Drilling and reaming device

Abstract

The utility model provides a drilling and reaming device which comprises a first driving assembly extending in the first direction, the driving end of the first driving assembly is connected with a guide drill bit, and the first driving assembly is used for driving the guide drill bit to drill along a guide hole so as to guide reaming operation; at least three second driving assemblies are arranged around the first driving assembly, and the first driving assembly and the second driving assemblies are jointly sleeved with a base. The driving ends of the at least three second driving assemblies are jointly in transmission connection with a power integration mechanism, the output end of the power integration mechanism is connected with a cutter head, the power integration mechanism and the cutter head are arranged on the periphery of the first driving assembly in a sleeving mode and rotationally connected with the first driving assembly, and the power integration mechanism is used for driving the cutter head to rotate to conduct reaming operation under joint driving of the at least three second driving assemblies; the power of the at least three second driving assemblies is integrated through the power integration mechanism and then transmitted to the reaming cutter head, the reaming power of the cutter head can be increased, the problem that the single reaming diameter is small due to insufficient power is effectively solved, and the reaming efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of horizontal directional drilling, and in particular to a drilling and reaming device. Background Art

[0002] In recent years, China's pipeline construction has been incredibly demanding. As directional crossing pipelines have become larger in diameter, longer in distance, and require more complex geological conditions, the requirements for horizontal directional drilling (HDD) technology and equipment have become increasingly stringent. Traditional directional drilling involves first drilling a small-diameter pilot hole, then using reaming tools to expand the diameter. However, due to the limited power available from the drilling rig, the diameter of the hole can only be expanded in a single pass. This necessitates multiple reamers, using different reaming tools in sequence. This results in low efficiency, long construction times, and high risks, severely hindering the development of pipeline construction. Utility Model Content

[0003] The purpose of this application is to provide a drilling and reaming device to solve the above problems, including:

[0004] a first drive assembly, the first drive assembly extending in a first direction, a pilot drill bit connected to a drive end thereof, the first drive assembly being used to drive the pilot drill bit to drill along the pilot hole to guide the reaming operation;

[0005] Second drive assemblies, at least three of which are arranged around the first drive assembly, and the second drive assemblies and the first drive assembly are jointly provided with a base;

[0006] A power integration mechanism is provided on a side of the base close to the guide drill bit, the input end of the power integration mechanism is respectively connected to the at least three second drive assemblies in a transmission manner, and the output end thereof is fixedly connected to the cutter disc, the power integration mechanism and the cutter disc are sleeved on the outer periphery of the first drive assembly and are rotatably connected thereto, and the power integration mechanism is used to drive the cutter disc to rotate under the joint drive of at least three second drive assemblies to perform hole reaming operations.

[0007] According to the technical solution provided in certain embodiments of the present application, the second drive assembly includes a second drilling tool, the drive end of the second drilling tool is sleeved with a second drive gear, the power integration mechanism includes a second inner ring gear, the second inner ring gear is the input end, at least three second drive gears are respectively engaged with the second inner ring gear, the second inner ring gear is fixedly connected with a sleeve, the sleeve is the output end, the sleeve is sleeved on the outer periphery of the first drive assembly and is rotatably connected thereto, and the free end of the sleeve is fixed to the cutter disc.

[0008] According to the technical solution provided in certain embodiments of the present application, the first drive assembly includes a first drill tool, the driving end of the first drill tool passes through the base and is connected to a reduction mechanism, the reduction mechanism is fixedly connected to the guide drill bit, and the reduction mechanism is used to reduce the rotation speed of the first drill tool while increasing the torque transmitted to the guide drill bit by the first drill tool.

[0009] According to the technical solution provided in certain embodiments of the present application, the deceleration mechanism includes a first drive gear and a first inner ring gear, the first drive gear is sleeved on the driving end of the first drill bit, the first inner ring gear is arranged on the base and is arranged around the first drive gear, at least one first transition gear is engaged between the first inner ring gear and the first drive gear, the first transition gear is coaxially connected to the second transition gear, the second transition gear is engaged with a transmission gear, the number of teeth of the transmission gear is greater than that of the first drive gear, the transmission gear is connected to the guide drill bit through a transmission shaft, the transmission shaft passes through the sleeve and the cutter disc in sequence along the first direction, and is rotatably connected to the sleeve and the cutter disc respectively.

[0010] According to the technical solution provided in certain embodiments of the present application, the second inner gear ring is rotatably connected to the outside of the cover shell, the cover shell has an open end on one side along the first direction, the base covers the open end and is fixed to the cover shell, and the sleeve passes through one end of the cover shell away from the base and is rotatably connected to the cover shell.

