CN108918185B - Underwater proportional trigger device of sand extractor - Google Patents
Underwater proportional trigger device of sand extractor Download PDFInfo
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- CN108918185B CN108918185B CN201810376605.9A CN201810376605A CN108918185B CN 108918185 B CN108918185 B CN 108918185B CN 201810376605 A CN201810376605 A CN 201810376605A CN 108918185 B CN108918185 B CN 108918185B
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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
Abstract
The invention provides an underwater fixed-proportion trigger device of a sand sampler, belonging to the technical field of auxiliary devices of sand samplers, wherein a support part comprises a support II; the power part comprises a rotatable pulley, a floating ball which penetrates through the suspension rod and can move along the suspension rod, a traction rope which is connected with the floating ball and the outer wall of the pulley, a volute spiral spring mounting shaft which extends into the pulley from an opening at the first end of the pulley and does not rotate along with the pulley, a volute spiral spring and a right-angle speed reducer; the fixed proportion part comprises a shaft I, a gear A, a gear C, a shaft II, a pin fixing wheel, a gear D, a gear B, a compression spring and a pin shaft; the trigger part comprises a mounting rack, a four-bar mechanism rod II, a four-bar mechanism rod III, a four-bar mechanism rod IV, a first connecting piece, a second connecting piece, a torsion spring, a pressure lever and a pull rope; the device realizes mechanical automation, reduces the working strength of workers, shortens the measurement time, has control precision only related to the processing precision of parts, and avoids the influence of temperature drift, null drift and the like of electronic devices on the control precision.
Description
Technical Field
The invention relates to the technical field of auxiliary devices of sand extractors, in particular to an underwater constant-proportion trigger device of a sand extractor.
Background
The sand sampler is an instrument for sampling suspended load water samples, bed load and bed sand samples in rivers so as to measure the sand content, the sand transport rate and the polar distribution of sand particles, wherein the suspended load sand sampler is used for collecting instantaneous suspended load sand water samples of water cross sections of rivers, lakes and the like. The most common suspension quality sand sampler is an instantaneous sampler, the axis of a water taking cylinder is parallel to the water flow direction, two ends of the water taking cylinder are provided with covers, the edges of the covers are provided with springs, the principle is that a main traction line is connected with a cylinder cover positioned at the upper part of the water taking cylinder through a series of short rods connected with shafts, the cylinder cover is opened during sampling, water flows through the cylinder, and the main traction line is operated manually or electrically after the sampler reaches a preset water level to drive the short rods to move to close the cylinder cover by means of the elasticity of the springs so as to collect water samples. After a water sample is obtained, the sampler is lifted out of the water surface, and the cylinder cover is opened to transfer the water sample. When the water sampling device is operated manually, the fixed water level is determined by observing that the scales marked on the supporting rod are level with the water surface by an operator, the distance between the eyes of the operator and the scales is larger, and the water surface fluctuation is large due to the fluidity of river water, so that the operator cannot accurately determine the water level of the water taking barrel, the actual water level of a water sample is larger than the preset water level, repeated operation is required to reduce the error as much as possible, the labor intensity of the operator is increased, and the measuring time is prolonged; when the electronic device is adopted for control, the control precision of the water level of the water taking barrel is easily influenced by the temperature drift, the zero drift and the like of the electronic device.
Disclosure of Invention
The invention provides an underwater fixed-proportion trigger device of a sand sampler, which is used for sampling after a sampler reaches a preset water level in a mechanical mode, so that the labor intensity of workers is reduced, the measurement time is shortened, and the control precision of the water level of a water taking barrel is improved by avoiding the adoption of electronic devices.
