Tunnel drill bit posture correction device

Abstract

The present invention discloses a tunnel drill bit posture correction device. The device comprises a drill bit posture adjustment structure coaxially mounted on a drill rod, the drill bit posture adjustment structure comprises a central rotation mechanism and a hydraulic rod rotation mechanism; the central rotation mechanism is coaxially fixedly sleeved on the drill rod, the hydraulic rod rotation mechanism is connected to the periphery of the central rotation mechanism through a pin shaft, and the hydraulic rod rotation mechanism is provided with a hydraulic cylinder. The drill bit posture correction device of the present invention has a simple structure and high reliability, and can solve the problem that the drill bit is stuck in a tunnel and is difficult to withdraw normally.

Description

Technical Field

[0001] The invention relates to a drill bit structure in the field of slope inclined shaft construction projects, and in particular to a tunnel drill bit posture correction device. Background Art

[0002] In many fields such as railways, tunnels and pumped storage, the working depth is large and large-diameter drill bits are often used. After drilling, the drill bit needs to be cleaned out of the working surface. The common method is to pull it up or lower it to the removal surface through the drill rod. However, in the process of pulling up or lowering, due to the uncertainty of the path of the drill bit under the traction of the long flexible drill rod and the unevenness of the tunnel surface, it is very easy for the drill bit to be stuck in the tunnel and unable to move. This brings great difficulties to the removal of the drill bit. It is difficult and very dangerous to manually adjust the drill bit posture in the tunnel. Summary of the invention

[0003] In order to solve the problem that the drill bit is stuck in the tunnel and is difficult to remove, the present invention provides a device suitable for correcting the posture of the tunnel drill bit, which can replace manual processing of the drill bit stuck in the tunnel, reduce safety hazards, and improve the efficiency of removing the drill bit. The present invention has the advantages of simple structure, high reliability, safety and high efficiency, and can solve the problem that the drill bit is stuck in the tunnel and is difficult to remove normally.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention comprises a drill bit posture adjustment structure coaxially mounted on a drill rod, the drill bit posture adjustment structure comprises a central rotation mechanism and a hydraulic rod rotation mechanism; the central rotation mechanism is coaxially fixedly sleeved on the drill rod, the hydraulic rod rotation mechanism is connected to the periphery of the central rotation mechanism through a pin shaft, and the hydraulic rod rotation mechanism is provided with a hydraulic cylinder.

[0006] The central rotating mechanism comprises a central rotating member, a rotating drive motor, a driving gear, an upper cover and a lower cover. The upper cover and the lower cover are coaxially fixedly sleeved on the drill pipe. The central rotating member is located between the upper cover and the lower cover. The upper end and the lower end of the central rotating member are rollingly connected to the upper cover and the lower cover through an upper bearing and a lower bearing respectively.

[0007] A plurality of rotary drive motors are fixedly mounted on the upper cover along the circumference, an outer gear ring is arranged around the outer periphery of the central rotating member, the output shaft of each rotary drive motor is synchronously connected with a driving gear, and each driving gear is meshed with the outer gear ring.

[0008] The upper cover and the lower cover are fixedly connected to the drill rod in a tight-fitting manner.

[0009] A tightening nut is provided at the bottom end of the lower cover. The tightening nut has an internal thread and is threadedly mounted on the drill rod. The axial positioning of the bearing can be further ensured by rotating the tightening nut.

[0010] A plurality of connection blocks are fixedly arranged on the outer periphery of the central rotating member, and each connection block is provided with a hydraulic rod rotating mechanism.

[0011] The device also includes a plurality of hydraulic rod rotating mechanisms, and the plurality of hydraulic rod rotating mechanisms are evenly spaced along the circumference.

