Emergency rescue drilling and obstacle removal device and method of use

Abstract

The application discloses an emergency rescue drilling obstacle removing device which is inserted into a steel sheath and comprises a main shaft base, a rotating main shaft which is integrally formed at the outer end of the main shaft base, a torque transmission drill rod which is installed at the inner end of the main shaft base, a thread which is formed at the outer wall outer end of the rotating main shaft, a supporting mechanism base which is sleeved at the outer wall inner end of the rotating main shaft, a supporting mechanism which is fixedly installed at the outer surface of the supporting mechanism base, a torque transmission disc which is assembled at the outer wall inner end of the main shaft base, and a sheath which is inserted into the steel sheath and is fixedly installed at the outer wall of the torque transmission disc through screws. The use method mainly comprises three steps of pushing in, supporting open and withdrawing. The supporting mechanism in the emergency rescue drilling obstacle removing device is mainly used for moving to the position of a hard object in a rescue hole, supporting open the hard object through the mode of opening the supporting claws, and then enabling the steel sheath to smoothly pass the position, so that the drill bit can continue drilling, the drilling track channel is dredged, and the generation of a stuck drill and a waste hole is prevented.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine and tunnel collapse rescue drilling, and particularly provides an emergency rescue drilling and obstacle removing device and a use method. BACKGROUND

[0002] In recent years, with the increasing efforts of the state in coal mine safety inspection and emergency rescue system construction, various advanced rescue equipment has been put into use. However, with the increasing depth of coal mining year by year, the difficulty of ground rescue in terms of time consumption and accurate positioning is also increasing, so it is imperative to develop horizontal rescue in the adjacent area.

[0003] The top and side of the mine and tunnel are usually supported by metal such as section steel, anchor rod and anchor net. When roof caving or collapse accident occurs, the irregular crossbar of the hard objects such as section steel, anchor rod and anchor net used for support is in the collapsed earth, gravel or coal. In the construction of horizontal rescue hole, the existing technical equipment cannot quickly break the hard objects such as falling rocks and section steel in the complex collapsed body, resulting in drilling obstruction, drill sticking and waste hole, which seriously hinders the construction progress. SUMMARY

[0004] To solve the above problems, the present application provides an emergency rescue drilling and obstacle removing device, which can quickly remove obstacles and dredge the drilling track channel when encountering hard objects such as section steel, anchor rod and anchor net during rescue hole drilling construction, preventing the generation of drill sticking and waste hole. In addition, the present application also provides a use method of the emergency rescue drilling and obstacle removing device.

[0005] To achieve the above purpose, the technical solution adopted by the present application is as follows: an emergency rescue drilling and obstacle removing device is inserted into the inside of a steel sheath, which comprises a main shaft base, the outer end of the main shaft base is integrally formed with a rotating main shaft, and the inner end of the main shaft base is installed with a torque drill rod, the outer wall of the rotating main shaft is provided with a thread at the outer end, the outer wall of the rotating main shaft is sleeved with a strutting mechanism base at the inner end, the outer surface of the strutting mechanism base is fixedly installed with a strutting mechanism, the outer wall of the torque disc is fixedly installed with a sheath inserted into the inside of the steel sheath through screws, and the strutting mechanism is located in the inside of the sheath.

[0006] The strutting mechanism comprises a strutting seat, a threaded block, a strutting claw and a supporting rod, the strutting seat is fixedly installed on the outer surface of the strutting mechanism base, the strutting claw is rotatably assembled on the strutting seat, the threaded block is screwed on the thread of the rotating main shaft, and the two ends of the supporting rod are respectively hinged to the hinge seat of the threaded block and the inner wall of the strutting claw.

[0007] Further, the inner wall of the steel sheath is uniformly integrally formed with a circular arc protrusion, the outer wall of the spreading claw is integrally formed with a limiting protrusion, the circular arc protrusion and the limiting protrusion are located in the same plane, the rotating track of the limiting protrusion is coincident with the circular arc protrusion, and the inner and outer sides of the circular arc protrusion are both processed with chamfers.

[0008] Further, the outer surface of the spreading seat is uniformly provided with a spreading claw mounting groove, the inner wall of the spreading claw mounting groove is assembled with a spreading claw pin shaft, and the inner end of the spreading claw is hinged to the spreading claw pin shaft.

[0009] Further, the inner wall of the sheath is uniformly integrally formed with an arc-shaped limiting plate, and the outer end of the spreading seat is provided with an arc-shaped stepped groove corresponding to the arc-shaped limiting plate.

