An oscillating jet hydraulic impactor

Abstract

The present invention provides an oscillating jet hydraulic impactor, comprising an upper joint, an outer tube and a lower joint connected in sequence; an oscillator, a distribution assembly, a cylinder body, a piston and the like are arranged in the outer tube; through the arrangement of the internal oscillator, the distribution seat, the cylinder body, the piston and the like, and the distribution of each flow channel and the signal channel, based on the characteristics of the oscillator itself, when the piston returns, the piston can be buffered and decelerated by switching the fluid pressure, and then move in the opposite direction to generate an impact process; the whole process is automatically switched based on the position of the signal channel and the piston, without the need for active control, and without the need for setting an elastic structure and the like for buffering, thereby reducing wearing parts, improving service life, and ensuring impact efficiency; an emptying structure is further arranged, which can automatically empty the internal fluid under the corresponding stroke to avoid affecting the circulation of the drilling fluid, and can complete the cooling of the drill bit and the cleaning of the bottom of the hole.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic impactors, and in particular to an oscillating jet hydraulic impactor. Background Art

[0002] With the large-scale exploration and evaluation of deep earth resources and the exploration, development and utilization of unconventional energy, the phenomenon of drilling into various hard and complex formations has occurred frequently, which has put forward new requirements for drilling technology and equipment. From the perspective of rock crushing theory, impact rotary drilling technology is one of the most effective methods to solve the problem of hard rock drilling today. As a kind of impact rotary drilling tool, the hydraulic impactor uses mud as the driving medium and has been successfully applied in the fields of solid mineral exploration, oil and gas drilling, geothermal drilling, etc. After years of continuous theoretical and experimental research, the structure of the hydraulic impactor has been continuously improved, but it still faces problems such as complex structure, easy erosion, short life, and low impact work, and has not been widely promoted and applied. Therefore, the development of a hydraulic impactor with simple structure, few wearing parts, high impact power and long life is of great significance for shortening the drilling construction cycle, reducing underground accidents and reducing engineering construction costs.

[0003] The hydraulic jet impactor disclosed in the prior art adds an energy storage mechanism between the piston rod and the cylinder body, such as an elastic energy storage mechanism, which converts the kinetic energy of the piston during the return stroke into potential energy and stores it in the energy storage mechanism, thereby increasing the impact force of the stroke and avoiding the waste of return energy, slowing down the impact of the piston rod on the rear end of the cylinder body, and extending the service life of the jet impactor. However, the elastic energy storage mechanism is a consumable part, and its service life is still not high during the frequent operation cycle of the hydraulic impactor, and further improvement is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic impactor without elastic energy storage mechanism, with fewer wearing parts and high impact efficiency and reliability in view of the shortcomings of the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention provides an oscillating jet hydraulic impactor, comprising an upper joint, an outer tube and a lower joint connected in sequence;

[0006] The upper joint is provided with an upper joint central flow channel, an oscillator is provided in the outer tube, and the oscillator is provided with a nozzle, a nozzle central flow channel, an oscillator first signal channel, an oscillator second signal channel, a fluid first wall channel, and a fluid second wall channel; the nozzle central flow channel is connected with the upper joint central flow channel, the nozzle is connected with the nozzle central flow channel, the oscillator first signal channel and the oscillator second signal channel are symmetrically distributed on both sides below the nozzle and are connected with the nozzle;

[0007] A flow distribution component is sleeved inside the outer tube, and the flow distribution component is provided with a first input channel of the flow distribution component, a second input channel of the flow distribution component, a first signal channel of the flow distribution component and a second signal channel of the flow distribution component. The first input channel of the flow distribution component is communicated with the first wall-attached channel of the fluid, the second input channel of the flow distribution component is communicated with the second wall-attached channel of the fluid, the first signal channel of the flow distribution component is communicated with the first signal channel of the oscillator, and the second signal channel of the flow distribution component is communicated with the second signal channel of the oscillator; the flow distribution component is provided with a first circular arc cavity, and the first input channel of the flow distribution seat is communicated with the first circular arc cavity;

[0008] The flow distribution component is provided with a piston, and the piston can move along the flow distribution component. The flow distribution component and the piston are also provided with a cylinder body outside. The space between the cylinder body, the flow distribution component and the piston is divided into a piston front chamber and a piston rear chamber. The fluid in the piston front chamber acts on the piston fluid front action surface, and the fluid in the piston rear chamber acts on the piston fluid rear action surface.

