Seismic source mechanism for seismic exploration

Abstract

The utility model belongs to the technical field of seismic exploration equipment, and provides a seismic source mechanism for seismic exploration, which comprises a bottom plate, and four corners of the bottom plate are provided with mounting holes penetrating along the vertical direction; the supporting legs are arranged in the four mounting holes in a sliding and penetrating mode, universal wheels are installed at the bottom ends of the supporting legs, and limiting holes are formed in the outer surfaces of the supporting legs; the two ends of the sleeve are each in threaded connection with one limiting rod; the limiting mechanism is installed on the bottom plate, the limiting rod is arranged on the limiting mechanism in a penetrating mode, and the limiting mechanism is used for limiting circumferential rotation of the limiting rod; the sleeve rotates to drive the two limiting rods to stretch into or retract out of the two oppositely-arranged limiting holes at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of seismic exploration equipment technology, and in particular relates to a seismic source mechanism for seismic exploration. Background Technology

[0002] Seismic exploration is a geophysical exploration method that utilizes the propagation characteristics of seismic waves in the subsurface medium to detect the features of subsurface geological bodies. In practical applications, to better understand and evaluate the performance of different seismic sources and optimize seismic exploration schemes, specialized source mechanisms or computer models are used to generate non-explosive seismic sources and conduct simulation studies (artificial sources).

[0003] In order to facilitate the transportation or carrying of the seismic source, the support leg structure of the existing small, portable or pushable non-explosive seismic source mechanism (artificial seismic source) is mostly designed to be foldable to reduce the size of the seismic source mechanism.

[0004] Existing patent CN221881055U discloses a seismic source mechanism for 3D seismic exploration. In this patent's technical solution, when using the seismic source mechanism, the rotating block is rotated within the connecting block by manually twisting the positioning bolts. This facilitates adjustment of the angle between the movable support leg and the lower base plate until a right angle is formed between them. The angle between the movable support leg and the lower base plate is then fixed by twisting the positioning screw. By manually placing the seismic source mechanism on a horizontal surface and manually pulling the two lifting handles, the mechanism can be moved on the horizontal surface using the movable support leg and casters.

[0005] The technical solution involves loosening the positioning bolts to release the restriction on the outriggers, but this requires locking or unlocking multiple outriggers one by one, which is inconvenient and inefficient during use or storage. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a seismic source mechanism for earthquake exploration, in which multiple legs can be simultaneously and quickly deployed or retracted, thereby improving work efficiency.

[0007] To achieve this objective, the present invention adopts the following technical solution: a seismic source mechanism for seismic exploration, comprising:

[0008] The base plate has vertically penetrating mounting holes at each of its four corners.

[0009] The support leg is slidably inserted into each of the four mounting holes, and a caster wheel is installed at the bottom of the support leg. A limit hole is formed on the outer surface of the support leg.

[0010] A limiting rod and a sleeve, wherein both ends of the sleeve are threadedly connected to a limiting rod;

[0011] A limiting mechanism is installed on the base plate, and a limiting rod passes through the limiting mechanism. The limiting mechanism is used to restrict the circumferential rotation of the limiting rod.

[0012] The rotation of the sleeve can cause the two limiting rods to simultaneously extend into or retract from the two oppositely arranged limiting holes.

[0013] Preferably, the support leg is provided with a guide block along its axial direction, and the inner wall of the mounting hole is provided with a guide groove that slides with the guide block.

[0014] Preferably, a damping ring is installed on the inner wall of the mounting hole, the outrigger is inserted into the damping ring, a receiving groove is formed on the inner wall of the damping ring, and the guide block is simultaneously disposed in the guide groove and the receiving groove.

[0015] Preferably, the seismic source mechanism for seismic exploration further includes an upper mounting plate, which is arranged parallel to the base plate directly above it and the two are spaced apart by a preset distance.

[0016] A guide rod is provided on the lower surface of the upper mounting plate, and the support leg is slidably sleeved on the guide rod.

[0017] Preferably, the outer periphery of the support leg is provided with a limiting portion, which is used to limit the maximum distance by which the support leg extends out of the base plate along its axial direction.

