A modular cluster type hydraulic impact rock drilling tool and working method thereof

Abstract

The present invention relates to a modular clustered hydraulic impact rock drilling tool and a working method thereof, wherein the modular clustered hydraulic impact rock drilling tool comprises a head cover module, the lower part of the head cover module is detachably connected with a rotary head module, the lower end of the rotary head module is detachably connected with a cluster inner module and a cluster outer module, and the cluster inner module and the cluster outer module are both connected with a plurality of hydraulic impact sub-hammers for impact rock drilling; the upper part of the head cover module is provided with a barrel for collecting rock debris and a baffle connected to the discharge end of the barrel and can be opened, and the upper end of the barrel is provided with an open opening for feeding rock debris; the lower end of the hydraulic impact sub-hammer is provided with a high-pressure exhaust hole; after the present invention is disassembled, the weight of each module is no more than 1.8 tons, which is convenient for transportation to a designated location by a cableway, and the rock debris generated during the rock drilling process is blown into the barrel by high-pressure gas to achieve a better slag discharge effect, and the vibration caused by the impact force can be reduced by installing multiple groups of shock-absorbing springs.

Description

Technical Field

[0001] The invention relates to the field of rock drilling devices, and in particular to a modular clustered hydraulic impact rock drilling tool and a working method thereof. Background Art

[0002] The construction of large-diameter bored pile foundations (diameter greater than or equal to 1.2m) for UHV transmission lines in mountainous areas often adopts manual excavation or non-circulating rotary drilling methods. However, these excavation methods have the disadvantages of high operation risks or inability to excavate hard rock and low drilling efficiency. Clustered down-the-hole hammers that use impact rotary rock breaking can achieve efficient hole formation, but traditional clustered down-the-hole hammers use high-pressure air as impact power, which consumes a lot of energy and has high construction costs. They require large air compressor units, and the number of air compressors is large and difficult to transport up the mountain.

[0003] In addition, the traditional cluster down-the-hole hammer is inseparable and heavy, and cannot be transported by 2-ton cableway. Therefore, the traditional cluster down-the-hole hammer needs to be fully disassembled and transported up the mountain, which makes the disassembly and assembly complicated and greatly increases the workload.

[0004] At present, a Chinese patent "A new type of disc-type rock drilling rig" has been retrieved, with publication number CN210598844U. The drilling rig includes a propulsion mechanism and a base frame, a gas cap is hinged on the base frame, and a pull rod with adjustable length is hinged on the gas cap. The propulsion mechanism includes a lead screw and a guide rail arranged on the outside of the lead screw. A slide plate of a heavy rock drill is slidably connected to one side of the guide rail. A transmission nut is fixed on the slide plate, and the transmission nut is threadedly installed on the lead screw. A driving device is connected to the lower end of the lead screw. A 360° rotating mechanism of a propeller for adjusting the angle of the propulsion mechanism is installed between the guide rail and the gas cap. Although the entire structure is flexible and practical, simple and solid in structure, and can realize drilling operations at any angle, it can flexibly cope with the rock drilling needs of tunnel excavation and roof anchoring, but the equipment is huge and the rock drill has an integrated structure and cannot be disassembled, which is inconvenient to use in cableway transportation. Summary of the invention

[0005] The object of the present invention is to provide a modular clustered hydraulic impact rock drilling tool and a working method thereof, which can solve the problems of heavy weight and structural redundancy of existing integrated drilling tools and meet the needs of cableway transportation.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The present invention discloses a modular cluster hydraulic impact rock drilling tool, characterized in that it comprises a head cover module, the lower part of which is detachably connected to a rotary head module, the lower end of which is detachably connected to a cluster inner module and a cluster outer module, and the cluster inner module and the cluster outer module are both connected to a plurality of hydraulic impact sub-hammers for impact rock drilling;

[0008] The upper part of the head cover module is provided with a barrel for collecting rock slag and a baffle connected to the discharge end of the barrel and capable of being opened, and the upper end of the barrel is provided with an open opening for feeding rock slag;

[0009] A high-pressure exhaust hole is provided at the lower end of the hydraulic impact sub-hammer, and the high-pressure exhaust hole can blow up the rock debris at the bottom of the rock drilling hole and drop it into the barrel when the high-pressure gas is discharged.

