Broaching and shaping device for small-aperture filling feeding hole of coal mine

Abstract

The utility model provides a coal mine small-aperture filling feeding hole reaming and shaping device which comprises a fixing sleeve, a sliding block is connected in the fixing sleeve in a sliding mode, the sliding block is connected with the fixing sleeve through a spring, the sliding block is detachably connected with a shaping sleeve, and the shaping sleeve is detachably connected with a guide head. And the pressurizing mechanism is used for driving the sliding block to slide in the fixing sleeve. The device is convenient to operate, different shaping devices can be replaced according to the actual condition of the coal mine filling feeding hole, the deformed and broken coal mine filling feeding hole can be quickly processed, the workload is reduced, the utilization rate of the feeding hole and the working efficiency are improved, and the production and operation cost is effectively reduced.

Description

A coal mine small aperture filling feeding hole reaming and shaping device TECHNICAL FIELD

[0001] The utility model relates to coal mine filling feeding hole repair technical field, concretely relates to a coal mine small aperture filling feeding hole reaming and shaping device. BACKGROUND

[0002] The coal mine filling feeding hole is the important throat project of conveying the large amount of coal gangue solid waste on the ground of coal mine as filling material to the underground goaf, the feeding hole has high frequency of use, in the process of conveying the filling material into the underground goaf, the filling material impacts, washes, abrades the hole wall of the feeding hole, causes the deformation of the feeding hole even appears the damage, seriously affects the working efficiency of the feeding hole.

[0003] In view of the above situation, the feeding hole needs to be handled, and the current method for handling the deformation and damage of the feeding hole mainly has two kinds: one is to detect and repair the position of the deformation and damage of the feeding hole one by one, which has high technical requirement and large workload; one is to no longer use the feeding hole, and drill a new feeding hole near the feeding hole for use, which has high cost, long time consumption, and the formation problem encountered in the drilling process cannot be predicted. SUMMARY

[0004] In order to solve the problems existing in the prior art, a coal mine small aperture filling feeding hole reaming and shaping device is provided. The device is easy to operate, different shaping devices can be replaced according to the actual situation of the coal mine filling feeding hole, the deformed and broken coal mine filling feeding hole can be quickly handled, the workload is reduced, the utilization rate and working efficiency of the feeding hole are improved, and the production and operation cost is effectively reduced.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] The utility model provides a coal mine small aperture filling feeding hole reaming and shaping device, including fixed sleeve, the fixed sleeve is slidably connected with sliding block, the sliding block is connected with the fixed sleeve through spring, the sliding block is detachably connected with shaping sleeve, the shaping sleeve is detachably connected with guide head, still include the pressurizing mechanism for driving the sliding block to slide in the fixed sleeve.

[0007] Preferably, the fixed sleeve is provided with a T-shaped sliding groove, one end of the sliding block is fixedly connected with a T-shaped sliding block, and the T-shaped sliding block is slidably connected with the T-shaped sliding groove.

[0008] Preferably, the T-shaped sliding groove is an open structure at one end, and the T-shaped sliding block can slide out of or into the T-shaped sliding groove.

[0009] Preferably, the spring is sleeved on the sliding block, one end of the spring is connected with the sliding block, and the other end of the spring is connected with the fixed sleeve.

[0010] Preferably, the fixed sleeve is provided with a high-pressure cavity, the high-pressure cavity is located on one side of the sliding block, and the pressurizing mechanism is connected in communication with the high-pressure cavity through the drill rod.

[0011] Preferably, the sliding block is slidably connected with a fixed ring at an end away from the T-shaped sliding block, the spring is sleeved on the sliding block, one end of the spring is connected with the sliding block, and the other end of the spring is connected with the fixed ring.

[0012] Preferably, an annular clamping groove is formed between the sliding block and the fixed ring, and the fixed sleeve is slidably connected with a clamping block capable of sliding into the annular clamping groove.

[0013] Preferably, the fixed sleeve is threadedly connected with a conical sleeve, a contact surface between the conical sleeve and the clamping block is a slope, and when the conical sleeve is screwed, the sliding block can be driven to move towards the annular clamping groove.

[0014] Preferably, the conical sleeve is provided with a through hole for the sliding block to freely penetrate.

