A downhole vibration oil production device

Abstract

The present invention discloses a downhole vibration oil production device, comprising an oil pipe and a sucker rod, wherein the lower part of the oil pipe is connected to the outer sleeve of a vibration oil production power converter through an external connecting piece, the lower end of the outer sleeve is connected to a connecting rod sealing assembly, the lower end of the sucker rod is connected to the vibration cylinder sleeve of the vibration oil production power converter through an internal connecting piece and an expansion joint, and the lower end of the vibration oil production power converter is connected to a bottom hole accessory. The present invention can convert the power generated by a ground pumping unit, a linear motor in a wellbore or a water-powered piston in a warp barrel into the power required for downhole artificial vibration oil production, and the vibration intensity and vibration frequency can be adjusted, thereby realizing a complete process of artificial downhole vibration oil production with power conversion between the ground and the downhole, achieving the purpose of one-point vibration and multiple wells being effective, and can produce a relatively strong vibration effect on the oil layer during operation, thereby effectively improving the effect of oil field development.

Description

Technical Field

[0001] The invention relates to the technical field of a vibration oil production device for improving the oil field development effect by using vibration waves during the oil development process, in particular to a downhole vibration oil production device. Background Art

[0002] At present, in the process of oil development, the positive impact of vibration effect on oil field development has been confirmed by many oil fields at home and abroad. Artificial vibration oil production technology can effectively improve the flow characteristics of formation fluids and increase crude oil recovery rates. On-site applications have seen obvious results. However, ground vibration sources, as the main equipment for vibration oil production, have certain limitations and technical deficiencies. First, the vibration generated by equipment operation has certain damage to ground equipment and facilities and nearby personnel. Second, most of the vibration energy is absorbed and consumed by the soft soil layer on the surface, and the vibration wave energy transmitted to the oil layer is relatively weak, so the effect is limited. In view of this, in-depth research was conducted on the above-mentioned issues, and this case was created. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems. A downhole vibration oil production device is designed to solve the problems in the prior art that the vibration generated by the operation of the ground vibration equipment causes certain damage to the ground equipment and facilities and nearby personnel, and the vibration wave energy transmitted to the oil layer is relatively weak and the effect is limited.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a downhole vibration oil production device, including an oil pipe and a sucker rod, the lower part of the oil pipe is connected to the outer sleeve of the vibration oil production power converter through an external connecting piece, the lower end of the outer sleeve is connected to a connecting rod sealing assembly, the lower end of the sucker rod is connected to the vibration cylinder sleeve of the vibration oil production power converter through an internal connecting piece and an expander, the lower end of the vibration oil production power converter is connected to the bottom hole accessory, a push cylinder sleeve is embedded in the outer sleeve, a pressure relief groove is provided on the inner wall of the push cylinder sleeve, a push piston assembly is installed at the lower end of the vibration cylinder sleeve, and a vibration piston is slidably arranged in the vibration cylinder sleeve, the lower end of the vibration piston is connected to the hammer head through a connecting rod, and the connecting rod and the connecting rod are slidably sealed with the connecting rod sealing assembly.

[0005] The above-mentioned pushing piston assembly includes a piston assembly connecting sleeve which is assembled on the lower end of the vibrating cylinder sleeve and connected to the sealing valve ball sleeve. The sealing valve ball sleeve is sleeved with a sealing valve ball. A retaining ring is provided at the lower end of the sealing valve ball sleeve and a liquid inlet channel is opened on the side wall of the retaining ring. A pushing piston matching the retaining ring is sleeved on the outer side of the sealing valve ball sleeve.

[0006] The inner through hole of the push piston is a stepped hole and is arranged from top to bottom in sequence as a small diameter section and a necked section. The diameter of the small diameter section is smaller than the diameter of the necked section. The end face of the small diameter section is chamfered at a certain angle and the chamfered surface is smooth to form a valve seat.

[0007] The outer side surface of the retaining ring is provided with a plurality of through grooves along the axial direction as liquid inlet channels, and the outer diameter of the groove wall of the through groove is slightly smaller than the diameter of the reduced diameter section of the pushing piston.

[0008] The outer surface of the vibration piston is provided with a plurality of annular sand prevention grooves and the lower end of the vibration piston is a reduced diameter structure.

