A fluid-driven tunneling device

Abstract

The present invention discloses a fluid-driven tunneling device that uses a fluid, such as hydraulic oil, water, or compressed air, as an energy source to drive the movement of a rotating device. It has a simple structure, large torque, high rotational speed, high transmission efficiency, low energy consumption, and small vibration, and can well meet the requirements of the tunneling device for torque, rotational speed, and running stability. At the same time, the fluid power device includes an outer ring and a core body. There is at least one order or more of secondary flow channels between the nozzle and the discharge port on the outer ring surface of the core body. The fluid enters through the inlet flow channel and is ejected step by step through the nozzle of the core body and the secondary flow channels, acting on at least two driving recesses in the circumferential direction of the outer ring, generating a thrust on these driving recesses to push the outer ring to rotate and do work, realizing power output. Finally, the fluid is discharged through the discharge port of the core body via the discharge flow channel.

Description

Technical Field

[0001] The present invention discloses a fluid-driven tunneling device, which belongs to the technical field of mining machinery devices according to the International Patent Classification (IPC). Background Art

[0002] Existing various tunneling devices, especially impact drilling devices, are widely used in construction and mining operations. Most of them adopt an engine and a rotating device, and the engine drives the rotating device to rotate to drive the working device at the front end of the rotating device to work.

[0003] Since the working device requires a large torque during operation and is restricted by the working space, the volume of the engine cannot be too large. Existing engines are mostly pneumatic engines or hydraulic engines.

[0004] Regarding the pneumatic engine in the engine, the current research direction is to develop small engines with compact structure, high efficiency and reliability. Most of them are in the experimental or trial production stage and there is no large-scale commercial application yet. Currently, most gas engine design prototypes are based on piston engines or vane pumps, and achieve energy conversion through heat exchange to achieve power output, but they have complex structures and low efficiency, and it is difficult to meet the requirements of endurance.

[0005] For hydraulic engines, most of them are low-speed hydraulic motors, with low working efficiency, complex structure of the motor itself, cumbersome maintenance and use, and poor working stability.

[0006] To further improve the performance of the engine, meet the working requirements of the tunneling device, and achieve compact, efficient and reliable power generation and output, the inventor of the present invention has carried out years of development and research, so the present invention is proposed. Summary of the Invention

[0007] Aiming at the deficiencies of the prior art, the present invention provides a fluid-driven tunneling device. Through multiple-stage flow channels circumferentially arranged on the core of the fluid power device, the energy of the fluid is utilized multiple times, and the core drives the rotating outer ring to achieve power output, having the advantages of compact structure, large torque, high speed, high transmission efficiency, energy conservation and environmental protection.

[0008] To achieve the above object, the present invention is realized through the following technical solutions:

[0009] A fluid-driven tunneling device, characterized in that: it includes an installation base, on which a rotating device and a fluid power device for driving the rotating device are provided. It is characterized in that the fluid power device includes:

[0010] An outer ring, on the circumferential direction of the inner ring surface of which a plurality of driving recesses are provided;

[0011] A core body is coaxially arranged inside an outer ring and can rotate relative to the outer ring. At least one nozzle, at least one drain port, and at least one secondary flow channel located between the nozzle and the drain port are provided on the outer circumferential surface of the core body;

[0012] At least one inlet flow channel that communicates with at least one nozzle; and

[0013] At least one drain flow channel that communicates with at least one drain port;

[0014] Fluid enters through the inlet flow channel, is ejected step by step through the nozzle and the secondary flow channel of the core body, acts on at least two driving recesses in the circumferential direction of the outer ring, generates a thrust on these driving recesses to push the outer ring to rotate and do work, realizing power output. Finally, the fluid is discharged through the drain port of the core body and through the drain flow channel.

[0015] Furthermore, at least one inlet flow channel, at least one nozzle, at least two driving recesses, at least one secondary flow channel, at least one drain port, and at least one drain flow channel form an independent working unit, and the fluid power device includes at least one independent working unit.

