Electric vibration tool

Abstract

The utility model discloses an electric vibration tool which comprises a driving mechanism, a pre-pressure loading mechanism and a guide short section, the pre-pressure loading mechanism, the guide short section and the driving mechanism are sequentially connected from top to bottom, an output shaft of the driving mechanism is provided with a turning transmission mechanism, and the turning transmission mechanism penetrates through the guide short section to be in contact with the pre-pressure loading mechanism; and the turning transmission mechanism is used for changing rotary motion into linear motion. The electric vibration tool can be controlled on the ground to achieve repeated up-and-down movement, impact and vibration, so that a gap is formed between an instrument and a blocked object to achieve jam release, and the working efficiency is improved. The tool is suitable for getting rid of the measuring and adjusting instrument when the measuring and adjusting instrument is clamped in the construction process, the getting-out effect is reliable, and support is provided for guaranteeing smooth completion of measuring and adjusting construction.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole tools, in particular to an electric vibration tool. Background Art

[0002] In the later development of oil fields, water injection wells may get stuck during the test and adjustment due to factors such as water injection quality, tubing quality, and scaling, which affects the normal test and adjustment work. Therefore, timely solving the problem and restoring the normal test and adjustment work is an effective way to ensure the efficient development of oil fields. Due to the limitations of conventional structures, it is necessary to increase new scientific and technological forces and new structures, increase the number of instruments to get out of the jam, and overcome difficulties in three aspects:

[0003] On the one hand, there is interference from conventional machinery. After the instrument is lowered into the well, it gets stuck due to various impurities, silt, scaling, etc. The instrument cannot move in the wellbore. Applying force to lift it up may even break the cable, making it more difficult to salvage it.

[0004] The second aspect is affected by the internal power and size. It is necessary to increase the internal power and take into account the specific installation size. An electric motor and a control mechanism need to be added internally. It is also required to be able to withstand high-pressure sealing and transmit signals, which requires a more sophisticated structure.

[0005] The third aspect is that the vibration tool needs to pass the line up and down, and under high temperature and high pressure conditions, both sealing and signal transmission require higher passing requirements. Only by solving all signal problems under high temperature and high pressure can the problem be solved.

[0006] In summary, it is necessary to install a motor and a control mechanism in the vibration tool, and design sufficient sealing and pressure-resistant and temperature-resistant structures to achieve intelligent control of the vibration tool. If the above problems cannot be solved, it will be difficult to achieve intelligent control.

[0007] Publication (Announcement) No.: CN218293547U discloses a shock device and a shock bailer, including a shock tube, the lower end of which is closed, a shock rod is movably installed in the shock tube along its axis, a perforation is provided at the upper end of the shock tube, one end of the shock rod passes through the perforation upward, the shock rod has a shock part and a sealing mating surface, the part above the sealing mating surface of the shock rod and the shock tube form an upper chamber, the part below the sealing mating surface of the shock rod and the shock tube form a lower chamber, the shock rod is provided with a blind hole with an opening facing downward, the open end of the blind hole is connected to the lower chamber, the lower end of the shock rod is connected to a one-way valve that allows the lubricating oil in the lower chamber to pass from bottom to top and enter the blind hole, and the shock rod is provided with a through hole connecting the blind hole and the upper chamber. The shock rod and the shock tube are repeatedly shocked to open the stuck point, so as to achieve the purpose of vibration unblocking and avoid directly breaking the wire rope.

[0008] This existing technology provides power by lifting and lowering as a shock, and the steel cable will still be subjected to the shock force, and there is still a risk of being pulled apart.

[0009] Publication (Announcement) No.: CN210598889U discloses a jar for underground operation, including a housing, a piston and a fixed plate are arranged inside the housing, the bottom of the piston is connected to the top of the shaft core, the bottom of the shaft core passes through the fixed plate and the housing in sequence and extends to the bottom of the housing, the top of the housing is provided with an oil nozzle, the bottom of the oil nozzle is connected to the top of the housing, and the left and right sides of the surface of the shaft core are provided with placement grooves. The jar for underground operation drives the shaft core to move downward through the piston, and then drives the external continuous pipe to move downward; when the external hydraulic oil is released, the internal pressure of the housing is lost, so that the internal compression spring of the clamp and the reaction force of the spring facilitate the shaft core to move upward, thereby periodically reciprocating, so that the shaft core vibrates the external continuous pipe, effectively reducing the difficulty of unblocking.

