Engineering surveying and mapping sample collecting and sampling equipment and method

Abstract

The invention discloses engineering surveying and mapping sample collecting and sampling equipment and method. The equipment comprises a first closed frame, a second closed frame, a first arc-shaped piece and a second arc-shaped piece, and the first arc-shaped piece is provided with a closed circular ring; the telescopic device drives the two closed frames to be close to each other, so that the arc-shaped sheets are closed to form a barrel-shaped structure and the edges are closed; the cover plate driven by the transmission mechanism and the overturning piece is arranged, so that vertical resistance reduction can be kept when the equipment is put down, and the equipment is overturned to be horizontal during sampling; the transmission mechanism drives the pressing plate to press downwards and enables the cover plate to rotate and to be in threaded connection with the closed circular ring, meanwhile, the clamping ring at the end of the cover plate and the clamping grooves in the arc-shaped pieces are tightly sealed in a wedged mode, and therefore the clamping ring and the two arc-shaped pieces jointly form an independent closed cavity, and sample collection is completed. The problems of large sample disturbance, easy fractionation, gas dissipation, pipeline blockage and the like in the prior art are effectively solved, and high-fidelity, undisturbed and undisturbed collection of a water body or bottom mud sample is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sample collection, more particularly, it relates to an engineering survey sample collection sampling device and method. BACKGROUND

[0002] In the fields of engineering survey, environmental monitoring and hydrogeology, it is often necessary to collect water or bottom mud samples from a specific depth of water for analysis. Currently, the commonly used sampling equipment is based on the principle of negative pressure suction, which uses a vacuum pump to generate negative pressure to suck the sample into a container.

[0003] However, such methods have obvious drawbacks. First, the suction action will disturb the sample violently, destroying the original stratification structure of the bottom mud. Second, the negative pressure suction is prone to be blocked by algae, fibers or debris, especially in complex water environments, which greatly reduces the reliability of the equipment. Finally, the existing equipment has a complex structure, is inconvenient to clean and maintain, and greatly disturbs the original state of the water body during operation. Therefore, there is an urgent need for a undisturbed sampling device and method that can achieve low disturbance, high fidelity and high reliability sampling to overcome the inherent defects of negative pressure suction technology.

[0004] Therefore, in order to solve the above technical problems, the present application provides an engineering survey sample collection sampling device and method. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application aims to provide an engineering survey sample collection sampling device and method.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an engineering survey sample collection sampling device, comprising:

[0007] A closed frame one and a closed frame two, and an arc-shaped sheet one and an arc-shaped sheet two arranged on the closed frame one and the closed frame two respectively, and a closed ring arranged on the arc-shaped sheet one, the closed frame one is installed with a telescopic device through a side frame, the arc-shaped sheet one is brought together with the arc-shaped sheet two through the telescopic device to form a hollow cylindrical structure, and the edge of the cylindrical structure is closed through the closed frame and the closed frame two;

[0008] A cover plate arranged on the closed mechanism, and the closed mechanism is connected with a transmission mechanism through a turnover piece, the transmission mechanism is arranged on the closed frame two, and when the closed frame two moves close to the closed frame one, the turnover piece drives the closed mechanism and the cover plate to turn over close to the closed ring through the transmission mechanism;

[0009] The pressing plate is arranged on the transmission mechanism, and after the cover plate is turned to be parallel to the closing ring, the pressing plate is pressed on the closing mechanism by the transmission mechanism to make the screw thread of the cover plate abut against the screw thread of the closing ring, and the cover plate is rotated and connected with the closing ring by the transmission mechanism.

[0010] Preferably, the turning part is a rotating seat rotatably arranged on the side frame, and a gear one is arranged at the end of the rotating seat, and the closing mechanism is arranged on the rotating seat.

[0011] The transmission mechanism comprises a sliding seat slidably arranged on the side frame and connected with the closing frame two, and a tooth one is arranged on the sliding seat and engaged with the gear one.

