Sea bottom seismograph mounting rack with leveling capability

Abstract

The embodiment of the invention provides an ocean bottom seismograph mounting frame with leveling capability, and relates to the field of supporting. Comprising a base, a plurality of extension seats, a translation mechanism, a positioning mechanism and a through hole, the extension seats are mounted on the circumference of the base in the circumferential direction, inner cavities of the extension seats are communicated with an inner cavity of the base, the through hole is formed in the center of the base, and the translation mechanism is arranged in the through hole. The translation mechanism and the positioning mechanism are mounted on the extension seat; the positioning mechanism comprises a fixing block, a positioning claw and a sliding rod, the fixing block is installed on the side, away from the base, of the extending base, the positioning claw penetrates through the fixing block in a sliding mode, and the sliding rod is installed at the top end of the positioning claw. The positioning claws are inserted into the seabed, so that the equipment stability is improved; the positioning claws can be sequentially driven to be inserted into seabed sediment, and the equipment is prevented from being lifted; obstacles such as stones can be pushed away, normal landing of the ocean bottom seismograph is ensured, and poor receiving of vibration signals is prevented.

Description

Technical Field

[0001] The present invention relates to the field of support equipment, and specifically refers to a seabed seismograph mounting rack with a leveling ability. Background Art

[0002] A seabed seismograph is an instrument specifically used for detecting seabed seismic activities; it can detect and record small nearby natural earthquakes, be able to obtain information on the movement of the seabed crust, provide key data for studying plate tectonics, seismic activity laws, etc., and can also detect and record marine artificial seismic source signals, such as artificial seismic source signals generated during marine engineering exploration, geological surveys, etc., and is widely used in the field of seismology.

[0003] Traditional seabed seismograph mounting racks are usually made of metal materials, such as stainless steel, aluminum alloy, etc. Its design structure is relatively simple, mainly composed of a frame and several brackets, used to support and fix the seismograph. When in use, the seabed seismograph is fixedly installed with the mounting rack, and then traction equipment such as steel cables is connected to the brackets. When deploying, the whole of the seabed seismograph and the mounting rack is put into the designated sea area, and it can freely fall to the seabed by relying on its gravity.

[0004] After the traditional seabed seismograph mounting rack and the seabed seismograph are installed, it is mainly used to lift and release the seabed seismograph, and it cannot improve the stability of the seabed seismograph; since the seabed seismograph lacks corresponding stability after being naturally put into the seabed, when affected by external factors such as marine organisms or ocean currents, it is prone to skew or move, affecting the accurate acquisition of data.

[0005] Based on this, the present invention is proposed. Summary of the Invention

[0006] According to an embodiment of the present invention, there is provided a seabed seismograph mounting rack with a leveling ability. It is used to solve the problem that the existing seabed seismograph lacks corresponding stability after being naturally put into the seabed and is prone to skew or move.

[0007] In a first aspect of the present invention, there is provided a seabed seismograph mounting rack with a leveling ability.

[0008] The seabed seismograph mounting rack with a leveling ability includes: a base, an extension seat, a translation mechanism, a positioning mechanism, and a through hole. The number of the extension seats is several, which are respectively installed on the circumference of the base along the circumferential direction, and the inner cavity of the extension seat is communicated with the inner cavity of the base. The through hole is opened at the central position of the base, and the translation mechanism and the positioning mechanism are installed on the extension seat;

[0009] The positioning mechanism includes a fixed block, a positioning claw, and a sliding rod. The fixed block is installed on the side of the extension seat away from the base. The positioning claw slides through the fixed block, and the sliding rod is installed at the top of the positioning claw.

[0010] The movement of the translation mechanism can drive the positioning claw to move along its own axial direction.

[0011] Preferably, the translation mechanism includes a moving seat, a slideway, a slider, and a chute. The moving seat is installed on the extension seat. The slideway is opened on the moving seat. The slideway is inclined upward away from the base. One end of the sliding rod away from the positioning claw extends into the slideway.

[0012] The number of the sliders is two, which are symmetrically installed on the moving seat respectively. The number of the chutes is two, which are symmetrically installed on the extension seat respectively. One side of the slider away from the moving seat is slidably installed in the chute.

[0013] Preferably, a moving groove is opened on the extension seat. One end of a driving rod is installed on the lower surface of the moving seat, and the other end of the driving rod extends into the extension seat through the moving groove. A driving mechanism is installed in the inner cavities of the base and the extension seat, and a propulsion mechanism is installed in the extension seat. The driving mechanism and the propulsion mechanism cooperate to drive the driving rod to move along the moving groove.

