A hollow ram hammer for use in sampling subsea structures and a method of operation

Abstract

The application discloses a hollow rammer for sampling and detecting seabed structure and an operating method, relates to the technical field of hollow rammers, and comprises a bottom cover, a shell is arranged on the top of the bottom cover, a supporting assembly is arranged on the outer side of the shell, and the supporting assembly is used for providing stable support for the shell. When the hollow rammer works, the supporting assembly rebounds by generating a reaction force with the seabed. The supporting assembly is used for inserting the inserting rod into the ground, and the guiding effect of the movable ring and the guide rod is used for limiting deviation of the hollow rammer, so that the hollow rammer can only move vertically up and down, and the stability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hollow ramming hammer, in particular to a hollow ramming hammer for seabed structure sampling and detection and an operation method thereof. BACKGROUND

[0002] The hollow ramming hammer is a commonly used device in engineering construction and geological exploration. The hammer head is driven by liquid to rapidly impact and drop, generating impact force. The impact force is transmitted to the sampling pipe, so that the sampling pipe drills into the seabed. Through sampling, information of the seabed ground or foundation engineering work is obtained. Therefore, the traditional device is not perfect. There is no facility for preventing rebound of the hollow ramming hammer during work and guiding and limiting the hollow ramming hammer. The hollow ramming hammer is easy to deviate during rebounding. The sampling position deviates. The hollow ramming hammer for seabed structure sampling and detection and the operation method thereof can provide convenience for workers.

[0003] The existing hollow ramming hammer has the following defects:

[0004] 1. US8994527B2 discloses a seabed sampling device and method. The disclosed seabed sampling device and method mainly consider how to make the device simple and relatively small in size, and reduce the manufacturing and exploration cost. The problem of conveniently supporting and limiting the hollow ramming hammer is not considered, which reduces the stability of the sampling process.

[0005] 2. US7690252B2 discloses a seabed sampler. The disclosed seabed sampler mainly considers how to be used for rising and falling in the liquid in the box and for measuring the fluid depth at the seabed sampler position. The problem of conveniently adjusting the position on the seabed is not considered, which reduces the precision of the collection position.

[0006] 3. CN105064363A discloses a deep-sea underwater powerful hammer. The disclosed seabed sampler mainly considers that a fully enclosed shell is adopted, which can realize impact operation in deep-sea underwater. The function is relatively single. The seabed structure sampling is generally only matched with the deep-sea seabed structure sampling to increase the sampling depth. The problem of cleaning the seabed surface of the sampling position is not considered, which reduces the sampling standard.

[0007] 4. CN108844768A discloses a deep-sea ramming hammer with built-in pullable bidirectional buffer. The disclosed deep-sea ramming hammer with built-in pullable bidirectional buffer mainly considers how to adopt a fully enclosed shell to improve the durability and the convenience of maintenance. The problem of conveniently understanding the depth of the sampling pipe into the seabed is not considered, which reduces the practicality. SUMMARY

[0008] The hollow rammer for sampling and detecting seabed structure and the operation method aim to solve the problems in the background art.

[0009] To achieve the above object, the present application provides the following technical scheme: a hollow rammer for sampling and detecting seabed structure and the operation method, comprising a bottom cover, a shell mounted on the top of the bottom cover, and a support assembly arranged on the outer side of the shell for providing stable support for the shell.

[0010] The support assembly comprises four groups of fixed plates, each group having two fixed plates, and the fixed plates are mounted on the outer side of the shell; one end of each group of the fixed plates is provided with a same guide rod; the outer side of the four guide rods is sleeved with a same movable ring; the bottom of the movable ring is provided with four connecting plates; one end of the connecting plates is provided with a guide pipe; the inner side of the guide pipe is placed with a round rod; the bottom of the round rod is provided with a flat plate; and the bottom of the flat plate is provided with four insertion rods.

[0011] Preferably, the top of the shell is provided with a top cover, a hollow pipe is arranged through the inside of the bottom cover and the top cover, an oil tank is arranged on the inner side of the shell, a power system is arranged on the top of the oil tank, a double hydraulic cylinder is arranged through the inside of the oil tank, a double hammer rod is arranged through the inside of the double hydraulic cylinder, a hollow hammer head is arranged on the bottom of the double hammer rod, the oil tank, the power system, the double hydraulic cylinder, the double hammer rod and the hollow hammer head are arranged on the outer side of the hollow pipe, a sampling pipe is arranged on the bottom of the bottom cover, a piston is arranged on the inner side of the sampling pipe, a steel cable is arranged on the top of the piston, the steel cable passes through the inner side of the hollow pipe, a cleaning assembly and an observation assembly are arranged on the front of the shell, the cleaning assembly is used for cleaning impurities on the seabed surface, and the observation assembly is used for observing the depth of the bottom end tamped downward.

[0012] Preferably, reinforcing ribs are arranged on the two sides of the fixed plate, and a baffle is arranged on the top of the round rod to prevent the round rod from falling through the guide pipe.

