A fixed seat for field drilling

Abstract

The utility model relates to a kind of fixed seats for field drilling, including the base placed on ground surface, the first side inclination support component capable of changing the inclination angle of transverse is placed on the base, and the second side inclination support component capable of changing the inclination angle in longitudinal direction is further provided on the top surface of the first side inclination support component away from the base, the first side inclination support component is stacked according to the way that it and the second side inclination support component can be adjusted in inclination angle on two vertical planes perpendicular to each other;Several peripheral insertion limit components capable of being inserted into stratum are detachably inserted on the seat body of the base by the way of annular spacing arrangement, so that the peripheral insertion limit component limits the placement position of base in the way of adjustable inner support expansion limit.The utility model can adjust the inclination angle of installation plane according to requirement and selectively adapt the drilling work of vertical shaft and inclined shaft, and can effectively correct the drilling angle of drill pipe.

Description

Technical Field

[0001] This utility model relates to the field of field drilling technology, and in particular to a fixed base for field drilling. Background Technology

[0002] Geological exploration drilling equipment is a type of equipment used for geological exploration after drilling holes on the ground. It can investigate and study geological conditions such as rocks, strata, minerals, and landforms in a specific area. Its function is to provide mineral reserves and geological data required for mine construction design when industrially valuable mineral deposits are discovered during mineral prospecting, in order to accurately determine the quality and quantity of minerals and the technical conditions for mining and utilization. Exploration methods mainly include pitting, trenching, drilling, and geophysical exploration. Among these, drilling refers to the use of geological exploration drilling equipment to drill holes underground to identify and delineate strata below the surface and to take samples along the hole depth. Geological exploration drilling equipment is usually used in the field. Considering that the ground in the field is often uneven, the ground in the drilling area needs to be leveled before the drilling equipment is assembled and used. Simultaneously, earthmoving compactors and other equipment are used to compact and harden the ground around the borehole to ensure that the mounting surface, such as the base or base plate, can be stably installed.

[0003] However, existing bases cannot be horizontally adjusted as needed during use, making them unsuitable for field construction environments. This results in problems such as drill pipe deviation due to changes in ground slope, which cannot be corrected, compromising drilling accuracy. This is particularly problematic for deviated well drilling operations requiring periodic adjustments to drill pipe inclination. Furthermore, existing bases lack a ground-connecting and stabilizing structure, leading to low stability on the surface and compromising positional stability during drilling, significantly impacting drilling performance. Utility Model Content

[0004] The purpose of this utility model is to provide a field drilling fixing seat that can adjust the tilt angle of the mounting plane according to the needs, selectively adapt to drilling work of vertical and inclined shafts, and effectively correct the drilling angle of the drill pipe. This solves the problems of existing seat structures being unable to adjust the tilt angle, unable to correct the drilling direction, thus affecting the drilling effect, and existing drill tool mounting seat structures being unable to be stably positioned on the ground, making them prone to positional displacement due to shaking and swaying during the drilling process, thus affecting the drilling accuracy.

[0005] The technical solution adopted by this utility model is as follows: a fixed base for field drilling, including a base placed on the ground surface, a first tilt support component capable of changing the lateral tilt angle is placed on the base, and a second tilt support component capable of changing the longitudinal tilt angle is also provided on the top surface of the first tilt support component away from the base. The first tilt support component and the second tilt support component are stacked and arranged in such a way that their tilt angles can be adjusted on two mutually perpendicular vertical planes. Several peripheral insertion limiting components capable of being inserted into the strata are also detachably inserted into the base body in a circumferentially spaced manner, so that the peripheral insertion limiting components limit the placement position of the base by an adjustable internal support expansion limiting method.

[0006] According to a preferred embodiment, the first tilting support assembly includes a U-shaped base plate, a U-shaped top plate, a rotating shaft, a translational support column, and a first tensioning limit rod. The U-shaped base plate is mounted on a base, and a U-shaped top plate is connected to the U-shaped base plate via the rotating shaft. A translational support column is slidably connected to the side of the U-shaped base plate away from the rotating shaft, and a first tensioning limit rod is rotatably disposed on the bottom surface of the U-shaped top plate away from the rotating shaft.

[0007] According to a preferred embodiment, a lower connecting strip is provided on the top surface of the U-shaped base plate, which can be connected to the rotating shaft, and an upper connecting strip is also provided on the bottom surface of the U-shaped top plate, which is coplanar with the lower connecting strip and connected to the rotating shaft.

