Electromagnetic seismic source device

Abstract

The present application relates to a kind of electromagnetic seismic source devices, including seismic wave generating mechanism and reset mechanism;Seismic wave generating mechanism includes executive component and pulse generating component, executive component includes the magnetic piece and hammerhead sequentially arranged from top to bottom, the positive input end and the negative input end of pulse generating component are used to access power supply, the positive output end and the negative output end of pulse generating component are one-to-one with the input end and the output end of magnetic piece Electric connection, pulse generating component and magnetic piece can generate electromagnetic driving force together and drive hammerhead to move downward;Reset mechanism is used to drive hammerhead to reset after hammerhead completes hammering.The present application replaces traditional artificial or mechanical hammering by electromagnetic driving mode, realizes the electrification control of hammering process.Electromagnetic driving force can be accurately controlled by adjusting current size, so as to realize the accurate regulation of hammering energy, improve the consistency and repeatability of seismic wave excitation.

Description

Technical Field

[0001] This invention relates to the field of seismic exploration equipment technology, specifically to an electromagnetic seismic source device. Background Technology

[0002] Seismic exploration is one of the important means of obtaining information about underground geological structures. Its core is to infer the structure and properties of the underground medium by exciting seismic waves and receiving their reflected or refracted signals. Traditional methods of exciting seismic waves often involve manual hammering, explosive detonation, or mechanical vibration. These methods have certain drawbacks, such as inaccurate energy control, poor repeatability, low safety, and significant environmental interference.

[0003] In particular, the manual excitation method is limited by the operator's skill level and physical condition in terms of hammering force, impact point, and excitation frequency, resulting in unstable excitation energy and poor waveform consistency, which in turn affects the accuracy and reliability of seismic data. Summary of the Invention

[0004] Based on the above description, the present invention provides an electromagnetic seismic source device, which aims to solve the problem that the energy control of seismic waves generated by existing manual hammering is inaccurate, affecting the accuracy of seismic data.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: This invention provides an electromagnetic seismic source device, comprising: The seismic wave generating mechanism includes an execution component and a pulse generating component. The execution component includes a magnetic element and a hammer head arranged sequentially from top to bottom. The positive and negative input terminals of the pulse generating component are used to connect to a power supply. The positive and negative output terminals of the pulse generating component are electrically connected to the input and output terminals of the magnetic element, respectively. The pulse generating component and the magnetic element work together to generate an electromagnetic driving force to drive the hammer head to move downward. A reset mechanism is used to drive the hammer head to reset after the hammer head has completed its hammering action.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the pulse generating assembly includes a boost power supply, an energy storage element, and a switching transistor. The positive and negative input terminals of the boost power supply are used to connect to a power supply, and the negative output terminal of the boost power supply is grounded. The energy storage element is connected in parallel between the positive and negative input terminals of the boost power supply. The switching transistor is connected in series between the energy storage element and the input terminal of the magnetic component. The switching transistor is used for controlled conduction to allow the energy storage element to discharge to the magnetic component.

[0008] Furthermore, the pulse generating component includes a freewheeling diode, the cathode of which is connected in parallel between one end of the energy storage element and the switching transistor, and the anode of which is connected in parallel between the output terminal of the magnetic component and the other end of the energy storage element.

[0009] Furthermore, the seismic wave generating mechanism includes a fixed plate and at least two guide components. The fixed plate is located below the hammer head and is annular. The at least two guide components are arranged at intervals around the axis of the hammer head. Each of the at least two guide components includes a guide hole and a guide rod. The guide hole is opened on the hammer head, one end of the guide rod passes through the guide hole, and the other end of the guide rod is connected to the fixed plate.

[0010] Furthermore, at least one of the guide components includes an elastic element that is sleeved on the guide rod.

[0011] Furthermore, the reset mechanism includes a lifting assembly, a connecting frame, a locking assembly, and a connecting rod. The connecting frame is connected to the output end of the lifting assembly. The locking assembly is located on the side of the connecting frame facing the magnetic element. The magnetic element is annular. One end of the connecting rod is connected to the locking assembly, and the other end of the connecting rod passes through the hole in the magnetic element and is connected to the hammer.

[0012] Furthermore, the locking assembly includes a ball catch and a ball base. The ball catch is located at one end of the connecting rod, and the ball base is located on the side of the connecting frame facing the magnetic component. The ball base can engage with the ball catch.

