CN112255029B - Portable shipborne crank type water sampler lifting device capable of being fixed on ship side - Google Patents
Portable shipborne crank type water sampler lifting device capable of being fixed on ship side Download PDFInfo
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- CN112255029B CN112255029B CN202010935294.2A CN202010935294A CN112255029B CN 112255029 B CN112255029 B CN 112255029B CN 202010935294 A CN202010935294 A CN 202010935294A CN 112255029 B CN112255029 B CN 112255029B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/48—Manually-movable jib cranes for use in workshops
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Abstract
The invention discloses a portable shipborne crank type water sampler lifting device capable of being fixed on a ship side, which at least comprises a lifting assembly, a supporting assembly, a connecting assembly and a water sampler, wherein the bearing mode of the connecting assembly can be periodically changed under the condition that the water sampler is connected to the lifting assembly through the connecting assembly, so that the water sampler can at least have a first swing mode and a second swing mode when being impacted by waves, and the swing amplitude of the water sampler can be reduced under the condition that the water sampler is switched from the first swing mode to the second swing mode. When the wave impacts the water sampler, the swing form of the water sampler is changed to reduce the swing amplitude of the water sampler, so that the water sampler is prevented from colliding with the ship body.
Description
Technical Field
The invention belongs to the technical field of water supplies, and particularly relates to a portable shipborne crank type water sampler lifting device capable of being fixed on a ship side.
Background
Along with the increasing serious water pollution problem, in the hydrologic field and the water environment field, the research on the river basin point source pollution and the non-point source pollution is more and more, and the country is actively developing the improvement of the water pollution problem. The field water sample collection is the most basic work of water pollution research and treatment, and particularly in some main control sections of watersheds and representative areas with serious pollution, in order to more fully understand the space-time distribution situation of pollution, artificial sampling points are required to be added on the basis of field monitoring station layout. There are many types of water sampler in the market at present, and in the sampling process, the water sampler is connected with the water sampler by only one nylon rope, and meanwhile, the lifting device is used for lifting the water sampler. The prior art is disclosed in patent document CN111456153a, which discloses a water intake device. The apparatus may include: the water inlet pipe is provided with a water inlet end at one end and a connecting end at the other end; the lifting device can drive the water intake pipe to move; the guide device is used for guiding the moving direction of the water intake pipe; the water pump is connected with the connecting end of the water intake pipe, and pumps water through the water intake pipe, the water intake pipe is driven by the lifting device to move, so that the quick disassembly and recovery of the water intake pipe are realized, the device can be quickly transferred, the flexibility is enhanced, and the water intake pipe can be prevented from deviating from a preset position through the guide device when in use, so that the water intake work is more convenient, and the water intake from the deep sea can be safely and reliably realized under the action of different winds, waves and currents.
Disclosure of Invention
The invention aims to provide a portable shipborne crank type water sampler lifting device which can avoid excessive swing of a water sampler, reduce the force required by lifting the water sampler and has a protection function and can be fixed on the ship side.
The technical scheme adopted by the invention for achieving the purpose is as follows:
the utility model provides a portable shipborne crank-type water sampler carrying device that can be fixed in ship limit, includes at least carries and draws subassembly, supporting component, coupling assembling and water sampler, and under the circumstances that the water sampler was connected to carrying and drawing the subassembly through coupling assembling, coupling assembling's bearing mode can periodically change for the water sampler when receiving the wave impact, it can have first swing form and second swing form at least, and wherein, under the circumstances that the water sampler switches to the second swing form by first swing form, the swing range of water sampler can reduce. The connecting assembly at least comprises a first connecting rope and a plurality of second connecting ropes, the first connecting ropes are in a tight state in a first working state, the second connecting ropes are in a loose state, so that the water sampler can be in a first swinging state, the first connecting ropes are in a loose state in a second working state, and the second connecting ropes are in a tight state, so that the water sampler can be in a second swinging state. The first connecting rope and the water sampler can form a first connecting point, the second connecting rope and the water sampler can form a plurality of second connecting points, the plurality of second connecting points can be arranged at intervals along the circumferential direction of the water sampler by taking the first connecting point as a circle center, and when the first connecting rope is switched from a tight state to a loose state, the water sampler can do free falling body movement. The lifting assembly at least comprises a box body, a transmission shaft, a transmission assembly and a winding assembly, wherein the transmission shaft is rotationally arranged in the box body, the winding assembly is coupled to the transmission shaft through the transmission assembly, the transmission shaft, the transmission assembly and the winding assembly can synchronously rotate, and the first connecting rope and the second connecting rope are connected to the winding assembly, so that when the winding assembly rotates, the first connecting rope and the second connecting rope can be wound on the winding assembly. The transmission assembly at least comprises a first transmission gear and a second transmission gear, and the winding assembly at least comprises a first winding wheel meshed with the first transmission gear and a second winding wheel meshed with the second transmission gear, wherein the first connecting rope is connected to the first winding wheel, and the second connecting rope is connected to the second winding wheel. The first transmission gear can be coupled to the first reel via an electromagnetic clutch, wherein the first transmission gear and the first reel rotate synchronously when the electromagnetic clutch is energized. By the mode, when waves impact the water sampler, the swing mode of the water sampler is changed to reduce the swing amplitude of the water sampler, so that the water sampler is prevented from colliding with a ship body.