[0008] According to a preferred embodiment, an inclined groove is provided on the U-shaped base plate for slidingly engaging the translational support plate column, and a transverse threaded positioning rod capable of limiting the position of the translational support plate column in the inclined groove is threadedly inserted at the end of the inclined groove away from the lower connecting strip; a notch is also provided on the U-shaped base plate for rotatably engaging the first tensioning limiting rod.

[0009] According to a preferred embodiment, a tensioning nut is also threaded onto the lower threaded section of the first tensioning limit rod.

[0010] According to a preferred embodiment, the second tilting support assembly includes a first L-shaped plate, a second L-shaped plate, a sliding support body, and a second tensioning limit rod. The first L-shaped plate is mounted on the U-shaped top plate and is rotatably connected to the second L-shaped plate. A sliding support body capable of changing the tilt angle of the second L-shaped plate is slidably supported on the first L-shaped plate. The second tensioning limit rod is rotatably provided on the bottom surface of the second L-shaped plate.

[0011] According to a preferred embodiment, the first L-shaped plate and the second L-shaped plate are respectively provided with a first through-hole and a second through-hole capable of accommodating the drill bit at their center.

[0012] According to a preferred embodiment, the seat of the peripheral insertion component is detachably mounted on the base, and a square insertion cylinder is connected to the bottom of the seat. An expansion limiting plate is rotatably connected to the bottom end of the square insertion cylinder. A lifting adjustment screw is threadedly inserted into the center of the seat, and the lower axial end of the lifting adjustment screw inserted into the square insertion cylinder is rotatably connected to a directional square column. The lower axial end of the directional square column is also connected to an inner support quadrangular pyramid that can limit the unfolding posture of the expansion limiting plate.

[0013] The beneficial effects of this utility model are: The first and second tilt support components of this application can be adjusted in tilt angle on two mutually perpendicular vertical planes. This allows the mounting plane defined by the top surface of the second tilt support component to form adjustable angles with the plane defined by the base, enabling the drill string mounted on the base to be used for drilling different vertical and inclined shafts as needed. Furthermore, the first and second tilt support components can flexibly change their attitude as required, correcting any deviation of the drill string during drilling to ensure drilling accuracy and ensure that the actual borehole diameter coincides with the pre-marked path, thus guaranteeing drilling effectiveness. The first and second tilt support components of this application can cooperate to achieve tilt angle adjustment in multiple directions, effectively increasing the coverage of the adjustable correction of the base and ensuring that tilt offsets in multiple directions can be effectively compensated, thereby expanding the applicability of tilt attitude adjustment. The first and second tilt support components provided in this application, through purely mechanical adjustment, can enhance the stability of the installation plane after adjustment to a certain extent. Compared with existing hydraulic adjustment mechanisms, the mechanical adjustment structure of this application can maintain the stability of the limit and the structural integrity under continuous shaking and vibration during drilling, thereby improving service life and positioning effect. The peripheral insertion component provided in this application can be inserted into the formation to improve the stability of the connection between the base and the ground when it is placed on the surface, making the base placement position more stable, improving the impact resistance of the base during drilling, and reducing the occurrence of slippage and other adverse displacements. The peripheral insertion component can expand in the formation to effectively abut against the soil, allowing it to be more firmly inserted into the formation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a preferred fixed base for field drilling proposed in this utility model; Figure 2 This is a schematic diagram of the side structure of a preferred field drilling mounting base proposed in this utility model; Figure 3 This is a cross-sectional schematic diagram of the first tilt support assembly of a preferred field drilling fixed base proposed in this utility model; Figure 4 This is a plan view of a preferred U-shaped base plate for a field drilling fixing seat proposed in this utility model; Figure 5 This is a cross-sectional schematic diagram of the second tilt support assembly of a preferred field drilling fixed base proposed in this utility model; Figure 6 This is a plan view of the first L-shaped plate of a preferred field drilling fixing base proposed in this utility model. Detailed Implementation

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] The technical solutions provided by this utility model will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that the descriptions of these embodiments are for the purpose of helping to understand this utility model, but do not constitute a limitation thereof. In some examples, because some implementation methods belong to existing or conventional technology, they are not described or are not described in detail. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and do not have any sequential or technical meaning.