[0010] Furthermore, the upper part of the baffle is fixedly connected with a rotating shaft capable of driving the baffle to swing, and the rotating shaft is rotatably hinged at the top of the barrel. When the rotating shaft rotates to the first position, the discharge end of the barrel is opened, and the rock debris collected in the barrel can be discharged. When the rotating shaft rotates to the second position, the discharge end of the barrel is closed, and the barrel can collect the rock debris.

[0011] Furthermore, the head cover module is provided with two groups of adjacent fan-shaped barrels, both of which include a base plate and two partitions vertically connected to the base plate, the angle formed by the two partitions is an obtuse angle, the baffle is arc-shaped, the two ends of the rotating shaft are connected to the upper corners of the baffle, and the baffle is covered on the outer ends of the two partitions when it is in the second station, so as to achieve the closure of the discharge end of the barrel; the two groups of barrels share one partition, and the two groups of barrels form a fan-shaped notch on the head cover module, and interfaces for high-pressure air circuits and hydraulic pipelines are arranged at the notch; when the baffles of the two barrels are in the second station, they form a cylindrical outer arc surface of the head cover module.

[0012] Furthermore, a first bolt insertion hole is provided on the base plate, a second bolt insertion hole is provided at the lower part of the baffle, and a clamping rod which can be correspondingly inserted into the first bolt insertion hole and the second bolt insertion hole is provided on the lower surface of the base plate, and the clamping rod is connected to the pull ring.

[0013] Furthermore, a dustproof cylinder is connected between the head cover module and the swivel head module, and the swivel head module includes a power head assembly, and the power head assembly is fixed to the lower side of the dustproof cylinder by bolts. A roller swivel bearing assembly is arranged at the bottom of the power head assembly, and a floating frame is arranged at the bottom of the roller swivel bearing assembly, and a base frame is arranged at the bottom of the floating frame, and a plurality of shock-absorbing shafts are arranged in a ring inside the floating frame, and shock-absorbing springs are sleeved on the plurality of shock-absorbing shafts and between the base frame, and the plurality of shock-absorbing shafts passing through the ends of the base frame are provided with cotter pins, and the plurality of cotter pins correspond to each other one by one with the plurality of shock-absorbing shafts to realize the limiting of the base frame.

[0014] Furthermore, the above-mentioned cluster inner module includes a rotating connecting frame, which is arranged at the bottom of the base frame, and a plurality of hydraulic impact sub-hammers are arranged in a ring around the center of the circle in the rotating connecting frame.

[0015] Furthermore, the above-mentioned clustered outer module includes an outer clustered drill bit mounting frame, which is sleeved on the lower side of the rotating connecting frame, and a plurality of the hydraulic impact sub-hammers are arranged in a ring around the center of the circle in the outer clustered drill bit mounting frame.

[0016] Furthermore, the above-mentioned several hydraulic impact sub-hammers are respectively connected to the rotating connecting frame and the external cluster drill bit mounting frame by bolts, and the hydraulic impact sub-hammer includes a breaking hammer head and a hydraulic impact device for driving the movement of the breaking hammer head and a hammer front body for limiting and guiding the reciprocating telescopic movement of the breaking hammer head, the hydraulic impact device is connected to the bolts, an air inlet hole is opened on one side of the hammer front body, and the exhaust hole communicated with the air inlet hole is opened at the bottom of the breaking hammer head.

[0017] Furthermore, the above-mentioned swivel head module also includes three hydraulic power swivel heads arranged on the top of the power head assembly and a gear ring with internal teeth arranged inside the roller swivel bearing assembly. The output shafts of the three hydraulic power swivel heads are all connected with gears, and the three gears are meshed with the internal teeth of the gear ring to provide rotational power to the roller swivel bearing assembly.