[0010] Further, the outer wall of the sheath is integrally formed with an annular protrusion, the outer wall of the annular protrusion is provided with a spiral groove, the spiral groove is left-handed, and the thread of the rotating main shaft is left-handed.

[0011] Further, the inner end of the main shaft base is provided with a spline groove, and the inside of the torque transmission disc is provided with a spline matched with the spline groove.

[0012] Further, the outer wall of the rotating main shaft is fixedly installed with a retaining sleeve through a screw, and the threads of the spreading mechanism base and the rotating main shaft are located on the two sides of the retaining sleeve, respectively.

[0013] A method for using an emergency rescue drilling and obstacle removing device, which utilizes the above-mentioned emergency rescue drilling and obstacle removing device, and specifically includes the following steps.

[0014] Step one, push-in state, connect the emergency rescue drilling and obstacle removing device to the front end of the torque drilling rod, ensure that the spreading claws are in a closed state, then use the rear-end drilling equipment to drive, rotate counterclockwise to push the emergency rescue drilling and obstacle removing device to the front end of the steel sheath, and the rotating sheath will guide the mudstone debris in the inner cavity of the steel sheath to the rear end of the emergency rescue drilling and obstacle removing device through the spiral groove on the outer wall of the sheath.

[0015] Step two, spreading state, when the emergency rescue drilling and obstacle removing device moves to the front end of the steel sheath, the four spreading claws at the front end of the emergency rescue drilling and obstacle removing device are closed in a conical shape, which can easily pass through the obstacle, the rear-end drilling equipment is used to apply a clockwise rotating torque to the torque drilling rod to drive the rotating main shaft to rotate, the threaded block installed on the rotating main shaft is moved forward, the supporting rod becomes vertical, the four spreading claws are spread, the obstacle is expanded out of the drilling track, and the steel sheath is pushed into the steel sheath by the rear-end drilling equipment to pass through the obstacle.

[0016] Step three, withdraw state, use the transmission torque drill pipe to drive the emergency rescue drilling and obstacle removal device to rotate counterclockwise, move the threaded block on the rotating main shaft backward, retract the opened pawl, and withdraw the emergency rescue drilling and obstacle removal device.

[0017] The beneficial effects of using the present application are:

[0018] The present application mainly uses the opening mechanism in the emergency rescue drilling and obstacle removal device to move to the hard object in the rescue hole, and opens the hard object by opening the pawl, so that the steel sheath can pass through this place smoothly, so that the drill bit can continue to drill, dredge the drilling track channel, and prevent the occurrence of sticking and waste holes.

[0019] The present application designs a spiral groove structure on the outer wall of the sheath, so that the emergency rescue drilling and obstacle removal device can remove the mud and debris falling into the steel sheath to the rear end of the emergency rescue drilling and obstacle removal device when rotating counterclockwise and moving forward in the steel sheath, so that the emergency rescue drilling and obstacle removal device can smoothly travel to the front end of the steel sheath, and then the opening mechanism can perform more effective obstacle removal work in a larger range.

[0020] The present application sets a circular arc protrusion on the inner wall of the steel sheath, and sets a limiting protrusion on the outer wall of the pawl, which can limit the rotation of the opening mechanism, so that the rotation of the rotating main shaft can effectively drive the translation of the threaded block, and then effectively realize the opening action of the pawl, and effectively complete the obstacle removal work. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the present application.

[0022] Figure 2 It is a front view of the present application.

[0023] Figure 3 It is a right view of the steel sheath of the present application.

[0024] Figure 4 It is a sectional view of A-A in the present application. Figure 3

[0025] Figure 5 It is a perspective view of the opening seat of the present application.

[0026] Figure 6 It is a perspective view of the sheath of the present application.

[0027] Figure 7 It is a front view of the sheath of the present application.

[0028] Figure 8 It is a perspective view of the torque transmission disc of the present application.

[0029] ​The reference signs include: 1, steel sheath, 2, main shaft base, 3, rotating main shaft, 4, opening mechanism base, 5, opening mechanism, 51, opening seat, 511, opening claw installation slot, 512, opening claw pin shaft, 513, arc stepped groove, 52, threaded block, 53, opening claw, 531, limiting protrusion, 54, support rod, 6, torque transmission disc, 7, sheath, 8, circular arc protrusion, 9, spiral groove, 10, arc limiting plate, 11, spline, 12, retaining sleeve. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] Embodiment one

[0032] Reference Figures 1 to 8 An emergency rescue drilling obstacle removal device is inserted into the steel sheath 1 and includes a main shaft base 2. The outer end of the main shaft base 2 is integrally formed with a rotating main shaft 3, and the inner end of the main shaft base 2 is provided with a torque transmission drill rod. The outer wall of the rotating main shaft 3 is provided with a thread at the outer end, and the outer wall of the rotating main shaft 3 is sleeved with an opening mechanism base 4 at the inner end. The opening mechanism base 4 is fixedly installed with an opening mechanism 5 on the outer surface. The outer wall of the main shaft base 2 is assembled with a torque transmission disc 6, the torque transmission disc 6 is fixedly installed with a sheath 7 inserted into the steel sheath 1 through a screw, and the opening mechanism 5 is located inside the sheath 7.