[0012] Preferably, the transmission mechanism further comprises a hollow tube rotatably arranged on the side frame and a driving rod arranged on the sliding seat, the driving rod is inserted into the hollow tube, a guide groove is arranged on the inner wall of the hollow tube, a protruding part on the driving rod is slidably embedded in the guide groove, and the pressing plate is arranged on the outer surface of the hollow tube, when the cover plate is turned to be parallel to the closing ring, the protruding part of the driving rod rotates the hollow tube and the pressing plate through the guide groove.

[0013] Preferably, the closing mechanism comprises a rotating ring connected with the rotating seat, a limiting groove is arranged on the rotating ring, a driving ring is arranged on the cover plate through the damping telescopic column, a limiting block slidably embedded in the limiting groove is arranged on the driving ring, and an annular groove integrally formed with the limiting groove is arranged on the rotating ring, a driving plate is further arranged on the driving ring, and the driving plate abuts against the recessed position surface of the cover plate.

[0014] Preferably, a limiting ring is arranged in the annular groove through a spring, and the sum of the thicknesses of the limiting ring and the limiting block is smaller than the width dimension of the annular groove.

[0015] Preferably, a gear two is arranged on the outer surface of the driving ring, and the transmission mechanism further comprises a tooth two arranged on the sliding seat, and after the hollow tube is rotated and the pressing plate is pressed on the driving ring, the tooth two is engaged with the gear two.

[0016] Preferably, a clamping ring is arranged on the end of the cover plate close to the opening, a clamping groove is arranged on the arc-shaped piece one and the arc-shaped piece two, the clamping ring and the clamping groove are both wedge-shaped structures, and the angle of the wedge-shaped inclined surface of the clamping block is greater than the angle of the wedge-shaped inclined surface of the clamping groove.

[0017] Preferably, after the limiting ring is arranged through the rotating ring, a clamping plate is arranged, a gap is formed between the clamping plate and the protruding position of the outer edge of the rotating ring, a film is wrapped on the side of the cover plate close to the opening, the film is used to reduce the surface area of the cover plate, and the end of the film is inserted into the gap.

[0018] Preferably, the material of the film is polytetrafluoroethylene or perfluoroether rubber.

[0019] Preferably, an engineering survey sample collection sampling method is applied to the engineering survey sample collection sampling device, and the engineering survey sample collection sampling method comprises the following steps:

[0020] Step one: connect the wire rope of the winding device with the side frame, and then put the whole sampling device into the water area where sample collection is needed through the wire rope;

[0021] Step two: after the sampling device is lowered to the position where sample collection is needed, start the telescopic device to move the second closing frame close to the first closing frame, so that the second arc-shaped sheet is folded with the first arc-shaped sheet to form a cylindrical structure, and the first gear is engaged with the first tooth to turn the cover plate to be parallel to the closed ring;

[0022] Step three: the protrusion of the driving rod rotates the hollow tube through the guide groove, so that the pressing plate presses the driving ring, and the limiting block presses the limiting ring downward until the limiting block moves into the annular groove, at which time the threads of the cover plate are matched with the threads of the sealing ring;

[0023] Step four: the second gear is engaged with the second tooth, the driving ring drives the cover plate to rotate, and the cover plate is threadedly connected with the sealing ring through the matching thread structure of the cover plate and the sealing ring, and the clamping ring is inserted into the clamping groove, and the clamping ring is deformed to fill the clamping groove to form a closed space between the first arc-shaped plate, the second arc-shaped plate and the cover plate, so as to realize low disturbance collection of the sample.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] 1. The mechanical folding arc-shaped sheet and the threaded sealing cover plate of the present application form a closed chamber at the target depth to directly capture the sample, completely avoiding the disturbance of negative pressure suction to the sample structure, maintaining the original physical structure of the sample, and reducing the problem of disturbance of water body affecting the collection accuracy.

[0026] 2. The closed chamber formed at the target depth directly captures the sample, which fundamentally eliminates the problem of pipeline blockage caused by algae, fibers or debris, and significantly improves the adaptability and reliability of the device in underwater environment (especially eutrophic water area, environment rich in root system or debris).