[0018] Preferably, there are at least two limiting holes, which are arranged in a linear array along the axial direction of the leg.

[0019] Preferably, a bushing is fixedly connected to the base plate, and an annular groove is formed on the bushing;

[0020] The outer circumferential surface of the sleeve is integrally formed with a convex ring, which is rotatably disposed within the annular groove.

[0021] Preferably, the bushings are in two sets, and the two sets of bushings are spaced apart along the axial direction of the sleeve.

[0022] Preferably, the limiting mechanism includes a vertical rod, which is fixedly connected to the base plate. The vertical rod has a through hole along the axial direction of the limiting rod, and a limiting block is provided on the inner wall of the through hole.

[0023] A limiting groove is formed on the outer wall of the limiting rod along its axial direction. The limiting rod passes through the through hole, and the limiting block slides in the limiting groove.

[0024] Preferably, a handle assembly is mounted on the upper mounting plate, the handle assembly being configured to move the seismic source mechanism for seismic exploration.

[0025] Compared with the prior art, this utility model has the following beneficial effects: In this embodiment of the utility model, the seismic source mechanism for seismic exploration adjusts the axial extension and retraction of the limiting rod by rotating the sleeve, thereby extending into or retracting from the limiting hole. When the seismic source mechanism for seismic exploration is needed, the distance between the caster wheel and the base plate needs to be adjusted. At this time, the outrigger moves downward along the mounting hole, increasing the distance between the caster wheel and the base plate. After adjusting the relative position between the caster wheel and the base plate, rotating the sleeve drives the limiting rod to move axially until it extends into the limiting hole, thereby quickly fixing the position of the outrigger. When the seismic source structure is not used, rotating the sleeve in the opposite direction drives the limiting rod to retract out of the limiting hole, and the outrigger moves upward along the mounting hole, quickly retracting the outrigger and improving work efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the source mechanism of this utility model used for seismic exploration;

[0027] Figure 2 This is a schematic diagram showing the installation position of the damping ring in the seismic source mechanism for seismic exploration according to this utility model;

[0028] Figure 3 This is an exploded view of the fastening bushing and the supporting bushing of the seismic source mechanism for seismic exploration according to this utility model.

[0029] Figure 4 For the present utility model Figure 1 A magnified view of point A.

[0030] The components are as follows: 1. Base plate; 2. Mounting hole; 3. Support leg; 4. Caster wheel; 5. Limiting hole; 6. Limiting rod; 7. Sleeve; 8. Limiting mechanism; 81. Vertical rod; 82. Through hole; 83. Limiting groove; 84. Limiting block; 9. Guide block; 10. Guide groove; 11. Limiting part; 12. Guide rod; 13. Support bushing; 14. Ring groove; 15. Protruding ring; 16. Snap-fit ​​bushing; 17. Damping ring; 18. Upper mounting plate; 19. Vibration source mechanism body; 20. Mounting cylinder; 21. Handle. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] like Figures 1-4 As shown, this utility model provides a seismic source mechanism for seismic exploration, including a base plate 1, support legs 3, limiting rods 6, and a sleeve 7. The base plate 1 has vertically penetrating mounting holes 2 at each of its four corners. Support legs 3 slide through each of the four mounting holes 2, and casters 4 are mounted on the bottom of each support leg 3 for moving the seismic source mechanism. Limiting holes 5 are formed on the outer surface of each support leg 3. A limiting rod 6 is threaded to both ends of the sleeve 7. A limiting mechanism 8 is mounted on the base plate 1, and the limiting rods 6 pass through the limiting mechanism 8, which restricts the circumferential rotation of the limiting rods 6. Rotation of the sleeve 7 can cause the two limiting rods 6 to simultaneously extend into or retract from the two oppositely positioned limiting holes 5.