[0014] Preferably, the driving mechanism includes a toothed ring, a first gear, a motor, a protective shell, and a second gear. The toothed ring is rotatably installed in the inner cavity of the base. The first gear is rotatably installed in the inner cavity of the base, and the first gear is meshed with the toothed ring. The motor is installed on the base. The output end of the motor extends into the inner cavity of the base and is connected to the first gear. The protective shell is installed on the base, and the motor is located inside the protective shell. The second gear is rotatably installed in the extension seat, and the second gear is meshed with the toothed ring.

[0015] The propulsion mechanism is installed on the second gear.

[0016] Preferably, the outer circumference of the toothed ring includes teeth and a limiting section, and the second gear is meshed with the teeth.

[0017] Preferably, the propulsion mechanism includes a limiting channel, a first dial block, a second dial block, a rotating shaft, and a torsion spring. The limiting channel is opened on the second gear, and one end of the driving rod away from the moving seat is embedded in the limiting channel. The first dial block and the second dial block are respectively rotatably installed on the second gear through the rotating shaft, and a torsion spring is installed on the rotating shaft.

[0018] Preferably, the limiting channel includes a first limiting groove and a second limiting groove which communicate with each other, and the diameter of the first limiting groove is larger than that of the second limiting groove.

[0019] Preferably, two first limiting posts for limiting the first dial block are installed on the second gear;

[0020] Two second limiting posts for limiting the second dial block are also installed on the second gear.

[0021] Preferably, a leveling assembly is further installed on the base;

[0022] The leveling assembly includes a rotating seat, a lifting seat, a spring, a leveling rod, a convex rod, a pushing piece and a receiving groove. The rotating seat is rotatably installed on the lower surface of the base, and the receiving groove is opened on the lower surface of the base; one end of the rotating seat extends into the inner cavity of the base, and the other end of the rotating seat is located in the receiving groove. The rotating seat is a hollow structure with an open bottom. The lifting seat is installed in the inner cavity of the rotating seat. The lifting seat is prism-shaped and is adapted to the shape of the inner cavity of the rotating seat. A spring is installed between the lifting seat and the inner wall of the rotating seat; a leveling rod is installed at the bottom of the lifting seat, and the shape of the leveling rod is adapted to the shape of the receiving groove;

[0023] A convex rod is installed at one end of the lifting seat located in the inner cavity of the base; a turntable is installed at the bottom of the toothed ring, the pushing piece is installed on the turntable, and the position of the pushing piece is adapted to the position of the convex rod;

[0024] A retaining piece for limiting the convex rod is also installed on the turntable.

[0025] Preferably, a fixing seat is installed on the base, a bracket for lifting the fixing seat away from the upper surface of the base is installed between the base and the fixing seat, and a plurality of hanging rings are installed at the top end of the fixing seat;

[0026] The fixing seat is a hollow structure, and a power supply unit for supplying power to the motor is installed in the inner cavity of the fixing seat.

[0027] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0028] 1. An installation frame for a seafloor seismograph with leveling ability provided by the present invention can, through the movement of a plurality of moving seats and the cooperation of a sliding groove and a sliding rod, enable a plurality of positioning claws to be respectively inserted into the seabed obliquely, and improve the stability of the device by using the positioning ability provided by the positioning claws in various directions.

[0029] 2. In the present invention, the rotation of the toothed ring can drive the rotation of each second gear, causing the driving rod to slide in the first limiting groove and the second limiting groove. By the limitation of the first shifting block and the second shifting block, the driving rod can be switched within the inner cavities of the first limiting groove and the second limiting groove, thereby driving the moving seat to move. Since the first limiting groove and the second limiting groove are arc-shaped, it can ensure that the position of the driving rod remains unchanged in the first limiting groove or the second limiting groove, improving the stability of the moving seat.

[0030] 3. In the present invention, by the arrangement of the teeth, each moving seat can be driven to move in sequence, and then each positioning claw can be inserted into the soil in sequence, improving the stability of the equipment during this process and avoiding the equipment being lifted due to the simultaneous insertion of multiple positioning claws.

[0031] 4. In the present invention, through the arrangement of the limiting section, it is ensured that when the teeth do not mesh with the second gear, the second gear is braked, thereby improving the stability of each positioning claw and avoiding the positioning claw retracting due to external force.

[0032] 5. In the present invention, through the rotation of the turntable, the pushing piece can be driven to rotate the convex rod, so that the rotating seat drives the lifting seat and the leveling rod to rotate, pushing away obstacles such as stones directly below the through hole, avoiding affecting the normal landing of the seabed seismograph and preventing poor reception of vibration signals.