[0009] An inner shaft hole is provided at the lower end of the reduced diameter structure of the vibration piston, a semicircular groove is provided on the inner wall of the inner shaft hole, and a ball-casting hole with a vertical axis and the same diameter as the groove is drilled at a position opposite to the groove and connected to the inner shaft hole.

[0010] The upper end of the connecting rod is provided with a reducing step whose diameter is slightly smaller than the inner shaft hole at the lower end of the vibration piston. A semicircular ring groove is opened on the side wall of the reducing step and the diameter of the semicircular ring groove is the same as the diameter of the semicircular groove of the inner shaft hole of the vibration piston.

[0011] The necked step of the connecting rod is inserted into the inner shaft hole at the lower end of the vibrating piston so that the semicircular annular groove faces the semicircular groove to form a complete annular groove. A number of equal-diameter locking balls are loaded into the annular groove through the ball-throwing hole to fill the annular groove. A pressure ball is then loaded into the ball-throwing hole, and a locking sleeve is mounted on the outside of the reduced-diameter structure.

[0012] The bottom hole accessory comprises an anvil sleeve connected to the lower connecting sleeve of the vibration oil production power converter, wherein a force transmission rod is slidably arranged in the anvil sleeve and the upper end of the sliding distance is limited by the step of the through hole in the anvil sleeve and the lower end is limited by the pressure sleeve.

[0013] The outer diameter of the force transmission rod is set to a three-step shape, the top of the force transmission rod is set to a certain inner cone angle and matches the hammer head, the lower small diameter section of the force transmission rod is equipped with a dustproof seal and an expansion sleeve, and the lower end is connected to an anvil.

[0014] The downhole vibration oil production device made by utilizing the technical solution of the present invention can convert the power generated by the ground pumping unit, the linear motor in the wellbore or the water-powered piston in the warp barrel into the power required for downhole artificial vibration oil production, and the vibration intensity and vibration frequency can be adjusted, thereby realizing a complete process of artificial downhole vibration oil production with power conversion between the ground and the well, achieving the purpose of one-point vibration and multiple wells being effective. When working, it can produce a relatively strong vibration effect on the oil layer, thereby effectively improving the effect of oil field development, and transferring the ground vibration source to the wellbore, which not only overcomes the damage of vibration to surface equipment and personnel, but also avoids the waste of vibration energy. The process method adopted by the device is simple, easy to use, and conducive to promotion and application. It is suitable for various types of oil field development, especially suitable for development blocks with intensive well layout of heavy oil, various polluted oil layer blocks and water areas with slow effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the main cross-sectional structure of the vibration oil production power converter of the present invention.

[0017] Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure.

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure at position AA of the present invention.

[0019] Figure 5 It is a schematic diagram of the enlarged structure of position a of the present invention.

[0020] In the figure: 1-oil pipe; 2-sucker rod; 3-expansion device; 4-weighting rod; 5-disconnector; 6-vibration oil production power converter; 7-anvil sleeve; 8-anvil force transmission rod; 9-pressing sleeve; 10-dustproof seal; 11-expansion sleeve; 12-anvil; 13-connecting nail; 6-1-oil pipe coupling; 6-2-disconnector connector; 6-3-connecting short circuit; 6-4-vibration cylinder sleeve; 6-5-vibration piston; 6-5-1-sand control groove; 6-5-2-locking sleeve; 6-5-3-pressing ball; 6-5-4-locking ball; 6-5-5-fixing nail; 6- 6-push cylinder sleeve short circuit; 6-7-end sealing ring; 6-8-push cylinder sleeve; 6-8-1-pressure relief groove; 6-9-push piston assembly; 6-9-1-push piston assembly connecting sleeve; 6-9-2-sealing valve ball; 6-9-3-sealing valve ball pressure sleeve; 6-9-4-retaining ring; 6-9-5-retaining ring fixing nail; 6-9-6-liquid inlet channel; 6-9-7-push piston; 6-10-jacket; 6-11-connecting rod; 6-12-sealing ring; 6-13-connecting rod sealing assembly; 6-14-lower connecting short circuit; 6-15-hammer head. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-5 As shown, the components in this case are connected in sequence by those skilled in the art. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0022] Embodiment: By the specification attached Figure 1-5 It can be seen that this scheme includes an oil pipe 1 and a sucker rod 2. The lower part of the oil pipe 1 is connected to the outer sleeve 6-10 of the vibration oil production power converter 6 through an external connecting piece. The lower end of the outer sleeve 6-10 is connected to a connecting rod seal assembly 6-13. The lower end of the sucker rod 2 is connected to the vibration cylinder sleeve 6-4 of the vibration oil production power converter 6 through an internal connecting piece and a telescoping device 3. The lower end of the vibration oil production power converter 6 is connected to the bottom hole accessories. The outer sleeve 6-10 is embedded with a push cylinder sleeve 6-8. A pressure relief groove 6-8-1 is provided on the inner wall of the push cylinder sleeve 6-8. A push piston assembly 6-9 is installed at the lower end of the vibration cylinder sleeve 6-4, and a vibration piston 6-5 is slidably arranged in the vibration cylinder sleeve 6-4. The lower end of the vibration piston 6-5 is connected to the hammer head 6-15 through a connecting rod 6-11, and the connecting rod 6-11 is slidably sealed with the connecting rod seal assembly 6-13.