[0010] The prior art is set at the wellhead, which results in a large waste of shock force and high energy consumption.

[0011] Publication (Announcement) No.: CN206554852U, discloses a downhole operation shock buckle release and salvage device, including a vibrator, a hydrogen nozzle, a chlorine nozzle, a vibration core, a limit plate and a fish connection lock, a lower extension pipe is provided on the upper side of the vibrator, a hydrogen conduit and a chlorine conduit are provided in the lower extension pipe, exhaust holes are provided on both sides of the vibrator, a clamping pipe is provided on the lower side of the vibrator, and the clamping pipe is connected to the fixed claw through a rotating shaft, a hydrogen nozzle is provided on the upper side of the inner wall of the vibrator, a chlorine nozzle is provided on the right side of the hydrogen nozzle, a vibration core is provided inside the vibrator, limit plates are provided on the left and right sides of the upper end of the vibration core, and a fish connection lock is provided on the lower side of the vibration core. It uses hydrogen and chlorine reaction to cause gas expansion vibration to vibrate the fish, so that the stuck part can be loosened, and at the same time, the fish is fixed by spiral fixing and pressure rod fixing, which is more convenient to salvage the fish, and at the same time, the vibration effect is better, and the efficiency and success rate of salvaging the fish are higher.

[0012] The prior art is set at the wellhead, which results in a large waste of shock force and high energy consumption.

[0013] In short, the technical solutions of the above-disclosed technologies, the technical problems to be solved and the beneficial effects produced are all different from the present utility model. Regarding more technical features, technical problems to be solved and the beneficial effects of the present utility model, there is no technical inspiration in the above-disclosed technical documents. Utility Model Content

[0014] In view of the above-mentioned defects in the prior art, the purpose of the utility model is to provide an electric vibration tool, so that the measuring and adjusting instrument can record the water absorption data of each layer during layered measuring and adjusting construction according to the injection requirements. If the instrument is stuck when lifting or lowering, the corresponding downhole tubing and ground operations can be coordinated to make the measuring and adjusting instrument unblocked by vibration and resume normal construction.

[0015] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0016] An electric vibration tool includes a driving mechanism, a pre-pressure loading mechanism, and a guide short section; the pre-pressure loading mechanism, the guide short section, and the driving mechanism are connected in sequence from top to bottom, a direction-changing transmission mechanism is provided on the output shaft of the driving mechanism, the direction-changing transmission mechanism passes through the guide short section and contacts the pre-pressure loading mechanism; the direction-changing transmission mechanism converts rotational motion into linear motion.

[0017] Furthermore, the pre-pressure loading mechanism includes an upper gripping head, a spring, and a fixed hammer;

[0018] Specifically, the upper gripping head is composed of a thread-passing cone head and a cylinder connected in sequence, the thread-passing cone head is used for threading and fixing the wire, and a force ring is provided at the lower end of the inner wall of the cylinder;

[0019] Specifically, the fixed hammer passes through the stress ring, and a hammer ring is provided on the upper part of the fixed hammer.

[0020] Specifically, the spring is arranged in the cylinder, the spring pushes over the lower end surface of the wire cone head and the upper end surface of the lower top hammer ring, and the hammer handle of the fixed clamping hammer is in contact with the transmission structure.

[0021] Furthermore, the guide sub includes an upper shell and a main body;

[0022] Specifically, the main body is cylindrical, a through hole is provided on a side wall of the main body, a guide pin is provided in the through hole, a guide groove is provided in the direction-changing transmission mechanism, and the guide pin is inserted into the guide groove.