[0033] When the rescue hole drilling construction using a casing drilling rig encounters hard objects such as steel, anchor rods, anchor nets, etc., the internal drilling tools and drill bit are withdrawn, the emergency rescue drilling obstacle removal device is sent to the bottom of the hole by using the torque transmission drill rod, the obstacle is opened, then the steel sheath 1 is pushed in again, then the emergency rescue drilling obstacle removal device is taken out, and the drilling is performed again using the drilling tools.

[0034] The inner wall of the steel sheath 1 is integrally formed with a retaining ring at the front end, which is used to limit the position of the emergency rescue drilling obstacle removal device at the frontmost position in the steel sheath 1.

[0035] The main shaft base 2 and the torque transmission drill rod are connected by hexagonal insertion and are limited in axial direction by a “U” pin.

[0036] The torque transmission drill rod is connected to the drilling rig, and the emergency rescue drilling obstacle removal device is moved in the steel sheath 1 by the torque transmission drill rod, and the emergency rescue drilling obstacle removal device can also be rotated.

[0037] As Figure 2As shown, the expansion mechanism 5 comprises an expansion seat 51, a threaded block 52, an expansion claw 53 and a support rod 54, the expansion seat 51 is fixedly installed on the outer surface of the expansion mechanism base 4, the expansion claw 53 is rotatably assembled on the expansion seat 51, the threaded block 52 is screwed on the thread of the rotating main shaft 3, and the two ends of the support rod 54 are respectively hingedly connected to the hinge seat of the threaded block 52 and the inner wall of the expansion claw 53.

[0038] When the rotating main shaft 3 rotates with the torque drill rod, and the expansion mechanism 5 does not rotate, the threaded block 52 will move transversely on the thread of the rotating main shaft 3, driving the support rod 54 to deflect, when the threaded block 52 moves to the outer end, it will open the expansion claw 53, and when the threaded block 52 moves to the inner end, it will close the expansion claw 53.

[0039] The expansion claw 53 in the expansion mechanism 5 can expand the obstacles in the drill hole to outside the drilling track, so as to facilitate the forward movement of the steel sheath 1 and the drilling work of the drill bit.

[0040] Specifically, as shown in the drawings, Figures 1 to 4 The outer end of the inner wall of the steel sheath 1 is uniformly and integrally formed with a circular arc protrusion 8, the outer wall of the expansion claw 53 is integrally formed with a limiting protrusion 531, the circular arc protrusion 8 and the limiting protrusion 531 are located in the same plane, the limiting protrusion 531 has a rotation track coinciding with the circular arc protrusion 8, and the inner and outer sides of the circular arc protrusion 8 are both chamfered.

[0041] Since the rotation track of the limiting protrusion 531 coincides with the circular arc protrusion 8, the circular arc protrusion 8 plays a role of blocking the limiting protrusion 531, so that the rotating main shaft 3 cannot drive the expansion mechanism 5 to rotate when it rotates, thereby ensuring that the threaded block 52 can move.

[0042] The chamfering of the outer side and the inner side of the circular arc protrusion 8 makes the emergency rescue drilling and obstacle removal device and the retractable drill bit for drilling not be stuck at the front end of the steel sheath pipe, which is beneficial to the drill bit jacking and the retractable drill bit retraction.

[0043] Specifically, as shown in the drawings, Figure 5 The outer surface of the expansion seat 51 is uniformly provided with an expansion claw mounting groove 511, the inner wall of the expansion claw mounting groove 511 is assembled with an expansion claw pin shaft 512, and the inner end of the expansion claw 53 is hingedly connected to the expansion claw pin shaft 512.

[0044] Specifically, as shown in the drawings, Figure 5 And Figure 6 The inner wall of the sheath 7 is uniformly and integrally formed with an arc-shaped limiting plate 10, and the outer end of the expansion seat 51 is provided with an arc-shaped stepped groove 513 corresponding to the arc-shaped limiting plate 10.

