Multi-bin riverbed quality fidelity sampling system

Abstract

The invention relates to a multi-bin riverbed quality fidelity sampling system, which comprises a turntable, a shaft sleeve, a rotary thrust device, an anti-rotation switch mechanism and a suspension structure, and is characterized in that a plurality of mounting seats are arranged on the turntable, and one sampler is clamped on one mounting seat; a rotating shaft is vertically arranged in the center of the turntable; a sample inlet is formed in the lower end of the sampler, a floating rod is arranged in the sampler, the lower end of the sampler is a conical head, the floating rod is matched with an elastic piece, and the conical head can open the sample inlet after being subjected to upward acting force and can automatically reset to close the sample inlet after the acting force is relieved. The rotating shaft penetrates through the shaft sleeve, and the end, located in the shell, of the rotating shaft is in transmission fit with the power mechanism. A first connecting piece and a second connecting piece of the hanging structure are provided with a first connecting part and a second connecting part which are used for being connected with a fish lead respectively. According to the sampling system, the problem of sand sample loss after sampling can be avoided, the riverbed quality fidelity is improved, and the sampling efficiency is improved by alternately sampling through a plurality of samplers.

Description

Technical Field

[0001] The invention relates to the technical field of riverbed quality sampling, and in particular to a multi-position riverbed quality fidelity sampling system. Background Art

[0002] Hydrological cableways play an important role in hydrological monitoring, providing important and detailed hydrological data for national flood control and engineering construction applications. Riverbed quality sampling is an important task in hydrological data. The particle grading of riverbed quality is related to river regulation research, hydrological law research and reservoir operation decision research. At present, the hydrological cableway mainly relies on anchor samplers to dig riverbed quality in the river. The open sampling method cannot guarantee the sampling accuracy and representativeness of riverbed quality. After sampling, the sampler cannot close the mouth. During the lifting process, most of the sand samples are washed away by the water after a long time of movement in the water body, leaving the sand that is not heavy enough and not representative. The cableway sampling requires a long sampling time, and only one water sample can be taken at a time, which cannot improve the efficiency of riverbed quality sampling. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-bin riverbed quality assurance sampling system to solve the problems of sand sample flowing away during the sampling process, resulting in lack of representativeness, and low sampling efficiency.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-position riverbed quality assurance sampling system, comprising a turntable, a shaft sleeve, a rotary thrust device, an anti-rotation switch mechanism and a suspension structure, a plurality of mounting seats are arranged at intervals along the circumferential direction of the turntable, and one mounting seat is used to clamp one sampler; a rotating shaft is arranged vertically at the center of the turntable;

[0005] The sampler comprises a chamber for containing the collected riverbed material, a sample inlet is arranged at the lower end of the chamber, a floating rod is arranged in the chamber, the lower end of the floating rod is a conical head, the floating rod cooperates with the elastic member, the conical head can open the sample inlet after being subjected to an upward force, and can automatically reset to close the sample inlet after the force is released;

[0006] The rotary thrust device comprises a housing, a power mechanism is arranged in the housing, one end of a shaft sleeve is fixed to the housing, the shaft passes through the shaft sleeve, and one end of the shaft located in the housing is in transmission cooperation with the power mechanism;

[0007] The anti-rotation switch mechanism comprises an anti-rotation structure for fixing on the rotating disk, a clamping piece selectively matched with the anti-rotation structure for preventing rotation, and the clamping piece has an anti-rotation position matched with the anti-rotation structure for preventing rotation and a rotatable position separated from the anti-rotation structure;

[0008] The suspension structure includes a first connecting member and a second connecting member. The first connecting member is provided with a plurality of first connecting holes along its length direction, and the second connecting member is provided with a plurality of second connecting holes along its length direction. The second connecting holes are selectively connected to the first connecting holes to adjust the total length of the first connecting member and the second connecting member. The first connecting member and the second connecting member are respectively provided with a first connecting part and a second connecting part for connecting to the hanging point of the lead fish. The first connecting member is provided with a clamp structure for connecting to the shaft sleeve.

[0009] Furthermore, a handle assembly is provided at the upper end of the floating rod, and the handle assembly includes a pull rod and a limit block. One end of the pull rod extends into the warehouse body and cooperates with the upper end of the floating rod, and the limit block is located outside the warehouse body; a support block is provided on the upper end surface of the warehouse body, and the limit block can be supported on the support block after being pulled out a certain distance, and a pull ring is provided on the limit block.

[0010] Furthermore, a first conical opening is provided on the lower side of the injection port in the chamber body, and a second conical opening is provided on the upper side of the injection port; the first conical opening is small at the top and large at the bottom, and the second conical opening is large at the top and small at the bottom; a sealing gasket is provided on the conical head, and when the conical head closes the injection port, the sealing gasket is pressed against the transition connection between the first conical opening and the injection port.

[0011] Furthermore, the power mechanism includes a clutch mechanism, an electric push rod and a transmission member. The clutch mechanism includes a fixed clutch plate, a movable clutch plate and a rotating power plate arranged in sequence. The movable clutch plate is a rotation-stop assembly on a rotating shaft. The fixed clutch plate and one side of the movable clutch plate are in a one-way rotation-stop fit, and the other side of the movable clutch plate and the rotating power plate are in a one-way transmission fit. A transmission part is provided on the rotating power plate, and the telescopic rod of the electric push rod cooperates with the transmission part on the rotating power plate through the transmission member.

[0012] Furthermore, a first through hole is provided in the center of the fixed clutch plate for the shaft to pass through, and at least one first tooth portion is provided on the side of the fixed clutch plate facing the movable clutch plate, and the first tooth portion has a first limiting tooth surface and a first sliding matching surface; a second through hole is provided in the center of the movable clutch plate, and the shaft passes through the second through hole and cooperates with the second through hole to stop rotation, and a plurality of second tooth portions are provided on both sides of the movable clutch plate, and each second tooth portion is distributed along the circumference with the shaft as the center, and the second tooth portion has a second limiting tooth surface and a second sliding matching surface; a There is a third through hole, and the rotating shaft passes through the third through hole. The rotating power plate and the rotating shaft are rotatably assembled. A plurality of third tooth portions are provided on the side of the rotating power plate facing the movable clutch plate. The third tooth portions are distributed along the circumference with the rotating shaft as the center, and the third tooth portion has a third limiting tooth surface and a third sliding matching surface; when the rotating power plate rotates counterclockwise, the third limiting tooth surface cooperates with the second limiting tooth surface to drive the movable clutch plate to rotate synchronously; a stopper is provided at one end of the rotating shaft, and a spring is provided between the stopper and the rotating power plate, and the spring sleeve is arranged on the rotating shaft.

