Mechanical-hydraulic combined rock breaking cutting tooth rotary excavating drill

Abstract

The utility model provides a mechanical-hydraulic combined rock breaking cutting tooth rotary excavating drill which comprises a drill cylinder, a plurality of water flow channels are arranged in the drill cylinder, and the water flow channels are distributed at intervals in the annular direction of the drill cylinder. The rotary digging drill further comprises a plurality of cutting teeth matched with the water flow channels in number, a plurality of spray heads matched with the water flow channels in number and a plurality of spray head protection assemblies matched with the spray heads in number, and one end of each spray head is connected with the corresponding water flow channel. External water flow is conveyed to the spray head through the corresponding water flow channel to form water pressure jet flow to crush a rock layer; the plurality of cutting picks are arranged at the bottom of the drilling barrel at intervals, and each spray head is located between every two adjacent cutting picks, so that the rock layer is further crushed, and the loss of the cutting picks is reduced; in addition, a plurality of nozzles are arranged in the drilling barrel, and nozzle protection assemblies are correspondingly arranged outside the nozzles, so that the nozzles are prevented from being damaged by sundries such as rocks in the rock breaking process.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground engineering, and particularly relates to a mechanical-hydraulic combined rock breaking pick rotary drilling drill. Background Art

[0002] With the continuous advancement of construction technology and the acceleration of large-scale engineering construction, the drill barrel rotary drilling technology came into being, especially in the construction of infrastructure such as high-rise buildings, large-scale water conservancy and hydropower, and transportation projects. It has shown its significant advantages, and at the same time, it has put forward higher requirements for rotary drilling construction. When the rotary drill is rotary drilling, the pick at the bottom of the rotary drill is in direct contact with the rock layer. When the rock layer in the borehole changes from soft soil to hard rock, it is necessary to replace the pick with a harder one or directly replace the rotary drill to reduce the damage to the pick. However, in the actual construction process, it is impossible to replace the pick in time to adapt to the corresponding rock layer according to the specific strength of the rock layer in the borehole, and frequent replacement of the pick or drill barrel will also lead to increased construction costs and waste of time.

[0003] Therefore, how to provide a mechanical-hydraulic combined rock breaking pick rotary drilling drill that reduces the wear of the pick by jetting high-pressure water through a nozzle and drilling with the pick is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] The utility model aims to provide a mechanical-hydraulic combined rock breaking pick rotary drilling drill to at least solve one of the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides a mechanical-hydraulic combined rock-breaking pick rotary drill, the rotary drill comprising: a drill barrel, a plurality of water flow channels are arranged inside the drill barrel, and the plurality of water flow channels are spaced apart along the circumferential direction of the drill barrel; a plurality of picks adapted to the number of the water flow channels, and the plurality of picks are spaced apart at the bottom of the drill barrel; a plurality of nozzles adapted to the number of the water flow channels, one end of each of the nozzles is connected to a corresponding water flow channel, each of the nozzles is located between two adjacent picks, and a plurality of the nozzles are arranged inside the drill barrel; a plurality of nozzle protection assemblies adapted to the number of the nozzles, a plurality of the nozzle protection assemblies are fixedly connected to the inner wall of the drill barrel, and each of the nozzle protection assembly covers are arranged on the outside of a corresponding nozzle.

[0006] As a further technical solution of the utility model, the rotary drilling drill also includes an adapter, and the adapter is rotatably connected to the top of the drill barrel.

[0007] As a further technical solution of the utility model, the rotary drilling drill also includes a diverter, and the diverter is used to transport the external water flow to the plurality of water flow channels.

[0008] As a further technical solution of the utility model, the rotary drilling drill also includes a plurality of water flow control valves matched with the number of the water flow channels, and each of the water flow control valves is arranged on a corresponding one of the water flow channels.

[0009] As a further technical solution of the utility model, a thread structure is arranged on the outer wall of the drill tube.

[0010] As a further technical solution of the utility model, the interior of the drill tube is divided into an upper part and a lower part, the upper part of the tube is a solid structure, and the lower part of the tube is a hollow structure.