[0023] Furthermore, the driving mechanism includes a motor, a lower housing, a control module, and an external connector;

[0024] Specifically, the upper end of the lower shell is connected to the lower end of the main body, and the lower end of the lower shell is connected to the upper end of the external connector;

[0025] Specifically, the motor is arranged in the lower housing, the control module is arranged in the lower housing and is located below the motor, and the output shaft of the motor is connected to the direction-changing transmission mechanism.

[0026] Furthermore, threaded O-rings are used to seal the main body and the upper shell and the lower shell; the external connector has an external plug and a sealing surface, and can be connected to an instrument.

[0027] Furthermore, the direction-changing transmission mechanism includes a limit assembly, a transmission shaft, a connecting shaft, and a moving sleeve;

[0028] Specifically, the limit assembly is arranged in the lower housing, located above the motor, and connected to the output shaft of the motor;

[0029] Specifically, the transmission shaft and the connecting shaft are arranged in the main body, the lower end of the transmission shaft is connected to the limit assembly, and the upper end of the transmission shaft is provided with an external threaded portion;

[0030] Specifically, a countersunk hole is provided at the lower end of the connecting shaft, an internal threaded portion is provided on the inner wall of the countersunk hole, and the external threaded portion is partially screwed with the internal threaded portion, leaving a space;

[0031] Specifically, the guide groove in the direction-changing transmission mechanism is located on the outer wall of the connecting shaft, and the connecting shaft changes rotation into linear motion under the restriction of the guide pin.

[0032] Furthermore, the lower end of the movable sleeve is connected to the upper end of the connecting shaft, and the movable sleeve is provided with a first conical surface with an inner diameter that is thick at the top and thin at the bottom;

[0033] Specifically, the outer wall of the hammer handle of the fixed hammer is provided with a second conical surface matching the first conical surface.

[0034] Further, the limit assembly includes a driving sleeve, a limit block, an upper travel switch, and a lower travel switch;

[0035] Specifically, the upper end of the drive sleeve is connected to the lower end of the transmission shaft, and the lower end of the drive sleeve is connected to the motor output shaft;

[0036] Specifically, the upper travel switch and the lower travel switch are arranged in the annulus between the driving sleeve and the lower housing, and the upper travel switch is above the lower travel switch;

[0037] Specifically, the limit block is sleeved on the driving sleeve, and the limit block sleeve is threadedly connected to the driving sleeve;

[0038] Specifically, a limit plate is arranged in the annulus between the driving sleeve and the lower shell, and the limit plate makes the limit block unable to rotate and can only move linearly, and the limit block extends into the space between the upper travel switch and the lower travel switch.

[0039] Furthermore, the fixed hammer is provided with a central wire hole;

[0040] Specifically, the outer wall of the main body is provided with a wiring groove, and the lower end wall of the wiring groove is provided with a wire hole penetrating to the lower end of the main body;

[0041] Specifically, a wire passing countersunk hole is provided at the upper end of the connecting shaft, and the wire passing countersunk hole is connected with the wiring groove via a wiring through hole.

[0042] Furthermore, a rubber sleeve is provided at the upper end of the wire hole to achieve sealed wiring.

[0043] Compared with the prior art, the utility model has the following beneficial effects:

[0044] 1. The electric vibration tool of the utility model can be controlled from the ground to realize multiple reciprocating up and down movements, impact and vibration, so that a gap appears between the instrument and the blocked object, thereby unblocking the jam and improving work efficiency.

[0045] 2. This tool is suitable for the measurement and adjustment instruments to get out of trouble when they are stuck during the construction process. The tool has a reliable effect and provides support to ensure the smooth completion of the measurement and adjustment construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a structural schematic diagram of an electric vibration tool of the utility model;

[0047] In the figure: upper grab head 1; spring 2; fixed hammer 3; movable sleeve 4; upper shell 5; connecting shaft 6; rubber sleeve 7; main body 8; transmission shaft 9; driving sleeve 10; limit block 11; motor 12; lower shell 13; control module 14; external connector 15. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] Embodiment 1:

[0050] See also Figure 1 The utility model provides an electric vibration tool, comprising a pre-pressure loading mechanism, a guide short section, and a driving mechanism connected in sequence. A direction-changing transmission mechanism is arranged on the output shaft of the driving mechanism, and the direction-changing transmission mechanism passes through the guide short section and contacts the pre-pressure loading mechanism.

