Drop hammer seismic source secondary excitation prevention device

Abstract

The invention belongs to the technical field of source vehicle corollary equipment, and particularly relates to a drop hammer source anti-secondary excitation device, which comprises an anti-secondary excitation body, the anti-secondary excitation body comprises a controller and a mounting plate, the mounting plate is provided with a mounting hole, the mounting plate is fixedly mounted on a source vehicle, and the controller is connected with the controller. A clamping assembly used for clamping a drop hammer is installed on the installation plate, a sound sensor used for detecting sound is installed on the installation plate, through the sound sensor and a controller, the clamping assembly is triggered to clamp the drop hammer, signal interference caused by secondary excitation of the drop hammer is blocked, and the accuracy and reliability of exploration data acquisition are ensured. Meanwhile, the workload and difficulty of subsequent seismic wave signal processing are greatly reduced, and the blank in the prior art is filled.

Description

Technical Field

[0001] This invention relates to the field of equipment technology for seismic source vehicles, specifically a device for preventing secondary excitation of a falling hammer seismic source. Background Technology

[0002] In seismic exploration and other engineering projects, drop hammer seismic sources are commonly used to generate seismic wave signals. However, existing seismic source vehicles lack a dedicated structure to prevent secondary excitation of the drop hammer. After completing the initial excitation, the drop hammer bounces back, causing secondary excitation and signal interference. This affects the accuracy and reliability of exploration data and increases the workload and difficulty of subsequent seismic wave signal processing.

[0003] To address the secondary excitation problem in existing drop hammer seismic sources, there is an urgent need to develop a reliable and adaptable anti-secondary excitation device for drop hammers to fill the gap in existing technology and ensure the accuracy of source excitation and seismic wave signal acquisition. To this end, we propose an anti-secondary excitation device for drop hammer seismic sources. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a device for preventing secondary excitation of a falling hammer vibration source, thus solving the technical problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A device for preventing secondary excitation of a falling hammer seismic source includes a secondary excitation prevention body, which includes a controller and a mounting plate. The mounting plate has mounting holes and is fixedly mounted on a seismic source vehicle. The mounting plate is equipped with a clamping assembly for clamping the falling hammer and a sound sensor for detecting sound.

[0006] Preferably, the clamping assembly includes an electric push rod, which is fixedly mounted on a mounting plate. A clamping seat is fixedly connected to the side of the mounting plate away from the electric push rod. The bottom of the clamping seat is fixedly connected to a bottom fixing plate. A gripper is hingedly mounted on the bottom fixing plate. A moving block is fixedly connected to the output end of the electric push rod. The moving block and the gripper are connected by a hinge block.

[0007] Preferably, the bottom fixed block is provided with a guide rail, and the moving block is slidably connected to the guide rail.

[0008] Preferably, the gripper is equipped with an anti-slip block.

[0009] Preferably, a pad is fixedly connected to the bottom fixing plate, and a top fixing plate is fixedly connected to the pad.

[0010] Preferably, a protective box is also fixedly connected to the mounting plate, and the sound sensor is installed inside the protective box.

[0011] This invention provides a device for preventing secondary excitation of a falling hammer vibration source. Compared with the prior art, it has the following advantages: 1. By linking the sound sensor and the controller, the sound signal of the first excitation of the falling hammer is captured, triggering the clamping component to respond, thereby stabilizing the clamping of the falling hammer, blocking the signal interference caused by the second excitation of the falling hammer, ensuring the accuracy and reliability of exploration data acquisition, and also greatly reducing the workload and difficulty of subsequent signal processing, filling the gap in existing technology. 2. The gripper design, combined with the guide rail structure of the bottom fixing plate, ensures smooth clamping action and even force distribution. The anti-slip block of the gripper increases the clamping friction to prevent the drop hammer from loosening and slipping, and also buffers the clamping pressure to avoid damaging the surface of the drop hammer. 3. The sound sensor is installed inside the protective box, providing waterproof, dustproof, and impact protection; 4. The mounting plate is connected to the vehicle body through mounting holes, and the installation position can be adjusted to adapt to various needs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a schematic diagram of the mounting plate structure of the present invention; Figure 4 This is a schematic diagram of the clamping component structure of the present invention; Figure 5 This is an exploded view of the clamping assembly of the present invention; Figure 6 This is a schematic diagram of the internal structure of the protective box of the present invention.

[0013] In the diagram: 1. Anti-secondary excitation body; 2. Mounting plate; 3. Mounting hole; 4. Electric push rod; 5. Protective box; 6. Bottom fixing plate; 7. Top fixing plate; 8. Gripper; 9. Anti-slip block; 10. Clamping seat; 11. Hinge block; 12. Moving block; 13. Pad block; 14. Sound sensor. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1-6The present invention provides a technical solution: a falling hammer vibration source anti-secondary excitation device, including an anti-secondary excitation body 1, the anti-secondary excitation body 1 including a controller and a mounting plate 2, the mounting plate 2 having a mounting hole 3, the mounting plate 2 being fixedly mounted on a vibration source vehicle, the mounting plate 2 being equipped with a clamping component for clamping the falling hammer, and the mounting plate 2 being equipped with a sound sensor 14 for detecting sound.

