Guide screw drilling tool

Abstract

The utility model provides a guiding screw drill which comprises a drill body, a transmission shaft section, a universal shaft section, a motor section, a bypass valve section and a guiding drill bit, the motor section and the bypass valve section are in lap joint through a connecting rod, threads are arranged at the end, close to the bypass valve section, of a screw, and the connecting rod is in threaded connection with an anti-falling assembly preventing the bypass valve section from being separated from the motor section. The anti-falling assembly comprises an anti-falling screw sleeve in threaded connection with the screw rod and a plurality of sliding rods arranged on the anti-falling screw sleeve in a sliding mode, the anti-falling screw sleeve is provided with a plurality of sliding grooves used for sliding of the sliding rods, the sliding rods are fixedly connected with limiting plates, and the connecting rods are provided with limiting grooves matched with the limiting plates in size and used for further fixing the anti-falling screw sleeve and the connecting rods. According to the guide screw drilling tool, the fixing strength between the connecting rod and the anti-falling thread sleeve can be improved through matching between the limiting plate and the limiting groove, and the problem that the connecting rod and the anti-falling thread sleeve which are in threaded connection possibly loosen and even fall off along with vibration is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw drill tools, in particular to a guide screw drill tool. Background Art

[0002] Guide screw drilling tools are precision tools widely used in oil and gas extraction, building foundation piling, geological surveys, and engineering practices that require extremely high drilling accuracy. The core design concept of this type of drilling tool is to ensure the directionality and precise positioning of the hole during drilling, which is particularly important when drilling inclined holes, horizontal holes, and wells with large curvature. By using guide drilling tools, the operator can effectively control the path of the drill bit to ensure that it follows the established drilling trajectory. This not only prevents the drill bit from deviating from the preset target area, but also reduces any potential deviations, improving the accuracy and efficiency of drilling. In complex formation conditions or situations where there are strict requirements on the drilling location, the role of guide screw drilling tools is particularly prominent. Through a precise navigation system, it helps the drill bit to accurately travel deep underground, providing technical guarantees for the success of various drilling operations.

[0003] Since the working environment of the guide screw drill is often very special, it is necessary to set up an anti-drop device to prevent the drill from accidentally falling off or slipping out of the borehole during the drilling process. The current anti-drop means is often to thread a limit block with a diameter larger than the drop hole diameter on the connecting rod. However, since the guide screw drill often vibrates greatly during operation, the threaded connection may become loose or even fall off due to long-term vibration, which poses certain risks.

[0004] In view of this, a guide screw drilling tool is proposed. Utility Model Content

[0005] The utility model aims to solve the problem that a threaded anti-drop device may become loose or even loose due to vibration, and provides a guide screw drilling tool.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a guide screw drill, comprising a drill body, a transmission shaft section, a universal shaft section, a motor section, a bypass valve section and a guide drill bit, the motor section and the bypass valve section are overlapped by a connecting rod, a thread is provided at one end of the screw near the bypass valve section, an anti-drop component is threadedly connected to the connecting rod to prevent the bypass valve section from detaching from the motor section, the anti-drop component comprises an anti-drop screw sleeve threadedly connected to the screw and a plurality of sliding rods slidably arranged on the anti-drop screw sleeve, a plurality of sliding grooves for the sliding rods to slide are provided on the anti-drop screw sleeve, a limiting plate is fixedly connected to the sliding rod, and a limiting groove matching the size of the limiting plate is provided on the connecting rod for further fixing the anti-drop screw sleeve and the connecting rod.

[0007] Furthermore, four sliding rods are arranged at equal intervals on the anti-drop screw sleeve, wherein two spaced sliding rods are fixedly connected to the first rack at one end away from the connecting rod, and the other two spaced sliding rods are fixedly connected to the second rack at one end away from the connecting rod, the first rack and the second rack are meshed with a gear together, a rotating rod is fixedly connected to the gear, and the rotating rod is rotatably installed on the anti-drop screw sleeve.

[0008] Furthermore, the first rack and the second rack are staggered in height direction.

[0009] Furthermore, a cover plate is fixedly connected to the anti-drop screw sleeve, a rotating drum is rotatably connected to the cover plate, the rotating drum is fixedly connected to the rotating rod, a pull rod is slidably provided on the rotating drum, and the pull rod and the inner wall surface of the rotating drum are elastically connected by a spring.