[0013] Furthermore, the reset mechanism includes a gripping member disposed within the connecting frame.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: (1) This invention replaces traditional manual or mechanical hammering with electromagnetic drive, realizing the electrification control of the hammering process. The electromagnetic driving force can be precisely controlled by adjusting the current, thereby achieving precise adjustment of the hammering energy and improving the consistency and repeatability of seismic wave excitation. The design of the reset mechanism enables the device to operate continuously, improving exploration efficiency.

[0015] (2) The present invention stores a large amount of electrical energy in a short time through the pulse generation component and releases it at the moment of excitation to form a strong instantaneous current, thereby generating sufficient electromagnetic force to drive the hammer.

[0016] (3) The present invention provides buffering and rebound force after the hammer falls and impacts through the elastic element, so as to prevent the hammer from hitting the ground again due to rebound or inertia, thereby preventing secondary hammering, ensuring that each excitation is a single effective hammering, and improving data consistency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an electromagnetic seismic source device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the seismic wave generator in an embodiment of the present invention; Figure 3 This is a circuit diagram of the pulse generation component in an embodiment of the present invention; Figure 4 This is a schematic diagram of the reset device in an embodiment of the present invention; Figure 5 This is a schematic diagram of the locking component in an embodiment of the present invention; Figure 6 This is an assembly drawing of an electromagnetic seismic source device provided in an embodiment of the present invention; Figure 7 This is a graph showing the speed-displacement of the hammer working over time in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 10. Seismic wave generating mechanism; 11. Actuating component; 111. Magnetic component; 112. Hammer head; 12. Pulse generating component; 121. Boost power supply; 122. Energy storage element; 123. Switching transistor; 124. Freewheeling diode; 13. Fixing plate; 14. Guiding component; 141. Guide hole; 142. Guide rod; 143. Elastic component; 20. Reset mechanism; 21. Lifting assembly; 22. Connecting frame; 23. Locking assembly; 231. Ball catch buckle; 232. Ball catch base; 24. Connecting rod; 25. Gripper; 30. Machine tool. Detailed Implementation

[0020] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0022] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0023] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0024] Reference Figures 1 to 2 As shown, the present invention provides a technical solution: an electromagnetic seismic source device, including a seismic wave generating mechanism 10 and a reset mechanism 20; the seismic wave generating mechanism 10 includes an execution component 11 and a pulse generating component 12, the execution component 11 includes a magnetic element 111 and a hammer head 112 arranged sequentially from top to bottom, the positive and negative input terminals of the pulse generating component 12 are used to connect to a power supply, and the positive and negative output terminals of the pulse generating component 12 are electrically connected to the input and output terminals of the magnetic element 111 respectively, the pulse generating component 12 and the magnetic element 111 cooperate to generate an electromagnetic driving force to drive the hammer head 112 to move downward; the reset mechanism 20 is used to drive the hammer head 112 to reset after the hammer head 112 has completed the hammering.

[0025] For example, the magnetic component 111 can be an electromagnet or an electromagnetic coil, etc.

[0026] In this embodiment, during operation, the pulse generating component 12 converts electrical energy into pulsed currents of specific timing and intensity, which are then transmitted to the magnetic component 111. Under current excitation, the magnetic component 111 generates a strong magnetic field, producing a downward electromagnetic driving force. This force acts directly on the hammer head 112, which, under the influence of the electromagnetic driving force and gravity, accelerates downwards and ultimately impacts the ground with controllable kinetic energy, generating the desired seismic wave signal. After the hammer head 112 completes its impact, the reset mechanism 20 lifts it back to its initial position for the next excitation. By replacing traditional manual or mechanical hammering with electromagnetic drive, the hammering process is electrically controlled. The electromagnetic driving force can be precisely controlled by adjusting the current magnitude and energizing time, thereby achieving precise adjustment of the hammering energy and improving the consistency and repeatability of seismic wave excitation. The design of the reset mechanism 20 allows the device to operate continuously, improving exploration efficiency.

[0027] Reference Figure 3 As shown, in some embodiments, the pulse generating assembly 12 includes a boost power supply 121, an energy storage element 122, and a switching transistor 123. The positive and negative input terminals of the boost power supply 121 are used to connect to a power supply, and the negative output terminal of the boost power supply 121 is grounded. The energy storage element 122 is connected in parallel between the positive and negative input terminals of the boost power supply 121. The switching transistor 123 is connected in series between the energy storage element 122 and the input terminal of the magnetic component 111. The switching transistor 123 is used for controlled conduction to allow the energy storage element 122 to discharge to the magnetic component 111.