The invention provides an underwater fixed-proportion trigger device of a sand sampler, which comprises a bracket part, a power part, a fixed-proportion part and a trigger part, wherein the bracket part is connected with the power part; the stent part comprises a stent II; the power part comprises a rotatable pulley, a floating ball which penetrates through the suspension rod and can move along the suspension rod, a traction rope which is connected with the floating ball and the outer wall of the pulley, a volute spiral spring mounting shaft which extends into the pulley from an opening at the first end of the pulley and does not rotate along with the pulley, a volute spiral spring and a right-angle speed reducer; the inner end of the volute spiral spring is fixed on the volute spiral spring mounting shaft, and the outer end of the volute spiral spring is fixed on the inner wall of the pulley; the input end of the right-angle reducer is connected with the connecting shaft at the second end of the pulley; the fixed proportion part comprises a shaft I, a gear A, a gear C, a shaft II, a pin fixing wheel, a gear D, a gear B, a compression spring and a pin shaft; the shaft I is rotatably arranged on the bracket II, and the bottom end of the shaft I extends out of the bracket II to be connected with an output shaft of the right-angle speed reducer; the gear A and the gear C are sleeved on the shaft I and can rotate along with the shaft I; the shaft II is fixedly arranged on the bracket II; the pin fixing wheel is sleeved on the shaft II, and a damper is arranged between the pin fixing wheel and the shaft II; the gear D and the gear B are rotatably arranged on the shaft II and are respectively meshed with the gear C and the gear A, the gears adopt the same modulus and the same pressure angle, the meshed gear pairs have the same center distance, and the number of teeth of the gear A is greater than that of the gear C; the gear D and the gear B are respectively provided with an arc-shaped groove I and an arc-shaped groove II; in an initial state, only the end parts of the arc-shaped groove I and the arc-shaped groove II are superposed; in the descending process in water, the gear D and the gear B rotate in the positive direction, and the overlapped part of the arc-shaped groove I and the arc-shaped groove II is gradually increased; before rising in water and not triggering, the gear D and the gear B rotate reversely, and the overlapped part of the arc-shaped groove I and the arc-shaped groove II is gradually reduced; the end part of the arc-shaped groove II is provided with a limiting part; the compression spring is arranged in the mounting hole of the pin fixing wheel; the upper end of the pin shaft is inserted into the mounting hole of the pin fixing wheel and pressed against the compression spring; in an initial state, the pin shaft penetrates through the superposed end part of the arc-shaped groove I and the arc-shaped groove II, and the lower end of the pin shaft is clamped in the limiting part; in the process of descending in water, the pin shaft is separated from the lower side surface of the extending gear B from the limiting part under the pushing action of the end part of the arc-shaped groove I and the elastic force action of the compression spring and moves along the positive direction of the arc-shaped groove II; before rising in water and not triggering, the pin shaft reversely moves along the arc-shaped groove II to return to the initial position to trigger the triggering part; the trigger part comprises a mounting rack, a four-bar mechanism rod II, a four-bar mechanism rod III, a four-bar mechanism rod IV, a first connecting piece, a second connecting piece, a torsion spring, a pressure lever and a pull rope; the mounting rack comprises a main rod serving as a four-bar mechanism rod I in the four-bar mechanism and a branch rod extending from the main rod; the upper end surface of the four-bar mechanism rod IV is fixed on the lower side surface of the gear B; the first connecting piece sequentially penetrates through the upper end of the four-bar mechanism rod IV, the first end of the main rod and the end part of the supporting rod, and a torsion spring is sleeved on a part between the first end of the main rod and the end part of the supporting rod; the upper end of the four-bar mechanism bar II is rotatably connected with the second end of the main bar through a second connecting piece; two ends of the four-bar mechanism rod III are respectively connected with the four-bar mechanism rod II and the four-bar mechanism rod IV in a rotating way through second connecting pieces, and are connected with the main rod, the four-bar mechanism rod II and the four-bar mechanism rod IV to form a four-bar mechanism; the pressing rod is rotatably arranged on the lower side surface of the gear B and comprises a triggered section and a pressing section, wherein the triggered section is pushed by the lower end of the pin shaft, and the pressing section is used for pressing the rod body of the main rod between the branch rod and the second end of the main rod; two ends of the pull rope are respectively connected with a cylinder cover closing trigger mechanism and a four-bar mechanism of the sand sampler, and the cylinder cover closing trigger mechanism is pulled under the driving of the four-bar mechanism.
Further, the power part also comprises a pulley mounting seat; the volute spiral spring mounting shaft is provided with a cover plate, and the cover plate is fixed on the pulley mounting seat to close the opening at the first end of the pulley.
Further, the pulley mounting seat is a bearing seat; the power part also comprises a bearing arranged in the bearing seat; the first end of the pulley is fixedly connected with the inner ring of the bearing.
Further, the bracket part also comprises a bracket I for mounting the pulley mounting seat and the right-angle speed reducer; the bracket II is arranged on the bracket I; flanges for mounting the pulleys are arranged on the pulley mounting seat and the bracket I.
Further, the power part also comprises a coupling for connecting an output shaft of the right-angle speed reducer with the shaft I.
Furthermore, the scaling part also comprises a shaft sleeve I for connecting the upper end of the shaft I and the upper end of the bracket II through a through hole I, a shaft sleeve II for connecting the upper end of the shaft II and the upper end of the bracket II through a through hole II, a shaft sleeve III arranged between the pin fixing wheel and the gear D and/or a shaft sleeve IV for connecting the lower end of the shaft II and the upper end of the bracket II through a through hole II.
Furthermore, the mounting hole on the pin fixing wheel is a through hole; the scaling part also comprises a sealing cover for sealing the upper end of the mounting hole.
Further, an annular limiting part I protruding inwards is arranged on the inner wall of the lower end of the mounting hole; the upper end of round pin axle is provided with outside bellied annular spacing portion II, and annular spacing portion II is located between the upper end of mounting hole and annular spacing portion I.
Further, the annular limiting part II is a rubber ring; the inner ring of the rubber ring is tightly matched with the upper end of the pin shaft, and the outer ring is in clearance fit with the inner wall of the mounting hole.