[0017] The following is a detailed explanation with reference to the accompanying drawings. Example

[0018] This application provides a fixed base for field drilling, which includes a base 1, a first tilt support assembly 2, a second tilt support assembly 3, and a peripheral insertion assembly 4.

[0019] according to Figure 1-6In one specific embodiment, the base 1 can be placed on a pre-leveled and compacted perforated ground surface. A first tilt support assembly 2 capable of changing the lateral tilt angle is mounted on the base 1. A second tilt support assembly 3 capable of changing the longitudinal tilt angle is also provided on the top surface of the first tilt support assembly 2 away from the base 1. The first tilt support assembly 2 and the second tilt support assembly 3 are stacked and arranged in such a way that their tilt angles can be adjusted on two mutually perpendicular vertical planes, thus achieving multi-directional angle adjustment. Several peripheral insertion limiting components 4, which can be inserted into the ground layer, are also detachably inserted into the base 1 in a circumferentially spaced manner, thereby limiting the placement position of the base 1 by an adjustable internal support expansion limiting method. The first tilt support assembly 2 and the second tilt support assembly 3 provided in this application can be tilted at different angles on two mutually perpendicular vertical planes. This allows the mounting plane defined by the top surface of the second tilt support assembly 3 to form adjustable angles with the plane defined by the base 1 in different directions. This enables the drill bit mounted on the base to be used for drilling different vertical and inclined shafts as needed. Furthermore, the first tilt support assembly 2 and the second tilt support assembly 3 can flexibly change their attitude as needed, thereby correcting the deviation of the drill rod during drilling to ensure the drilling accuracy of the drill rod and ensure that the actual borehole diameter path coincides with the pre-marked area and the drilling effect. The first tilt support assembly 2 and the second tilt support assembly 3 provided in this application can cooperate to achieve tilt angle adjustment in multiple directions, thereby effectively improving the coverage of the adjustable correction of the base and effectively compensating for tilt deviations in multiple directions, thus expanding the applicability of tilt attitude adjustment. The first tilt support assembly 2 and the second tilt support assembly 3 provided in this application can enhance the stability of the installation plane after adjustment to a certain extent through a purely mechanical adjustment method. Compared with the existing hydraulic adjustment mechanism, the mechanical adjustment structure of this application can maintain the stability of the limit and the structural integrity under continuous shaking and vibration during drilling, thereby improving service life and positioning effect. The peripheral insertion limit assembly 4 provided in this application can be inserted into the formation to improve the stability of the connection between the base 1 and the ground when it is placed on the surface, making the placement position of the base 1 more stable, improving the impact resistance of the base 1 during drilling, and reducing the occurrence of adverse displacements such as slippage. The peripheral insertion limit assembly 4 can expand in the formation and effectively abut against the soil, so that it can be more firmly inserted into the formation.

[0020] Preferably, the base 1 has a central through-hole 11 at its center for inserting the drill bit downward into the formation. Preferably, the base 1 also has a plurality of peripheral insertion holes 12 for inserting peripheral insertion limiting components 4 arranged around the central through-hole 11.

[0021] Preferably, the first tilting support assembly 2 includes a U-shaped base plate 21, a U-shaped top plate 22, a rotating shaft 23, a translational support plate column 24, and a first tensioning limit rod 25. Preferably, the U-shaped base plate 21 is mounted on the base 1 by means of countersunk bolts or welding. Preferably, the U-shaped top plate 22 is connected to the U-shaped base plate 21 by means of the rotating shaft 23. More preferably, a translational support plate column 24 is slidably connected to the side of the U-shaped base plate 21 away from the rotating shaft 23, which can be adjusted to change the tilt angle of the U-shaped top plate 22 when it is supported by translating on its surface in a direction perpendicular to the axis of the rotating shaft 23. More preferably, a first tensioning limit rod 25 is rotatably provided on the bottom surface of the U-shaped top plate 22 away from the rotating shaft 23 in a manner that cooperates with the rotating shaft 23 and the translational support plate column 24 to limit the relative posture between the U-shaped base plate 21 and the U-shaped top plate 22 by means of tensioning and locking. The translational support column 24 provided in this application can be translated by the operator manually tightening the transverse threaded positioning rod 213 using tools such as wrenches, thereby changing the tilt angle of the U-shaped top plate 22. Then, the first tensioning limit rod 25 limits the maximum included angle between the U-shaped bottom plate 21 and the U-shaped top plate 22 by tightening the nut 251, so that the translational support column 24 and the first tensioning limit rod 25 can cooperate with each other to realize the adjustment of the included angle and the relative position limitation of the U-shaped bottom plate 21 and the U-shaped top plate 22.