[0045] The arc degree of the arc-shaped stepped groove 513 is greater than that of the expansion claw mounting groove 511, so as to ensure that the expansion seat 51 can always limit the position of the sheath 7.

[0046] Through the cooperation of the arc-shaped limiting plate 10 and the arc-shaped stepped groove 513, the cooperation of the support mechanism base 4 and the main shaft base 2, and the cooperation of the torque transmission disc 6 and the main shaft base 2, the main shaft base 2, the rotating main shaft 3, the support mechanism base 4, the support mechanism 5, the torque transmission disc 6 and the sheath 7 are assembled together, and the support mechanism base 4 and the support mechanism 5 can rotate in the sheath 7.

[0047] Specifically, as shown in Figure 6 and Figure 7 , the outer wall of the sheath 7 is integrally formed with an annular protrusion, and the outer wall of the annular protrusion is provided with a helical groove 9, and the helical groove 9 is left-handed, and the thread of the rotating main shaft 3 is left-handed.

[0048] The annular protrusion contacts the inner wall of the steel sheath 1, and when the sheath 7 rotates counterclockwise and advances, the steel sheath 1 can guide the mud debris in front of the steel sheath 1 to the rear of the emergency rescue drilling and obstacle removal device through the helical groove 9, so that the emergency rescue drilling and obstacle removal device can advance without being hindered by the mud debris, ensuring that the limiting protrusion 531 and the circular arc protrusion 8 are located in the same plane.

[0049] Specifically, as shown in Figure 8 , the inner end of the main shaft base 2 is provided with a spline groove, and the inside of the torque transmission disc 6 is provided with a spline 11 matched with the spline groove.

[0050] The spline 11 realizes the installation of the torque transmission disc 6 on the main shaft base 2, and the torque transmission disc 6 and the sheath 7 can rotate together with the main shaft base 2.

[0051] Specifically, as shown in Figure 2 , the outer wall of the rotating main shaft 3 is fixedly installed with a retaining sleeve 12 through a screw, and the threads of the support mechanism base 4 and the rotating main shaft 3 are located on both sides of the retaining sleeve 12.

[0052] The retaining sleeve 12 is a semicircular structure, and two retaining sleeves 12 are symmetrically installed here.

[0053] Example two

[0054] A method for using an emergency rescue drilling and obstacle removal device, which utilizes the emergency rescue drilling and obstacle removal device of example one, specifically comprising the following steps:

[0055] Step one, push-in state, connect the emergency rescue drilling and barrier removal device to the front end of the transmission torque drill pipe, while ensuring that the opening claws 53 are in a closed state, then use the rear-end drilling equipment to drive, rotate counterclockwise to push the emergency rescue drilling and barrier removal device to the front end of the steel sheath 1, the rotating sheath 7 will guide the mud and debris in the inner cavity of the steel sheath 1 to be discharged to the rear end of the emergency rescue drilling and barrier removal device through the external spiral groove 9;

[0056] Step two, opening state, when the emergency rescue drilling and barrier removal device moves to the front end of the steel sheath 1, since the four opening claws 53 at the front end of the emergency rescue drilling and barrier removal device are closed in a conical shape at this time, it can easily pass through the obstacle, use the rear-end drilling equipment to apply clockwise rotating torque to the transmission torque drill pipe, drive the rotating shaft 3 to rotate, make the threaded block 52 installed on the rotating shaft 3 move forward, make the support rod 54 become vertical, drive the four opening claws 53 to open, expand the obstacle outside the drilling trajectory, use the rear-end drilling equipment to push the steel sheath 1 to pass through the obstacle;

[0057] Step three, withdrawal state, use the transmission torque drill pipe to drive the emergency rescue drilling and barrier removal device to rotate counterclockwise, make the threaded block 52 installed on the rotating shaft 3 move backward, make the four opening claws 53 that have been opened shrink, use the transmission torque drill pipe to drive the emergency rescue drilling and barrier removal device to withdraw.

[0058] After the emergency rescue drilling and barrier removal device is withdrawn, the drilling tools and drill bits can be used again for drilling work.

[0059] The above is only the preferred embodiment of the present application, for those skilled in the art, according to the idea of the present application, many changes can be made in the specific implementation and application range, as long as these changes do not deviate from the concept of the present application, they all belong to the protection scope of the present application.