Furthermore, the branch of mounting bracket includes the arc section that suits with axle sleeve IV and the straight pole section of connecting mobile jib and arc section, and/or the section that is triggered of depression bar is the straight-bar, and the section that compresses tightly is the arc pole, and the fulcrum of rotation is the tie point of straight-bar and arc pole.
The working state of the underwater fixed-proportion trigger device of the sand sampler can be divided into the following parts:
1. before the device enters water, the buoyancy generated by the floating ball is zero, and the device cannot be powered;
2. in the process of falling of the device in water, the floating ball generates buoyancy and pulls the traction rope to move upwards to drive the pulley to rotate as power of the device, and in the process, the volute spiral spring arranged in the pulley stores energy for the device;
3. in the process of ascending in water, the volute spiral spring which stores energy is used as a power element to drive the pulley to rotate reversely, so that ascending power is provided for the device;
4. when the device rises to a preset water level and reaches a trigger condition, the four-bar mechanism of the device moves to enable the pull rope to pull the cylinder cover of the sand sampler to close the trigger mechanism, the cylinder cover of the sand sampler is closed, and sand taking is finished;
5. the device and the sand extractor continuously rise to the water surface.
Compared with the prior art, the underwater fixed-proportion trigger device of the sand sampler has the following advantages: mechanical automation is realized, the working intensity of workers is reduced, and the measuring time is shortened; the control precision is only related to the processing precision of parts, so that the influence of temperature drift, zero drift and the like of electronic devices on the control precision is avoided; the design of the whole set of control system can be simplified; the device has the advantages of simple structure, reliable performance, easy processing and manufacturing of parts, low cost and the like which are not possessed by electronic control.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of an underwater proportional trigger device for a sand sampler (without a floating ball and a pull rope) according to an embodiment of the invention;
FIG. 2 is a schematic view of the installation of the underwater scale trigger assembly of the sand sampler shown in FIG. 1;
FIG. 3 is an assembly view of a pulley and pulley mount in the underwater proportional trigger device of the sand sampler shown in FIG. 1;
FIG. 4 is an assembly view of a pin fixed wheel and a pin shaft in the underwater proportional trigger device of the sand sampler shown in FIG. 1;
FIG. 5 is an assembly view of the gear A, gear B and gear B parts of the underwater proportional trigger device of the sand sampler shown in FIG. 1;
FIG. 6 is a bottom plan view of the gear A, gear B and gear B components shown in FIG. 5;
FIG. 7 is an assembly view of gear C and gear D of the underwater proportional trigger device of the sand sampler shown in FIG. 1;
fig. 8 is a schematic structural diagram of a mounting frame in the underwater fixed-scale trigger device of the sand sampler shown in fig. 1.
Description of reference numerals:
101-bracket II; 102-scaffold I; 201-a pulley; 202-floating ball; 203-a hauling rope; 204-a scroll spring; 205-right angle reducer; 206-pulley mounts; 207-volute spring mounting shaft; 208-a bearing; 209-coupler; 301-axis I; 302-gear a; 303-gear C; 304-axis II; 305-pin fixed wheel; 306-gear D; 307-gear B; 308-a compression spring; 309-pin shaft; 310-arc groove I; 311-arc groove II; 312-sleeve I; 313-shaft sleeve II; 314-sleeve III; 315-shaft sleeve IV; 316-sealing cover; 317-rubber ring; 401-a mounting frame; 402-four-bar mechanism bar II; 403-four-bar mechanism bar III; 404-four-bar mechanism bar IV; 405-a first connector; 406-a second connector; 407-torsion spring; 408-a pressure bar; 409-pulling rope; 501-a suspension rod; 502-a sand sampler; 503-sand extractor mounting frame.
