Seismic source continuous excitation device for seismic wave detection

Abstract

The utility model discloses a seismic source continuous excitation device for seismic wave detection, which comprises a mounting rack and a lifting mechanism, the lifting mechanism is arranged at the bottom of the mounting rack, and the rear side of the mounting rack is fixedly provided with a driving motor through a support. According to the seismic source continuous excitation device for seismic wave detection, the expansion rod matched with the pull rope for use is arranged in the mounting frame, so that the heavy hammers can press down and jack up the pull rope through the expansion rod, the two heavy hammers are promoted to sequentially complete alternate falling down, and continuous seismic wave excitation is formed; and secondly, a retraction mechanism is arranged between the limiting shaft and the mounting frame, so that the limiting shaft can conveniently and quickly separate the expansion rod from the pull rope through the retraction mechanism, the expansion rod can be conveniently and quickly separated after the extrusion pressure of the expansion rod on the pull rope is maximum, and the heavy hammer can quickly fall.

Description

Technical Field

[0001] The utility model relates to the technical field of seismic wave detection, in particular to a source continuous excitation device for seismic wave detection. Background Art

[0002] Artificial seismic exploration is a commonly used geophysical exploration method. It uses artificial methods to create "seismic waves" in the field. Then, through the arrangement of exploration methods, detectors are set up at the receiving points to receive the seismic waves reflected back from the underground rock formations, thereby observing the underground rock structure and structure. The device that artificially excites seismic waves is called an artificial source, which includes various forms such as electric spark sources, heavy hammer sources and air gun sources. The heavy hammer is a heavy object that is lifted high and accelerated to the ground to impact the ground, forming an impact source. In field operations, a traditional rammer is used as a heavy hammer. Multiple people lift the rammer and then let it fall freely to form artificially excited seismic waves. This method is relatively time-consuming and labor-intensive.

[0003] In order to avoid the above problems, a continuous source excitation device for seismic wave detection is proposed to solve the existing problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a source continuous excitation device for seismic wave detection, which solves the problem that manual operation of a heavy hammer to excite seismic waves is time-consuming and labor-intensive.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a source continuous excitation device for seismic wave detection, comprising a mounting frame and a lifting mechanism, the lifting mechanism is arranged at the bottom of the mounting frame, the rear side of the mounting frame is fixedly provided with a driving motor through a bracket, the output shaft of the driving motor is fixedly connected to a limiting sleeve through a coupling, and one end of the limiting sleeve extends to the interior of the mounting frame, the interior of the limiting sleeve is slidably connected to the limiting shaft, a return spring is fixedly connected between the limiting shaft and the limiting sleeve, the front side of the limiting shaft is fixedly connected to an expansion rod through a bracket, a retraction mechanism used in conjunction with the limiting shaft is provided on the rear side of the inner cavity of the mounting frame, traction rings are fixedly connected on both sides of the top and bottom of the rear side of the inner cavity of the mounting frame, a pull rope is interspersed between two adjacent traction rings, and one end of the pull rope is fixedly connected to the rear side of the inner cavity of the mounting frame through the bracket, and the other end of the pull rope is fixedly connected to a heavy hammer.

[0006] Preferably, the retraction mechanism includes a ring plate, which is fixed to the rear side of the inner cavity of the mounting frame through a bracket, and an arc-shaped protrusion is fixedly provided on the rear side of the ring plate, and two arc-shaped protrusions are equidistantly provided around it, and one side of the limiting shaft is fixedly connected to a ball support rod used in conjunction with the ring plate and the arc-shaped protrusion.

[0007] Preferably, both sides of the bottom of the mounting frame are fixedly connected with a slide plate, the interior of the slide plate is slidably connected with a slide plate, and one side adjacent to the slide plate is fixedly connected to the side of the heavy hammer.

[0008] Preferably, the lifting mechanism includes an electric telescopic rod, and four electric telescopic rods are provided. The four electric telescopic rods are fixedly arranged on both sides of the bottom of the mounting frame through brackets, and pulleys are installed at the bottom of the extended ends of the electric telescopic rods.

[0009] Preferably, a roller sleeve is rotatably provided on the surface of the expansion rod.

