In-situ test transducer clutch mechanism and in-situ test platform

Abstract

The present invention discloses an in-situ test transducer clutch mechanism and an in-situ test platform, which includes a locking mechanism for being arranged on the in-situ test platform to lock and unlock a connecting rod of a transducer. The locking mechanism includes at least two movable clamping blocks and a driving mechanism for driving the movement of each clamping block. The at least two clamping blocks are circumferentially distributed along the connecting rod. When each clamping block abuts against the connecting rod, the connecting rod is locked, and when each clamping block is disengaged from the connecting rod, the connecting rod is unlocked. With such a setting, the in-situ test transducer clutch mechanism of the present invention can disconnect the connecting rod from the in-situ test platform during the test to avoid the transmission of acoustic signals to the in-situ test platform. After the test is completed, the connecting rod can be connected to the in-situ test platform again, so that the connecting rod and the transducer rise with the in-situ test platform, solving the problem in the prior art that the acoustic signals will propagate along the connecting rod and the in-situ test platform, resulting in a reduction in the energy of the acoustic signals propagating in the sediment.

Description

Technical Field

[0001] The present invention relates to the technical field of in-situ testing of underwater sediments, and particularly to an in-situ testing transducer clutch mechanism and an in-situ testing platform. Background Art

[0002] For subaqueous sediments, such as the in-situ measurement technology of the shear wave velocity and attenuation coefficient of submarine sediments, it refers to the technology of placing the instrument directly on the seabed for measurement. The in-situ acoustic measurement of submarine sediments can obtain the acoustic characteristic parameters of the seabed in its true in-situ state, and can effectively avoid the measurement errors caused by the disturbance of the sediments due to sampling or handling. Compared with the laboratory acoustic characteristic measurement of sediment sampling, it has higher precision and accuracy.

[0003] Currently, when conducting in-situ acoustic measurement of the shear wave of submarine sediments, it is usually carried out by lowering an in-situ testing platform to the seabed. The acoustic transducer is connected to the in-situ testing platform through a connecting rod. The acoustic transducer penetrates into the submarine sediments to emit acoustic signals. However, since the acoustic transducer is connected to the in-situ testing platform through the connecting rod, part of the energy in the acoustic signal will propagate along the connecting rod and the in-situ testing platform, resulting in a reduction in the energy of the acoustic signal propagating in the sediments, which greatly interferes with the measurement of the acoustic attenuation coefficient of the sediments and greatly reduces the measurement accuracy. Therefore, how to solve the problem that when measuring with the in-situ testing platform in the prior art, the acoustic signal will propagate along the connecting rod and the in-situ testing platform, resulting in a reduction in the energy of the acoustic signal propagating in the sediments is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an in-situ testing transducer clutch mechanism and an in-situ testing platform that solve the problem that when measuring with the in-situ testing platform in the prior art, the acoustic signal will propagate along the connecting rod and the in-situ testing platform, resulting in a reduction in the energy of the acoustic signal propagating in the sediments.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides an in-situ testing transducer clutch mechanism, including a locking mechanism for setting on an in-situ testing platform to lock and unlock a connecting rod of a transducer. The locking mechanism includes at least two movable blocks and a driving mechanism for driving the movement of each of the blocks. At least two of the blocks are circumferentially distributed along the connecting rod. When each of the blocks abuts against the connecting rod, the connecting rod is locked, and when each of the blocks is separated from the connecting rod, the connecting rod is unlocked.

[0007] Further, the locking mechanism includes a guiding mechanism corresponding to each of the clamping blocks. Each guiding mechanism extends along the radial direction of the connecting rod, and each clamping block is slidably connected to the corresponding guiding mechanism.

[0008] Further, the driving mechanism includes an elastic member and an unlocking member. The elastic members correspond to the clamping blocks one by one. The elastic member is used to drive the corresponding clamping block towards the connecting rod, so that the clamping block abuts against the connecting rod. The unlocking member is used to drive each clamping block away from the connecting rod, so that the clamping block is disengaged from the connecting rod.

[0009] Further, the guiding mechanism is a guiding groove. The clamping blocks are correspondingly and slidably arranged in the corresponding guiding grooves. The elastic member is a return spring plate. One end of the return spring plate abuts against the clamping block, and the other end abuts against the guiding groove.