[0039] In this embodiment, the seismic source mechanism for seismic exploration adjusts the axial movement of the limiting rod 6 by rotating the sleeve 7, thereby extending into or retracting from the limiting hole 5. When the seismic source mechanism is needed for seismic exploration, the distance between the caster wheel 4 and the base plate 1 needs to be adjusted. At this time, the support leg 3 moves downward along the mounting hole 2, increasing the distance between the caster wheel 4 and the base plate 1. After adjusting the relative position between the caster wheel 4 and the base plate, rotating the sleeve 7 drives the limiting rod 6 to move axially until it extends into the limiting hole 5, thereby quickly fixing the position of the support leg 3. When the seismic source structure is not in use, rotating the sleeve 7 in the opposite direction drives the limiting rod 6 to retract out of the limiting hole, and the support leg 3 moves upward along the mounting hole 2, quickly retracting the support leg 3 and improving work efficiency.

[0040] Preferably, the support leg 3 is provided with a guide block 9 along its axial direction, and a guide groove 10 that slides with the guide block 9 is provided on the inner wall of the mounting hole 2 to ensure that the support leg 3 does not rotate circumferentially when it moves along its axial direction, so that the support leg 3 only moves along its axial direction, and the limiting hole 5 moves up and down along the axial direction of the support leg 3 to ensure that after the support leg 3 moves along the mounting hole 2, the limiting rod 6 can still be inserted into the limiting hole 5.

[0041] Preferably, a damping ring 17 is installed on the inner wall of the mounting hole 2, and the support leg 3 is inserted into the damping ring 17. A receiving groove is formed on the inner wall of the damping ring 17, and the guide block 9 is simultaneously disposed in the guide groove 10 and the receiving groove. The damping ring 17 is used to increase the friction between itself and the support leg, so that the support leg 3 can slide slowly along its axial direction under the action of gravity, so that the limiting rod 6 can be inserted into the corresponding limiting holes 5, controlling the length of the support leg 3 extending downward along the axial direction. In this embodiment, the receiving groove and the guide block 9 slide together. Both the receiving groove and the guide groove 10 in the mounting hole 2 slide together with the guide block 9, and the receiving groove and the guide groove 10 simultaneously restrict the axial rotation of the guide block 9.

[0042] In other embodiments, the receiving groove and the guide block 9 do not contact each other; the receiving groove avoids the guide block 9; the guide block 9 slides in conjunction with the aforementioned guide groove 10; and the guide groove 10 restricts the axial rotation of the guide block 9. Preferably, the seismic source mechanism for seismic exploration further includes an upper mounting plate 18, which is arranged parallel to the base plate 1 directly above it and spaced a predetermined distance apart. A guide rod 12 is provided on the lower surface of the upper mounting plate 18, and the support leg 3 is sleeved on the guide rod 12.

[0043] Specifically, the upper mounting plate 18 and the base plate 1 are connected by multiple connecting columns, forming a frame structure. The seismic source mechanism body 19 is fixed to this frame structure with bolts. The seismic source mechanism body 19 can be a lightweight impact seismic source from the Percussion series of Guokan Digital Earth, which features a lightweight design suitable for various mission scenarios such as mountains, cities, and mines. A buffer and shock absorption mechanism (not shown in the figure) consisting of springs and dampers is installed between the seismic source mechanism body 19 and the base plate 1 to reduce the impact forces generated by collisions during transportation or movement of the seismic source mechanism body 19. It adopts a two-wheel or four-wheel structure, is easy to operate, and is suitable for single-person handling and construction. The specific structure and working principle of the seismic source mechanism body 19 are existing technologies and will not be described in detail here.

[0044] When the outrigger 3 reciprocates along its axial direction, its upper end is guided by the guide rod 12, and its lower end is guided by the guide block 9 and guide groove 10 provided in the mounting hole 2, thus achieving a dual guiding effect and further ensuring the stability of the outrigger 3 moving along its axial direction.

[0045] In addition, by setting a guide rod 12, which extends into the support leg 3, the guide rod 12 and the support leg 3 together with the above-mentioned frame structure form a protective structure for the seismic source mechanism body 19, so as to protect the corners of the seismic source mechanism body 19.

[0046] When the support leg 3 moves toward the upper mounting plate 18 along its axial direction, if the dimension of the support leg 3 along its axial direction is less than the vertical distance between the upper mounting plate 18 and the base plate 1, the dimension of the support leg 3 along its axial direction determines the stroke of the support leg 3. Alternatively, if the dimension of the support leg 3 along its axial direction is greater than the vertical distance between the upper mounting plate 18 and the base plate 1, the upper limit position of the support leg 3 is limited by the lower surface of the upper mounting plate 18.