[0013] Furthermore, the transmission part is a transmission rod, one end of the transmission member is connected to the telescopic rod of the electric push rod, and the other end is provided with a bayonet, which is movably clamped on the transmission rod, and the telescopic action of the electric push rod can drive the transmission rod to rotate.

[0014] Furthermore, the clamping part adopts a chuck, which is anti-rotationally slidably assembled on the sleeve, and a positioning ring is fixed on the sleeve, and a power piece is arranged between the positioning ring and the chuck; the side of the chuck facing the rotating disk is provided with a meshing structure cooperating with the anti-rotation structure, and the other side is provided with a slope, and an elastic piece is connected between the positioning ring and the chuck; the power piece includes a rotating ring and a force-bearing part connected to the rotating ring, the force-bearing part is extended outward along the radial direction of the sleeve, the rotating ring is sleeved on the sleeve, and a driving protrusion is provided on the side of the rotating ring facing the chuck, and the driving protrusion is used to contact and cooperate with the slope; when the force-bearing part is rotated around the sleeve under the action of external force, the chuck moves axially along the sleeve, and the meshing structure on the chuck cooperates with the anti-rotation structure to stop rotation; when the force-bearing part is not affected by external force, the chuck disengages from the anti-rotation structure under the action of the elastic piece.

[0015] Furthermore, the anti-rotation structure includes a disk body, which is provided with a plurality of first protrusions, and the first protrusions are distributed at intervals along the circumference; the engaging structure includes a plurality of second protrusions, and the second protrusions are distributed at intervals along the circumference, and the second protrusions are used to cooperate with the anti-rotation grooves formed between two adjacent first protrusions.

[0016] Furthermore, there are two slope surfaces which are symmetrically arranged about the center of the chuck, and the slope surfaces are located on the semicircular ring of the chuck; the end of the driving protrusion is a round head for contacting the slope surface; the side where the slope surface of the semicircular ring is located has a high point and two low points, so that when the force-bearing part rotates or under the action of the elastic member, the chuck is driven to move axially along the sleeve.

[0017] Furthermore, the mounting seat includes a first mounting groove and a second mounting groove, a limiting surface is formed between the first mounting groove and the second mounting groove, and the first mounting groove is provided with a limiting platform at an end away from the second mounting groove. The first mounting groove and the second mounting groove are respectively provided for corresponding parts of the sampler to be inserted, and the limiting surface and the limiting platform respectively limit the sampler in the upward and downward directions; a connecting piece is also provided on the mounting seat to prevent the sampler from escaping from the mounting seat.

[0018] Beneficial effects of the present invention:

[0019] (1) Use the existing hydrological cableway lead fish to carry the sampler to the riverbed and lift it to the water surface at the sampling location. Before sampling, the sampler's sampling port is closed to avoid collecting non-riverbed sediment; the sampling part of the sampler is pressed into the riverbed sediment layer by the gravity of the lead fish, and the conical head is automatically moved upward and away from the sampling port, so that the sampling port is opened for sampling; after sampling, the sampler rises, the upward force on the conical head disappears, and the conical head automatically falls down and blocks the sampling port due to the force of the elastic part, ensuring that the sand sample does not leak, making the collected sediment representative and improving the authenticity of the riverbed quality. The opening and closing of the sampler is completed automatically, without manual operation, and is easy to use.

[0020] (2) The design has multiple installation structures, which can install multiple samplers at the same time. When sampling, each sampler can be used in turn, and multiple water samples can be obtained at one time, saving time and thus improving sampling efficiency.

[0021] (3) When the sampler is used underwater, the force-bearing part of the power component can rotate around the sleeve at a certain angle under the impact of the water flow. When the rotating ring rotates, its driving protrusion will push the chuck and move along the axial direction of the sleeve. The meshing structure on the chuck extends into the anti-rotation structure to achieve anti-rotation cooperation and prevent the turntable from rotating underwater. When one of the samplers of the sampling device has completed sampling, the sampling device as a whole is lifted out of the water. The force-bearing part of the power component is no longer affected by the impact of the water flow and rotates around the sleeve at a certain angle in the opposite direction by gravity. The driving protrusion on the power component no longer pushes the chuck. The chuck is reset under the action of the elastic member, that is, it moves in the direction of the positioning ring. Finally, the chuck is separated from the anti-rotation structure. After the limit is released, the turntable can be driven by the power mechanism to rotate a certain angle to switch to another sampler for sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a three-dimensional diagram of the multi-bin riverbed quality assurance sampling system;

[0023] Figure 2 yes Figure 1 A stereoscopic image of a sampler

[0024] Figure 3 is a cross-sectional view of the sampler (with the injection port closed);

[0025] Figure 4 is a cross-sectional view of the sampler (with the injection port open);

[0026] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0027] Figure 6 It is a cross-sectional view of the sampler (the state after the pull rod is moved upward);

[0028] Figure 7 It is a structural diagram of the tie rod assembly;

[0029] Figure 8 It is a stereogram of the end seat;

[0030] Fig. 9 Here is another structural view of the cone head;

[0031] Fig.10 It is a schematic diagram of the sampler installation structure cooperating with six samplers;

[0032] Fig.11 It is a schematic diagram of the sampler installation structure (without sampler installed);

[0033] Fig.12 yes Fig.11 A perspective view of the middle mounting seat;

[0034] Fig.13 It is a three-dimensional diagram of the hanging structure;

[0035] Fig.14 is a three-dimensional diagram of a first connecting member;