[0009] The cylinder body is provided with a second circular arc cavity, a first signal channel of the cylinder body and a second signal channel of the cylinder body, the second circular arc cavity is communicated with the first circular arc cavity, the first signal channel of the cylinder body is communicated with the first signal channel of the distribution component, the second signal channel of the cylinder body is communicated with the second signal channel of the distribution component, the second circular arc cavity, the first signal channel of the cylinder body and the second signal channel of the cylinder body are all connected to different height positions inside the cylinder body, and during the upward movement of the piston, the first signal channel of the cylinder body can be blocked and the second signal channel of the cylinder body can be opened, and during the downward movement of the piston, the first signal channel of the cylinder body can be opened and the second signal channel of the cylinder body can be blocked;

[0010] The lower joint is matched with the bottom of the piston.

[0011] Furthermore, the oscillator includes an oscillator substrate and an oscillator cover, the oscillator substrate and the oscillator cover are connected by bolts, a first fluid wall surface and a second fluid wall surface are distributed below the first signal channel of the oscillator and the second signal channel of the oscillator, a guide block is arranged between the first fluid wall surface and the second fluid wall surface, the first fluid wall channel is formed between the first fluid wall surface and the guide block, and the second fluid wall channel is formed between the second fluid wall surface and the guide block.

[0012] Furthermore, the flow distribution component includes a flow distribution seat and a flow distribution pipe; the first input channel of the flow distribution component and the second input channel of the flow distribution component are respectively the first input channel of the flow distribution seat and the second input channel of the flow distribution seat and are located in the flow distribution seat; the first signal channel of the flow distribution component and the second signal channel of the flow distribution component are respectively the first signal channel of the flow distribution seat and the second signal channel of the flow distribution seat and are located in the flow distribution seat; the first circular arc cavity is arranged in the flow distribution seat; the piston cooperates with the flow distribution pipe.

[0013] Furthermore, when the first signal channel of the cylinder is opened, it is communicated with the rear cavity of the piston; when the second signal channel of the cylinder is opened, it is communicated with the front cavity of the piston; and the second arc cavity remains connected with the rear cavity of the piston.

[0014] Furthermore, a fan-shaped cross-section channel is provided between the cylinder body and the outer tube, and the fan-shaped cross-section channel is communicated with the second input channel of the distribution seat and the piston front chamber.

[0015] Furthermore, a plurality of guide blocks are arranged in the lower joint, and the guide blocks cooperate with the piston.

[0016] Furthermore, it also includes an emptying structure, which is used to empty the internal fluid during the circulation process.

[0017] Further, the oscillator is provided with an oscillator exhaust channel, which is connected to the first fluid wall and the second fluid wall channel, the flow distribution component is provided with a flow distribution component exhaust channel, which is connected to the flow distribution component exhaust channel, and the piston is provided with a piston center exhaust channel, which is connected to the flow distribution component exhaust channel.

[0018] The above scheme of the present invention has the following beneficial effects:

[0019] The oscillating jet hydraulic impactor provided by the present invention, through the arrangement of an internal oscillator, a flow distribution seat, a cylinder body, a piston, etc., and the distribution of each flow channel and a signal channel, can buffer and decelerate the piston by switching the fluid pressure when the piston returns based on the characteristics of the oscillator itself, and then move in the opposite direction to generate an impact process. The entire process is automatically switched based on the position of the signal channel and the piston, without the need for active control or the provision of an elastic structure for buffering, thereby reducing wearing parts, improving service life, and ensuring impact efficiency.

[0020] The oscillating jet hydraulic impactor provided by the present invention is further provided with an emptying structure, which can automatically empty the internal fluid under the corresponding stroke to avoid affecting the circulation of the drilling fluid, and can also complete the cooling of the drill bit and the cleaning of the bottom of the hole;

[0021] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 for Figure 1 Middle AA section;

[0024] Figure 3 for Figure 1 Middle BB section;

[0025] Figure 4 for Figure 1 Middle CC section;

[0026] Figure 5 for Figure 1 Middle DD section;

[0027] Figure 6 for Figure 1 Middle EE section;

[0028] Figure 7 for Figure 1 Middle FF section;

[0029] Figure 8 for Figure 1 Middle GG section;

[0030] Fig. 9 for Figure 1 Middle HH section;

[0031] Fig.10 for Figure 1 Middle II section;

[0032] Fig.11 for Figure 1 Middle JJ cross-section.