[0027] 3. During the lowering process of the device, the cover plate remains vertical to reduce resistance; during sampling, the multi-stage transmission mechanism ensures the accurate horizontal turning, pressing and thread docking of the cover plate, and the wedge-shaped clamping ring-clamping groove sealing and film filling sealing are combined to form multiple sealing safeguards, which greatly improve the sealing performance and sampling accuracy of the chamber.

[0028] 4. The whole sampling process only needs one telescopic device to drive, and the degree of automation is high. The split design makes the equipment easy to open and clean thoroughly after sampling, effectively prevents cross contamination, and is convenient to maintain, ensuring the consistency of multiple sampling. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

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

[0031] Figure 2 It is a schematic diagram of the local structure of the application;

[0032] Figure 3 It is a schematic diagram of the top frame section view and local enlarged structure of the application;

[0033] Figure 4 It is a schematic diagram of the overall structure of the application from another angle and local enlargement;

[0034] Figure 5 It is a schematic diagram of the closing mechanism structure of the application;

[0035] Figure 6 It is a schematic diagram of the rotating ring structure of the application;

[0036] Figure 7 It is a schematic diagram of the hollow tube and drive rod structure of the application;

[0037] Figure 8 It is a schematic diagram of the wire frame of the hollow tube of the application;

[0038] Figure 9 It is a schematic diagram of the partition plate structure of the application.

[0039] 1. Closed frame one; 2. Arc sheet one; 3. Closed ring; 4. Pressing plate; 5. Cover plate; 6. Rotating ring; 7. Drive ring; 8. Side frame; 9. Telescopic device; 10. Arc sheet two; 11. Closed frame two; 12. Clamping groove; 13. Drive rod; 14. Hollow tube; 15. Slide; 16. Gear one; 17. Tooth one; 18. Rotating seat; 19. Clamping ring; 20. Damping telescopic column; 21. Tooth two; 22. Limiting block; 23. Gear two; 24. Drive plate; 25. Limiting groove; 26. Limiting ring; 27. Spring; 28. Clamping plate; 29. Guide groove; 30. Partition plate. DETAILED DESCRIPTION

[0040] As Figures 1-8As shown, the present application provides an engineering survey sample collection sampling device comprising:

[0041] The closure frame one 1 and the closure frame two 11, and the arc-shaped sheet one 2 and the arc-shaped sheet two 10 arranged on the closure frame one 1 and the closure frame two 11 respectively, and the arc-shaped sheet one 2 is provided with a closed ring 3, the closure frame one 1 is installed with a telescopic device 9 through a side frame 8, and the telescopic end of the telescopic device 9 is connected with the arc-shaped sheet two 10, the arc-shaped sheet one 2 is made close to the arc-shaped sheet two 10 through the telescopic device 9, so that the arc-shaped sheet one 2 and the arc-shaped sheet two 10 form a hollow cylindrical structure, and the edges of the closure frame one 1 and the closure frame two 11 are closed through the closure frame and the closure frame two 11, the edges of the closure frame one 1 and the closure frame two 11 are respectively provided with a groove and a protrusion matched with each other, after the closure frame one 1 and the closure frame two 11 are closed, the protrusion is inserted into the groove, and the protrusion is made of a material with deformation ability such as rubber, and after being inserted into the groove, it can be deformed to fill the groove, at this time, under the continuous pressure of the telescopic device 9, the edges of the closure frame one 1 and the closure frame two 11 are closed through the protrusion and the groove, the telescopic device 9 here can be a hydraulic telescopic device 9 or an electric telescopic device 9, which is a prior art, and can be selected according to the actual use scene, which will not be described here in detail;

[0042] At this time, in order to smoothly collect the sample, the engineering survey sample collection sampling device further comprises a cover plate 5 arranged on the closure mechanism, and the closure mechanism is connected with the transmission mechanism through a turnover piece, the transmission mechanism is arranged on the closure frame two 11, when the closure frame two 11 moves close to the closure frame one 1, the turnover piece drives the closure mechanism and the cover plate 5 to turn over close to the closed ring 3 through the transmission mechanism, that is, only when the sampling device as a whole is lowered to the position where the sample needs to be collected, the cover plate 5 will change from the vertical state to the parallel state with the closed ring 3, so as to reduce the overall resistance when the sampling device is lowered, and to reduce the contact area with the water body when the sampling device is lowered in the water, thereby reducing the disturbance to the water body, so as to improve the accuracy of subsequent sample collection;