[0036] Fig.15 is a perspective view of a second connecting member;

[0037] Fig.16 is a three-dimensional view of a first clamp member;

[0038] Fig.17 is a three-dimensional view of a second clamp member;

[0039] Fig.18 It is a schematic diagram of the application of the sampler anti-rotation switch mechanism on the sampling device;

[0040] Fig.19is a three-dimensional diagram of the anti-rotation switch mechanism;

[0041] Fig. 20 yes Fig.19 A three-dimensional diagram of the middle anti-rotation structure;

[0042] Fig.21 yes Fig.19 A three-dimensional view of the middle chuck;

[0043] Fig. 22 yes Fig.19 The middle is a three-dimensional diagram of the power parts;

[0044] Fig.23 yes Fig.19 A stereogram of the center positioning circle;

[0045] Fig.24 It is a partial structural view of the rotary thrust device;

[0046] Fig.25 yes Fig.24 Partial view in ;

[0047] Fig.26 It is an exploded schematic diagram of the clutch mechanism;

[0048] Fig. 27 It is a three-dimensional diagram of the fixed clutch plate;

[0049] Fig.28 It is a three-dimensional picture of the movable clutch plate

[0050] Fig.29 It is a three-dimensional picture of the rotating power piece;

[0051] Fig.30 It is a three-dimensional diagram of the tie rod;

[0052] Fig.31 This is a distribution diagram of reed switches.

[0053] 1. Suspension structure; 11. First connecting member; 111. First connecting portion; 112. First connecting hole; 113. Slot; 12. Second connecting member; 121. Second connecting portion; 122. Insert plate; 123. Second connecting hole; 13. First clamp; 131. Third connecting hole; 132. Stud; 133. Slot; 134. Fastening portion; 14. Second clamp; 141. Semicircular portion; 142. Insert hole;

[0054] 2. Bushing;

[0055] 3. Turntable; 31. Rotating shaft;

[0056] 4. Sampler; 41. Chamber; 42. Arc plate; 43. End seat; 44. Support block; 45. Guide sleeve; 46. Inlet; 47. First conical port; 48. Second conical port;

[0057] 5. Handle assembly; 51. Conical head; 511. Sealing pad; 512. Guide surface; 52. Floating rod; 521. End plate; 53. Positioning member; 54. Pull rod; 541. Limiting part; 55. First spring; 56. Pull ring; 57. Limiting block; 58. O-ring;

[0058] 6. Mounting seat; 61. Bolt; 62. Second mounting groove; 63. Limiting surface; 64. First mounting groove;

[0059] 65. Accommodating groove; 66. Auxiliary limiting plate; 67. Limiting platform;

[0060] 7. Anti-rotation switch mechanism; 71. Anti-rotation structure; 711. Plate; 712. First protrusion; 713. Anti-rotation groove; 72. Chuck; 721. First pin; 722. Second protrusion; 723. Slope; 7231. High point; 7232. Low point; 73. Second spring; 74. Positioning ring; 741. Second pin; 75. Power member; 751. Force-bearing part; 752. Rotating ring; 753. Driving protrusion;

[0061] 8. Shell; 81. Cylinder; 82. Cover plate; 83. Guide rail;

[0062] 9. Power mechanism; 91. Electric push rod; 92. Transmission member; 921. Boss; 922. Bayonet; 93. Fixed clutch plate; 931. First tooth portion; 9311. First limit tooth surface; 9312. First sliding mating surface; 932. First through hole; 94. Movable clutch plate; 941. Second tooth portion; 9411. Second limit tooth surface; 9412. Second sliding mating surface; 942. Second through hole; 943. Magnetic steel; 95. Rotating power plate; 951. Transmission rod; 952. Third tooth portion; 9521. Third limit tooth surface; 9522. Third sliding mating surface; 953. Third through hole; 96. Third spring; 97. Baffle; 98. Limit bolt; 99. Reed switch. DETAILED DESCRIPTION

[0063] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0064] Embodiments of the present invention:

[0065] like Figure 1As shown, a multi-position riverbed quality assurance sampling system includes a turntable 3, a sleeve 2, a rotary thrust device, an anti-rotation switch mechanism 7 and a suspension structure 1. The turntable 3 is provided with a plurality of mounting seats 6 spaced along its circumferential direction, and one mounting seat 6 is used to clamp a sampler 4. A rotating shaft 31 is vertically provided at the center of the turntable 3, and the rotating shaft 31 passes through the sleeve 2. The sleeve 2 is fixed, and the rotating shaft 31 is rotatable and driven by the rotary thrust device. The rotating shaft 31 is used to drive the turntable 3 to rotate synchronously at a certain angle to switch the samplers 4 to take samples in turn. The suspension structure 1 is connected to the existing hydrological cableway lead fish, and the sampler 4 enters the water with the lead fish. The structures of the main parts are described in detail below.

[0066] like Figures 2 to 9 As shown, the sampler 4 includes a chamber 41 for accommodating the collected riverbed material. The chamber 41 is cylindrical in shape as a whole. A sample inlet 46 is provided at the lower end of the chamber 41. A floating rod 52 is provided inside the chamber 41. The lower end of the floating rod 52 is a conical head 51. The floating rod 52 cooperates with the elastic member, and the floating rod 52 can move axially along the chamber 41 after being subjected to force. The conical head 51 can open the sample inlet 46 after being subjected to an upward force, and can automatically reset to close the sample inlet 46 after the force is released. When in use, a sampler 4 in a working position is vertically arranged with the conical head 51 facing downward. The lower end of the sampler 4 is pressed into the riverbed sediment layer by the gravity of the lead fish. The conical head 51 of the floating rod 52 moves upward under the upward force, and the conical head 51 leaves the sample inlet 46, so that the sample can be injected. After sampling, the sampler 4 rises with the lead fish, and the floating rod 52 can move down quickly under the action of the elastic member and block the sample inlet 46 to ensure that the sand sample is not lost and the collected sediment is representative.