[0023] It should be noted that the above-mentioned internal connecting parts include but are not limited to the sucker rod 2 and the weight rod 4. The sucker rod 2 is inserted into the oil pipe 1, and the lower end of the sucker rod 2 is connected to the weight rod 4. The lower end of the weight rod 4 is connected to the vibration oil production power converter 6 through the disconnector 5;

[0024] The above-mentioned bottom hole accessories include but are not limited to anvil sleeve 7, anvil force transmission rod 8 and anvil 12, etc. The lower end of the vibration oil production power converter 6 is connected to the anvil force transmission rod 8 through the anvil sleeve 7, the outer side of the anvil force transmission rod 8 is sleeved with a dustproof seal 10, the upper part of the dustproof seal 10 is provided with a press sleeve 9, and the lower end of the anvil force transmission rod 8 is connected to the anvil 12 through a connecting nail 13;

[0025] The vibration oil production power converter 6 includes an oil pipe coupling 6-1, which is connected to the oil pipe 1. The lower end of the oil pipe coupling 6-1 is equipped with a connecting short circuit 6-3, a push cylinder sleeve short circuit 6-6, an outer sleeve 6-10, a connecting rod seal assembly 6-13 and a lower connecting short circuit 6-14 in sequence from top to bottom. The outer sleeve 6-10 is embedded with a push cylinder sleeve 6-8. A pressure relief groove 6-8-1 is provided on the inner wall of the push cylinder sleeve 6-8. The lower connecting short circuit 6-14 is connected to the anvil sleeve 7. The disconnector 5 The lower end is connected to the vibration cylinder sleeve 6-4 through a disconnector connector 6-2, and a push piston assembly 6-9 is installed at the lower end of the vibration cylinder sleeve 6-4. A vibration piston 6-5 is slidably arranged in the vibration cylinder sleeve 6-4. The lower end of the vibration piston 6-5 is connected to a connecting rod 6-11, and a hammer head 6-15 is connected to the lower end of the connecting rod 6-11. The connecting rod 6-11 and the connecting rod seal assembly 6-13 are slidably sealed by a sealing ring 6-12; the above-mentioned push piston assembly 6-9 includes a push piston assembly connecting sleeve 6- 9-1, the piston assembly connecting sleeve 6-9-1 is assembled on the lower end of the vibration cylinder sleeve 6-4 and connected with the sealing valve ball pressing sleeve 6-9-3. The sealing valve ball pressing sleeve 6-9-3 is sleeved with a sealing valve ball 6-9-2. The lower end of the sealing valve ball 6-9-2 is axially limited by the step on the sealing valve ball pressing sleeve 6-9-3, and the upper end is axially pressed by the piston assembly connecting sleeve 6-9-1 to form an end face seal. The lower end of the sealing valve ball pressing sleeve 6-9-3 is provided with a retaining ring 6-9-4, and the retaining ring 6-9-4 is provided through the retaining ring. The ring fixing nail 6-9-5 is assembled and connected with the sealing valve ball pressure sleeve 6-9-3, and a liquid inlet channel 6-9-6 is opened on the side wall of the retaining ring 6-9-4. A push piston 6-9-7 matching the retaining ring 6-9-4 is sleeved on the outer side of the sealing valve ball pressure sleeve 6-9-3. The push piston 6-9-7 is slidably sealed with the inner wall of the push cylinder sleeve 6-8. Both ends of the push cylinder sleeve 6-8 are fixed by the push cylinder sleeve short circuit 6-6 and the outer sleeve 6-10, and sealing sections are set at both ends to seal with the outer sleeve 6-10 through the end sealing ring 6-7;