The first connecting rope can be connected to the water sampler through the coupling assembly, so that when the first connecting rope is switched from a tight state to a loose state, the coupling assembly can drive the water sampler to rotate in a mode of releasing elastic potential energy. When waves impact on a static object, the impact force of the waves can fully act on the object, so that the swing amplitude of the object is larger. The water sampler of this application can rotate, and then when rivers strike the water sampler, the impact force can be partly consumed owing to the rotation of water sampler, finally makes the swing amplitude of water sampler reduce. By the mode, excessive swing of the water sampler can be avoided.
The coupling assembly is at least a rotation shaft, a coil spring, a meshing gear and a ratchet wheel, wherein the rotation shaft is rotatably arranged on the fixed shaft, two end parts of the coil spring are respectively connected to the fixed shaft and the rotation shaft, and the ratchet wheel is arranged between the meshing gear and the rotation shaft under the condition that the meshing gear is arranged on the end part of the rotation shaft so that the meshing gear can rotate unidirectionally. The water sampler at least comprises an outer frame and an inner frame which are hollow cylindrical, wherein the inner frame is nested in the outer frame, turbine blades are arranged on the inner frame, and the coupling assembly can drive the inner frame to rotate under the condition that the coupling assembly releases elastic potential energy. A passage for fluid flow can be formed between the inner frame and the outer frame so that when the turbine blade rotates, it can generate an adsorption force to cause fluid to flow in the extending direction of the passage. When the water sampler is in a vertical state, water flows in the channel from top to bottom, and then upward reverse thrust is generated on the water sampler, so that the force required by lifting and pulling the water sampler can be reduced. When the water sampler is impacted by waves to form an inclined state, for example, when the waves impact the water sampler from left to right, the water sampler swings right by taking the first connecting point as a swing point to form an inclined state. At this time, the reverse thrust generated by the water flowing in the channel has a component force in the horizontal left direction, and the component force can be partially offset with the horizontal right impact force, so that the swing amplitude of the water sampler can be reduced.
The handle-type water sampler lifting device further comprises a clamping assembly coupled with the transmission shaft, the clamping assembly is connected with the water sampler through a third connecting rope, wherein when the water sampler is impacted by waves, the clamping assembly can be subjected to the pulling force exerted by the third connecting rope, and the friction resistance between the clamping assembly and the transmission shaft can be increased in a mode that the pressure exerted by the clamping assembly on the transmission shaft is increased. Be provided with the first gasbag that inflates with the tight subassembly coupling of clamp in the box, be provided with on the outer frame with the second gasbag that inflates of first gasbag intercommunication, when the second is inflated the gasbag and is received the wave impact, the gas in the second and can be transmitted to first gasbag that inflates, wherein, when first gasbag inflation, it can apply the extrusion force to the tight subassembly for the tight subassembly of clamp acts on the epaxial pressure increase of transmission. Through the mode, when waves impact the water sampler, the resistance required by rotation of the transmission shaft can be increased, and further, the wrist of a user is prevented from being sprained due to overlarge impact force.