[0013] Preferably, the cleaning assembly comprises a frame, the frame is arranged on the front of the shell, a motor is arranged on the front of the frame, an extension rod is arranged on the output end of the motor, the extension rod passes through the inside of the movable ring, a support ring is sleeved with the outer side of the extension rod through a bearing, the support ring is arranged on the front of the frame, a sharp rod is arranged on the output end of the extension rod, a plug hole is arranged through the inside of the output end of the extension rod, an arc plate is placed on the inner side of the plug hole, two bolts are arranged through the inside of the arc plate in a threaded manner, and the bolts are arranged through the inside of the arc plate, and an inclined plate is arranged on the bottom of the arc plate.

[0014] Preferably, the observation assembly comprises a tape measure, and the tape measure is installed on the front of the shell and located at one side of the motor, one end of the tape measure is installed on the top of the movable ring, the front of the shell is provided with an observation box, a through hole is formed in the observation box, the through hole is located at the outer side of the tape measure, limit plates are installed on the inner walls of the through hole, one thin plate is installed on the middle of the two limit plates, a camera is installed on the back inner wall of the through hole, an inclined slot is formed in the back inner wall of the through hole and located at the bottom of the camera, a glass is installed on the inner side of the inclined slot, a lighting lamp is installed on the back inner wall of the inclined slot, and a battery pack is installed in the observation box and used to supply power to the lighting lamp and the camera.

[0015] Preferably, the top of the top cover is provided with a moving assembly for convenient movement in the sea, the moving assembly comprises an L-shaped ring installed on the top of the top cover, a plurality of teeth are installed on the outer side of the L-shaped ring, an L-shaped inner ring is placed on the inner side of the L-shaped ring, a ring plate is installed on the top of the L-shaped inner ring, a rubbing-proof tube is installed on the top of the ring plate and located at the outer side of the steel cable, two propellers are installed on the top of the ring plate, a motor is installed on the top of the ring plate and located between the two propellers, the output end of the motor penetrates the inside of the ring plate through a bearing, a gear is sleeved on the outer side of the output end of the motor and located at the bottom of the ring plate, and the gear is engaged with the teeth.

[0016] Preferably, the operation method of the hollow rammer is as follows:

[0017] S1, first, the worker hoists the hollow rammer by an external hoisting device, and makes the bottom cover face the seabed to sink the hollow rammer into the sea, and then slowly releases the rope of the hoisting device to gradually move the bottom cover to the seabed position to be sampled;

[0018] S2, then, the worker detects the falling position corresponding to the bottom cover, and when the position is inaccurate, the worker starts the motor to drive the ring plate to rotate, and makes the two output ends of the propellers deviate from the direction of the bottom cover, and then starts the two propellers to move the hollow rammer above the seabed to be sampled;

[0019] S3, when there are impurities on the seabed surface which are not needed to be sampled, the worker starts the telescopic rod to extend and drives the sharp rod to insert into the seabed, starts the motor to drive the telescopic rod to rotate clockwise, and the telescopic rod drives the arc plate box and the inclined plate to rotate to clean the impurities and expose the seabed surface to be sampled;

[0020] S4, when the bottom cover contacts the seabed surface, the insertion rod also moves towards the ground under the action of gravity, if the hollow rammer moves horizontally, the insertion rod is inserted obliquely into the seabed to limit the movement of the insertion rod, and the movement of the shell in the horizontal direction is limited by the insertion rod, so that the bottom cover samples the same position;

[0021] S5, through the power system control double hydraulic cylinder work, make double hydraulic cylinder drive double hammer rod move up and down, double hammer rod drive hollow hammer head move up and down, hollow hammer head is beaten to the bottom cover, the bottom cover transmits force to the sampling tube, make the sampling tube under the action of external force into the seabed, then through the cable drive piston moves up and down and pulls to sample;

[0022] S6, when hollow rammer is working, it will drive the sampling tube to move down and insert into the seabed through the bottom cover, start the camera and the light, the light passes through the glass and shines on the shadow plate, the shadow projection is observed on the scale position of the steel ruler through the camera, and the depth of the sampling tube into the seabed is understood.

[0023] Preferably, in the step S4, the following steps are further included:

[0024] S41, since the hollow rammer is deep into the seabed and works, the hollow rammer generates a reaction force with the seabed to drive the shell to move vertically, so that the shell moves up and down along the inner side of the movable ring, the shell drives the guide rod to move through the fixed plate, and the movable ring guides the shell to move up and down along the direction perpendicular to the seabed by the guiding action of the guide rod, so that the shell is prevented from moving horizontally during the up and down movement.

[0025] Compared with the prior art, the beneficial effects of the present application are:

[0026] 1, the supporting assembly is installed, when the hollow rammer works and generates a reaction force with the seabed to rebound, the supporting assembly inserts the inserting rod into the ground, and the guiding action of the movable ring and the guide rod limits the deviation of the hollow rammer, so that the hollow rammer can only move vertically up and down, and the stability is improved.

