A seismometer downhole device for geophysical exploration

Abstract

The present invention discloses a seismometer downhole device for geophysical exploration, which specifically relates to the technical field of seismometers, and comprises a device base with a through hole in the middle, a plurality of support rods are fixed to the upper end of the device base, a mounting plate 1 is fixed to the upper ends of the plurality of support rods, a vertically arranged hydraulic rod is fixed to the lower end of the mounting plate, a vertically arranged transmission rack 1 is fixed to the upper end of the support frame, a friction rod 1 is rotatably mounted on the output end of the hydraulic rod, a friction rod 2 adapted to the friction rod 1 is rotatably mounted on the upper end of the device base through a mounting bracket 2, a connecting rod is also provided at the lower end of the friction rod 2, and a clamping assembly for clamping the connecting rod is also provided at the lower end of the device base. The seismometer downhole device for geophysical exploration described in the present invention adopts a design in which friction rod 3 cooperates with friction rod 2 to increase the applicability of the device when in use, and adopts a design in which friction rod 1 cooperates with the connecting rod to improve the working efficiency of the device.

Description

Technical Field

[0001] The invention relates to the technical field of seismometers, and in particular to a seismometer downhole device for geophysical prospecting. Background Art

[0002] A seismograph generally consists of two parts: a seismometer and a collector. A seismometer, also known as a seismic pickup or pendulum, is a device that converts ground movement into electrical signals. It is the main component of a seismograph that can record a certain physical constant of an earthquake. Before conducting geophysical exploration, the seismometer needs to be fixed in a well that has been drilled or drilled to facilitate accurate detection of underground conditions. Common installation methods mostly use cables for lifting and installation, which can easily cause the seismometer to deviate, and it is inconvenient to fix it after installation.

[0003] Chinese patent document CN213269869U discloses a seismometer for geophysical exploration, comprising a base, a support column fixedly connected to one side of the inner bottom wall of the base, a threaded rod movably connected to the inner bottom wall of the support column through an axle seat, a support plate threadedly connected to the surface of the threaded rod, a housing fixedly connected to the upper surface of the support plate, a motor arranged inside the housing, a gear fixedly connected to the output end of the motor, a gear engaged with one side of the gear, and a threaded head fixedly connected to the lower surface of the gear. The seismometer for geophysical exploration, through the arrangement of structures such as the base, the support column, the threaded rod, the support plate, the housing, the motor, the gear and the gear, the card seat is connected to the surface of the threaded head, the motor is started to drive the gear to rotate, and the gear drives the gear to move downward. When the length of the gear is not enough, multiple gears in the placement box can be spliced ​​together, thereby extending the installation distance of the device and improving the practicality of the device.

[0004] However, the device cannot be applied to gear rods of different sizes in actual use, and the applicability of the device is relatively low. In addition, the device is not convenient for connecting two gear rods to each other, resulting in relatively low working efficiency of the device. Summary of the invention

[0005] The main purpose of the present invention is to provide a seismometer downhole device for geophysical exploration, which can effectively solve the problems of relatively low applicability and relatively low working efficiency of the device.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A seismometer downhole device for geophysical exploration, comprising a device base with a through hole in the middle, support legs fixed to the four corners of the lower end of the device base, a plurality of support rods fixed to the upper end of the device base, a mounting plate 1 fixed to the upper ends of the plurality of support rods, a vertically arranged hydraulic rod fixed to the lower end of the mounting plate, a support frame fixed to the outer wall of the output end of the hydraulic rod, a vertically arranged transmission rack 1 fixed to the upper end of the support frame, a transmission gear 1 meshing with the transmission rack 1 rotatably mounted on the upper end of the device base through a mounting bracket 1, a friction rod 1 rotatably mounted on the output end of the hydraulic rod, a friction rod 2 matched with the friction rod 1 rotatably mounted on the upper end of the device base through a mounting bracket 2, a connecting rod is further provided at the lower end of the friction rod, and a clamping assembly for clamping the connecting rod is further provided at the lower end of the device base;