[0012] The hydraulic rod rotation mechanism is mainly composed of a hydraulic rod rotation active part, a rotation buffer plate, a hydraulic cylinder guide base, a rotation buffer spring and a cylinder barrel; the hydraulic rod rotation active part is installed in the card slot of the connecting block of the central rotating part, and the rotating output ends of the two ends of the rotating shaft driving assembly extending out of the hydraulic rod rotation active part are connected to the two ends of the hydraulic cylinder guide base, the outer peripheral surface of the hydraulic rod rotation active part is an arc surface, and the axial direction of the hydraulic cylinder guide base is arranged radially along the outer peripheral surface of the hydraulic rod rotation active part, and an axial guide groove is machined in the hydraulic cylinder guide base, and a cylinder barrel is installed in the guide groove, and one end of the cylinder barrel close to the hydraulic rod rotation active part extends out of the guide groove and is fixedly connected through the buffer spring and one end of the hydraulic rod rotation buffer plate, and the other end of the hydraulic rod rotation buffer plate contacts and is connected to the outer peripheral surface of the hydraulic rod rotation active part.

[0013] The outer peripheral surface of the hydraulic rod rotating active member is a convex arc surface, and the surface of the other end of the hydraulic rod rotating buffer plate contacting the outer peripheral surface of the hydraulic rod rotating active member is a concave arc surface.

[0014] The outer port of the guide slot of the hydraulic cylinder guide base is provided with a hydraulic cylinder rotation fixing piece, and the cylinder barrel is limited in the hydraulic cylinder guide base through the hydraulic cylinder rotation fixing piece.

[0015] The hydraulic rod rotating active component is mainly composed of a housing, a driving output shaft, a driving motor, a second driving gear, and a second driven gear. The driving output shaft is rotatably supported and installed on the housing, and the two ends of the driving output shaft extend out of the housing and are fixedly connected to the two ends of the hydraulic cylinder guide base. The driving motor is fixedly placed in the housing, and the output shaft of the driving motor is coaxially fixedly connected to the second driving gear. The second driving gear is meshed with the second driven gear, and the second driven gear is coaxially fixedly sleeved on the middle part of the driving output shaft.

[0016] The present invention adopts an active motor to control the support angle of the hydraulic cylinder. At the same time, the hydraulic cylinder of the hydraulic rod rotating mechanism can realize the control of the resultant force and direction of the driving force when independently controlled, so that the posture of the drill bit in the tunnel can be controlled, the efficiency of the drill bit getting out of trouble is improved, the problem of safety hazards during manual operation is solved, and the economic losses and construction difficulties caused by drill sticking are avoided.

[0017] The present invention adopts a rotating device, which can adjust the support position of the hydraulic cylinder when the drill bit is fixed, and can be used to rotate the drill bit when the hydraulic cylinder is working, so as to achieve fine adjustment of the drill bit in the circumferential direction.

[0018] The hydraulic rod rotating mechanism of the present invention is connected to the central rotating member of the rotating device through a pin shaft, and has the function of rotating and extending around the pin shaft. The purpose of correcting the drill bit posture in the tunnel can be achieved through the coordinated action of multiple groups of hydraulic rod rotating mechanisms.

[0019] The beneficial effects of the present invention are:

[0020] The present invention adds a posture adjustment device to the drill bit, which can greatly improve the removal efficiency of the drill bit, avoid the economic benefit loss caused by drill sticking and the low efficiency and potential safety hazards caused by manual posture adjustment.

[0021] The central rotating mechanism of the drill bit posture adjustment structure of the present invention can adjust the position of the hydraulic rod rotation mechanism when the drill bit is fixed. When the hydraulic rod hydraulic cylinder is extended and supported on the tunnel wall, the micro-rotation adjustment of the drill bit can be achieved, which has multiple effects.

