Electric control hole expansion device

Abstract

The utility model relates to an electric-controlled reaming device, wherein a knife edge is arranged on a shell, and an inclined groove is arranged on a side wall of the knife edge; a tool is arranged in the knife edge and can be extended and retracted relative to the knife edge along the inclined groove; an end of a shaft sleeve corresponding to the tool is arranged in the shell and can be displaced along the axial direction of the shell, and the distance between the shaft sleeve and the tool is the displacement component of the tool extending and retracting relative to the knife edge along the inclined groove in the axial direction of the shell; the movable end of the first driving member is connected to the shaft sleeve to adjust the distance between the shaft sleeve and the tool; a piston is arranged in the shell and connected to the other end opposite to the tool, and the piston can The axial displacement along the outer shell is used to link the tool to expand and contract relative to the knife edge along the inclined groove; its pipe seat is fixedly arranged in the outer shell, and is provided with a pressure delivery channel connected to the piston; its center tube is provided with a pressure injection hole corresponding to the pressure delivery channel, and the center tube is arranged in the outer shell and can expand and contract relative to the pipe seat along the axial displacement of the outer shell; the movable end of its second driving member is connected to the center tube to drive the center tube to expand and contract relative to the pipe seat along the axial displacement of the outer shell, so that the pressure injection hole is connected or disconnected with the pressure delivery channel, thereby realizing the adjustment of the reaming diameter length and multiple reaming of the hole underground.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, and specifically discloses an electric-controlled eye-reaming device. Background Art

[0002] As the development of oil and gas fields increases, the corresponding development difficulty gradually increases. Due to the complex formation, complex situations such as wellbore shrinkage and well leakage occur frequently. In order to ensure underground safety, it is usually necessary to expand the wellbore with an eye expander.

[0003] At present, the openers are activated by dropping balls to expand the hole. However, the dropped balls will block the cooling channel of the drill bit at the lower end of the opener. In order to avoid blocking the cooling channel of the drill bit, it is necessary to first lower the drill bit, and then lower the opener to expand the hole after the drilling operation is completed. Moreover, this activation method can only expand the hole once. When a second expansion operation is required, the opener must first be salvaged from the well and the ball removed before it can be lowered back into the well to expand the hole.

[0004] Furthermore, the reamer can adjust the reaming size by adjusting and fixing the position of the limit sleeve before entering the well, but the reaming size cannot be adjusted in the well after entering the well. When it is necessary to adopt other reaming sizes for reaming, the reamer must be salvaged from the well to adjust the reaming size and then lowered into the well for operation.

[0005] As a result, the existing eye expanders are not only unable to fully cope with the complex and changeable conditions underground, but also have extremely low operating efficiency, which seriously affects the duration of the effect and even leads to an extension of the project cycle, resulting in huge losses. Utility Model Content

[0006] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides an electrically controlled reaming device, which adjusts the extension range of the tool by adjusting the displacement component of the tool along the inclined groove relative to the blade in the axial direction of the shell, thereby realizing adjustment of the reaming diameter length underground, and adopts a method of making the center pipe displace along the axial direction of the shell and expand and contract relative to the pipe seat to connect and disconnect the injection hole and the pressure transmission channel, so that the reaming operation can be repeated, avoiding the disadvantage that the reaming method activated by ball throwing can only be used for single reaming, can cope with complex and changeable conditions underground, facilitates the operator to perform various operations on the well, greatly improves the efficiency of the operation, and ensures the normal progress and timely completion of the project.

[0007] The technical solution adopted by the utility model to solve the problem is:

[0008] The electric-controlled eye-expanding device comprises:

[0009] The outer shell is provided with a knife edge, and a side wall of the knife edge is provided with an inclined groove;

[0010] A cutting tool, which is arranged in the cutting edge and can be extended and retracted relative to the cutting edge along the inclined groove;

[0011] A shaft sleeve, the end of the shaft sleeve corresponding to the tool is arranged in the housing and can be displaced along the axial direction of the housing, and the distance between the shaft sleeve and the tool is the displacement component of the tool along the inclined groove relative to the blade in the axial direction of the housing;

[0012] A first driving member, wherein a movable end of the first driving member is connected to the shaft sleeve to adjust the distance between the shaft sleeve and the tool;

