A return air chute drilling device

Abstract

The utility model discloses a kind of air return channel drilling devices, it is related to air return channel technical field, including chassis, the chassis top center place is fixedly installed with first telescopic column, first telescopic column inner side wall is fixedly installed with rack, rack is meshed with telescopic gear, telescopic gear side wall is rotatably installed with support, the end of support away from telescopic gear is fixedly installed with second telescopic column, the bottom of second telescopic column is threadedly connected with threaded rod, the bottom of threaded rod is fixedly installed with driven gear;In the utility model, cleaning ring carries out cleaning to transparent dust collecting box inner wall along with the telescopic motion of multistage telescopic column, effectively reduce the accumulation of dust and chippings, maintain the transparency of transparent dust collecting box, and operator can accurately judge the shape and perpendicular angle of drilling, to improve the accuracy and safety of drilling operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to air return trough technical field, concretely is a kind of air return trough drilling device. BACKGROUND

[0002] At the present time when coal resources exploitation is promoted to deeper level, the operation environment of fully mechanized caving face is particularly complex, due to the stress transfer and concentration of hard roof, it is easy to cause large-area roof collapse, rock burst and other problems, seriously affect the efficient recovery of coal resources and the safety maintenance of roadway, directional long-hole drilling hydraulic fracturing technology effectively manages and disperses the stress concentration phenomenon in roof strata by accurately controlling drilling path and fracturing operation, provides strong guarantee for the safe exploitation of resources.

[0003] But in the drilling operation process, the dust produced causes serious interference to observation operation, in order to ensure the accuracy and safety of drilling, operator needs to pay attention to the shape of drilling and the vertical angle of drill bit at all times to adjust drilling parameters and avoid potential geological risk.

[0004] At present, in order to reduce the influence of dust on observation, a common method is to install a circular dust-collecting device above the drill bit, which collects the dust produced in the drilling process by physical blocking, thereby keeping the drilling area relatively clean, facilitating the observation of operator, although the dust-collecting device can collect dust to a certain extent, but with the passage of time, dust will gradually cover the inner wall of the device, forming a layer of difficult-to-remove dust layer, which not only reduces the collection efficiency of the dust-collecting device, more importantly, the existence of dust layer still seriously obstructs the vision of operator, so that they are difficult to accurately judge the shape of drilling and vertical angle, thereby affecting the precision and safety of drilling operation.

[0005] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of air return trough drilling device to solve the problems in the above background.

[0007] The utility model provides a kind of return air channel drilling device, including chassis, the chassis top center place is fixedly installed with first telescopic column, the first telescopic column inner wall is fixedly installed with rack, the rack is engaged with telescopic gear, the telescopic gear side wall is rotatably installed with support, the support end away from telescopic gear is fixedly installed with second telescopic column, the second telescopic column bottom is threadedly connected with threaded rod, the threaded rod bottom is fixedly installed with driven gear, the driven gear is rotatably installed at the top of chassis, the driven gear outer wall is engaged with driving gear, the driving gear bottom is fixedly installed on the drive end of micro motor, the micro motor is fixedly installed on the top of chassis The second telescopic column inner wall is engaged with third telescopic column, the third telescopic column inner wall is engaged with fourth telescopic column, the fourth telescopic column top is fixedly installed with support column, the support column top is fixedly installed with support rod, the support rod side end away from support column is fixedly installed with cleaning ring.

[0008] Further, the fourth telescopic column inner wall center place is fixedly installed with third telescopic rod, the third telescopic rod bottom is slidably installed with second telescopic rod, the second telescopic rod outer wall bottom is slidably installed with first telescopic rod, the first telescopic rod inner wall is slidably installed with threaded rod.

[0009] Further, the chassis top edge place is threadedly installed with transparent dust collecting box, the transparent dust collecting box top is threadedly connected with cutting ring.

[0010] Further, the chassis bottom is fixedly installed with fixed ring, the fixed ring side away from chassis is rotatably installed with connecting column one, the connecting column one outer wall is fixedly installed in the connecting hole inner wall opened in the end of clamping piece, the connecting column one end away from clamping piece is fixedly installed with connecting rod, the connecting rod end away from connecting column one is fixedly installed with connecting column two, the connecting column two end is rotatably installed with rotating ring.

[0011] Further, the material of the side wall of the cleaning ring is rubber, and an anti-sticking coating is brushed on the surface of the rubber.

[0012] Further, the material of the cutting ring is hard alloy, and a plurality of cutting teeth are formed in the top of the cutting ring.

[0013] Compared with the prior art, the utility model has the advantages that: the cleaning ring cleans the inner wall of the transparent dust collecting box by telescopic movement of the multi-stage telescopic column, effectively reduces the accumulation of dust and debris, maintains the transparency of the transparent dust collecting box, and the operator can accurately judge the shape and vertical angle of the drilling, thereby improving the precision and safety of the drilling operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a cross-sectional structure schematic view of a return air channel drilling device.