[0043] The pressing plate 4 is arranged on the transmission mechanism, and after the cover plate 5 is turned to be parallel to the closing ring 3, the pressing plate 4 is driven by the transmission mechanism to realize the pressing action on the closing mechanism, so that the cover plate 5 is screwed to be in abutment with the closing ring 3, and the gap between the closing frame one 1 and the closing frame two 11 after being folded is also closed by the mutual extrusion between the snap ring 19 and the clamping groove 12. At this time, an independent chamber is formed between the cover plate 5, the arc-shaped plate one and the arc-shaped plate two, which is isolated from the outside. At this time, the collection of the sample is completed through the cooperation of the cover plate 5, the arc-shaped plate one and the arc-shaped plate two, a cavity is formed at the target depth, so that the undisturbed capture of the sample is realized, and the original physical structure, chemical composition and biological community are maintained. At the same time, since the negative pressure suction mode is fundamentally abandoned, not only the risk of sample fractionation and gas escape caused by suction is eliminated, but also the problem that the suction tube is easily blocked by algae, fibers or debris in the traditional method is solved, so that the reliability and adaptability of the equipment in the underwater environment are greatly improved. The whole sampling device can complete the whole closing process by relying on a telescopic device 9, the overall structure is relatively simple, and the arc-shaped piece one 2 and the arc-shaped piece two 10 can be separated after the collection is completed, so that the inside is convenient to clean. After being separated, the cleaning is very convenient, the cleaning efficiency and cleaning effect are better than those of the traditional negative pressure suction collection device, the next sample collection is not affected, and the use effect is better.

[0044] In an embodiment of the application, the turnover part is a rotating seat 18 rotatably arranged on the side frame 8, and a gear one 16 is arranged at the end of the rotating seat 18. The closing mechanism is arranged on the rotating seat 18, and the transmission mechanism comprises a sliding seat 15 slidably arranged on the side frame 8 and connected with the closing frame two 11. The sliding seat 15 is provided with a tooth one 17, and the tooth one 17 is engaged with the gear one 16. When the closing frame one 1 and the closing frame two 11 are in the initial position, that is, not in the collection state, the tooth one 17 is in the engaged state with the gear one 16, so that the cover plate 5 does not shake when descending in the water body through the self-locking of the tooth one 17 and the gear one 16, the disturbance to the water body is reduced, and the original ecology of the sample is maintained. When the closing frame one 1 is moved to be close to the closing frame two 11 through the telescopic device 9, the tooth one 17 drives the gear to rotate, so that the gear one 16 and the rotating seat 18 rotate, and the cover plate 5 rotates.

[0045] In still another embodiment of the present application, the transmission mechanism further comprises a hollow tube 14 rotatably mounted on the side frame 8 and a driving rod 13 arranged on the sliding base 15, the driving rod 13 is inserted into the hollow tube 14, and a guide groove 29 is arranged on the inner wall of the hollow tube 14, a protruding portion on the driving rod 13 is slidingly fitted in the guide groove 29, and the pressing plate 4 is arranged on the outer surface of the hollow tube 14, when the cover plate 5 is flipped to be parallel to the closed ring 3, the protruding portion of the driving rod 13 rotates the hollow tube 14 and the pressing plate 4 through the guide groove 29;

[0046] Here, the guide groove 29 is configured as two straight grooves connected by a spiral groove, when the telescopic device 9 pushes the closed frame two 11 to move close to the closed frame one 1, the protruding portion of the driving rod 13 moves in the position of one straight groove, when the closed frame two 11 is moved to flip the cover plate 5 to be parallel to the closed ring 3, the protruding portion of the driving rod 13 is slidingly fitted into the spiral groove, at this time, the hollow tube 14 starts to rotate, so that the pressing plate 4 starts to rotate;