[0013] A piston is disposed in the housing and connected to the other end of the tool. The piston can be displaced along the axial direction of the housing to link the tool to extend and retract relative to the blade along the inclined groove;

[0014] A pipe seat, which is fixedly arranged in the shell and is provided with a pressure transmission channel connected to the piston;

[0015] A central tube, wherein a pressure injection hole is arranged on the central tube corresponding to the pressure delivery channel, and the central tube is arranged in the outer shell and can be displaced along the axial direction of the outer shell and can be extended and retracted relative to the tube seat;

[0016] The second driving member, the movable end of which is connected to the central tube, drives the central tube to move along the axial direction of the shell and expand and contract relative to the tube seat, so that the injection hole is connected or disconnected with the pressure delivery channel.

[0017] In some embodiments of the utility model, a spray hole communicating with the space between the piston and the tube seat is further provided on the shell, the spray hole is arranged toward the position where the tool is extended relative to the shell, and a nozzle is arranged in the spray hole.

[0018] In some embodiments of the utility model, an annular groove connected to the pressure delivery channel is provided on the inner wall of the tube seat corresponding to the pressure injection hole, and the center tube is displaced axially along the outer shell to connect or disconnect the pressure injection hole with the annular groove, so that the pressure injection hole is connected or disconnected with the pressure delivery channel.

[0019] In some more specific embodiments, a displacement sensor is provided on the inner wall of the tube seat, the output end of the displacement sensor is connected to the input end of the second driving member, and the distance between the sensing end of the displacement sensor and the annular groove is the distance between the injection hole and one end of the center tube close to the tube seat.

[0020] In some embodiments of the present invention, a first elastic member is further provided between the sleeve and the cutter to push the cutter to reset and shrink relative to the cutting edge.

[0021] In some more specific embodiments, it also includes:

[0022] The connecting ring is arranged in the shell and can be displaced along the axial direction of the shell. The opposite end of the tool is connected to the connecting ring. The first elastic member is arranged between the shaft sleeve and the connecting ring and thus between the shaft sleeve and the tool.

[0023] In some embodiments of the present invention, it also includes:

[0024] The connecting seat is arranged in the shell and can be displaced axially along the shell. The other end of the tool is connected to the connecting seat and can be displaced radially along the shell. The piston is connected to the connecting seat and thus connected to the tool.

[0025] In some embodiments of the present invention, a second elastic member is provided between the movable end of the second driving member and the central tube to push the central tube to reset.

[0026] In some more specific embodiments, it also includes:

[0027] The shaft core is connected to the center tube, and the movable end of the second driving member is connected to the center tube by being connected to the shaft core, so as to drive the shaft core to move axially along the outer shell and link the center tube to move axially along the outer shell to extend and retract relative to the tube seat; an annular platform is formed on the peripheral side of the shaft core, and an installation space is reserved between the annular platform and the inner wall of the outer shell, and the second elastic member is arranged in the installation space, so as to be arranged between the movable end of the second driving member and the center tube.

[0028] In some embodiments of the present invention, it also includes:

[0029] The connector is connected to the outer shell and communicated with the central tube. The connector is used to connect the pressure transmission equipment.

[0030] In summary, compared with the prior art, the electric-controlled eye-reaming device provided by the utility model has the following technical effects:

[0031] By setting a shaft sleeve, the end of the shaft sleeve corresponding to the tool is set in the housing and can be displaced along the axial direction of the housing, and the distance between the shaft sleeve and the tool is the displacement component of the tool along the inclined groove relative to the blade in the axial direction of the housing, and then the movable end of the first driving member is connected to the shaft sleeve to adjust the distance between the shaft sleeve and the tool, and then the piston is set in the housing and connected to the other end of the tool, the piston can be displaced along the axial direction of the housing to link the tool to expand and contract along the inclined groove relative to the blade, and the pipe seat is fixedly set in the housing and provided with a pressure delivery channel connected to the piston, and the central pipe is provided with a corresponding pressure delivery channel The injection hole and the center tube are arranged in the shell and can be extended and retracted relative to the tube seat along the axial displacement of the shell. Finally, the movable end of the second driving member is connected to the center tube to drive the center tube to be extended and retracted relative to the tube seat along the axial displacement of the shell, so that the injection hole and the pressure transmission channel are connected or disconnected, so that the electric-controlled reaming device can adjust the reaming diameter length underground and realize multiple reaming in the well without fishing, so as to facilitate the operator to adjust the reaming diameter length and repeat reaming on the well, which greatly improves the efficiency of the operation and ensures the normal advancement and timely completion of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional diagram of an embodiment of an electric-controlled eye-enlarging device of the utility model;

[0033] Figure 2 This is a cross-sectional view of an embodiment of an electric-controlled eye-reaming device of the utility model;

[0034] Figure 3 for Figure 2 Magnified view of area A.