The invention adopts the first connection rope capable of tightening and loosening, the rotatable inner frame and the rotatable turbine blade, thereby having the following beneficial effects: 1. when the wave impacts the water sampler, the swing form of the water sampler is changed to reduce the swing amplitude of the water sampler, so that the water sampler is prevented from colliding with the ship body. 2. The water sampler can rotate, and then when the water flow impacts the water sampler, the impact force is partially consumed due to the rotation of the water sampler, and finally the swing amplitude of the water sampler is reduced. By the mode, excessive swing of the water sampler can be avoided. 3. When the water sampler is in a vertical state, water flows in the channel from top to bottom, and then upward reverse thrust is generated on the water sampler, so that the force required by lifting and pulling the water sampler can be reduced. When the water sampler is impacted by waves to form an inclined state, for example, when the waves impact the water sampler from left to right, the water sampler swings right by taking the first connecting point as a swing point to form an inclined state. At this time, the reverse thrust generated by the water flowing in the channel has a component force in the horizontal left direction, and the component force can be partially offset with the horizontal right impact force, so that the swing amplitude of the water sampler can be reduced. 4. In the prior art, a user may hold the crank and pull the water sampler out of the water by, for example, turning the crank clockwise. In the process, the impact of sea waves on the water sampler can apply external force to the transmission shaft, so that the crank rotates anticlockwise. When the impact force of sea waves is large, the sea waves are easy to cause sprain of the wrist of a user. Namely, the user's wrist makes the crank rotate clockwise with effort and the impact of wave can hinder the clockwise rotation of crank to when the impact dynamics of wave is too big, it can drive the crank anticlockwise rotation, and the rotation direction of crank can conflict each other this moment, and then leads to the wrist to receive the impact force suddenly and sprain. According to the clamping piece, the resistance required by rotation of the transmission shaft can be increased or the transmission shaft is locked and locked, so that excessive impact force can be prevented from being transmitted to the wrist of a user. Therefore, the invention relates to a portable shipborne crank type water sampler lifting device which can avoid excessive swing of the water sampler, reduce the force required for lifting the water sampler and has a protection function and can be fixed on the ship side.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a handle-type water sampler pulling device;
FIG. 2 is a schematic diagram of a water sampler;
fig. 3 is a schematic structural diagram of a distribution board;
FIG. 4 is a schematic cross-sectional view of section B-B;
FIG. 5 is a schematic cross-sectional view of section A-A;
FIG. 6 is an enlarged partial schematic view of the portion C;
FIG. 7 is a schematic view of an arrangement of meshing teeth;
FIG. 8 is a schematic view of an arrangement of the clamping assembly;
fig. 9 is a schematic structural view of a second inflatable bladder.
Reference numerals: the air bag comprises a lifting assembly 1, a supporting assembly 2, a connecting assembly 3, a water sampler 4, an outer frame 4a, an inner frame 4b, a water collecting container 4c, a fixed shaft 5, a first connecting rope 3a, a second connecting rope 3b, a first connecting point 6, a second connecting point 7, a first supporting rod 2a, a second supporting rod body b, a distributing disc 2c, a clamping 2d, a first wire guide 2c-1, a second wire guide 2c-2, a box body 1a, a crank 1b, a transmission shaft 1c, a transmission assembly 1d, a winding assembly 1e, a first winding wheel 1e-1, a second winding wheel 1e-2, a first transmission gear 1d-1, a second transmission gear 1d-2, an electromagnetic clutch 8, a turbine blade 9, a coupling assembly 10, a rotating shaft 10a, a coil spring 10b, a meshing gear 10c, a ratchet 10d, a channel 13, a fixed hole 5a meshing gear 14, a third connecting rope 15, a clamping assembly 16, a first clamping body 16a, a second clamping body 16b, a compression spring 16c, a base 16d, a first compression spring 16d, a base 16d, a first inflation channel 18b, a second inflation channel 18b and an inflation air bag.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the specific embodiments and the attached drawings:
example 1:
as shown in fig. 1 to 7, the present application provides a portable shipborne crank-type water sampler lifting device capable of being fixed on a ship side, which at least comprises a lifting assembly 1, a supporting assembly 2, a connecting assembly 3 and a water sampler 4. The water sampler 4 is connected to the lifting assembly 1 via a connection assembly 3. The water sampler 4 can be pulled out of the water by the pulling assembly 1. The connection assembly 3 can be in abutting contact with the support assembly 2. The support assembly 2 is used for supporting the water sampler 4 so that the water sampler can be in a suspended state.
The water sampler 4 comprises at least an outer frame 4a, an inner frame 4b and a number of water collection containers 4c. The inner frame 4b is nested on the outer frame 4a such that the inner frame 4b can rotate about its own central axis when subjected to an external force. For example, the outer frame 4a and the inner frame 4b can each have a cylindrical shape. A fixed shaft 5 is provided in the outer frame 4a. The inner frame 4b is provided with mounting holes. The fixed shaft 5 is nested in the mounting hole, thereby enabling the inner frame 4b to rotate about the fixed shaft 5. The water collecting containers 4c are all provided on the inner frame 4 b.
The connecting assembly 3 comprises at least a first connecting string 3a and a number of second connecting strings 3b. The first connecting rope 3a and the second connecting rope 3b can each be connected to the outer frame 4a. In particular, the first connection point 6 between the first connection cord 3a and the outer frame 4a can be located on the central axis of the outer frame 4a. Each second connecting rope 3b and the outer frame 4a can form at least one second connecting point 7. The second connection points 7 can be arranged at intervals along the circumferential direction of the outer frame 4a.