Detailed Description
The embodiment provides an underwater scaling triggering device of a sand sampler, which comprises a bracket part, a power part, a scaling part and a triggering part, as shown in fig. 1 to 7;
the stent section comprises a stent II 101;
the power part comprises a rotatable pulley 201, a floating ball 202 which penetrates through the suspension rod 501 and can move along the suspension rod 501, a traction rope 203 which is connected with the floating ball 202 and the outer wall of the pulley 201, a volute spring mounting shaft 207 which extends into the pulley 201 from an opening at the first end of the pulley 201 and does not rotate along with the pulley 201, a volute spring 204 and a right-angle reducer 205; the inner end of the scroll spring 204 is fixed on the scroll spring mounting shaft 207, and the outer end is fixed on the inner wall of the pulley 201; the input end of the right-angle reducer 205 is connected with the connecting shaft at the second end of the pulley 201;
the fixed proportion part comprises a shaft I301, a gear A302, a gear C303, a shaft II304, a pin fixing wheel 305, a gear D306, a gear B307, a compression spring 308 and a pin shaft 309; the shaft I301 is rotatably arranged on the bracket II101, and the bottom end of the shaft I extends out of the bracket II101 to be connected with an output shaft of the right-angle speed reducer 205; the gear A302 and the gear C303 are sleeved on the shaft I301 and can rotate along with the shaft I301; the shaft II304 is fixedly arranged on the bracket II 101; the pin fixing wheel 305 is sleeved on the shaft II304, and a damper is arranged between the pin fixing wheel and the shaft II 304; the gear D306 and the gear B307 are rotatably arranged on the shaft II304 and are respectively meshed with the gear C303 and the gear A302, the gears all adopt the same module and the same pressure angle, the meshed gears have the same center distance, and the tooth number of the gear A302 is larger than that of the gear C303; the gear D306 and the gear B307 are respectively provided with an arc-shaped groove I310 and an arc-shaped groove II 311; in the initial state (before entering water), only the ends of the arc-shaped groove I310 and the arc-shaped groove II311 are overlapped (one end or two ends can be overlapped); in the descending process in water, the gear D306 and the gear B307 rotate in the positive direction, and the overlapped part of the arc-shaped groove I310 and the arc-shaped groove II311 gradually increases; before rising in water and not triggering, the gear D306 and the gear B307 rotate reversely, and the overlapped part of the arc-shaped groove I310 and the arc-shaped groove II311 gradually decreases; the end part of the arc-shaped groove II311 is provided with a limiting part; a compression spring 308 is provided in the mounting hole of the pin securing wheel 305; the upper end of the pin shaft 309 is inserted into the mounting hole of the pin fixing wheel 305 and pressed against the compression spring 308; in an initial state, the pin shaft 309 penetrates through the overlapped end parts of the arc-shaped groove I310 and the arc-shaped groove II311, and the lower end of the pin shaft is clamped in the limiting part; in the process of descending in water, the pin 309 is separated from the lower side surface of the extended gear B307 from the limiting part under the pushing action of the end part of the arc-shaped groove I310 and the elastic force of the compression spring 308, and moves forwards along the arc-shaped groove II 311; before rising in water and not triggering, the pin 309 reversely moves along the arc groove II311 to return to the initial position to trigger the triggering part;
the triggering part comprises a mounting frame 401, a four-bar mechanism rod II402, a four-bar mechanism rod III403, a four-bar mechanism rod IV404, a first connecting piece 405, a second connecting piece 406, a torsion spring 407, a pressure rod 408 and a pull rope 409; the mounting frame 401 includes a main bar as a four-bar mechanism bar I in the four-bar mechanism and a branch bar extending from the main bar; the upper end surface of the four-bar mechanism rod IV404 is fixed on the lower side surface of the gear B307; the first connecting piece 405 sequentially passes through the upper end of the four-bar mechanism rod IV404, the first end of the main rod and the end of the support rod, and a torsion spring 407 is sleeved at a part between the first end of the main rod and the end of the support rod; the upper end of the four-bar linkage II402 is rotatably connected with the second end of the main bar through a second connecting piece 406; two ends of the four-bar mechanism rod III403 are respectively connected with the four-bar mechanism rod II402 and the four-bar mechanism rod IV404 through second connectors 406 in a rotating manner, and are connected with the main rod, the four-bar mechanism rod II402 and the four-bar mechanism rod IV404 to form a four-bar mechanism; the pressing rod 408 is rotatably arranged on the lower side surface of the gear B307 and comprises a triggered section pushed by the lower end of the pin 309 and a pressing section for pressing the rod body of the main rod between the fulcrum bar and the second end of the main rod; two ends of the pulling rope 409 are respectively connected with the cylinder cover closing trigger mechanism and the four-bar mechanism of the sand sampler 502, and the cylinder cover closing trigger mechanism is pulled under the driving of the four-bar mechanism.
The device is fixed on a sand sampler mounting frame 503, and the working principle of each part is as follows.
The power part, because the device and the sand extractor 502 are operated under water, the buoyancy of the floating ball 202 can be utilized to drive the pulley 201 to rotate forward in the process that the device enters water and descends, the volute spring 204 connected with the inner wall of the pulley 201 is subjected to bending moment to generate bending elastic deformation and torsion, and the volute spring 204 stores energy for the device to ascend in water; during the upward movement of the device in water, the spiral spring 204 after storing energy is used as a power element to drive the pulley 201 to rotate reversely, so as to provide power for the device. In order to prevent the floating ball 202 from floating everywhere in water and being incapable of driving the pulley 201 to rotate, the device enables the floating ball 202 to penetrate through the suspension rod and ensures that the floating ball 202 can move along the suspension rod; to ensure that the volute spiral spring mounting shaft 207 does not rotate with the pulley 202 during the forward rotation of the pulley 202; since the angular velocity of the traction rope 203 when driving the pulley 201 to rotate is high and the torque is small, a speed reducer is required to reduce the speed input by the pulley 201 and increase the torque, and in the structural design, because the problem of motion reversing is involved, the rotation of the pulley 201 is converted into the rotation of the shaft I301 by the right-angle speed reducer 205.