[0015] Preferably, the guide head is threadedly connected with the shaping sleeve, and the shaping sleeve is threadedly connected with the sliding block.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. The utility model discloses a guide head, the guide head is threadedly connected with the shaping sleeve, the shaping sleeve is threadedly connected with the sliding block, simultaneously utilizes the pressurizing mechanism, and the air pressure can drive the sliding block to slide in the fixed sleeve, convenient operation can be realized, the different shaping device can be replaced according to the actual situation of coal mine filling feeding hole, the deformed and broken coal mine filling feeding hole can be quickly handled, the work load is reduced, the feeding hole utilization rate and work efficiency are improved, and the production operation cost is effectively reduced.

[0018] 2. The utility model discloses a conical sleeve, when the conical sleeve rotates, the clamping block can be driven to slide into the annular clamping groove of the sliding block, when the sliding block moves, the clamping block is located in the annular clamping groove formed by the fixed ring and the sliding block, and due to the elastic force of the spring, the fixed ring and the clamping block are always in contact state, so the normal movement of the sliding block is not affected, when the spring needs to be replaced, the sliding block can be separated from the annular clamping groove by rotating the conical sleeve, the sliding block can be moved out of the fixed sleeve, and the replacement of the spring can be conveniently realized, so that the device can be repeatedly used. DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings, of which:

[0020] Fig. 1 is a whole front view one of the present application;

[0021] Fig. 2 is a whole front view two of the present application;

[0022] Fig. 3 is a whole front view three of the present application.

[0023] Explanation of reference signs:

[0024] 1 guide head; 2 first thread; 3 shaping sleeve; 4 second thread; 5 sliding block; 6 spring; 7 fixed sleeve; 8 high pressure cavity; 9 drill rod; 10 pressurizing mechanism; 11 fixed ring; 12 clamping block; 13 conical sleeve; 14 limiting block; 15 annular clamping groove; 16 through hole. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0026] Example one

[0027] As shown in Fig. 1, the present embodiment proposes a coal mine small aperture filling feeding hole reaming and shaping device, which comprises a fixed sleeve 7, a sliding block 5 is slidably connected in the fixed sleeve 7, the sliding block 5 is connected with the fixed sleeve 7 through a spring 6, the sliding block 5 is detachably connected with a shaping sleeve 3, and the shaping sleeve 3 is detachably connected with a guide head 1.

[0028] The guide head 1 is conical, so that the device as a whole can better enter the feeding hole, the shaping sleeve 3 is used for realizing the reaming and shaping work of the feeding hole, and the middle diameter of the shaping sleeve 3 is large and the diameters of the two ends are small.

[0029] The guide head 1 is provided with a first thread, the first thread is threadedly connected with the shaping sleeve 3, the shaping sleeve 3 is provided with a second thread 4, and the second thread 4 is threadedly connected with the sliding block 5. Through the threadedly connected mode, different shaping devices and guiding devices can be replaced.

[0030] The device further comprises a pressurizing mechanism 10 for driving the sliding block 5 to slide in the fixed sleeve 7. By using the pressurizing mechanism 10, the air pressure can drive the sliding block 5 to slide in the fixed sleeve 7, which is convenient to operate. Different shaping devices can be replaced according to the actual situation of the coal mine filling feeding hole, the deformed and broken coal mine filling feeding hole can be quickly processed, the workload is reduced, and the downtime period of the feeding hole is shortened.

[0031] A T-shaped sliding groove is formed in the fixed sleeve 7, and the one end of the sliding block 5 is fixedly connected with a T-shaped sliding block. The T-shaped sliding block is in sliding connection with the T-shaped sliding groove. The T-shaped sliding groove is provided to guide and limit the sliding block 5, so that the sliding block 5 always slides in the fixed sleeve 7.

[0032] The T-shaped sliding groove is an open structure at one end. The T-shaped sliding block can slide out of or into the T-shaped sliding groove, so as to facilitate the installation and disassembly of the sliding block 5 and the replacement of the spring 6.

[0033] The spring 6 is sleeved on the sliding block 5. One end of the spring 6 is connected with the sliding block 5, and the other end of the spring 6 is connected with the fixed sleeve 7. The fixed sleeve 7 is provided with a high-pressure cavity 8. The high-pressure cavity 8 is located at one side of the sliding block 5. The pressurizing mechanism 10 is connected with the high-pressure cavity 8 through a drill rod 9. The drill rod 9 can be replaced by an air pipe. The pressurizing mechanism 10 can be an air compressor. The air compressor can deliver compressed gas into the high-pressure cavity 8 through the air pipe, so as to drive the sliding block 5 to move.

