An automatic closed soft soil sampler

Abstract

The utility model discloses an automatic closed soft soil sampler, including outer sleeve, inner sleeve, guide cone, mud inlet hole and outer cone cover, the bottom fixedly connected with guide cone of outer sleeve, the bottom lateral wall of outer sleeve is equipped with mud inlet hole, and the outer cone cover of mud inlet hole and guide cone outside is covered in the bottom of outer sleeve, and the bottom fixedly connected of outer cone cover and outer sleeve, the inner sleeve is movably connected in the inside of outer sleeve, and the inner sleeve top is installed with the push handle mechanism extending to the outside of outer sleeve, and the inner sleeve has two position attitudes under the cooperation of first stop groove, second stop groove and limit pin, thereby can be in sampling, make the inner sleeve be in high position, thereby convenient soft soil passes through the clearance fit of outer cone cover and guide cone and enters the mud inlet hole into the inner sleeve and is collected, can make the inner sleeve be in low position state simultaneously after sampling, thereby through the guide cone and seal the bottom opening of inner sleeve, avoid the soft soil falling when sampler and take out.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, specifically an automatic closed soft soil sampler. Background Technology

[0002] Soft soil generally refers to cohesive soils with high natural water content, high compressibility, low bearing capacity, and very low shear strength, exhibiting a soft plastic or fluid plastic state. Soft soil is a general term for a class of soils, not a specific type. In engineering, soft soil is often subdivided into soft cohesive soil, silty soil, silt, peat soil, and peat, etc. It is characterized by high natural water content, large natural void ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, high disturbance, poor permeability, complex layered distribution, and significant differences in physical and mechanical properties between layers.

[0003] Research on soft soil requires sampling. Traditional samplers are mostly cylindrical, which are inserted into the soft soil and then pulled out, bringing the soft soil out with the sampler. However, in the use of the above-mentioned existing technology, because the bottom of the sampler is open, there is a problem that the soft soil will detach from the sampler and cannot be brought out when the sampler is pulled out. Therefore, an automatic closed soft soil sampler is proposed to optimize the above-mentioned existing technology. Utility Model Content

[0004] The purpose of this invention is to provide an automatic closed soft soil sampler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automatic closed soft soil sampler includes an outer sleeve, a guide cone fixedly connected to the bottom end of the outer sleeve, a mud inlet hole on the bottom side wall of the outer sleeve, an outer cone sleeve located outside the mud inlet hole and the guide cone and fixedly connected to the bottom of the outer sleeve, an inner sleeve movably connected inside the outer sleeve, a push handle mechanism extending to the outside of the outer sleeve installed at the top of the inner sleeve, a spring fixedly connected to the top of the inner sleeve, a compression ring fixedly connected to the bottom of the spring, the compression ring abutting against the top surface of the inner sleeve, a first stop groove, a second stop groove and a transverse groove provided on both end faces of the outer sleeve, the first stop groove and the second stop groove being parallel to each other, the two ends of the transverse groove communicating with the top ends of the first stop groove and the second stop groove respectively, and symmetrically distributed limiting pins fixedly connected to both ends of the inner sleeve, the diameter of the limiting pins being equal to the width of the first stop groove, the second stop groove and the transverse groove, the outer end of the limiting pins extending into the second stop groove.

[0007] As a further embodiment of this utility model, a pressure relief hole is provided at the upper end of the inner sleeve corresponding to the position of the first stop groove.

[0008] As a further embodiment of this utility model: the outer sleeve includes an upper sleeve and a lower sleeve. The upper sleeve is threaded to the top of the lower sleeve. The bottom of the upper sleeve is provided with an internal threaded sleeve. The top of the lower sleeve is provided with an external thread. The push handle mechanism passes through the upper sleeve. The guide cone is fixedly connected to the bottom end of the lower sleeve. The mud inlet hole is opened on the bottom side wall of the lower sleeve. The outer cone sleeve is fixedly connected to the lower sleeve. The first stop groove, the second stop groove and the transverse groove are jointly opened on the upper sleeve. The inner sleeve is located inside the lower sleeve, and the top end of the lower sleeve extends into the upper sleeve. The spring is fixedly connected to the top end of the upper sleeve.

[0009] As a further improvement of this utility model: the pusher mechanism includes a guide sleeve, which is fixedly connected to the top surface of the inner sleeve and movably passes through the top of the outer sleeve.

[0010] As a further embodiment of this utility model, the pusher mechanism also includes an extended pusher, the bottom end of which passes through the guide sleeve and the inner sleeve and is fitted with a push plate, the push plate being slidably connected to the inner wall of the inner sleeve.