[0016] Furthermore, the nozzle and the secondary flow channel on the core body communicate with the corresponding driving recesses on the outer ring. The secondary flow channels are arranged staggered with the corresponding driving recesses and are sequentially connected. The secondary flow channels are arranged along the circumferential direction of the core body or the outer ring.

[0017] Furthermore, the inlet flow channel and the drain flow channel are formed inside the core body.

[0018] Furthermore, the core body includes:

[0019] An inlet flow channel that forms a nozzle on the circumferential surface of the core body. Its trend is an arc line extending from the middle to the outside. The nozzle communicates with the corresponding driving recess on the outer ring, forming a first-stage flow channel;

[0020] A secondary flow channel. Its trend is an arc line that bends from the edge of the core body inward and then to the edge. Each secondary flow channel communicates with the two adjacent driving recesses corresponding to the outer ring, forming an N-stage flow channel along the circumferential direction of the core body, where N is a natural number greater than or equal to 2;

[0021] Each stage of the flow channel and the corresponding driving recess on the outer ring cooperate to form a multi-stage stroke structure with decreasing fluid energy.

[0022] Furthermore, the secondary flow channel includes a return channel and a stroke channel that communicate with each other. The return channel communicates with the corresponding driving recess on the outer ring, and the stroke channel communicates with another driving recess.

[0023] Furthermore, the trend of the inlet flow channel of the core body is a logarithmic spiral line extending from the middle to the outside. The pole of the logarithmic spiral line is set on the central axis of the core body, and the trend angle of the logarithmic spiral line is 15° - 45°.

[0024] Further, an inflow channel is provided on the core body, and its trend is a logarithmic spiral extending from the middle to the outside. The trend of the stroke channel of the secondary impact channel is a logarithmic spiral, and the trend of the logarithmic spiral of the stroke channel of the secondary impact channel is substantially the same as that of the logarithmic spiral of the inflow channel.

[0025] Further, the hydrodynamic device further includes a shaft, and the outer ring is coaxially arranged with the core body on the shaft.

[0026] Further, the hydrodynamic device further includes a shaft, and the outer ring is coaxially arranged with the core body on the shaft. Inlet and outlet flow channels are provided on the shaft and are respectively communicated with the inflow channel and the discharge channel of the core body.

[0027] The inlet and outlet flow channels in the shaft form an inlet and an outlet, and the inlet and outlet flow channels are of a non-connected structure.

[0028] Further, the outer ring is cooperated with the shaft through side plates to form a closed space, and the core body is arranged in the closed space and is fixedly connected to the shaft.

[0029] Further, the inflow channel, the nozzle, the driving recess, the secondary impact channel, the discharge port and the discharge channel in the independent work unit constitute a fluid flow path.

[0030] Further, two or more independent work units are included in the hydrodynamic device to form a multi-stage driving structure, and are arranged along the circumferential direction of the core body or the outer ring.

[0031] Further, more than 2 driving recesses are arranged on the inner ring surface of the outer ring. Each driving recess has a contour bottom surface and a driving surface. The contour line of the contour bottom surface is a logarithmic spiral, and its pole is set at the center of the core body.

[0032] Further, a drill bit is further provided on the rotating device, and the mounting base is arranged on the lifting arm of a moving device.

[0033] Further, a working device is further included. The working device is movably arranged on the rotating device in the front-back direction, and a vibration damping component is further arranged between the rotating device and the working device; preferably, the vibration damping component is a vibration damping spring.

[0034] The fluid-driven tunneling device of the present invention uses a fluid, such as hydraulic oil, water or compressed air, as an energy source to drive the movement of the rotating device. Its structure is simple, with large torque, high speed, high transmission efficiency, and low energy consumption, and can well meet the requirements of the tunneling device for torque, speed and running stability.