[0011] As a further technical solution of the utility model, each of the nozzle protection components includes: a prism, the outer wall of the prism is fixedly connected to the inner wall of the lower part of the cylinder, and the inner wall of the prism is enclosed to form an accommodating space; a first gear, a motor is arranged on the first gear, and the motor is used to drive the first gear to rotate; a second gear, the second gear and the first gear are meshed and transmitted, and a corresponding nozzle is fixedly connected in the middle of the second gear; a fixing member, the upper end of the fixing member is used to fix the corresponding nozzle, and the lower end of the fixing member is used to control the spraying range of the corresponding nozzle, and the fixing member is a truncated cone structure with a hollow interior; wherein, the first gear, the second gear, the fixing member and the corresponding nozzle are all located in the accommodating space; the other end of each nozzle passes through the middle of the corresponding second gear, the upper end of the corresponding fixing member, and the lower end of the corresponding fixing member in turn to reach the bottom surface of the corresponding prism.

[0012] As a further technical solution of the utility model, the inclination angle of a plurality of the picks is 65°-75°.

[0013] As a further technical solution of the utility model, the deflection angle of a plurality of the picks is 5°-20°.

[0014] As a further technical solution of the utility model, 9 water flow channels are arranged inside the drill tube, and the 9 water flow channels are distributed at intervals along the circumferential direction of the drill tube.

[0015] Beneficial effects:

[0016] The utility model provides a mechanical-hydraulic combined rock-breaking pick rotary drill, which includes a drill barrel, and a plurality of water flow channels are arranged inside the drill barrel, and the plurality of water flow channels are spaced apart along the circumferential direction of the drill barrel; the rotary drill also includes a plurality of picks adapted to the number of water flow channels, a plurality of nozzles adapted to the number of water flow channels, and a plurality of nozzle protection assemblies adapted to the number of nozzles, and one end of each nozzle is connected to a corresponding water flow channel to transport external water flow to the nozzle through the corresponding water flow channel to form a water pressure jet to break the rock layer; a plurality of picks are spaced apart at the bottom of the drill barrel, and each nozzle is located between two adjacent picks to further break the rock layer and reduce the loss of the picks; in addition, a plurality of nozzles are arranged inside the drill barrel, and nozzle protection assemblies are correspondingly arranged outside the nozzles to prevent the nozzles from being damaged by rocks and other debris during the rock breaking process, thereby reducing the water jet pressure, increasing the degree of damage to the picks, and prolonging the rock breaking time. The utility model arranges a nozzle between two adjacent picks and arranges a nozzle protection component outside the nozzle to extend the service life of the nozzle, reduce the loss of the picks, and improve the efficiency of the combined rock breaking of the nozzle and the picks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a mechanical-hydraulic combined rock breaking pick rotary drilling drill provided by the utility model Figure 1 ;

[0019] Figure 2 A schematic diagram of the structure of a mechanical-hydraulic combined rock breaking pick rotary drilling drill provided by the utility model Figure 2 ;

[0020] Figure 3 A schematic diagram of the structure of a mechanical-hydraulic combined rock breaking pick rotary drilling drill provided by the utility model Figure 3 ;

[0021] Figure 4 This is a schematic diagram of the structure of the nozzle protection assembly in the utility model;

[0022] Figure 5 It is a structural schematic diagram of the fixing member in the utility model;

[0023] Figure 6 This is a schematic diagram of the angle design of the pick in the utility model;

[0024] Reference numerals:

[0025] 1. Drill barrel; 11. Water flow channel; 12. Thread structure;

[0026] 2. Pick teeth;

[0027] 3. Nozzle;

[0028] 4. Nozzle protection assembly; 41. Bevel; 42. First gear; 43. Second gear; 44. Fixing piece;

[0029] 5. Adapter;

[0030] 6. Shunt;

[0031] 7. Water flow control valve. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this utility model.

[0033] Meanwhile, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time.