[0035] The meanings of the reference numerals are as follows:

[0036] 1. Shell; 10. Output port; 11. Blade; 12. Inclined groove; 13. Spray hole; 14. Nozzle; 2. Cutting tool; 21. Cutting head; 22. Connecting seat; 23. Connecting ring; 3. Center tube; 30. Overpressure channel; 31. Pressure injection hole; 4. Tube seat; 40. Pressure cut-off port; 41. Annular groove; 42. Pressure delivery channel; 43. Displacement sensor; 5. Piston; 50. Pressure groove; 6. Bushing; 60. Accommodating chamber; 61. First elastic member; 62. First driving member; 7. Shaft core; 70. Pressure delivery channel; 71. Second elastic member; 72. Annular platform; 73. Second driving member; 8. Waterproof cover; 80. Pressure inlet channel; 81. Flow sensor; 82. Circuit board; 83. Battery; 9. Connector; 90. Input port; 91. Connector. DETAILED DESCRIPTION

[0037] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0039] It should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for describing specific embodiments and are not intended to limit the present invention.

[0041] Please combine the specific Figures 1 to 3 As shown, the utility model discloses an embodiment of an electric-controlled reaming device, comprising: a housing 1, a tool 2, a sleeve 6, a first driving member 62, a piston 5, a pipe seat 4, a center pipe 3, and a second driving member 73.

[0042] Specifically, a blade 11 is provided on the housing 1, and an inclined groove 12 is provided on the side wall of the blade 11; the tool 2 is provided in the blade 11 and can be extended and retracted relative to the blade 11 along the inclined groove 12; the sleeve 6 is provided in the housing 1 at the opposite end of the tool 2 and can be displaced along the axial direction of the housing 1, and the distance between the sleeve 6 and the tool 2 is the displacement component of the tool 2 extending and retracting along the inclined groove 12 relative to the blade 11 in the axial direction of the housing 1; the movable end of the first driving member 62 is connected to the sleeve 6 to adjust the distance between the sleeve 6 and the tool 2, thereby adjusting the extension range of the tool 2 along the inclined groove 12 relative to the blade 11; the piston 5 is provided in the housing 1 and connected to the other opposite end of the tool 2, and the piston 5 can be displaced along the axial direction of the housing 1 to link the tool 2 along the inclined groove 1 2 is telescopic relative to the knife edge 11; the tube seat 4 is fixedly arranged in the shell 1 and is provided with a pressure delivery channel 42 connected to the piston 5; the central tube 3 is provided with a pressure injection hole 31 corresponding to the pressure delivery channel 42, and the central tube 3 is arranged in the shell 1 and can be displaced along the axial direction of the shell 1 and telescopic relative to the tube seat 4; the movable end of the second driving member 73 is connected to the central tube 3 to drive the central tube 3 to displace along the axial direction of the shell 1 and telescopic relative to the tube seat 4, so that the pressure injection hole 31 is connected or disconnected with the pressure delivery channel 42; wherein the first driving member 62 can be set as a motor or a hydraulic cylinder, and the second driving member 73 can also be set as a motor or a hydraulic cylinder. In this embodiment, the first driving member 62 is preferably set as a motor, and the second driving member 73 is also preferably set as a motor.

[0043] Through the above-mentioned settings, the electric-controlled reaming device can adjust the reaming diameter length underground and realize multiple reaming operations underground without the need for salvaging the well, thereby facilitating the operator to adjust the reaming diameter length and repeat reaming operations on the well, greatly improving the efficiency of the operation and ensuring the normal progress and timely completion of the project.