[0033] In summary, the present invention improves the equipment stability by inserting the positioning claws into the seabed; it can also drive the positioning claws to insert into the seabed sediment in sequence to avoid the equipment being lifted; the present invention can also push away obstacles such as stones to ensure the normal landing of the seabed seismograph and prevent poor reception of vibration signals.

[0034] It should be understood that the content described in the Summary of the Invention section is not intended to limit the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Combined with the drawings and referring to the following detailed description, the above and other features, advantages, and aspects of the embodiments of the present invention will become more obvious. In the drawings, the same or similar reference numerals represent the same or similar elements, where:

[0036] Figure 1 shows a schematic diagram of the seabed seismograph mounting frame with leveling ability and the mounting state of the seabed seismograph according to an embodiment of the present invention;

[0037] Figure 2 shows a schematic diagram of the seabed seismograph mounting frame with leveling ability and the separated state of the seabed seismograph according to an embodiment of the present invention;

[0038] Figure 3Shows a bottom view of a seabed seismograph mount with leveling ability according to an embodiment of the present invention;

[0039] Figure 4 Shows a sectional view of a seabed seismograph mount with leveling ability according to an embodiment of the present invention;

[0040] Figure 5 Shows an exploded structural schematic diagram of a seabed seismograph mount with leveling ability according to an embodiment of the present invention;

[0041] Figure 6 Shows a structural schematic diagram of a gear ring and a second gear of a seabed seismograph mount with leveling ability according to an embodiment of the present invention;

[0042] Figure 7 Shows an exploded structural schematic diagram of a propulsion mechanism of a seabed seismograph mount with leveling ability according to an embodiment of the present invention;

[0043] Figure 8 Shows a structural schematic diagram of a translation mechanism and a positioning mechanism of a seabed seismograph mount with leveling ability according to an embodiment of the present invention;

[0044] Figure 9 Shows an exploded structural schematic diagram of a leveling mechanism of a seabed seismograph mount with leveling ability according to an embodiment of the present invention;

[0045] Figure 10 Shows an enlarged view of part A of a seabed seismograph mount with leveling ability according to an embodiment of the present invention.

[0046] The reference numerals are as follows:

[0047] 1, base; 2, extension base, 21, moving groove; 3, fixed base, 31, power supply unit; 4, bracket; 5, lifting ring; 6, translation mechanism, 61, moving seat, 62, slideway, 63, driving rod, 64, slider, 65, sliding groove; 7, positioning mechanism, 71, fixed block, 72, positioning claw, 73, sliding rod; 8, through hole; 9, driving mechanism, 91, gear ring, 9101, tooth, 9102, limiting section; 92, first gear; 93, turntable; 94, motor; 95, protective shell; 96, second gear; 10, propulsion mechanism, 101, first limiting groove, 102, second limiting groove, 103, first shifting block, 104, second shifting block, 105, first limiting post, 106, second limiting post, 107, rotating shaft, 108, torsion spring; 11, leveling assembly, 111, rotating seat, 112, lifting seat, 113, spring, 114, leveling rod, 115, convex rod, 116, pushing piece, 117, blocking piece, 108, receiving groove; 200, seabed seismograph. Detailed implementation manners

[0048] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any creative effort fall within the scope of protection of the present invention.

[0049] In addition, the term "and / or" in this document is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0050] Such as Figure 1 and Figure 2As shown, the bottom seismograph mounting frame with leveling capability is used for observing natural earthquakes and is also suitable for observing artificial seismic sources. When in use, the device sinks to the bottom of the sea. Since the device needs to be naturally sunk to the bottom of the sea by its own weight when it is deployed, the device is completely in a natural static state after entering the seabed. When affected by marine life or undercurrents in the sea, the device will shake, tilt or even move, which will affect the device's accurate acquisition of information. Based on this, the present invention includes: a base 1, a fixing base 3, a bracket 4, a lifting ring 5 and a through hole 8. The fixing base 3 is installed on the base 1. The bracket 4 for lifting the fixing base 3 off the upper surface of the base 1 is installed between the base 1 and the fixing base 3. The space formed between the base 1 and the fixing base 3 is used to place the seafloor seismograph 200. When in use, the seafloor seismograph 200 is fixed to the base 1 by bolts. The seafloor seismograph 200 in this embodiment is SinOBS-BB, which can withstand a water depth of 6500m and can detect and record marine artificial source signals of 1-100Hz and detect and record nearby small natural earthquakes of 0.1Hz-100Hz. The through hole 8 is opened at the center of the base 1. When the seafloor seismograph 200 is installed, its bottom is located in the through hole 8, and the bottom surface of the seafloor seismograph is flush with the bottom surface of the base 1. When the device falls on the seafloor, it can ensure that the seafloor seismograph 200 is in direct contact with the seafloor, thereby receiving vibration signals more accurately. Several lifting rings 5 ​​are installed on the top of the fixing seat 3. The traction equipment such as steel cables are connected and fixed through the lifting rings 5, so that the lifting of the whole equipment can be realized. In addition, the fixing seat 3 is a hollow structure, and the inner cavity of the fixing seat 3 is installed with a power supply unit 31 for powering the seafloor seismograph 200. The power supply unit 31 is a battery with more than 50,000 W·h of electricity, which can ensure that the seafloor seismograph can work continuously for a long time; at the same time, the fixing seat 3 is a sealed structure made of pressure-resistant material, which ensures that the equipment can withstand the corresponding pressure when it falls to the seabed, and at the same time ensures that the operating environment of the power supply unit 31 is stable.