[0010] Preferably, a push rod is fixedly connected to the rear side of the mounting frame.

[0011] Beneficial effects

[0012] The present invention provides a continuous source excitation device for seismic wave detection. Compared with existing technologies, the present invention has the following advantages: an expansion rod is provided inside a mounting frame for use with a pull rope, so that the weights can press down and lift the pull rope by the expansion rod, causing the two weights to fall alternately in sequence, forming continuous seismic wave excitation. Secondly, a retraction mechanism is provided between the limit shaft and the mounting frame, so that the limit shaft can use the retraction mechanism to facilitate the rapid separation of the expansion rod from the pull rope. After the expansion rod reaches the maximum pressure on the pull rope, it can be quickly separated, allowing the weights to fall quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0014] Figure 2 This is a rear view of the mounting frame structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the retraction mechanism structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the limiting sleeve of the utility model.

[0017] In the figure: 1. Mounting frame; 2. Lifting mechanism; 21. Electric telescopic rod; 22. Pulley; 3. Driving motor; 4. Limit sleeve; 5. Limit shaft; 6. Return spring; 7. Expansion rod; 8. Retraction mechanism; 81. Ring plate; 82. Arc-shaped protrusion; 83. Ball support rod; 9. Traction ring; 10. Pull rope; 11. Heavy hammer; 12. Slide plate; 13. Slide plate; 14. Roller sleeve; 15. Push rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1-4 The utility model provides a technical solution: a continuous source excitation device for seismic wave detection, including a mounting frame 1 and a lifting mechanism 2, the lifting mechanism 2 is arranged at the bottom of the mounting frame 1, the lifting mechanism 2 includes an electric telescopic rod 21, four electric telescopic rods 21 are provided, and the four electric telescopic rods 21 are respectively fixed on both sides of the bottom of the mounting frame 1 through brackets, a pulley 22 is installed at the bottom of the extended end of the electric telescopic rod 21, and a push rod 15 is fixedly connected to the rear side of the mounting frame 1.

[0020] Furthermore: in order to facilitate the continuous and rapid excitation of the heavy hammer 11 to fall, a drive motor 3 is fixedly provided on the rear side of the mounting frame 1 through a bracket, and the output shaft of the drive motor 3 is fixedly connected to the limiting sleeve 4 through a coupling, and one end of the limiting sleeve 4 extends to the interior of the mounting frame 1, and the internal sliding connection of the limiting sleeve 4 is connected to the limiting shaft 5, and a return spring 6 is fixedly connected between the limiting shaft 5 and the limiting sleeve 4, and the front side of the limiting shaft 5 is fixedly connected to the expansion rod 7 through the bracket, and a retraction mechanism 8 used in conjunction with the limiting shaft 5 is provided on the rear side of the inner cavity of the mounting frame 1, and both sides of the top and bottom of the rear side of the inner cavity of the mounting frame 1 are fixedly connected with traction rings 9, and there is a gap between the two adjacent traction rings 9. A pull rope 10 is inserted through it, and one end of the pull rope 10 is fixedly connected to the rear side of the inner cavity of the mounting frame 1 through a bracket, and the other end of the pull rope 10 is fixedly connected to a heavy hammer 11. Both sides of the bottom of the mounting frame 1 are fixedly connected with a slide plate 12, and the inside of the slide plate 12 is slidably connected with a slide plate 13. One side of the adjacent slide plate 13 is fixedly connected to the side of the heavy hammer 11. The retraction mechanism 8 includes a ring plate 81, which is fixedly arranged on the rear side of the inner cavity of the mounting frame 1 through a bracket. An arc-shaped protrusion 82 is fixedly arranged on the rear side of the ring plate 81, and two arc-shaped protrusions 82 are equidistantly arranged around it. One side of the limit shaft 5 is fixedly connected with a ball support rod 83 used in conjunction with the ring plate 81 and the arc-shaped protrusion 82.

[0021] In order to reduce the friction resistance between the expansion rod 7 and the pull rope 10, a roller sleeve 14 is rotatably provided on the surface of the expansion rod 7.