[0015] Figure 2 A schematic diagram of the bottom structure of the telescopic device of a return air roadway drilling device;

[0016] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0017] Figure 4 A schematic diagram of the top structure of a return air roadway drilling device;

[0018] Figure 5 A schematic diagram of the bottom structure of a return air roadway drilling device;

[0019] Figure 6 This is an exploded structural diagram of the clamping mechanism of a return air roadway drilling device.

[0020] In the diagram: 1. Chassis; 2. Transparent dust collection box; 3. Primary telescopic column; 4. Secondary telescopic column; 5. Tertiary telescopic column; 6. Quaternary telescopic column; 7. Cleaning ring; 8. Support column; 9. Tertiary telescopic rod; 10. Secondary telescopic rod; 11. Primary telescopic rod; 12. Threaded rod; 13. Driven gear; 14. Driven gear; 15. Micro motor; 16. Rack; 17. Support rod; 18. Rotating ring; 19. Telescopic gear; 20. Bracket; 21. Cutting ring; 22. Connecting column one; 23. Connecting rod; 24. Connecting column two; 25. Clamping plate; 26. Connecting hole; 27. Fixing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 - Figure 6The utility model provides a kind of technical scheme: a return air trough drilling device, including bottom disc 1, bottom disc 1 top center place is fixedly installed with first telescopic column 3, first telescopic column 3 inner wall is fixedly installed with rack 16, rack 16 is engaged with telescopic gear 19, telescopic gear 19 side wall is rotatably installed with support 20, support 20 is fixedly installed with second telescopic column 4 at the end away from telescopic gear 19, second telescopic column 4 bottom is screw-connected with threaded rod 12, threaded rod 12 bottom is fixedly installed with driven gear 13, driven gear 13 is rotatably installed on the top of bottom disc 1, driven gear 13 outer wall is engaged with driving gear 14, driving gear 14 bottom is fixedly installed on the drive end of micro motor 15, micro motor 15 is fixedly installed on the top of bottom disc 1 second telescopic column 4 inner wall is engaged with third telescopic column 5, third telescopic column 5 inner wall is engaged with fourth telescopic column 6, fourth telescopic column 6 top is fixedly installed with support column 8, support column 8 top is fixedly installed with support rod 17, support rod 17 is fixedly installed with cleaning ring 7 at the side end away from support column 8.

[0023] It should be noted that: cleaning ring 7 can clean the inner wall of transparent dust collecting box 2 with the telescopic movement of multi-stage telescopic column, reduce the accumulation of dust and debris on the inner wall of transparent dust collecting box 2, maintain the transparency of transparent dust collecting box 2, so as to improve the visual clarity of operator, help to accurately judge the shape and vertical angle of drilling.

[0024] Please refer to Figure 1 The utility model provides a kind of technical scheme: a return air trough drilling device, including fourth telescopic column 6 inner wall center place is fixedly installed with third telescopic rod 9, third telescopic rod 9 bottom is slidably installed with second telescopic rod 10, second telescopic rod 10 outer wall bottom is slidably installed with first telescopic rod 11, first telescopic rod 11 inner wall is slidably installed with threaded rod 12.

[0025] It should be noted that: drill bit is provided through multi-stage telescopic rod, when drill bit is deeply drilled, the cooperation of multi-stage telescopic rod makes drill bit can work in relatively closed space, reduces direct contact with external dust, so as to reduce the influence of dust on drilling operation.

[0026] Please refer to Figure 5 The utility model provides a kind of technical scheme: a return air trough drilling device, including bottom disc 1 top edge place is screw-mounted with transparent dust collecting box 2, transparent dust collecting box 2 top is screw-connected with cutting ring 21.

[0027] Please refer to Figure 6The utility model provides a technical scheme: a return air trough drilling device, fixed ring 27 is fixedly installed on the bottom of bottom disc 1, the side away from bottom disc 1 of fixed ring 27 is rotatably installed with connecting column no.

[0028] Need to explain is: the clamping piece 25 is connected with connecting column no. 22 and connecting rod 23 through connecting column no. 22, forms an effective clamping mechanism. When rotating ring 18 rotates, through the transmission of connecting rod 23 and connecting column no. 22, the clamping piece 25 can tightly hold drill bit, ensures that drill bit can drive the whole device to rotate, makes cutting ring 21 tightly clamp into rock slab.

[0029] Please refer to Figure 1 The utility model provides a technical scheme: a return air trough drilling device, the material of the side wall of cleaning ring 7 is rubber, and the rubber surface is coated with an anti-sticking coating.