[0028] For example, the energy storage element 122 can be a capacitor, etc. The switching transistor 123 can be a thyristor, an insulated-gate bipolar transistor (IGBT), a MOSFET, or a transistor, etc.; when the switching transistor 123 is a thyristor, the anode of the thyristor is electrically connected to the energy storage element 122, the cathode of the thyristor is electrically connected to the input terminal of the magnetic component 111, and the gate of the thyristor is used to connect to the control circuit of the electromagnetic seismic source device; when the switching transistor 123 is an IGBT, the gate of the IGBT is electrically connected to the energy storage element 122, and the gate of the IGBT is electrically connected to the input terminal of the magnetic component 111. The collector of the transistor is electrically connected to the input terminal of the magnetic component 111, and the emitter of the insulated gate bipolar transistor is grounded. When the switching transistor 123 is a MOSFET, the gate of the MOSFET is electrically connected to the energy storage element 122, the drain of the MOSFET is electrically connected to the input terminal of the magnetic component 111, and the source of the MOSFET is grounded. When the switching transistor 123 is a transistor, the base of the transistor is electrically connected to the energy storage element 122, the collector of the transistor is electrically connected to the input terminal of the magnetic component 111, and the emitter of the transistor is grounded.

[0029] In this embodiment, during operation, the boost power supply 121 first charges the energy storage element 122 with constant current or constant voltage, enabling the energy storage element 122 to store sufficient electrical energy. When the charging voltage reaches a preset trigger value, the switch 123 is quickly turned on. At this time, the high-voltage electrical energy stored in the energy storage element 122 is released instantaneously into the magnetic component 111 through the low-impedance path formed by the switch 123, creating a powerful pulse current. This pulse current generates a rapidly changing magnetic field in the magnetic component 111, thereby generating a powerful instantaneous electromagnetic driving force. This working mode of first storing energy and then releasing it instantaneously can generate an instantaneous driving power far greater than that of directly using the power supply, ensuring that the hammer head obtains sufficient final velocity and impact energy. At the same time, by precisely setting the charging voltage and the switching transistor turn-on sequence, the energy released each time can be precisely controlled, realizing the quantification and repeatability of the excitation energy.

[0030] Reference Figure 3 As shown, in some embodiments, the pulse generating assembly 12 includes a freewheeling diode 124, the cathode of which is connected in parallel between one end of the energy storage element 122 and the switching transistor 123, and the anode of which is connected in parallel between the output terminal of the magnetic element 111 and the other end of the energy storage element 122.

[0031] In this embodiment, the freewheeling diode 124 constitutes a crucial protection and energy recovery circuit. When the switch 123 is rapidly turned off from the conducting state, the magnetic component 111, acting as an inductive load, generates a reverse induced electromotive force (EMF) in the same direction as the original current. At this time, the anode potential of the freewheeling diode 124 rises due to the induced EMF, exceeding the cathode potential, and the freewheeling diode 124 conducts in the forward direction. This protection and energy recovery circuit provides a freewheeling path for the residual induced current in the magnetic component 111, allowing the magnetic component 111 to decay gradually.

[0032] The function of the freewheeling diode 124 is as follows: First, it effectively prevents high voltage reverse surge from damaging the energy storage element 122, thus improving circuit reliability; Second, it allows magnetic field energy to be slowly consumed in the protection and energy recovery circuit, avoiding drastic current surges, reducing electromagnetic interference, and making the movement control of the hammer 112 more stable.

[0033] The aforementioned pulse generating component 12, with each impact of the hammer head 112 on the ground, performs one work step downwards, and the pulse generating component 12 discharges once. (Refer to...) Figure 7 (The horizontal axis represents time, and the vertical axis represents both velocity and displacement.) As shown, this is a graph of velocity-displacement changes over time, recorded by the hammer 112 performing multiple operations. It can be seen from the graph that the faster the velocity increases, the faster the displacement increases. When the switch 123 is triggered, the high-voltage current drives the energy storage element 122, enabling the hammer 112 to gain velocity and generate a small displacement in a very short time.

[0034] Reference Figures 1 to 2 As shown, in some embodiments, the seismic wave generating mechanism 10 includes a fixed plate 13 and at least two guide components 14. The fixed plate 13 is located below the hammer head 112 and is annular. The at least two guide components 14 are arranged at intervals around the axis of the hammer head 112. Each of the at least two guide components 14 includes a guide hole 141 and a guide rod 142. The guide hole 141 is opened on the hammer head 112, one end of the guide rod 142 passes through the guide hole 141, and the other end of the guide rod 142 is connected to the fixed plate 13.