The fixed ratio part is set as Z for the number of teeth of the gear A302 and the gear C303 on the shaft I3011And Z3(ii) a And is provided with a number of teeth Z1>Z3The number of teeth of the gear B307 meshing with the gear A302 is Z2The number of teeth of the gear D306 engaged with the gear C303 is Z4The gears all adopt the same module and the same pressure angle, the meshed gear pairs have the same center distance, and Z is1=Z4，Z2=Z3The gear a302 and the gear C303 are coaxial, the angular speed of rotation is the same, since the gear pitch circle radius of the gear a302 is larger than the gear pitch circle radius of the gear C303, under the condition of the same angular speed, the linear speed of rotation of the gear a302 is larger than the linear speed of the gear C303, and since the gear C303 and the gear D306 have the same linear speed, the gear a302 and the gear B307 also have the same linear speed, and the gear pitch circle radius of the gear B307 is smaller than the pitch circle radius of the gear D306, the angular speed of the gear B307 is larger than the angular speed of the gear D306, and the transmission ratio is calculated as follows:
in the formula:
-the gear ratio of gear a302 to gear B307;
-the gear ratio of gear C303 to gear D306;
-the gear ratio of gear D306 to gear B307;
-the angular speed of rotation of gear a 302;
-the angular speed of rotation of gear B307;
-the angular speed of rotation of gear C303;
-angular speed of rotation of gear D306; z1-the number of teeth of gear a 302; z2-the number of teeth of gear B307; z3-the number of teeth of gear C303; z4-the number of teeth of gear D306;
the ends of the pin 309 passing through the arc-shaped groove I310 and the arc-shaped groove II311 are respectively arranged as
And
under the cooperation of the pin fixing wheel 305 and the limiting part, the pin 309 is in a pressed and incompletely-extended state in an initial state (at this time, the compression spring 308 is compressed, and the part of the pin 309 extending into the arc-shaped groove II311 does not exceed the side surface, namely the lower side surface, of the gear B307 provided with the triggering part), so that the device cannot be triggered; in the process of falling when the device enters water, the angular speed of the gear B307 is greater than the angle of the gear D306Speed, the pin shaft 309 can only be pushed by the gear D306 and slides along the arc groove II311 on the gear B307, and when the pin shaft 309 rotates through a set small radian and then breaks away from the limiting part, the pin shaft 309 completely extends out under the action of the compression spring 308, so as to meet one of the triggering conditions; upon reaching the bottom position, gear B307 rotates over
Angle of (D) gear D306 rotates past
Assuming that the pin 309 now rotates within the arcuate groove II311 of the gear B307
At the angle of (a) to (b),
、
and
the following relations exist between the following components:
in the formula:
the angle the pin turns in the curved groove II311 of the gear B307 when reaching the bottom from the water surface;
the angle that gear B307 turns when it reaches the bottom from the surface;
the angle through which gear D306 turns when reaching the bottom from the surface;
-the gear ratio of gear D306 to gear B307;
because the damping is arranged between the pin fixing wheel 305 and the shaft II304, the pin fixing wheel cannot rotate around the rotation center of the shaft II304 under the condition of no external force, before the device rises in water and is not triggered, the gear D306 and the gear B307 rotate reversely, the arc-shaped groove I310 on the gear D306 cannot push the pin shaft 309 to rotate, and the arc-shaped groove II311 on the gear B307 cannot push the pin shaft 309 similarly, so the pin shaft 309 is fixed, and the pin shaft B307 rotates reversely
At angle (d), the pin 309 returns
Pressing the pressing rod 408 to satisfy the second condition of triggering, triggering the triggering part,
substituting the formula (1-5) into the formula (1-4) to obtain
In the formula:
the angle that gear B307 turns when reaching the bottom from the surface of the water reflects the depth of the water
；
The angle of the pin rotating in the arc groove II311 of the gear B307 when the water surface reaches the water bottom and the angle of the gear B307 rotating reversely when the water surface reaches the triggering position reflect the depth of the triggering position from the water bottom
(ii) a The depth of the trigger position from the water surface is set as
Then there is
From the formulas (1-7)
Therefore, it is
In the formula:
-water depth;
-the depth of the trigger position from the water bottom;
-depth of the trigger position from the surface;
therefore, the percentage of the sand-taking water level to the water depth can be preset
And determining the tooth number of each gear according to specific working conditions, processing to obtain the gears, and further realizing the accurate control of the preset water level of the water taking barrel.
Before the trigger part is not triggered, the pressing section of the pressing rod 408 presses the mounting frame 401, after the device reaches a preset water level, the pin shaft 309 which is completely extended pushes the pressing rod 408 to rotate, so that the mounting frame 401 pressed by the pressing rod 408 is gradually released, after the mounting frame 401 is completely released, the mounting frame can move in the direction away from the lower side face of the gear B307 by taking the first connecting piece 405 as a rotation center under the action of the torsion spring 407, the first connecting piece 405 is taken as a motive power piece of the four-bar mechanism, so that the four-bar mechanism moves, and by utilizing the principle that the included angle of the diagonal line is reduced and the length of the diagonal line is increased, when the diagonal line is increased to a certain length, the pulling rope 409 pulls the cylinder cover closing trigger mechanism to close the cylinder cover of the sand.