[0051] The pre-pressure loading mechanism includes an upper gripping head 1, a spring 2, and a fixed hammer 3; the upper gripping head 1 is composed of a wire-passing cone head and a cylinder connected in sequence, the wire-passing cone head is used for threading and fixing the wire, a force ring is provided at the lower end of the inner wall of the cylinder, the fixed hammer 3 passes through the force ring, and a hammer ring is provided at the upper part of the force ring of the fixed hammer 3, the spring 2 is arranged in the cylinder, the lower end face of the wire-passing cone head is pushed up by the spring, and the upper end face of the hammer ring is pushed down by the spring, and the hammer handle of the fixed hammer 3 is in contact with the transmission structure.

[0052] The guide short section includes an upper shell 5 and a main body 8; the main body 8 is cylindrical, and a through hole is provided on the side wall of the main body 8, a guide pin is provided in the through hole, and a guide groove is provided in the direction-changing transmission mechanism, and the guide pin is inserted into the guide groove.

[0053] The driving mechanism includes a motor 12, a lower shell 13, a control module 14, and an external connector 15; the upper end of the lower shell 13 is connected to the lower end of the main body 8, and the lower end of the lower shell 13 is connected to the upper end of the external connector 15. The motor 12 is arranged in the lower shell 13, and the control module 14 is arranged in the lower shell 13 below the motor 12. The output shaft of the motor 12 is connected to the direction-changing transmission mechanism; the external connector 15 has an external plug and a sealing surface, and can be normally installed with the instrument.

[0054] The direction-changing transmission mechanism includes a limit assembly, a transmission shaft 9, a connecting shaft 6, and a movable sleeve 4; the limit assembly is arranged in the lower housing 13, located above the motor 12, and connected to the output shaft of the motor 12, the transmission shaft 9 and the connecting shaft 6 are arranged in the main body, the lower end of the transmission shaft 9 is connected to the limit assembly, the upper end of the transmission shaft 9 is provided with an external threaded portion, the lower end of the connecting shaft 6 is provided with a countersink, the inner wall of the countersink is provided with an internal threaded portion, the external threaded portion is partially screwed with the internal threaded portion, leaving a space, the guide groove in the transmission mechanism is located on the outer wall of the connecting shaft 6, and the connecting shaft 6 changes rotation into linear motion under the restriction of the guide pin;

[0055] The lower end of the movable sleeve 4 is connected to the upper end of the connecting shaft 6. The movable sleeve 4 is provided with a first conical surface with an inner diameter that is thick at the top and thin at the bottom. The outer wall of the hammer handle of the fixed hammer 3 is provided with a second conical surface that matches the first conical surface. When the movable sleeve 4 moves upward, the elastic force of the spring 2 and the friction force between the movable sleeve 4 and the force ring increase synchronously. After the compression of the spring 2 is completed, the friction force between the movable sleeve 4 and the force ring continues to increase. When the friction force is equal to the elastic force of the spring 2, the preloading is completed.

[0056] The limit assembly includes a drive sleeve 10, a limit block 11, an upper travel switch, and a lower travel switch; the upper end of the drive sleeve 10 is connected to the lower end of the transmission shaft 9, and the lower end of the drive sleeve 10 is connected to the output shaft of the motor 12. The upper travel switch and the lower travel switch are arranged in the annulus between the drive sleeve 10 and the lower outer shell 13, and the upper travel switch is above the lower travel switch. The upper travel switch and the lower travel switch are connected to the control module 14. The limit block 11 is sleeved on the drive sleeve 10, and the limit block 11 is threadedly connected to the drive sleeve 10. A limit plate is arranged in the annulus between the drive sleeve 10 and the lower outer shell 13. The limit plate prevents the limit block 11 from rotating and can only move in a straight line. The limit block 11 extends into the space between the upper travel switch and the lower travel switch.