[0034] Embodiment 1:

[0035] See also Figure 1-3 , the present embodiment 1 provides a mechanical-hydraulic combined rock breaking pick 2 rotary drilling drill, the rotary drilling drill comprising: a drill barrel 1, the drill barrel 1 is provided with a plurality of water flow channels 11, and the plurality of water flow channels 11 are spaced apart along the circumferential direction of the drill barrel 1; a plurality of picks 2 adapted to the number of the water flow channels, and the plurality of picks 2 are spaced apart at the bottom of the drill barrel 1; a plurality of nozzles 33 adapted to the number of the water flow channels, one end of each of the nozzles 33 is connected to a corresponding water flow channel 11, each of the nozzles 33 is located between two adjacent picks 2, and a plurality of the nozzles 33 are arranged inside the drill barrel 1; a plurality of nozzle protection assemblies 4 adapted to the number of the nozzles, a plurality of the nozzle protection assemblies 4 are fixedly connected to the inner wall of the drill barrel 1, and each of the nozzle protection assemblies 4 is covered on the outside of a corresponding nozzle 33.

[0036] Specifically, the utility model provides a mechanical-hydraulic combined rock breaking pick 2 rotary drilling drill, the rotary drilling drill comprises a drill barrel 1, and a plurality of water flow channels 11 are arranged inside the drill barrel 1, and the plurality of water flow channels 11 are spaced apart along the circumferential direction of the drill barrel 1; the rotary drilling drill also comprises a plurality of picks 2 adapted to the number of water flow channels 11, a plurality of nozzles 33 adapted to the number of water flow channels 11, and a plurality of nozzle protection assemblies 4 adapted to the number of nozzles 33, and one end of each nozzle 33 is connected to a corresponding water flow channel 11 to pass external water through the nozzles 33. The water is transported to the nozzle 33 through the corresponding water flow channel 11 to form a water pressure jet to break the rock layer; a plurality of picks 2 are arranged at intervals at the bottom of the drill tube 1, and each nozzle 33 is located between two adjacent picks 2 to further break the rock layer and reduce the loss of the picks 2; in addition, a plurality of nozzles 33 are arranged inside the drill tube 1, and a nozzle protection assembly 4 is correspondingly arranged outside the nozzle 33 to prevent the nozzle 33 from being damaged by rocks and other debris during the rock breaking process, thereby reducing the water jet pressure, increasing the degree of damage to the pick 2, and extending the rock breaking time. The utility model arranges a nozzle 33 between two adjacent picks 2, and arranges a nozzle protection assembly 4 outside the nozzle 33 to extend the service life of the nozzle 33, reduce the loss of the pick 2, and improve the efficiency of the joint rock breaking of the nozzle 33 and the pick 2.

[0037] In some possible embodiments, the rotary drilling drill further includes an adapter 5 , and the adapter 5 is rotatably connected to the top of the drill barrel 1 .

[0038] Those skilled in the art will understand that when a rotary drill is used to drill a hole, it is necessary to utilize the high-speed rotation of the rotary drill to break the hard rock layer. An adapter 5 is provided at the top of the drill barrel 1, and the rotary drilling of the hole is achieved through the rotational connection between the adapter 5 and the top of the drill barrel 1.

[0039] In some possible embodiments, the rotary drilling rig further includes a flow diverter 6 , and the flow diverter 6 is used to transport the external water flow to the plurality of water flow channels 11 .

[0040] This is because a plurality of cutting teeth 2 are provided at the bottom of the drill barrel 1. In order to reduce the wear of the cutting teeth 2, a high-pressure water jet is used to pre-crack the hard rock layer. Therefore, a plurality of water flow channels 11 are correspondingly provided inside the drill barrel 1 to convey the external water flow to the corresponding nozzles 33 through the water flow channels 11, and a diverter 6 is provided at the adapter 5. The diverter 6 is used to disperse an external water flow conveying pipeline into a plurality of water flow channels 11 to reduce the setting of the external water flow conveying pipeline.

[0041] In some possible embodiments, the rotary drilling rig further includes a plurality of water flow control valves 7 matched with the number of the water flow channels 11 , and each of the water flow control valves 7 is disposed on a corresponding one of the water flow channels 11 .

[0042] Those skilled in the art can understand that a water flow control valve 7 is correspondingly provided on each water flow channel 11, and the water flow control valve 7 is used to control the water flow pressure, thereby controlling the water pressure at the corresponding nozzle 33, and adjusting the water pressure at the nozzle 33 according to the hardness of the rock layer in the borehole to achieve the purpose of efficient rock breaking.

[0043] In some possible embodiments, a threaded structure 12 is provided on the outer wall of the drill tube 1 .