[0067] Figure 3 As shown, a positioning member 53 is provided in the chamber body 41, and the floating rod 52 passes through the positioning member 53 and is fixed thereto. A sliding fitting portion is provided on the outer edge of the positioning member 53, which is used to slide with the inner wall of the chamber body 41 along the length direction of the chamber body 41. Two positioning members 53 are provided, which are a cross structure, and are composed of a central round tube and four cylinders arranged along the radial direction of the round tube. The ends of the cylinders are processed with arcs to better slide with the inner wall of the chamber body 41. The use of two positioning members 53 can well ensure the linearity of the movement of the floating rod 52, so as to ensure that the injection port 46 is blocked.

[0068] Figure 4 As shown, a first conical opening 47 is provided at the lower side of the sample inlet 46 in the chamber body 41, and a second conical opening 48 is provided at the upper side of the sample inlet 46; the first conical opening 47 is small at the top and large at the bottom, so as to facilitate the introduction of sand during sampling and sealing after sampling; the second conical opening 48 is large at the top and small at the bottom, so as to facilitate the flow of sand sample when taking out the sand sample, and to facilitate cleaning. Figure 3As shown, a sealing gasket 511 is provided on the conical head 51. When the conical head 51 closes the injection port 46, the sealing gasket 511 is pressed against the transitional connection between the first conical port 47 and the injection port 46. The sealing gasket 511 is annular and embedded in the conical head 51. The sealing gasket 511 can improve the sealing performance between the conical head 51 and the sampling port to prevent the sand sample from flowing out. The conical head 51 is provided with an annular groove for mounting the sealing gasket 511.

[0069] like Fig. 9 As shown, the transitional connection between the conical head 51 and the floating rod 52 is set to be an inclined surface, which is defined as a guide surface 512, which is more conducive to the discharge of sediment.

[0070] Figure 2 and 8 As shown, the bin body 41 includes a main body and an end seat 43. The main body is a cylindrical structure with an outer diameter of 60 mm and a length of 380 mm. The upper end of the main body is processed with an external thread, and the end seat 43 is threadedly connected to the upper part of the main body. A guide sleeve 45 is coaxially arranged in the end seat 43.

[0071] Figure 3 As shown, the elastic member is a spring, which is denoted as a first spring 55, and the first spring 55 is sleeved on the floating rod 52 and the guide sleeve 45. The lower end of the first spring 55 abuts against the upper side of a positioning member 53 located above, and the upper end of the first spring 55 abuts against the end seat 43.

[0072] Figure 2 As shown, four vertical arc-shaped plates 42 are also provided on the outer side of the main body, which can be used as wrenches to screw the main body and also have a certain aesthetic effect.

[0073] Figure 3 , 6 As shown in FIG. 7 , a handle assembly 5 is provided at the upper end of the floating rod 52. The handle assembly 5 includes a pull rod 54 and a stop block 57. One end of the pull rod 54 extends into the bin body 41 and cooperates with the upper end of the floating rod 52. The stop block 57 is located outside the bin body 41. The pull rod 54 passes through the guide sleeve 45 and cooperates with the upper part of the floating rod 52 to prevent it from falling off. The pull rod 54 includes a relatively long small diameter section and a relatively short large diameter section. The large diameter section is located in the guide sleeve 45. A stop portion 541 is provided at the lower end of the pull rod 54, and its outer diameter is slightly larger than the outer diameter of the above-mentioned small diameter section.

[0074] Figure 5As shown, the floating rod 52 is made in two sections, the lower section is a solid rod, and the upper section is composed of steel pipes (for example, 2 to 4 pipes) and an end plate 521. The steel pipe is arranged vertically and the bottom is welded and fixed to the upper end of the solid rod. The upper end of the solid rod is spherically processed to prevent sediment from being retained. The end plate 521 is arranged at the upper end of each steel pipe. The end plate 521 is provided with a through hole for the pull rod 54 to pass through and be loaded into. A hollow structure is formed between several steel pipes, which also defines the activity space of the lower section of the pull rod 54. The aperture of the through hole is smaller than the outer diameter of the limit part 541. The two are limited in one direction, that is, the floating rod 52 can move upward along the direction of the pull rod 54. At this time, the pull rod 54 is basically not subjected to force and does not follow; but conversely, when the pull rod 54 is forced to move upward, the floating rod 52 can be driven to move upward through its limit part 541. The hollow structure design is conducive to sampling and prevents sand samples from being retained in the warehouse body 41.

[0075] Figure 2 As shown, the upper end surface of the end seat 43 of the bin body 41 is provided with a support block 44, and there are two support blocks 44. The above-mentioned limit block 57 can generally be located between the two support blocks 44, and the limit block 57 is a rectangular block. Figure 6 As shown, after the limit block 57 is pulled out a certain distance, it is rotated 90 degrees and can be supported on the support block 44. A pull ring 56 is provided on the limit block 57, which can be inserted by fingers for easy operation.

[0076] Figure 7 As shown, the outer periphery of the large diameter section of the pull rod 54 is also provided with a sealing groove, and two O-rings 58 are sleeved thereon to achieve sealing at the joint with the end seat 43 to prevent mud and sand from entering from the top and mixing with the riverbed sand.

[0077] After the sampling is completed, the sampler 4 is removed. When taking out the sand sample in the chamber 41, the pull ring 56 is pulled by hand, and the pull rod 54 drives the floating rod 52 to rise, so that the conical head 51 is separated from the injection port 46, and the sand sample in the chamber 41 can flow downward from the injection port 46. After being pulled out a certain distance, the limit block 57 is rotated 90 degrees and can be supported on the support block 44. This state can be maintained, and clean water can be added from the injection port 46 to clean the sampling chamber.

[0078] Figures 10 to 12As shown, there are six mounting seats 6, corresponding to the installation of six samplers 4. The mounting seat 6 includes a first mounting groove 64 and a second mounting groove 62. A limiting surface 63 is formed between the first mounting groove 64 and the second mounting groove 62. The first mounting groove 64 is provided with a limiting platform 67 at one end away from the second mounting groove 62. The first mounting groove 64 and the second mounting groove 62 are respectively provided for the corresponding parts of the sampler 4 to be inserted. The limiting surface 63 and the limiting platform 67 respectively limit the sampler 4 in the downward and upward directions. The sampler 4 includes a large diameter section and a small diameter section. The large diameter section and the small diameter section are connected to form a step. The large diameter section is installed in the first mounting groove 64, and the small diameter section is installed in the second mounting groove 62.