[0051] The base 1 in this embodiment is made of high-density material, and stainless steel is used in this embodiment, which has high density and quality, ensuring that the entire device is thrown into the sea, and the base 1 can always be located at the bottom, ensuring that the device falls vertically downward naturally.

[0052] refer to Figure 2 , Figure 5 and Figure 8, the seabed seismograph mount with leveling ability further includes extension seats 2, a translation mechanism 6 and a positioning mechanism 7. The number of extension seats 2 is several, which are respectively installed on the circumference of the base 1 along the circumferential direction, and the inner cavity of the extension seat 2 is communicated with the inner cavity of the base 1. The translation mechanism 6 and the positioning mechanism 7 are installed on the extension seat 2. The positioning mechanism 7 includes a fixed block 71, positioning claws 72 and a slide rod 73. The fixed block 71 is installed on the side of the extension seat 2 away from the base 1. The positioning claws 72 slide through the fixed block 71. The positioning claws 72 are arc-shaped sheet structures made of stainless steel and are inclined downward away from the base 1 from top to bottom. At the same time, channels of corresponding shapes are opened on the fixed block 71. A plurality of positioning claws 72 located in the circumferential direction of the equipment are inclined and inserted into the seabed sediment soil, which can improve the anti-pulling property of the equipment. At the same time, the arc-shaped sheet structure can increase the contact area with the sediment, further improving the lateral stability of the equipment. At the same time, the bottom end of the positioning claw 72 is pointed, which is convenient for inserting into the sediment. The slide rod 73 is installed at the top end of the positioning claw 72. The movement of the translation mechanism 6 can drive the positioning claw 72 to move along its own axial direction through the interaction with the slide rod 73.

[0053] Reference Figure 8 , the translation mechanism 6 includes a moving seat 61, a slideway 62, a driving rod 63, a slider 64 and a chute 65. The moving seat 61 is installed on the extension seat 2. The slideway 62 is opened on the moving seat 61. The slideway 62 is inclined upward away from the base 1 from bottom to top. One end of the slide rod 73 away from the positioning claw 72 extends into the slideway 62. When the moving seat 61 moves from the base 1 in the direction away from the base 1, through the limit of the slideway 62 on the slide rod 73 and the limit of the fixed block 71 on the positioning claw 72, the positioning claw 72 can be driven to move obliquely downward along its own axis. One end of the driving rod 63 is installed on the lower surface of the moving seat 61; a moving groove 21 is opened on the extension seat 2, and the other end of the driving rod 63 extends into the extension seat 2 through the moving groove 21. The direction and length of the moving groove 21 are consistent with the moving direction and distance of the moving seat 61, and the stability of the moving seat 61 can be maintained by limiting the driving rod 63.

[0054] This solution can realize the positioning claws 72 to be inserted obliquely downward into the sediment, improving the stability of the equipment on the seabed. At the same time, through the special shape of the positioning claws 72, the stability ability can be further improved, avoiding the shaking of the equipment so as not to affect the reception of vibration signals.

[0055] In order to improve the stability of the moving base 61 during movement and avoid dislocation, the following solution is proposed: The number of sliders 64 is two, which are symmetrically installed on the moving base 61 respectively. The number of sliding grooves 65 is two, which are symmetrically installed on the extension base 2 respectively. The shape of the sliding groove 65 is adapted to the slider 64. The side of the slider 64 away from the moving base 61 is slidably installed in the sliding groove 65. By using the limit of the sliding groove 65 on the slider 64, the moving direction of the moving base 61 can be fixed, and the moving base 61 can be prevented from shaking.