[0035] In this embodiment, the guide assembly 14 ensures the stability of the vertical trajectory of the hammer head 112, preventing swaying or rotation and improving the accuracy and repeatability of the hammering. The fixing plate 13 cooperates with multiple guide rods 142 to form a stable support structure, enhancing overall rigidity.

[0036] Reference Figures 1 to 2 As shown, in some embodiments, at least one guide component 14 includes an elastic element 143, which is sleeved on the guide rod 142.

[0037] For example, the elastic element 143 can be a spring or an elastic rubber ring, etc.

[0038] In this embodiment, the elastic element 143 can provide buffering and rebound force after the hammer head 112 falls and impacts, preventing the hammer head 112 from hitting the ground again due to rebound or inertia, thereby preventing secondary hammering, ensuring that each excitation is a single effective hammering, and improving data consistency.

[0039] Reference Figure 1 and Figure 4 As shown, in some embodiments, the reset mechanism 20 includes a lifting assembly 21, a connecting frame 22, a locking assembly 23, and a connecting rod 24. The connecting frame 22 is connected to the output end of the lifting assembly 21. The locking assembly 23 is located on the side of the connecting frame 22 facing the magnetic element 111. The magnetic element 111 is annular. One end of the connecting rod 24 is connected to the locking assembly 23, and the other end of the connecting rod 24 passes through the hole in the magnetic element 111 and is connected to the hammer head 112.

[0040] For example, the lifting assembly 21 can be a linear module or an electric actuator, etc.

[0041] In this embodiment, the lifting assembly 21 provides vertical lifting force, and the locking assembly 23 can be released when the hammer head 112 falls and locked when it is lifted, so that the lifting assembly 21 drives the hammer head 112 to reset. The annular magnetic component 111 is designed to facilitate the passage of the connecting rod 24 and the installation of the hammer head 112.

[0042] Reference Figure 1 and Figures 4 to 5As shown, in some embodiments, the locking component 23 includes a ball catch 231 and a ball base 232. The ball catch 231 is located at one end of the connecting rod 24, and the ball catch 232 is located on the side of the connecting frame 22 facing the magnetic component 111. The ball base 231 can engage with the ball catch 232.

[0043] For example, the insertion part of the ball-operated base 232 is teardrop-shaped, etc., and the ball-operated buckle 231 has a slot that is adapted to the buckle part.

[0044] In this embodiment, when the reset mechanism 20 lifts the connecting frame 22, the ball catch 231 is guided along the teardrop-shaped inclined surface, ultimately causing the insertion part of the ball catch base 232 to engage in the slot, achieving mechanical self-locking. During the excitation phase, the electromagnetic driving force drives the hammer head 112 to fall at high speed. The vertical downward force applied to the ball catch 231 quickly exceeds the locking force of the teardrop-shaped structure, forcing the groove wall of the ball catch 231 to undergo elastic deformation and slide off along the inclined surface, achieving instantaneous and complete mechanical separation, ensuring that the hammer head 112 is free from any mechanical entanglement or resistance during its descent. This facilitates locking during reset and rapid release during excitation, ensuring the reliability of the connection during the reset phase and avoiding the shortcomings of traditional rigid connections or friction-type clamping mechanisms, such as release delays, incomplete separation, or interference with the hammer's degree of freedom, thereby improving the consistency of hammer energy.

[0045] Reference Figure 1 and Figure 4 As shown, in some embodiments, the reset mechanism 20 includes a gripper 25 disposed within the connecting frame 22.

[0046] For example, the gripper 25 can be an electric gripper or a pneumatic gripper, etc.

[0047] In this embodiment, during the reset process of the hammer head 112, the gripper 25 actively clamps the ball catch 231, providing auxiliary fixation and radial positioning for the upward movement of the connecting rod 24 and the hammer head 112. This prevents the hammer head 112 from shaking or shifting due to inertia or mechanical clearance at the end of the reset process, ensuring that the ball catch base 232 and the ball catch 231 can accurately and reliably complete the locking. When the pulse generating component 12 is about to be energized and the hammer head 112 is ready to strike downwards, the gripper 25 first releases the ball catch 231, allowing the hammer head 112 to be in a free-hanging state. This ensures that the huge electromagnetic driving force generated subsequently can act on the hammer head 112 completely and without interference, avoiding energy loss or action lag caused by the residual clamping force of the gripper 25. This ensures the consistency of the initial conditions and energy transfer efficiency of each hammering action, improving the operating accuracy and reliability of the device.