[0079] The rear end of the mounting seat 6 is also provided with an auxiliary limiting plate 66, which is approximately a U-shaped plate and has a receiving groove 65, which is connected to the first mounting groove 64, and the receiving groove 65 is connected to the first mounting groove 64. The receiving groove 65 can accommodate the upper end component of the sampler 4 mentioned above.

[0080] The mounting seat 6 is also provided with a connecting piece, which is used to prevent the sampler 4 from slipping out of the mounting seat 6. The connecting piece includes two bolts 61, which are penetrated on the mounting seat 6. The two bolts 61 are respectively penetrated on the side plates of the first mounting groove 64 and the second mounting groove 62. When installing, the sampler 4 is first installed into the first mounting groove 64 and the second mounting groove 62, and then fixed with the bolts 61.

[0081] Figures 13 to 17 As shown, the suspension structure 1 includes a first connecting member 11 and a second connecting member 12, and the first connecting member 11 and the second connecting member 12 are both made of rectangular plates. The first connecting member 11 is provided with a plurality of first connecting holes 112 along its length direction, and the second connecting member 12 is provided with a plurality of second connecting holes 123 along its length direction. The second connecting holes 123 are selectively connected with the first connecting holes 112 to adjust the total length of the first connecting member 11 and the second connecting member 12. The first connecting member 11 is provided with a slot 113 which is open at one end and passes through from top to bottom. The second connecting member 12 is provided with an insert plate 122, which is inserted into the slot 113. The insertion depth of the insert plate 122 is adjustable. After adjustment, it is connected by a plurality of bolts, which are inserted into the corresponding first and second connecting holes.

[0082] Fig.13 As shown, the first connecting member 11 and the second connecting member 12 are respectively provided with a first connecting portion 111 and a second connecting portion 121 for connecting to the hanging point of the lead fish, and the first connecting member 11 is provided with a clamp structure for connecting to the shaft sleeve 2. The first connecting portion 111 and the second connecting portion 121 both include a connecting plate, and the connecting plate is provided with a bolt hole, which is connected to the hanging hole at the hanging point. The total length of the first connecting member 11 and the second connecting member 12 is adjustable, so it can adapt to the spacing of the hanging holes.

[0083] Fig.13 , 16 As shown in Figures 17 and 18, the clamp structure includes a first clamp member 13 and a second clamp member 14. The second clamp member 14 is buckled on the lower side of the sleeve 2. The second clamp member 14 includes a semicircular portion 141. Connecting ears are provided on both sides of the semicircular portion 141. The connecting ears are provided with a plug hole 142. The first clamp member 13 includes a buckling portion 134 and a slot portion. The buckling portion 134 is buckled on the upper side of the sleeve 2 and is arranged opposite to the semicircular portion 141 of the second clamp member 14. The slot portion has a slot 133 with an opening facing upwards. The slot 133 is for the first connector 11 and the second connector 12 to be placed. The buckling portion 134 is provided with a stud 132. The stud 132 is used to be inserted into the plug hole 142 and is fixed in conjunction with a nut.

[0084] like Fig.16 As shown, the slot 133 is a U-shaped slot, and a plurality of third connection holes 131 are respectively provided on the two slot walls of the slot 133. The third connection holes 131 are selectively matched with the first connection holes 112. After the first connection hole 112 is aligned with the corresponding second connection hole 123 and the third connection hole 131, the bolts are passed through and fastened with the locking nuts.

[0085] like Figures 18 to 23 As shown, the anti-rotation switch mechanism 7 includes an anti-rotation structure 71 for fixing on the turntable 3, and a clamping member that selectively stops the rotation with the anti-rotation structure 71, wherein the clamping member has an anti-rotation position that stops the rotation with the anti-rotation structure 71 and a rotatable position that is detached from the anti-rotation structure 71.

[0086] like Fig.18 and Fig. 20 As shown, the anti-rotation structure 71 includes a disk body 711, and the disk body 711 is provided with a plurality of first protrusions 712, and the first protrusions 712 are distributed along the circumference. The disk body 711 is welded and fixed on the rotating disk 3, and the rotating shaft 31 passes through the center hole of the disk body 711, and one end of the rotating shaft 31 is also fixed to the rotating disk 3.

[0087] like Figures 19 to 21 As shown, the clamping member adopts a chuck 72, which is anti-rotationally slidably assembled on the shaft sleeve 2. The chuck 72 is provided with a meshing structure that cooperates with the anti-rotation structure 71 on one side facing the rotating disk 3, and a slope 723 is provided on the other side. The meshing structure includes a plurality of second protrusions 722, each of which is distributed along the circumference at intervals, and the second protrusions 722 are used to prevent rotation and cooperate with the anti-rotation groove 713 formed between two adjacent first protrusions 712. A first pin 721 is provided on the outer peripheral side of the chuck 72.

[0088] like Fig.19 , 21 and Fig.23As shown, a positioning ring 74 is fixed on the sleeve 2, and a power member 75 is provided between the positioning ring 74 and the chuck 72; an elastic member is connected between the positioning ring 74 and the chuck 72, and the elastic member is a spring, which is recorded as the second spring 73. A second pin 741 is provided on the outer peripheral side of the positioning ring 74, and both ends of the spring are hung on the first pin 721 and the second pin 741. The first pin 721 and the second pin 741 are a pair, and the second spring 73 is provided with two corresponding ones.

[0089] like Fig. 22 As shown, the power member 75 includes a rotating ring 752 and a force-bearing portion 751 connected to the rotating ring 752. The force-bearing portion 751 is arranged to extend outwardly along the radial direction of the sleeve 2, and the force-bearing portion 751 is a rod-shaped structure. The rotating ring 752 is sleeved on the sleeve 2, and a driving protrusion 753 is provided on the side of the rotating ring 752 facing the chuck 72. The driving protrusion 753 is used to contact and cooperate with the slope surface 723 of the chuck 72.