The support assembly 2 comprises at least a first support rod 2a, a second support rod body 2b, a distribution board 2c and a clamp 2d. One end of the first support bar 2a is hinged to the lifting assembly. The other end of the first support rod 2a is provided with a distribution board 2c. One end of the second support bar 2b is connected to the first support bar 2a. The other end of the second support bar 2b is provided with a clip 2d. The support assembly 2 can be clamped to the hull edge by means of the clips 2d. The distribution board 2c has a disc shape, and is provided with a first wire guide 2c-1 and a plurality of second wire guide 2c-2. The first wire guide 2c-1 is located at the geometric center of the distribution board 2c. A plurality of second wire guides 2c-2 are arranged at intervals along the circumferential direction of the distribution board 2c. The first connection string 3a may be connected to the pulling assembly 1 after passing through the first wire guide 2 c-1. The second connection string 3b may be connected to the pulling assembly 1 after passing through the second wire guide 2c-2.
The lifting assembly 1 at least comprises a box body 1a, a crank handle 1b, a transmission shaft 1c, a transmission assembly 1d and a winding assembly 1e. The transmission shaft 1c is rotatably arranged in the box body 1 a. The crank 1 is disposed outside the case 1a in such a manner as to be connected to the transmission shaft 1c. The rotation of the transmission shaft 1c can be achieved by rocking the crank 1 b. The winding assembly 1e is coupled to the drive shaft 1c through the drive assembly 1d so that the winding assembly 1e and the drive shaft 1c can rotate in synchronization. The winding assembly 1e includes at least a first winding reel 1e-1 and a second winding reel 1e-2. The first connecting cord 3a is connected to the first reel 1e-1. The second connecting cord 3b is connected to the second reel 1e-2. When the first reel 1e-1 rotates, the first connection rope 3a can be wound around the first wire guide wheel 1e-1. The second connection rope 3b can be wound around the second wire guide wheel 1e-2 when the second wire guide wheel 1e-2 is rotated.
The transmission assembly 1d comprises at least a first transmission gear 1d-1 and a second transmission gear 1d-2. The first reel 1e-1 is engaged to the drive shaft 1c through the first drive gear 1 d-1. The second reel 1e-2 is engaged to the propeller shaft 1c through the second drive gear 1d-2. For example, the first reel 1e-1, the second reel 1e-2 and the transmission shaft 1c are each provided with engagement teeth, which can be engaged to the transmission assembly 1d.
The first transmission gear 1d-1 and the first reel 1e-1 are connected by an electromagnetic clutch 8. When the electromagnetic clutch 8 is energized, it can generate an adsorption force, thereby enabling the first transmission gear 1d-1 and the first reel 1e-1 to rotate synchronously. When the electromagnetic clutch 8 is powered off, the attraction force disappears, and at this time, the rotation of the first transmission gear 1d-1 will no longer drive the first reel 1e-1 to rotate synchronously. A controller and timer may be provided in the housing 1a to control energization and de-energization of the electromagnetic clutch 8. For example, when the timer detects that the clockwise continuous rotation time of the first reel 1e-1 is greater than the set threshold value, the controller controls the electromagnetic clutch 8 to be powered off. When the timer detects that the counterclockwise continuous rotation time of the first reel 1e-1 is greater than the set value, the controller controls the electromagnetic clutch 8 to be energized. The transmission ratios among the different transmission shafts 1c, transmission assemblies 1d, and winding assemblies 1e are the same so that the winding amounts on the first reel 1e-1 and the second reel 1e-2 are the same as each other in a unit time. The length of the first connecting rope 3 is smaller than that of the second connecting rope 3b, and then under the action of gravity of the water sampler 4, the first connecting rope 3a can be in a tight state, and the second connecting rope 3b can be in a loose state, namely, the water sampler lifting device is in a first working state at the moment. In use, a user holds the crank 1b to continue rotating the drive shaft 1c. When the transmission shaft 1c starts to rotate, the electromagnetic clutch 8 is in an energized state, so that the first reel 1e-1 and the second reel 1e-2 synchronously rotate clockwise, and the first connecting rope 3a can be wound on the first reel 1e-1, and the second connecting rope 3b can be wound on the second reel 1e-2, and in the process, the first connecting rope 3a is in a tight state, and the second connecting rope 3b is in a loose state, that is, in the process, the first connecting rope 3a is in a state of bearing the gravity of the water sampler 4. When the first reel 1e-1 continues to rotate clockwise for a time greater than the set threshold, the electromagnetic clutch 8 is de-energized, at which time the first reel 1e-1 will rotate counter-clockwise under the weight of the water sampler 4, such that the first connecting cord 3a is unwound from the first reel 1e-1 until the second connecting cord 3b is in a taut state (at which time the water sampler pulling device is in a second working state). That is, after the electromagnetic clutch 8 is powered off, the second connecting rope 3b will fully bear the weight of the water sampler 4. When the first connecting string 3a is in a taut state, the water sampler 4 is impacted by waves during the process of being pulled out of the water, and then the first swing mode is presented. In the first swing configuration, the water sampler 4 will swing back and forth in the direction of the impact force it receives. For example, when the water sampler 4 is subjected to a horizontal right impact force, it will first move to the right and when it swings to the highest point, it will swing to the left. When the electromagnetic clutch 8 is switched from the energized state to the de-energized state, at this instant, the water sampler 4 will perform a free falling motion due to the second connecting cord 3b being in a relaxed state such that the second connecting cord 3b is gradually tightened, the water sampler 4 will assume a second swing configuration. In the second swing configuration, the water sampler 4 will perform a cone swing motion. When the water sampler 4 is converted from the first swing mode to the second swing mode, the swing amplitude of the water sampler 4 is reduced, and the water sampler 4 can be prevented from being excessively swung to collide with the ship body.