[0018] The working method of the modular cluster hydraulic impact rock drilling tool of the present invention is characterized in that the three hydraulic power rotary heads inside the rotary head module drive the cluster inner module and the cluster outer module to rotate, and the crushing hammer heads distributed on different circumferences can realize uniform crushing of the rock layer, and at the same time, the hydraulic impact device on each crushing hammer head provides impact energy for the crushing hammer head, replacing the compressed air drive, reducing the use of the air compressor; in the rock drilling process, the rock debris at the bottom of the rock drilling hole is blown up by the high-pressure gas discharged from the high-pressure exhaust hole, and some of the lighter rock debris is blown out of the rock drilling hole, while some of the heavier rock debris is blown up and falls into the barrel through the open mouth;

[0019] When slag discharge is required, the rock drilling tool is lifted to the outside of the rock drilling hole, and the baffle is flipped open to allow the rock slag in the barrel to be discharged from the discharge end of the barrel.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention utilizes three hydraulically powered rotary heads in the rotary head module to drive the drill bit to rotate as a whole, so that the crushing hammer heads distributed on different circumferences can achieve uniform contact with the rock formation, and at the same time, the rock formation is crushed by using hydraulic impact sub-hammers; hydraulic pressure replaces compressed air drive, reducing the use of air compressors, reducing energy consumption and improving work efficiency.

[0022] 2. The modular component design of the cluster drill outer module, cluster drill inner module, rotary head module and head cover module, which are detachably connected to each other, reduces redundant structures, and the weight of each module is no more than 1.8 tons, which is convenient for transportation to the designated location by cableway; and the present invention can be used for mountain operations in environments without good roads, while the traditional cluster impactor is an integrated structure, which cannot be disassembled and has limited use.

[0023] 3. At the same time, when the present invention is working, the high-pressure gas output device is used to discharge the rock slag generated during the rock drilling process through the high-pressure exhaust hole at the bottom of the breaker hammer head, so as to blow the rock slag out of the rock drilling hole or collect it in the barrel, so as to achieve a better slag discharge effect, and at the same time, it can prevent the rock slag from accumulating at the bottom of the rock drilling hole to cause repeated crushing and drill stuck, drill buried and other in-hole accidents.

[0024] 4. Impact rock drilling tools generally generate huge impact force during the drilling process, which is transmitted to the upper fixed structure by the drilling tool. The present invention achieves the purpose of buffering and shock absorption through the springs uniformly arranged circumferentially in the rotary head module. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 , 2 Schematic diagram of the three-dimensional structure of the present invention from different viewing angles;

[0027] Figure 3 It is a cross-sectional structural schematic diagram of the present invention;

[0028] Figure 4 yes Figure 1 A partial view of

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the head cover module of the present invention with the baffle plate turned over;

[0030] Figure 6 It is a three-dimensional structural schematic diagram of the rotary head module of the present invention;

[0031] Figure 7 It is a partial perspective structural diagram of the rotary head module of the present invention;

[0032] Figure 8 It is a schematic diagram of the rotating cross-section stereoscopic structure of the turret head module of the present invention;

[0033] Fig. 9It is a schematic diagram of the exploded structure of the rotary head module of the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the module in the cluster of the present invention;

[0035] Fig.11 It is a schematic diagram of the three-dimensional structure of the combination of the cluster inner module and the cluster outer module of the present invention;

[0036] Fig.12 It is a schematic diagram of the three-dimensional structure of the hydraulic impact hammer of the present invention;

[0037] Fig.13 It is a schematic diagram of the cross-sectional structure of the connection between the base plate, the clamping rod and the pull ring.

[0038] In the figure:

[0039] 1. Head cover module; 101. Open mouth; 102. Bottom plate; 103. Partition plate; 104. First bolt insertion hole; 105. High-pressure gas line interface; 106. Hydraulic line interface; 11. Cylinder; 12. Rotating shaft; 13. Baffle plate; 1301. Second bolt insertion hole; 14. Clamping rod; 15. Tension spring; 16. Pull ring; 17. Dustproof cylinder; 2. Swivel head module; 21. Power head assembly; 211. Hydraulic power swivel head; 212. Gear ring; 213. Gear; 22. Roller swivel bearing assembly; 23. Floating frame; 24. Bottom frame; 25 , rotary joint; 2501, fixed sleeve; 2502, rotating sleeve; 2503, first hydraulic interface; 2504, first high-pressure gas interface; 2505, second hydraulic interface; 2506, second high-pressure gas interface; 26, shock-absorbing shaft; 27, shock-absorbing spring; 28, cotter pin; 3, cluster inner module; 31, rotary connecting frame; 4, cluster outer module; 41, outer cluster drill bit mounting frame; 5, hydraulic impact sub-hammer; 51, crushing hammer head; 52, hammer front body; 53, bolt; 54, hydraulic impact device; 55, air inlet; 56, high-pressure exhaust hole. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0041] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0042] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figure 1-5 As shown, the modular cluster hydraulic impact rock drilling tool of the present invention comprises a head cover module 1, the lower part of the head cover module 1 is detachably connected to a rotary head module 2, a dustproof cylinder 17 is further connected between the head cover module 1 and the rotary head module 2, the lower end of the rotary head module 2 is detachably connected to a cluster inner module 3 and a cluster outer module 4, and a plurality of hydraulic impact sub-hammers 5 for impact rock drilling are connected to the cluster inner module 3 and the cluster outer module 4;