[0022] The present invention can drive the hydraulic cylinder guide base to control the support angle of the hydraulic cylinder by controlling the rotation angle of the active motor in the hydraulic rod driving device. At the same time, the hydraulic cylinder of the hydraulic rod rotating mechanism can be controlled independently. The posture of the drill bit is adjusted by comprehensively controlling the size and direction of the driving force, so that the drill bit can be freed and adjusted to a suitable lowering posture. It has the advantages of multi-degree-of-freedom adjustment and controllable driving force.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0025] Figure 1 The figure is a schematic diagram showing the working state of a device for correcting the posture of a tunnel drill bit according to an exemplary embodiment.

[0026] Figure 2 It is a bottom schematic diagram of a working state of a device for correcting the posture of a tunnel drill bit according to an exemplary embodiment.

[0027] Figure 3 The figure is a schematic diagram of a tunnel drill bit posture correction device in a non-working state according to an exemplary embodiment.

[0028] Figure 4 is a schematic diagram of a tunnel drill bit according to an exemplary embodiment.

[0029] Figure 5 It is a schematic diagram of the correction device structure.

[0030] Figure 6 It is a schematic diagram of the structure of the central rotating mechanism, wherein (a) is a half-section view of the central rotating mechanism, (b) is a schematic diagram of the overall structural layout of the central rotating structure, and (c) is a top view of the central rotating mechanism.

[0031] Figure 7 It is a schematic diagram of the upper cover structure of the central rotating part.

[0032] Figure 8 It is a schematic diagram of the lower cover structure of the central rotating part.

[0033] Fig. 9 It is a schematic diagram of the structure of the hydraulic rod rotation mechanism.

[0034] Fig.10 It is a schematic diagram of the structure of the hydraulic rod rotating active parts.

[0035] Fig.11 This is the internal structure diagram of the hydraulic rod rotating active component.

[0036] Fig.12 It is a schematic diagram of the structure of the hydraulic rod rotation mechanism buffer and hydraulic cylinder assembly.

[0037] Fig.13 It is a schematic diagram of the structure of the hydraulic cylinder guide base.

[0038] Fig.14 It is a schematic diagram of the installation of the buffer plate and the hydraulic rod rotating active parts.

[0039] The markings in the figure are:

[0040] 1-drill bit posture adjustment structure; 1-1 center rotation mechanism; 1-1-1 upper cover; 1-1-2 upper bearing; 1-1-3 lower bearing; 1-1-4 rotation drive motor; 1-1-5 driving gear; 1-1-6 center rotation part; 1-1-7 lower cover; 1-1-8 bottom fixing part;

[0041] 1-2 hydraulic rod rotating mechanism; 1-2-1 hydraulic rod rotating active part; 1-2-1-1 housing; 1-2-1-2 driving output shaft; 1-2-1-3 active motor; 1-2-1-4 active gear 2; 1-2-1-5 driven gear 2; 1-2-1-6 radial bearing 1; 1-2-1-7 radial bearing 2;

[0042] Drive output shaft fixing part 1-2-2; 1-2-3 rotating buffer plate; 1-2-4 hydraulic cylinder guide base; 1-2-5 rotating buffer spring; 1-2-6 cylinder barrel; 1-2-7 piston; 1-2-8 rotating fixing part;

[0043] 2- Drill bit;

[0044] 3- Drill rod. DETAILED DESCRIPTION

[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations.

[0046] like Figure 1-Figure 3 As shown, the drill head posture adjustment structure 1 is coaxially mounted on a drill rod 3, and a drill head 2 for tunnel excavation is also mounted on the drill rod 3. Figure 4 shown.

[0047] like Figure 5 As shown, the drill bit posture adjustment structure 1 includes a central rotating mechanism 1-1 and a hydraulic rod rotating mechanism 1-2; the central rotating mechanism 1-1 is coaxially fixedly sleeved on the drill rod 3 through an upper cover 1-1-1 and a lower cover 1-1-7, the hydraulic rod rotating mechanism 1-2 is connected to the periphery of the central rotating member 1-1-6 of the central rotating mechanism 1-1 through a pin shaft, and the hydraulic rod rotating mechanism 1-2 is provided with a hydraulic cylinder. The drill rod 3 and the hydraulic rod rotating mechanism 1-2 are driven to rotate by the central rotating mechanism 1-1, and the hydraulic rod rotating mechanism 1-2 drives the hydraulic cylinder to extend and retract so that the drill bit posture adjustment structure 1 is supported in the inner wall of the tunnel.