[0056] Reference Figure 4 、 Figure 5 、 Figure 6 , a driving mechanism 9 is installed in the inner cavities of the base 1 and the extension base 2. The driving mechanism 9 includes a toothed ring 91, a first gear 92, a motor 94, a protective shell 95 and a second gear 96. The toothed ring 91 is rotatably installed in the inner cavity of the base 1. The inner side wall of the toothed ring 91 is provided with internal teeth. The first gear 92 is rotatably installed in the inner cavity of the base 1, and the first gear 92 is meshed with the internal teeth provided on the inner side wall of the toothed ring 91 to ensure that the toothed ring 91 can be driven to rotate together when the first gear 92 rotates. The motor 94 is installed on the base 1. The output end of the motor 94 extends into the inner cavity of the base 1 and is connected to the first gear 92. Starting the motor 94 can drive the first gear 92 to rotate. The protective shell 95 is installed on the base 1. The protective shell 95 is a sealed shell made of compressive material, and its inner cavity and the base 1 form a sealed space. The motor 94 is located in the protective shell 95, which can ensure that the motor 94 is in a space environment with stable air pressure and sealed waterproof. In this embodiment, the selected motor 94 is SF77H24V-185, and the output end can be locked after shutdown. It has waterproof and moisture-proof properties, and waterproof parts such as waterproof rings are added at the connection between the motor 94 and the base 1, which can further ensure the stability of the working environment of the motor 94. The power supply for the motor 94 during operation comes from the power supply unit 31. In addition, the outer circumferential of the toothed ring 91 includes teeth 9101 and a limiting section 9102. The second gear 96 is rotatably installed in the extension base 2, and the second gear 96 is meshed with the teeth 9101 provided on the toothed ring 91. When the toothed ring 91 rotates and the teeth 9101 correspond to the second gear 96, the second gear 96 will start to transmit. When the teeth 9101 are disengaged from the contact with the second gear 96, the limiting section 9102 will contact two adjacent teeth in the second gear 96 at the same time, thereby preventing the second gear 96 from rotating, and realizing the braking of the second gear 96.

[0057] The propulsion mechanism 10 is installed on the second gear 96 located in the extension base 2. The cooperation of the driving mechanism 9 and the propulsion mechanism 10 can drive the driving rod 63 to move along the moving groove 21. Reference Figure 6 and Figure 7, the propulsion mechanism 10 is introduced as follows: the propulsion mechanism 10 includes a first limiting groove 101, a second limiting groove 102, a first shifting block 103, a second shifting block 104, a rotating shaft 107 and a torsion spring 108. The limiting channel includes the first limiting groove 101 and the second limiting groove 102. The first limiting groove 101 and the second limiting groove 102 are both provided on the second gear 96 and are interconnected. The two together constitute the limiting channel. The end of the driving rod 63 away from the moving seat 61 is embedded in the limiting channel. At the same time, the diameter of the first limiting groove 101 is greater than the diameter of the second limiting groove 102. When the driving rod 63 slides in the first limiting groove 101 and the second limiting groove 102, the position of the driving rod 63 will change. The first shifting block 103 is rotatably mounted on the second gear 96 via the rotating shaft 107. The rotating shaft 107 is provided with a torsion spring 108. The two ends of the torsion spring 108 are respectively connected to the inner wall of the first shifting block 103 and the second gear 96. In addition, two first limiting posts 105 are installed on the second gear 96 to limit the first shift block 103. The two first limiting posts 105 limit the rotation range of the first shift block 103. Initially, the driving rod 63 is located in the second limiting groove 102. At this time, the first shift block 103 contacts one of the limiting posts 105. As the second gear 96 rotates, the driving rod 63 and the second limiting groove 102 move relative to each other. When the driving rod 63 moves to the first shift block 103 and contacts it, it will shift the first shift block 103 to rotate, thereby deforming the corresponding torsion spring 108. When the first shift block 103 contacts the other limiting post 105, a unique route between the second limiting groove 102 and the first limiting groove 101 is formed. With the limitation of the first shift block 103, the driving rod 63 enters the first limiting groove 101, and then the elastic force of the torsion spring 108 is used to reset the first shift block 103.