[0045] The upper part of the head cover module 1 is provided with a barrel 11 for collecting rock slag and a baffle 13 connected to the discharge end of the barrel 11 and capable of being opened. The upper end of the barrel 11 is provided with an open opening 101 for feeding rock slag;

[0046] A high-pressure exhaust hole 56 is provided at the lower end of the hydraulic impact sub-hammer 5 , and the high-pressure exhaust hole can blow up the rock debris at the bottom of the rock drilling hole and drop it into the barrel 11 when discharging high-pressure gas.

[0047] The above-mentioned detachable connection refers to connecting two modules (head cover module 1, swivel head module 2, cluster inner module 3 and cluster outer module 4) to each other by bolts.

[0048] During the rock drilling process, the rock debris at the bottom of the rock drilling hole is blown up by the high-pressure gas discharged from the high-pressure exhaust hole 56, and some of the lighter rock debris is blown out of the rock drilling hole, while some of the heavier rock debris is blown up and falls into the barrel 11 through the open mouth 101; when it is necessary to discharge the debris, the rock drilling tool is lifted to the outside of the rock drilling hole, and the baffle 13 is flipped open to allow the rock debris in the barrel to be discharged from the discharge end of the barrel.

[0049] Specifically, the upper part of the baffle 13 is fixedly connected with a rotating shaft 12 that can drive the baffle 13 to swing. The rotating shaft 12 is rotatably hinged at the top of the barrel 11. When the rotating shaft 12 rotates to the first position (the baffle 13 opens upward), the discharge end of the barrel 11 is opened, and the rock debris collected in the barrel 11 can be discharged. When the rotating shaft 12 rotates to the second position (the baffle 13 is downward, and the clamping rod 14 is used to bolt it closed), the discharge end of the barrel 11 is closed, and the barrel 11 can collect the rock debris. The rotating shaft 12 can be driven to swing by a motor, or a torsion spring can be installed on the rotating shaft so that the rotating shaft and the baffle have a tendency to swing upward and open, or the rotating shaft and the baffle do not have an automatic external driving force to flip them over, but are manually flipped up.

[0050] Specifically, the hood module 1 is provided with two groups of adjacent fan-shaped barrels 11, both groups of barrels 11 include a base plate 102 and two partitions 103 vertically connected to the base plate, the angle formed by the two partitions is an obtuse angle, the baffle 13 is arc-shaped, the two ends of the rotating shaft 12 are connected to the upper end corners of the baffle 13, and when the baffle 13 is in the second position, it covers the outer ends of the two partitions to achieve the closure of the discharge end of the barrel 11; the two groups of barrels 11 share one partition, and the two groups of barrels 11 form a fan-shaped notch on the hood module 1, and the interface 106 of the high-pressure gas circuit 105 and the hydraulic pipeline is arranged at the position of the notch; when the baffles 13 of the two barrels 11 are in the second position, they form a cylindrical outer arc surface of the hood module 1, and the hood module 1 as a whole is a cylinder with a fan-shaped notch.