[0048] Reference Figure 6As shown, in some embodiments, the electromagnetic seismic source device includes a platform 30, which has a first surface and a second surface opposite to each other. A lifting assembly 21 is mounted on the first surface, and a magnetic component 111 is disposed on the second surface. The first surface has a through hole that penetrates the second surface, through which a connecting rod 24 passes.

[0049] For example, the pulse generating component 12 may be mounted on a first surface or a second surface.

[0050] In this embodiment, the machine base 30 provides a stable support foundation for the seismic wave generator 10 and the reset device 20.

[0051] In addition, machine 30 can be a mobile machine.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electromagnetic seismic source device, characterized in that, include: The seismic wave generating mechanism (10) includes an execution component (11) and a pulse generating component (12). The execution component (11) includes a magnetic element (111) and a hammer (112) arranged sequentially from top to bottom. The positive and negative input terminals of the pulse generating component (12) are used to connect to a power supply. The positive and negative output terminals of the pulse generating component (12) are electrically connected to the input and output terminals of the magnetic element (111) respectively. The pulse generating component (12) and the magnetic element (111) work together to generate an electromagnetic driving force to drive the hammer (112) to move downward. A reset mechanism (20) is used to drive the hammer (112) to reset after the hammer (112) has completed its hammering.

2. The electromagnetic seismic source device according to claim 1, characterized in that, The pulse generating assembly (12) includes a boost power supply (121), an energy storage element (122), and a switching transistor (123). The positive and negative input terminals of the boost power supply (121) are used to connect to a power supply. The negative output terminal of the boost power supply (121) is grounded. The energy storage element (122) is connected in parallel between the positive and negative input terminals of the boost power supply (121). The switching transistor (123) is connected in series between the energy storage element (122) and the input terminal of the magnetic component (111). The switching transistor (123) is used to be turned on in a controlled manner so that the energy storage element (122) discharges to the magnetic component (111).

3. The electromagnetic seismic source device according to claim 2, characterized in that, The pulse generating assembly (12) includes a freewheeling diode (124), the cathode of which is connected in parallel between one end of the energy storage element (122) and the switching transistor (123), and the anode of which is connected in parallel between the output end of the magnetic component (111) and the other end of the energy storage element (122).

4. The electromagnetic seismic source device according to claim 1, characterized in that, The seismic wave generating mechanism (10) includes a fixed plate (13) and at least two guide components (14). The fixed plate (13) is located below the hammer head (112) and is annular. The at least two guide components (14) are arranged at intervals around the axis of the hammer head (112). Each of the at least two guide components (14) includes a guide hole (141) and a guide rod (142). The guide hole (141) is opened on the hammer head (112). One end of the guide rod (142) passes through the guide hole (141) and the other end of the guide rod (142) is connected to the fixed plate (13).

5. The electromagnetic seismic source device according to claim 4, characterized in that, At least one of the guide components (14) includes an elastic element (143) sleeved on the guide rod (142).

6. The electromagnetic seismic source device according to any one of claims 1 to 5, characterized in that, The reset mechanism (20) includes a lifting assembly (21), a connecting frame (22), a locking assembly (23), and a connecting rod (24). The connecting frame (22) is connected to the output end of the lifting assembly (21). The locking assembly (23) is located on the side of the connecting frame (22) facing the magnetic component (111). The magnetic component (111) is annular. One end of the connecting rod (24) is connected to the locking assembly (23), and the other end of the connecting rod (24) passes through the hole of the magnetic component (111) and is connected to the hammer head (112).

7. The electromagnetic seismic source device according to claim 6, characterized in that, The locking assembly (23) includes a ball catch (231) and a ball base (232). The ball catch (231) is located at one end of the connecting rod (24), and the ball base (232) is located on the side of the connecting frame (22) facing the magnetic component (111). The ball base (232) can engage with the ball catch (231).

8. The electromagnetic seismic source device according to claim 7, characterized in that, The reset mechanism (20) includes a gripper (25) which is located within the connecting frame (22).

9. The electromagnetic seismic source device according to claim 8, characterized in that, Includes a machine base (30) having a first surface and a second surface opposite to each other, the lifting assembly (21) is mounted on the first surface, the magnetic component (111) is disposed on the second surface, the first surface has a through hole that passes through the second surface, the through hole is for the connecting rod (24) to pass through.

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