The fixed shaft 5 is provided with a coupling assembly 10. The first connecting string 3a is connected to the inner frame 4b via the coupling assembly 10. When the first connecting rope 3a is in a tight state to lift the water sampler 4, the first connecting rope 3a can apply an external force to the coupling assembly 10, so that the coupling assembly 10 stores elastic potential energy. When the first connecting string 3a is switched from the tightened state to the loosened state, the elastic potential energy of the coupling assembly 1 can be released, thereby enabling the inner frame 4b to rotate about the fixed shaft 5 under the elastic potential energy of the coupling assembly 10. Specifically, the coupling assembly 10 includes at least a rotation shaft 10a, a coil spring 10b, a meshing gear 10c, and a ratchet 10d. The rotation shaft 10a is rotatably provided in the fixed shaft 5. The axial direction of the fixed shaft 5 and the axial direction of the rotation shaft 10a are perpendicular to each other. For example, the fixed shaft 5 is provided with a fixed hole 5a, and the rotation shaft 10a is fitted into the fixed hole 5 a. The coil spring 10b is provided in the fixing hole 5a, and both ends of the coil spring 10b are connected to an inner wall of the fixing hole 5a and an outer wall of the rotation shaft 10a, respectively. The first connecting cord 3a is connected to the rotation shaft 10a. In the initial state, the first connecting string 3a is wound around the rotation shaft 10a. When the crank 1b is rotated, the first connecting rope 3a is released from the rotation shaft 10a, thereby rotating the rotation shaft 10a, and finally the coil spring 10b stores elastic potential energy. The rotation shaft 10a is provided with meshing gears 10c at both end portions. A ratchet 10d is provided between the rotation shaft 10a and the meshing gear 10c to achieve rotation of the meshing gear 10c. For example, when the rotation shaft 10a rotates clockwise, the coil spring 10b stores elastic potential energy, and the meshing gear 10c is in a stationary state. When the rotation shaft 10a rotates counterclockwise, the coil spring 10b releases elastic potential energy, and the meshing gear 10c is driven by the ratchet 10d to rotate synchronously. The inner frame is provided with annular engagement teeth 14. The meshing gear 10c can mesh with the meshing teeth 14, and rotation of the inner frame can be achieved by rotation of the meshing gear 10c.
The inner frame 4b is nested in the outer frame 4a. The inner frame 4b is provided with turbine blades 9. The turbine blades 9 can rotate in synchronization with the inner frame 4 b. The channels 13 can be formed between the inner frame 4b and the outer frame 4a. As the turbine blade 9 rotates, it can generate an adsorption force to cause fresh water to flow in the extending direction of the passage 13.
Example 2:
as shown in fig. 1, the handle-type water sampler pulling device of the present application is used by first moving the tank 1a to the hull edge. The first support bar 2a is rotated clockwise so that the second support bar 2b can be in a vertically downward state. At this time, the case 1a and the hull edge can be fixed by the clips 2d. In the initial state, the first connecting rope 3a is in a tensed state, the second connecting rope 3b is in a relaxed state, and the electromagnetic clutch 8 is in an energized state. Then, the crank 1b is held to rotate the transmission shaft 1c, and at this time, the transmission assembly 1d and the winding assembly 1e rotate synchronously, so that the connection assembly 3 can be wound on the winding assembly 1e, and the water sampler 4 can be pulled out from water in the above manner.