[0048] like Figure 6-Figure 8 As shown, the central rotating mechanism includes a central rotating member 1-1-6, a rotating driving motor 1-1-4, a driving gear 1-1-5, an upper cover 1-1-1 and a lower cover 1-1-7. The upper cover 1-1-1 and the lower cover 1-1-7 are coaxially fixedly mounted on the drill pipe 3. The upper cover 1-1-1 and the lower cover 1-1-7 are arranged at intervals up and down, respectively. Figure 7 and Figure 8 As shown, the central rotating member 1-1-6 is located between the upper cover 1-1-1 and the lower cover 1-1-7, the central rotating member 1-1-6 is coaxial with the upper cover 1-1-1 and the lower cover 1-1-7, the upper end and the lower end of the central rotating member 1-1-6 are rollingly connected to the upper cover 1-1-1 and the lower cover 1-1-7 through the upper bearing 1-1-2 and the lower bearing 1-1-3 respectively, so that the central rotating member 1-1-6 is rollingly connected between the upper cover 1-1-1 and the lower cover 1-1-7, and the central rotating member 1-1-6 can rotate relative to the upper cover 1-1-1 and the lower cover 1-1-7;

[0049] like Figure 6As shown, a plurality of rotary drive motors 1-1-4 are fixedly mounted along the circumference of the upper cover 1-1-1, an outer gear ring is arranged around the outer periphery of the central rotating member 1-1-6, the output shaft of each rotary drive motor 1-1-4 is synchronously connected to a driving gear 1-1-5, and each driving gear 1-1-5 is meshed with the outer gear ring. The rotary drive motor 1-1-4 drives the driving gear 1-1-5 to cause the central rotating member 1-1-6 to rotate relative to the upper cover 1-1-1 and the lower cover 1-1-7.

[0050] The upper cover 1-1-1 and the lower cover 1-1-7 are fixedly connected to the drill pipe 3 by a tight fit.

[0051] A tightening nut 1-1-8 is provided at the bottom end of the lower cover 1-1-7. The tightening nut 1-1-8 has an internal thread and is installed on the drill pipe. The axial positioning of the bearings 1-1-2 and 1-1-3 can be further ensured by rotating the tightening nut.

[0052] A plurality of connection blocks are fixedly provided on the outer periphery of the central rotating member 1-1-6, each connection block has a groove, and each connection block is provided with a hydraulic rod rotating mechanism 1-2.

[0053] It comprises a plurality of hydraulic rod rotating mechanisms 1-2, and the plurality of hydraulic rod rotating mechanisms 1-2 are evenly spaced along the circumference.