[0010] Furthermore, a cross bar is fixedly connected to the pull rod, an end of the cross bar away from the pull rod is fixedly connected to an insertion rod, and the cover plate is provided with two locking holes with sizes matching the insertion rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the guide screw drill provided by the utility model can improve the fixing strength between the connecting rod and the anti-drop screw sleeve through the cooperation between the limit plate and the limit groove, thereby solving the problem that the threaded connecting rod and the anti-drop screw sleeve may loosen or even fall off due to vibration, and improving the service life of the guide screw drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model.

[0014] Figure 2 This is a positional relationship diagram of a bypass valve and an anti-drop assembly according to an embodiment of the utility model.

[0015] Figure 3 The figure is a schematic diagram of the connection relationship between the connecting rod and the anti-dropping screw sleeve according to one embodiment of the utility model.

[0016] Figure 4 This is a schematic diagram of an explosion of a pull rod according to an embodiment of the utility model.

[0017] Figure 5 The figure is a schematic diagram of the positional relationship between the first rack, the second rack and the gear of one embodiment of the utility model.

[0018] In the figure:

[0019] 1. drilling tool body, 11. transmission shaft section, 12. universal shaft section, 13. motor section, 131. connecting rod, 1311. thread, 1312. limiting groove, 14. bypass valve section, 15. guide drill bit;

[0020] 2. Anti-drop assembly, 21. Anti-drop screw sleeve, 212. Cover plate, 22. Slide rod, 221. Limit plate, 222. First rack, 223. Second rack, 224. Slide groove, 23. Rotating rod, 231. Gear, 232. Rotating drum, 233. Spring, 234. Pull rod, 235. Cross bar, 236. Insert rod, 24. Locking hole. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 .

[0023] The utility model guide screw drilling tool comprises a drilling tool body 1, a transmission shaft section 11, a universal shaft section 12, a motor section 13, a bypass valve section 14 and a guide drill bit 15, the motor section 13 and the bypass valve section 14 are overlapped by a connecting rod 131, a thread 1311 is arranged at one end of the screw near the bypass valve section 14, the thread 1311 on the connecting rod 131 is connected with an anti-drop component 2 for preventing the bypass valve section 14 from being separated from the motor section 13, the anti-drop component 2 comprises an anti-drop screw sleeve 21 connected with the screw thread 1311 and a plurality of slide rods 22 slidably arranged on the anti-drop screw sleeve 21, a plurality of slide grooves 224 for sliding the slide rod 22 are provided on the anti-drop screw sleeve 21, a limiting plate 221 is fixedly connected to the slide rod 22, and a limiting groove 1312 matching the size of the limiting plate 221 for further fixing the anti-drop screw sleeve 21 and the connecting rod 131 is provided on the connecting rod 131.

[0024] It should be noted that if Figure 3 As shown, the limit groove 1312 is an annular groove whose size is adapted to the limit plate 221. That is to say, when multiple slide rods 22 approach each other along the slide groove 224, the limit plate 221 moves toward the limit groove 1312 until the limit plate 221 is located in the limit groove 1312. The anti-drop screw sleeve 21 and the slide rod 22 are fixed in a clamping manner in addition to the fixing manner of the threaded connection 1311, thereby further improving the fixing effect.

[0025] In the specific setting, the slide rod 22 should be set to move only towards or away from each other in the slide groove 224 to ensure that the slide rod 22 cannot slide along the axial direction of the drilling tool in the slide groove 224.

[0026] In addition, four sliding rods 22 are arranged at equal intervals on the anti-drop screw sleeve 21, among which two spaced sliding rods 22 are fixedly connected to the first rack 222 at one end away from the connecting rod 131, and the other two spaced sliding rods 22 are fixedly connected to the second rack 223 at one end away from the connecting rod 131, the first rack 222 and the second rack 223 are meshed and connected with a gear 231, and the gear 231 is fixedly connected with a rotating rod 23, and the rotating rod 23 is rotatably installed on the anti-drop screw sleeve 21, and the first rack 222 and the second rack 223 are staggered in the height direction.

[0027] like Figure 5 As shown, the bottom of the gear 231 is lower than the top of the first rack 222, and the top of the gear 231 is higher than the bottom of the second rack 223, ensuring that the gear 231 can drive both the first rack 222 and the second rack 223 to rotate when rotating.