[0027] 2, the motor is installed, when the position is not accurate, the staff starts the motor, the motor drives the gear on the outside to rotate around itself, the gear rotates and drives the gear to move by the meshing action of the gear teeth, the gear rotates around the hollow pipe along the outside of the gear teeth under the action of the motor, the motor moves through the motor output end, the motor drives the ring plate to rotate, the ring plate drives the L inner ring to rotate along the inside of the L ring under the support of the L ring, the ring plate drives the two thrusters to rotate, the two output ends of the thrusters deviate from the bottom cover, the two thrusters are started, the two thrusters drive the hollow rammer to move to the seabed position where sampling is needed, and the hollow rammer is moved above the seabed where sampling is needed.

[0028] 3、The hollow rammer is driven by the bottom cover to move downwards and insert the sampling tube into the seabed when working, the movable ring is fixed, the shell moves downwards along the inner side of the fixed ring, the shell drives the box of the tape measure to move downwards, the steel ruler of the tape measure is gradually stored in the box, the staff starts the camera and the illuminating lamp, the illuminating lamp emits light under the power support of the battery pack, the light shines on the sheet through the glass and generates a shadow, the shadow is projected on the steel ruler surface, the staff can know the depth of the sampling tube into the seabed by observing the shadow projection on the scale position of the steel ruler.

[0029] 4、When there is impurity on the seabed surface which does not need to be sampled, the staff extends the telescopic rod, the output end of the telescopic rod drives the sharp rod to move downwards, the sharp rod is inserted into the seabed, the staff continues to extend the telescopic rod, the inclined plate is inserted into the impurity layer on the seabed surface, then the staff starts the motor, the motor rotates clockwise under the support of the frame, the telescopic rod rotates around itself under the support of the support ring and the bearing, the telescopic rod drives the arc plate to rotate around the sharp rod under the support of the insertion hole, the arc plate drives the inclined plate to rotate clockwise, the inclined plate moves the impurity on the seabed surface under the support of the arc plate, the impurity moves along the arc surface of the arc plate, and the impurity is moved to outside of the circle with the sharp rod as the center and the straight line length of the inclined plate as the radius, so that the seabed surface which needs to be sampled is exposed. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the overall structure schematic diagram of the present application;

[0031] Figure 2 It is the shell cross-section structure schematic diagram of the present application;

[0032] Figure 3 It is the support assembly three-dimensional structure schematic diagram of the present application;

[0033] Figure 4 It is the cleaning assembly structure schematic diagram of the present application;

[0034] Figure 5 It is the sharp rod cross-section structure schematic diagram of the present application;

[0035] Figure 6 It is the inclined plate cross-section structure schematic diagram of the present application;

[0036] Figure 7 It is the observation box cross-section structure schematic diagram of the present application;

[0037] Figure 8 It is the ring plate cross-section structure schematic diagram of the present application;

[0038] Figure 9 It is the flow chart of the present application.

[0039] In the figure: 1, bottom cover; 2, shell; 3, top cover; 4, hollow tube; 5, oil tank; 6, power system; 7, double hydraulic cylinder; 8, double hammer rod; 9, hollow hammer head; 10, sampling pipe; 11, piston; 12, steel cable; 13, fixed plate; 14, reinforcing rib; 15, guide rod; 16, movable ring; 17, connecting plate; 18, guide pipe; 19, round rod; 20, baffle; 21, flat plate; 22, insertion rod; 23, rack; 24, motor; 25, support ring; 26, telescopic rod; 27, pointed rod; 28, insertion hole; 29, arc plate; 30, bolt; 31, inclined plate; 32, tape measure; 33, observation box; 34, through hole; 35, limiting plate; 36, thin plate; 37, camera; 38, inclined chute; 39, glass; 40, illuminating lamp; 41, battery pack; 42, L ring; 43, rodent; 44, L inner ring; 45, ring plate; 46, anti-friction tube; 47, propeller; 48, motor; 49, gear. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the devices or elements indicated or implied to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" is fixed connection, or detachable connection, or integrally connected; is mechanical connection, or electrical connection; is directly connected, or indirectly connected through an intermediate medium; is the connection between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application should be understood according to the specific circumstances.