[0090] like Fig.21 As shown, there are two slopes 723 and they are symmetrically arranged about the center of the chuck 72, and the slopes 723 are located on the semicircular ring of the chuck 72. The end of the driving protrusion 753 is a round head, which is used to contact the slope 723. The side where the slope 723 of the semicircular ring is located has a high point 7231 and two low points 7232, so that when the force-bearing part 751 rotates or under the action of the elastic member, the chuck 72 is driven to move axially along the sleeve 2. The thickness of the semicircular ring is large at the high point 7231, and the thickness of the semicircular ring is small at the low point 7232, and there is a smooth transition from the high point 7231 to the low point 7232.

[0091] A plurality of anti-rotation blocks (not shown) are provided on the outer periphery of the sleeve 2, and the chuck 72 cooperates with the anti-rotation blocks so that the chuck 72 can only move axially along the sleeve 2. The anti-rotation blocks are arc-shaped blocks, four of which are arranged at intervals, and the arc-shaped blocks face the notches between the adjacent second protrusions 722. The chuck 72 can move axially within a certain range, but cannot rotate relative to the sleeve 2.

[0092] When used underwater, the force-bearing portion 751 is in a vertical downward state or a state close to a vertical downward state, and the force-bearing portion 751 can rotate around the sleeve 2 under the impact of the water flow. When the rotating ring 752 rotates, the driving protrusion 753 will push the chuck 72 to move axially along the sleeve 2 (toward the side of the turntable 3), and then the meshing structure on the chuck 72 cooperates with the anti-rotation structure 71 to prevent rotation, thereby achieving underwater anti-rotation. When one of the samplers 4 completes sampling and the sampling device is lifted out of the water as a whole, the force-bearing portion 751 of the power member 75 is no longer affected by the impact of the water flow, and rotates around the sleeve 2 in the opposite direction by gravity at a certain angle, and the driving protrusion 753 on the power member 75 rotates from the high point 7231 of the chuck 72 to the low point 7232. At the same time, the chuck 72 moves toward the direction of the positioning ring 74 under the pulling force of the second spring 73, and finally disengages from the anti-rotation structure 71.

[0093] like Figures 24 to 30 As shown, the rotary thrust device includes a housing 8, a power mechanism 9 is arranged in the housing 8, one end of the sleeve 2 is fixed to the housing 8, the rotating shaft 31 passes through the sleeve 2, and one end of the rotating shaft 31 located in the housing 8 is in transmission cooperation with the power mechanism 9. The housing 8 includes a cylinder 81 and a detachable cover plate 82, and the cover plate 82 is sealed with the outer end of the cylinder 81 through a sealing gasket 511 to achieve the purpose of waterproofing. The end of the sleeve 2 close to the turntable 3 is in rotational sealing cooperation with the rotating shaft 31.

[0094] like Fig.25 and 26 As shown, the power mechanism 9 includes a clutch mechanism, an electric push rod 91 and a transmission member 92. The clutch mechanism includes a fixed clutch plate 93, a movable clutch plate 94 and a rotating power plate 95 which are arranged in sequence. The movable clutch plate 94 is assembled on the rotating shaft 31 to prevent rotation, and a key connection is preferably used. The fixed clutch plate 93 and one side of the movable clutch plate 94 are in a one-way rotation-proof fit, and the other side of the movable clutch plate 94 and the rotating power plate 95 are in a one-way transmission fit. The rotating power plate 95 is provided with a transmission part, and the telescopic rod of the electric push rod 91 is matched with the transmission part on the rotating power plate 95 through the transmission member 92.

[0095] like Fig. 27 As shown, the center of the fixed clutch plate 93 is provided with a first through hole 932 for the rotation shaft 31 to pass through, and the side of the fixed clutch plate 93 facing the movable clutch plate 94 is provided with four first tooth portions 931, and the first tooth portion 931 has a first limiting tooth surface 9311 and a first sliding matching surface 9312. The first limiting tooth surface 9311 is a vertical surface perpendicular to the base of the fixed clutch plate 93, and the first sliding matching surface 9312 is a slope surface. The other side of the fixed clutch plate 93 is welded and fixed to the bottom of the cylinder 81 of the housing 8.

[0096] like Fig.28As shown, the center of the movable clutch plate 94 is provided with a second through hole 942, and the rotating shaft 31 passes through the second through hole 942 and cooperates with the rotating shaft 31 to stop rotation. A plurality of second tooth portions 941 are provided on both sides of the movable clutch plate 94, and each second tooth portion 941 is distributed along the circumference with the rotating shaft 31 as the center, and the second tooth portion 941 has a second limiting tooth surface 9411 and a second sliding matching surface 9412. The structure of the second tooth portion 941 is the same as that of the first tooth portion 931, except that although the second sliding matching surface 9412 is also a slope surface, the inclination direction is opposite to that of the first sliding matching surface 9312, thereby achieving one-way rotation stop for both.

[0097] like Fig.29 As shown, a third through hole 953 is provided at the center of the rotating power sheet 95 for the rotating shaft 31 to pass through. The rotating power sheet 95 and the rotating shaft 31 are rotatably assembled. A plurality of third tooth portions 952 are provided on the side of the rotating power sheet 95 facing the movable clutch sheet 94. Each third tooth portion 952 is distributed along the circumference with the rotating shaft 31 as the center, and the third tooth portion 952 has a third limiting tooth surface 9521 and a third sliding matching surface 9522. The structure of the third tooth portion 952 is the same as that of the second tooth portion 941, which is also a vertical surface and a slope surface. When the rotating power sheet 95 rotates counterclockwise, the third limiting tooth surface 9521 cooperates with the second limiting tooth surface 9411 to drive the movable clutch sheet 94 to rotate synchronously.