[0026] When in use, the device is placed underground, and the ground or wellbore power drives the sucker rod 2, the weight rod 4, the disconnector 5, the disconnector connector 6-2, the vibrating cylinder sleeve 6-4, and the push piston assembly 6-9 to move upward. At this time, the vibrating piston 6-5 and the connecting rod 6-11 are at the bottom dead center under the gravity of the hammer head 6-15. At this time, the liquid inlet valve formed by the sealing valve ball 6-9-2 and the push piston 6-9-7 is in an open state, and the liquid can make the upper and lower pressures of the vibrating piston 6-5 the same through the liquid inlet channel 6-9-6, further driving the push piston 6-9-7 to leave the pressure relief groove 6-8-1 of the push cylinder sleeve 6-8 and enter the top dead center of the sealing section of the push cylinder sleeve 6-8;

[0027] When the ground or wellbore power is controlled to drive the disconnector connector 6-2, the vibrating cylinder sleeve 6-4, and the push piston assembly 6-9 downward, the liquid inlet valve formed by the sealing valve ball 6-9-2 and the push piston 6-9-7 is in a closed state, and the pressure at the lower end of the push piston 6-9-7 gradually increases. Under the action of the hydraulic pressure, the vibrating piston 6-5, the connecting rod 6-11, and the hammer head 6-15 overcome the gravity of the three connecting parts and move upward; further, when the push piston 6-9-7 all enters the pressure relief groove 6-8 of the push cylinder sleeve 6-8 -1 stage, the lower part of the vibration piston 6-5 suddenly releases pressure through the reflux channel 6-10-1 and the pressure relief groove 6-8-1, and the upper and lower pressures are the same. At this time, the vibration piston 6-5 and the connecting rod 6-11 move downward rapidly under the dual effects of the gravity of the hammer head 6-15 and the hydraulic driving force, realizing a movement equivalent to a free fall, so that the hammer head 6-15 and other bottom hole accessories such as the anvil force transmission rod 8 can achieve an impact vibration, realize the forced vibration of the oil layer, and generate a series of vibration effects to achieve production increase;

[0028] The vibration piston 6-5 and the connecting piece can be continuously driven to move downward and upward by the up and down movement of the disconnector connector 6-2 and the connecting piece. At the same time, the travel of the disconnector connector 6-2 and the connecting piece can be adjusted, thereby adjusting the falling height of the hammer 6-15 and the impact force thereof. At the same time, the impact frequency of the hammer 6-15 can be adjusted by adjusting the running speed of the disconnector connector 6-2 and the connecting piece.

[0029] The upward running height of the vibrating piston 6-5 and the connecting piece and the downward running distance of the push piston assembly 6-9 are inversely proportional to the ratio of their force-bearing areas.

[0030] In the specific implementation process, the outer surface of the pushing piston 6-9-7 is smooth and has a plurality of shallow annular grooves along the circumferential direction. The inner through hole of the pushing piston 6-9-7 is a stepped hole and is sequentially arranged as a small diameter section and a necking section from top to bottom. The diameter of the small diameter section is smaller than the diameter of the necking section. The end face of the small diameter section is chamfered at a certain angle and the chamfered surface is smooth to form a valve seat, which cooperates with the sealing valve ball 6-9-2 to form a seal. The outer side surface of the retaining ring 6-9-4 is axially provided with a plurality of through grooves as liquid inlet channels 6-9-6. The outer diameter of the groove wall of the through groove is slightly smaller than the diameter of the necking section of the pushing piston 6-9-7. The groove wall of the retaining ring 6-9-4 can drive the pushing piston 6-9-7 to move synchronously along the axial direction.