[0010] Further, the unlocking member includes a positioning plate and a magnet. The positioning plate is used to be arranged below the in-situ test platform and the two can approach or separate from each other. The positioning plate is used to support the in-situ test platform. When they abut against each other, magnets for attracting the clamping blocks to displace away from the connecting rod are arranged at positions on the positioning plate opposite to the clamping blocks.

[0011] Further, the positioning plate is provided with a through groove whose cross-sectional area is larger than that of the in-situ test platform. The inner wall of the through groove is provided with support blocks for supporting the in-situ test platform. Each magnet is arranged close to the through groove.

[0012] Further, the unlocking member includes a deep-water motor and a cam sleeved on the output shaft of the deep-water motor. The outer surface of the cam is used to abut against the clamping block. The outer surface of the cam includes a first curve segment and a second curve segment with the same number as the clamping blocks. The first curve segment and the second curve segment are alternately arranged along the circumferential direction of the output shaft of the deep-water motor, and the distance between the high point of the first curve segment and the center of the connecting rod is greater than the distance between the high point of the second curve segment and the center of the connecting rod.

[0013] Further, an annular groove for the clamping block to be inserted into is provided on the circumferential side wall of the connecting rod. The cross-section of the annular groove is in a V-shaped structure. Chamfers are provided on both sides of one end of each clamping block for extending into the annular groove to abut against the groove wall of the annular groove.

[0014] Further, it further includes a connecting plate for connecting with the in-situ test platform. The locking mechanism is arranged on the connecting plate. Through holes for the connecting rod to pass through are provided on both the connecting plate and the in-situ test platform. The diameter of the through hole is larger than that of the connecting rod, and the locking mechanism is arranged close to the through hole.

[0015] The present invention also provides an in-situ test platform, including the in-situ test transducer clutch mechanism as described in any one of the above.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] An in-situ test transducer clutch mechanism of the present invention includes a locking mechanism for arranging on an in-situ test platform to lock and unlock a connecting rod of a transducer. The locking mechanism includes at least two movable blocks and a driving mechanism for driving the movement of each block. The at least two blocks are distributed circumferentially along the connecting rod. When each block abuts against the connecting rod, the connecting rod is locked, and when each block is separated from the connecting rod, the connecting rod is unlocked.

[0018] During use, when the in-situ test platform reaches the surface of the seabed sediment, the transducer continues to penetrate vertically downward into the sediment. After stopping the penetration, the driving mechanism drives at least two blocks to separate from the connecting rod, thereby unlocking the connecting rod. At this time, there is a gap between the block and the connecting rod. Therefore, the transducer and the connecting rod are separated from the in-situ test platform, and the acoustic signal generated by the transducer will not be transmitted to the in-situ test platform; after the test is completed, when the in-situ test platform rises, the driving mechanism drives at least two blocks to abut against the connecting rod, thereby locking the connecting rod, so that the in-situ test platform drives the connecting rod and the transducer to lift.

[0019] With such a setting, the in-situ test transducer clutch mechanism of the present invention can disconnect the connecting rod from the in-situ test platform during the test to avoid the transmission of acoustic signals to the in-situ test platform; after the test is completed, the connecting rod can be connected to the in-situ test platform again, so that the connecting rod and the transducer rise with the in-situ test platform, solving the problem that in the prior art, the acoustic signal will propagate along the connecting rod and the in-situ test platform, resulting in a reduction in the energy of the acoustic signal propagating in the sediment. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1Schematic diagram of the relationship between the in-situ test transducer clutch mechanism in the locked state and the in-situ test platform in the first embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the relationship between the in-situ test transducer clutch mechanism in the unlocked state and the in-situ test platform in the first embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the structure of the locking mechanism in the first embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the process of the locking mechanism converting from the locked state to the unlocked state in the first embodiment of the present invention;

[0025] Figure 5 For Figure 4 Top view of the process schematic diagram shown in

[0026] Figure 6 Schematic diagram of the engagement structure between the connecting rod and the clamping block in the embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the structure of the in-situ test transducer clutch mechanism in the second embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the process of the locking mechanism converting from the locked state to the unlocked state in the second embodiment of the present invention;