[0047] In still another embodiment of the present application, the closing mechanism comprises a rotating ring 6 connected with the rotating seat 18, a limiting groove 25 is arranged on the rotating ring 6, the cover plate 5 is installed with a driving ring 7 through the damping telescopic column 20, a limiting block 22 is arranged on the driving ring 7 and slidingly fitted in the limiting groove 25, an annular groove is further arranged on the rotating ring 6 and integrally formed with the limiting groove 25, a driving plate 24 is further arranged on the driving ring 7 and abuts against the recessed position surface of the cover plate 5, when the pressing plate 4 rotates, the end portion thereof contacts the top surface of the driving ring 7 and presses downwardly the driving ring 7, the driving ring 7 and the limiting block 22 slide downwardly in the limiting groove 25, until the limiting block 22 slides into the annular groove, the outer surface of the driving ring 7 is provided with a gear two 23, the transmission mechanism further comprises a tooth two 21 arranged on the sliding base 15, after the hollow tube 14 rotates and the pressing plate 4 realizes the pressing action on the driving ring 7, the tooth two 21 engages with the gear two 23, so that the driving ring 7 is rotated through the rotation of the gear two 23, the driving ring 7 pushes the recessed position of the cover plate 5 through the driving plate 24, so that the cover plate 5 is rotated, and because the cover plate 5 and the driving ring 7 are pressed to move downwardly at this time, the threads on the cover plate 5 are in the aligned state with the threads on the closed ring 3, at this time, the cover plate 5 is rotated and screwed into the closed ring 3 through the mutually adapted threads, so as to close the opening of the cylindrical structure formed by the arc-shaped sheet one 2 and the arc-shaped sheet two 10, so that the space formed between the cover plate 5, the arc-shaped sheet one 2 and the arc-shaped sheet two 10 is isolated from the outside, and the collection of the sample is realized;

[0048] It should be noted that the recessed position surface of the cover plate 5 and the driving plate 24 need to be coated with lubricating grease, and the initial position of the damping telescopic column 20 is the un-extended state, so that when the pressing plate 4 presses the driving ring 7 downward, the cover plate 5 is pushed downward together, and only when the driving ring 7 rotates, the damping telescopic column 20 is elongated due to the threaded structure of the cover plate 5 and the closed circular ring 3, and the cover plate 5 is screwed to the closed circular ring 3;

[0049] And in order to prevent the driving ring 7 and the cover plate 5 from being impacted by the water flow when the whole sample collection sampling device is lowered in the water body, causing the limiting block 22 to shake in the limiting groove 25, the limiting ring 26 is arranged in the annular groove through the spring 27, the thickness of the limiting ring 26 is less than the width dimension of the annular groove, so that when the pressing plate 4 does not press the driving ring 7 downward, the spring 27 is in the initial state, and the limiting block 22 is limited in the limiting groove 25 through the limiting ring 26, so as to prevent shaking and further disturb the water body to affect the sampling accuracy;

[0050] It should be noted here that the limiting ring 26 is provided with a clamping plate 28 after penetrating the rotating ring 6, and a gap is formed between the clamping plate 28 and the protruding position of the outer edge of the rotating ring 6, the side of the cover plate 5 close to the opening is covered with a film, the film is used to reduce the surface area of the cover plate 5, and the end of the film is inserted into the gap, the material of the film is polytetrafluoroethylene or perfluoroether rubber, when the collection sampling device is lowered in the water body, the surface area of the cover plate 5 is reduced through the covered film, the recessed position of the cover plate 5 is covered, thereby further reducing the downward resistance of the vertically arranged cover plate 5, thereby further reducing the disturbance to the water body, the invention reduces the disturbance to the water body when the sampling device is lowered in the water body through multiple aspects, maintains the original ecology, compared with the negative pressure suction collection method, greatly improves the sample collection accuracy and the effect of maintaining the original ecology, and has excellent applicability;