[0044] In practice, the piston 5 is provided with a pressure groove 50 toward the pipe seat 4 to accommodate the hydraulic pressure flowing into the pressure delivery channel 42, thereby being pressurized to push the tool 2; specifically, a plurality of cutter heads 21 are provided on the outer peripheral side of the tool 2 to provide sufficient cutting force when the electric-controlled reaming device performs rotary reaming, and to facilitate the individual replacement of the cutter head 21 after the blade is worn, without the need to replace the entire tool 2; more specifically, a plurality of cutters 2 are provided to ensure normal cutting during reaming, and further, the cutters 2 can be evenly distributed along the circumference of the housing 1, so that the electric-controlled reaming device is evenly stressed in the circumferential direction during reaming, thereby avoiding damage and malfunctions caused by uneven stress.

[0045] Preferably, a first elastic member 61 is further provided between the sleeve 6 and the tool 2 to push the tool 2 to reset and shrink relative to the blade 11. When the piston 5 is pressurized, the piston 5 moves toward the sleeve 6 along the axial direction of the housing 1 to link the tool 2 to extend relative to the blade 11 along the inclined groove 12, and the opposite end of the tool 2 approaches the sleeve 6, thereby compressing the space between the tool 2 and the sleeve 6, so that the first elastic member 61 is compressed. When the pressure applied to the piston 5 decreases or disappears, the first elastic member 61 recovers by its own elastic force, thereby pushing the opposite end of the tool 2 away from the sleeve 6, thereby shrinking the tool 2 relative to the blade 11 along the inclined groove 12 and restoring. position, and the piston 5 is reset in linkage; more preferably, the electric-controlled reaming device also includes a connecting ring 23, the connecting ring 23 is arranged in the outer shell 1 and can be displaced axially along the outer shell 1, the opposite end of the tool 2 is connected to the connecting ring 23, and the first elastic member 61 is arranged between the sleeve 6 and the connecting ring 23 and thus arranged between the sleeve 6 and the tool 2; optionally, the electric-controlled reaming device also includes a connecting seat 22, the connecting seat 22 is arranged in the outer shell 1 and can be displaced axially along the outer shell 1, the other end of the tool 2 is connected to the connecting seat 22 and can be displaced radially along the outer shell 1, and the piston 5 is connected to the tool 2 by being connected to the connecting seat 22.

[0046] Furthermore, the shell 1 is also provided with a spray hole 13 connecting the space between the piston 5 and the tube seat 4. The spray hole 13 is arranged toward the position where the tool 2 is extended relative to the shell 1. A nozzle 14 is arranged in the spray hole 13, so that the tool 2 can be cooled by spraying liquid to avoid damage and malfunction caused by overheating of the cutter head 21; accordingly, a plurality of spray holes 13 are also arranged corresponding to each tool 2, so as to spray and cool each tool 2.

[0047] Furthermore, an annular groove 41 connected to the pressure delivery channel 42 is provided on the inner wall of the tube seat 4 corresponding to the injection hole 31, and the central tube 3 is axially displaced along the outer shell 1 to connect or disconnect the injection hole 31 with the annular groove 41, so that the injection hole 31 is connected or disconnected with the pressure delivery channel 42; in practice, a displacement sensor 43 is provided on the inner wall of the tube seat 4, and the output end of the displacement sensor 43 is connected to the input end of the second driving member 73, and the distance between the sensing end of the displacement sensor 43 and the annular groove 41 is the distance between the injection hole 31 and the end of the central tube 3 close to the tube seat 4. When the movable end of the second driving member 73 drives the central tube 3 to axially displace along the outer shell 1 to connect the injection hole 31 with the annular groove 41, the end of the central tube 3 close to the tube seat 4 overlaps or covers the sensing end of the displacement sensor 43, and the displacement sensor 43 is triggered to send a signal to the second driving member 73, so that the movable end of the second driving member 73 stops operating, thereby fixing the current position of the central tube 3 for subsequent injection.