[0043] Please refer to Figure 1 , Figure 2The application provides a hollow rammer for seabed structure sampling and detection and an operation method, which comprises a bottom cover 1, a shell 2 arranged on the top of the bottom cover 1, a top cover 3 arranged on the top of the shell 2, a hollow pipe 4 arranged through the inside of the bottom cover 1 and the top cover 3, the bottom cover 1 can provide stable support for all facilities on the top of the bottom cover 1, the bottom cover 1 and the top cover 3 can provide through space for the hollow pipe 4, the hollow pipe 4 can be used for passing through facilities such as a steel cable and a pipeline, and other exploration devices can be carried on the hollow part, an oil tank 5 is arranged on the inner side of the shell 2, a power system 6 is arranged on the top of the oil tank 5, double hydraulic cylinders 7 are arranged through the inside of the oil tank 5, double hammer rods 8 are arranged through the inside of the double hydraulic cylinders 7, hollow hammer heads 9 are arranged on the bottom of the double hammer rods 8, the oil tank 5, the power system 6, the double hydraulic cylinders 7, the double hammer rods 8 and the hollow hammer heads 9 are located on the outer side of the hollow pipe 4, the shell 2 can provide stable support for the oil tank 5, the oil tank 5 and the power system 6 can provide driving force for the double hydraulic cylinders 7, the double hydraulic cylinders 7 can provide power for the double hammer rods 8, so that the double hammer rods 8 drive the hollow hammer heads 9 to move up and down, a sampling pipe 10 is arranged on the bottom of the bottom cover 1, a piston 11 is arranged on the inner side of the sampling pipe 10, and a steel cable 12 is arranged on the top of the piston 11 and penetrates through the inner side of the hollow pipe 4.

[0044] The hollow rammer is lifted by a lifting device outside, the bottom cover 1 is directed to the seabed, and the hollow rammer is sunk into the sea, the lifting device slowly releases the rope, the bottom cover 1 gradually approaches the seabed position to be sampled, the power system 6 controls the double hydraulic cylinders 7 to work, the double hydraulic cylinders 7 drive the double hammer rods 8 to move up and down, the double hammer rods 8 drive the hollow hammer heads 9 to move up and down, the hollow hammer heads 9 are hammered downward to the bottom cover 1, the bottom cover 1 transmits force to the sampling pipe 10, the sampling pipe 10 is deeply inserted into the seabed under the action of external force, and then the piston 11 is driven upward by the steel cable 12 to pull and sample.

[0045] Please refer to Figure 1 , Figure 3The application provides a hollow rammer for seabed structure sampling and an operation method, which comprises a support assembly, the support assembly comprises four groups of fixed plates 13, each group has two fixed plates 13, and the fixed plates 13 are installed on the outer side of a shell 2; one end of each group of fixed plates 13 is provided with a same guide rod 15; the outer side of the four guide rods 15 is sleeved with a same movable ring 16; the bottom of the movable ring 16 is provided with four connecting plates 17; the shell 2 can provide stable support for the fixed plates 13; the fixed plates 13 can provide stable support for the guide rods 15; the guide rods 15 can provide a guiding effect for the movable ring 16, so that the movable ring 16 moves up and down along the direction of the guide rods 15; one end of the connecting plate 17 is provided with a guide pipe 18; the inner side of the guide pipe 18 is placed with a round rod 19; the bottom of the round rod 19 is provided with a flat plate 21; the bottom of the flat plate 21 is provided with four inserting rods 22; the connecting plate 17 can provide stable support for the guide pipe 18; the guide pipe 18 can provide a guiding effect for the round rod 19, so that the support assembly can be conveniently placed on the uneven seabed; the two sides of the fixed plate 13 are provided with reinforcing ribs 14; the reinforcing ribs 14 can provide stable support for the fixed plates 13, so that the fixed plates 13 are prevented from deforming or even breaking; the top of the round rod 19 is provided with a baffle 20, so that the round rod 19 is prevented from penetrating through the guide pipe 18 and falling off.

[0046] When the bottom cover 1 is in contact with the seabed surface, the inserting rod 22 also moves towards the ground under the action of gravity; if the ground is uneven, the inserting rod 22 generates an upward reaction force through contact with the more protruding ground, so that the inserting rod 22 drives the flat plate 21 to move upwards, the flat plate 21 drives the round rod 19 to move upwards along the inner side of the guide pipe 18, and the moving distance is the height of the protruding ground; in the same way, the inserting rod 22 drives the round rod 19 to move downwards through the flat plate 21 by contact with the more concave ground, and the moving distance is the depth of the concave ground; the hollow rammer rebounds when working with the seabed; if the hollow rammer moves horizontally, the shell 2 drives the guide rod 15 to move through the fixed plate 13, so that the guide rod 15 drives the guide pipe 18 to move through the movable ring 16 and the connecting plate 17, the guide pipe 18 drives the inserting rod 22 to move horizontally through the round rod 19 and the flat plate 21, so that the inserting rod 22 is inserted obliquely into the seabed, thereby limiting the movement of the inserting rod 22, the movement of the shell 2 in the horizontal direction is limited through the inserting rod 22, so that the bottom cover 1 can be used for sampling work at the same position; since the hollow rammer works deep into the seabed, the hollow rammer drives the shell 2 to move in the vertical direction when working with the seabed, so that the shell 2 moves up and down along the inner side of the movable ring 16, the shell 2 drives the guide rod 15 to move through the fixed plate 13, and the movable ring 16 guides the shell 2 to move up and down along the direction perpendicular to the seabed through the guiding effect of the guide rod 15, so that the shell 2 is prevented from moving horizontally in the process of moving up and down.