Further, as shown in fig. 3, the power section further includes a pulley mount 206; the volute spring mounting shaft 207 has a cover plate that is fixed to the pulley mounting seat 206 to close the opening at the first end of the pulley 201, while fixing the volute spring mounting shaft 207 so that it does not rotate with the pulley 201.
Further, as shown in fig. 3, the pulley mount 206 is a bearing seat; the power section also includes a bearing 208 mounted in a bearing housing; a first end of the pulley 201 is fixedly connected with an inner race of the bearing 208 to reduce rotational friction.
Further, as shown in fig. 1, the bracket portion further includes a bracket I102 for mounting a pulley mount 206 and a right-angle reducer 205; the bracket II101 is arranged on the bracket I102; flanges for mounting the pulley 201 are arranged on the pulley mounting seat 206 and the bracket I102.
Further, the hauling rope 203 is a steel wire rope.
Further, as shown in fig. 1, the power section further includes a coupling 209 for connecting an output shaft of the right-angle reducer 205 with the shaft I301.
Further, the right angle reducer 205 is selected to satisfy: during the process of the device descending to the water bottom, the part of the arc-shaped groove I310 on the gear B307 and the part of the arc-shaped groove II311 on the gear D306 are overlapped all the time
Further, the tooth number of the gear A302, the gear B307, the gear C303 and the gear D306 is determined according to the percentage of the sand water level to the water depth and the working condition.
Further, as shown in fig. 6, the limiting part at the end of the arc-shaped groove II311 is a U-shaped limiting part protruding inwards.
Further, as shown in fig. 1, the scaling part further comprises a bushing I312 for connecting the shaft I301 and the through hole I of the bracket II101, a bushing II313 for connecting the upper end of the shaft II304 and the through hole II of the bracket II101, a bushing III314 disposed between the pin fixing wheel 305 and the gear D306, and/or a bushing IV315 for connecting the lower end of the shaft II304 and the through hole II of the bracket II 101. The shaft sleeve I312 is used for limiting the axial movement of the shaft I301, so that the shaft I301 can only rotate around the rotation center of the through hole I on the bracket II 101. The sleeve II313 and the sleeve IV315 fix the shaft II304 on the bracket II101 and do not rotate along with the rotation of the gear B307 and the gear D306. Bushing III314 axially locates gear D306 and pin retainer wheel 305.
Further, as shown in fig. 4, the mounting hole of the pin fixing pulley 305 is a through hole; the proportional part further includes a cover 316 for closing the upper end of the mounting hole.
Further, as shown in fig. 4, in order to facilitate the opening of the pin fixing pulley 305 with a mounting hole and the mounting of the compression spring 308 and the cover 316, the pin fixing pulley 305 has a boss.
Further, an annular limiting part I protruding inwards is arranged on the inner wall of the lower end of the mounting hole; the upper end of round pin 309 is provided with the spacing portion of outside bellied annular II, and spacing portion of annular II is located between the upper end of mounting hole and the spacing portion of annular I, makes round pin 309 rotate around the centre of rotation of self in the mounting hole, and can remove along perpendicular to round pin tight pulley 305 direction. The annular limiting portion I and the annular limiting portion II effectively prevent the pin 309 from falling off after being completely extended out.
Further, as shown in fig. 4, the annular limiting part II is a rubber ring 317; the inner ring of the rubber ring 317 is tightly fitted with the upper end of the pin 309, and the outer ring is in clearance fit with the inner wall of the mounting hole. When the rubber ring 317 is worn, the anti-falling device can be replaced to ensure the effectiveness of anti-falling.
Further, as shown in fig. 8, the rod of the mounting block 401 includes an arc-shaped section corresponding to the bushing IV315 and a straight rod section connecting the main rod and the arc-shaped section. The arc-shaped section is arranged along the bushing IV 315.
Further, as shown in fig. 6, the triggered section of the pressing rod 408 is a straight rod, the pressing section is an arc-shaped rod, and the rotation fulcrum is a connection point of the straight rod and the arc-shaped rod. The arc-shaped pressing section can effectively realize pressing and can release the mounting frame 401 by rotating a small angle.
Further, the first connector 405 and the second connector 406 are both pin pins.