[0033] [Description of Reference Numerals]

[0034] 1-upper joint; 2-first sealing ring; 3-oscillator; 4-nozzle; 5-bolt; 6-first wall surface of fluid; 7-second wall surface of fluid; 8-flow guide block; 9-second sealing ring; 10-third sealing ring; 11-arc sealing ring; 12-flow distribution seat; 13-piston fluid rear action surface; 14-cylinder body; 16-flow distribution pipe; 17-piston; 18-outer tube; 19-piston fluid front action surface; 22-lower joint; 23-guide block, 24-fourth sealing ring; 25-first signal sealing ring; 26-second signal sealing ring; 27-third signal sealing ring; 28-fourth signal sealing ring, 29-oscillator substrate; 30-oscillator cover;

[0035] Ⅰ-first signal channel of oscillator; Ⅱ-second signal channel of oscillator; Ⅲ-radial exhaust channel of oscillator; Ⅳ-first wall channel of fluid; Ⅴ-second wall channel of fluid; Ⅵ-first input channel of distributor; Ⅶ-second input channel of distributor; Ⅷ-first circular arc channel; Ⅸ-piston rear chamber; X-fan-shaped cross-section channel; XI-central exhaust channel of distributor; XII-piston front chamber; XIII-central exhaust channel of piston; XV-axial exhaust channel of oscillator; XVI-central flow channel of upper joint; XVII-central flow channel of nozzle; XVIII-first signal channel of distributor; XIX-first signal channel of cylinder body; XX-second signal channel of distributor; XXI-second signal channel of cylinder body; XXII-axial exhaust channel of distributor; XXIII-second circular arc channel. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a locking connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figure 1-Figure 11As shown, an embodiment of the present invention provides an oscillating jet hydraulic impactor, comprising an upper joint 1, an outer tube 18, and a lower joint 22. The upper joint 1 is threadedly connected to the outer tube 18, and an upper joint central flow channel XVI is provided at the center of the upper joint 1. An oscillator 3 is provided inside the outer tube 18, and the upper end of the oscillator 3 is connected to the upper joint central flow channel XVI (or the upper end of the oscillator 3 extends to the inside of the upper joint central flow channel XVI), and a first sealing ring 2 is provided at the connection point to seal the gap.

[0040] The oscillator 3 is a symmetrical structure, including an oscillator substrate 29 and an oscillator cover 30. The oscillator substrate 29 and the oscillator cover 30 are firmly connected by bolts 5 to enclose the nozzle 4, the nozzle center flow channel XVII, the oscillator first signal channel I and the oscillator second signal channel II, etc. Among them, the nozzle center flow channel XVII is connected to the upper joint center flow channel XVI, and the nozzle 4 is connected to the nozzle center flow channel XVII. The oscillator first signal channel I and the oscillator second signal channel II are long grooves and are distributed on the left and right sides below the nozzle 4 and are connected to the nozzle 4.

[0041] A first fluid wall surface 6 and a second fluid wall surface 7 are distributed on the left and right below the first signal channel I of the oscillator and the second signal channel II of the oscillator. A guide block 8 is arranged between the first fluid wall surface 6 and the second fluid wall surface 7. A first fluid wall channel IV is formed between the first fluid wall surface 6 and the guide block 8. A second fluid wall channel V is formed between the second fluid wall surface 7 and the guide block 8. The first fluid wall channel IV is communicated with the second fluid wall channel V.

[0042] Below the oscillator 3, the outer tube 18 is provided with a flow distribution seat 12, and a second sealing ring 9, a third sealing ring 10, a fourth sealing ring 24, a first signal sealing ring 25 and a second signal sealing ring 26 are provided between the oscillator 3 and the flow distribution seat 12, so as to seal and connect all the flow channels of the oscillator 3 and the flow distribution seat 12. The flow distribution seat 12 itself is provided with a first input channel VI of the flow distribution seat, a second input channel VII of the flow distribution seat, a first signal channel XVIII of the flow distribution seat and a second signal channel XX of the flow distribution seat. The first wall-attached channel IV of the fluid is connected to the first input channel VI of the flow distribution seat, the second wall-attached channel V of the fluid is connected to the second input channel VII of the flow distribution seat, the first signal channel I of the oscillator is connected to the first signal channel XVIII of the flow distribution seat, and the second signal channel II of the oscillator is connected to the second signal channel XX of the flow distribution seat. The distribution seat is also provided with a first circular arc cavity VIII, the cross-sectional area of ​​which is close to the cross-sectional area of ​​the first input channel VI of the distribution seat to maintain the stability of the fluid. The first input channel VI of the distribution seat is connected with the first circular arc cavity VIII, and the second input channel VII of the distribution seat is opened through the distribution seat 12 by radial perforations and is connected with the flow channel outside the distribution seat 12.