[0034] In the initial state, the elastic force of the spring 6 can make the sliding block 5 and the fixed sleeve 7 be in contact. At this time, the high-pressure cavity 8 is located at one side of the sliding block 5. The pressurizing mechanism 10 delivers high-pressure gas into the high-pressure cavity 8 through the drill rod 9, which can drive the sliding block 5 to move. The spring 6 is provided to reset the sliding block 5, so as to facilitate the reciprocating reaming and shaping of the feeding hole.

[0035] Embodiment Two

[0036] Referring to FIGS. 2-3, the other structures are the same as those of Embodiment One. The difference lies in that the replacement of the spring is considered in this embodiment.

[0037] The one end of the sliding block 5 away from the T-shaped sliding block is in sliding connection with a fixed ring 11. The spring 6 is sleeved on the sliding block 5. One end of the spring 6 is connected with the sliding block 5, and the other end of the spring 6 is connected with the fixed ring 11. The fixed ring 11 is sleeved on the sliding block 5, and the fixed ring 11 always slides along the surface of the sliding block 5. The two ends of the spring 6 are respectively detachably connected with the sliding block 5 and the fixed ring 11, so as to facilitate the replacement of the spring 6.

[0038] An annular clamping groove 15 is formed between the sliding block 5 and the fixed ring 11. The fixed sleeve 7 is in sliding connection with a clamping block 12 which can slide into the annular clamping groove 15. The clamping block 12 is provided with a plurality of clamping grooves. When the clamping block 12 slides into the annular clamping groove 15, the sliding block 5 can be limited. At this time, the sliding block 5 will not move out of the fixed sleeve 7.

[0039] The fixed sleeve 7 is in threaded connection with a conical sleeve 13. The contact surface between the conical sleeve 13 and the clamping block 12 is a slope. When the conical sleeve 13 is screwed, the clamping block 12 can be driven to move towards the annular clamping groove 15, so that the clamping block 12 can move into the annular clamping groove 15 to limit the sliding block 5.

[0040] The inner ring of the conical sleeve 13 is also fixedly connected with a limiting block 14, when the conical sleeve 13 is screwed, the clamping block 12 slides into the annular clamping groove 15, at this time, the limiting block 14 can be in contact with the outer surface of the clamping block 12, the clamping block 12 is located between the limiting block 14 and the fixed sleeve 7, thereby further fixing the clamping block 12, reducing the shaking of the clamping block 12, and improving the fixing effect of the clamping block 12.

[0041] The conical sleeve 13 includes two setting modes, when it is mode one, as shown in Figure 3, which is the overall front view three of the utility model, at this time, the conical sleeve 13 needs to be set long enough, so that the sliding block 5 has enough space to move, when the conical sleeve 13 rotates to contact the clamping block 12, at this time, the inner surface of the clamping block 12 is flush with the inner surface of the fixed sleeve 7, or lower than the inner surface of the fixed sleeve 7, thereby facilitating the sliding block 5 to be separated from the clamping block 12.

[0042] When it is mode two, as shown in Figure 2, which is the overall front view two of the utility model, the conical sleeve 13 is provided with a through hole 16 for the sliding block 5 to freely pass through, compared with mode one, the length of the conical sleeve 13 does not need to be set too long, as long as it can be guaranteed that when the conical sleeve 13 rotates to contact the clamping block 12, at this time, the through hole 16 can be moved to one side of the clamping block 12, at this time, the clamping block 12 can move out of the through hole 16, thereby facilitating the sliding block 5 to be separated from the clamping block 12.

[0043] The specific working process is as follows: the pressurizing mechanism 10 is connected with the high-pressure cavity 8 through the drill rod 9, the suitable guide head 1 and the shaping sleeve 3 are selected according to the deformation degree of the feeding hole, the guide head 1 is connected with the shaping sleeve 3 through threads, the shaping sleeve 3 is connected with the sliding block 5 through threads, the guide head 1 and the shaping sleeve 3 are put into the deformed feeding hole, the pressurizing mechanism 10 is adjusted to a suitable pressure, the pressurizing mechanism 10 is opened, the guide head 1 and the shaping sleeve 3 in the feeding hole reciprocate and impact, and the feeding hole is expanded and shaped.