Further, as shown in fig. 5, the pulling rope 409 is connected to a point c of the four-bar mechanism. When the four-bar mechanism moves, the four-bar mechanism rod IV404 is fixed, the movement displacement variation of the point c is the largest, and larger pulling force can be applied to the pulling rope 409.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a get sand ware and decide proportion trigger device under water which characterized in that: comprises a bracket part, a power part, a fixed proportion part and a trigger part;
the scaffold moiety comprises scaffold II;
the power part comprises a rotatable pulley, a floating ball which penetrates through the suspension rod and can move along the suspension rod, a traction rope which is connected with the floating ball and the outer wall of the pulley, a volute spiral spring mounting shaft which extends into the pulley from an opening at the first end of the pulley and does not rotate along with the pulley, a volute spiral spring and a right-angle speed reducer;
the inner end of the volute spiral spring is fixed on the volute spiral spring mounting shaft, and the outer end of the volute spiral spring is fixed on the inner wall of the pulley;
the input end of the right-angle speed reducer is connected with the connecting shaft at the second end of the pulley;
the fixed proportion part comprises a shaft I, a gear A, a gear C, a shaft II, a pin fixing wheel, a gear D, a gear B, a compression spring and a pin shaft;
the shaft I is rotatably arranged on the support II, and the bottom end of the shaft I extends out of the support II to be connected with an output shaft of the right-angle speed reducer;
the gear A and the gear C are sleeved on the shaft I and can rotate along with the shaft I;
the shaft II is fixedly arranged on the bracket II;
the pin fixing wheel is sleeved on the shaft II, and a damper is arranged between the pin fixing wheel and the shaft II;
the gear D and the gear B are rotatably arranged on the shaft II and are respectively meshed with the gear C and the gear A, the gears adopt the same modulus and the same pressure angle, the meshed gear pairs have the same center distance, and the number of teeth of the gear A is greater than that of the gear C;
the gear D and the gear B are respectively provided with an arc-shaped groove I and an arc-shaped groove II; in an initial state, only the end parts of the arc-shaped groove I and the arc-shaped groove II are superposed; in the descending process in water, the gear D and the gear B rotate in the positive direction, and the overlapped part of the arc-shaped groove I and the arc-shaped groove II is gradually increased; before rising in water and not triggering, the gear D and the gear B rotate reversely, and the overlapped part of the arc-shaped groove I and the arc-shaped groove II is gradually reduced;
the end part of the arc-shaped groove II is provided with a limiting part;
the compression spring is arranged in the mounting hole of the pin fixing wheel;
the upper end of the pin shaft is inserted into the mounting hole of the pin fixing wheel and pressed against the compression spring; in an initial state, the pin shaft penetrates through the superposed end part of the arc-shaped groove I and the arc-shaped groove II, and the lower end of the pin shaft is clamped in the limiting part; in the process of descending in water, the pin shaft is separated from the lower side surface of the extending gear B from the limiting part under the pushing action of the end part of the arc-shaped groove I and the elastic force action of the compression spring and moves along the positive direction of the arc-shaped groove II; before rising in water and not triggering, the pin shaft reversely moves along the arc-shaped groove II to return to the initial position to trigger the triggering part;
the trigger part comprises a mounting rack, a four-bar mechanism rod II, a four-bar mechanism rod III, a four-bar mechanism rod IV, a first connecting piece, a second connecting piece, a torsion spring, a pressure lever and a pull rope;
the mounting rack comprises a main rod serving as a four-bar mechanism rod I in the four-bar mechanism and a branch rod extending from the main rod;
the upper end surface of the four-bar mechanism rod IV is fixed on the lower side surface of the gear B;
the first connecting piece sequentially penetrates through the upper end of the four-bar mechanism rod IV, the first end of the main rod and the end part of the supporting rod, and the torsion spring is sleeved on the part between the first end of the main rod and the end part of the supporting rod;
the upper end of the four-bar mechanism bar II is rotatably connected with the second end of the main bar through a second connecting piece;
two ends of the four-bar mechanism rod III are respectively connected with a four-bar mechanism rod II and a four-bar mechanism rod IV in a rotating way through second connecting pieces, and are connected with the main rod, the four-bar mechanism rod II and the four-bar mechanism rod IV to form the four-bar mechanism;
the pressing rod is rotatably arranged on the lower side surface of the gear B and comprises a triggered section and a pressing section, the triggered section is pushed by the lower end of the pin shaft, and the pressing section is used for pressing the rod body of the main rod between the branch rod and the second end of the main rod;
two ends of the pull rope are respectively connected with a cylinder cover closing trigger mechanism of the sand sampler and the four-bar mechanism, and the cylinder cover closing trigger mechanism is pulled under the driving of the four-bar mechanism.
2. The sand extractor underwater scaling trigger device of claim 1, wherein: the power part also comprises a pulley mounting seat;
the volute spiral spring mounting shaft is provided with a cover plate, and the cover plate is fixed on the pulley mounting seat to seal an opening at the first end of the pulley.
3. The sand extractor underwater scaling trigger device of claim 2, wherein: the pulley mounting seat is a bearing seat;
the power section further comprises a bearing mounted within the bearing housing;
and the first end of the pulley is fixedly connected with the inner ring of the bearing.