[0047] Please refer to Figure 1 , Figure 4 , Figure 5 andFigure 6 The application provides a hollow rammer hammer for seabed structure sampling and detection and an operation method, which comprises a cleaning assembly, the cleaning assembly comprises a rack 23, the rack 23 is installed on the front face of a shell 2, a motor 24 is installed on the front face of the rack 23, an output end of the motor 24 is provided with an extension rod 26, the extension rod 26 penetrates through the inside of a movable ring 16, a support ring 25 is sleeved with the extension rod 26 through bearings, the support ring 25 is installed on the front face of the rack 23, the shell 2 can provide stable support for the rack 23, the rack 23 can provide stable support for the motor 24, the motor 24 can provide rotating power for the extension rod 26, the support ring 25 can provide rotating support for the extension rod 26 through bearings, the stability of the extension rod 26 during rotation is improved, a pointed rod 27 is installed at the output end of the extension rod 26, the extension rod 26 can provide stable support for the pointed rod 27, the extension rod 26 drives the pointed rod 27 to rotate, the pointed rod 27 is conveniently deep into the ground, a plug hole 28 is formed in the inside of the output end of the extension rod 26, an arc plate 29 is arranged on the inside of the plug hole 28, two bolts 30 are installed in the inside of the extension rod 26 in a threaded mode and penetrate through the inside of the arc plate 29, an inclined plate 31 is installed at the bottom of the arc plate 29, the extension rod 26 can provide a space for the plug hole 28, the plug hole 28 can provide a penetrating space for the arc plate 29, the arc plate 29 can provide stable support for the inclined plate 31, the arc plate 29 is made of steel and has high hardness, can stably drive the inclined plate 31 to rotate, and the inclined plate 31 can conveniently enter the ground by using the inclined surface thereof.

[0048] When impurities that do not need to be sampled exist on the seabed surface, an operator extends the extension rod 26, moves the output end of the extension rod 26 downward to insert the pointed rod 27 into the seabed, continues to extend the extension rod 26, inserts the inclined plate 31 into the impurity layer on the seabed surface, then the operator starts the motor 24, the motor 24 rotates the extension rod 26 clockwise under the support of the rack 23, the extension rod 26 rotates around itself under the support of the support ring 25 and the bearings, the extension rod 26 drives the arc plate 29 to rotate around the pointed rod 27 through the plug hole 28, the arc plate 29 drives the inclined plate 31 to rotate clockwise, the inclined plate 31 moves the impurities on the seabed surface under the support of the arc plate 29, the impurities move along the arc surface of the arc plate 29, and the impurities are moved to outside a circle with the pointed rod 27 as the center and the straight line length of the inclined plate 31 as the radius, so that the seabed surface that needs to be sampled is exposed.

[0049] Please refer to Figure 1 and Figure 7An embodiment of the present application provides a hollow rammer for seabed structure sampling and detection and an operation method, which comprises an observation assembly, the observation assembly comprises a tape measure 32, the tape measure 32 is installed on the front surface of a shell 2, the tape measure 32 is located on one side of a motor 24, one end of the tape measure 32 is installed on the top of a movable ring 16, an observation box 33 is installed on the front surface of the shell 2, a through hole 34 is formed in the observation box 33, the through hole 34 is located on the outer side of the tape measure 32, limit plates 35 are installed on the inner walls of the two sides of the through hole 34, the shell 2 can provide stable support for the tape measure 32, the shell 2 can provide stable support for the observation box 33, the observation box 33 can provide a space for the through hole 34, the through hole 34 can provide a space for the tape measure 32, the limit plates 35 can limit the tape measure 32, so that the tape measure 32 is in a straight line state, the same thin plate 36 is installed on the positions close to the middle of the two limit plates 35, a camera 37 is installed on the back inner wall of the through hole 34, an inclined groove 38 is formed in the back inner wall of the through hole 34, the inclined groove 38 is located at the bottom of the camera 37, a glass 39 is installed on the inner side of the inclined groove 38, a lighting lamp 40 is installed on the back inner wall of the inclined groove 38, a battery pack 41 is installed in the observation box 33, and the battery pack 41 is used for supplying power for the lighting lamp 40 and the camera 37.

[0050] When the hollow rammer works, the sampling pipe 10 is inserted into the seabed by the bottom cover 1, at this time, the movable ring 16 is fixed, the shell 2 moves downwards along the inner side of the movable ring 16, the shell 2 drives the box of the tape measure 32 to move downwards, the steel ruler of the tape measure 32 is gradually stored in the box of the tape measure 32, the staff starts the camera 37 and the lighting lamp 40, the lighting lamp 40 emits light under the power support of the battery pack 41, the light passes through the glass 39 and shines on the thin plate 36 to generate a shadow, the shadow is projected on the steel ruler surface of the tape measure 32, since the side of the steel ruler surface towards the lighting lamp 40 is provided with a scale, the staff can master the descending depth of the shell 2 by observing the shadow projection on the scale position of the steel ruler through the camera 37, and the staff can conveniently know the depth of the sampling pipe 10 into the seabed.