[0044] When the sliding block 5 is installed, the conical sleeve 13 is loosened, at this time, the inner surface of the clamping block 12 is flush with the inner surface of the fixed sleeve 7, the T-shaped sliding block of the sliding block 5 is slid into the T-shaped sliding groove of the fixed sleeve 7, the conical sleeve 13 is tightened, the conical sleeve 13 drives the clamping blocks 12 to move into the annular clamping groove 15, the sliding block 5 is limited, at this time, the limiting block 14 can be in contact with the outer surface of the clamping block 12, the clamping block 12 is located between the limiting block 14 and the fixed sleeve 7, thereby further fixing the clamping block 12.

[0045] When the spring 6 is damaged after long time use, the conical sleeve 13 is loosened, the conical sleeve 13 no longer limits the clamping block 12, one side of the clamping block 12 is made of magnetic material, the clamping block 12 is attracted by a magnet, the clamping block 12 can be moved out of the through hole 16, the clamping block 12 no longer limits the T-shaped sliding block of the fixed ring 11 and the sliding block 5, the sliding block 5 can be moved out of the fixed sleeve 7, and the spring 6 is replaced.

[0046] There is a coal mine feeding hole with a hole depth of 283 m and a hole diameter of Φ530 mm. Due to the scouring and abrasion of coal gangue solid waste to the feeding hole, the feeding hole is damaged at many places. According to the observation of the downhole viewer, the hole wall of the feeding hole is deformed or damaged at many places, and needs to be repaired.

[0047] First step: downhole viewer is used to check the condition of the feeding hole, and it is found that the feeding hole is severely deformed and damaged at the depth of 176 m-182 m, and the hole diameter is small. The deformed and damaged casing needs to be treated, and a smaller casing is downhole, and a new feeding hole is formed by well cementing.

[0048] Second step: the deformed and damaged section of the feeding hole is treated by the method of step-by-step reaming and shaping, and the reaming and shaping basic drilling tool assembly is determined: guide head 1 (φmax=80 mm) + shaping sleeve 3 (φmax=130 mm) + sliding block 5 + fixed sleeve 7 (φ=127 mm) + drill rod 9 (φ=127 mm) + pressure mechanism 10.

[0049] Third step: the reaming and shaping basic drilling tool assembly is used to impact reaming from 176 m, and the hole is reamed to 178.3 m. The shaping sleeve 3 with φmax=140 mm is replaced, and the hole is reamed to 186.2 m by impact.

[0050] Fourth step: on the basis of the reaming and shaping basic drilling tool assembly, the shaping sleeve 3 with φmax=165 mm is replaced, and the hole is reamed to 189.85 m by impact. The shaping sleeve 3 with φmax=215 mm is replaced, and the hole is reamed to 186.2 m by impact. The shaping sleeve 3 with φmax=240 mm is replaced, and the hole is reamed to 186.2 m by impact.

[0051] Fifth step: on the basis of the reaming and shaping basic drilling tool assembly, the shaping sleeve 3 with φmax=260 mm is replaced, and the hole is reamed to 185.85 m by impact. The shaping sleeve 3 with φmax=285 mm is replaced, and the hole is reamed to 194.3 m by impact. The shaping sleeve 3 with φmax=305 mm is replaced, and the hole is reamed to 189.85 m by impact.

[0052] Sixth step: on the basis of the reaming and shaping base drill tool combination, change the shaping sleeve 3 of φmax=325mm, impact reaming to 250.3m; change the shaping sleeve 3 of φmax=350mm, impact reaming to 250.3m; change the shaping sleeve 3 of φmax=370mm, impact reaming to 282.5m;

[0053] Seventh step: on the basis of the reaming and shaping base drill tool combination, change the shaping sleeve 3 of φmax=380mm, impact reaming to 282.5m; change the shaping sleeve 3 of φmax=395mm, impact reaming to 186.2m;

[0054] Eighth step: on the basis of the reaming and shaping base drill tool combination, change the shaping sleeve 3 of φmax=410mm, impact reaming to 190.3m; change the shaping sleeve 3 of φmax=425mm, impact reaming to 186.3m;

[0055] Ninth step: lower 26 Φ339.72mm casings 26.8m in the reaming and shaping charge hole, the casing adopts a threaded connection;

[0056] Tenth step: carry out cement slurry injection pipe fixing and setting in the annular gap between the Φ339.72mm casing and the Φ530mm casing, and the hole repairing work is completed.