[0043] The bottom of the flow distribution seat 12 is connected with a flow distribution pipe 16 (which can be formed in one piece), and a piston 17 is mounted on the outside of the flow distribution pipe 16, and the piston 17 can move along the flow distribution pipe 16. At the same time, the cylinder body 14 is also mounted on the outside of the flow distribution pipe 16 and the piston 17. It should be noted that the space between the cylinder body 14 and the flow distribution pipe 16 and the piston 17 is divided into a piston front chamber XII and a piston rear chamber IX. The fluid in the piston front chamber XII acts on the piston fluid front action surface 19, and the fluid in the piston rear chamber IX acts on the piston fluid rear action surface 13. The connection position between the cylinder body 14 and the flow distribution seat 12 is provided with an arc sealing ring 11 for sealing the gap at the position of the first arc cavity VIII, and the third signal sealing ring 27 and the fourth signal sealing ring 28 are used to seal the gaps at the positions of the first signal channel XVIII and the second signal channel XX of the flow distribution seat, so that the flow channel of the flow distribution seat 12 is finally sealed and connected with the flow channel of the cylinder body 14.

[0044] The cylinder 14 itself is also provided with a second arc cavity XXIII, a first signal path XIX of the cylinder and a second signal path XXI of the cylinder. The second arc cavity XXIII is connected with the first arc cavity VIII, the first signal path XIX of the cylinder is connected with the first signal path XVIII of the valve distributor, and the second signal path XXI of the cylinder is connected with the second signal path XX of the valve distributor. At the same time, the second arc cavity XXIII, the first signal path XIX of the cylinder and the second signal path XXI of the cylinder are all connected to different height positions inside the cylinder 14, and the piston 17 adopts a variable diameter setting. In the process of the piston 17 moving upward, the first signal path XIX of the cylinder can be blocked and the second signal path XXI of the cylinder can be opened; in the process of the piston 17 moving downward, the first signal path XIX of the cylinder can be opened and the second signal path XXI of the cylinder can be blocked. When the first signal path XIX of the cylinder is opened, it is connected with the rear cavity IX of the piston; when the second signal path XXI of the cylinder is opened, it is connected with the front cavity XII of the piston. The second arc cavity XXIII is connected to the piston rear cavity IX. A fan-shaped cross-section channel X is also provided between the cylinder body 14 and the outer tube 18. The fan-shaped cross-section channel X is connected to the second input channel VII of the valve seat and the piston front cavity XII through radial perforations.

[0045] The lower joint 22 is arranged below the outer tube 18 and is threadedly connected to the outer tube 18. At the same time, the lower joint 22 is sleeved on the lower part of the piston 17. More than three guide blocks 23 are evenly distributed in the lower joint 22, and the guide blocks 23 play a guiding and straightening role on the movement of the piston 17. Obviously, the entire jet-type hydraulic impactor encapsulates the internal parts into a whole through the upper joint 1, the outer tube 18 and the lower joint 22.

[0046] With the oscillating jet hydraulic impactor provided in this embodiment, drilling mud or clean water flows in from the central flow channel XVI of the upper joint, enters the nozzle 4 through the central flow channel XVII of the nozzle, and forms a jet after acceleration. Due to the Coanda wall effect, the jet will attach to the first wall surface 6 of the fluid or the second wall surface 7 of the fluid, and enter the first wall channel IV of the fluid or the second wall channel V of the fluid. Since the first signal channel XIX of the cylinder body is connected with the piston rear chamber IX in the initial state, the outlet of the second signal channel XXI of the cylinder body is blocked by the piston 17, there is feedback fluid at the first signal channel XIX of the cylinder body, and there is no fluid feedback at the second signal channel XXI of the cylinder body, so that the jet stably attaches to the second wall surface 7 and enters the second wall channel V of the fluid. The fluid flowing into the second wall channel V of the fluid passes through the second input channel VII of the distribution seat and the fan-shaped cross-section channel X, and finally flows to the front chamber XII of the piston. The fluid in the front chamber XII of the piston acts on the front acting surface 19 of the piston fluid, pushing the piston 17 to move upward (return stroke). When the outlet of the first signal channel XIX of the cylinder body is blocked by the piston 17, the second signal channel XXI of the cylinder body is connected with the front chamber XII of the piston. At this time, there is no fluid feedback in the first signal channel XIX of the cylinder body, and the wall of the second wall channel V of the fluid is unstable. The fluid enters the first wall channel IV of the fluid. The fluid flowing into the first wall channel IV of the fluid passes through the first input channel VI of the distribution seat, the first arc chamber VIII and the second arc chamber XXIII, and finally flows to the rear chamber IX of the piston. The fluid in the rear chamber IX of the piston acts on the rear acting surface 13 of the piston fluid, so that the piston 17 decelerates and stops upward, and then moves downward (process). When the second signal channel XXI of the cylinder body is blocked, the first signal channel XIX of the cylinder body is connected with the rear chamber IX of the piston, and the next cycle starts.