[0051] Please refer to Figure 1 , Figure 8The application provides a hollow rammer hammer for seabed structure sampling and detection and an operation method, which comprises a moving assembly, the moving assembly comprises an L ring 42, the L ring 42 is arranged on the top of a top cover 2, a plurality of teeth 43 are arranged on the outer side of the L ring 42, an L inner ring 44 is arranged on the inner side of the L ring 42, a ring plate 45 is arranged on the top of the L inner ring 44, the top cover 3 can provide stable support for the L ring 42, the L ring 42 can provide stable support for the teeth 43, the L ring 42 can provide a placing space for the L inner ring 44, the L ring 42 can provide a rotating space for the L inner ring 44, a wear-resistant tube 46 is arranged on the top of the ring plate 45 and located on the outer side of a steel cable 12, the wear-resistant tube 46 is used for preventing the steel cable 12 from being disconnected due to friction with the ring plate 45, two propellers 47 are arranged on the top of the ring plate 45, a motor 48 is arranged on the top of the ring plate 45 and located between the two propellers 47, the output end of the motor 48 penetrates through the inside of the ring plate 45 through a bearing, a gear 49 is sleeved on the outer side of the output end of the motor 48 and located on the bottom of the ring plate 45, the gear 49 is engaged with the teeth 43, the ring plate 45 can provide stable support for the propellers 47, the propellers 47 can move by using seawater as power, the ring plate 45 can provide stable support for the motor 48, the ring plate 45 provides rotating support for the output end of the motor 48 through the bearing, and the motor 48 can provide rotating power for the gear 49.

[0052] When the position is inaccurate, a worker starts the motor 48, so that the motor 48 drives the gear 49 on the outer side to rotate around the gear 49 as the center, the gear 49 rotates and drives the gear 49 to move by the meshing action of the gear 49 and the teeth 43, the gear 49 drives the motor 48 to move through the output end of the motor 48, the motor drives the ring plate 45 to rotate, the ring plate 45 drives the L inner ring 44 to rotate along the inner side of the L ring 42 under the support of the L ring 42, the ring plate 45 drives the two propellers 47 to rotate, the two output ends of the propellers 47 deviate from the bottom cover 1 in a direction, the two propellers 47 are started, the two propellers 47 drive the hollow rammer hammer to move to the seabed position needing sampling, and the hollow rammer hammer is moved above the seabed needing sampling.

[0053] Further, the operation method of the hollow rammer hammer is as follows:

[0054] S1, first, a worker lifts the hollow rammer hammer through an external lifting device, the bottom cover 1 is directed to the seabed, the hollow rammer hammer is sunk into the sea, the lifting device is slowly released, and the bottom cover 1 gradually approaches the seabed position needing sampling;

[0055] S2, the staff detects the corresponding falling position of the bottom cover 2, when the position is not accurate, the staff starts the motor 48 to drive the ring plate 45 to rotate, the two output ends of the pusher 47 are deviated from the direction of the bottom cover 1, and the two pushers 47 are started, so that the hollow rammer is moved above the seabed which needs to be sampled;

[0056] S3, when the seabed surface exists impurities which do not need to be sampled, the staff starts the telescopic rod 26 to extend to drive the sharp rod 27 to insert into the seabed, and starts the motor 24 to drive the telescopic rod 26 to rotate clockwise, so that the telescopic rod 26 drives the arc plate 29 box and the inclined plate 31 to rotate, the impurities are cleaned, and the seabed surface which needs to be sampled is exposed;

[0057] S4, when the bottom cover 1 contacts with the seabed surface, the insertion rod 22 also moves to the ground under the action of gravity, if the hollow rammer moves horizontally, the insertion rod 22 is inserted into the seabed obliquely, so as to limit the movement of the insertion rod 22, the horizontal movement of the shell 2 is limited through the insertion rod 22, and the bottom cover 1 samples the same position;

[0058] S5, the power system 6 controls the work of the double hydraulic cylinders 7, so that the double hydraulic cylinders 7 drive the double hammer rods 8 to move up and down, the double hammer rods 8 drive the hollow hammer head 9 to move up and down, the hollow hammer head 9 is hammered downward to the bottom cover 1, the bottom cover 1 transmits the force to the sampling pipe 10, so that the sampling pipe 10 is deeply inserted into the seabed under the action of the external force, and then the piston 11 is driven upward by the steel cable 12 to pull and sample;

[0059] S6, when the hollow rammer works, the sampling pipe 10 is inserted into the seabed downward through the bottom cover 1, the camera 37 and the illuminating lamp 40 are started, the light passes through the glass 39 and irradiates on the shadow plate 36 to generate a shadow, the shadow is observed on the scale position of the steel ruler through the camera 37, and the depth of the sampling pipe 10 into the seabed is understood.