[0044] In order to improve the rock breaking efficiency, a threaded structure 12 is provided on the outer wall of the drill tube 1 to assist in rock breaking, so as to reduce the stress between the drill tube 1 and the inner wall of the borehole and reduce the possibility of deviation from the trajectory during the drilling process.

[0045] In some possible embodiments, the interior of the drill barrel 1 is divided into an upper barrel portion and a lower barrel portion, the upper barrel portion is a solid structure, and the lower barrel portion is a hollow structure.

[0046] Those skilled in the art can understand that the interior of the drill barrel 1 is divided into an upper barrel portion and a lower barrel portion, the upper barrel portion is a solid structure, the lower barrel portion is a hollow structure, and the inner wall of the lower barrel portion is set to a wedge-shaped structure. When the drill barrel 1 is rotated downward, it can not only reduce the stress between the rock and the drill barrel 1, but also prevent the rock from passing through the upper barrel portion to destroy the connection structure at the top of the drill barrel 1, thereby ensuring the normal operation of the rotary drill.

[0047] In some possible embodiments, see Figure 4Each of the nozzle protection components 4 includes: a prism 41, the outer wall of the prism 41 is fixedly connected to the inner wall of the lower part of the cylinder, and the inner wall of the prism 41 encloses a accommodating space; a first gear 42, the first gear 42 is provided with a motor, and the motor is used to drive the first gear 42 to rotate; a second gear 43, the second gear 43 and the first gear 42 are meshed and driven, and the middle of the second gear 43 is fixedly connected to a corresponding nozzle 33; a fixing member 44, the upper end of the fixing member 44 is used to fix a corresponding The nozzle 33, the lower end of the fixing part 44 is used to control the spraying range of the corresponding nozzle 33, and the fixing part 44 is a truncated cone structure with a hollow interior; wherein the first gear 42, the second gear 43, the fixing part 44 and the corresponding nozzle 33 are all located in the accommodating space; the other end of each nozzle 33 passes through the middle of the corresponding second gear 43, the upper end of the corresponding fixing part 44, the lower end of the corresponding fixing part 44 in sequence to reach the bottom surface of the corresponding prism 41.

[0048] In order to prevent the nozzle 33 from being damaged during the rotary drilling process, a nozzle protection assembly 4 is correspondingly arranged on the outside of each nozzle 33, and each nozzle protection assembly 4 includes a prism 41, a first gear 42, a second gear 43 and a fixing member 44. The outer wall of the prism 41 is fixedly connected to the inner wall of the lower part of the cylinder, and the inner wall of the prism 41 is surrounded to form a accommodating space for accommodating the first gear 42, the second gear 43, the fixing member 44 and a corresponding nozzle 33; the first gear 42 and the second gear 43 are combined into a bevel gear, and a motor is arranged on the first gear 42 to drive the first gear 42 to rotate, thereby driving The second gear 43 is driven to rotate; a nozzle 33 is fixedly connected in the middle of the second gear 43, so that the nozzle 33 moves with the second gear 43; the fixing member 44 is a truncated cone structure with a hollow interior, the upper end of the fixing member 44 is a small diameter, and the lower end of the fixing member 44 is a large diameter. The nozzle 33 passing through the second gear 43 also passes through the middle of the fixing member 44, and the upper end of the fixing member 44 is fixedly connected to a corresponding water jet nozzle 33. The water jet nozzle 33 uses the upper end of the fixing member 44 as a support point, and moves along the lower end of the fixing member 44 driven by the second gear 43 to form a high-pressure water spray range, such as Figure 5As shown, a fixed hole is formed at the connection between the upper end of the fixing member 44 and a corresponding nozzle 33, and the range in which the corresponding nozzle 33 can move inside the fixing member 44 is the movable hole. In a specific embodiment, when the water flow sprayed by the nozzle 33 is sprayed on the rock layer below the pick 2, a single groove is formed, so that the rock layer below the pick 2 is pre-cracked, and the corresponding pick 2 crushes the pre-cracked rock layer; when the water flow sprayed by the nozzle 33 is sprayed between two adjacent picks 2, two-side grooves are formed, and the sprayed water flow pre-cracks the rock layer between the two adjacent picks 2, so that cracks are generated in the rock layer between the two adjacent picks 2, which is conducive to further crushing of the rock layer by the pick 2 and reducing the loss of the pick 2.