[0011] According to the technical solution provided in certain embodiments of the present application, the cutter disc includes a cutter disc body, and a plurality of first drill bits and second drill bits are staggeredly distributed on one side of the cutter disc body close to the guide drill bit, and a plurality of protective ribs extending along the first direction are evenly distributed around the circumference of the cutter disc body.

[0012] According to the technical solutions provided in certain embodiments of the present application, a plurality of grooves extending along the first direction are further provided on the circumference of the cutter disc body between two adjacent protective ribs.

[0013] According to the technical solution provided in certain embodiments of the present application, it also includes a fixed disk, at least two of which are distributed along the first direction on the side of the base away from the guide drill bit, and the fixed disk is sleeved on the outer periphery of the first drive assembly and at least three of the second drive assemblies.

[0014] Compared with the prior art, the present application has the following beneficial effects: the present application provides a drilling and reaming device, comprising a first drive assembly, the first drive assembly extending in a first direction, and a drive end thereof being connected to a guide drill bit for driving the guide drill bit to drill along the guide hole to guide the reaming operation; at least three second drive assemblies are arranged around the first drive assembly, and a base is commonly sleeved on the first drive assembly and the second drive assembly; the drive ends of the at least three second drive assemblies are commonly connected to a power integration mechanism for transmission, the output end of the power integration mechanism is connected to a cutter disc, the power integration mechanism and the cutter disc are sleeved on the outer periphery of the first drive assembly and are rotatably connected thereto, the power integration mechanism being used to drive the cutter disc to rotate under the common drive of at least three second drive assemblies to perform reaming operations; by setting up a power integration mechanism to integrate the power of at least three second drive assemblies and then transmit it to the reaming cutter disc, the reaming power of the cutter disc can be increased, effectively avoiding the problem in the prior art that the torque of the drilling rig or a single drill bit limits the single reaming diameter to be small, thereby greatly improving the reaming efficiency.

[0015] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, the description of a technical feature, technical solution or beneficial effect in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic structural diagram of a drilling and reaming device provided in an embodiment of the present application;

[0018] Figure 2 This is a schematic axial cross-sectional view of a drilling and reaming device provided in an embodiment of the present application;

[0019] Figure 3A schematic structural diagram of a speed reduction mechanism of a drilling and reaming device provided in an embodiment of the present application;

[0020] Figure 4 A schematic structural diagram of a cutter head of a drilling and reaming device provided in an embodiment of the present application.

[0021] The text annotations in the figure represent:

[0022] 1. Guide drill bit; 2. Base; 3. Cutter head; 4. First drilling tool; 5. Second drilling tool; 6. Cover; 7. Fixed plate; 101. First drive gear; 102. First inner ring gear; 103. First transition gear; 104. Second transition gear; 105. Transmission gear; 201. Second drive gear; 202. Second inner ring gear; 301. First drill bit; 302. Second drill bit; 303. Protective rib. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application. Specifically, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0025] As mentioned in the background technology, in order to solve the problems existing in the prior art, this embodiment provides a drilling and reaming device, comprising:

[0026] A first drive assembly, the first drive assembly extends along a first direction, a driving end of which is connected to a pilot drill bit 1, and the first drive assembly is used to drive the pilot drill bit 1 to drill along the pilot hole to guide the reaming operation;

[0027] Second drive components, at least three second drive components are arranged around the first drive component, and the second drive components and the first drive components are jointly sleeved with a base 2;

[0028] The power integration mechanism is arranged on one side of the base 2 close to the guide drill bit 1. The input end of the power integration mechanism is respectively connected to the at least three second drive components, and the output end is fixedly connected to the cutter disc 3. The power integration mechanism and the cutter disc 3 are sleeved on the outer periphery of the first drive component and are rotatably connected to it. The power integration mechanism is used to drive the cutter disc to rotate under the joint drive of at least three second drive components to perform hole reaming operations.

[0029] like Figure 1 As shown, the first direction is Figure 1 In the horizontal direction, the guide drill bit 1 is approximately a cylindrical structure, and spiral cutting teeth are arranged on its periphery, which can be used to guide the reaming operation while drilling along the guide hole under the drive of the first drive component to ensure the accuracy of the reaming; in other embodiments of the present application, the guide drill bit 1 can also be replaced with a reaming drill bit according to actual usage. The reaming drill bit with a reaming diameter smaller than that of the cutter disc 3 is combined with the cutter disc 3 to form a multi-stage reaming device, which can further improve the reaming efficiency; at least three second drive components are arranged around the first drive component, and the second drive component and the first drive component are relatively fixed. The cutter disc 3 is also approximately a cylindrical structure, and the power integration mechanism and the cutter disc 3 are sleeved on the periphery of the first drive component and are rotatably connected thereto, so that the power integration mechanism, the cutter disc 3 and the first drive component can rotate independently without interfering with each other.