[0031] In the specific implementation process, a plurality of annular sand prevention grooves 6-5-1 are arranged on the outer surface of the above-mentioned vibration piston 6-5, and the lower end of the vibration piston 6-5 is a reduced diameter structure. An inner shaft hole is opened at the lower end of the reduced diameter structure of the above-mentioned vibration piston 6-5, and a semicircular groove is opened on the inner wall of the inner shaft hole. A pitching hole with a vertical axis and the same diameter as the groove is drilled at a position opposite to the groove and connected to the inner shaft hole. A reduced diameter step is arranged at the upper end of the connecting rod 6-11, and the diameter is slightly smaller than the inner shaft hole at the lower end of the vibration piston 6-5. A reduced diameter step is opened on the side wall of the reduced diameter step. The semicircular annular groove has a diameter that is the same as the diameter of the semicircular groove of the inner shaft hole of the vibration piston 6-5, wherein the necked step of the connecting rod 6-11 is inserted into the inner shaft hole at the lower end of the vibration piston 6-5 so that the semicircular annular groove and the semicircular groove are opposite to each other to form a complete annular groove, and a number of equal-diameter locking balls 6-5-4 are loaded into the annular groove through the ball-throwing hole to fill the annular groove, and a pressure ball 6-5-3 is installed in the ball-throwing hole, and a locking sleeve 6-5-2 is mounted on the outside of the reduced diameter structure and fixed to the locking sleeve 6-5-2 by a fixing nail 6-5-5.

[0032] In the specific implementation process, both ends of the anvil sleeve 7 are provided with internal threads and the upper end is connected to the lower connecting sleeve 6-14. A step is provided in the through hole of the anvil sleeve 7. The force transmission rod 8 is arranged in the anvil sleeve 7 and can slide axially in the anvil sleeve 7. The upper end of the sliding distance is limited by the step of the anvil sleeve 7 and the lower end is limited by the pressure sleeve 9. The pressure sleeve 9 is connected to the bottom of the anvil sleeve 7 by threads.

[0033] In the specific implementation process, the outer diameter of the above-mentioned force transmission rod 8 is set to a three-step step shape, the top of the force transmission rod 8 is set to a certain inner cone angle and matches the hammer head 6-15, the lower small diameter section of the force transmission rod 8 is equipped with a dustproof seal 10, an expansion sleeve 11 and an anvil 12, an inner diameter reducing hole is set on the anvil 12, a step is set on the inner side of the inner diameter reducing hole, the connecting pin 13 passes through the anvil 12 and is connected to the force transmission rod 8 by a thread, the side of the connecting pin 13 is set with a step and is limited to each other with the inner step of the anvil 12.

[0034] To sum up, the downhole vibration oil production power converter can convert the power generated by the ground pumping unit, the linear motor in the wellbore or the water-powered piston in the warp barrel into the power required for downhole artificial vibration oil production, and the vibration intensity and vibration frequency can be adjusted, realizing the complete process of artificial downhole vibration oil production with power conversion between the ground and the well, achieving the purpose of one-point vibration and multiple wells being effective. When working, it can produce a relatively strong vibration effect on the oil layer, thereby effectively improving the effect of oil field development, and transferring the ground vibration source to the well, which not only overcomes the damage of vibration to surface equipment and personnel, but also avoids the waste of vibration energy. The process method adopted by this device is simple, easy to use, and conducive to promotion and application. It is suitable for various types of oil field development, especially suitable for development blocks with intensive heavy oil well layout, various contaminated oil layer blocks and water areas with slow results.