[0029] Figure 9 For Figure 8 Top view of the process schematic diagram shown in

[0030] Explanation of reference numerals: 1, in-situ test platform; 2, connecting rod; 3, transducer; 4, clamping block; 5, guiding groove; 6, reset spring plate; 7, positioning plate; 8, magnet; 9, deep-water motor; 10, cam; 11, annular groove; 12, connecting plate; 13, chamfer; 14, bracket. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0033] Embodiment 1:

[0034] As Figures 1-6 shown, the in-situ test transducer clutch mechanism provided in this embodiment includes a locking mechanism for being arranged on the in-situ test platform 1, and the locking mechanism is used for locking and unlocking the connecting rod 2 of the transducer 3. The locking mechanism includes at least two slidable blocks 4 and a driving mechanism for driving the movement of each block 4. For example Figure 5 shown, the number of the blocks 4 is two. All the blocks 4 are distributed along the axial direction of the connecting rod 2. When each block 4 abuts against the connecting rod 2, the connecting rod 2 is locked. When each block 4 is disengaged from the connecting rod 2, the connecting rod 2 is unlocked.

[0035] The specific use process is as follows: When the in-situ test platform 1 is about to reach the surface of the seabed sediment, the transducer 3 continues to penetrate vertically downward into the sediment. After stopping the penetration, the driving mechanism drives at least two blocks 4 to disengage from the connecting rod 2, thereby unlocking the connecting rod 2. At this time, there is a gap between the block 4 and the connecting rod 2. Therefore, the transducer 3 and the connecting rod 2 are disengaged from the in-situ test platform 1, and the acoustic signal generated by the transducer 3 will not be transmitted to the in-situ test platform 1; after the test is completed, when the in-situ test platform 1 rises, the driving mechanism drives at least two blocks 4 to abut against the connecting rod 2, thereby locking the connecting rod 2, so that the in-situ test platform 1 drives the connecting rod 2 and the transducer 3 to be lifted.

[0036] With such a setting, the in-situ test transducer clutch mechanism of the embodiment of the present invention can disconnect the connecting rod 2 from the in-situ test platform 1 during the test, avoiding the transmission of the acoustic signal to the in-situ test platform 1; after the test is completed, the connecting rod 2 can be connected to the in-situ test platform 1 again, so that the connecting rod 2 and the transducer 3 rise with the in-situ test platform 1, solving the problem in the prior art that the acoustic signal will propagate along the connecting rod 2 and the in-situ test platform 1, resulting in a reduction in the energy of the acoustic signal propagating in the sediment.

[0037] In this embodiment, the locking mechanism includes a guiding mechanism corresponding to each block 4 one by one. Each guiding mechanism extends along the radial direction of the connecting rod 2, and each block 4 is respectively slidably connected to the corresponding guiding mechanism. The driving mechanism drives the block 4 to slide along the guiding mechanism to abut against or release the connecting rod 2. With such a setting, the structure of the locking mechanism can be simplified, and the conversion between the locked state and the unlocked state is realized by the sliding of the block, which is more convenient to use.

[0038] In this embodiment, the driving mechanism includes an elastic member and an unlocking member. The elastic members correspond to the clamping blocks 4 one by one. The elastic member is used to drive the corresponding clamping block 4 towards the connecting rod 2, so that the clamping block 4 abuts against the connecting rod 2. The unlocking member is used to drive each clamping block 4 away from the connecting rod 2, so that the clamping block 4 is disengaged from the connecting rod 2. With such a setting, when it is necessary to unlock the connecting rod 2, only need to make the unlocking member drive the clamping block 4 to move away from the connecting rod 2 and make the elastic member elastically deformed; when it is necessary to lock the connecting rod 2, only need to make the unlocking member release the clamping block 4, then under the action of the elastic member, the clamping block 4 will re-abut against the connecting rod 2 tightly.

[0039] In this embodiment, the guiding mechanism is a guiding groove 5. As Figures 3-5 shown, the guiding groove 5 can be formed by a block structure. Specifically, the block structure is provided with a sliding groove, and the guiding groove 5 can be formed by inverting one side of the block structure provided with the sliding groove. The clamping blocks 4 are correspondingly and slidably arranged in the corresponding guiding grooves 5. The elastic member is a return spring piece 6. As Figure 5 shown, one end of the return spring piece 6 abuts against the clamping block 4, and the other end abuts against the end of the guiding groove 5 far from the connecting rod 2 to generate a thrust force that pushes the clamping block 4 towards the connecting rod 2.