[0035] The hydrodynamic device of the present invention has the following beneficial effects on the fluid tunneling device:

[0036] 1. The multi-stage flow channels provided in the core body of the present invention, that is, the inlet flow channel serves as the first-stage flow channel, and each impact flow channel serves as the second, third, fourth... stage flow channels. The fluid acts on the driving recesses on the outer ring from the first-stage flow channel. The driving recesses communicate with the second-stage flow channel, then return to the second-stage flow channel and act on another driving recess on the outer ring, and so on until the fluid is discharged from the drainage channel. The whole process proceeds in the forward direction along the rotation direction of the outer ring, with large torque, high transmission efficiency, high fluid utilization rate, and the output torque further increases with the increase of the rotational speed, meeting the rotational requirements of the rotating device.

[0037] 2. The flow channels circumferentially arranged on the core body of the present invention effectively reduce the volume of the overall device and can be flexibly matched with power generation or output devices in various fields. At the same time, the more inlet flow channels are provided on the core body, the lower the overall weight, further improving the output speed and efficiency of the device; the rotational torque is higher and the tunneling effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a partial front view of the fluid tunneling device according to the first embodiment of the present invention;

[0039] Figure 2 is a side view of the fluid tunneling device according to the first embodiment of the present invention installed on a crawler mobile device;

[0040] Figure 3 is a schematic diagram of the fluid power device according to the first embodiment of the present invention.

[0041] Figure 4 is a side view of the fluid power device according to the first embodiment of the present invention in the axial direction of shaft A.

[0042] Figure 5 is a side view of the fluid power device according to the first embodiment of the present invention in the axial direction of shaft B.

[0043] Figure 6 is a sectional view of the fluid power device according to the first embodiment of the present invention.

[0044] Figure 7 is another layout diagram of the fluid power device according to the first embodiment of the present invention.

[0045] Figure 8 is a schematic diagram of the fluid power device according to the second embodiment of the present invention.

[0046] Figure 9 is a side view of the fluid power device according to the second embodiment of the present invention in the axial direction of shaft C.

[0047] Figure 10 is a side view of the fluid power device according to the second embodiment of the present invention in the axial direction of shaft D.

[0048] Figure 11 is a radial sectional view of the fluid power device according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with the accompanying drawings:

[0050] Embodiment 1:

[0051] Combination Figure 1 and Figure 2 As shown, this embodiment provides a fluid-driven excavation device, which includes a mounting base 5 having a through hole, a rotating device 7 rotatably provided in the through hole, and two fluid power devices 9 are arranged on the mounting base 5 and are respectively connected to the rotating device 7 in transmission.

[0052] The front end of the rotating device is provided with a working device 8. In this embodiment, the working device 8 is a drill bit for drilling holes in ore. The mounting base 5 is provided on a lifting arm of a crawler-type mobile device 6, and the tilt angle can be adjusted. The lifting arm is also provided with a pull-down cylinder 71, which acts on the upper end 72 of the rotating device 7 to press the working device 8 down.

[0053] See also Figures 3 to 6 The fluid power device of this embodiment includes an outer ring 1, whose inner ring surface is circumferentially provided with a plurality of driving recesses 11, and the outer ring 1 is in transmission connection with the transmission mechanism 8; a core body 3, which is coaxially arranged in the outer ring 1 and can rotate relative to the outer ring, and the outer ring surface of the core body 3 is provided with at least one nozzle 301, at least one outlet 302, and at least one flushing channel 300 located between the nozzle and the outlet; the fluid used in the fluid power device is usually a Newtonian fluid or a non-Newtonian fluid, and Newtonian fluid is usually selected, including a gas fluid or a liquid fluid, and the fluid pressure input to the power device can be generated by a compressor (such as a hydraulic pump or a pneumatic pump), a container for compressed fluid (such as a high-pressure gas cylinder), or from the environment (such as water flow, wind flow), etc.

[0054] At least one inlet channel 31, which is connected to at least one nozzle 301, and the pipeline of the inlet channel 31 is connected to the high-pressure gas source or hydraulic source of the crawler-type walking device 6 for passing fluid;

[0055] and at least one drainage channel 310 communicating with at least one drainage port 302;

[0056] The fluid enters from the inlet channel 31, and is ejected step by step through the nozzle 301 of the core body 3 and the secondary flushing channel 300, acting on at least two driving recesses 11 on the circumference of the outer ring 1, generating thrust on these driving recesses 11 to drive the outer ring 1 to rotate and do work, realizing continuous power output, and finally, the fluid is discharged through the discharge port of the core body 3 and the discharge channel. The fluid power device also includes a shaft 2, and the outer ring 1 and the core body 3 are coaxially arranged on the shaft 2.

