A geophone capable of improving the reception quality of echo signals

Abstract

The present invention provides a geophone capable of improving the reception quality of echo signals, which comprises a geophone main body and a geophone tail vertebra. The geophone tail vertebra mainly consists of a cylindrical outer shell, a round rod, a connecting slider, a connecting rod, a connecting disc, a branch rod, a main tail vertebra, a branch tail vertebra, a slider and a fixing rod. The connecting slider is installed inside the cylindrical outer shell; the round rod is connected with the connecting slider through a notch on the cylindrical outer shell; both ends of the connecting rod are respectively connected with the connecting slider and the connecting disc; the other end of the fixing rod welded at the center of the top of the main tail vertebra is welded at the bottom of the connecting disc; the bottom end of the branch rod is connected with the slider in the chute of the branch tail vertebra, and its top is welded at the bottom of the connecting disc; four branch tail vertebrae are arranged around the frustum of the main tail vertebra. The present invention improves the coupling effect between the geophone tail vertebra and the soil, enhances the reception quality of the echo signals by the geophone, and helps to improve the seismic inversion resolution.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic exploration, and particularly to a geophone that can improve the reception quality of echo signals. Background Art

[0002] A geophone is an electromechanical conversion device that converts seismic waves propagating to the ground into electrical signals, and it is a key component for field data acquisition in seismic exploration. However, during the use of most current geophones, due to the insufficient tight contact between the inserted tail cone part and the soil and poor coupling quality, the reception quality of echo signals by the geophone is reduced, resulting in low resolution of seismic inversion based on echo signals. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problem of low reception quality of echo signals caused by the loose contact between the geophone and the ground and poor coupling quality, and particularly provide a geophone that can improve the reception quality of echo signals.

[0004] The purpose of the present invention can be achieved by the following technical solutions: A geophone that can improve the reception quality of echo signals, including a geophone main body and a geophone tail cone. The geophone tail cone is composed of a connecting disc, a connecting rod, a round rod, a connecting slider, a cylindrical shell, a shell bottom plate, a branch tail cone, a slider, a branch rod, a main tail cone, a fixing rod, and a spring. Its characteristics are: The connecting slider is installed inside the cylindrical shell. One end of the spring is connected to the center of the upper surface of the connecting slider, and the other end is connected to the cylindrical shell and is always in a compressed state. The shell bottom plate is fixed to the bottom of the cylindrical shell. The end of the round rod is provided with a thread, and the side of the connecting slider is provided with a threaded hole that cooperates with the round rod. There is a through slot similar to a "コ" shape on the cylindrical shell. The round rod is connected to the threaded hole through its horizontal slot, so that the bottom of the connecting slider is 4 - 6 mm away from the upper surface of the shell bottom plate to ensure that the connecting slider can slide. Both ends of the connecting rod are provided with threads. One end is connected to the threaded hole penetrating through the center of the connecting slider, and the other end passes through the round hole penetrating through the center of the shell bottom plate and is connected to the threaded hole in the center of the connecting disc. The shape of the main tail cone is a combination of an inverted frustum and a cone. The other end of the fixing rod welded vertically at the center of the top of the main tail cone is welded to the bottom of the connecting disc. Two symmetric chutes are arranged inside the branch tail cone. Two branch rods are in a group, and their bottom ends are respectively connected to the sliders in the chutes, and the tops are kept vertical and welded to the bottom of the connecting disc to ensure that the branch rods can move in the vertical direction. Four branch tail cones are evenly arranged around the frustum of the main tail cone and form a cone with the conical part of the main tail cone, so as to ensure that the branch tail cones can close and open with the main tail cone as the center.

[0005] The present invention has the following beneficial effects: when the round rod is in the upper horizontal slot, the branch tail vertebrae are closed; when the tail cone of the seismic detector is inserted into the soil, the round rod is inserted into the vertical slot and the round rod is pushed downward to drive the connecting disc and the branch rod to move in the vertical direction, and the branch rod drives the slider to move in the slide groove, so that the branch tail vertebrae are opened to the surroundings, and then the round rod is inserted into the lower inclined slot to lock the tail vertebra of the seismic detector, and the spring is in a compressed state, continuously providing a downward thrust to the tail vertebra of the seismic detector, so that the tail vertebra of the seismic detector is more closely contacted with the soil, thereby improving the coupling effect between the tail cone of the seismic detector and the soil, and improving the reception quality of the echo signal by the seismic detector, thereby helping to improve the resolution of seismic inversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 The present invention is a structural schematic diagram of a seismic detector capable of improving the receiving quality of echo signals.

[0007] Figure 2 It is a partial cross-sectional view of a seismic detector of the present invention which can improve the receiving quality of echo signals.

[0008] Figure 3 It is a schematic diagram of the structure of the branched coccygeal vertebrae.