[0058] The second shift block 104 is rotatably mounted on the second gear 96 via a rotating shaft 107. Another torsion spring 108 is mounted on the rotating shaft 107. The two ends of the torsion spring 108 are respectively connected to the inner wall of the second shift block 104 and the second gear 96. In addition, two second limiting posts 106 are mounted on the second gear 96 to limit the second shift block 104. The two second limiting posts 106 limit the rotation range of the second shift block 104. When the driving rod 63 enters the first limiting groove 101, as the second gear 96 rotates, the driving rod 63 will slide in the first limiting groove 101, and then the second shift block 104 will be rotated, and the torsion spring 108 connected thereto will be deformed. At this time, the second shift block 104 will form a unique route between the first limiting groove 101 and the second limiting groove 102. By limiting the second shift block 104, the driving rod 63 returns to the second limiting groove 102, and then the elastic force of the torsion spring 108 is used to reset the second shift block 104.

[0059] The specific usage method is as follows: First, fix the seafloor seismograph 200 to the base 1 with bolts. Then, connect the lifting ring 5 to the external steel cable. Subsequently, put the device into the sea and let it naturally fall to the seabed. Then, turn on the motor 94 to drive the first gear 92 to rotate, and then drive the toothed ring 91 to rotate. Use the teeth 9101 to drive the second gear 96 to rotate, so that the drive rod 63 enters the first limiting groove 101 through the second limiting groove 102. With the limitation of the moving groove 21, the drive rod 63 moves away from the base 1. At this time, the moving seat 61 starts to move away from the base 1. Using the limitation of the slideway 62 on the slide rod 73, the positioning claw 72 moves obliquely downward along its own axis until it inserts into the seafloor sediment. As the toothed ring 91 rotates, each second gear 96 will rotate in sequence, so that each positioning claw 72 inserts into the sediment in sequence. Thus, the stability of the device on the seabed is improved.

[0060] Through the settings of the teeth 9101 and the limiting section 9102, each second gear 96 can be driven to rotate in sequence, and braking ability can be provided for the second gear 96 that has rotated in place, ensuring that each positioning claw 72 inserts into the sediment in sequence and preventing multiple positioning claws 72 from exerting force simultaneously, which may cause the device to be lifted. It can also complete the work relying only on one power output, reducing the spatial volume of the device, saving the device cost, and having high stability control through the mechanical structure.

[0061] In actual use, the seabed where the device is placed is usually soft sediment. If there are uneven places in the sediment, they will be flattened under the action of the gravity of the device itself. At this time, the device can receive the seabed vibration signal well. However, there will be some hard debris such as stones on the surface of the seafloor sediment. When the bottom of the seafloor seismograph 200 lands on a stone, it cannot completely press the stone into the sediment due to its own gravity. If this causes the bottom of the seafloor seismograph 200 not to fully fit the seabed, it will affect data collection. For the situation where the seabed cannot be actively leveled, the following solution is proposed: A leveling component 11 is also installed on the base 1. The leveling component 11 can push away the debris of the stone directly below the seafloor seismograph 200, ensuring that the seafloor seismograph 200 is completely in contact with the seafloor sediment and ensuring accurate reception of the vibration signal.

[0062] Reference Figure 3 、 Figure 5 、 Figure 9 and Figure 10, the leveling assembly 11 is introduced. The leveling assembly 11 includes a rotating seat 111, a lifting seat 112, a spring 113, a leveling rod 114, a convex rod 115, a pushing piece 116, a retaining piece 117 and a storage groove 118. The rotating seat 111 is rotatably installed on the lower surface of the base 1. The storage groove 118 is opened on the lower surface of the base 1. One end of the rotating seat 111 extends into the inner cavity of the base 1, and the other end of the rotating seat 111 is located in the storage groove 118. The rotating seat 111 is a hollow structure with an open bottom. The lifting seat 112 is installed in the inner cavity of the rotating seat 111. The lifting seat 112 is arranged in a prism shape and is adapted to the shape of the inner cavity of the rotating seat 111. The prism shape of the lifting seat 112 can prevent relative displacement between the lifting seat 112 and the rotating seat 111, ensuring that the lifting seat 112 can only move in the up and down directions. A spring 113 is installed between the inner wall of the lifting seat 112 and the rotating seat 111. The spring 113 is a helical spring and will be stretched or compressed under external force. When the lifting seat 112 is forced to move downward, the spring 113 will be stretched, and the lifting seat 112 will be reset by the pulling force of the spring 113 after the external force is removed. A leveling rod 114 is installed at the bottom of the lifting seat 112. The shape of the leveling rod 114 is adapted to the shape of the storage groove 118. When the leveling rod 114 corresponds to the position of the storage groove 118 and the spring 113 is in a natural state, the leveling rod 114 can be received in the storage groove 118, and at this time, the bottom of the leveling rod 114 does not extend out of the inner cavity of the storage groove 118.

