjusting arm plate is located on the side closer to the lower correcting sleeve. The first movable adjusting arm plate and the second movable adjusting arm plate are hinged together at their closest ends via a hinge seat. The end of the first movable adjusting arm plate near the upper sleeve of the correction sleeve is used to be movably connected to the upper sleeve of the correction sleeve through a drive structure component; The second movable adjusting arm plate is hinged to the lower correction sleeve at one end via a hinge seat. The lower correction sleeve is used to be sleeved on the connecting shaft and threaded to the inner wall of the connecting shaft.

2. The slope soil drilling device according to claim 1, characterized in that, Each of the support structures includes a first support arm and a second support arm that are pivotally hinged together in the middle by a pin and are arranged in a cross manner. One end of the first support arm is hinged to the limiting movable disc via a hinge seat. The other end of the first support arm is connected to a first sliding shaft. A first sliding block is provided at the end of the first support arm near the first sliding shaft. The first sliding block has a first sliding guide groove. The first sliding shaft and the first sliding guide groove are limited and slidably adapted to each other. The end of the first sliding block away from the first support arm is used to connect to the limiting support arm plate. The second support arm is connected to a second sliding shaft at one end near the limiting and fixing disc. A second sliding block is provided at one end of the second support arm near the second sliding shaft. The second sliding block has a second sliding guide groove. The second sliding shaft and the second sliding guide groove are limited and slidably adapted to each other. The second sliding block is hinged to the limiting and fixing disc via a hinge seat. The other end of the second support arm is rotatably hinged to the fixed block via a pin, and the end of the fixed block away from the second support arm is used to connect with the limiting support arm plate.

3. The slope soil drilling device according to claim 2, characterized in that, The end of the limiting fixed disc away from the limiting movable disc is provided with a hydraulic rod that has a through blind hole for the drilling guide sleeve to pass through. One end of the drilling guide sleeve passes through the blind hole of the hydraulic rod and through the fixed connection sleeve, and the end is used to connect with the upper correction sleeve. The drilling guide sleeve is used for detachable connection with the blind hole thread of the cylinder body of the hydraulic rod, and the end of the fixed connection sleeve near the hydraulic rod is used to connect with the outer wall of the cylinder body of the hydraulic rod. The output rod of the hydraulic rod, which is designed to be hollow, is telescopically positioned between the drilling guide sleeve and the fixed connecting sleeve. The end of the output rod of the hydraulic rod is used to connect with the limiting movable disc. The extension and retraction of the hydraulic rod drives the limiting movable disc to move.

4. The slope soil drilling device according to claim 1, characterized in that, The hollow cavity of the connecting ball rod structure is equipped with a rotation adjustment shaft that rotates through a bearing; The end of the rotary adjustment shaft near the central shaft is connected to the drill pipe via a shaft connector for detachment. The end of the rotary adjustment shaft near the connecting shaft is used for detachable connection with the drill pipe via a shaft connector. The end of the drill rod, which is used to rotate the drill rod located in the through cavity of the connecting shaft and is detachably connected to the end of the drill rod away from the connecting ball rod structure, is connected to a connecting head seat.

5. A slope soil drilling device according to claim 4, characterized in that, The upper sleeve for correction is elastically and movably sleeved on the central shaft; The end of the upper sleeve that is close to the limiting movable disk is connected to the limiting movable disk through a movable sleeve and is movably sleeved on the outer wall of the drilling guide sleeve; An elastic spring is provided between the upper correction sleeve and the central shaft; The elastic spring is elastically sleeved on the central shaft, with one end of the elastic spring used to connect to the central shaft and the other end of the elastic spring used to connect to the inner wall of the upper sleeve for correction.

6. The slope soil drilling device according to claim 1, characterized in that, All drive components include drive cylinders; The side wall of the upper sleeve for correction is provided with a movable blind hole corresponding to the drive cylinder. The drive cylinder is disposed in the movable blind hole, and one end of the drive cylinder is hinged to the movable blind hole via a hinge seat. The other end of the drive cylinder is hinged to the first movable adjusting arm plate via a hinge seat.

7. A slope soil drilling device according to claim 1, characterized in that, The first movable adjusting arm plate and the second movable adjusting arm plate are respectively connected to a straightening plate.

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