[0057] It should be noted that the control module 14 can be an electronic control device such as a programmable controller or a single-chip microcomputer, which can be purchased from the market and used. Those skilled in the art are aware of this.

[0058] Embodiment 2:

[0059] On the basis of Example 1, this embodiment provides a wire passing solution for the tool, wherein the fixed hammer 3 is provided with a central wire passing hole; the outer wall of the main body 8 is provided with a wiring groove, the lower end wall of the wiring groove is provided with a wire passing hole extending through the lower end of the main body 8, and the upper end of the wire passing hole is provided with a rubber sleeve 7 for realizing sealed wiring; the upper end of the connecting shaft 6 is provided with a wire passing countersunk hole, and the wire passing countersunk hole is connected to the wiring groove via a wiring through hole.

[0060] The wire-passing hole and the rubber sleeve 7 play a role of sealing and guiding, and can transmit signals under high temperature and high pressure.

[0061] The main body 8 and the upper shell 5 and the lower shell 13 are sealed by threaded O-rings.

[0062] During operation, the signal is transmitted to the control module through the cable. After the signal is transmitted, the control module 14 executes the command after processing, or the data or instructions of the instrument below are transmitted to the ground after processing by the control module 14 for ground personnel to handle.

[0063] Embodiment 3:

[0064] This embodiment provides a method for using this tool:

[0065] S1. Install the upper gripper 1, upper housing 4, main body 8, upper housing 5, lower housing 13, external connector 15 and other components to form a whole. The cable is installed through the upper gripper 1, passes through the fixed hammer 3, rubber sleeve 7, main body 8 and then connected to the control module 14. The external connector 15 is connected to the instrument at the bottom.

[0066] S2, when working, the signal is transmitted to the control module 14 through the cable, and the control module 14 controls the motor 12 to rotate forward, driving the transmission shaft 9 and the driving sleeve 10 installed and combined to rotate forward together, so that the limit block 11 moves upward in a straight line, and the connecting shaft 6 moves upward in a straight line under the influence of the guide groove and the positioning pin on the main body 8, ensuring that the moving sleeve 4 moves upward in a straight line, and the fixed clamping hammer 3 moves upward to compress the spring 2. At the same time, the moving sleeve 4 gradually tightens the hammer handle of the fixed clamping hammer 3. When the limit block 11 touches the upper travel switch, the preloading is completed; tightening the hammer handle of the fixed clamping hammer 3 can prevent the fixed clamping hammer 3 from suddenly moving downward and damaging the motor 12 during unloading;

[0067] S3, the signal is transmitted to the control module 14 through the cable, the control module 14 controls the motor 12 to rotate in the opposite direction, the transmission shaft 9 and the driving sleeve 10 rotate in the opposite direction together, the movable sleeve 4 moves downward along a straight line, the movable sleeve 4 releases the hammer handle of the fixed clamping hammer 3, the energy of the spring 2 is released, and the hammer ring of the fixed clamping hammer 3 hits the force ring to generate vibration;

[0068] S4. Repeat S2 and S3 to free the instrument from the jam.

[0069] This tool is suitable for unblocking measuring and adjusting instruments when they are stuck during construction. The unblocking effect is reliable and provides support to ensure the smooth completion of measuring and adjusting construction.

[0070] All components and connection methods of components not discussed in this application belong to the known technologies in this technical field and can be directly applied without further explanation.

[0071] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0072] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" 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, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0073] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric vibration tool, comprising a driving mechanism, characterized in that: It also includes a pre-pressure loading mechanism and a guide nipple; The pre-pressure loading mechanism, the guide short section, and the driving mechanism are connected in sequence from top to bottom, and a direction-changing transmission mechanism is arranged on the output shaft of the driving mechanism, and the direction-changing transmission mechanism passes through the guide short section and contacts the pre-pressure loading mechanism; The direction-changing transmission mechanism converts the rotational motion into a linear motion.