[0063] A turntable 93 is installed at the bottom of the gear ring 91. The pushing piece 116 is installed on the turntable 93. A convex rod 115 is installed at one end of the lifting seat 112 located in the inner cavity of the base 1, and the position of the pushing piece 116 is adapted to the position of the convex rod 115. When the turntable 93 rotates with the gear ring 91, the convex rod 115 can be toggled by the pushing piece 116, so that the rotating seat 111 rotates. In addition, a retaining piece 117 for limiting the convex rod 115 is installed on the turntable 93, and a limiting block 119 for limiting the leveling rod 114 is installed on the lower surface of the base 1.

[0064] The specific working principle of the leveling mechanism 11 is as follows: in the initial state, the leveling rod 114 is attached to the lower surface of the base 1, and the limit block 119 is used to prevent the leveling rod 114 from continuing to rotate in the direction away from the storage slot 118. At the same time, the baffle 117 is attached to the protruding rod 115 to prevent the leveling rod 114 from rotating in the direction of the storage slot, and then the leveling rod 114 is fixed by the baffle 117 and the limit block 119. At this time, the spring 113 is in a stretched state. After the entire device falls on the seabed, as the gear ring 91 rotates, the turntable 93 starts to rotate, the baffle 117 moves away from the protruding rod 115, and the push piece 116 approaches the protruding rod 115 and drives the rotating seat 111 to rotate. At this time, the leveling rod 114 rotates synchronously in the direction of the storage slot 118. During this process, the leveling rod 114 passes through the bottom of the seafloor seismometer 200 and pushes away the rocks and other debris at the bottom of the seafloor seismometer 200 in the through hole 8, ensuring that the seafloor seismometer 200 is in complete contact with the seafloor mud.

[0065] When the leveling rod 114 corresponds to the receiving groove 118 , the push piece 116 is separated from the contact with the protruding rod 115 , and the lifting seat 112 is moved toward the inner cavity of the rotating seat 111 by the pulling force of the spring 113 , so that the leveling rod 114 can be received in the receiving groove 118 .

[0066] It is worth noting that in this embodiment, the leveling rod 114 completes its work by passing through the bottom of the seafloor seismograph 200, and there is no need to completely store the leveling rod 114 in the storage slot 118. When in use, the leveling rod 114 will be buried in the surface of the seafloor mud and sand under the effect of the gravity of the equipment, and when rotating, it will only push away the debris on the surface of the mud and sand that is in direct contact with the seafloor seismograph 200. After completing this action, whether the leveling rod 114 is completely stored in the storage slot 118 will not affect the direct contact between the seafloor seismograph 200 and the seafloor mud and sand.

[0067] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A seafloor seismograph mounting frame with leveling capability, characterized in that: include: A base (1), an extension base (2), a translation mechanism (6), a positioning mechanism (7) and a through hole (8), wherein the number of the extension bases (2) is plural and they are respectively mounted on the circumference of the base (1) along the circumferential direction, and the inner cavity of the extension base (2) is connected to the inner cavity of the base (1), the through hole (8) is opened at the center position of the base (1), and the translation mechanism (6) and the positioning mechanism (7) are mounted on the extension base (2); The positioning mechanism (7) comprises a fixed block (71), a positioning claw (72) and a sliding rod (73); the fixed block (71) is mounted on a side of the extension seat (2) away from the base (1); the positioning claw (72) slides through the fixed block (71); and the sliding rod (73) is mounted on the top of the positioning claw (72); The movement of the translation mechanism (6) can drive the positioning claw (72) to move along its own axial direction.

2. The seafloor seismograph mounting frame with leveling capability according to claim 1, characterized in that: The translation mechanism (6) comprises a moving seat (61), a slideway (62), a slider (64) and a slide groove (65); the moving seat (61) is mounted on the extension seat (2); the slideway (62) is provided on the moving seat (61); the slideway (62) is inclined from bottom to top toward a side away from the base (1); and one end of the slide rod (73) away from the positioning claw (72) extends into the slideway (62); There are two sliders (64) which are symmetrically mounted on the movable seat (61); there are two slide grooves (65) which are symmetrically mounted on the extension seat (2); and the slider (64) is slidably mounted in the slide groove (65) on a side away from the movable seat (61).