[0054] like Fig. 9 As shown, the hydraulic rod rotating mechanism 1-2 is mainly composed of a hydraulic rod rotating active member 1-2-1, a rotating buffer plate 1-2-3, a hydraulic cylinder guide base 1-2-4, a rotating buffer spring 1-2-5 and a cylinder 1-2-6; the hydraulic rod rotating active member 1-2-1 is installed in a slot provided in a connecting block of the central rotating member 1-1-6, and the rotating output ends of the rotating shaft driving assembly extending from both ends of the hydraulic rod rotating active member 1-2-1 are connected to both ends of the hydraulic cylinder guide base 1-2-4, and the hydraulic cylinder guide base 1-2-4 is as shown in FIG. Fig.13 As shown, it is U-shaped. The outer peripheral surface of the hydraulic rod rotating active member 1-2-1 is an arc surface, and the axial direction of the hydraulic cylinder guide base 1-2-4 is arranged along the radial direction of the outer peripheral surface of the hydraulic rod rotating active member 1-2-1, as shown in FIG. Fig.14As shown, the hydraulic cylinder guide base 1-2-4 is machined with an axial guide groove, and the guide groove is equipped with a cylinder barrel 1-2-6. The cylinder barrel 1-2-6 is assembled in the guide groove opened on the hydraulic cylinder guide base 1-2-4 through a guide structure. One end of the cylinder barrel 1-2-6 close to the hydraulic rod rotating active part 1-2-1 extends out of the guide groove and is fixedly connected through a buffer spring 1-2-5 and one end of the hydraulic rod rotating buffer plate 1-2-3. Under the action of the buffer spring 1-2-5, the cylinder barrel 1-2-6 can move axially in the hydraulic cylinder guide base 1-2-4, and the other end of the hydraulic rod rotating buffer plate 1-2-3 is in contact with and connected to the outer peripheral surface of the hydraulic rod rotating active part 1-2-1. The hydraulic rod rotating buffer plate 1-2-3 is also pressed against the arc surface of the hydraulic rod rotating active part 1-2-1 by the buffer spring 1-2-5; the piston 1-2-7 of the hydraulic rod rotating active part 1-2-1 is arranged outward and can be extended and retracted.

[0055] The outer peripheral surface of the hydraulic rod rotating active component 1-2-1 is a convex arc surface, and the surface of the other end of the hydraulic rod rotating buffer plate 1-2-3 contacting the outer peripheral surface of the hydraulic rod rotating active component 1-2-1 is a concave arc surface, so that the other end of the hydraulic rod rotating buffer plate 1-2-3 and the outer peripheral surface of the hydraulic rod rotating active component 1-2-1 form an arc fit.

[0056] The outer port of the guide slot of the hydraulic cylinder guide base 1-2-4 is provided with a hydraulic cylinder rotation fixing part 1-2-8, and the cylinder barrel 1-2-6 is limited in the hydraulic cylinder guide base 1-2-4 by the hydraulic cylinder rotation fixing part 1-2-8. Specifically, the hydraulic cylinder rotation fixing part 1-2-8 has a through hole, the diameter of the inner cylinder body of the cylinder barrel 1-2-6 is larger than the diameter of the through hole, the diameter of the outer cylinder body of the cylinder barrel 1-2-6 is larger than the diameter of the through hole, the outer cylinder body of the cylinder barrel 1-2-6 passes through the through hole, and the step between the outer cylinder body and the inner cylinder body of the cylinder barrel 1-2-6 is axially limited by the hydraulic cylinder rotation fixing part 1-2-8.

[0057] like Figure 10-12 As shown, the hydraulic rod rotating active member 1-2-1 is mainly composed of a housing 1-2-1-1, a driving output shaft 1-2-1-2, an active motor 1-2-1-3, a driving gear 1-2-1-4, and a driven gear 1-2-1-5; the housing 1-2-1-1 is as shown Fig.14As shown, both ends of the driving output shaft 1-2-1-2 are rotatably supported and installed on the housing 1-2-1-1 through radial bearing 1 1-2-1-6 and radial bearing 2 1-2-1-7, and the driving output shaft 1-2-1-2 is arranged perpendicular to the drill pipe 3. Both ends of the driving output shaft 1-2-1-2 extend out of the housing 1-2-1-1 and are fixedly connected to both ends of the hydraulic cylinder guide base 1-2-4. The driving motor 1-2-1-3 is fixedly placed in the housing 1-2-1-1, and the output shaft of the driving motor 1-2-1-3 is coaxially fixedly connected with the driving gear 2 1-2-1-4. The driving gear 2 1-2-1-4 is meshed with the driven gear 2 1-2-1-5, and the driven gear 2 1-2-1-5 is coaxially fixedly sleeved on the middle part of the driving output shaft 1-2-1-2. The active motor 1-2-1-3 drives the active gear 1-2-1-4 to drive the driven gear 1-2-1-5 to realize the rotation of the drive output shaft 1-2-1-2, and then drives the hydraulic cylinder guide base 1-2-4 to rotate around the drive output shaft 1-2-1-2.