The electromagnetic clutch 8 can be periodically electrified and de-electrified, and when the electromagnetic clutch 8 is de-electrified, the water sampler 4 will perform free falling motion at the moment so that the second connecting rope 3b is switched from a loose state to a tight state because the length of the second connecting rope 3b is longer than that of the first connecting rope 3 a. When the first connecting rope 3a is in a tight state, the water sampler 4 can take a first swinging mode of swinging back and forth after being impacted by waves. When the second connecting rope 3b is gradually tightened, the water sampler 4 gradually moves in a conical pendulum manner, the conical pendulum movement can effectively consume the kinetic energy of the water sampler, so that the swing amplitude of the water sampler 4 is reduced, and the phenomenon that the water sampler excessively swings to collide with a ship body is avoided.
As shown in fig. 2 and 6, when the first connecting cord 3a is in a tight state, the first connecting cord 3a can be wound around the second reel 1e-2, at which time the first connecting cord 3a will pull the rotation shaft 10a to rotate, and thus the first connecting cord 3a will be unwound from the rotation shaft 10a, and the rotation of the rotation shaft 10a will cause the coil spring 10b to store elastic potential energy. Subsequently, when the electromagnetic clutch 8 is de-energized, the water sampler 8 will move as a free fall, at which time the elastic potential energy of the coil spring 10b will be released to drive the rotation shaft 10a to rotate, and finally the inner frame 4b is driven to rotate by the meshing gear 10c. When waves impact on a static object, the impact force of the waves can fully act on the object, so that the swing amplitude of the object is larger. The water sampler 4 of the application can rotate, and then when water flow impacts the water sampler 4, the impact force can be partially consumed due to the rotation of the water sampler 4, and finally the swing amplitude of the water sampler 4 is reduced. In this way, excessive rocking of the water sampler 4 can be avoided.
As shown in fig. 4 and 5, when the inner frame 4b rotates, it can bring the turbine blades 9 into synchronous rotation. The rotation of the turbine blades 9 will create an adsorption force so that the seawater above the turbine blades 9 can be sucked into the channel 13 and eventually discharged from below the channel 13 at a certain exit speed. When the water sampler 4 is in a vertical state, water flows from top to bottom in the channel 13, and then upward reverse thrust is generated on the water sampler 4, so that the force required by lifting the water sampler can be reduced. When the water sampler 4 is inclined by the impact of the wave, for example, as shown in fig. 2, when the wave impacts the water sampler 4 from left to right, the water sampler 4 swings right to form an inclined state with the first connection point 6 as a swing point. At this time, the reverse thrust generated by the water flowing through the passage 13 has a component force in the horizontal leftward direction, and the component force can partially cancel out the horizontal rightward impact force, and thus the swing amplitude of the water sampler 4 can be reduced.
Example 3:
as shown in fig. 1, 8 and 9, the crank-type water sampler pulling device of the present application further comprises a third connecting rope 15. A clamping assembly 16 is also provided within the housing 1 a. The third connecting string 15 is connected at both ends to the inner frame 4b and the clamping assembly 16, respectively. The clamping assembly 16 can be coupled with the drive shaft 1c. When the inner frame 4b is impacted by waves, the third connecting rope 15 applies an acting force to the clamping assembly, so that the clamping assembly 16 works to apply a holding force to the transmission shaft 1c, at this time, the friction resistance between the clamping assembly 16 and the transmission shaft 1c is increased, and the rotation of the transmission shaft 1c can be limited. Specifically, the clamping assembly 16 includes at least a first clamping body 16a, a second clamping body 16b, a compression spring 16c, and a base 16d. The first clamping body 16a and the second clamping body 16b are each semi-circular in shape, which can lock the transmission shaft 1c in a mutually opposing manner. The first clamping body 1a is slidably provided on the base 16d. The first clamping body 16a and the second clamping body 16b are connected by a compression spring 16c, and the compression spring 16c is compressed when the distance between the first clamping body 16a and the second clamping body 16b is reduced. The third connecting rope 15 can be connected to the first clamping body 16a, and when the inner frame 4b is impacted by waves, the third connecting rope 15 will pull the first clamping body 16, and further pull the first clamping body 16a to move, at this time, the distance between the first clamping body 16a and the second clamping body 6b will be reduced to hug the driving shaft 1c. In the prior art, a user may hold the handle 1b and pull the water sampler 4 out of the water by, for example, turning the handle 1b clockwise. In this process, the impact of the sea wave on the water sampler 4 applies an external force to the transmission shaft 1c, thereby rotating the crank 1b counterclockwise. When the impact force of sea waves is large, the sea waves are easy to cause sprain of the wrist of a user. Namely, the user's wrist force makes the crank 1b rotate clockwise and the impact of the sea wave can hinder the clockwise rotation of the crank, and when the impact force of the sea wave is too large, it can drive the crank to rotate counterclockwise, and at this time the rotation directions of the crank can conflict with each other, thereby easily causing the wrist to be sprained due to the sudden impact force. The application can increase the resistance required by the rotation of the transmission shaft 1c or lock the transmission shaft 1c tightly through the clamping piece 16, and further can avoid the transmission of excessive impact force to the wrist of a user. The clamping assembly is triggered to apply the holding force only at the moment when the water sampler is impacted, and then the clamping assembly returns to a loose state. The holding force does not need to be continuously applied, and only needs to be applied at the moment of being impacted.