[0047] Preferably, a limiting part 11 is provided on the outer periphery of the support leg 3, and the limiting part 11 is used to limit the maximum downward movement stroke of the support leg 3.

[0048] Specifically, the limiting part 11 is provided at the top of the support leg 3, and the limiting part 11 is an annular boss provided on the outer side wall of the support leg 3. The lower surface of the annular boss contacts the surface of the base plate 1 to limit the movement limit position of the support leg 3.

[0049] like Figure 3 As shown, preferably, a bushing is fixedly connected to the base plate 1, and an annular groove 14 is provided on the bushing. A raised ring 15 is integrally formed on the outer peripheral surface of the sleeve 7, and the raised ring 15 is rotatably disposed in the annular groove 14.

[0050] The axial movement of the sleeve 7 is restricted by the engagement of the annular groove 14 on the bushing and the convex ring 15.

[0051] Preferably, the bushing includes a supporting bushing 13 and a fastening bushing 16 that engages with the supporting bushing 13. The supporting bushing 13 is fixedly installed on the base plate 1, and the annular groove 14 is formed on the inner wall of the supporting bushing 13 and the fastening bushing 16.

[0052] Preferably, both the support bushing 13 and the fastening bushing 16 are provided with semi-circular mounting grooves for mounting the support sleeve 7.

[0053] Preferably, there are two sets of bushings, and the two sets of bushings are spaced apart by a preset distance along the axial direction of the sleeve 7 to ensure uniform support of the sleeve 7.

[0054] like Figure 4 As shown, regarding the specific structure of the limiting mechanism 8, preferably, the limiting mechanism 8 includes a vertical rod 81 and a limiting block. The vertical rod 81 is fixedly connected to the base plate 1. A through hole 82 along the axial direction of the limiting rod 6 is provided on the vertical rod 81, and a limiting block 84 is provided on the inner wall of the through hole 82.

[0055] A limiting groove 83 is formed on the outer wall of the limiting rod 6 along its axial direction. The limiting rod 6 passes through the through hole 82, and the limiting block 84 slides in the limiting groove 83.

[0056] When the sleeve 7 is rotated, since the sleeve 7 is threadedly connected to the limiting rod 6, and the limiting rod 6 is restricted from circumferential rotation by the cooperation of the limiting groove 83 and the limiting block 84, the sleeve 7 can simultaneously drive the two limiting rods 6 to extend into the limiting hole 5, restricting the axial movement of the support leg 3. When the sleeve 7 rotates counterclockwise, the two limiting rods 6 retract out of the limiting hole 5 under the drive of the sleeve 7, releasing the restriction on the support leg 3. At this time, the support leg 3 can be adjusted along its axial direction.

[0057] Specifically, the aforementioned limiting block 84 and through hole 82 are integrally formed.

[0058] Preferably, the dimension of the limiting groove 83 along the axial direction of the limiting rod 6 is not less than the travel distance of the limiting rod 6 along its axial direction.

[0059] Preferably, a handle assembly is mounted on the upper mounting plate 18, the handle assembly being configured to move the source mechanism used for seismic exploration.

[0060] The handle assembly includes an upper mounting plate 18 with a mounting cylinder 20 and a handle 21 mounted on the outside. The handle 21 is installed inside the mounting cylinder 20, and the vibration source mechanism can be moved by the handle 21.

[0061] Specifically, the two ends of the handle 21 are inserted into the mounting holes 20.

[0062] The seismic source mechanism used in this embodiment is applied when conducting seismic exploration in complex terrain such as the field. This type of ring-shaped terrain is often uneven, and the support legs 3 of different lengths allow the source mechanism to better conform to the ground. For example, when encountering small slopes or depressions, adjusting the length of the support legs 3 allows the various support points of the source mechanism to be stably placed on the ground at different heights, ensuring that the entire mechanism is in a horizontal or near-horizontal state. This helps improve the stability and accuracy of the seismic source excitation, resulting in better quality seismic wave signals.