[0011] As a further embodiment of this utility model: a fixing bolt is passed through both the extension push handle and the guide sleeve. The fixing bolt is located at the top of the guide sleeve, and a nut is threaded to the end of the fixing bolt. A circular hole for the fixing bolt to pass through and slide is opened on both the guide sleeve and the extension push handle.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The inner sleeve of this utility model has two positional postures with the cooperation of the first stop groove, the second stop groove and the limiting pin. This allows the inner sleeve to be in a high position during sampling, so that soft soil can easily enter the inner sleeve through the mud inlet hole of the outer cone sleeve and the guide cone and be collected. At the same time, the inner sleeve can be in a low position after sampling, so that the bottom opening of the inner sleeve can be sealed by the guide cone to prevent soft soil from falling when the sampler is taken out.

[0014] 2. The present invention can release air during sampling of the inner sleeve by setting pressure relief holes, so as to avoid the positive pressure inside the inner sleeve affecting the entry of soft soil.

[0015] 3. When the sampler of this utility model is removed, the bottom end of the inner sleeve is blocked by the guide cone, and the pressure relief hole is blocked by the upper sleeve, thereby sealing the inner sleeve and achieving the effect of storing soft soil samples.

[0016] 4. In this utility model, the upper sleeve and the lower sleeve are threaded together, so they can be disassembled. The extension push handle and the guide sleeve are assembled and installed by fixing bolts, so they can be disassembled. Then, when the lower sleeve is removed, the push plate can be pushed by the extension push handle to push out the soft mud collected in the inner sleeve, which facilitates the removal of the sample. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an automatic closed soft soil sampler.

[0018] Figure 2 This is a front view of an automatic closed soft soil sampler.

[0019] Figure 3 This is a diagram showing the closed state of the inner sleeve in an automatic closed soft soil sampler.

[0020] Figure 4 This is a diagram showing the soil discharge status of the inner sleeve in an automatic closed soft soil sampler.

[0021] In the diagram: 1. Outer sleeve; 2. Guide cone; 3. Mud inlet hole; 4. Outer cone sleeve; 5. Inner sleeve; 6. Push handle mechanism; 7. Spring; 8. Extrusion ring; 9. Limiting pin; 10. First stop groove; 11. Second stop groove; 12. Horizontal groove; 13. Pressure relief hole; 14. Upper sleeve; 15. Lower sleeve; 16. Guide sleeve; 17. Extended push handle; 18. Push plate; 19. Fixing bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4In this embodiment of the present invention, an automatic closed soft soil sampler includes an outer sleeve 1, a guide cone 2 fixedly connected to the bottom end of the outer sleeve 1, a mud inlet hole 3 provided on the bottom side wall of the outer sleeve 1, an outer cone sleeve 4 located outside the mud inlet hole 3 and the guide cone 2 fitted at the bottom of the outer sleeve 1, the outer cone sleeve 4 being fixedly connected to the bottom of the outer sleeve 1, an inner sleeve 5 being movably connected inside the outer sleeve 1, a push handle mechanism 6 extending to the outside of the outer sleeve 1 being installed at the top end of the inner sleeve 5, a spring 7 being fixedly connected to the top end of the inner sleeve 1, a compression ring 8 being fixedly connected to the bottom end of the spring 7, the compression ring 8 abutting against the top surface of the inner sleeve 5 and sliding in close contact, and a through first stop groove 10 and a second stop groove 10 being provided on both end faces of the outer sleeve 1. The inner sleeve 5 has a positioning groove 11 and a horizontal groove 12. The first stop groove 10 and the second stop groove 11 are parallel to each other. The two ends of the horizontal groove 12 are connected to the top of the first stop groove 10 and the second stop groove 11, respectively. The inner sleeve 5 has symmetrically distributed limiting pins 9 fixedly connected to both ends. The diameter of the limiting pins 9 is equal to the width of the first stop groove 10, the second stop groove 11 and the horizontal groove 12. The outer end of the limiting pins 9 extends into the second stop groove 11. The initial height of the inner sleeve 5 is limited by the second stop groove 11 and the limiting pins 9, ensuring that the bottom opening of the inner sleeve 5 is above the mud inlet hole 3. The lowest position of the inner sleeve 5 is limited by the setting of the first stop groove 10, preventing the inner sleeve 5 from completely slipping out of the upper sleeve 14.