[0022] Preferably, a lower connecting strip 211, which can be connected to the rotating shaft 23, is provided on the top surface of the U-shaped base plate 21. Preferably, an upper connecting strip 221, which is coplanar with the lower connecting strip 211 and connected to the rotating shaft 23, is also provided on the bottom surface of the U-shaped top plate 22. Preferably, a plurality of short-shaft rotating sleeves, coaxially fitted on the shaft of the rotating shaft 23, are alternately connected to the lower connecting strip 211 of the U-shaped base plate 21 and the upper connecting strip 221 of the U-shaped top plate 22, so that the U-shaped base plate 21 and the U-shaped top plate 22 can rotate relative to each other around the shaft axis of the rotating shaft 23, thereby changing the included angle between the two plates. More preferably, the two ends of the shaft of the rotating shaft 23 are integrally formed or otherwise provided with limiting heads, thereby limiting the rotatable fitting state of the short-shaft rotating sleeves. Preferably, an inclined sliding groove 212 for slidingly mounting and translating the support plate 24 is provided on the U-shaped base plate 21. Specifically, the inclined chute 212 has an inclined cavity bottom surface, and the bottom of the translation support plate column 24 is also set as a plate bottom surface that matches the inclined cavity bottom surface of the inclined chute 212, so that its actual height changes synchronously during the sliding process along the inclined chute 212, so that the U-shaped top plate 22 it supports deflects with the change of its top height.

[0023] Further preferably, a transverse threaded positioning rod 213, capable of defining the position of the translational support plate column 24 within the inclined slide groove 212, is threadedly inserted at the end of the inclined slide groove 212 away from the lower connecting strip 211. Preferably, the transverse threaded positioning rod 213 is rotatably connected to the translational support plate column 24 via a rotating connection structure such as a bearing sleeve. Preferably, a notch 214 is also provided on the U-shaped base plate 21, capable of rotatably engaging the first tensioning limit rod 25. Specifically, the opening of the notch 214 is located on the side of the U-shaped base plate 21 away from the lower connecting strip 211. Preferably, a rotating seat 222 is also provided on the bottom surface of the U-shaped top plate 22 by means of welding or countersunk screw insertion for positioning. Preferably, a rotating shaft 223 is transversely inserted into the lower slot of the rotating seat 222, and a rotating column 224 is rotatably mounted on the rotating shaft 223. Specifically, the end of the rotating column 224 away from the rotating seat 222 is connected to the first tensioning limit rod 25 by welding or other means. Preferably, the translational support plate column 24 includes a vertical plate body that is slidably fitted into the inclined slide groove 212, allowing it to slide back and forth along the slotting direction of the inclined slide groove 212. More preferably, the transverse threaded positioning rod 213 is rotatably connected to the side of the slide bar via a bearing body. Preferably, the top of the translational support plate column 24 is provided with an arc surface to ensure the effectiveness of contact support when the U-shaped top plate 22 deflects. Preferably, a tensioning nut 251 is also threaded onto the lower threaded rod body of the first tensioning limit rod 25.

[0024] Preferably, the second tilting support assembly 3 includes a first L-shaped plate 31, a second L-shaped plate 32, a sliding support body 33, and a second tensioning limit rod 34. Preferably, the first L-shaped plate 31 is installed on the U-shaped top plate 22 by welding or countersunk screws for limiting connection. More preferably, the first L-shaped plate 31 is rotatably connected to the second L-shaped plate 32 with a variable plate angle. Specifically, the vertical plates of the two are connected by a rotating connecting rod. Preferably, a sliding support body 33 capable of changing the tilt angle of the second L-shaped plate 32 is slidably supported on the first L-shaped plate 31. Preferably, a second tensioning limit rod 34 is rotatably provided on the bottom surface of the second L-shaped plate 32. Preferably, the strip-shaped sub-plate of the first L-shaped plate 31 is connected to the strip-shaped sub-plate of the second L-shaped plate 32 by a rotating connecting shaft, so that the first L-shaped plate 31 and the second L-shaped plate 32 can rotate relative to each other to change the included angle. Preferably, the connection between the strip-shaped sub-plate and the rotating connecting shaft is the same as and structurally similar to the connection between the lower connecting strip 211 and the upper connecting strip 221 and the rotating shaft 23. The second tilting support assembly 3 provided in this application can adjust the tilt angle of the second L-shaped plate 32 on another vertical plane perpendicular to the vertical plane where the first tilting support assembly 2 can tilt. Furthermore, the tilt adjustment and support limitation methods of the second L-shaped plate 32 are similar to those of the first tilting support assembly 2; the specific adjustment and limiting methods are the same for both, so they will not be described in detail further.