[0063] Furthermore, different seismic exploration missions may have specific requirements for the excitation height of the seismic source. The height of the seismic source mechanism can be flexibly adjusted by changing the length of the support leg 3. For example, in some experiments that need to simulate the excitation effect of shallow seismic sources, it is necessary to appropriately lower the source height to more accurately reproduce the seismic wave propagation under the target geological conditions. However, in some large-scale seismic exploration projects, in order to better cover a specific area with the seismic waves generated by the source, it may be necessary to raise the source height to optimize the wave propagation path.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A source mechanism for seismic exploration, characterized in that, include: The base plate (1) has mounting holes (2) that extend vertically through each of its four corners; The support leg (3) is slidably inserted into each of the four mounting holes (2). The bottom end of the support leg (3) is equipped with a caster wheel (4). The outer surface of the support leg (3) is provided with a limit hole (5). The limiting rod (6) and the sleeve (7) are provided, and the two ends of the sleeve (7) are threadedly connected to the limiting rod (6); A limiting mechanism (8) is installed on the base plate (1), and the limiting rod (6) passes through the limiting mechanism (8). The limiting mechanism (8) is used to restrict the circumferential rotation of the limiting rod (6). The rotation of the sleeve (7) can drive the two limiting rods (6) to simultaneously extend into or retract from the two oppositely arranged limiting holes (5).

2. The seismic source mechanism for seismic exploration according to claim 1, characterized in that, The support leg (3) is provided with a guide block (9) along its axial direction, and the inner wall of the mounting hole (2) is provided with a guide groove (10) that slides with the guide block (9).

3. The seismic source mechanism for seismic exploration according to claim 2, characterized in that, A damping ring (17) is installed on the inner wall of the mounting hole (2), and the support leg (3) is inserted into the damping ring (17). A receiving groove is provided on the inner wall of the damping ring (17), and the guide block (9) is simultaneously provided in the guide groove (10) and the receiving groove.

4. The seismic source mechanism for seismic exploration according to any one of claims 1-3, characterized in that, The seismic source mechanism for seismic exploration also includes an upper mounting plate (18), which is arranged parallel to the base plate (1) directly above it and the two are spaced apart by a preset distance. The lower surface of the upper mounting plate (18) is provided with a guide rod (12), and the support leg (3) is slidably sleeved on the guide rod (12).

5. The seismic source mechanism for seismic exploration according to any one of claims 1-3, characterized in that, The outer periphery of the support leg (3) is provided with a limiting part (11), which is used to limit the maximum distance by which the support leg (3) extends out of the base plate (1) along its axial direction.

6. The seismic source mechanism for seismic exploration according to any one of claims 1-3, characterized in that, The limiting holes (5) are at least two, and the limiting holes (5) are arranged in a linear array along the axial direction of the support leg (3).

7. The seismic source mechanism for seismic exploration according to any one of claims 1-3, characterized in that, A bushing is fixedly connected to the base plate (1), and an annular groove (14) is provided on the bushing; The outer peripheral surface of the sleeve (7) is integrally formed with a convex ring (15), which is rotatably disposed in the annular groove (14).

8. The seismic source mechanism for seismic exploration according to claim 7, characterized in that, The bushings are in two sets, and the two sets of bushings are spaced apart along the axial direction of the sleeve (7).

9. The source mechanism for seismic exploration according to any one of claims 1-3, characterized in that, The limiting mechanism (8) includes a vertical rod (81) which is fixedly connected to the base plate (1). The vertical rod (81) has a through hole (82) along the axial direction of the limiting rod (6). A limiting block (84) is provided on the inner wall of the through hole (82). A limiting groove (83) is formed on the outer wall of the limiting rod (6) along its axial direction. The limiting rod (6) passes through the through hole (82), and the limiting block (84) slides in the limiting groove (83).

10. The seismic source mechanism for seismic exploration according to claim 4, characterized in that, A handle assembly is mounted on the upper mounting plate (18), the handle assembly being configured to move the seismic source mechanism for seismic exploration.

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