Hydraulic rotary drilling machine and control method thereof

Abstract

The present invention relates to a hydraulic rotary drilling machine and a control method thereof, belonging to the technical field of mechanical equipment, including a platform frame, a plurality of cutting head assemblies are arranged at the lower end of the platform frame, a reducer is arranged between the cutting head assembly and the platform frame and is connected to the cutting head assembly by spline shaft nesting transmission, a pair of scraper frames which are distributed in a mirror-symmetrical manner on the left and right and are bolted to the lower end of the platform frame are arranged at the rear end of the cutting head assembly, and a grab bucket assembly which is movably inserted and sleeved with the platform frame is arranged at the upper end of the platform frame. It has the characteristics of compact structure, convenient disassembly, good operation stability and long service life. It solves the problem that a base cannot be built on a mountain. It improves the stability of drilling operation, reduces shaking caused by high-speed operation, and avoids jamming and drill back phenomena.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, and in particular to a hydraulic rotary drilling machine and a control method thereof. Background Art

[0002] Open-pit and mountain field large-diameter foundation pit excavation generally adopts manual excavation or blasting, which also has the disadvantages of great safety hazards. Roadheaders, also known as excavators, are widely used in mining and highway and railway tunneling.

[0003] The rotary drilling rig is a comprehensive drilling rig that can be used in a variety of substrates and has the characteristics of fast hole-making speed, less pollution, and strong mobility. The short spiral drill bit can be used for dry digging, and the rotary drill bit can also be used for wet digging with mud wall protection. The rotary drilling rig can be used with a hammer to break the hard stratum and then dig holes. If it is used with an enlarged head drill, the hole can be enlarged at the bottom of the hole. Summary of the invention

[0004] The present invention mainly solves the shortcomings of poor operating stability and short service life in the prior art, and provides a hydraulic rotary drilling machine and a control method thereof, which has the characteristics of compact structure, convenient disassembly, good operating stability and long service life. It solves the problem that a base cannot be built on a mountain. It improves the stability of drilling operation, reduces shaking caused by high-speed operation, and avoids jamming and drill back.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0006] A hydraulic rotary drilling rig comprises a platform frame, a plurality of cutting head assemblies are arranged at the lower end of the platform frame, a reducer is arranged between the cutting head assemblies and the platform frame and is spline-shaft nested transmission connected to the cutting head assemblies, a pair of scraper frames are arranged at the rear end of the cutting head assemblies and are distributed in a left-right mirror-symmetrical manner and are bolted to the lower end of the platform frame, and a grab bucket assembly is arranged at the upper end of the platform frame and is movably inserted and sleeved with the platform frame. The platform frame includes a lower fixed plate, a slewing frame is provided at the lower end of the lower fixed plate, a hydraulic slewing motor which is gear-engaged with the slewing frame is provided at the lower end of the slewing frame, a slewing mounting seat is provided between the hydraulic slewing motor and the slewing frame, a slewing telescopic oil cylinder is provided on the side of the hydraulic slewing motor, a slewing telescopic oil cylinder support which is bolted to the slewing frame and pin-connected to the slewing telescopic oil cylinder is provided between the rear end of the slewing telescopic oil cylinder and the slewing frame, a cutting head tray which is bolted to the slewing frame and pin-connected to the slewing telescopic oil cylinder is provided between the front end of the slewing telescopic oil cylinder and the slewing frame, and the cutting head tray is bolted and fixed to the reducer.

[0007] Preferably, an upper fixed plate is provided at the upper end of the lower fixed plate, and a plurality of guide posts are provided on the lower fixed plate, which are distributed in an annular shape with equal intervals and extend from the upper end of the upper fixed plate. A guide sleeve which is sleeved with the guide post is provided between the guide post and the upper fixed plate. The lower end of the guide post is flange-bolted to the lower end of the lower fixed plate, and the guide post is movably nested with the upper fixed plate. A feed cylinder which is hinged to the lower fixed plate and flange-fixed to the upper fixed plate is provided between the two guide posts.

[0008] Preferably, the lower fixed plate is provided with a feed cylinder support which is flange-bolted to the lower fixed plate and pin-connected to the feed cylinder, and the lower fixed plate and the upper fixed plate are both provided with a plurality of supporting cylinders which are distributed in an annular manner with equal intervals and extend from the outer walls of the lower fixed plate and the upper fixed plate.