[0025] Preferably, the first L-shaped plate 31 and the second L-shaped plate 32 each have a first through-hole 311 and a second through-hole 321 at their center, respectively, capable of accommodating the drilling tool. Preferably, the opening cross-section of the first through-hole 311 is larger than that of the second through-hole 321. Preferably, an inclined rail groove is provided on the first L-shaped plate 31, allowing the sliding support 33 to slide and be engaged in the inclined rail groove, thus enabling it to slide along the groove direction. Preferably, a longitudinally threaded positioning rod capable of extending into the inclined rail groove and rotatably connected to the sliding support 33 is also longitudinally threaded onto the side of the first L-shaped plate 31. Preferably, a through slot for inserting a second tensioning limit rod 34 is also provided on the side of the first L-shaped plate 31 away from the longitudinally threaded positioning rod. More preferably, the through slot extends through the side of the first L-shaped plate 31. Preferably, the second L-shaped plate 32 is connected to the second tensioning and limiting rod 34 via a rotary connection structure similar to that of the rotating seat 222, the rotating shaft 223, and the rotating column 224. Preferably, the top of the sliding support 33 is provided with an arc-shaped end face. Preferably, a limiting nut is also threaded onto the lower threaded section of the second tensioning and limiting rod 34.

[0026] Preferably, the installation method of the drill bit on the horizontal plate of the second L-shaped plate 32 can be directly referred to the connection method of the mounting plate and the first electrode and the drill rod in the existing patent with publication number CN120083453A. This is the prior art. This application mainly improves the structure of the fixed seat that provides the mounting plane, and does not involve the optimization of the installation method of the drill bit on the mounting plane. Therefore, the installation of the drill bit directly uses the method disclosed in the above-mentioned existing patent documents for assembly.

[0027] Preferably, the base 41 of the peripheral insertion limiting assembly 4 is detachably mounted on the base 1 using countersunk screws. Preferably, a square insert cylinder 42 is fixedly connected to the bottom of the base 41 by welding or other means. More preferably, an expansion limiting plate 43 is rotatably connected to the bottom end of the square insert cylinder 42. Preferably, a lifting adjusting screw 44 is threadedly inserted into the center of the base 41. Preferably, the lower axial end of the lifting adjusting screw 44 inserted into the square insert cylinder 42 is rotatably connected to the directional square column 45 via a rotating connecting structure such as a bearing body. Preferably, the lower axial end of the directional square column 45 is also connected to an inner supporting quadrangular pyramid 46 that can limit the unfolding posture of the expansion limiting plate 43. Preferably, a strong magnetic adsorption block 431 is also embedded on the surface of the expansion limiting plate 43, so that the expansion limiting plate 43 always adheres to the surface of the directional square column 45 or the inner supporting quadrangular pyramid 46. Preferably, the cross-section of the directional square column 45 matches the cross-section of the cavity of the square insert column 42.

[0028] During assembly, the outer interlocking component 4 is first inserted into the ground around the drilled hole. Then, the surface soil in the area is compacted using earthwork compaction equipment to create a surface with reduced settlement and a certain degree of flatness. Next, the base 1 is positioned using a hoisting mechanism, and the seat 41 of the outer interlocking component 4 is fitted into the outer interlocking hole 12 with a stepped annular surface on the base 1. A threaded rod penetrating the base 1 and threaded into the seat 41 ensures the connection between the base 1 and the seat 41. The operator rotates the lifting adjustment screw 44 using a wrench or similar tool, causing it to rise. This moves the inner support pyramid 46 upwards, opening the expansion limiting plate 43 and increasing the compressive strength between the expansion limiting plate 43 and the ground, preventing the outer interlocking component 4 from being pulled out of the ground, and thus improving the relative positional stability of the base 1 and the ground.