[0008] The clamping assembly includes a friction rod three and a mounting bracket three installed at the lower end of the device base, a mounting bracket four is fixed to one end of the mounting bracket three close to the device base, a transmission gear two is rotatably installed on one end of the mounting bracket four close to the device base, two transmission racks two meshing with the transmission gear two are symmetrically installed on one end of the mounting bracket four close to the device base, a clamping pliers for clamping the connecting rod is rotatably installed on one end of the mounting bracket four close to the device base, a torsion spring is also provided at the rotating connection of the clamping pliers, and the two transmission racks two are located between the handles of the clamping pliers;

[0009] The connecting rod includes an extension rod, a threaded hole is provided at the upper end of the extension rod, a screw rod meshing with the threaded hole is fixed to the lower end of the friction rod, a connecting rod matched with the threaded hole is fixed to the lower end of the extension rod, two limit rods are fixed to the outer surface of the connecting rod, a limit groove matched with the two limit rods is provided at the upper end of the extension rod, and two arc grooves matched with the limit rods are symmetrically provided on the bottom surface of the inner cavity of the threaded hole.

[0010] Preferably, the friction rod 2 is connected to the transmission gear 1 via a belt and a bevel gear set.

[0011] Preferably, the friction rod three is rotatably mounted on the lower end of the device base, and the friction rod three is meshed with the friction rod two.

[0012] Preferably, the friction rod three is connected to the transmission gear two via a universal flexible shaft.

[0013] Preferably, when the output end of the hydraulic rod extends, the two handles of the clamp move toward each other and the clamp clamps the connecting rod, and when the output end of the hydraulic rod contracts, the two handles of the clamp move away from each other.

[0014] Preferably, the limiting groove is communicated with the interior of the arc-shaped groove, and the limiting groove is located in the upper middle part of the arc-shaped groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention adopts a design in which the friction rod three and the friction rod two cooperate with each other, and utilizes the mutual friction between the friction rod three and the friction rod two so that after the clamping pliers clamp the connecting rod, the friction rod three and the friction rod two will slip, thereby enabling the clamping pliers to clamp connecting rods of different sizes, being suitable for connecting rods of different sizes, and increasing the applicability of the device when used.

[0017] The present invention adopts a design in which the friction rod 1 and the connecting rod cooperate with each other, and utilizes the mutual cooperation between the limit rod and the limit groove and the arc groove, so that the device can facilitate the mutual connection between the two connecting rods when in use. At the same time, the mutual cooperation between the threaded hole and the friction rod 1 and the screw rod is utilized to facilitate the mutual connection between the connecting rod and the hydraulic rod, so that when the device is in use, the operator does not need to connect the two connecting rods separately, which facilitates the operation of the device and improves the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 It is a partial structural schematic diagram of the device of the present invention;

[0021] Figure 4 For the present invention Figure 3 The enlarged view of point B in the middle;

[0022] Figure 5 It is a schematic structural diagram of the clamping assembly of the present invention;

[0023] Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle;

[0024] Figure 7 It is a structural schematic diagram of the connecting rod of the present invention;

[0025] Figure 8 It is a cross-sectional view of the connecting rod of the present invention.

[0026] In the figure: 1. device base; 2. clamping assembly; 3. connecting rod; 11. support rod; 12. mounting plate 1; 13. hydraulic rod; 14. support frame; 15. transmission rack 1; 16. transmission gear 1; 17. friction rod 1; 18. mounting bracket 2; 19. friction rod 2; 21. friction rod 3; 22. mounting bracket 3; 23. mounting bracket 4; 24. transmission gear 2; 25. transmission rack 2; 26. clamping pliers; 27. universal flexible shaft; 31. extension rod; 32. threaded hole; 33. screw; 34. connecting rod; 35. limit rod; 36. limit groove; 37. arc groove. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Embodiment 1

[0028] like Figure 1 - Figure 4 As shown, a seismometer downhole device for geophysical exploration includes a device base 1 with a through hole in the middle, and support legs are fixed at the four corners of the lower end of the device base 1, and the multiple support legs are used to facilitate the placement of the device. A plurality of support rods 11 are fixed to the upper end of the device base 1, and a mounting plate 12 is commonly fixed to the upper ends of the plurality of support rods 11, and a vertically arranged hydraulic rod 13 is fixed to the lower end of the mounting plate 12, and the mounting plate 12 is used for the installation of the hydraulic rod 13. At the same time, the through hole opened at the upper end of the device base 1 allows the output end of the hydraulic rod 13 to pass through the device base 1, and a support frame 14 is fixed to the outer wall of the output end of the hydraulic rod 13, and a vertically arranged transmission rack 15 is fixed to the upper end of the support frame 14, and the support frame 14 is used for the installation of the transmission rack 15. At the same time, due to the design of the fixed connection between the support frame 14 and the transmission rack 15, the transmission rack 15 can move downward or upward when the output end of the hydraulic rod 13 is extended or retracted.