[0009] Preferably, the slewing frame includes a driving gear plate, a driven gear meshing with the driving gear plate is provided at the upper end of the hydraulic slewing motor, a slewing plate bolted and fixed to the cutting head tray is provided between the driving gear plate and the cutting head tray, the slewing plate is bolted and fixed to the slewing mounting seat and the slewing telescopic cylinder support, and a fixed bearing plate welded and nested with the driving gear plate and bolted to the slewing plate is provided between the slewing plate and the driving gear plate.

[0010] Preferably, the scraper frame includes a pair of grab plates, the upper ends of the grab plates are provided with lifting ear seats, a grab frame is provided between the lifting ear seats and the grab plates, and the grab frame is provided with a grab opening and closing cylinder which is pin-connected to the lifting ear seats and hinged to the scraper frame.

[0011] Preferably, the cutting head assembly comprises a cutting head body, the cutting head body is provided with an internal spline hole which is integrated with the cutting head body and is plug-inly connected with the reducer in a retaining ring type limiting manner, the outer circular end face of the cutting head body is provided with a plurality of cutting heads which are spirally distributed at equal intervals, one side end face of the cutting head body is provided with a gear ring disk which is connected with the internal spline hole and is integrated with the cutting head body, and the upper and outer circular tooth surfaces of the gear ring disk are provided with a plurality of diamond composite plates which are fixedly connected to the gear ring disk by welding.

[0012] Preferably, a pick seat is provided between the cutting head and the cutting head body, the pick seat and the gear ring disk are inclined at an angle of 5 to 10 degrees, and the pick seat and the cutting head are coaxially integrated structures.

[0013] Preferably, the scraper frame includes a scraper, a scraper bracket is provided between the scraper and the rotary frame, and a scraper telescopic cylinder is provided between the scraper bracket and the scraper.

[0014] Preferably, the control method of the hydraulic rotary drilling machine comprises the following operating steps:

[0015] Step 1: The platform frame moves up and down through a pair of cutting head assemblies on the reducer that moves the upper and lower rotating columns. When the platform frame reaches the drilling position, the supporting cylinder is stretched to fix the platform frame, and then the cutting head assembly is drilled by the reducer through the rotational power.

[0016] Step 2: While the cutting head assembly is rotating and drilling, the platform frame uses a revolving drive to drive the scraper frame to achieve an automatic cleaning function.

[0017] Step 3: Then the winch is used to drive the wire to retract and release the grab assembly for cleaning. The grab plates are opened and closed by the extension and retraction of the grab opening and closing cylinder to achieve the grabbing process of the two grab plates.

[0018] Step 4: After the cutting head assembly completes drilling at the current depth, the supporting cylinder contracts, and then the rotating column extends downward to drive the cutting head assembly at the lower end of the platform frame to perform deeper drilling operations.

[0019] Preferably, the drilling diameter of the cutting head assembly is controlled by the extension and retraction of the rotary telescopic cylinder. When the cutting head assembly is drilling, the supporting cylinder on the upper fixed plate is stretched and fixed, and the supporting cylinder on the lower fixed plate is contracted. At this time, the feed cylinder stretches and drives the lower fixed plate to move downward along the guide column.

[0020] The present invention can achieve the following effects:

[0021] The present invention provides a hydraulic rotary drilling machine and a control method thereof, which, compared with the prior art, has the characteristics of compact structure, convenient disassembly, good operation stability and long service life. It solves the problem that a base cannot be built on a mountain. It improves the stability of drilling operation, reduces shaking caused by high-speed operation, and avoids jamming and drill backing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a side structural schematic diagram of the present invention.

[0023] Figure 2 It is a rear view structural schematic diagram of the present invention.

[0024] Figure 3 It is a schematic diagram of the top structure of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the platform frame of the present invention.

[0026] Figure 5 It is a structural sectional view of the platform frame of the present invention.

[0027] Figure 6 It is a structural schematic diagram of the cutting head assembly of the present invention.

[0028] In the figure: scraper frame 1, platform frame 2, grab assembly 3, reducer 4, cutting head assembly 5, grab frame 6, lifting ear seat 7, grab opening and closing cylinder 8, grab plate 9, scraper bracket 10, scraper telescopic cylinder 11, scraper 12, supporting cylinder 13, lower fixed plate 14, upper fixed plate 15, guide column 16, rotary frame 17, feed cylinder 18, rotary telescopic cylinder 19, rotary mounting seat 20, hydraulic rotary motor 21, guide sleeve 22, feed cylinder support 23, driven gear 24, rotary telescopic cylinder support 25, driving gear plate 26, fixed bearing plate 27, rotary plate 28, cutting head tray 29, gear ring plate 30, inner spline hole 31, diamond composite plate 32, cutting head body 33, cutting head 34, cutting tooth seat 35. DETAILED DESCRIPTION