[0016] The clamping assembly includes an electric push rod 4, which is fixedly mounted on a mounting plate 2. A clamping seat 10 is fixedly connected to the side of the mounting plate 2 away from the electric push rod 4. The bottom of the clamping seat 10 is fixedly connected to a bottom fixing plate 6. A gripper 8 is hingedly mounted on the bottom fixing plate 6. A moving block 12 is fixedly connected to the output end of the electric push rod 4. The moving block 12 and the gripper 8 are connected through a hinge block 11.

[0017] A guide rail is provided on the bottom fixed block 6, and the moving block 12 is slidably connected to the guide rail.

[0018] Anti-slip block 9 is installed on the inside of the gripper 8.

[0019] A pad 13 is fixedly connected to the bottom fixing plate 6, and a top fixing plate 10 is fixedly connected to the pad 13. The pad 13 limits the maximum stroke of the moving block 12 and plays a supporting and connecting role in the clamping assembly.

[0020] When assembling the clamping assembly, firstly, the gripper 8 is hinged to the bottom fixing plate 6. Then, the gripper 8 is hinged to the hinge block 11, and then the hinge block 11 is hinged to the moving block 12. Next, the electric push rod 4, the clamping seat 10, and the bottom fixing plate 6 are fixed with bolts. The moving block 12 has a hole in the middle. Then, the output shaft of the electric push rod 4 passes through the hole in the moving block 12 and is fixedly connected to the moving block 12. Finally, the top fixing plate 7 is screwed onto the bottom fixing plate 6. The top fixing plate 7 is used to protect the top of the clamping assembly, thus completing the assembly of the clamping assembly. This clamping assembly can be easily disassembled and maintained.

[0021] A protective box 5 is also fixedly connected to the mounting plate 2, and the sound sensor 14 is installed inside the protective box 5.

[0022] The protective box 5 is used to protect the sound sensor 14, which is used to detect the sound of the falling hammer.

[0023] Working principle: The device is fixed to the vibratory source vehicle body through the mounting holes 3 of the mounting plate 2 and bolts or other fasteners to ensure the overall installation is stable; the clamping assembly is in the open state, the drop hammer can fall freely to complete the excitation action, and the sound sensor 14 is always in the standby detection state. When the hammer falls and generates seismic wave signals, it will be accompanied by impact sound. The sound sensor 14 inside the protective box 5 collects the sound signal of this primary excitation in real time. The sound sensor 14 will collect the sound signal of one excitation and transmit it to the controller on the vibrating source vehicle. The controller presets a sound threshold. When the detected sound signal is within the preset threshold, the controller determines that the hammer has completed one excitation and then sends a clamping command to the electric push rod 4. After receiving the clamping command, the electric push rod 4 starts and its output end pushes the moving block 12 to slide smoothly along the guide rail of the bottom fixed plate 6. The moving block 12 drives the two sets of symmetrical jaws 8 to close through the hinge block 11, thereby clamping the drop hammer. The anti-slip block 9 on the inner side of the jaw 8 increases the friction with the drop hammer to prevent the clamp from loosening, thereby blocking the secondary excitation of the drop hammer and preventing signal interference. This ensures the accuracy and reliability of exploration data acquisition and also greatly reduces the workload and difficulty of subsequent signal processing.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing secondary excitation of a falling hammer source, comprising an anti-secondary excitation body (1), characterized in that: The anti-secondary excitation body (1) includes a controller and a mounting plate (2). The mounting plate (2) has a mounting hole (3). The mounting plate (2) is fixedly installed on the vibration source vehicle. The mounting plate (2) is equipped with a clamping assembly for clamping the falling hammer, and the mounting plate (2) is equipped with a sound sensor (14) for detecting sound. The controller, clamping assembly, and sound sensor are electrically connected.

2. The device for preventing secondary excitation of a falling hammer vibration source according to claim 1, characterized in that: The clamping assembly includes an electric push rod (4), which is fixedly mounted on a mounting plate (2). A clamping seat (10) is fixedly connected to the side of the mounting plate (2) away from the electric push rod (4). The bottom of the clamping seat (10) is fixedly connected to a bottom fixing plate (6). A gripper (8) is hingedly mounted on the bottom fixing plate (6). A moving block (12) is fixedly connected to the output end of the electric push rod (4). The moving block (12) and the gripper (8) are connected through a hinge block (11).

3. The device for preventing secondary excitation of a falling hammer vibration source according to claim 2, characterized in that: The bottom fixing block (6) is provided with a guide rail, and the moving block (12) is slidably connected to the guide rail.

4. The drop hammer vibration source anti-secondary excitation device according to claim 2, characterized in that: The gripper (8) is equipped with an anti-slip block (9).

5. The device for preventing secondary excitation of a falling hammer vibration source according to claim 2, characterized in that: A pad (13) is fixedly connected to the bottom fixing plate (6), and a top fixing plate (10) is fixedly connected to the pad (13).

6. The device for preventing secondary excitation of a falling hammer vibration source according to claim 1, characterized in that: A protective box (5) is also fixedly connected to the mounting plate (2), and a sound sensor (14) is installed inside the protective box (5).

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