[0058] After the two ends of the driving output shaft 1-2-1-2 are respectively mounted on the two ends of the hydraulic cylinder guide base 1-2-4, driving output shaft fixing parts 1-2-2 are provided to limit the axial position of the ends of the hydraulic cylinder guide base 1-2-4. The driving output shaft fixing parts 1-2-2 are usually a retaining spring structure.

[0059] The working process of the present invention is specifically as follows:

[0060] like Figure 3 As shown, when not in operation, the correction device of the present invention is in a retracted compact state, which does not affect the normal lowering of the drill bit.

[0061] When the drill bit is stuck in the tunnel, under the joint action of the central rotating mechanism 1-1 and the hydraulic rod rotating mechanism 1-2, the working state is:

[0062] First, the central rotating mechanism 1-1, under the action of the rotating drive motor 1-1-4, makes the central rotating part 1-1-6 drive the hydraulic rod rotating mechanism 1-2 to slightly rotate, and adjusts the circumferential position of the piston 1-2-7 of the cylinder 1-2-6 of each hydraulic rod rotating mechanism 1-2. Then, the active motor 1-2-1-3 of each hydraulic rod rotating mechanism 1-2 drives the hydraulic rod rotating mechanism 1-2 to unfold, and the piston rod 1-2-7 of the cylinder 1-2-6 extends out and supports on the tunnel wall. The posture of the drill bit can be adjusted by the pressure and displacement of each piston rod 1-2-7. One of the working states is as follows: Figure 1 , Figure 2 shown.