[0035] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A downhole vibration oil production device, characterized in that: The invention comprises an oil pipe (1) and a sucker rod (2), wherein the lower part of the oil pipe (1) is connected to a jacket (6-10) of a vibration oil production power converter (6) through an external connecting piece, the lower end of the jacket (6-10) is connected to a connecting rod seal assembly (6-13), the lower end of the sucker rod (2) is connected to a vibration cylinder sleeve (6-4) of the vibration oil production power converter (6) through an internal connecting piece and a telescopic device (3), the lower end of the vibration oil production power converter (6) is connected to a bottom hole accessory, and the jacket (6-10) is connected to a connecting rod seal assembly (6-13). 10) is embedded with a push cylinder sleeve (6-8), the inner wall surface of the push cylinder sleeve (6-8) is provided with a pressure relief groove (6-8-1), the lower end of the vibration cylinder sleeve (6-4) is installed with a push piston assembly (6-9), and a vibration piston (6-5) is slidably arranged in the vibration cylinder sleeve (6-4), the lower end of the vibration piston (6-5) is connected to the hammer head (6-15) through a connecting rod (6-11), and the connecting rod (6-11) and the connecting rod seal assembly (6-13) are slidably sealed; The pushing piston assembly (6-9) comprises a piston assembly connecting sleeve (6-9-1) which is assembled on the lower end of the vibration cylinder sleeve (6-4) and connected to the sealing valve ball pressing sleeve (6-9-3); the sealing valve ball pressing sleeve (6-9-3) is sleeved with a sealing valve ball (6-9-2); the lower end of the sealing valve ball pressing sleeve (6-9-3) is provided with a retaining ring (6-9-4) and a liquid inlet channel (6-9-6) is opened on the side wall of the retaining ring (6-9-4); the outer side of the sealing valve ball pressing sleeve (6-9-3) is sleeved with a pushing piston (6-9-7) which matches the retaining ring (6-9-4); The outer surface of the vibration piston (6-5) is provided with a plurality of annular sand prevention grooves (6-5-1), and the lower end of the vibration piston (6-5) is a reduced diameter structure; An inner shaft hole is provided at the lower end of the reduced diameter structure of the vibration piston (6-5), a semicircular groove is provided on the inner wall of the inner shaft hole, and a ball-casting hole with a vertical axis and the same diameter as the groove is drilled at a position directly opposite to the groove and communicated with the inner shaft hole; The upper end of the connecting rod (6-11) is provided with a reduced diameter step whose diameter is slightly smaller than the inner shaft hole at the lower end of the vibration piston (6-5); a semicircular annular groove is provided on the side wall of the reduced diameter step, and the diameter of the semicircular annular groove is the same as the diameter of the semicircular groove of the inner shaft hole of the vibration piston (6-5); The necked step of the connecting rod (6-11) is inserted into the inner shaft hole at the lower end of the vibrating piston (6-5) so that the semicircular annular groove and the semicircular groove face each other to form a complete annular groove, a plurality of equal-diameter locking balls (6-5-4) are loaded into the annular groove through the ball-throwing hole to fill the annular groove, a pressure ball (6-5-3) is then loaded into the ball-throwing hole, and a locking sleeve (6-5-2) is mounted on the outside of the reduced-diameter structure.

2. A downhole vibration oil production device according to claim 1, characterized in that: The inner through hole of the push piston (6-9-7) is a stepped hole and is arranged in sequence from top to bottom as a small diameter section and a necked section, the diameter of the small diameter section is smaller than the diameter of the necked section, the end face of the small diameter section is chamfered at a certain angle and the chamfered surface is smooth to form a valve seat.

3. A downhole vibration oil production device according to claim 2, characterized in that: The outer side surface of the retaining ring (6-9-4) is provided with a plurality of through grooves along the axial direction as liquid inlet channels, and the outer diameter of the groove wall of the through groove is slightly smaller than the diameter of the reduced diameter section of the pushing piston (6-9-7).

4. A downhole vibration oil production device according to claim 1, characterized in that: The bottom hole accessory comprises an anvil sleeve (7) connected to a lower connecting sleeve (6-14) of a vibration oil production power converter (6), a force transmission rod (8) is slidably arranged in the anvil sleeve (7), and the upper end of the sliding distance is limited by the step of the through hole in the anvil sleeve (7), and the lower end is limited by the pressure sleeve (9).

5. A downhole vibration oil production device according to claim 4, characterized in that: The outer diameter of the force transmission rod (8) is set to a three-step shape, the top of the force transmission rod (8) is set to a certain inner cone angle and matches the hammer head (6-15), the lower small diameter section of the force transmission rod (8) is equipped with a dustproof seal (10) and an expansion sleeve (11), and the lower end is connected to an anvil (12).

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