[0098] like Fig.25 As shown, a stopper is provided at one end of the rotating shaft 31, and a third spring 96 is provided between the stopper and the rotating power sheet 95, and the third spring 96 is sleeved on the rotating shaft 31. The stopper is a baffle 97 and a limit bolt 98, and the limit bolt 98 passes through the baffle 97 and is threadedly connected to one end of the rotating shaft 31. One end of the third spring 96 abuts against the baffle 97, and the other end abuts against the rotating power sheet 95, and the third spring 96 is used to provide an axial thrust of appropriate size to the rotating power sheet 95.

[0099] like Fig.30 As shown, the transmission part is a transmission rod 951, one end of the transmission member 92 is connected to the telescopic rod of the electric push rod 91, and the other end is provided with a bayonet 922, which is movably clamped on the transmission rod 951. The telescopic action of the electric push rod 91 can drive the transmission rod 951 to rotate.

[0100] The bayonet 922 is formed by two spaced apart protrusions 921 , and the protrusions 921 are perpendicular to the movement direction of the transmission member 92 .

[0101] like Fig.25 As shown, in order to make the transmission member 92 perform linear motion more stably, a guide rail 83 is also provided. The guide rail 83 is composed of two parallel U-shaped rods. The protruding column 921 is limited in the long groove between the two U-shaped rods and can only slide in a straight line.

[0102] Working principle of rotary thrust device:

[0103] The telescopic rod of the electric push rod 91 extends, and the transmission rod 951 is driven to rotate through the transmission member 92, and the rotating power plate 95 rotates counterclockwise synchronously, and the third limit tooth surface 9521 cooperates with the second limit tooth surface 9411 on one side of the movable clutch plate 94 to drive the movable clutch plate 94 to rotate synchronously. At this time, the fixed clutch plate 93 and the other side of the movable clutch plate 94 are in contact through the sliding matching surface of the two, and the fixed clutch plate 93 will not prevent the rotation of the movable clutch plate 94. The movable clutch plate 94 can drive the rotating shaft 31 to rotate synchronously, drive the turntable 3 to rotate a certain angle, and finally realize the switching of the sampler 4. When the telescopic rod of the electric push rod 91 is retracted, the transmission member 92 drives the transmission rod 951 to rotate in the opposite direction, and the rotating power sheet 95 rotates clockwise synchronously. The rotating power sheet 95 contacts one side of the movable clutch sheet 94 through the sliding matching surface of the two. The rotating power sheet 95 cannot drive the movable clutch sheet 94 to rotate (this has a certain relationship with the magnitude of the force of the third spring 96). The first tooth portion 931 on the fixed clutch sheet 93 will also work, and the movable clutch sheet 94 is not allowed to rotate clockwise. Because the movable clutch has a clockwise rotation trend, the first limit tooth surface 9311 on the fixed clutch sheet 93 will be limited and matched with the second limit tooth surface 9411 on one side of the movable clutch sheet 94. By using the one-time extension and contraction of the electric push rod 91, the turntable 3 can be rotated 60 degrees, and another sampler 4 can be switched to the working position. During the switching process, the clutch mechanism plays a role in power transmission; when the switching is completed, the position of the sampler 4 can be maintained by the clutch mechanism to ensure the smooth progress of the sampling work.

[0104] The signal acquisition and control part of the multi-position riverbed quality assurance sampling system is briefly introduced as follows:

[0105] The electric push rod 91 is powered by a battery located in the housing 8. The electric push rod 91 is electrically connected to the circuit board to control the telescopic action of the electric push rod. The circuit board is also provided with a communication module to communicate with the control part on the shore, receive instructions from the shore and send collected information to the shore. The communication module is installed in a dedicated installation bin, and the wireless signal can penetrate the installation bin. The installation bin (not shown) is threadedly connected to the outside of the housing 8, and a sealing ring is provided to ensure sealing.

[0106] Fig.31As shown, inside the housing 8, on the periphery of the fixed clutch plate 93, six reed switches 99 are evenly distributed along the circumferential direction. The reed switches 99 are connected to the above-mentioned circuit board, and each reed switch 99 is numbered. One reed switch corresponds to one sampler 4 (the samplers are also numbered), which is used to determine whether the sampler is in the working position and which sampler is in the working position. In the clockwise direction, the samplers are numbered "1", "2", "3", "4", "5", and "6" in sequence. In the counterclockwise direction, the reed switches are numbered "1", "2", "3", "4", "5", and "6" in sequence.

[0107] A magnet 943 is embedded on the outer edge of the movable clutch plate 94. Every time the movable clutch plate 94 rotates 60 degrees, the magnet 943 can trigger one of the reed switches 99. When the reed switch 99 is turned on, information can be sent to the shore to clearly know the location of the sampler.

Claims

1. Multi-position riverbed quality assurance sampling system, characterized by: It includes a turntable, a shaft sleeve, a rotary thrust device, an anti-rotation switch mechanism and a suspension structure. The turntable is provided with a plurality of mounting seats at intervals along its circumferential direction, and one mounting seat is used to clamp one sampler. A rotating shaft is vertically provided at the center of the turntable. The sampler comprises a chamber for containing the collected riverbed material, a sample inlet is arranged at the lower end of the chamber, a floating rod is arranged in the chamber, the lower end of the floating rod is a conical head, the floating rod cooperates with the elastic member, the conical head can open the sample inlet after being subjected to an upward force, and can automatically reset to close the sample inlet after the force is released; The rotary thrust device comprises a housing, a power mechanism is arranged in the housing, one end of a shaft sleeve is fixed to the housing, the shaft passes through the shaft sleeve, and one end of the shaft located in the housing is in transmission cooperation with the power mechanism; The anti-rotation switch mechanism comprises an anti-rotation structure for fixing on the rotating disk, a clamping piece selectively matched with the anti-rotation structure for preventing rotation, and the clamping piece has an anti-rotation position matched with the anti-rotation structure for preventing rotation and a rotatable position separated from the anti-rotation structure; The suspension structure includes a first connecting member and a second connecting member. The first connecting member is provided with a plurality of first connecting holes along its length direction, and the second connecting member is provided with a plurality of second connecting holes along its length direction. The second connecting holes are selectively connected to the first connecting holes to adjust the total length of the first connecting member and the second connecting member. The first connecting member and the second connecting member are respectively provided with a first connecting part and a second connecting part for connecting to the hanging point of the lead fish. The first connecting member is provided with a clamp structure for connecting to the shaft sleeve.