[0063] When each piston rod 1-2-7 is supported on the tunnel wall, the upper cover 1-1-1 and the lower cover 1-1-7 can drive the drill bit to rotate slightly through the drill rod by driving the rotary drive motor 1-1-4 in the central rotating mechanism 1-1, thereby realizing the posture adjustment of the drill bit in the tunnel.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that improvements and refinements can be made without departing from the working principle of the present invention. These improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A tunnel drill bit posture correction device, characterized in that: The drill bit posture adjustment structure (1) comprises a drill bit posture adjustment structure (1) coaxially mounted on a drill rod (3), the drill bit posture adjustment structure (1) comprising a central rotation mechanism (1-1) and a hydraulic rod rotation mechanism (1-2); the central rotation mechanism (1-1) is coaxially fixedly sleeved on the drill rod (3), the hydraulic rod rotation mechanism (1-2) is connected to the periphery of the central rotation mechanism (1-1) via a pin shaft, and the hydraulic rod rotation mechanism (1-2) is provided with a hydraulic cylinder; The central rotating mechanism comprises a central rotating member (1-1-6), a rotating drive motor (1-1-4), a driving gear (1-1-5), an upper cover (1-1-1) and a lower cover (1-1-7); the upper cover (1-1-1) and the lower cover (1-1-7) are coaxially fixedly sleeved on the drill pipe (3); the central rotating member (1-1-6) is located between the upper cover (1-1-1) and the lower cover (1-1-7); the upper end and the lower end of the central rotating member (1-1-6) are rollingly connected to the upper cover (1-1-1) and the lower cover (1-1-7) via an upper bearing (1-1-2) and a lower bearing (1-1-3), respectively; A plurality of rotary drive motors (1-1-4) are fixedly mounted along the circumference of the upper cover (1-1-1), an outer gear ring is arranged around the outer periphery of the central rotating member (1-1-6), the output shaft of each rotary drive motor (1-1-4) is synchronously connected to a driving gear (1-1-5), and each driving gear (1-1-5) is meshed with the outer gear ring; The hydraulic rod rotating mechanism (1-2) is mainly composed of a hydraulic rod rotating active member (1-2-1), a rotating buffer plate (1-2-3), a hydraulic cylinder guide base (1-2-4), a rotating buffer spring (1-2-5) and a cylinder (1-2-6); the hydraulic rod rotating active member (1-2-1) is installed in a slot of a connecting block of a central rotating member (1-1-6); the rotating output ends of the two ends of the rotating shaft driving assembly extending out of the hydraulic rod rotating active member (1-2-1) are connected to the two ends of the hydraulic cylinder guide base (1-2-4); the outer peripheral surface of the hydraulic rod rotating active member (1-2-1) is an arc The hydraulic cylinder guide base (1-2-4) is arranged axially along the radial direction of the outer peripheral surface of the hydraulic rod rotating active member (1-2-1); the hydraulic cylinder guide base (1-2-4) is processed with an axial guide groove; a cylinder barrel (1-2-6) is installed in the guide groove; one end of the cylinder barrel (1-2-6) close to the hydraulic rod rotating active member (1-2-1) extends out of the guide groove and is fixedly connected via a buffer spring (1-2-5) and one end of the hydraulic rod rotating buffer plate (1-2-3); the other end of the hydraulic rod rotating buffer plate (1-2-3) contacts and is connected to the outer peripheral surface of the hydraulic rod rotating active member (1-2-1); The hydraulic rod rotating active member (1-2-1) is mainly composed of a housing (1-2-1-1), a driving output shaft (1-2-1-2), a driving motor (1-2-1-3), a second driving gear (1-2-1-4), and a second driven gear (1-2-1-5); the driving output shaft (1-2-1-2) is rotatably supported and mounted on the housing (1-2-1-1), and the two ends of the driving output shaft (1-2-1-2) extend out of the housing (1-2-1-1) and The two ends of the hydraulic cylinder guide base (1-2-4) are fixedly connected, the driving motor (1-2-1-3) is fixedly placed in the housing (1-2-1-1), the output shaft of the driving motor (1-2-1-3) and the second driving gear (1-2-1-4) are coaxially fixedly connected, the second driving gear (1-2-1-4) and the second driven gear (1-2-1-5) are meshed, and the second driven gear (1-2-1-5) is coaxially fixedly sleeved on the middle part of the driving output shaft (1-2-1-2).

2. The drill bit posture correction device according to claim 1, characterized in that: The upper cover (1-1-1) and the lower cover (1-1-7) are fixedly connected to the drill rod (3) in a tight-fitting manner.

3. The drill bit posture correction device according to claim 1, characterized in that: The bottom end of the lower cover (1-1-7) is provided with a tightening nut (1-1-8), and is threadably mounted on the drill rod via the tightening nut (1-1-8).

4. The drill bit posture correction device according to claim 1, characterized in that: A plurality of connection blocks are fixedly provided on the outer circumference of the central rotating member (1-1-6), and each connection block is provided with a hydraulic rod rotating mechanism (1-2).

5. The drill bit posture correction device according to claim 1, characterized in that: It comprises a plurality of hydraulic rod rotating mechanisms (1-2), wherein the plurality of hydraulic rod rotating mechanisms (1-2) are evenly spaced along the circumference.

6. The drill bit posture correction device according to claim 1, characterized in that: The outer peripheral surface of the hydraulic rod rotating active component (1-2-1) is a convex arc surface, and the surface of the other end of the hydraulic rod rotating buffer plate (1-2-3) contacting the outer peripheral surface of the hydraulic rod rotating active component (1-2-1) is a concave arc surface.

7. The drill bit posture correction device according to claim 1, characterized in that: The outer port of the guide slot of the hydraulic cylinder guide base (1-2-4) is provided with a hydraulic cylinder rotation fixing piece (1-2-8), and the cylinder barrel (1-2-6) is limited in the hydraulic cylinder guide base (1-2-4) by the hydraulic cylinder rotation fixing piece (1-2-8).

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