[0030] During use, the guide drill bit 1 is placed in the guide hole, and the first drive assembly and the second drive assembly are started. The first drive assembly drives the guide drill bit 1 to rotate along the first circumferential direction, and the guide drill bit 1 drills along the guide hole; the power integration mechanism integrates the power of at least three second drive assemblies and transmits it to the cutter head 3, so that the cutter head 3 rotates along the second circumferential direction, and the second circumferential direction is opposite to the first circumferential direction. The cutter head 3 rotates to break the rock and expand the original guide hole; by setting the guide drill bit 1 and the cutter head 3 to opposite rotation directions, the counter-torques generated by the two can be offset to a certain extent, which is beneficial for the reaming device to maintain balance during operation.

[0031] By setting up a power integration mechanism to integrate the power of at least three second drive components and then transmit it to the cutter head 3, the hole expansion power of the cutter head 3 can be increased, effectively avoiding the problem in the existing technology that the single hole expansion diameter is small due to the torque limitation of the drilling rig or a single drill bit, and greatly improving the hole expansion efficiency.

[0032] In a preferred embodiment, the second drive assembly includes a second drilling tool 5, the drive end of the second drilling tool 5 is provided with a second drive gear 201, the power integration mechanism includes a second inner ring gear 202, the second inner ring gear 202 is the input end, at least three second drive gears 201 are respectively engaged with the second inner ring gear 202, the second inner ring gear 202 is fixedly connected with a sleeve, the sleeve is the output end, the sleeve is sleeved on the outer periphery of the first drive assembly and is rotatably connected to it, and the free end of the sleeve is fixed to the cutter disc 3.

[0033] like Figure 1 and Figure 2 As shown, the second drilling tool 5 adopts the screw drilling tool in the prior art. The screw drilling tool uses the mud pumped out by the mud pump as a power source to convert the pressure of the liquid into rotational mechanical energy. In this embodiment, three screw drilling tools are provided. The driving end of the screw drilling tool is sleeved with a second driving gear 201, and a second inner gear ring 202 is provided around the three second driving gears 201, so that the second inner gear ring 202 is engaged with the three second driving gears 201 at the same time. The diameter of the sleeve is smaller than the second inner gear ring and the cutter head 3. An annular disc is further connected at both ends thereof, which is convenient for fixing the second inner gear ring and the cutter head 3 respectively through the annular disc; the power of the three second drilling tools 5 is integrated and output to the cutter head 3 through the second inner gear ring. At the same time, the rotation of the second drilling tool 5 can further increase the rotational torque of the cutter head 3 after being transmitted through the second inner gear ring 202, effectively solving the limitation of insufficient power on the diameter of a single hole expansion and improving the hole expansion efficiency.

[0034] In a preferred embodiment, the first drive assembly includes a first drilling tool 4, the driving end of the first drilling tool 4 passes through the base 3 and is connected to a reduction mechanism, which is fixedly connected to the guide drill bit 1. The reduction mechanism is used to reduce the rotational speed of the first drilling tool 4 while increasing the torque transmitted to the guide drill bit 1 by the first drilling tool 4.

[0035] like Figure 1 and Figure 3 As shown, the first drilling tool 4 adopts the turbodrill in the prior art. The turbodrill uses drilling fluid as a power source and converts the kinetic energy of the liquid flow into rotational mechanical energy. A reduction mechanism is also provided between the first drilling tool 4 and the guide drill bit 1, which can further increase the rotational torque of the guide drill bit 1.

[0036] In a preferred embodiment, the reduction mechanism includes a first drive gear 101 and a first inner ring gear 102. The first drive gear 101 is sleeved on the driving end of the first drilling tool 4. The first inner ring gear 102 is arranged on the base 3 and is arranged around the first drive gear 101. At least one first transition gear 103 is engaged between the first inner ring gear 102 and the first drive gear 101. The first transition gear 103 is coaxially connected to the second transition gear 104. The second transition gear 104 is engaged with a transmission gear 105. The number of teeth of the transmission gear 105 is greater than that of the first drive gear 101. The transmission gear 105 is connected to the guide drill bit 1 through a transmission shaft. The transmission shaft passes through the sleeve and the cutter disc 3 in sequence along the first direction, and is rotatably connected to the sleeve and the cutter disc 3 respectively.