[0057] Under the condition that the coal mine filling charge hole is deformed and cannot normally transport coal gangue, by controlling the reaming and shaping device, optimizing the combination of the shaping sleeve 3 and the guide head 1, and strictly controlling the reaming direction, the coal mine filling charge hole is successfully repaired, the ground coal gangue is smoothly backfilled to the underground goaf through the filling charge hole, the repair cost is effectively reduced, the operation of the construction method is simple, the integrity of the charge hole body can be maintained, the problem of charge hole deformation is effectively solved, and the method has certain guiding significance for the deformation repair engineering of the coal mine filling charge hole.

[0058] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A coal mine small aperture filling feeding hole reaming and shaping device comprising a fixing sleeve (7), characterized in that, The fixed sleeve (7) is slidably connected with a sliding block (5), the sliding block (5) is connected with the fixed sleeve (7) through a spring (6), the sliding block (5) is detachably connected with a shaping sleeve (3), the shaping sleeve (3) is detachably connected with a guide head (1); further comprising a pressurizing mechanism (10) for driving the sliding block (5) to slide in the fixed sleeve (7).

2. The coal mine small aperture filling feeding hole reaming and shaping device according to claim 1, characterized in that, The fixed sleeve (7) is slidably connected with a sliding block (5), the sliding block (5) is connected with the fixed sleeve (7) through a spring (6), the sliding block (5) is detachably connected with a shaping sleeve (3), the shaping sleeve (3) is detachably connected with a guide head (1); further comprising a pressurizing mechanism (10) for driving the sliding block (5) to slide in the fixed sleeve (7).

3. The coal mine small-diameter filling feeding hole reaming and shaping device according to claim 2, characterized in that, The T-shaped sliding slot is an open structure at one end, and the T-shaped sliding block can slide out of or into the T-shaped sliding slot.

4. The coal mine small aperture filling feeding hole reaming and shaping device according to claim 1, characterized in that, The spring (6) is sleeved on the sliding block (5), one end of the spring (6) is connected with the sliding block (5), and the other end of the spring (6) is connected with the fixed sleeve (7).

5. The coal mine small aperture filling feeding hole reaming and shaping device according to claim 1, characterized in that, The fixed sleeve (7) is slidably connected with a sliding block (5), the sliding block (5) is connected with the fixed sleeve (7) through a spring (6), the sliding block (5) is detachably connected with a shaping sleeve (3), the shaping sleeve (3) is detachably connected with a guide head (1); further comprising a pressurizing mechanism (10) for driving the sliding block (5) to slide in the fixed sleeve (7).

6. The coal mine small aperture filling feeding hole reaming and shaping device according to claim 2, characterized in that, The sliding block (5) is slidably connected with a fixed ring (11) away from the T-shaped sliding block, the spring (6) is sleeved on the sliding block (5), one end of the spring (6) is connected with the sliding block (5), and the other end of the spring (6) is connected with the fixed ring (11).

7. The coal mine small-diameter filling feeding hole reaming and shaping device according to claim 6, characterized in that, The sliding block (5) and the fixed ring (11) form an annular clamping groove (15), and the fixed sleeve (7) is slidably connected with a clamping block (12) capable of sliding into the annular clamping groove (15).

8. The coal mine small-diameter filling feeding hole reaming and shaping device according to claim 7, characterized in that, The fixed sleeve (7) is threadedly connected with a conical sleeve (13), the contact surface between the conical sleeve (13) and the clamping block (12) is an inclined surface, and when the conical sleeve (13) is screwed, the sliding block (5) can be driven to move towards the annular clamping groove (15).

9. The coal mine small aperture filling feeding hole reaming and shaping device according to claim 8, characterized in that, The conical sleeve (13) is provided with a through hole (16) for the sliding block (5) to freely pass through.

10. The coal mine small aperture filling feeding hole reaming and shaping device according to claim 1, characterized in that, The guide head (1) and the shaping sleeve (3) are threadedly connected, and the shaping sleeve (3) and the sliding block (5) are threadedly connected.

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