[0047] Therefore, the oscillating jet hydraulic impactor provided in this embodiment utilizes the characteristics of the oscillator 3 itself. When the piston 17 returns, it can buffer and slow down the piston 17 by switching the fluid pressure, and then move in the opposite direction to produce an impact process. The entire process is automatically switched based on the signal channel and the position of the piston 17. There is no need for active control or setting up an elastic structure for buffering, which reduces wearing parts, improves service life, and ensures impact efficiency.

[0048] As a preferred embodiment, an emptying structure is further provided in this embodiment for emptying the internal fluid during the circulation process. Specifically, the guide block 8 is provided with an oscillator radial emptying channel III, which is connected to the first wall-attached channel IV and the second wall-attached channel V of the fluid, and the fluid radial emptying channel III can also be provided one on the right side of the first wall-attached surface 6 and the left side of the second wall-attached surface 7. At the same time, an oscillator axial emptying channel XV is provided in the oscillator 3, which is connected to the oscillator radial emptying channel III. The flow distribution seat 12 is provided with a flow distribution seat central emptying channel XI and a flow distribution seat axial emptying channel XXII, and the oscillator axial emptying channel XV is connected to the flow distribution seat axial emptying channel XXII, and the flow distribution seat axial emptying channel XXII is connected to the flow distribution seat central emptying channel XI. The piston 17 is provided with a piston central emptying channel XIII, and the piston central emptying channel XIII is connected to the flow distribution seat central emptying channel XI.

[0049] When the piston 17 moves upward, the fluid in the piston rear chamber IX passes through the first signal channel XIX of the cylinder body, the first signal channel XVIII of the distribution seat, the first signal channel I of the oscillator, the radial emptying channel III of the oscillator, the axial emptying channel XV of the oscillator, the axial emptying channel XXII of the distribution seat, the central emptying channel XI of the distribution seat and the central emptying channel XIII of the piston, and finally flows to the bottom of the hole; when the piston moves downward, the fluid in the piston front chamber XII passes through the second signal channel XXI of the cylinder body, the second signal channel XX of the distribution seat, the second signal channel II of the oscillator, the radial emptying channel III of the oscillator, the axial emptying channel XV of the oscillator, the axial emptying channel XXII of the distribution seat, the central emptying channel XI of the distribution seat and the central emptying channel XIII of the piston, and finally flows to the bottom of the hole. The fluid inside the device is emptied to avoid affecting the circulation of the drilling fluid, and the cooling of the drill bit and the cleaning of the bottom of the hole can be completed at the same time.