The case 1a is also provided with a first inflatable bladder 17. The outer frame 4a is provided with a second inflatable balloon 18. The second inflatable bladder 18 is provided with at least one first exhaust passage 18a and a plurality of second exhaust passages 18b. The first inflatable bag 17 communicates with the second inflatable bag 18 through a first exhaust passage 18 a. The second inflatable bag 18 communicates with the atmosphere through a second exhaust passage 18b. When the sea waves impact the second inflatable bladder 18, the second inflatable bladder 18 is compressed such that a portion of the gas therein is injected into the first inflatable bladder 17 through the second exhaust passage 18a and another portion of the gas is exhausted to the atmosphere through the second exhaust passage 18b. In the above process, after the first inflatable airbag 17 is inflated and expanded, a pressing force is formed on the first clamping body 16a, so that the first clamping body 16a is pushed to move to complete the holding of the transmission shaft 1c, and meanwhile, the gas discharged through the second exhaust channel 18b applies a force in a reverse direction to the water sampler 4, so that the swing amplitude of the water sampler 4 can be reduced. A first diaphragm type check valve may be provided in each of the first and second exhaust passages 1a and 18b so that the gas can only move in one direction (i.e., the external gas cannot enter the second airbag through the first and second exhaust passages 18a and 18 b). A third vent passage with a second diaphragm type one-way valve may be provided on the second inflatable bladder 17 so that the outside air can flow only in one direction to enter the second inflatable bladder 17 through the third vent passage. The first inflatable air bag 17 may be provided with a diaphragm type check valve, so that when the internal pressure is greater than a set value, automatic exhaust is achieved, or an electric valve may be provided thereon, so that manual exhaust is achieved. The conduit between the first inflatable bladder and the second inflatable bladder may be arranged along the extension direction of the third connecting cord (similar to how the lifting cord and the oxygen tube are tied to each other during diving).
Claims (5)
1. A portable boat-borne crank-type water sampler lifting device capable of being fixed on the boat side, at least comprising a lifting assembly (1), a supporting assembly (2), a connecting assembly (3) and a water sampler (4), wherein when the water sampler (4) is connected to the lifting assembly (1) through the connecting assembly (3), the bearing mode of the connecting assembly (3) can be periodically changed, so that the water sampler (4) can at least have a first swing mode and a second swing mode when being impacted by waves, and the swing amplitude of the water sampler (4) can be reduced when the water sampler (4) is switched from the first swing mode to the second swing mode;
the connecting assembly (3) at least comprises a first connecting rope (3 a) and a plurality of second connecting ropes (3 b), the first connecting rope (3 a) is in a tight state in a first working state, the second connecting ropes (3 b) are in a loose state, so that the water sampler (4) can be in the first swing state, the first connecting ropes (3 a) are in a loose state in a second working state, and the second connecting ropes (3 b) are in a tight state, so that the water sampler (4) can be in the second swing state;
a first connection point (6) can be formed between the first connection rope (3 a) and the water sampler (4), a plurality of second connection points (7) can be formed between the second connection rope (3 b) and the water sampler (4), the plurality of second connection points (7) can be arranged at intervals along the circumferential direction of the water sampler (4) by taking the first connection point (6) as a circle center, and when the first connection rope (3 a) is switched from a tightening state to a loosening state, the water sampler (4) can do free falling body movement;
the lifting assembly (1) at least comprises a box body (1 a), a transmission shaft (1 c), a transmission assembly (1 d) and a winding assembly (1 e), wherein the transmission shaft (1 c) is rotatably arranged in the box body (1 a), the winding assembly (1 e) is coupled to the transmission shaft (1 c) through the transmission assembly (1 d), the transmission shaft (1 c), the transmission assembly (1 d) and the winding assembly (1 e) can synchronously rotate, and the first connecting rope (3 a) and the second connecting rope (3 b) are connected to the winding assembly (1 e) so that when the winding assembly (1 e) rotates, the first connecting rope (3 a) and the second connecting rope (3 b) can be wound on the winding assembly (1 e);
the transmission assembly (1 d) comprises at least a first transmission gear (1 d-1) and a second transmission gear (1 d-2), the winding assembly (1 e) comprises at least a first winding wheel (1 e-1) meshed to the first transmission gear (1 d-1) and a second winding wheel (1 e-2) meshed to the second transmission gear (1 d-2), wherein the first connecting rope (3 a) is connected to the first winding wheel (1 e-1), and the second connecting rope (3 b) is connected to the second winding wheel (1 e-2);