[0009] In the figure: 1. connecting disc, 2. connecting rod, 3. round rod, 4. connecting slider, 5. cylindrical shell, 6. shell bottom plate, 7. seismic detector body, 8. branch tail vertebra, 9. slider, 10. branch rod, 11. main tail vertebra, 12. fixed rod, 13. spring, 14. seismic detector tail vertebra. DETAILED DESCRIPTION

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] like Figure 1 , Figure 2 , Figure 3As shown in the figure, a geophone capable of improving the reception quality of echo signals according to the present invention includes a geophone main body 7 and a geophone tail vertebra 14. The geophone tail vertebra 14 is composed of a connecting disc 1, a connecting rod 2, a round rod 3, a connecting slider 4, a cylindrical shell 5, a shell bottom plate 6, a branch tail vertebra 8, a slider 9, a branch rod 10, a main tail vertebra 11, a fixing rod 12, and a spring 13. The connecting slider 4 is installed inside the cylindrical shell 5. One end of the spring 13 is connected to the center of the upper surface of the connecting slider 4, and the other end is connected to the cylindrical shell 5 and is always in a compressed state. The shell bottom plate 6 is fixed to the bottom of the cylindrical shell 5. The end of the round rod 3 is provided with a thread, and the side surface of the connecting slider 4 is provided with a threaded hole matching the round rod 3. There is a through notch similar to a "コ" shape on the cylindrical shell 5. The round rod 3 is connected through its upper horizontal notch and the threaded hole, so that the bottom of the connecting slider 4 is 4-6 mm away from the upper surface of the shell bottom plate 6 to ensure that the connecting slider can slide. Both ends of the connecting rod 2 are provided with threads. One end is connected to the threaded hole penetrating the center of the connecting slider 4, and the other end passes through the round hole penetrating the center of the shell bottom plate 6 and is connected to the threaded hole in the center of the connecting disc 1. The shape of the main tail vertebra 11 is a combination of an inverted frustum and a cone. The other end of the fixing rod 12 welded vertically at the center of the top of the main tail vertebra 11 is welded to the bottom of the connecting disc 1. Two symmetrical chutes are provided inside the branch tail vertebra 8. Two branch rods 10 are in a group, and their bottom ends are respectively connected to the sliders 9 in the chutes, and the tops are kept vertical and welded to the bottom of the connecting disc 1 to ensure that the branch rods 10 can move in the vertical direction. Four branch tail vertebrae 8 are evenly arranged around the frustum of the main tail vertebra 11 and form a cone with the conical part of the main tail vertebra 11, so as to ensure that the branch tail vertebra 8 can close and open centered on the main tail vertebra 11.

Claims

1. A geophone capable of improving the reception quality of echo signals, comprising a geophone housing (7) and a geophone tail vertebra (14), wherein the geophone tail vertebra (14) is composed of a connecting disc (1), a connecting rod (2), a round rod (3), a connecting slider (4), a cylindrical outer shell (5), an outer shell bottom plate (6), a branch tail vertebra (8), a slider (9), a branch rod (10), a main tail vertebra (11), a fixing rod (12), and a spring (13), and is characterized in that: The connecting slider (4) is installed inside the cylindrical housing (5). One end of the spring (13) is connected to the center of the upper surface of the connecting slider (4), and the other end is connected to the cylindrical housing (5), and it is always in a compressed state. The housing bottom plate (6) is fixed to the bottom of the cylindrical housing (5). The tail end of the round rod (3) is provided with a thread, and the side surface of the connecting slider (4) is provided with a threaded hole that matches the round rod (3). There is a through notch similar to the shape of "コ" on the cylindrical housing (5). The round rod (3) is connected to the threaded hole through its upper horizontal notch, so that the bottom of the connecting slider (4) is 4 - 6 mm away from the upper surface of the housing bottom plate (6), ensuring that the connecting slider (4) can slide. Both ends of the connecting rod (2) are provided with threads. One end is connected to the threaded hole passing through the center of the connecting slider (4), and the other end passes through the round hole passing through the center of the housing bottom plate (6) and is connected to the threaded hole in the center of the connecting disc (1). The main tail vertebra (11) is shaped as a combination of an inverted frustum and a cone. The other end of the fixed rod (12) welded vertically at the center of the top of the main tail vertebra (11) is welded to the bottom of the connecting disc (1). Two symmetrical chutes are arranged inside the branch tail vertebra (8). Two branch rods (10) are in a group, and their bottom ends are respectively connected to the sliders (9) inside the chutes, and the tops are kept vertical and welded to the bottom of the connecting disc (1), ensuring that the branch rods (10) can move in the vertical direction. Four branch tail vertebrae (8) are evenly arranged around the frustum of the main tail vertebra (11) and form a cone with the conical part of the main tail vertebra (11), so as to ensure that the branch tail vertebra (8) can close and open with the main tail vertebra (11) as the center.

2. The geophone capable of improving the reception quality of echo signals according to claim 1, wherein: One end of the spring (13) is connected to the center of the upper surface of the connecting slider (4), and the other end is connected to the cylindrical housing (5), and it is always in a compressed state, continuously providing a downward thrust to the tail vertebra.

3. The geophone capable of improving the reception quality of echo signals according to claim 1, characterized in that: The main tail vertebra (11) is shaped as a combination of an inverted frustum and a cone; two symmetrical chutes are arranged inside the branch tail vertebra (8). Two branch rods (10) are in a group, and their bottom ends are respectively connected to the sliders (9) inside the chutes, and the tops are kept vertical and welded to the bottom of the connecting disc (1), ensuring that the branch rods (10) can move in the vertical direction. Four branch tail vertebrae (8) are evenly arranged around the frustum of the main tail vertebra (11) and form a cone with the conical part of the main tail vertebra (11), so as to ensure that the branch tail vertebra (8) can close and open with the main tail vertebra (11) as the center.

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