[0022] When in use, the electric telescopic rod 21 is started, causing the extended end of the electric telescopic rod 21 to retract so that the heavy hammer 11 contacts the ground, and then the driving motor 3 is started. The output shaft of the driving motor 3 drives the limiting sleeve 4 to rotate. The limiting sleeve 4 rotates and drives the limiting shaft 5 and the expansion rod 7 to rotate. The rotation of the expansion rod 7 will press down and lift the two pull ropes 10 respectively, causing the pull rope 10 to drive the heavy hammer 11 to rise. When the limiting shaft 5 drives the expansion rod 7 to rotate and apply pressure to the pull rope 10, the limiting shaft 5 synchronously drives the ball support rod 83 to rotate. When the expansion rod 7 rotates to the uppermost and lowermost parts, the corresponding ball support rod 83 begins to be squeezed and contacted with the arc-shaped protrusion 82, causing the ball support rod 83 to be squeezed by the protrusion of the arc-shaped protrusion 82, and drives the limiting shaft 5 and the expansion rod 7 to move backward. The backward movement of the expansion rod 7 will immediately disengage from the currently squeezed pull rope 10. After the pull rope 10 loses force, the weight 11 drops to the ground by gravity and drives the pull rope 10 to straighten, forming an earthquake wave.

Claims

1. A source continuous excitation device for seismic wave detection, comprising a mounting frame (1) and a lifting mechanism (2), wherein the lifting mechanism (2) is arranged at the bottom of the mounting frame (1), and is characterized in that: A driving motor (3) is fixedly provided on the rear side of the mounting frame (1) through a bracket, and the output shaft of the driving motor (3) is fixedly connected to a limiting sleeve (4) through a coupling, and one end of the limiting sleeve (4) extends to the interior of the mounting frame (1), and the limiting sleeve (4) is internally slidably connected to a limiting shaft (5), and a reset spring (6) is fixedly connected between the limiting shaft (5) and the limiting sleeve (4), and the front side of the limiting shaft (5) is fixedly connected to an expansion rod (7) through a bracket, and a retraction mechanism (8) used in conjunction with the limiting shaft (5) is provided on the rear side of the inner cavity of the mounting frame (1), and traction rings (9) are fixedly connected on both sides of the top and bottom of the rear side of the inner cavity of the mounting frame (1), and a pull rope (10) is inserted between two adjacent traction rings (9), and one end of the pull rope (10) is fixedly connected to the rear side of the inner cavity of the mounting frame (1) through the bracket, and the other end of the pull rope (10) is fixedly connected to a heavy hammer (11).

2. The device for continuous excitation of a source for seismic wave detection according to claim 1, characterized in that: The retracting mechanism (8) comprises a ring plate (81), the ring plate (81) being fixedly arranged on the rear side of the inner cavity of the mounting frame (1) via a bracket, an arc-shaped protrusion (82) being fixedly arranged on the rear side of the ring plate (81), and two arc-shaped protrusions (82) being arranged equidistantly around the ring plate (81), and a ball support rod (83) matched with the ring plate (81) and the arc-shaped protrusion (82) being fixedly connected to one side of the limiting shaft (5).

3. The device for continuous excitation of a source for seismic wave detection according to claim 1, characterized in that: Both sides of the bottom of the mounting frame (1) are fixedly connected with a slide plate (12), the interior of the slide plate (12) is slidably connected with a slide plate (13), and one side adjacent to the slide plate (13) is fixedly connected to the side of the heavy hammer (11).

4. The device for continuous source excitation for seismic wave detection according to claim 1, characterized in that: The lifting mechanism (2) comprises an electric telescopic rod (21), four of which are provided, and the four electric telescopic rods (21) are fixedly provided on both sides of the bottom of the mounting frame (1) through brackets, and a pulley (22) is installed at the bottom of the extended end of the electric telescopic rod (21).

5. The device for continuous excitation of a source for seismic wave detection according to claim 1, characterized in that: A rolling sleeve (14) is rotatably provided on the surface of the expansion rod (7).

6. The device for continuous source excitation for seismic wave detection according to claim 1, characterized in that: A push rod (15) is fixedly connected to the rear side of the mounting frame (1).

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