the first transmission gear (1 d-1) can be coupled with the first reel (1 e-1) through an electromagnetic clutch (8), wherein the first transmission gear (1 d-1) and the first reel (1 e-1) synchronously rotate when the electromagnetic clutch (8) is electrified, and the first connecting rope (3 a) can be connected to the water sampler (4) through a coupling assembly (10), so that the coupling assembly (10) can drive the water sampler (4) to rotate in a mode of releasing elastic potential energy when the first connecting rope (3 a) is switched from the tightening state to the loosening state;
in use, a user holds the crank (1 b) to enable the transmission shaft (1 c) to continuously rotate, when the transmission shaft (1 c) starts to rotate, the electromagnetic clutch (8) is in an energized state, so that the first reel (1 e-1) and the second reel (1 e-2) synchronously rotate clockwise, further the first connecting rope (3 a) can be wound on the first reel (1 e-1), the second connecting rope (3 b) can be wound on the second reel (1 e-2), in the process, the first connecting rope (3 a) is in a tight state, the second connecting rope (3 b) is in a loose state, namely, in the process, the first connecting rope (3 a) is completely subjected to the gravity of the water sampler (4), when the time of continuous clockwise rotation of the first reel (1 e-1) is larger than a set threshold value, the electromagnetic clutch (8) is deenergized, and at the moment, the first reel (1 e-1) is enabled to rotate clockwise under the action of the gravity, so that the first connecting rope (3 a) is in a tight state, and the first connecting rope (3 a) is enabled to be in a loose state until the first connecting rope (1) is in a tight state.
2. The handle-type water sampler pulling device according to claim 1, wherein the coupling assembly (10) rotates at least a shaft (10 a), a coil spring (10 b), a meshing gear (10 c) and a ratchet (10 d), the shaft (10 a) is rotatably provided on a fixed shaft (5), both end portions of the coil spring (10 b) are respectively connected to the fixed shaft (5) and the shaft (10 a), and in the case that the meshing gear (10 c) is provided on an end portion of the shaft (10 a), a ratchet (10 d) is provided between the meshing gear (10 c) and the shaft (10 a) to enable unidirectional rotation of the meshing gear (10 c).
3. Crank-type water sampler pulling device according to claim 2, characterized in that the water sampler (4) comprises at least an outer frame (4 a) and an inner frame (4 b) which are hollow cylindrical, the inner frame (4 b) is nested in the outer frame (4 a), the inner frame (4 b) is provided with turbine blades (9), the coupling assembly (10) can drive the inner frame (4 b) to rotate under the condition that the coupling assembly (10) releases elastic potential energy, a channel (13) for fluid flow can be formed between the inner frame (4 b) and the outer frame (4 a), and when the turbine blades (9) rotate, absorption force can be generated to enable fluid to flow along the extending direction of the channel (13).
4. A crank-type water sampler pulling device according to claim 3, further comprising a clamping assembly (16) coupled to the drive shaft (1 c), the clamping assembly (16) being connected to the water sampler (4) by a third connecting rope (15), wherein the clamping assembly (16) is capable of being subjected to a pulling force exerted by the third connecting rope (15) when the water sampler (4) is impacted by waves, such that the frictional resistance between the clamping assembly (16) and the drive shaft (1 c) is increased in such a way that the pressure exerted by the clamping assembly (16) on the drive shaft (1 c) is increased.
5. Crank-type water sampler pulling device according to claim 4, characterized in that a first inflatable balloon (17) coupled to the clamping assembly (16) is provided in the box (1 a), a second inflatable balloon (18) communicating with the first inflatable balloon (17) is provided on the outer frame (4 a), when the second inflatable balloon (18) is impacted by waves, the gas in the second inflatable balloon (18) can be transmitted to the first inflatable balloon (17), wherein when the first inflatable balloon (17) is inflated and expanded, it can exert a pressing force on the clamping assembly (16) so that the pressure of the clamping assembly (16) acting on the transmission shaft (1 c) is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935294.2A CN112255029B (en) | 2020-09-08 | 2020-09-08 | Portable shipborne crank type water sampler lifting device capable of being fixed on ship side |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010935294.2A CN112255029B (en) | 2020-09-08 | 2020-09-08 | Portable shipborne crank type water sampler lifting device capable of being fixed on ship side |
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| CN112255029B true CN112255029B (en) | 2024-02-27 |
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