[0037] like Figure 1 and Figure 3 As shown, the main body of the base 2 is a cylindrical body with an open end, and an annular connecting portion is sleeved on the outer edge of the opening of the cylindrical body. The driving end of the first drilling tool 4 passes through the bottom of the cylindrical body and extends into the cylindrical body and is sleeved with a first driving gear 101. The first inner gear ring 102 is fixed on the inner wall of the cylindrical body and surrounds the outer periphery of the first driving gear 101. The first driving gear 101 and the first inner gear ring 102 are jointly meshed with a first transition gear 103, and the first transition gear 103 is coaxially connected to the second transition gear 104. In this embodiment, In the embodiment, the number of the first transition gear 103 and the second transition gear 104 are three, and the number of teeth of the first transition gear 103 is greater than that of the second transition gear 104. The three second transition gears 104 are commonly engaged with a transmission gear 105. The transmission gear 105 is coaxially arranged with the first drive gear 101 and has a greater number of teeth than the first drive gear 101. The transmission gear 105 is connected to the guide drill bit 1 through a transmission shaft. The transmission shaft passes through the sleeve and the cutter disc 3 in sequence along the first direction and is rotatably connected to the sleeve and the cutter disc 3 through a deep groove ball bearing.

[0038] In a preferred embodiment, the second inner gear ring 202 is externally rotatably connected to a cover shell 6, the cover shell 6 has an open end on one side along the first direction, the base 2 covers the open end and is fixed to the cover shell 6, and the sleeve passes through one end of the cover shell 6 away from the base 2 and is rotatably connected to the cover shell 6.

[0039] like Figure 1 As shown, the cover shell 6 is also a cylindrical structure, the base 2 covers the open end of the cover shell 6, and its annular connecting portion is fixed to the open end of the cover shell 6 by bolts. The base 2 and the cover shell 6 are interlocked to form a closed first space inside the two. By arranging the gears used for transmitting power of the reaming device in the first space and separating it from the external environment, it can effectively avoid interference with the gear structure caused by mud and rock chips in the environment during the reaming operation.

[0040] In a preferred embodiment, the cutter disc 3 includes a cutter disc body, and a plurality of first drill bits 301 and second drill bits 302 are staggeredly distributed on one side of the cutter disc body close to the guide drill bit 1, and a plurality of protective ribs 303 extending along the first direction are evenly distributed around the circumference of the cutter disc body.

[0041] like Figure 4 As shown, the cutter head body is approximately cylindrical in structure, the first drill bit 301 adopts the roller drill bit in the prior art, and the second drill bit 302 adopts the roller cutter drill bit in the prior art. The roller cutter drill bit has a small rock breaking torque and concentrated pressure, which is convenient for penetrating the formation, and the roller cutter drill bit is suitable for harder rocks. By arranging two different types of reaming drill bits on the side of the cutter head body close to the guide drill bit 1, the rock breaking efficiency can be effectively improved and the applicability of the reaming device can be enhanced. The protective rib 303 is used to enhance the overall strength of the cutter head 3.

[0042] In a preferred embodiment, a plurality of grooves extending along the first direction are further provided between two adjacent protective ribs 303 in the circumferential direction of the cutter head body.

[0043] like Figure 4 As shown, the groove is opened along the first direction on the outer periphery of the cutter head 3 to form a flow channel that can be used to discharge rock cuttings and mud during reaming operation, thereby reducing the drilling resistance of the reaming device.

[0044] In a preferred embodiment, a fixed disk 7 is further included, at least two fixed disks 7 are distributed along the first direction on the side of the base 2 away from the pilot drill bit 1, and the fixed disks 7 are sleeved on the periphery of the first drive assembly and at least three second drive assemblies.

[0045] like Figure 1 As shown, in this embodiment, two fixing plates 7 are provided, which are distributed along the first direction and are simultaneously mounted on the first drilling tool 4 and the three second drilling tools 5, so that the first drilling tool 4 and the three second drilling tools 5 can be fixed to each other while maintaining the stability of the reaming device.