[0029] For surface connections between components not explicitly specified in this application, conventional bolt connections, snap-fit ​​connections, or fixed connections such as welding can be used. As these are conventional connection methods, this application will not elaborate further on this part. Specifically, the connecting ends of the assembled components all form flange structures, and the two flange structures are connected by bolts, gaskets, or other structures.

[0030] This utility model is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this utility model. However, regardless of any changes in shape or structure, any technical solution falling within the scope of the claims of this utility model is within the protection scope of this utility model. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A fixed base for field drilling, comprising a base (1) mounted on the ground surface, characterized in that, A first tilt support assembly (2) capable of changing the lateral tilt angle is provided on the base (1), and a second tilt support assembly (3) capable of changing the longitudinal tilt angle is also provided on the top surface of the first tilt support assembly (2) away from the base (1). The first tilt support assembly (2) is stacked and arranged in such a way that it and the second tilt support assembly (3) can be tilted on two vertical planes that are perpendicular to each other. On the base (1), a number of peripheral insertion components (4) that can be inserted into the stratum are detachably installed in a circumferentially spaced manner, so that the peripheral insertion components (4) limit the placement position of the base (1) in an adjustable internal support expansion limiting manner.

2. The field drilling mount of claim 1, wherein, The first tilting support assembly (2) includes a U-shaped base plate (21), a U-shaped top plate (22), a rotating shaft (23), a translational support column (24), and a first tensioning limit rod (25), wherein, The U-shaped base plate (21) is mounted on the base (1), and a U-shaped top plate (22) is connected to the U-shaped base plate (21) via a rotating shaft (23). The U-shaped base plate (21) is slidably connected to a translational support column (24) on the side away from the rotation axis (23). A first tensioning limit rod (25) is rotatably provided on the bottom surface of the U-shaped top plate (22) away from the rotating shaft (23).

3. The field drilling mount of claim 2, wherein, A lower connecting strip (211) that can be connected to the rotating shaft (23) is provided on the top surface of the U-shaped base plate (21). An upper connecting strip (221) is also provided on the bottom surface of the U-shaped top plate (22), which is coplanar with the lower connecting strip (211) and connected to the rotating shaft (23).

4. The field drilling mount of claim 3, wherein, An inclined groove (212) is provided on the U-shaped base plate (21) for slidingly mounting the translation support plate column (24), and a transverse threaded positioning rod (213) is threadedly inserted at the end of the inclined groove (212) away from the lower connecting strip plate (211) to limit the position of the translation support plate column (24) in the inclined groove (212). The U-shaped base plate (21) is also provided with a notch (214) that can be rotated and inserted into the first tensioning limit rod (25).

5. The field drilling mount of claim 4, wherein, A tensioning nut (251) is also threaded onto the lower section of the threaded rod of the first tensioning limit rod (25).

6. The field drilling mount of claim 5, wherein, The second tilt support assembly (3) includes a first L-shaped plate (31), a second L-shaped plate (32), a sliding support (33), and a second tensioning limit rod (34), wherein, The first L-shaped plate (31) is mounted on the U-shaped top plate (22), and the first L-shaped plate (31) is rotatably connected to the second L-shaped plate (32); A sliding support (33) capable of changing the tilt angle of the second L-shaped plate (32) is slidably supported on the first L-shaped plate (31). A second tensioning limit rod (34) is rotatably provided on the bottom surface of the second L-shaped plate (32).

7. The field drilling mount of claim 6, wherein, The first L-shaped plate (31) and the second L-shaped plate (32) are respectively provided with a first through-hole (311) and a second through-hole (321) that can accommodate the drill bit.

8. The field drilling mount of claim 7, wherein, The seat (41) of the peripheral insertion component (4) is detachably mounted on the base (1), and a square insertion cylinder (42) is connected to the bottom of the seat (41), and an expansion limiting plate (43) is rotatably connected to the bottom end of the cylinder of the square insertion cylinder (42). A lifting adjustment screw (44) is threadedly inserted into the center of the base (41), and the lower axial end of the lifting adjustment screw (44) inserted into the square insert cylinder (42) is rotatably connected to the directional square column (45). The lower axial end of the directional column (45) is also connected to an inner support quadrangular pyramid (46) that can limit the unfolding posture of the expansion limiting plate (43).

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