[0057] As shown Figure 6 in the figure, an inlet flow channel 31 and an outlet flow channel 310 are formed in the core body 3. The nozzle 301 and the secondary flow channel 300 on the core body 3 are communicated with the driving recess 11 corresponding to the outer ring 1. Among them, the secondary flow channel 300 and the corresponding driving recess 11 are arranged in a staggered manner and communicated in sequence. The secondary flow channel 300 is arranged along the circumferential direction of the core body or the outer ring.

[0058] As shown Figure 6 in the figure, the core body 3 includes: an inlet flow channel 31, which forms a nozzle 31 on the circumferential surface of the core body. Its trend is an arc line extending from the middle to the outside. The nozzle 301 is communicated with the driving recess 11 corresponding to the outer ring to form a first-stage flow channel;

[0059] The secondary flow channel 300 has a trend of an arc line that bends from the edge of the core body 3 inward and then to the edge. Each secondary flow channel 300 is communicated with the two front and rear driving recesses 11 corresponding to the outer ring 1, forming an N-stage flow channel along the circumferential direction of the core body, where N is a natural number greater than or equal to 2. It should be noted that: here, if it is a 2-stage flow channel, it includes the first-stage flow channel (inlet flow channel) and the second-stage flow channel (primary secondary flow channel); if it is a 3-stage flow channel, it includes the first-stage flow channel (inlet flow channel), the second-stage flow channel (primary secondary flow channel), and the third-stage flow channel (another secondary flow channel),...

[0060] Each stage of the flow channel and the corresponding driving recess of the outer ring cooperate to form a multi-stage stroke structure with decreasing fluid energy.

[0061] According to the requirements of the load, the fluid power device can be designed. The core body 3 can be provided with a 2-stage flow channel, a 3-stage flow channel, or more stages of inlet flow channels. Each stage performs cyclic work, and the energy is fully utilized to maximize the use efficiency to meet the requirements of output torque and rotational speed.

[0062] As shown Figure 7 in the figure is a schematic diagram of a 4-stage flow channel. After the compressed fluid enters from the first-stage flow channel 311, it passes through the second, third, and fourth-stage flow channels 312, 313, and 314, and is ejected to act on the corresponding driving recess 11, and finally the fluid is output through the outlet flow channel 310; Figure 6 in the figure is a schematic diagram of a 5-stage inlet flow channel. The working process is similar to that of Figure 7 the schematic diagram. As shown Figure 7 in the figure, the secondary flow channel 300 includes a return channel and a corresponding stroke channel. As shown Figure 7 in the figure, the return channel 3131 and the corresponding stroke channel 3132 in the third-stage flow channel. The return channel 3131 is communicated with the driving recess corresponding to the outer ring, and the stroke channel 3132 is communicated with another driving recess.

[0063] Please refer to Figure 3, the hydrodynamic device further includes a shaft 2. The outer ring 1 and the core body 3 are coaxially arranged on the shaft 2. The shaft 2 is provided with inlet and outlet flow channels 21 and 210 respectively communicating with the inlet flow channel 31 and the discharge flow channel 310 of the core body 3. The inlet and outlet flow channels in the shaft form an inlet and an outlet, and the inlet and outlet flow channels are non-connected structures. The outer ring 1 is cooperated with the shaft 2 through side plates 41 and 42 to form a closed space, and the core body 3 is arranged in the closed space and fixedly connected to the shaft 2. In the present invention, the core body 3 is provided with at least two stages of flow channels, and each stage of flow channel communicates with the corresponding driving concave part of the outer ring, and finally the fluid is discharged through the discharge flow channel.