2. The multi-position riverbed quality assurance sampling system according to claim 1 is characterized by: A handle assembly is provided at the upper end of the floating rod, and the handle assembly includes a pull rod and a limit block. One end of the pull rod extends into the warehouse body and cooperates with the upper end of the floating rod, and the limit block is located outside the warehouse body; a support block is provided on the upper end surface of the warehouse body, and the limit block can be supported on the support block after being pulled out a certain distance, and a pull ring is provided on the limit block.

3. The multi-position riverbed quality assurance sampling system according to claim 1 is characterized by: A first conical opening is provided in the chamber body at the lower side of the injection port, and a second conical opening is provided at the upper side of the injection port; the first conical opening is small at the top and large at the bottom, and the second conical opening is large at the top and small at the bottom; a sealing gasket is provided on the conical head, and when the conical head closes the injection port, the sealing gasket is pressed against the transition connection between the first conical opening and the injection port.

4. The multi-position riverbed quality assurance sampling system according to claim 1 is characterized by: The power mechanism includes a clutch mechanism, an electric push rod and a transmission member. The clutch mechanism includes a fixed clutch plate, a movable clutch plate and a rotating power plate arranged in sequence. The movable clutch plate is a rotation-stopping assembly on a rotating shaft. The fixed clutch plate and one side of the movable clutch plate are in a one-way rotation-stopping fit, and the other side of the movable clutch plate and the rotating power plate are in a one-way transmission fit. A transmission part is provided on the rotating power plate, and the telescopic rod of the electric push rod cooperates with the transmission part on the rotating power plate through the transmission member.

5. The multi-position riverbed quality assurance sampling system according to claim 4 is characterized by: The fixed clutch plate is provided with a first through hole in the center for the rotating shaft to pass through, and at least one first tooth portion is provided on the side of the fixed clutch plate facing the movable clutch plate, and the first tooth portion has a first limiting tooth surface and a first sliding matching surface; the movable clutch plate is provided with a second through hole in the center, and the rotating shaft passes through the second through hole and cooperates with it to stop rotation, and a plurality of second tooth portions are provided on both sides of the movable clutch plate, and each second tooth portion is distributed along the circumference with the rotating shaft as the center, and the second tooth portion has a second limiting tooth surface and a second sliding matching surface; the rotating power plate is provided with a second through hole in the center Three through holes, the rotating shaft passes through the third through hole, the rotating power plate and the rotating shaft are rotatably assembled, and a plurality of third tooth portions are provided on the side of the rotating power plate facing the movable clutch plate, and each third tooth portion is distributed along the circumference with the rotating shaft as the center, and the third tooth portion has a third limiting tooth surface and a third sliding matching surface; when the rotating power plate rotates counterclockwise, the third limiting tooth surface cooperates with the second limiting tooth surface to drive the movable clutch plate to rotate synchronously; a stopper is provided at one end of the rotating shaft, and a spring is provided between the stopper and the rotating power plate, and the spring sleeve is arranged on the rotating shaft.

6. The multi-position riverbed quality assurance sampling system according to claim 4 or 5, characterized in that: The transmission part is a transmission rod, one end of the transmission member is connected to the telescopic rod of the electric push rod, and the other end is provided with a bayonet, which is movably clamped on the transmission rod. The telescopic action of the electric push rod can drive the transmission rod to rotate.

7. The multi-position riverbed quality assurance sampling system according to claim 1 is characterized by: The clamping part adopts a chuck, which is slidably assembled on the shaft sleeve, and a positioning ring is fixed on the shaft sleeve, and a power piece is arranged between the positioning ring and the chuck; the chuck is provided with a meshing structure cooperating with the anti-rotation structure on the side facing the rotating disk, and a slope is provided on the other side, and an elastic piece is connected between the positioning ring and the chuck; the power piece includes a rotating ring and a force-bearing part connected to the rotating ring, the force-bearing part is extended outward along the radial direction of the shaft sleeve, the rotating ring is sleeved on the shaft sleeve, and a driving protrusion is provided on the side of the rotating ring facing the chuck, and the driving protrusion is used to contact and cooperate with the slope; when the force-bearing part is rotated around the shaft sleeve under the action of external force, the chuck moves axially along the shaft sleeve, and the meshing structure on the chuck cooperates with the anti-rotation structure to stop rotation; when the force-bearing part is not affected by external force, the chuck disengages from the anti-rotation structure under the action of the elastic piece.

8. The multi-position riverbed quality assurance sampling system according to claim 7 is characterized by: The anti-rotation structure includes a disk body, which is provided with a plurality of first protrusions, and the first protrusions are distributed at intervals along the circumference; the engaging structure includes a plurality of second protrusions, and the second protrusions are distributed at intervals along the circumference, and the second protrusions are used to cooperate with the anti-rotation grooves formed between two adjacent first protrusions.

9. The multi-position riverbed quality assurance sampling system according to claim 7 is characterized by: There are two slope surfaces which are symmetrically arranged about the center of the chuck, and the slope surfaces are located on the semicircular ring of the chuck; the end of the driving protrusion is a round head for contacting the slope surface; the side where the slope surface of the semicircular ring is located has a high point and two low points, so that when the force-bearing part rotates or under the action of the elastic member, the chuck is driven to move axially along the sleeve.

10. The multi-position riverbed quality assurance sampling system according to claim 1 is characterized in that: The mounting seat includes a first mounting groove and a second mounting groove, a limiting surface is formed between the first mounting groove and the second mounting groove, and the first mounting groove is provided with a limiting platform at an end away from the second mounting groove. The first mounting groove and the second mounting groove are respectively provided for corresponding parts of the sampler to be inserted, and the limiting surface and the limiting platform respectively limit the sampler in the upward and downward directions; a connecting piece is also provided on the mounting seat to prevent the sampler from escaping from the mounting seat.

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