Claims

1. A method of using an emergency rescue drilling and obstacle removal device, characterized in that: The emergency rescue drilling obstacle removing device is inserted into the steel sheath (1) and comprises a main shaft base (2), a rotating main shaft (3) integrally formed at the outer end of the main shaft base (2), and a torque transmission drill rod installed at the inner end of the main shaft base (2), a thread is formed at the outer wall of the rotating main shaft (3), a support opening mechanism base (4) is sleeved on the outer wall of the rotating main shaft (3), a support opening mechanism (5) is fixedly installed on the outer surface of the support opening mechanism base (4), a torque transmission disc (6) is assembled on the outer wall of the main shaft base (2), a sheath (7) is fixedly installed on the outer wall of the torque transmission disc (6) and inserted into the steel sheath (1), and the support opening mechanism (5) is located in the sheath (7). The support opening mechanism (5) comprises a support opening seat (51), a threaded block (52), a support opening claw (53), and a support rod (54), the support opening seat (51) is fixedly installed on the outer surface of the support opening mechanism base (4), the support opening claw (53) is rotatably assembled on the support opening seat (51), the threaded block (52) is screwed on the thread of the rotating main shaft (3), and the two ends of the support rod (54) are respectively hinged to the hinge seats of the threaded block (52) and the inner wall of the support opening claw (53). The outer wall of the sheath (7) is integrally formed with an annular protrusion, a spiral groove (9) is formed on the outer wall of the annular protrusion, and the rotation direction of the spiral groove (9) is left-handed, and the thread of the rotating main shaft (3) is left-handed. Specifically, the following steps are included: Step one, push-in state, connect the emergency rescue drilling obstacle removing device to the front end of the torque transmission drill rod, ensure that the support opening claw (53) is in a closed state, then use the rear-end drilling equipment to drive, rotate counterclockwise to push the emergency rescue drilling obstacle removing device to the front end of the steel sheath (1), and the rotating sheath (7) can guide the mudstone debris in the inner cavity of the steel sheath (1) to the rear end of the emergency rescue drilling obstacle removing device through the spiral groove (9) outside the sheath (7); Step two, support opening state, when the emergency rescue drilling obstacle removing device moves to the front end of the steel sheath (1), the four support opening claws (53) at the front end of the emergency rescue drilling obstacle removing device are closed and form a conical shape, so that the obstacle can be easily crossed, the rear-end drilling equipment is used to apply a clockwise rotating torque to the torque transmission drill rod to drive the rotating main shaft (3) to rotate, the threaded block (52) installed on the rotating main shaft (3) is moved forward, the support rod (54) becomes vertical, the four support opening claws (53) are driven to open, the obstacle is expanded outside the drilling track, and the rear-end drilling equipment is used to push the steel sheath (1) to cross the obstacle; Step three, withdrawal state, rotate the emergency rescue drilling obstacle removing device counterclockwise by using the torque transmission drill rod, move the threaded block (52) installed on the rotating main shaft (3) backward, and make the four support opening claws (53) shrink, and then withdraw the emergency rescue drilling obstacle removing device by using the torque transmission drill rod.

2. The method for using the emergency rescue drilling and obstacle removing device according to claim 1, characterized in that: The inner wall of the steel sheath (1) is uniformly integrally formed with a circular arc protrusion (8), the outer wall of the strutting claw (53) is integrally formed with a limiting protrusion (531), the circular arc protrusion (8) and the limiting protrusion (531) are located in the same plane, the rotating track of the limiting protrusion (531) coincides with the circular arc protrusion (8), and the inner and outer sides of the circular arc protrusion (8) are both chamfered.

3. The method for using the emergency rescue drilling and obstacle removing device according to claim 1, characterized in that: The outer surface of the strutting seat (51) is uniformly provided with a strutting claw mounting groove (511), the inner wall of the strutting claw mounting groove (511) is assembled with a strutting claw pin shaft (512), and the inner end of the strutting claw (53) is hinged to the strutting claw pin shaft (512).

4. The method for using the emergency rescue drilling and obstacle removing device according to claim 1, characterized in that: The inner wall of the sheath (7) is uniformly integrally formed with an arc-shaped limiting plate (10), and the outer end of the strutting seat (51) is provided with an arc-shaped stepped groove (513) corresponding to the arc-shaped limiting plate (10).

5. The method of using the emergency relief drilling and debris removal apparatus of claim 1, wherein: The inner end of the main shaft base (2) is provided with a spline groove, and the inside of the torque transmission disc (6) is provided with a spline (11) matched with the spline groove.

6. The method of using the emergency relief drilling and debris removal apparatus of claim 1, wherein: The outer wall of the rotating main shaft (3) is fixedly provided with a retaining sleeve (12) through screws, and the threads of the strutting mechanism base (4) and the rotating main shaft (3) are located on the two sides of the retaining sleeve (12) respectively.

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