[0051] It should be noted that when the pressing plate 4 presses the driving ring 7, the threads of the cover plate 5 are aligned with the threads of the closed circular ring 3, since the pressing plate 4 is symmetrically arranged, and the rotation degree of the hollow tube 14 through the guide groove 29 is the same, so that the downward degree of the driving ring 7 and the cover plate 5 at multiple positions is the same, thereby keeping the cover plate 5 horizontal, preventing external factors from affecting the cover plate 5 and causing the cover plate 5 to be skewed and unable to be threaded, in the initial stage of thread engagement, the parallel relationship between the cover plate 5 and the pipe opening is forced to be maintained, preventing skewing due to various disturbances, thereby causing the thread to be "stuck" or "misaligned";

[0052] It should be noted here that the pressing plate 4 is made of a material with elasticity, and when the pressing plate 4 is pressed downward to drive the ring 7 and the cover plate 5, the pressing plate 4 will be deformed, so that when the cover plate 5 is rotated and initially connected with the closed ring 3, the pressing plate 4 can provide a continuous downward force to ensure that the cover plate 5 and the closed ring 3 can be smoothly threaded, preventing slipping between the threads, until the pressing plate 4 recovers from the deformation, at which time even if no downward pressure is provided, the characteristics of the threaded structure will cause the cover plate 5 to be continuously tightened onto the closed ring 3 until the upper surface of the closed ring 3 is flush with the inner upper surface of the cover plate 5, at which time the opening of the closed ring 3 (i.e. the opening of the cylindrical structure) is closed by the cover plate 5;

[0053] It should also be noted that the role of the film here is not only to reduce the contact area with the water body when the cover plate 5 is lowered, but also when the cover plate 5 is rotated to a horizontal state and the pressing plate 4 begins to press the drive ring 7 downward, the limit ring 26 moves downward, the gap between the clamping plate 28 and the protrusion on the rotating ring 6 becomes larger, releasing the film, and then the pressing plate 4 is still continuously pressing the drive ring 7 and the cover plate 5 downward, at which time the film is pressed into the gap between the cover plate 5 and the closed ring 3 after being pressed, and this layer of film is squeezed during the threading process, filling the microscopic and unavoidable processing gaps between the thread tops and thread bottoms, and this layer of film has the same effect as a raw material belt, and even better, because it is formed in situ during the sealing process and does not require manual winding, and it is also very easy to replace the film later, just need to insert the end of the film into the gap, that is, the film used here not only reduces the resistance when the sampling device is lowered, but also acts as a raw material belt during sample collection, further improving the overall sealing performance and preventing sample leakage, and the downward pressure of the pressing plate 4 is obviously not only to force the cover plate 5 and the closed ring 3 to thread, but also to prevent the cover plate 5 and the closed ring 3 from not being able to effectively contact due to the presence of the film, and the downward pressure applied by the pressing plate 4 can cause the film to be pressed into the gap between the threads, improving the sealing effect;

[0054] After the cover plate 5 is threaded with the closed ring 3, the end of the cover plate 5 near the opening is provided with a clasp 19, and the arc-shaped piece one 2 and the arc-shaped piece two 10 are provided with a clamping groove 12, the clasp 19 and the clamping groove 12 are both wedge-shaped structures, and the angle of the wedge-shaped slope of the clamping block is greater than the angle of the wedge-shaped slope of the clamping groove 12, at which time the clamping block fills the clamping groove 12, the clasp 19 is extruded and deformed, further improving the sealing effect and preventing sample leakage;

[0055] In an embodiment of the present application, the sampling device is designed in a split type, which can keep the original state of the sample, reduce the disturbance during sample collection, and the split type design can also provide a partition plate 30 on the arc-shaped sheet two 10. After the arc-shaped sheet one 2 and the arc-shaped sheet two 10 are folded, the internal space is also divided into multiple layers. After the sample is collected, the sample is also divided into multiple layers and separated from each other, so as to prevent the problem of disturbing the internal sample and destroying the interlayer relationship when the sample is taken out from the water body upward after the collection is completed. The partition plate 30 is made of elastic material such as rubber, which can effectively form a closed structure after the arc-shaped sheet one 2 and the arc-shaped sheet two 10 are folded.