[0029] In addition, a transmission gear 16 meshing with a transmission rack 15 is rotatably mounted on the upper end of the device base 1 through a mounting bracket 1. The transmission rack 15 meshes with the transmission gear 16 so that the transmission rack 15 can rotate when it moves upward or downward. At the same time, due to the design of the fixed connection between the hydraulic rod 13 and the transmission rack 15, the transmission gear 16 can be rotated when the output end of the hydraulic rod 13 is extended or retracted. A friction rod 17 is rotatably mounted on the output end of the hydraulic rod 13. The upper end of the device base 1 is rotated through the mounting bracket 2 18. A friction rod 2 19 matched with the friction rod 17 is installed. The friction rod 17 is meshed with the friction rod 2 19 so that the friction rod 2 19 can also drive the friction rod 17 to rotate when it rotates. A connecting rod 3 is also provided at the lower end of the friction rod 17. The friction rod 2 19 is connected to the transmission gear 16 through a belt and a bevel gear set. Due to the design that the transmission rack 15 and the transmission gear 16 are meshed with each other, the friction rod 2 19 can rotate when the output end of the hydraulic rod 13 is extended or retracted. A clamping assembly 2 for clamping the connecting rod 3 is also provided at the lower end of the device base 1.

[0030] like Figure 5 and Figure 6 As shown, the clamping assembly 2 includes a friction rod 3 21 and a mounting bracket 3 22 installed on the lower end of the device base 1. The friction rod 3 21 is rotatably installed on the lower end of the device base 1, and the friction rod 3 21 and the friction rod 2 19 are meshed with each other, so that the friction rod 2 19 can drive the friction rod 3 21 to rotate when it rotates, so that the friction rod 3 21 can rotate when the output end of the hydraulic rod 13 is extended or retracted. The mounting bracket 3 22 is fixed to the lower end of the device base 1, and a mounting bracket 4 23 is also fixed to the end of the mounting bracket 3 22 close to the device base 1. The mounting bracket 4 23 is used for the installation of the transmission gear 2 24, the transmission rack 25 and the clamp 26.

[0031] Specifically, a transmission gear 24 is rotatably installed on one end of the mounting bracket 4 23 close to the device base 1, and two transmission racks 25 meshing with the transmission gear 24 are symmetrically installed on the one end of the mounting bracket 4 23 close to the device base 1. The transmission gear 24 meshes with the two transmission racks 25, so that the two transmission racks 25 can move in opposite directions when the transmission gear 24 rotates. A clamping pliers 26 for clamping the connecting rod 3 is rotatably installed on one end of the mounting bracket 4 23 close to the device base 1. A torsion spring is also provided at the rotating connection of the clamping pliers 26, and the two transmission racks 25 are located between the handles of the clamping pliers 26, so that the two transmission racks 25 can be rotated in opposite directions. The two clamping pliers 26 can clamp the connecting rod 3, and because the rotating connection of the clamping pliers 26 is designed with a torsion spring, the two clamping blocks of the clamping pliers 26 will not clamp the connecting rod 3 when the two transmission racks 25 do not push the handle of the clamping pliers 26.

[0032] In addition, the friction rod three 21 and the transmission gear two 24 are connected by a universal flexible shaft 27, so that the friction rod three 21 can drive the transmission gear two 24 to rotate when it rotates, and further make the two transmission racks two 25 rotate in opposite directions. At the same time, through the mutual cooperation between the two transmission racks two 25 and the clamping pliers 26, the two handles of the clamping pliers 26 move toward the side closer to each other or move away from each other. At the same time, due to the design of mutual friction between the friction rod three 21 and the friction rod two 19, the friction rod three 21 and the friction rod two 19 will slip after the clamping pliers 26 clamps the connecting rod 3, so that the clamping pliers 26 can clamp connecting rods 3 of different sizes, which can increase the practicality of the device.