[0040] As Figures 1-6 shown, in this embodiment, the unlocking member includes a positioning plate 7 and a magnet 8. The positioning plate 7 is used to be arranged below the in-situ test platform 1, and the two can approach or separate from each other. The positioning plate 7 is used to support the in-situ test platform 1, and when the two abut against each other, a magnet 8 for attracting the clamping block 4 to displace away from the connecting rod 2 is provided at a position on the positioning plate 7 opposite to the clamping block 4. The magnet 8 can be a permanent magnet 8. Thus, during use, the positioning plate 7 is first placed on the surface of the seabed sediment. When the in-situ test platform 1 is about to reach the surface of the seabed sediment, the transducer 3 continues to penetrate downward into the sediment. When the in-situ test platform 1 abuts against the positioning plate 7, the positioning plate 7 makes the in-situ test platform 1 and the transducer 3 unable to move downward any further. At this time, under the magnetic force of the permanent magnet 8, the clamping block 4 displaces away from the connecting rod 2, unlocks the connecting rod 2, and generates a gap between the clamping block 4 and the connecting rod 2, that is, makes the transducer 3 completely disengage from the in-situ test platform 1. After the test is completed, when the in-situ test platform 1 is lifted, the clamping block 4 is no longer affected by the magnetic force of the permanent magnet 8, and re-clamps the connecting rod 2 under the action of the elastic member to drive the connecting rod 2 and the transducer 3 to rise.

[0041] Refer to Figures 1-2 shown, in this embodiment, the positioning plate 7 is provided with a through groove with a cross-sectional area larger than that of the in-situ test platform 1, and a support block for supporting the in-situ test platform 1 is provided on the inner wall of the through groove. Each magnet 8 is arranged at a position close to the through groove.

[0042] Refer to Figure 6As shown, in this embodiment, an annular groove 11 for the clamping block 4 to extend into is provided on the circumferential side wall of the connecting rod 2, and the cross-section of the annular groove 11 is a V-shaped structure. At one end of each clamping block 4 for extending into the annular groove 11, chamfers 13 are provided on both sides of its edge for abutting against the groove wall of the annular groove 11. With such a setting, the chamfers 13 on the clamping block 4 fitting with the groove wall of the annular groove 11 can provide a more reliable clamping force for the connecting rod 2, preventing the connecting rod 2 in the locked state from axially moving, so as to maintain the stability of the connecting rod.

[0043] In this embodiment, the in-situ test transducer clutch mechanism further includes a connecting plate 12. The connecting plate 12 is used to connect with the in-situ test platform 1, and the locking mechanism is arranged on the connecting plate 12. Through holes for the connecting rod 2 to pass through are provided on both the connecting plate 12 and the in-situ test platform 1. The diameter of the through hole is larger than the diameter of the connecting rod 2, and the locking mechanism is arranged close to the through hole. By providing the connecting plate 12, the portability of the in-situ test transducer clutch mechanism is stronger, that is, the in-situ test transducer clutch mechanism can be more conveniently installed on different types of in-situ test platforms 1 through the connecting plate 12, enabling the in-situ test transducer clutch mechanism to have a wider application scenario.

[0044] Reference Figures 7-9 , the second embodiment provided by the present invention is different from the first embodiment. In this embodiment, the unlocking member includes a deep-water motor 9 and a cam 10 sleeved on the output shaft of the deep-water motor 9. The deep-water motor 9 can be connected to the connecting plate 12 or the in-situ test platform 1 or the block structure through the bracket 14. The outer surface of the cam 10 is used to abut against the clamping block 4. The outer surface of the cam 10 includes a first curve segment with the same number as the clamping block 4 and a second curve segment with the same number as the clamping block 4. The first curve segment and the second curve segment are alternately arranged along the circumferential direction of the output shaft of the deep-water motor 9, and the distance between the high point of the first curve segment and the center of the connecting rod 2 is greater than the distance between the high point of the second curve segment and the center of the connecting rod 2. Reference Figure 9 As shown, the number of both the first curve segment and the second curve segment is two. When the first curve segment abuts against the corresponding clamping block 4, it can displace the clamping block 4 in a direction away from the connecting rod 2, that is, unlock the connecting rod 2; when the second curve segment abuts against the corresponding clamping block 4, it can displace the clamping block 4 in a direction close to the connecting rod 2, that is, lock the connecting rod 2.