2. An electric vibration tool according to claim 1, characterized in that: The pre-pressure loading mechanism comprises an upper gripping head, a spring, and a fixed clamping hammer; The upper gripping head is composed of a thread-passing cone head and a cylinder connected in sequence, the thread-passing cone head is used for threading and fixing the wire, and a force ring is arranged at the lower end of the inner wall of the cylinder; The fixed hammer passes through the stress ring, and a hammer ring is arranged on the upper part of the fixed hammer. The spring is arranged in the cylinder, the spring pushes over the lower end surface of the wire cone head and the upper end surface of the lower top hammer ring, and the hammer handle of the fixed clamping hammer contacts the transmission structure.

3. An electric vibration tool according to claim 2, characterized in that: The guide nipple comprises an upper shell and a main body; The main body is cylindrical, a through hole is provided on the side wall of the main body, a guide pin is provided in the through hole, a guide groove is provided in the direction-changing transmission mechanism, and the guide pin is inserted into the guide groove.

4. An electric vibration tool according to claim 3, characterized in that: The driving mechanism includes a motor, a lower housing, a control module, and an external connector; The upper end of the lower shell is connected to the lower end of the main body, and the lower end of the lower shell is connected to the upper end of the external connector; The motor is arranged in the lower housing, the control module is arranged in the lower housing and is located below the motor, and the output shaft of the motor is connected to the direction-changing transmission mechanism.

5. An electric vibration tool according to claim 4, characterized in that: The main body and the upper shell and the lower shell are sealed by threaded O-rings; the external connector has an external plug and a sealing surface and can be connected to an instrument.

6. An electric vibration tool according to claim 4, characterized in that: The direction-changing transmission mechanism includes a limit assembly, a transmission shaft, a connecting shaft, and a moving sleeve; The limit assembly is arranged in the lower housing, located above the motor, and connected to the output shaft of the motor; The transmission shaft and the connecting shaft are arranged in the main body, the lower end of the transmission shaft is connected to the limit assembly, and the upper end of the transmission shaft is provided with an external threaded portion; A countersunk hole is provided at the lower end of the connecting shaft, an internal threaded portion is provided on the inner wall of the countersunk hole, and the external threaded portion is partially screwed with the internal threaded portion, leaving a space; The guide groove in the direction-changing transmission mechanism is located on the outer wall of the connecting shaft, and the connecting shaft changes rotation into linear motion under the restriction of the guide pin.

7. An electric vibration tool according to claim 6, characterized in that: The lower end of the movable sleeve is connected to the upper end of the connecting shaft, and the movable sleeve is provided with a first conical surface with an inner diameter of being thick at the top and thin at the bottom; The outer wall of the hammer handle of the fixed clamping hammer is provided with a second conical surface matched with the first conical surface.

8. An electric vibration tool according to claim 6, characterized in that: The limit assembly includes a drive sleeve, a limit block, an upper travel switch, and a lower travel switch; The upper end of the drive sleeve is connected to the lower end of the transmission shaft, and the lower end of the drive sleeve is connected to the motor output shaft; The upper travel switch and the lower travel switch are arranged in the annulus between the driving sleeve and the lower housing, the upper travel switch is above the lower travel switch, and the upper travel switch and the lower travel switch are connected to the control module; The limit block is sleeved on the driving sleeve, and the limit block sleeve is threadedly connected to the driving sleeve; A limit plate is arranged in the annular space between the driving sleeve and the lower shell, and the limit plate makes the limit block unable to rotate and can only move linearly, and the limit block extends into the space between the upper travel switch and the lower travel switch.

9. An electric vibration tool according to claim 6, characterized in that: The fixed hammer is provided with a central wire hole; The outer wall of the main body is provided with a wiring groove, and the lower end wall of the wiring groove is provided with a wire hole penetrating to the lower end of the main body; The upper end of the connecting shaft is provided with a wire passing countersunk hole, and the wire passing countersunk hole is connected with the wiring groove through a wiring through hole.

10. An electric vibration tool according to claim 9, characterized in that: A rubber sleeve is arranged at the upper end of the wire hole to realize sealed wiring.

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