[0028] That is to say, when the gear 231 rotates counterclockwise, the two slide bars 22 on the second rack 223 approach each other, and the two slide bars 22 on the first rack 222 approach each other, that is, the four slide bars 22 all approach each other, thereby realizing the movement of the limit plate 221 toward the limit groove 1312.

[0029] Furthermore, the anti-drop screw sleeve 21 is fixedly connected to a cover plate 212, a rotating drum 232 is rotatably connected to the cover plate 212, the rotating drum 232 is fixedly connected to the rotating rod 23, a pull rod 234 is slidably provided on the rotating drum 232, and the pull rod 234 and the inner wall surface of the rotating drum 232 are elastically connected by a spring 233. A cross bar 235 is fixedly connected to the pull rod 234, and an insertion rod 236 is fixedly connected to the end of the cross bar 235 away from the pull rod 234, and two locking holes 24 with sizes matching the insertion rod 236 are provided on the cover plate 212.

[0030] When locking is required, first connect the anti-drop screw sleeve 21 and the connecting rod 131 thread 1311, then pull up the pull rod 234 to make the insertion rod 236 disengage from the locking hole 24, rotate the cross bar 235 until the insertion rod 236 moves to another locking hole 24, and then lower the pull rod 234. The pull rod 234 is reset under the action of the spring 233. During this process, the first rack 222 and the second rack 223 drive the sliding rod 22 to approach each other under the rotation of the gear 231, so that the limiting plate 221 moves to the limiting groove 1312 to fix the connecting rod 131 and the anti-drop screw sleeve 21.

[0031] It should be noted that, in the specific configuration, a limiting groove should be provided between the pull rod 234 and the rotating drum 232 to prevent the two from rotating relative to each other, so as to ensure that when the pull rod 234 rotates, the rotating drum 232 rotates accordingly. When the insert rod 236 moves from one locking hole 24 to another locking hole 24, the slide bar 22 should be changed from one of the two positions that are closest to each other or the two positions that are farthest from each other to the other.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A guide screw drilling tool, comprising a drilling tool body (1), a transmission shaft section (11), a universal shaft section (12), a motor section (13), a bypass valve section (14) and a guide drill bit (15), characterized in that: The motor section (13) and the bypass valve section (14) are overlapped by a connecting rod (131); a thread (1311) is provided at one end of the screw rod near the bypass valve section (14); the thread (1311) on the connecting rod (131) is connected to an anti-drop component (2) for preventing the bypass valve section (14) from being separated from the motor section (13); the anti-drop component (2) comprises an anti-drop screw sleeve (21) connected to the screw rod thread (1311) and a plurality of sliding rods (22) slidably arranged on the anti-drop screw sleeve (21); a plurality of sliding grooves (224) for sliding the sliding rods (22) are provided on the anti-drop screw sleeve (21); a limiting plate (221) is fixedly connected to the sliding rod (22); and a limiting groove (1312) matching the size of the limiting plate (221) and used to further fix the anti-drop screw sleeve (21) and the connecting rod (131) is provided on the connecting rod (131).

2. The guide screw drilling tool according to claim 1, characterized in that: The anti-drop screw sleeve (21) is provided with four sliding rods (22) at equal intervals, wherein two of the sliding rods (22) are fixedly connected to a first rack (222) at one end away from the connecting rod (131), and the other two of the sliding rods (22) are fixedly connected to a second rack (223) at one end away from the connecting rod (131), and the first rack (222) and the second rack (223) are meshedly connected to a gear (231), and a rotating rod (23) is fixedly connected to the gear (231), and the rotating rod (23) is rotatably mounted on the anti-drop screw sleeve (21).

3. The guide screw drilling tool according to claim 2, characterized in that: The first rack (222) and the second rack (223) are staggered in the height direction.

4. The guide screw drilling tool according to claim 3, characterized in that: The anti-drop screw sleeve (21) is fixedly connected to a cover plate (212), the cover plate (212) is rotatably connected to a rotating drum (232), the rotating drum (232) is fixedly connected to the rotating rod (23), a pull rod (234) is slidably provided on the rotating drum (232), and the pull rod (234) and the inner wall surface of the rotating drum (232) are elastically connected via a spring (233).

5. The guide screw drilling tool according to claim 4, characterized in that: The pull rod (234) is fixedly connected to a cross rod (235), one end of the cross rod (235) away from the pull rod (234) is fixedly connected to an insertion rod (236), and the cover plate (212) is provided with two locking holes (24) whose sizes match the insertion rod (236).

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