[0051] In order to achieve the closure of the baffle at the opening position of the two partitions, a first bolt insertion hole 104 is provided on the above-mentioned base plate 102, and a second bolt insertion hole 1301 is provided at the lower part of the baffle 13. A clamping rod 14 that can be inserted into the first bolt insertion hole and the second bolt insertion hole is provided on the lower surface of the base plate. The clamping rod 14 is connected to the pull ring 16, and the clamping rod is equivalent to the role of a latch. When the clamping rod 14 is inserted into the first bolt insertion hole and the second bolt insertion hole, the lower part of the baffle 13 cannot be separated from the base plate, thereby achieving the closure of the baffle. The pull ring 16 is a handle for easy operation. During the rock drilling process, rock slag is blown into the barrel 11 by high-pressure gas. When the rock slag needs to be discharged, the rock drilling tool and the barrel 11 of the present application are lifted upward to the outside of the rock drilling hole, and the clamping rod 14 is pulled downward by the pull ring 16, and the clamping rod 14 is removed from the base plate 102. The first bolt plug hole 104 and the second bolt plug hole 1301 of the baffle 13 are disengaged, the baffle is flipped up, and the barrel 11 is shaken to discharge the rock slag from the barrel 11. When the baffle needs to be closed to collect the rock slag, the baffle is flipped down and closed, and the clamping rod 14 is inserted into the first bolt plug hole 104 on the base plate 102 and the second bolt plug hole 1301 of the baffle 13; in order to enable the clamping rod 14 to be better kept inserted in the first bolt plug hole 104 and the second bolt plug hole 1301, a rectangular frame is installed on the bottom surface of the base plate 102, the clamping rod 14 is connected in the rectangular frame, and a tensioning spring 15 is provided in the rectangular frame to push the clamping rod 14 into the first bolt plug hole 104 and the second bolt plug hole 1301, one end of the tensioning spring abuts on the baffle of the clamping rod 14, and the other end of the tensioning spring abuts on the lower inner surface of the rectangular frame.

[0052] like Figure 6-9As shown, the swivel head module 2 includes a power head assembly 21, which is fixed to the middle part of the dustproof cylinder 17 by bolts (the upper end of the dustproof cylinder 17 is fixedly connected to the lower part of the head cover module 1, and the diameter of the dustproof cylinder 17 is smaller than the diameter of the head cover module 1, so that the outer side of the dustproof cylinder 17 has space for setting the pull ring 16 and the clamping rod, and has space for the bolts that can be detachably connected between the installation modules), and a roller swivel bearing assembly 22 is installed at the bottom of the power head assembly 21. The power head assembly 21 includes a power head main body and three hydraulic power swivel heads 211 (hydraulic motors) arranged in an annular manner on the top of the power head main body. The bottom of the hydraulic power swivel head 211 is connected to a gear 213 driven to rotate by it. The roller swivel bearing assembly 22 includes a roller swivel bearing main body and a gear ring 212 with internal teeth located inside the roller swivel bearing main body, and each gear 213 is meshed with the internal teeth of the gear ring 212. Under the action, each gear 213 rotates, driving the gear ring 212 and the roller slewing bearing body to rotate. A floating frame 23 is installed at the bottom of the roller slewing bearing body through bolts. The base frame 24 is installed in the floating frame 23 through a shock-absorbing shaft 26 and a cotter pin 28. Thirty shock-absorbing shafts 26 are equidistantly installed around the center of the circle inside the floating frame 23. The ends of the shock-absorbing shafts 26 passing through the base frame 24 are all installed with cotter pins 28. Shock-absorbing springs 27 are sleeved between the shock-absorbing shafts 26 and the top of the base frame 24. During the rock drilling process, the three hydraulic power rotary heads 211 drive the three gears 213 to rotate and then drive the gear ring 212 with internal teeth to rotate. The rotation of the gear ring 212 drives the roller slewing bearing assembly 22 to rotate. The rotation of the roller slewing bearing assembly 22 drives the floating frame 23 and the base frame 24 to rotate. The purpose of buffering and shock reduction is achieved by the shock-absorbing spring 27 sleeved on the shock-absorbing shaft 26, which buffers and offsets the vibration and impact energy generated by the impact force of the hydraulic impact hammer 5 below.

[0053] like Figure 10-12 As shown, the modular clustered hydraulic impact rock drilling tool of the present invention is installed with a cluster inner module 3, which includes a rotating connecting frame 31. Three slots are spaced around the center of the bottom of the rotating connecting frame 31. The rotating connecting frame 31 is installed at the bottom of the base frame 24. Eight guide grooves are equidistantly opened on the outer wall of the rotating connecting frame 31 around the center of the circle. A hydraulic impact sub-hammer 5 is installed on the bottom slot of the rotating connecting frame 31. During the rock drilling process, the hydraulic impact sub-hammer 5 crushes the rock in the hole, and then the high-pressure gas output device such as an air pump is used to make the high-pressure gas blow the crushed rock debris into the barrel 11 through the six guide grooves opened on the outer wall of the rotating connecting frame 31.