4. The sand extractor underwater scaling trigger device of claim 3, wherein: the bracket part also comprises a bracket I for mounting the pulley mounting seat and the right-angle speed reducer;
the bracket II is arranged on the bracket I;
and flanges for mounting the pulleys are arranged on the pulley mounting seat and the bracket I.
5. The sand extractor underwater scaling trigger device of any one of claims 1-4, wherein: the power part also comprises a coupling for connecting an output shaft of the right-angle speed reducer with the shaft I.
6. The sand extractor underwater scaling trigger device of claim 1, wherein: the fixed proportion part also comprises a shaft sleeve I for connecting the through hole I on the shaft I and the bracket II, a shaft sleeve II for connecting the upper end of the shaft II and the through hole II on the bracket II, a shaft sleeve III arranged between the pin fixing wheel and the gear D and/or a shaft sleeve IV for connecting the lower end of the shaft II and the through hole II on the bracket II.
7. The sand extractor underwater scaling trigger device of claim 6, wherein: the mounting hole on the pin fixing wheel is a through hole;
the proportional part also comprises a sealing cover for sealing the upper end of the mounting hole.
8. The sand extractor underwater scaling trigger device of claim 1 or 7, wherein: an annular limiting part I which protrudes inwards is arranged on the inner wall of the lower end of the mounting hole;
the upper end of round pin axle is provided with outside bellied annular spacing portion II, just annular spacing portion II is located between the upper end of mounting hole and annular spacing portion I.
9. The sand extractor underwater scaling trigger device of claim 8, wherein: the annular limiting part II is a rubber ring;
the inner ring of the rubber ring is tightly matched with the upper end of the pin shaft, and the outer ring is in clearance fit with the inner wall of the mounting hole.
10. The sand extractor underwater scaling trigger device of claim 6, wherein: the branch of the mounting rack comprises an arc-shaped section matched with the shaft sleeve IV and a straight rod section connecting the main rod and the arc-shaped section, and/or
The triggered section of the pressure lever is a straight lever, the pressing section is an arc-shaped lever, and the rotating fulcrum is a connecting point of the straight lever and the arc-shaped lever.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376605.9A CN108918185B (en) | 2018-04-25 | 2018-04-25 | Underwater proportional trigger device of sand extractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376605.9A CN108918185B (en) | 2018-04-25 | 2018-04-25 | Underwater proportional trigger device of sand extractor |
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| Publication Number | Publication Date |
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| CN108918185A CN108918185A (en) | 2018-11-30 |
| CN108918185B true CN108918185B (en) | 2021-02-05 |
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| CN201810376605.9A Expired - Fee Related CN108918185B (en) | 2018-04-25 | 2018-04-25 | Underwater proportional trigger device of sand extractor |
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| CN112345303B (en) * | 2020-10-10 | 2022-06-07 | 山东元通监测有限公司 | Sealed sewage detection sampling device capable of randomly adjusting sampling depth |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201773017U (en) * | 2010-08-23 | 2011-03-23 | 郭林 | Oil tank sampler |
| CN203366141U (en) * | 2013-06-06 | 2013-12-25 | 徐晨光 | Trigger mechanism of water level switch |
| CN103411791B (en) * | 2013-07-18 | 2015-09-16 | 中国科学院广州地球化学研究所 | One manually rams assisted gravity formula cylindrical sediment collector |
| CN203644618U (en) * | 2013-11-21 | 2014-06-11 | 湖南科技大学 | Full-automatic starting/stopping trigger device for underwater equipment |
| CN203745173U (en) * | 2014-01-24 | 2014-07-30 | 张玉胜 | Automatic feeding and removing device of small drop hammer type impact test machine |
| CN104614203B (en) * | 2014-12-30 | 2017-03-29 | 浙江省海洋水产研究所 | Trigger-type seabed water sampling system |
| CN105606395A (en) * | 2015-11-16 | 2016-05-25 | 太原理工大学 | Manual type mechanical-gear soil sampler for filling soil sample |
| CN105510082B (en) * | 2015-12-15 | 2018-02-13 | 浙江省海洋水产研究所 | A kind of marine environmental monitoring unmanned plane sampling apparatus |
| CN105928742B (en) * | 2016-05-07 | 2018-08-14 | 浙江大学 | Static pressure trigger-type deep-sea hydrophore |
| US20170328814A1 (en) * | 2016-05-16 | 2017-11-16 | Hatch Ltd. | Apparatus connecting a water sample bottle to an unmanned aerial vehicle (uav) in order to collect water samples from below the surface of a water body |
| CN206348170U (en) * | 2016-11-07 | 2017-07-21 | 於航成 | It is a kind of that depth of water original state water sample collection instrument is determined based on wireless communication technology |
| CN106769199A (en) * | 2016-12-08 | 2017-05-31 | 杨田文 | A kind of quick water fetching device of water quality detection |
| CN107600291A (en) * | 2017-08-08 | 2018-01-19 | 邬冯值 | Mechanical triggering power assisting device |
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