[0046] Working principle: When in use, place the guide drill bit 1 in the guide hole, start the first drilling tool 4 and the second drilling tool 5, the first drilling tool 4 drives the first driving gear 101 to rotate around its axis along the first circumferential direction, the first driving gear 101 rotates through the first transition gear 103 and the second transition gear 104 with the transmission gear 105, and then drives the guide drill bit 1 to drill along the guide hole; at the same time, the three second drilling tools 5 respectively drive the three second driving gears 201 to rotate, the second inner gear ring 202 integrates the power of the three second drilling tools 5 and transmits it to the cutter head 3, so that the cutter head 3 rotates along the second circumferential direction, and the cutter head 3 rotates to break the rock and expand the original guide hole.

[0047] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A drilling and reaming device, characterized in that: include: A first drive assembly, the first drive assembly extending in a first direction, a driving end of which is connected to a guide drill bit (1), the first drive assembly being used to drive the guide drill bit (1) to drill along the guide hole to guide the reaming operation; a second drive assembly, at least three of which are arranged around the first drive assembly, and the second drive assembly and the first drive assembly are both provided with a base (2); A power integration mechanism is provided on a side of the base (2) close to the guide drill bit (1), an input end of the power integration mechanism is respectively connected to at least three of the second drive assemblies in a transmission manner, and an output end thereof is fixedly connected to a cutter disc (3), the power integration mechanism and the cutter disc (3) are sleeved on the outer periphery of the first drive assembly and are rotatably connected thereto, and the power integration mechanism is used to drive the cutter disc (3) to rotate under the joint drive of at least three of the second drive assemblies to perform a hole reaming operation.

2. A drilling and reaming device according to claim 1, characterized in that: The second drive assembly includes a second drilling tool (5), a driving end of the second drilling tool (5) is sleeved with a second drive gear (201), the power integration mechanism includes a second inner gear ring (202), the second inner gear ring (202) is the input end, at least three second drive gears (201) are respectively engaged with the second inner gear ring (202), the second inner gear ring (202) is fixedly connected with a sleeve, the sleeve is the output end, the sleeve is sleeved on the outer periphery of the first drive assembly and is rotatably connected thereto, and the free end of the sleeve is fixed to the cutter head (3).

3. A drilling and reaming device according to claim 2, characterized in that: The first driving assembly comprises a first drilling tool (4), wherein a driving end of the first drilling tool (4) passes through the base (2) and is connected to a reduction mechanism, wherein the reduction mechanism is fixedly connected to the guide drill bit (1), and the reduction mechanism is used to reduce the rotation speed of the first drilling tool (4) and simultaneously increase the torque transmitted from the first drilling tool (4) to the guide drill bit (1).

4. A drilling and reaming device according to claim 3, characterized in that: The reduction mechanism comprises a first driving gear (101) and a first inner gear ring (102), wherein the first driving gear (101) is sleeved on the driving end of the first drilling tool (4), the first inner gear ring (102) is arranged on the base (2) and surrounds the first driving gear (101), at least one first transition gear (103) is meshed between the first inner gear ring (102) and the first driving gear (101), the first transition gear (103) is coaxially connected to a second transition gear (104), the second transition gear (104) is meshed with a transmission gear (105), the number of teeth of the transmission gear (105) is greater than that of the first driving gear (101), and the transmission gear (105) is connected to the pilot drill bit (1) via a transmission shaft, the transmission shaft sequentially passes through the sleeve and the cutter disc (3) along the first direction, and is rotationally connected to the sleeve and the cutter disc (3) respectively.

5. The drilling and reaming device according to claim 2, characterized in that: The second inner gear ring (202) is externally rotatably connected to a cover shell (6), the cover shell (6) having an open end on one side along the first direction, the base (2) covering the open end and being fixed to the cover shell (6), and the sleeve passing through an end of the cover shell (6) away from the base (2) and being rotatably connected to the cover shell (6).

6. The drilling and reaming device according to claim 1, characterized in that: The cutterhead (3) comprises a cutterhead body, a plurality of first drill bits (301) and second drill bits (302) being staggeredly distributed on one side of the cutterhead body close to the guide drill bit (1), and a plurality of protective ribs (303) extending along the first direction being evenly distributed around the circumference of the cutterhead body.

7. The drilling and reaming device according to claim 6, characterized in that: A plurality of grooves extending along the first direction are also provided between two adjacent protective ribs (303) in the circumferential direction of the cutter head body.

8. The drilling and reaming device according to claim 1, characterized in that: It also includes a fixed disk (7), at least two of the fixed disks (7) are distributed along the first direction on a side of the base (2) away from the guide drill bit (1), and the fixed disks (7) are sleeved on the outer periphery of the first drive assembly and at least three of the second drive assemblies.

Images