[0054] The modular clustered hydraulic impact rock drilling tool of the present invention is installed with a clustered outer module 4, which includes an outer clustered drill bit mounting frame 41. Three slots are spaced around the center of the circle at the bottom of the outer clustered drill bit mounting frame 41. The outer clustered drill bit mounting frame 41 is installed on the outer side of the bottom of the rotating connecting frame 31. A hydraulic impact sub-hammer 5 is installed on the bottom slot of the outer clustered drill bit mounting frame 41. Eight guide grooves are equidistantly provided around the center of the circle at the corresponding positions of the outer wall of the outer clustered drill bit mounting frame 41 and the rotating connecting frame 31. During the rock drilling process, the three hydraulic impact sub-hammers 5 installed on the outer clustered drill bit mounting frame 41 and the three hydraulic impact sub-hammers 5 installed on the rotating connecting frame 31 are used in combination, so that the crushing hammer heads 51 distributed on different circumferences can achieve uniform contact with the rock formation and crush the rock formation.

[0055] like Fig.12 As shown, the hydraulic impact sub-hammer 5 installed in the modular cluster hydraulic impact rock drilling tool of the present invention includes a crushing hammer head 51, which is slidably connected in the hammer front body 52, and a hydraulic impact device 54 is installed on the top of the hammer front body 52. ​​The hydraulic impact device 54 is fixedly connected to the slots of the rotating connecting frame 31 and the outer cluster drill bit mounting frame 41 through bolts 53, and an air inlet hole 55 is opened on the hammer front body 52, and a high-pressure exhaust hole 56 communicating with the air inlet hole 55 is opened in the middle of the bottom of the crushing hammer head 51; the crushing hammer head 51 reciprocates in a straight line in the hammer front body 52 under the action of the hydraulic impact device 54, and the hydraulic The hydraulic impact device 54 is an existing component, which can realize the reciprocating linear motion of the breaker hammer 51 through hydraulic pressure. The impact force generated by the hydraulic impact device 54 is transmitted to the breaker hammer 51, so that the breaker hammer 51 performs an impact and crushing process on the rock formation under a great impact force, and drives the drill bit of the present invention to complete rock drilling through the drilling rig propulsion mechanism; when in use, high-pressure gas is introduced into the air inlet 55 of the hydraulic impact sub-hammer 5 through a high-pressure gas output device such as an air pump, and the high-pressure gas is then discharged from the high-pressure exhaust hole 56 at the bottom of the breaker hammer 51, so as to blow up the rock slag generated during the rock drilling process, and blow the rock slag into the barrel 11 at the top of the drill bit of the present invention.

[0056] In the modular cluster hydraulic impact rock drilling tool of the present invention, it is necessary to install hydraulic pipelines for providing hydraulic power to the three hydraulic power rotary heads 211 and the hydraulic impact device 54, and install high-pressure gas pipelines for providing high-pressure gas to the high-pressure exhaust hole 56. A rotary joint 25 is connected between the power head assembly 21 and the base frame 24. The rotary joint 25 includes a fixed sleeve 2501 fixedly connected to the power head assembly 21, and a sealing sleeve disposed on the periphery of the fixed sleeve and a rotating sleeve 2502 fixedly connected to the base frame 24. A hydraulic channel that is mutually connected and isolated from the outside is provided between the fixed sleeve and the rotating sleeve. and a high-pressure gas channel, a first hydraulic interface 2503 is provided on the fixed sleeve and is connected to the interface 106 of the hydraulic pipeline through a pipeline (a first high-pressure gas interface 2504 is provided on the fixed sleeve and is connected to the interface 105 of the high-pressure gas pipeline through a pipeline), and a second hydraulic interface 2505 is provided on the rotating sleeve and is connected to the hydraulic inlet of the hydraulic impact device 54 through a pipeline (a second high-pressure gas interface 2506 is provided on the rotating sleeve and is connected to the air inlet 55 of the hydraulic impact device 54 through a pipeline). Through the above-mentioned structure of the rotating joint 25, it is ensured that the pipelines will not be knotted when the lower part rotates.