[0060] Further, in the step S4, the following step is further included:

[0061] S41, because the hollow rammer deeply inserts into the seabed to work, the hollow rammer generates a reaction force with the seabed to drive the shell 2 to move vertically, so that the shell 2 moves up and down along the inner side of the movable ring 16, the shell 2 drives the guide rod 15 through the fixed plate 13, the movable ring 16 guides the shell 2 to move up and down along the direction perpendicular to the seabed through the guiding action of the guide rod 15, and the horizontal movement of the shell 2 in the process of moving up and down is prevented.

[0062] Working principle: When the staff needs to use the hollow rammer, the hollow rammer should be slowly sunk into the sea through the lifting device, the motor 48 is started to drive the ring plate 45 to rotate, the output end of the propeller 47 is adjusted to face the direction deviating from the sampling site, the propeller 47 is started, the hollow rammer is moved above the sampling site, the telescopic rod 26 is started to insert the sharp rod 27 into the seabed, the motor 24 is started to drive the telescopic rod 26 to rotate, the inclined plate 31 and the arc plate 29 clean the impurities on the top of the sampling site, then the hollow rammer is placed on the seabed surface, the double hydraulic cylinders 7 are controlled by the power system 6 to drive the hollow hammer head 9 to move up and down, when the sampling pipe 10 contacts the seabed and rebounds, the movable ring 16 limits the position deviation of the shell 2 through the inserting rod 22, the bottom cover 1 drives the sampling pipe 10 to enter the seabed, the illuminating lamp 40 and the camera 37 are started to observe the depth of the sampling pipe 10 into the seabed, the piston 11 is pulled by the steel cable 12 to sample.

[0063] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics thereof. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned to the features indicated by the reference signs.

Claims

1. A hollow ram hammer for use in sampling subsea structures, characterized by: The utility model provides a kind of seabed sampling device, including bottom cover (1), the top of the bottom cover (1) is equipped with shell (2), the outside of the shell (2) is provided with support assembly, and the support assembly is used to provide stable support for shell (2); The support assembly includes four groups of fixed plates (13), each group has two fixed plates (13), and the fixed plate (13) is installed on the outside of the shell (2), one end of each group of the fixed plate (13) is equipped with the same guide rod (15), the outside of four guide rods (15) is equipped with the same movable ring (16), the bottom of the movable ring (16) is equipped with four connecting plates (17), one end of the connecting plate (17) is equipped with a guide pipe (18), the inside of the guide pipe (18) is placed with a round rod (19), the bottom of the round rod (19) is equipped with a flat plate (21), the bottom of the flat plate (21) is equipped with four insertion rods (22); The top of the shell (2) is equipped with top cover (3), the inside of the bottom cover (1) and the top cover (3) is installed with hollow pipe (4), the inside of the shell (2) is installed with oil tank (5), the top of the oil tank (5) is equipped with power system (6), the inside of the oil tank (5) is installed with double hydraulic cylinder (7), the inside of the double hydraulic cylinder (7) is installed with double hammer rod (8), the bottom of the double hammer rod (8) is equipped with hollow hammer head (9), and the oil tank (5), power system (6), double hydraulic cylinder (7), double hammer rod (8) and hollow hammer head (9) are located on the outside of the hollow pipe (4), the bottom of the bottom cover (1) is equipped with sampling pipe (10), the inside of the sampling pipe (10) is equipped with piston (11), the top of the piston (11) is equipped with steel cable (12), and the steel cable (12) penetrates the inside of the hollow pipe (4), the front of the shell (2) is equipped with cleaning assembly and observation assembly, the cleaning assembly is used to clean the impurities on the seabed surface, and the observation assembly is used to observe the depth of the bottom cover (1) down ramming; The cleaning assembly includes a rack (23), and the rack (23) is installed on the front of the shell (2), the front of the rack (23) is equipped with motor (24), the output end of the motor (24) is equipped with telescopic rod (26), and the telescopic rod (26) penetrates the inside of the movable ring (16), the outside of the telescopic rod (26) is equipped with support ring (25) through bearing, and the support ring (25) is installed on the front of the rack (23), the output end of the telescopic rod (26) is equipped with sharp rod (27), the inside of the output end of the telescopic rod (26) is penetrated and is equipped with insertion hole (28), the inside of the insertion hole (28) is placed with arc plate (29), the inside of the telescopic rod (26) is screwed and is equipped with two bolts (30), and the two bolts (30) penetrate the inside of the arc plate (29), the bottom of the arc plate (29) is equipped with inclined plate (31). The observation assembly includes a tape measure (32), and the tape measure (32) is installed on the front of the shell (2) and located at one side of the motor (24); one end of the tape measure (32) is installed on the top of the movable ring (16); the front of the shell (2) is provided with an observation box (33); a through hole (34) is formed in the observation box (33) and located at the outer side of the tape measure (32); two limiting plates (35) are installed on the inner walls of the two sides of the through hole (34); the same thin plate (36) is installed on the position close to the middle of the two limiting plates (35); a camera (37) is installed on the back inner wall of the through hole (34); an inclined slot (38) is formed in the back inner wall of the through hole (34) and located at the bottom of the camera (37); a glass (39) is installed on the inner side of the inclined slot (38); a lighting lamp (40) is installed on the back inner wall of the inclined slot (38); and a battery pack (41) is installed in the observation box (33) and used for supplying power to the lighting lamp (40) and the camera (37).