3. The seafloor seismograph mounting frame with leveling capability according to claim 2, characterized in that: The extension seat (2) is provided with a movable groove (21); one end of a driving rod (63) is installed on the lower surface of the movable seat (61), and the other end of the driving rod (63) extends into the extension seat (2) through the movable groove (21); a driving mechanism (9) is installed in the inner cavity of the base (1) and the extension seat (2), and a propulsion mechanism (10) is installed in the extension seat (2), and the driving mechanism (9) and the propulsion mechanism (10) cooperate to drive the driving rod (63) to move along the movable groove (21).

4. The seafloor seismograph mounting frame with leveling capability according to claim 3, characterized in that: The driving mechanism (9) comprises a gear ring (91), a first gear (92), a motor (94), a protective shell (95) and a second gear (96); the gear ring (91) is rotatably mounted in the inner cavity of the base (1); the first gear (92) is rotatably mounted in the inner cavity of the base (1), and the first gear (92) is meshingly connected with the gear ring (91); the motor (94) is mounted on the base (1); an output end of the motor (94) extends into the inner cavity of the base (1) and is connected to the first gear (92); the protective shell (95) is mounted on the base (1), and the motor (94) is located in the protective shell (95); the second gear (96) is rotatably mounted in the extension seat (2), and the second gear (96) is meshingly connected with the gear ring (91); The propulsion mechanism (10) is mounted on the second gear (96).

5. The seafloor seismograph mounting frame with leveling capability according to claim 4, characterized in that: The outer circumference of the gear ring (91) includes teeth (9101) and a limiting segment (9102), and the second gear (96) is meshingly connected with the teeth (9101).

6. The seafloor seismograph mounting frame with leveling capability according to claim 5, characterized in that: The propulsion mechanism (10) comprises a limiting channel, a first shift block (103), a second shift block (104), a rotating shaft (107) and a torsion spring (108); the limiting channel is provided on the second gear (96); an end of the driving rod (63) away from the moving seat (61) is embedded in the limiting channel; the first shift block (103) and the second shift block (104) are respectively rotatably mounted on the second gear (96) via the rotating shaft (107); and a torsion spring (108) is mounted on the rotating shaft (107).

7. The seafloor seismograph mounting frame with leveling capability according to claim 6, characterized in that: The limiting channel comprises a first limiting groove (101) and a second limiting groove (102), the first limiting groove (101) and the second limiting groove (102) are connected to each other, and the diameter of the first limiting groove (101) is greater than the diameter of the second limiting groove (102).

8. The seafloor seismograph mounting frame with leveling capability according to claim 6 or 7, characterized in that: The second gear (96) is provided with two first limiting posts (105) for limiting the position of the first shifting block (103); The second gear (96) is also provided with two second limiting posts (106) for limiting the position of the second shifting block (104).

9. The seafloor seismograph mounting frame with leveling capability according to any one of claims 4 to 7, characterized in that: A leveling component (11) is also installed on the base (1); The leveling assembly (11) comprises a rotating seat (111), a lifting seat (112), a spring (113), a leveling rod (114), a protruding rod (115), a push piece (116) and a receiving groove (118); the rotating seat (111) is rotatably mounted on the lower surface of the base (1); the receiving groove (118) is provided on the lower surface of the base (1); one end of the rotating seat (111) extends into the inner cavity of the base (1); the other end of the rotating seat (111) is located in the receiving groove (118). In the embodiment, the rotating seat (111) is a hollow structure with an open bottom, the lifting seat (112) is installed in the inner cavity of the rotating seat (111), the lifting seat (112) is arranged in a prism shape and is adapted to the shape of the inner cavity of the rotating seat (111), and a spring (113) is installed between the lifting seat (112) and the inner wall of the rotating seat (111); a leveling rod (114) is installed at the bottom of the lifting seat (112), and the shape of the leveling rod (114) is adapted to the shape of the receiving groove (118); A convex rod (115) is installed at one end of the lifting seat (112) located in the inner cavity of the base (1); a rotating disk (93) is installed at the bottom of the gear ring (91), and the push piece (116) is installed on the rotating disk (93), and the position of the push piece (116) is adapted to the position of the convex rod (115); The rotating disk (93) is also provided with a blocking piece (117) for limiting the position of the protruding rod (115).

10. The seafloor seismograph mounting frame with leveling capability according to claim 8, characterized in that: A fixing seat (3) is installed on the base (1), a bracket (4) for lifting the fixing seat (3) off the upper surface of the base (1) is installed between the base (1) and the fixing seat (3), and a plurality of lifting rings (5) are installed on the top of the fixing seat (3); The fixing seat (3) is a hollow structure, and a power supply unit (31) for supplying power to the motor (94) is installed in the inner cavity of the fixing seat (3).

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