[0049] In some possible embodiments, see Figure 6 The inclination angle of several of the picks 2 is 65°-75°.

[0050] In some possible embodiments, the deflection angle of the plurality of picks 2 is 5°-20°.

[0051] In some possible embodiments, nine water flow channels 11 are disposed inside the drill barrel 1 , and the nine water flow channels 11 are spaced apart along the circumferential direction of the drill barrel 1 .

[0052] Those skilled in the art can understand that, based on a large number of experimental calculations, it is found that when the inclination angle of the pick 2 is 65°-75°, the deflection angle of the pick 2 is 5°-20°, and 9 water flow channels are designed at intervals along the circumferential direction of the drill barrel 1, the efficiency of the combined rock breaking by spraying high-pressure water flow by the pick 2 and the nozzle 33 is the highest, and frequent replacement of the pick 2 during the construction process can be avoided.

[0053] Finally, it should be noted that the above embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiment of the utility model. They should all be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

[0054] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A mechanical-hydraulic combined rock breaking pick rotary drilling drill, characterized in that: The rotary drilling rig comprises: A drill tube, wherein a plurality of water flow channels are arranged inside the drill tube, and the plurality of water flow channels are spaced apart and distributed along the circumferential direction of the drill tube; A plurality of picks matching the number of the water flow channels, wherein the plurality of picks are arranged at intervals at the bottom of the drill tube; A plurality of nozzles matching the number of the water flow channels, one end of each nozzle being connected to a corresponding water flow channel, each nozzle being located between two adjacent pick teeth, and a plurality of nozzles being arranged inside the drill barrel; A plurality of nozzle protection assemblies matched with the number of the nozzles are fixedly connected to the inner wall of the drill tube, and each nozzle protection assembly cover is arranged on the outside of a corresponding nozzle.

2. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 1, characterized in that: The rotary drilling drill also includes an adapter, which is rotatably connected to the top of the drill barrel.

3. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 2, characterized in that: The rotary drilling drill also includes a flow diverter, which is used to transport external water flow to the plurality of water flow channels.

4. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 3 is characterized in that: The rotary drilling drill also includes a plurality of water flow control valves matched with the number of the water flow channels, and each of the water flow control valves is arranged on a corresponding one of the water flow channels.

5. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 4, characterized in that: A thread structure is arranged on the outer wall of the drill tube.

6. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 5, characterized in that: The interior of the drill tube is divided into an upper part and a lower part of the tube, the upper part of the tube is a solid structure, and the lower part of the tube is a hollow structure.

7. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 6, characterized in that: Each of the nozzle protection components comprises: A prism, wherein the outer wall of the prism is fixedly connected to the inner wall of the lower part of the cylinder, and the inner wall of the prism is enclosed to form an accommodating space; A first gear, wherein a motor is disposed on the first gear and the motor is used to drive the first gear to rotate; a second gear, the second gear and the first gear are meshed for transmission, and a corresponding one of the nozzles is fixedly connected in the middle of the second gear; A fixing member, wherein the upper end of the fixing member is used to fix a corresponding one of the nozzles, and the lower end of the fixing member is used to control the spraying range of the corresponding one of the nozzles, and the fixing member is a truncated cone structure with a hollow interior; Among them, the first gear, the second gear, the fixing member and the corresponding one of the nozzles are all located in the accommodating space; the other end of each of the nozzles passes through the middle of the corresponding one of the second gears, the upper end of the corresponding one of the fixing members, the lower end of the corresponding one of the fixing members in sequence to reach the bottom surface of the corresponding one of the prisms.

8. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 7, characterized in that: The inclination angles of the plurality of cutting teeth are 65°-75°.

9. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 8, characterized in that: The deflection angles of the plurality of cutting teeth are 5°-20°.

10. The mechanical-hydraulic combined rock breaking pick rotary drilling drill according to claim 9, characterized in that: Nine water flow channels are arranged inside the drill tube, and the nine water flow channels are distributed at intervals along the circumferential direction of the drill tube.

Images