[0030] Need to explain is: the rubber material has good elasticity and wear resistance, can ensure that cleaning ring 7 is not easy to be damaged when contacting with the inner wall of transparent dust collecting box 2, and can be closely fitted, and the anti-sticking coating enhances the cleaning effect, reduces the adhesion of dust and chippings on the surface of cleaning ring 7, so that the cleaning process is more smooth and efficient.

[0031] Please refer to Figure 5 The utility model provides a technical scheme: a return air trough drilling device, the material of cutting ring 21 is hard alloy, and a plurality of cutting teeth are arranged on the top of cutting ring 21.

[0032] Need to explain is: the hard alloy material has very high hardness and wear resistance, can ensure that cutting ring 21 keeps sharp during the drilling process, effectively cuts into rock slab.

[0033] Working principle: first, the drill bit is inserted into the device through the rotating ring 18, at this time the rotating ring 18 is manually tightened, the rotation of the rotating ring 18 will drive the connecting rod 23, and then make the clamp 25 clamp the drill bit, ensure the drill bit is firmly fixed on the device, at this time start the drill bit, the whole device will rotate, when the cutting ring 21 contacts the top rock plate, continue to rotate until the cutting ring 21 is clamped into the rock plate, at this time reverse the rotating ring 18, make the clamp 25 loose the drill bit, then start the micro motor 15 reciprocating rotation, so that the driving gear 14 drives the driven gear 13 meshing rotation, the threaded rod 12 at the top of the driven gear 13 drives the secondary telescopic column 4 to extend, at the same time the secondary telescopic column 4 rises, the telescopic gear 19 engages with the rack 16, so that the tertiary telescopic column 5 and the quaternary telescopic column 6 can extend at the same time, forming a multi-stage telescopic structure, with the telescopic movement of the multi-stage telescopic rod, the cleaning ring 7 installed at the top will move, clean the inner wall of the transparent dust collecting box 2, keep the transparent dust collecting box 2 clean and transparent, avoid the gray layer shielding the operator's vision, at this time the operator can accurately judge the shape and vertical angle of the drilling, so as to improve the accuracy and safety of the drilling operation.

Claims

1. A return air chute drilling apparatus comprising a base pan (1) characterised in that: The bottom plate (1) top center fixed installation has a first telescopic column (3), the first telescopic column (3) inner wall fixed installation has a rack (16), the rack (16) meshing connection has a telescopic gear (19), the telescopic gear (19) side wall rotationally installed with support (20), the support (20) away from telescopic gear (19) one end fixed installation has a second telescopic column (4), the second telescopic column (4) bottom screw connection has a threaded rod (12), the threaded rod (12) bottom fixed installation has a driven gear (13), the driven gear (13) rotationally installed in the top of bottom plate (1), the driven gear (13) outer wall meshing connection has a driving gear (14), the driving gear (14) bottom fixed installation is in the drive end of micro motor (15), the micro motor (15) fixed installation is in the top of bottom plate (1) the second telescopic column (4) inner wall meshing connection has a third telescopic column (5), the third telescopic column (5) inner wall meshing connection has a fourth telescopic column (6), the fourth telescopic column (6) top fixed installation has a support column (8), the support column (8) top fixed installation has a support rod (17), the support rod (17) away from the side end fixed installation of support column (8) has a cleaning ring (7).

2. A return air chute drilling apparatus as claimed in claim 1 wherein: The fourth telescopic column (6) inner wall center fixed installation has a third telescopic rod (9), the third telescopic rod (9) bottom sliding installation has a second telescopic rod (10), the second telescopic rod (10) outer wall bottom sliding installation has a first telescopic rod (11), the first telescopic rod (11) inner wall sliding installation has a threaded rod (12).

3. A return air chute drilling apparatus as claimed in claim 2 wherein: The bottom plate (1) top edge thread installation has a transparent dust collection box (2), the transparent dust collection box (2) top screw connection has a cutting ring (21).

4. A return air chute drilling apparatus as claimed in claim 1 wherein: The bottom plate (1) bottom fixed installation has a fixed ring (27), the fixed ring (27) away from the one side rotationally installed with connecting column one (22) of bottom plate (1), the connecting column one (22) outer wall fixed installation is in the connecting hole (26) inner wall of the end opening of clamping piece (25), the connecting column one (22) away from the one end fixed installation of clamping piece (25) has a connecting rod (23), the connecting rod (23) away from the one end fixed installation of connecting column one (22) has a connecting column two (24), the connecting column two (24) end rotationally installed with rotating ring (18).

5. A return air chute drilling apparatus as claimed in claim 1 wherein: The material of the side wall of the cleaning ring (7) is rubber, and an anti-sticking coating is brushed on the surface of the rubber.

6. A return air chute drilling apparatus as claimed in claim 3 wherein: The material of the cutting ring (21) is hard alloy, and a plurality of cutting teeth are formed in the top of the cutting ring (21).

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