[0056] Embodiment two

[0057] A kind of engineering surveying and mapping sample collection sampling method, applied to the engineering surveying and mapping sample collection sampling device described above, characterized in that, the engineering surveying and mapping sample collection sampling method includes the following steps:

[0058] Step one: connect the wire rope of the winding device with the side frame 8, and then put the whole sampling device into the water area where sample collection is needed through the wire rope;

[0059] Step two: after the sampling device is lowered to the position where sample collection is needed, start the telescopic device 9, so that the closure frame two 11 moves close to the closure frame one 1, so that the arc-shaped sheet two 10 and the arc-shaped sheet one 2 are folded to form a cylindrical structure, and the gear one 16 and the tooth one 17 are engaged, and the cover plate 5 is turned to be parallel to the closure ring 3;

[0060] Step three: the protrusion of the driving rod 13 makes the hollow tube 14 rotate through the guide groove 29, so that the pressing plate 4 presses the driving ring 7, and the limiting block 22 presses the limiting ring 26 downward until the limiting block 22 moves into the annular groove, at this time the threads of the cover plate 5 are in abutment with the threads of the sealing ring;

[0061] Step four: the gear two 23 and the tooth two 21 are engaged, the driving ring 7 drives the cover plate 5 to rotate, and the cover plate 5 and the sealing ring are threadedly connected through the matching thread structure of the cover plate 5 and the sealing ring, and the snap ring 19 is inserted into the clamping groove 12, and the snap ring 19 is deformed to fill the clamping groove 12 to form a closed structure, at this time the arc-shaped plate one, the arc-shaped plate two and the cover plate 5 form a closed space, realizing low disturbance collection of the sample.

[0062] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. A sample collection and extraction device for engineering surveying, characterized in that, include: The enclosure is a first enclosure (1) and a second enclosure (11), and an arc-shaped piece (2) and an arc-shaped piece (10) respectively disposed on the first enclosure (1) and the second enclosure (11), and a closed ring (3) is disposed on the arc-shaped piece (2). The first enclosure (1) is equipped with a telescopic device (9) through a side frame (8). The telescopic device (9) causes the arc-shaped piece (2) to move closer to the arc-shaped piece (10) so that the arc-shaped piece (2) and the arc-shaped piece (10) form a hollow cylindrical structure. At the same time, the edges of the cylindrical structure are closed by the enclosure and the second enclosure (11). The cover plate (5) is set on the closing mechanism, and the closing mechanism is connected to the transmission mechanism through the flipping part. The transmission mechanism is set on the second closing frame (11). When the second closing frame (11) moves close to the first closing frame (1), the flipping part drives the closing mechanism and the cover plate (5) to flip close to the closing ring (3) through the transmission mechanism. The pressing plate (4) is set on the transmission mechanism. After the cover plate (5) is flipped to be parallel to the closing ring (3), the pressing plate (4) is made to press the closing mechanism through the transmission mechanism, so that the thread of the cover plate (5) abuts against the thread of the closing ring (3). At the same time, the closing mechanism is also driven by the transmission mechanism to rotate the cover plate (5) and connect it to the thread of the closing ring (3).

2. The engineering surveying sample collection and sampling device according to claim 1, characterized in that: The flipping component is a rotating seat (18) rotatably mounted on the side frame (8), and a gear (16) is provided at the end of the rotating seat (18). The closing mechanism is provided on the rotating seat (18). The transmission mechanism includes a slide (15) that is slidably mounted on the side frame (8) and connected to the second closed frame (11). The slide (15) has a tooth (17) that meshes with a gear (16).

3. The engineering surveying sample collection and sampling device according to claim 2, characterized in that: The transmission mechanism also includes a hollow tube (14) rotatably mounted on the side frame (8) and a drive rod (13) set on the slide (15). The drive rod (13) is inserted into the hollow tube (14), and a guide groove (29) is provided on the inner wall of the hollow tube (14). The protrusion on the drive rod (13) is slidably fitted into the guide groove (29). The pressing plate (4) is set on the outer surface of the hollow tube (14). When the cover plate (5) is flipped to be parallel to the closed ring (3), the protrusion of the drive rod (13) causes the hollow tube (14) and the pressing plate (4) to rotate through the guide groove (29).