[0029] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0030] Example: Figure 1-6 As shown, a hydraulic rotary drilling machine includes a platform frame 2, and a pair of cutting head assemblies 5 are arranged at the lower end of the platform frame 2 in mirror symmetry. The cutting head assembly 5 includes a cutting head body 33, and an inner spline hole 31 is arranged in the cutting head body 33, which is integrated with the cutting head body 33 and connected with the reducer 4-phase clamp ring type limit plug-in nest. The outer circular end surface of the cutting head body 33 is provided with 39 cutting heads 34 distributed in a spiral shape with equal spacing. A pick seat 35 is arranged between the cutting head 34 and the cutting head body 33. The pick seat 35 and the ring gear disk 30 are inclined at an angle of 8 degrees, and the pick seat 35 and the cutting head 34 are coaxially integrated. A ring gear disk 30 is connected to the inner spline hole 31 and integrated with the cutting head body 33 on one side of the cutting head body 33, and 40 diamond composite plates 32 are welded and fixedly connected to the ring gear disk 30 on the end surface and outer circular tooth surface of the ring gear disk 30. A reducer 4 connected to the cutting head assembly 5 by spline shaft nesting transmission is provided between the cutting head assembly 5 and the platform frame 2. A pair of scraper frames 1 are provided at the rear end of the cutting head assembly 5, which are distributed in a left-right mirror-symmetrical manner and bolted to the lower end of the platform frame 2. The scraper frame 1 includes a scraper 12, a scraper bracket 10 is provided between the scraper 12 and the rotary frame 17, and a scraper telescopic oil cylinder 11 is provided between the scraper bracket 10 and the scraper 12. A grab assembly 3 movably inserted and sleeved with the platform frame 2 is provided at the upper end of the platform frame 2. The grab assembly 3 includes a pair of grab plates 9, a lifting ear seat 7 is provided at the upper end of the grab plate 9, a grab frame 6 is provided between the lifting ear seat 7 and the grab plate 9, and a grab opening and closing oil cylinder 8 is provided in the grab frame 6, which is pin-connected with the lifting ear seat 7 and hinged with the scraper frame 1.

[0031] The platform frame 2 includes a lower fixed plate 14, a slewing frame 17 is provided at the lower end of the lower fixed plate 14, the slewing frame 17 includes a driving gear plate 26, a driven gear 24 is provided at the upper end of the hydraulic slewing motor 21, and a slewing plate 28 is bolted and fixed to the cutting head tray 29 between the driving gear plate 26 and the cutting head tray 29, the slewing plate 28 is bolted and fixed to the slewing mounting seat 20 and the slewing telescopic cylinder support 25, and a fixed bearing plate 27 is welded and nested with the driving gear plate 26 and bolted to the slewing plate 28 between the slewing plate 28 and the driving gear plate 26. A hydraulic rotary motor 21 which is gear-engaged with the rotary frame 17 is provided at the lower end of the rotary frame 17, a rotary mounting seat 20 is provided between the hydraulic rotary motor 21 and the rotary frame 17, a rotary telescopic cylinder 19 is provided on the side of the hydraulic rotary motor 21, a rotary telescopic cylinder support 25 which is bolted to the rotary frame 17 and pin-connected to the rotary telescopic cylinder 19 is provided between the rear end of the rotary telescopic cylinder 19 and the rotary frame 17, a cutting head pallet 29 which is bolted to the rotary frame 17 and pin-connected to the rotary telescopic cylinder 19 is provided between the front end of the rotary telescopic cylinder 19 and the rotary frame 17, and the cutting head pallet 29 is bolted and fixed to the reducer 4. An upper fixed plate 15 is provided at the upper end of the lower fixed plate 14. The lower fixed plate 14 is provided with four guide posts 16 which are distributed in an annular manner with equal spacing and extend from the upper end of the upper fixed plate 15. A guide sleeve 22 which is sleeved with the guide post 16 is provided between the guide post 16 and the upper fixed plate 15. The lower end of the guide post 16 is connected to the lower end of the lower fixed plate 14 by flange bolts. The guide post 16 is movably nested with the upper fixed plate 15. A feed oil cylinder 18 which is hinged to the lower fixed plate 14 and fixedly connected to the upper fixed plate 15 by flange is provided between the two guide posts 16. A feed oil cylinder support 23 which is connected to the lower fixed plate 14 by flange bolts and connected to the feed oil cylinder 18 by pins is provided in the lower fixed plate 14. Four support oil cylinders 13 which are distributed in an annular manner with equal spacing and extend from the outer walls of the lower fixed plate 14 and the upper fixed plate 15 are provided on the lower fixed plate 14 and the upper fixed plate 15.