[0064] Please refer to Figure 3 , in the present invention, the core body 3 can be formed by the cooperation of a left core body and a right core body. The inlet flow channel 31 and the discharge flow channel 310 are provided on the mating surface of the left and right core bodies. The core body 3 can also be integrally cast.

[0065] Please refer to Figure 3 、 Figure 6 , in this embodiment, it is a first-stage driving structure. One fluid channel is circumferentially arranged on the core body 3 to form a first-stage driving structure. The fluid channel is also called an independent work unit. One inlet flow channel 31, one nozzle 301, at least two driving concave parts 11, at least one secondary impulse channel 300, one discharge port 302 and one discharge flow channel 310 on the core body 3 and the outer ring 1 form an independent work unit. The hydrodynamic device includes at least one independent work unit. In the independent work unit, the inlet flow channel 31, the nozzle 301, the driving concave part 11, the secondary impulse channel 300, the discharge port 302 and the discharge flow channel 310 constitute a fluid flow path.

[0066] Please refer to Figure 3 、 Figure 6 or Figure 7 , in the present invention, there are more than two driving concave parts 11 arranged on the inner ring surface of the outer ring 1. Each driving concave part has a contour bottom surface 111 and a driving surface 112. The contour line of the contour bottom surface 111 can be a common arc line or a spiral line. When the contour line of the contour bottom surface is a logarithmic spiral line, its pole is set on the shaft. Each driving concave part 11 communicates with the adjacent stage of flow channels at the same time so that the fluid entering from the previous stage of flow channels is output by the next stage of flow channels.

[0067] In the present invention, the running direction of the inlet flow channel of the core body 3, that is, the first-stage flow channel, can be a common arc line or a spiral line, and the running direction of the stroke channels in each secondary impulse channel, that is, the Nth-stage flow channel, can also be a common arc line or a spiral line.

[0068] Such as Figure 6 and Figure 7, on the core 3 of the present invention, there is an inflow channel 31, whose direction is a logarithmic spiral extending from the middle to the outside. The direction of the stroke channel of the secondary impinging channel 300 is a logarithmic spiral, and the direction of the logarithmic spiral of the stroke channel of the secondary impinging channel is substantially the same as that of the logarithmic spiral of the inflow channel. The direction of the inflow channel of the core 3 is a logarithmic spiral extending from the middle to the outside. The pole of this logarithmic spiral is set on the central axis of the core. The logarithmic spiral direction angle is 15° - 45°. The smaller the angle, the longer the flow channel and the more losses; the larger the angle, the smaller the tangential component force driving the outer ring.

[0069] Please refer to Figure 3 , Figure 4 and Figure 5 , in the shaft 2 of the present invention, the inlet and outlet flow channels 21, 210 form an inlet and an outlet, and the inlet and outlet flow channels are of a non-connected structure. The inlet and outlet of the shaft can be set at one end of the shaft or at both ends of the shaft. The inlet flow channel 21 communicates with the inflow channel 31 of the core. The outlet of the shaft extends axially to form an outlet flow channel 210, and the outlet flow channel communicates with the discharge channel 310 of the core.

[0070] The fluid power device involved in this application refers to a device that can convert fluid energy into mechanical rotation. In addition to the necessary outer ring, core and their corresponding concave structure or flow channel structure design, the device can also additionally include other components; for example, it can additionally include a housing and a sealing structure for providing external protection, and for another example, it can additionally include a coupling for providing torque transmission, etc. Among them, the specific form of the outer ring can vary according to different mechanical rotation output methods. For example, an external tooth-shaped structure is formed on the outside of the outer ring to facilitate the output of kinetic energy through the way of gear transmission; for another example, the outer ring has a pulley groove to output kinetic energy through the way of belt transmission; for still another example, the outer ring has a mounting flange, which can be conveniently installed with a coupling to output kinetic energy; and so on. The materials of the core and the outer ring are made of hard materials, not limited to metals, metal alloys, plastics, composite materials. The processing methods of the concave structure or flow channel structure of the core and the outer ring can be realized by all known production means, including but not limited to die casting, forging, extrusion, 3D printing, etc. The fluid pressure input to this power device can be generated by a compressor (such as a hydraulic pump or a pneumatic pump), a container for compressing fluid (such as a high-pressure gas cylinder), or sourced from the environment (such as water flow, wind flow), etc.