[0057] Working principle of the present invention: when in use, the three hydraulically powered rotary heads 211 inside the rotary head module 2 drive the drill bit of the present invention to rotate, and the crushing hammer heads 51 distributed on different circumferences can be used to achieve uniform crushing of the rock formation. At the same time, the hydraulic impact device 54 provides impact energy for the crushing hammer heads 51, replacing the compressed air drive, reducing the use of air compressors. During the rock drilling process, the rock debris at the bottom of the rock drilling hole is blown up by the high-pressure gas discharged from the high-pressure exhaust hole 56, and some of the lighter rock debris is blown out of the rock drilling hole, while some of the heavier rock debris is blown up and falls into the barrel 11 through the open mouth 101;

[0058] When slag discharge is required, the rock drilling tool is lifted to the outside of the rock drilling hole, and the baffle 13 is flipped open to discharge the rock slag in the barrel 11 from the discharge end of the barrel; at the same time, the present invention utilizes the impact crushing principle of the hydraulic impact hammer 5 to achieve rock stratum crushing, with good crushing effect, reducing the use of air compressor, and the shock-absorbing spring 27 in the slewing head module 2 can absorb the vibration and impact energy generated by the hydraulic impact hammer 5 during rock drilling; during use, the barrel can be used to collect rock slag generated by rock drilling that cannot be directly blown out of the hole by gas, thereby preventing rock slag from accumulating at the bottom of the hole to cause repeated crushing and accidents in the hole such as drill jamming and drill burial.

[0059] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A modular cluster hydraulic impact rock drilling tool, characterized in that: It comprises a head cover module (1), the lower part of the head cover module (1) is detachably connected to a swivel head module (2), the lower end of the swivel head module (2) is detachably connected to a cluster inner module (3) and a cluster outer module (4), and the cluster inner module (3) and the cluster outer module (4) are both connected to a plurality of hydraulic impact sub-hammers (5) for impact drilling; The upper part of the head cover module (1) is provided with a barrel (11) for collecting rock slag and a baffle (13) connected to the discharge end of the barrel (11) and capable of being opened, and the upper end of the barrel (11) is provided with an open opening (101) for feeding rock slag; The lower end of the hydraulic impact sub-hammer (5) is provided with a high-pressure exhaust hole (56), and when the high-pressure exhaust hole discharges high-pressure gas, the rock debris at the bottom of the rock drilling hole can be blown up and dropped into the barrel (11); A dustproof cylinder (17) is connected between the head cover module (1) and the swivel head module (2). The swivel head module (2) comprises a power head assembly (21). The power head assembly (21) is fixed to the lower side of the dustproof cylinder (17) by bolts. The power head assembly (21) is fixed to the middle part of the dustproof cylinder (17) by bolts. The upper end of the dustproof cylinder (17) is fixedly connected to the lower part of the head cover module (1). The diameter of the dustproof cylinder (17) is smaller than the diameter of the head cover module (1), so that the outer side of the dustproof cylinder (17) has space for arranging a pull ring (16) and a clamping rod, and has space for installing bolts for detachable connection between modules.

2. A modular cluster hydraulic impact rock drilling tool according to claim 1, characterized in that: The upper part of the baffle (13) is fixedly connected to a rotating shaft (12) capable of driving the baffle (13) to swing, and the rotating shaft (12) is rotatably hinged on the top of the barrel (11). When the rotating shaft (12) rotates to a first position, the discharge end of the barrel (11) is opened, and the rock slag collected in the barrel (11) can be discharged. When the rotating shaft (12) rotates to a second position, the discharge end of the barrel (11) is closed, and the barrel (11) can collect the rock slag.

3. A modular cluster hydraulic impact rock drilling tool according to claim 2, characterized in that: The head cover module (1) is provided with two groups of adjacent fan-shaped barrels (11), each of which comprises a bottom plate (102) and two partition plates (103) vertically connected to the bottom plate, the angle formed by the two partition plates is an obtuse angle, the baffle plate (13) is arc-shaped, the two ends of the rotating shaft (12) are connected to the upper corners of the baffle plate (13), and the baffle plate (13) is covered on the outer ends of the two partition plates when it is in the second working position, so as to achieve the closure of the discharge end of the barrel (11); the two groups of barrels (11) share a baffle plate, and the two groups of barrels (11) form a fan-shaped notch on the head cover module (1), and interfaces (106) of a high-pressure gas circuit (105) and a hydraulic pipeline are arranged at the notch position; when the baffle plates (13) of the two barrels (11) are in the second working position, they form a cylindrical outer arc surface of the head cover module (1).