[0050] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An oscillating jet hydraulic impactor, characterized in that: It includes an upper joint, an outer tube and a lower joint which are connected in sequence; The upper joint is provided with an upper joint central flow channel, an oscillator is provided in the outer tube, and the oscillator is provided with a nozzle, a nozzle central flow channel, an oscillator first signal channel, an oscillator second signal channel, a fluid first wall channel, and a fluid second wall channel; the nozzle central flow channel is connected with the upper joint central flow channel, the nozzle is connected with the nozzle central flow channel, the oscillator first signal channel and the oscillator second signal channel are symmetrically distributed on both sides below the nozzle and are connected with the nozzle; A flow distribution component is arranged in the outer tube, and the flow distribution component is provided with a first input channel of the flow distribution component, a second input channel of the flow distribution component, a first signal channel of the flow distribution component and a second signal channel of the flow distribution component. The first input channel of the flow distribution component is communicated with the first wall-attached channel of the fluid, the second input channel of the flow distribution component is communicated with the second wall-attached channel of the fluid, the first signal channel of the flow distribution component is communicated with the first signal channel of the oscillator, and the second signal channel of the flow distribution component is communicated with the second signal channel of the oscillator; the flow distribution component is provided with a first circular arc cavity, and the first input channel of the flow distribution component is communicated with the first circular arc cavity; The flow distribution component comprises a flow distribution seat and a flow distribution pipe; the first input channel of the flow distribution component and the second input channel of the flow distribution component are respectively the first input channel of the flow distribution seat and the second input channel of the flow distribution seat and are located in the flow distribution seat; the first signal channel of the flow distribution component and the second signal channel of the flow distribution component are respectively the first signal channel of the flow distribution seat and the second signal channel of the flow distribution seat and are located in the flow distribution seat; The flow distribution component is provided with a piston, and the piston can move along the flow distribution component. The flow distribution component and the piston are also provided with a cylinder body outside. The space between the cylinder body, the flow distribution component and the piston is divided into a piston front chamber and a piston rear chamber. The fluid in the piston front chamber acts on the piston fluid front action surface, and the fluid in the piston rear chamber acts on the piston fluid rear action surface. The cylinder body is provided with a second circular arc cavity, a first signal channel of the cylinder body and a second signal channel of the cylinder body, the second circular arc cavity is communicated with the first circular arc cavity, the first signal channel of the cylinder body is communicated with the first signal channel of the distribution component, the second signal channel of the cylinder body is communicated with the second signal channel of the distribution component, the second circular arc cavity, the first signal channel of the cylinder body and the second signal channel of the cylinder body are all connected to different height positions inside the cylinder body, during the upward movement of the piston, the first signal channel of the cylinder body can be blocked and the second signal channel of the cylinder body can be opened, and during the downward movement of the piston, the first signal channel of the cylinder body can be opened and the second signal channel of the cylinder body can be blocked; when the first signal channel of the cylinder body is opened, it is communicated with the rear cavity of the piston; when the second signal channel of the cylinder body is opened, it is communicated with the front cavity of the piston; the second circular arc cavity remains connected with the rear cavity of the piston; The lower joint cooperates with the bottom of the piston; Also included is an emptying structure, the emptying structure is used to empty the internal fluid during the cycle; The oscillator is provided with an oscillator exhaust channel, which is connected to the first wall-attached channel and the second wall-attached channel of the fluid, the distribution component is provided with a distribution component exhaust channel, which is connected to the distribution component exhaust channel, and the piston is provided with a piston center exhaust channel, which is connected to the distribution component exhaust channel; when the piston moves upward, the fluid behind the piston passes through the first signal channel of the cylinder body, the first signal channel of the distribution seat, the first signal channel of the oscillator, the oscillator exhaust channel, the distribution component exhaust channel and the piston center exhaust channel and finally flows to the bottom of the hole; when the piston moves downward, the fluid in the front chamber of the piston passes through the second signal channel of the cylinder body, the second signal channel of the distribution seat, the second signal of the oscillator, the oscillator exhaust channel, the distribution component exhaust channel and the piston center exhaust channel and finally flows to the bottom of the hole.

2. The oscillating jet hydraulic impactor according to claim 1, characterized in that: The oscillator includes an oscillator substrate and an oscillator cover plate, the oscillator substrate and the oscillator cover plate are connected by bolts, a first fluid wall surface and a second fluid wall surface are distributed below the first signal channel of the oscillator and the second signal channel of the oscillator, a guide block is arranged between the first fluid wall surface and the second fluid wall surface, the first fluid wall channel is formed between the first fluid wall surface and the guide block, and the second fluid wall channel is formed between the second fluid wall surface and the guide block.

3. The oscillating jet hydraulic impactor according to claim 1, characterized in that: The first arc cavity is arranged in the flow distribution seat; the piston is matched with the flow distribution pipe.

4. The oscillating jet hydraulic impactor according to claim 1, characterized in that: A fan-shaped cross-section channel is also provided between the cylinder body and the outer tube, and the fan-shaped cross-section channel is communicated with the second input channel of the distribution seat and the piston front chamber.

5. The oscillating jet hydraulic impactor according to claim 1, characterized in that: A plurality of guide blocks are arranged in the lower joint, and the guide blocks cooperate with the piston.

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