[0045] The embodiment of the present invention also provides an in-situ test platform, including the in-situ test transducer clutch mechanism described in any one of the above. It should be noted that the in-situ test platform includes the in-situ test transducer clutch mechanism and has all its advantages, which will not be elaborated here.

[0046] In this specification, specific examples are used to illustrate the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An in-situ test transducer clutch mechanism, characterized in that It includes a locking mechanism for setting on an in-situ test platform to lock and unlock a connecting rod of a transducer. The locking mechanism includes at least two movable blocks and a driving mechanism for driving the movement of each of the blocks. The at least two blocks are circumferentially distributed along the connecting rod. An annular groove for the blocks to snap into is provided on the circumferential side wall of the connecting rod. When each block abuts against the connecting rod, the connecting rod is locked. During testing, each block can be separated from the connecting rod to unlock the connecting rod. The driving mechanism includes an unlocking member for driving each block in a direction away from the connecting rod so that the block is separated from the connecting rod. The unlocking member includes a positioning plate and a magnet. The positioning plate is used to be arranged below the in-situ test platform and the two can approach or move away from each other; the positioning plate is used to support the in-situ test platform, and when they abut against each other, magnets for attracting the blocks to displace in a direction away from the connecting rod are provided at positions on the positioning plate opposite to the blocks.

2. The in-situ test transducer clutch mechanism according to claim 1, wherein The locking mechanism includes a guiding mechanism corresponding to each block one by one. Each guiding mechanism extends along the radial direction of the connecting rod, and each block is slidably connected to the corresponding guiding mechanism.

3. The in-situ test transducer clutch mechanism according to claim 2, characterized in that, The driving mechanism includes an elastic member corresponding to each block one by one. The elastic member is used to drive the corresponding block in a direction close to the connecting rod so that the block abuts against the connecting rod.

4. The in-situ test transducer clutch mechanism according to claim 3, characterized in that The guiding mechanism is a guiding groove. The blocks are arranged in the corresponding guiding grooves one by one and slidably. The elastic member is a return spring piece. One end of the return spring piece abuts against the block, and the other end abuts against the guiding groove.

5. The in-situ test transducer clutch mechanism according to claim 1, characterized in that, The positioning plate is provided with a through groove whose cross-sectional area is larger than the cross-sectional area of the in-situ test platform. Support blocks for supporting the in-situ test platform are provided on the inner wall of the through groove, and each magnet is arranged near the through groove.

6. The in-situ test transducer clutch mechanism according to claim 3, characterized in that The unlocking member includes a deep-water motor and a cam sleeved on the output shaft of the deep-water motor. The outer surface of the cam is used to abut against the block. The outer surface of the cam includes a first curve segment and a second curve segment with the same number as the blocks. The first curve segment and the second curve segment are alternately arranged along the circumferential direction of the output shaft of the deep-water motor, and the distance between the high point of the first curve segment and the center of the connecting rod is greater than the distance between the high point of the second curve segment and the center of the connecting rod.

7. The in-situ test transducer clutch mechanism according to claim 1, characterized in that The cross-section of the annular groove is in a V-shaped structure; chamfers are provided on both sides of the end of each block for extending into the annular groove for abutting against the groove wall of the annular groove.

8. The in-situ test transducer clutch mechanism according to claim 1, characterized in that It further includes a connecting plate for connecting with the in-situ test platform. The locking mechanism is arranged on the connecting plate. Through holes for the connecting rod to pass through are provided on both the connecting plate and the in-situ test platform. The diameter of the through hole is larger than the diameter of the connecting rod, and the locking mechanism is arranged close to the through hole.

9. An in-situ test platform, characterized in that, It includes an in-situ test transducer clutch mechanism according to any one of claims 1-8.

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