[0071] Figure 3 and Figure 6 It should be noted in and that although the inflow channel 31, the discharge channel 310 of the core, the inlet flow channel 21, and the outlet flow channel 210 do not correspond according to the drawing rules, for the purpose of vivid illustration, Figure 3 in , the inflow channel and the discharge channel of the core refer to the inflow channel and the discharge channel. In Embodiment 2, Figure 8 and Figure 11 Similar schematic diagrams like this.

[0072] Example 2:

[0073] The fluid-driven tunneling device of this example is basically the same as that of Example 1, and the main difference is that:

[0074] Please refer to Figures 8 to 11 , the fluid power device includes 2 independent working units to form a two-stage drive structure, that is, 2 fluid channels are arranged circumferentially on the core body 3, and each fluid channel includes an inlet channel 31 with more than 1 order and a secondary impulse channel 300 and is arranged circumferentially along the core body 3 and a discharge channel. The fluid power device includes an outer ring 1, and a plurality of drive recesses 11 are provided on the inner circumferential surface of the outer ring in the circumferential direction; a core body 3, which is coaxially arranged inside the outer ring 1 and can rotate relative to the outer ring, and two groups of nozzles, discharge ports are provided on the outer circumferential surface of the core body, and at least one secondary impulse channel is provided between each group of nozzles and discharge ports; two inlet channels 31, 32 are provided on the core body, which are correspondingly connected to the nozzles; and two discharge channels 310, 320, which are correspondingly connected to the discharge ports; two streams of fluid enter from the two inlet channels of the core body respectively, and are ejected step by step through the nozzles of the core body 3 and the secondary impulse channels 300, acting on the corresponding drive recesses 11 on the circumference of the outer ring, generating a thrust to push the outer ring 1 to rotate and do work, realizing power output. Finally, the fluid is discharged through the discharge ports of the core body and through the discharge channels. The above-mentioned one inlet channel, one nozzle, the corresponding number of drive recesses and the corresponding secondary impulse channels, discharge ports and one discharge channel form an independent working unit.

[0075] The fluid power device further includes a shaft 2, the outer ring 1 and the core body 3 are coaxially arranged on the shaft, and inlet shaft channels 21, 22 and outlet shaft channels 210, 220 are provided on the shaft 2 and are respectively connected to the inlet channels 31, 32 and the discharge channels 310, 320 of the core body. Two inlet ports and two outlet ports corresponding to the fluid channels are provided on the shaft 2; compressed fluid enters from the two inlet ports of the shaft 2, is ejected through the inlet channels of the core body 3 and acts on the drive recesses 11 of the outer ring 1, generating a thrust to push the outer ring 1 to rotate and do work. Finally, the compressed fluid returns to the corresponding outlet ports through the discharge channels of the core body 3, realizing continuous power output. Other structures are the same as those in Example 1 and will not be described in detail.

[0076] Example 3:

[0077] This embodiment is basically the same as the first embodiment, and the main difference is that the fluid power device of the present invention includes 4 or more independent working units to form a multi-stage driving structure, and 3 or more fluid channels are arranged circumferentially on the core body, and each fluid channel includes more than one inlet channel and secondary flow channel and a discharge channel arranged circumferentially along the core body, and the inlet channel and the discharge channel are arranged on the mating surfaces of the left and right core bodies. The shaft is provided with inlet channels and outlet channels corresponding to the number of fluid channels, and the compressed fluid enters from the inlet channel of the shaft, and is ejected through the inlet channel of the core body to act on the driving recess of the outer ring, pushing the outer ring to rotate and do work, thereby realizing continuous power output, and finally the compressed fluid returns to the corresponding outlet channel through the discharge channels of the core body. The other structures are the same as those in the first embodiment.