[0048] In practice, a second elastic member 71 is provided between the movable end of the second driving member 73 and the central tube 3 to push the central tube 3 to reset; in practical applications, the electric-controlled reaming device further comprises a shaft core 7, which is connected to the central tube 3, and the movable end of the second driving member 73 is connected to the central tube 3 by being connected to the shaft core 7, so as to drive the shaft core 7 to move axially along the outer shell 1 and link the central tube 3 to move axially along the outer shell 1 and to telescope relative to the tube seat 4; an annular platform 72 is formed on the peripheral side of the shaft core 7, and an installation space is reserved between the annular platform 72 and the inner wall of the outer shell 1, and the second elastic member 71 is provided in the installation space to be provided at the movable end of the second driving member 73 Between the center tube 3, when the movable end of the second driving member 73 drives the center tube 3 to move along the axial direction of the outer shell 1 toward the sensing end of the displacement sensor 43 so that the injection hole 31 is connected with the annular groove 41, the shaft core 7 is driven to move along the axial direction of the outer shell 1 toward the tool 2, thereby compressing the installation space, so that the second elastic member 71 is compressed, and when the movable end of the second driving member 73 is recovered, the second elastic member 71 uses its own elastic force to restore, thereby pushing the shaft core 7 to move along the axial direction of the outer shell 1 away from the tool 2, and then driving the center tube 3 to move along the axial direction of the outer shell 1 away from the sensing end of the displacement sensor 43 to disconnect the injection hole 31 from the annular groove 41.

[0049] More specifically, the electric-controlled reaming device also includes a connector 9, which is connected to the housing 1 and communicated with the central tube 3, and the connector 9 is used to connect a pressure transmission device; in addition, the connector 9 can be connected to the housing 1 through a connector 91; in order to achieve control of the first drive member 62 and the second drive member 73, the electric-controlled reaming device also includes a circuit board 82 and a battery 83, the circuit board 82 is used to receive control signals and output them from its output end, the output end of the circuit board 82 is connected to the input end of the first drive member 62 and the input end of the second drive member 73, and the battery 83 is used to provide power to the circuit board 82.

[0050] Specifically, a waterproof sleeve 8 is provided in the connector 9, and a pressure inlet channel 80 connected to the input port 90 is provided in the waterproof sleeve 8. A circuit space is left between the outer side of the waterproof sleeve 8 and the inner side of the connector 9. A circuit board 82 and a battery 83 are provided in the circuit space, thereby utilizing the waterproof function of the waterproof sleeve 8 to prevent damage or malfunction due to water ingress; more specifically, a flow sensor 81 is also provided in the waterproof sleeve 8, and the output end of the flow sensor 81 can be connected to an external display device or a pressure transmission device. The sensing end of the flow sensor 81 is provided on the inner wall of the waterproof sleeve 8 corresponding to the pressure inlet channel 80, so as to sense the liquid flow input into the electric-controlled eye-expanding device, thereby transmitting information to the operator, so that the operator can adjust the input liquid flow in time, or control the input amount of the pressure transmission device.

[0051] In practice, an output port 10 is provided at one end of the housing 1 away from the joint 9 to output hydraulic pressure. Correspondingly, an input port 90 is provided at one end of the joint 9 away from the housing 1 to input hydraulic pressure. The shaft core 7 is provided with a pressure supply channel 70 connected to the pressure inlet channel 80. The center tube 3 is provided with an overpressure channel 30 connected to the pressure supply channel 70. The pipe seat 4 is provided with a pressure cut-off port 40 corresponding to the output port 10. The pressure cut-off port 40 is respectively connected to the overpressure channel 30 and the output port 10, and the pressure cut-off port 40 plays a corresponding flow cut-off role to increase the hydraulic pressure flowing from the overpressure channel 30 to the injection hole 31.

[0052] The working principle and workflow of the above-mentioned electric-controlled eye-widening device are exemplarily described below:

[0053] Eye expansion phase:

[0054] A first control signal is sent to the circuit board 82 via a wireless device, and the circuit board 82 transmits the first control signal to the first driving member 62 to control the movable end of the first driving member 62 to move in conjunction with the sleeve 6 along the axial direction of the housing 1, thereby adjusting the distance between the sleeve 6 and the tool 2 to the target length, and then fixing the movable end of the first driving member 62 at its current position so that the sleeve 6 is fixed at its current position at the same time, and then sending a second control signal to the circuit board 82 via the wireless device, and the circuit board 82 transmits the second control signal to the second driving member 73 to control the movable end of the second driving member 73 to move in conjunction with the central tube 3 along the axial direction of the housing 1, so that the injection hole 31 is connected with the annular groove 41, so as to connect with the pressure delivery channel 42, and make the end of the central tube 3 close to the tube seat 4 overlap or cover the sensing end of the displacement sensor 43, thereby triggering the displacement sensor 43 to transmit a feedback signal to the second driving member 73, so as to control the movable end of the second driving member 73 to stop operating, so that the movable end of the second driving member 73 is fixed at its current position so that the central tube 3 is fixed at the same time. The hydraulic pressure is fixed at its current position, and finally inputted through the input port 90, and the hydraulic pressure flows to the pressure receiving groove 50 after passing through the pressure inlet channel 80, the pressure delivery channel 70, the overpressure channel 30, the pressure injection hole 31, the annular groove 41, and the pressure delivery channel 42 in sequence, so as to push the piston 5 and link the tool 2 to extend along the inclined groove 12 relative to the blade 11, and the hole expansion operation can be performed by rotating the electric control hole expansion device; during the operation, the hydraulic pressure in the space between the piston 5 and the pipe seat 4 can flow to the tool 2 through the nozzle 14 in the spray hole 13, so as to press the tool head 21 on the tool 2 To cool down, if it is necessary to adjust the extension range of the tool 2 along the inclined groove 12 relative to the blade 11 again, the first control signal is sent to the circuit board 82 through the wireless device again, and the circuit board 82 transmits the first control signal to the first driving member 62 to control the movable end of the first driving member 62 to move along the axial linkage sleeve 6 of the housing 1, so as to adjust the distance between the sleeve 6 and the tool 2 to a new target length, and then fix the movable end of the first driving member 62 at its new current position so that the sleeve 6 is fixed at its new current position at the same time.

[0055] Recycling tools 2 stages:

[0056] Stop inputting hydraulic pressure from the input port 90, and send the third control signal to the circuit board 82 through the wireless device, the circuit board 82 transmits the third control signal to the first drive member 62 to control the movable end of the first drive member 62 to be retracted along the axial direction of the housing 1, the tool 2 shrinks along the inclined groove 12 relative to the blade 11 and resets under the action of the first elastic member 61, and the piston 5 is reset in conjunction with it, and the fourth control signal is sent to the circuit board 82 through the wireless device, the circuit board 82 transmits the fourth control signal to the second drive member 73 to control the movable end of the second drive member 73 to be retracted along the axial direction of the housing 1, the shaft core 7 is displaced along the axial direction of the housing 1 and away from the tool 2 under the action of the second elastic member 71, and the center tube 3 is displaced along the axial direction of the housing 1 and away from the sensing end of the displacement sensor 43, thereby disconnecting the injection hole 31 from the annular groove 41.

[0057] The movable end of the first driving member 62 is linked to the sleeve 6 for displacement toward the opposite end of the tool 2 by clockwise rotation, and is recovered and reset by counterclockwise rotation; the movable end of the second driving member 73 is linked to the sleeve 6 for displacement toward the opposite end of the tool 2 by clockwise rotation, and is recovered and reset by counterclockwise rotation; if multiple reaming operations are required, the previous stages are repeated in sequence.

[0058] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. Although optional embodiments of the utility model embodiments have been described, once those skilled in the art know the basic creative concept, they can make additional changes and modifications to these embodiments. Therefore, the attached claims are intended to be interpreted as including optional embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0059] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0060] The technical solution provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. At the same time, for those skilled in the art, according to the principle and implementation method of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An electrically controlled eye-opening device, characterized in that: include: A shell (1), wherein a knife edge (11) is provided on the shell (1), and a chute (12) is provided on a side wall of the knife edge (11); A cutting tool (2), the cutting tool (2) being arranged in the cutting edge (11) and being capable of extending and retracting relative to the cutting edge (11) along the inclined groove (12); a shaft sleeve (6), wherein the shaft sleeve (6) is arranged in the housing (1) at an end opposite to the tool (2) and is displaceable along the axial direction of the housing (1); the distance between the shaft sleeve (6) and the tool (2) is a displacement component of the tool (2) extending and retracting along the inclined groove (12) relative to the cutting edge (11) in the axial direction of the housing (1); A first driving member (62), wherein a movable end of the first driving member (62) is connected to the shaft sleeve (6) so as to adjust the distance between the shaft sleeve (6) and the tool (2); A piston (5), the piston (5) being arranged in the housing (1) and connected to the other end of the tool (2), the piston (5) being displaceable along the axial direction of the housing (1) to link the tool (2) to extend and retract along the inclined groove (12) relative to the knife edge (11); A pipe seat (4), the pipe seat (4) being fixedly arranged in the housing (1) and provided with a pressure transmission channel (42) connected to the piston (5); A central tube (3), the central tube (3) being provided with a pressure injection hole (31) corresponding to the pressure delivery channel (42), the central tube (3) being arranged in the outer shell (1) and being able to move along the axial direction of the outer shell (1) and to be telescopic relative to the tube seat (4); A second driving member (73), wherein the movable end of the second driving member (73) is connected to the central tube (3) so as to drive the central tube (3) to move axially along the outer shell (1) and to expand and contract relative to the tube seat (4), thereby connecting or disconnecting the injection hole (31) and the pressure delivery channel (42).