[0032] The control method of the hydraulic rotary drilling rig includes the following operating steps:

[0033] Step 1: The platform frame 2 moves up and down through a pair of cutting head assemblies 5 on the reducer 4 that moves the upper and lower rotating columns. When the platform frame 2 reaches the drilling position, the support cylinder 13 stretches to fix the platform frame 2, and then the cutting head assembly 5 is drilled by the reducer 4 through the rotational power. The drilling aperture of the cutting head assembly 5 is controlled by the extension and contraction of the rotary telescopic cylinder 19. When the cutting head assembly 5 is drilling, the support cylinder 13 on the upper fixed plate 15 is stretched and fixed, and the support cylinder 13 on the lower fixed plate 14 is contracted. At this time, the feed cylinder 18 stretches to drive the lower fixed plate 14 to move downward along the guide column 16.

[0034] Step 2: While the cutting head assembly 5 is rotating to drill, the platform frame 2 uses revolution to drive the scraper frame 1 to achieve an automatic cleaning function.

[0035] Step 3: Then, the winch is used to drive the steel wire to be retracted and released to drive the grab bucket assembly 3 for cleaning, and the grab bucket plates 9 are opened and closed by the expansion and contraction of the grab bucket opening and closing cylinder 8 to realize the grabbing process of the two grab bucket plates 9.

[0036] Step 4: After the cutting head assembly 5 completes drilling at the current depth, the supporting cylinder 13 contracts, and then the rotating column extends downward to drive the cutting head assembly 5 at the lower end of the platform frame 2 to perform a deeper drilling operation.

[0037] In summary, the hydraulic rotary drilling machine and the control method thereof have the characteristics of compact structure, convenient disassembly, good operation stability and long service life. The problem that a base cannot be built on a mountain is solved. The stability of drilling operation is improved, the shaking caused by high-speed operation is reduced, and the jamming and drill back phenomena are avoided.

[0038] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A hydraulic rotary drilling machine, characterized in that: The invention comprises a platform frame (2), wherein a plurality of cutting head assemblies (5) are arranged at the lower end of the platform frame (2), a reducer (4) is arranged between the cutting head assembly (5) and the platform frame (2) and is connected to the cutting head assembly (5) in a spline shaft-type nested transmission manner, a pair of scraper frames (1) are arranged at the rear end of the cutting head assembly (5) and are distributed in a left-right mirror-symmetrical manner and are bolted to the lower end of the platform frame (2), and a grab bucket assembly (3) is arranged at the upper end of the platform frame (2) and is movably inserted and sleeved with the platform frame (2); the platform frame (2) comprises a lower fixed plate (14), a rotating frame (17) is arranged at the lower end of the lower fixed plate (14), and a gear-type gear engaged with the rotating frame (17) is arranged at the lower end of the rotating frame (17). A hydraulic rotary motor (21) with a wheel meshing transmission, a rotary mounting seat (20) is provided between the hydraulic rotary motor (21) and the rotary frame (17), a rotary telescopic oil cylinder (19) is provided on the side of the hydraulic rotary motor (21), a rotary telescopic oil cylinder support (25) is provided between the rear end of the rotary telescopic oil cylinder (19) and the rotary frame (17), the rotary telescopic oil cylinder support (25) is bolted to the rotary frame (17) and pin-connected to the rotary telescopic oil cylinder (19), a cutting head tray (29) is bolted to the rotary frame (17) and pin-connected to the rotary telescopic oil cylinder (19) between the front end of the rotary telescopic oil cylinder (19) and the rotary frame (17), and the cutting head tray (29) is bolted to the reducer (4) and fixed; An upper fixed plate (15) is provided at the upper end of the lower fixed plate (14), a plurality of guide posts (16) are provided on the lower fixed plate (14) and are distributed in an annular manner at equal intervals and extend from the upper end of the upper fixed plate (15), a guide shaft sleeve (22) sleeved with the guide post (16) is provided between the guide post (16) and the upper fixed plate (15), the lower end of the guide post (16) is flange-boltedly connected to the lower end of the lower fixed plate (14), the guide post (16) is movably nested with the upper fixed plate (15), and a feed oil cylinder (18) is provided between the two guide posts (16) and is hinged to the lower fixed plate (14) and flange-fixedly connected to the upper fixed plate (15); The lower fixed plate (14) is provided with a feed cylinder support (23) which is flange-bolt-connected to the lower fixed plate (14) and pin-connected to the feed cylinder (18); the lower fixed plate (14) and the upper fixed plate (15) are both provided with a plurality of support cylinders (13) which are distributed in an annular manner at equal intervals and extend from the outer walls of the lower fixed plate (14) and the upper fixed plate (15); The grab assembly (3) comprises a pair of grab plates (9), the upper ends of the grab plates (9) are provided with lifting ear seats (7), a grab frame (6) is provided between the lifting ear seats (7) and the grab plates (9), and a grab opening and closing cylinder (8) is provided in the grab frame (6) which is pin-connected to the lifting ear seats (7) and hinged to the scraper frame (1).