[0033] Furthermore, when the output end of the hydraulic rod 13 is extended, the friction rod three 21 cooperates with the friction rod one 17 to rotate the friction rod three 21, and then the friction rod three 21 rotates the transmission gear two 24 through the universal flexible shaft 27. The transmission gear two 24 engages with the two transmission racks two 25 to make the two handles of the clamping pliers 26 move toward each other. At the same time, due to the design of the torsion spring, the clamping pliers 26 clamps the connecting rod 3, further facilitating the connection of the two connecting rods 3. When the output end of the hydraulic rod 13 contracts, the two handles of the clamping pliers 26 move away from each other, so that the clamping pliers 26 does not clamp the connecting rod 3, which can prevent the output end of the hydraulic rod 13 from driving the connecting rod 3 when moving upward, and also facilitate the installation of the connecting rod 3.

[0034] The specific implementation of this embodiment is as follows: when the device is in use, the first connecting rod 3 is first installed at the lower end of the friction rod 17, and the seismometer is installed at the lower end of the connecting rod 3, and then the output end of the hydraulic rod 13 is controlled to extend, and when the output end of the hydraulic rod 13 is extended, the friction rod 2 19 can be transmitted downward, and the friction rod 2 19 and the seismometer are further inserted into the hole. At the same time, when the device selects the seismometer, the outer wall of the seismometer needs to fit tightly with the inner wall of the hole to prevent the seismometer from not fitting tightly with the ground during an earthquake, thereby affecting the detection effect of the seismometer;

[0035] When the output end of the hydraulic rod 13 extends out, the transmission rack 15 and the transmission gear 16 are meshed with each other, so that the transmission gear 16 can rotate. When the transmission gear 16 rotates, it is connected with the friction rod 2 19, so that the friction rod 2 19 can rotate. When the friction rod 2 19 rotates, it is meshed with the friction rod 17, so that the friction rod 17 can rotate. At the same time, since the connecting rod 3 is installed at the lower end of the friction rod 17, it is convenient for the two connecting rods 3 to be connected to each other.

[0036] Then, when the friction rod 2 19 rotates, the transmission gear 2 24 can also rotate, further enabling the clamp 26 to clamp the connecting rod 3 , making it easier for the two connecting rods 3 to be connected. Embodiment 2

[0037] This embodiment further improves the connecting rod 3 on the basis of the first embodiment, so that the device is convenient for connecting the connecting rod 3 when in use, and does not require an operator to connect the connecting rod 3 separately, thereby improving the working efficiency of the device.

[0038] like Figure 7 and Figure 8 As shown, the connecting rod 3 includes an extension rod 31, and a threaded hole 32 is formed at the upper end of the extension rod 31. Figure 5 As shown, a screw 33 meshing with the threaded hole 32 is also fixed to the lower end of the friction rod 17. The threaded hole 32 cooperates with the friction rod 17 to facilitate the installation of the connecting rod 3 under the friction rod 17. A connecting rod 34 adapted to the threaded hole 32 is fixed to the lower end of the extension rod 31. The connecting rod 34 cooperates with the threaded hole 32 to facilitate the mutual connection of the two connecting rods 3. Two limiting rods 35 are fixed to the outer surface of the connecting rod 34. A limiting groove 36 adapted to the two limiting rods 35 is provided at the upper end of the extension rod 31. Two arc grooves 37 adapted to the limiting rods 35 are symmetrically provided on the bottom surface of the inner cavity of the threaded hole 32. When the limiting rod 35 is located in the arc groove 37, the two connecting rods 3 will not move up and down, and it is also convenient to pull out multiple connecting rods 3. Figure 7 and Figure 8As shown, the limit groove 36 is connected to the inside of the arc groove 37, and the limit groove 36 is located in the upper middle part of the arc groove 37, so that when the device is in use, whether the upper connecting rod 3 rotates clockwise or counterclockwise, the limit rod 35 can be located in the arc groove 37. Only when the limit rod 35 is located in the middle of the inner cavity of the arc groove 37 can the limit rod 35 be easily pulled out through the limit groove 36, thereby facilitating the installation and disassembly of the two connecting rods 3.