4. The modular cluster hydraulic impact rock drilling tool according to claim 3, characterized in that: The bottom plate (102) is provided with a first bolt insertion hole (104), a second bolt insertion hole (1301) is provided at the lower part of the baffle (13), and a clamping rod (14) capable of correspondingly inserting into the first bolt insertion hole and the second bolt insertion hole is provided on the lower surface of the bottom plate, and the clamping rod (14) is connected to a pull ring (16).

5. The modular cluster hydraulic impact rock drilling tool according to claim 1, characterized in that: A roller slewing bearing assembly (22) is arranged at the bottom of the power head assembly (21), a floating frame (23) is arranged at the bottom of the roller slewing bearing assembly (22), a base frame (24) is arranged at the bottom of the floating frame (23), a plurality of shock-absorbing shafts (26) are arranged in an annular shape inside the floating frame (23), shock-absorbing springs (27) are sleeved between the plurality of shock-absorbing shafts (26) and the base frame (24), and cotter pins (28) are arranged at the ends of the plurality of shock-absorbing shafts (26) passing through the base frame (24), and the plurality of cotter pins (28) are mutually matched with the plurality of shock-absorbing shafts (26) one by one to limit the base frame (24).

6. A modular cluster hydraulic impact rock drilling tool according to claim 5, characterized in that: The cluster inner module (3) comprises a rotating connection frame (31), the rotating connection frame (31) being arranged at the bottom of the base frame (24), and a plurality of hydraulic impact sub-hammers (5) being arranged in a ring shape around the center of the rotating connection frame (31).

7. The modular cluster hydraulic impact rock drilling tool according to claim 6, characterized in that: The clustered outer module (4) comprises an outer clustered drill bit mounting frame (41), the outer clustered drill bit mounting frame (41) being sleeved on the lower side of the rotating connecting frame (31), and a plurality of hydraulic impact sub-hammers (5) are arranged in a ring around the center of the outer clustered drill bit mounting frame (41).

8. The modular cluster hydraulic impact rock drilling tool according to claim 7, characterized in that: The plurality of hydraulic impact sub-hammers (5) are connected to the rotating connection frame (31) and the outer cluster drill bit mounting frame (41) respectively by bolts (53); the hydraulic impact sub-hammer (5) comprises a crushing hammer head (51), a hydraulic impact device (54) for driving the crushing hammer head (51) to move, and a hammer front body (52) for limiting and guiding the reciprocating telescopic movement of the crushing hammer head (51); the hydraulic impact device (54) is connected to the bolts (53); an air inlet hole (55) is provided on one side of the hammer front body (52); and the high-pressure exhaust hole (56) communicating with the air inlet hole (55) is provided at the bottom of the crushing hammer head (51).

9. The modular cluster hydraulic impact rock drilling tool according to claim 8, characterized in that: The swivel head module (2) further comprises three hydraulic power swivel heads (211) arranged on the top of the power head assembly (21) and a gear ring (212) having internal teeth arranged inside the roller swivel bearing assembly (22); the output shafts of the three hydraulic power swivel heads (211) are all connected to gears (213); the three gears mesh with the internal teeth of the gear ring to provide rotational power to the roller swivel bearing assembly (22).

10. A method for operating a modular cluster hydraulic impact rock drilling tool as claimed in any one of claims 1 to 9, characterized in that: The three hydraulically powered rotary heads (211) inside the rotary head module (2) drive the cluster inner module (3) and the cluster outer module (4) to rotate, and the crushing hammer heads (51) distributed on different circumferences can be used to evenly crush the rock layer. At the same time, the hydraulic impact device (54) on each crushing hammer head (51) provides impact energy for the crushing hammer head (51), replacing the compressed air drive and reducing the use of air compressors. During the rock drilling process, the rock debris at the bottom of the rock drilling hole is blown up by the high-pressure air discharged from the high-pressure exhaust hole (56), and some of the lighter rock debris is blown out of the rock drilling hole, while some of the heavier rock debris is blown up and falls into the barrel (11) through the open mouth (101); When slag discharge is required, the rock drilling tool is lifted to the outside of the rock drilling hole, and the baffle (13) is flipped open to allow the rock slag in the barrel (11) to be discharged from the discharge end of the barrel.

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