2. A hollow ram hammer for use in sampling subsea structures according to claim 1, characterized in that: The two sides of the solid plate (13) are provided with reinforcing ribs (14), and the top of the round rod (19) is provided with a baffle (20) which can prevent the round rod (19) from falling off through the guide pipe (18).

3. A hollow ram hammer for use in sampling subsea structures according to claim 2, wherein: The top of the top cover (3) is provided with a moving assembly which is used for conveniently moving in the sea and includes an L-shaped ring (42) installed on the top of the top cover (3), a plurality of teeth (43) installed on the outer side of the L-shaped ring (42), an L-shaped inner ring (44) placed on the inner side of the L-shaped ring (42), a ring plate (45) installed on the top of the L-shaped inner ring (44), an anti-friction tube (46) installed on the top of the ring plate (45) and located at the outer side of the steel cable (12), two thrusters (47) installed on the top of the ring plate (45), a motor (48) installed on the top of the ring plate (45) and located between the two thrusters (47), a gear (49) sleeved on the outer side of the output end of the motor (48) and located at the bottom of the ring plate (45), and the gear (49) is engaged with the teeth (43).

4. The operation method of the hollow rammer for sampling and detecting the seabed structure according to claim 3, wherein the operation method of the hollow rammer is as follows: S1. First, the staff hoists the hollow rammer through an external hoisting device, and makes the bottom cover (1) face the seabed, so as to sink the hollow rammer into the sea; the hoisting device slowly releases the rope, so that the bottom cover (1) gradually approaches the seabed position to be sampled; S2. Then, the staff detects the falling position corresponding to the bottom cover (1); when the position is not accurate, the staff starts the motor (48) to drive the ring plate (45) to rotate, and makes the two output ends of the thrusters (47) deviate from the direction of the bottom cover (1); and then, the staff starts the two thrusters (47) to move the hollow rammer above the seabed to be sampled. S3, when the seabed surface exists impurities that do not need to be sampled, the staff starts the telescopic rod (26) to extend the sharp rod (27) inserted into the seabed, and starts the motor (24) to drive the telescopic rod (26) to rotate clockwise, the telescopic rod (26) drives the arc plate (29) and the inclined plate (31) to rotate, and the impurities are cleaned, so that the seabed surface that needs to be sampled is exposed; S4, when the bottom cover (1) is in contact with the seabed surface, the insertion rod (22) will also move towards the ground under the action of gravity, if the hollow rammer moves horizontally, the insertion rod (22) is obliquely inserted into the seabed, thereby limiting the movement of the insertion rod (22), the movement of the shell (2) in the horizontal direction is limited by the insertion rod (22), so that the bottom cover (1) samples the same position; S5, through the power system (6) to control the double hydraulic cylinder (7) to work, the double hydraulic cylinder (7) drives the double hammer rod (8) to move up and down, the double hammer rod (8) drives the hollow hammer head (9) to move up and down, the hollow hammer head (9) is hammered downward to the bottom cover (1), the bottom cover (1) transmits the force to the sampling pipe (10), so that the sampling pipe (10) is deeply inserted into the seabed under the action of external force, and then the piston (11) is driven upward by the steel cable (12) to pull and sample; S6, when the hollow rammer works, the sampling pipe (10) is inserted into the seabed under the action of the bottom cover (1), the camera (37) and the illuminating lamp (40) are started, the light passes through the glass (39) and shines on the sheet (36) to produce a shadow, the shadow is projected on the scale position of the tape measure through the camera (37), and the depth of the sampling pipe (10) into the seabed is understood.

5. A method of operating a hollow ram hammer for sampling subsea structures according to claim 4, characterized in that: In the step S4, the following step is further included: S41, because the hollow rammer is deeply inserted into the seabed to work, the hollow rammer generates a reaction force with the seabed to drive the shell (2) to move vertically, so that the shell (2) moves up and down along the inner side of the movable ring (16), the shell (2) drives the guide rod (15) to move through the fixed plate (13), the movable ring (16) guides the shell (2) to move up and down along the direction perpendicular to the seabed through the guiding action with the guide rod (15), and the horizontal movement of the shell (2) is prevented in the process of moving up and down.

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