2. The hydraulic rotary drilling machine according to claim 1, characterized in that: The slewing frame (17) comprises a driving gear plate (26); a driven gear (24) meshing with the driving gear plate (26) is provided at the upper end of the hydraulic slewing motor (21); a slewing plate (28) connected and fixed to the cutting head tray (29) by bolts is provided between the driving gear plate (26) and the cutting head tray (29); the slewing plate (28) is connected and fixed to the slewing mounting seat (20) and the slewing telescopic oil cylinder support (25) by bolts; and a fixed bearing plate (27) connected to the driving gear plate (26) by welding and nesting and fixed to the slewing plate (28) by bolts is provided between the slewing plate (28) and the driving gear plate (26).

3. The hydraulic rotary drilling machine according to claim 1, characterized in that: The cutting head assembly (5) comprises a cutting head body (33), wherein the cutting head body (33) is provided with an internal spline hole (31) which is integrated with the cutting head body (33) and is engaged with the reducer (4) in a snap ring-type limiting insert-and-socket manner, and the outer circular end surface of the cutting head body (33) is provided with a plurality of cutting heads (34) which are distributed in a spiral shape at equal intervals, and a gear ring disk (30) which is connected to the internal spline hole (31) and is integrated with the cutting head body (33) is provided on one end surface of the cutting head body (33), and a plurality of diamond composite sheets (32) which are welded and fixedly connected to the gear ring disk (30) are provided on the upper and outer circular tooth surfaces of the end surface of the gear ring disk (30).

4. The hydraulic rotary drilling machine according to claim 3, characterized in that: A pick seat (35) is provided between the cutting head (34) and the cutting head body (33); the pick seat (35) and the gear ring disk (30) are inclined at an angle of 5 to 10 degrees; the pick seat (35) and the cutting head (34) are coaxially integrated structures.

5. The hydraulic rotary drilling machine according to claim 1, characterized in that: The scraper frame (1) comprises a scraper (12), a scraper bracket (10) is provided between the scraper (12) and the rotary frame (17), and a scraper telescopic cylinder (11) is provided between the scraper bracket (10) and the scraper (12).

6. A control method for a hydraulic rotary drilling machine according to claim 1, characterized in that The steps are as follows: The first step: the platform frame (2) moves up and down through a pair of cutting head assemblies (5) on a reducer (4) that moves the upper and lower rotating columns. When the platform frame (2) reaches the drilling position, the supporting oil cylinder (13) stretches to fix the platform frame (2), and then the cutting head assembly (5) drills through the rotary power of the reducer (4); Step 2: while the cutting head assembly (5) is rotating to drill, the platform frame (2) uses a revolution to drive the scraper frame (1) to achieve an automatic cleaning function; Step 3: Then, the winch drives the steel wire to be retracted and released to drive the grab bucket assembly (3) to clean, and the grab bucket plate (9) realizes the grabbing process of opening and closing the two grab bucket plates (9) through the extension and retraction of the grab bucket opening and closing cylinder (8); Step 4: After the cutting head assembly (5) completes drilling at the current depth, the supporting oil cylinder (13) contracts, and then the rotating column extends downward to drive the cutting head assembly (5) at the lower end of the platform frame (2) to perform a deeper drilling operation.

7. The control method of the hydraulic rotary drilling machine according to claim 6, characterized in that: The drilling hole diameter of the cutting head assembly (5) is controlled by the extension and retraction of the rotary telescopic oil cylinder (19). When the cutting head assembly (5) is drilling, the supporting oil cylinder (13) on the upper fixed plate (15) is stretched and fixed, and the supporting oil cylinder (13) on the lower fixed plate (14) is retracted. At this time, the feed oil cylinder (18) is stretched to drive the lower fixed plate (14) to move downward along the guide column (16).

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