[0078] Of course, the fluid-driven excavation device in this embodiment has a fluid power device and a rotating device connected via a transmission mechanism. Those skilled in the art should understand that in other specific embodiments, the rotating device can also be integrally formed on the outer ring of the fluid power device, or the rotating device can be directly connected to the outer ring of the fluid power device, both of which can achieve the technical effect of this embodiment; in other real-time modes, the working device can be movably arranged on the rotating device along the axial direction of the rotating device, and then, a vibration reduction assembly is also provided between the rotating device and the working device for excavation operations in an impact manner.

[0079] The above records are only embodiments of the present invention. Any modification or change made by a person familiar with the present technology using the present invention shall fall within the patent scope claimed by the present invention and shall not be limited to those disclosed in the embodiments.

Claims

1. A fluid-driven tunneling device, characterized in that: Comprising an installation base, on which a rotating device and a hydrodynamic device for driving the rotating device are provided, and the hydrodynamic device includes: An outer ring, on the inner circumferential surface of which a plurality of driving recesses are provided in the circumferential direction; each driving recess has a contour bottom surface and a driving surface, and the contour line of the contour bottom surface is a logarithmic spiral, and its pole is set at the center of the core; A core, which is coaxially arranged inside the outer ring and can rotate relative to the outer ring. At least one nozzle, at least one discharge port, and at least one secondary flow channel located between the nozzle and the discharge port are provided on the outer circumferential surface of the core; At least one inlet channel, which communicates with at least one nozzle; its trend is an arc line extending from the middle to the outside, and the nozzle communicates with the corresponding driving recess of the outer ring to form a first-stage flow channel; and at least one discharge channel, which communicates with at least one discharge port; The inlet channel and the discharge channel are formed in the core. The nozzle and the secondary flow channel on the core communicate with the corresponding driving recess of the outer ring, and the secondary flow channel is arranged along the circumferential direction of the core or the outer ring; the trend of the inlet channel is a logarithmic spiral extending from the middle to the outside, and the pole of the logarithmic spiral is set on the central axis of the core, and the logarithmic spiral trend angle is 15°-45°; The secondary flow channel, its trend is an arc line that bends and extends from the edge of the core inward and then to the edge. Each secondary flow channel communicates with the two adjacent driving recesses corresponding to the outer ring, and forms an N-stage flow channel along the circumferential direction of the core, where N is a natural number greater than or equal to 2; each stage of the flow channel cooperates with the corresponding driving recess of the outer ring to form a multi-stage stroke structure with decreasing fluid energy; The fluid enters from the inlet channel, is ejected step by step through the nozzle and the secondary flow channel of the core, acts on at least two driving recesses on the circumference of the outer ring, generates a thrust on these driving recesses to push the outer ring to rotate and do work, and realizes power output. Finally, the fluid is discharged through the discharge port of the core and through the discharge channel.

2. The fluid-driven tunneling device according to claim 1, wherein: At least one inlet channel, at least one nozzle, at least two driving recesses, at least one secondary flow channel, at least one discharge port, and at least one discharge channel form an independent working unit, and the hydrodynamic device includes at least one independent working unit.

3. The fluid-driven tunneling device according to claim 1, wherein: The hydrodynamic device further includes a shaft, the outer ring and the core are coaxially arranged on the shaft, and inlet and outlet flow channels are opened on the shaft and communicate with the inlet channel and the discharge channel of the core respectively.

4. The fluid-driven tunneling device according to claim 2, characterized in that: The hydrodynamic device includes more than two independent working units to form a multi-stage driving structure, and is arranged along the circumferential direction of the core or the outer ring.

5. The fluid-driven tunneling device according to any one of claims 1 to 4, characterized in that: A drill bit is further provided on the rotating device, and the installation base is arranged on the lifting arm of a moving device.

6. The fluid-driven tunneling device according to any one of claims 1 to 4, characterized in that: It further includes an operating device, the operating device is movably arranged on the rotating device, and a vibration damping component is further arranged between the rotating device and the operating device.

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