4. The engineering surveying sample collection and sampling device according to claim 3, characterized in that: The closing mechanism includes a rotating ring (6) connected to a rotating seat (18), a limiting groove (25) is provided on the rotating ring (6), a drive ring (7) is installed on the cover plate (5) through a damping telescopic column (20), a limiting block (22) is provided on the drive ring (7) and slidably fitted in the limiting groove (25), an annular groove integrally formed with the limiting groove (25) is also provided on the rotating ring (6), a drive plate (24) is also provided on the drive ring (7), and the drive plate (24) abuts against the recessed surface of the cover plate (5).

5. The engineering surveying sample collection and sampling device according to claim 4, characterized in that: A limiting ring (26) is set in the annular groove by a spring (27). The sum of the thickness of the limiting ring (26) and the thickness of the limiting block (22) is less than the width of the annular groove.

6. The engineering surveying sample collection and sampling device according to claim 5, characterized in that: The outer surface of the drive ring (7) is provided with a gear 2 (23), and the transmission mechanism also includes a gear 2 (21) provided on the slide (15). After the hollow tube (14) rotates and the pressing plate (4) presses the drive ring (7), the gear 2 (21) meshes with the gear 2 (23).

7. The engineering surveying sample collection and sampling device according to claim 1, characterized in that: The cover plate (5) is provided with a retaining ring (19) near the opening end, and a retaining groove (12) is opened on the arc-shaped piece one (2) and the arc-shaped piece two (10). The retaining ring (19) and the retaining groove (12) are both wedge-shaped, and the angle of the wedge-shaped inclined surface of the retaining block is greater than the angle of the wedge-shaped inclined surface of the retaining groove (12).

8. The engineering surveying sample collection and sampling device according to claim 5, characterized in that: The limiting ring (26) passes through the rotating ring (6) and is provided with a clamping plate (28). A gap is formed between the clamping plate (28) and the outer protruding position of the rotating ring (6). The cover plate (5) is covered with a film on the side near the opening. The film is used to reduce the surface area of ​​the cover plate (5), and the end of the film is inserted into the gap.

9. The engineering surveying sample collection and sampling device according to claim 8, characterized in that: The film is made of polytetrafluoroethylene or perfluoroether rubber.

10. A method for collecting and sampling engineering surveying samples, applied to the engineering surveying sample collection and sampling equipment described in any one of claims 1 to 9, characterized in that, The sampling method for surveying and mapping in this project includes the following steps: Step 1: Connect the winding device's rope to the side frame (8), and then lower the entire sampling device into the water area where samples need to be collected using the rope; Step 2: After the sampling device descends to the position where the sample needs to be collected, activate the telescopic device (9) to move the second closed frame (11) closer to the first closed frame (1), so that the second arc plate (10) and the first arc plate (2) close together to form a cylindrical structure. At the same time, the first gear (16) and the first tooth (17) mesh, and the cover plate (5) flips to be parallel to the closed ring (3). Step 3: The protrusion of the drive rod (13) causes the hollow tube (14) to rotate through the guide groove (29), thereby pressing the pressing plate (4) against the drive ring (7). The limiting block (22) presses down on the limiting ring (26) until the limiting block (22) moves into the annular groove. At this time, the thread of the cover plate (5) abuts against the thread of the sealing ring. Step 4: Gear 2 (23) meshes with gear 2 (21), driving ring (7) drives cover plate (5) to rotate, and through the mutually compatible thread structure of cover plate (5) and sealing ring, cover plate (5) and sealing ring are threadedly connected. At the same time, retaining ring (19) is inserted into retaining groove (12). The retaining ring (19) deforms and fills retaining groove (12) to form a seal. At this time, a closed space is formed between arc plate 1, arc plate 2 and cover plate (5) to achieve low-disturbance sample collection.

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