[0039] The specific implementation of this embodiment is as follows: when the device is used, the seismometer is first installed at the lower end of the connecting rod 34, and then the connecting rod 3 is inserted into the hole, and the output end of the hydraulic rod 13 is controlled to extend;

[0040] When the output end of the hydraulic rod 13 is extended, the transmission rack 15 can drive the transmission gear 16 to rotate, and then the friction rod 17 and the friction rod 2 19 cooperate with each other, so that the friction rod 17 can rotate, and further the screw rod 33 is threadedly connected with the threaded hole 32. At this time, the friction rod 2 19 cooperates with the friction rod 3 21 to rotate the transmission gear 2 24, and further the clamping pliers 26 can clamp the extension rod 31, which is convenient for the threaded connection between the screw rod 33 and the threaded hole 32, and further due to the design of the limit groove 36 and the arc groove 37, the two connecting rods 3 can be connected when the device is in use.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A seismometer downhole device for geophysical exploration, comprising a device base (1) with a through hole in the middle, characterized in that: Support legs are fixed at the four corners of the lower end of the device base (1); a plurality of support rods (11) are fixed at the upper end of the device base (1); a mounting plate (12) is fixed to the upper ends of the plurality of support rods (11); a vertically arranged hydraulic rod (13) is fixed to the lower end of the mounting plate (12); a support frame (14) is fixed to the outer wall of the output end of the hydraulic rod (13); a vertically arranged transmission rack (15) is fixed to the upper end of the support frame (14); and the upper end of the device base (1) is fixed by a mounting plate. A transmission gear (16) meshing with the transmission rack (15) is rotatably mounted on the mounting bracket (1), a friction rod (17) is rotatably mounted on the output end of the hydraulic rod (13), a friction rod (19) matched with the friction rod (17) is rotatably mounted on the upper end of the device base (1) through a mounting bracket (18), a connecting rod (3) is further disposed at the lower end of the friction rod (17), and a clamping assembly (2) for clamping the connecting rod (3) is further disposed at the lower end of the device base (1); The friction rod 2 (19) is connected to the transmission gear 1 (16) via a belt and a bevel gear set; The clamping assembly (2) comprises a friction rod 3 (21) and a mounting bracket 3 (22) mounted on the lower end of the device base (1); a mounting bracket 4 (23) is fixed to one end of the mounting bracket 3 (22) close to the device base (1); a transmission gear 2 (24) is rotatably mounted to one end of the mounting bracket 4 (23) close to the device base (1); two transmission racks 2 (25) meshing with the transmission gears 2 (24) are symmetrically mounted to one end of the mounting bracket 4 (23) close to the device base (1); a clamping pliers (26) for clamping the connecting rod (3) is rotatably mounted to one end of the mounting bracket 4 (23) close to the device base (1); a torsion spring is provided at the rotation connection of the clamping pliers (26); and the two transmission racks 2 (25) are located between the handles of the clamping pliers (26); The friction rod three (21) is rotatably mounted on the lower end of the device base (1), and the friction rod three (21) and the friction rod two (19) are meshed with each other; The friction rod 3 (21) and the transmission gear 2 (24) are connected via a universal flexible shaft (27); The connecting rod (3) comprises an extension rod (31), the upper end of which is provided with a threaded hole (32), the lower end of the friction rod (17) is also fixed with a screw rod (33) meshing with the threaded hole (32), the lower end of the extension rod (31) is fixed with a connecting rod (34) matching with the threaded hole (32), the outer surface of the connecting rod (34) is fixed with two limiting rods (35), the upper end of the extension rod (31) is provided with a limiting groove (36) matching with the two limiting rods (35), and the bottom surface of the inner cavity of the threaded hole (32) is also symmetrically provided with two arc grooves (37) matching with the limiting rods (35).

2. A seismometer downhole device for geophysical exploration according to claim 1, characterized in that: When the output end of the hydraulic rod (13) extends, the two handles of the clamp (26) move toward each other, and the clamp (26) clamps the connecting rod (3); when the output end of the hydraulic rod (13) contracts, the two handles of the clamp (26) move toward each other.

3. A seismometer downhole device for geophysical exploration according to claim 1, characterized in that: The limiting groove (36) is communicated with the interior of the arc-shaped groove (37), and the limiting groove (36) is located in the upper middle portion of the arc-shaped groove (37).

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