2. The electric-controlled eye-reaming device according to claim 1, characterized in that: The outer shell (1) is also provided with a spray hole (13) communicating with the space between the piston (5) and the tube seat (4); the spray hole (13) is arranged toward the position where the tool (2) is located when it is extended relative to the outer shell (1); and a nozzle (14) is arranged in the spray hole (13).

3. The electric-controlled eye-reaming device according to claim 1 or 2, characterized in that: The inner wall of the tube seat (4) is provided with an annular groove (41) corresponding to the injection hole (31) and connected to the pressure delivery channel (42); the central tube (3) is displaced axially along the outer shell (1) to connect or disconnect the injection hole (31) and the annular groove (41), so that the injection hole (31) and the pressure delivery channel (42) are connected or disconnected.

4. The electric-controlled eye-widening device according to claim 3, characterized in that: A displacement sensor (43) is provided on the inner wall of the tube seat (4), the output end of the displacement sensor (43) is connected to the input end of the second driving member (73), and the distance between the sensing end of the displacement sensor (43) and the annular groove (41) is the distance between the injection hole (31) and one end of the center tube (3) close to the tube seat (4).

5. The electric-controlled eye-reaming device according to claim 1 or 2, characterized in that: A first elastic member (61) is also provided between the shaft sleeve (6) and the cutter (2) to push the cutter (2) to return to its original position and to shrink relative to the cutting edge (11).

6. The electric-controlled eye-reaming device according to claim 5, characterized in that: Also includes: A connecting ring (23) is arranged in the housing (1) and can be displaced along the axial direction of the housing (1); an opposite end of the tool (2) is connected to the connecting ring (23); and the first elastic member (61) is arranged between the shaft sleeve (6) and the connecting ring (23) and thus between the shaft sleeve (6) and the tool (2).

7. The electric-controlled eye-widening device according to claim 1 or 2, characterized in that: Also includes: A connecting seat (22) is arranged in the housing (1) and can be displaced in the axial direction of the housing (1); the other end of the tool (2) is connected to the connecting seat (22) and can be displaced in the radial direction of the housing (1); the piston (5) is connected to the tool (2) by being connected to the connecting seat (22).

8. The electric-controlled eye-widening device according to claim 1 or 2, characterized in that: A second elastic member (71) is provided between the movable end of the second driving member (73) and the central tube (3) to push the central tube (3) to reset.

9. The electric-controlled eye-reaming device according to claim 8, characterized in that: Also includes: An axial core (7), the axial core (7) being connected to the central tube (3), the movable end of the second driving member (73) being connected to the axial core (7) being connected to the central tube (3), so as to drive the axial core (7) to move axially along the outer shell (1) and thereby link the central tube (3) to move axially along the outer shell (1) and to extend and retract relative to the tube seat (4); an annular platform (72) is formed on the circumference of the axial core (7), an installation space is reserved between the annular platform (72) and the inner wall of the outer shell (1), and the second elastic member (71) is arranged in the installation space so as to be arranged between the movable end of the second driving member (73) and the central tube (3).

10. The electric-controlled eye-reaming device according to claim 1 or 2, characterized in that: Also includes: A connector (9), the connector (9) is connected to the housing (1) and communicates with the central tube (3), and the connector (9) is used to connect a pressure transmission device.

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