[0024] The limiting pin 9 can move within the first stop groove 10, the second stop groove 11, and the transverse groove 12. In conjunction with the spring 7 and the compression ring 8, the inner sleeve 5 can be maintained at two heights. Thus, the inner sleeve 5 can be squeezed by the push handle mechanism 6, which simultaneously drives the outer sleeve 1 to squeeze downwards. This allows soft soil to enter the inner sleeve 5 through the gap between the outer cone sleeve 4 and the guide cone 2 and the mud inlet hole 3, where it is collected. At the same time, the inner sleeve 5 can press down on the top surface of the guide cone 2, thus closing the opening of the inner sleeve 5 and preventing soft soil from falling out of the inner sleeve 5 when the sampler is removed.

[0025] A pressure relief hole 13 is provided at the upper end of the inner sleeve 5 corresponding to the position of the first stop groove 10. The initial position of the pressure relief hole 13 corresponds to the first stop groove 10. When the inner sleeve 5 enters the first stop groove 10 from the second stop groove 11 through the transverse groove 12, the pressure relief hole 13 is blocked by the outer sleeve 1, forming a sealing effect.

[0026] The pressure relief hole 13 can be used to vent air when the inner sleeve 5 is sampled, so as to avoid the positive pressure inside the inner sleeve 5 affecting the entry of soft soil.

[0027] The outer sleeve 1 includes an upper sleeve 14 and a lower sleeve 15. The upper sleeve 14 is threaded to the top of the lower sleeve 15. The bottom of the upper sleeve 14 is provided with an internal thread sleeve, and the top of the lower sleeve 15 is provided with an external thread. The push handle mechanism 6 passes through the upper sleeve 14. The guide cone 2 is fixedly connected to the bottom end of the lower sleeve 15. The mud inlet hole 3 is opened on the bottom side wall of the lower sleeve 15. The outer cone sleeve 4 is fixedly connected to the lower sleeve 15. The first stop groove 10, the second stop groove 11 and the transverse groove 12 are jointly opened on the upper sleeve 14. The inner sleeve 5 is located inside the lower sleeve 15, and the top end of the lower sleeve 15 extends into the upper sleeve 14. The spring 7 is fixedly connected to the top end inside the upper sleeve 14.

[0028] The pusher mechanism 6 includes a guide sleeve 16, which is fixedly connected to the top surface of the inner sleeve 5 and moves through the top of the outer sleeve 1. The outer sleeve 1 has a round hole for the guide sleeve 16 to pass through. The guide sleeve 16 remains protruding from the outer sleeve 1 when the inner sleeve 5 is in the lower limit of its fully moved position.

[0029] The pusher mechanism 6 also includes an extended pusher 17, the bottom end of which passes through the guide sleeve 16 and the inner sleeve 5 and is fitted with a pusher plate 18, which is slidably connected to the inner wall of the inner sleeve 5.

[0030] A fixing bolt 19 is passed through both the extension push handle 17 and the guide sleeve 16. The fixing bolt 19 is located at the top of the guide sleeve 16, and a nut is threaded to the end of the fixing bolt 19. A circular hole is opened on both the guide sleeve 16 and the extension push handle 17 for the fixing bolt 19 to pass through and slide.

[0031] The upper sleeve 14 and the lower sleeve 15 are threaded together, allowing them to be disassembled. The extension push handle 17 and the guide sleeve 16 are assembled and installed by fixing bolts 19, allowing them to be disassembled. With the lower sleeve 15 removed, the push plate 18 can be pushed by the extension push handle 17 to push out the soft mud collected in the inner sleeve 5, facilitating sample removal.

[0032] The working principle of this utility model is as follows:

[0033] In use, the sampler is assembled and reset. The extension push handle 17 is pulled upward until the push plate 18 is reset. At this time, the extension push handle 17 and the guide sleeve 16 are fixed by the fixing bolt 19. The inner sleeve 5 is then pulled upward until the limit pin 9 corresponds to the transverse groove 12. The limit pin 9 is moved through the transverse groove 12 to correspond to the second stop groove 11. At this time, the push handle mechanism 6 is released. Under the action of the spring 7 and the compression ring 8, the inner sleeve 5 is moved downward, so that the limit pin 9 enters the second stop groove 11 to form a limit. At this time, the lower sleeve 15 is threaded to the bottom end of the upper sleeve 14. The sampler is then picked up, and the guide cone 2 and the outer cone sleeve 4 are inserted into the soft soil. The soft soil enters the inner sleeve 5 through the mud inlet hole 3 through the gap between the outer cone sleeve 4 and the guide cone 2 and is collected. At this time, the air in the inner sleeve 5 is discharged through the pressure relief hole 13. At this time, the outer sleeve 1 is held still, and the inner sleeve 5 is pushed upward by the push handle mechanism 6. Lift up until the limiting pin 9 corresponds to the transverse groove 12. Move the limiting pin 9 through the transverse groove 12 to correspond to the first stop groove 10. At this time, the lower pressure relief hole 13 overlaps with the inner wall of the upper sleeve 14. At this time, the inner sleeve 5 is pressed down by the push handle mechanism 6, so that the inner sleeve 5 moves down inside the outer sleeve 1 and abuts against the top surface of the guide cone 2 to form a blockage. At the same time, the spring 7 cooperates with the compression ring 8 to press the inner sleeve 5 downward, so that the state of the inner sleeve 5 is maintained. Further grasp the outer sleeve 1 and lift the whole sampler to complete the sampling work. At this time, the sample is isolated and stored in the inner sleeve 5. When it is necessary to take out the sample, unscrew the lower sleeve 15 to expose the lower part of the inner sleeve 5. Further unscrew the fixing bolt 19. At this time, the inner sleeve 5 is limited by the limiting pin 9 and the first stop groove 10. Then, push the push plate 18 by extending the push handle 17, so that the soft soil in the inner sleeve 5 can be pushed out, thereby realizing the removal.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic enclosed soft soil sampler, comprising an outer sleeve (1), characterized in that: The bottom end of the outer sleeve (1) is fixedly connected to a guide cone (2). A mud inlet hole (3) is provided on the bottom side wall of the outer sleeve (1). An outer cone sleeve (4) located outside the mud inlet hole (3) and the guide cone (2) is fitted on the bottom of the outer sleeve (1). The outer cone sleeve (4) is fixedly connected to the bottom of the outer sleeve (1). An inner sleeve (5) is movably connected inside the outer sleeve (1). A push handle mechanism (6) extending to the outside of the outer sleeve (1) is installed at the top of the inner sleeve (5). A spring (7) is fixedly connected to the top of the inner sleeve (1). A compression ring (8) is fixedly connected to the bottom of the spring (7). The compression ring (8) abuts against the inner sleeve. The top surface of the sleeve (5) and both sides of the outer sleeve (1) are provided with a through first stop groove (10), a second stop groove (11) and a transverse groove (12). The first stop groove (10) and the second stop groove (11) are parallel to each other. The two ends of the transverse groove (12) are connected to the top of the first stop groove (10) and the second stop groove (11) respectively. The two ends of the inner sleeve (5) are fixedly connected with symmetrically distributed limiting pins (9). The diameter of the limiting pins (9) is equal to the width of the first stop groove (10), the second stop groove (11) and the transverse groove (12). The outer end of the limiting pins (9) extends into the second stop groove (11).

2. The automatic closed soft soil sampler according to claim 1, characterized in that: The inner sleeve (5) has a pressure relief hole (13) at the position corresponding to the first stop groove (10) on its upper end.

3. The automatic closed soft soil sampler according to claim 1, characterized in that: The outer sleeve (1) includes an upper sleeve (14) and a lower sleeve (15). The upper sleeve (14) is threaded to the top of the lower sleeve (15). The push handle mechanism (6) passes through the upper sleeve (14). The guide cone (2) is fixedly connected to the bottom of the lower sleeve (15). The mud inlet hole (3) is opened on the bottom side wall of the lower sleeve (15). The outer cone sleeve (4) is fixedly connected to the lower sleeve (15). The first stop groove (10), the second stop groove (11) and the transverse groove (12) are opened together on the upper sleeve (14). The inner sleeve (5) is located inside the lower sleeve (15), and the top of the lower sleeve (15) extends into the upper sleeve (14). The spring (7) is fixedly connected to the top of the inner part of the upper sleeve (14).

4. An automatic closed-type soft soil sampler according to claim 1, characterized in that: The pusher mechanism (6) includes a guide sleeve (16), which is fixedly connected to the top surface of the inner sleeve (5) and movably passes through the top of the outer sleeve (1).

5. An automatic closed soft soil sampler according to claim 4, characterized in that: The pusher mechanism (6) also includes an extended pusher (17), the bottom end of which passes through the guide sleeve (16) and the inner sleeve (5) and is fitted with a pusher plate (18), which is slidably connected to the inner wall of the inner sleeve (5).

6. An automatic closed soft soil sampler according to claim 5, characterized in that: A fixing bolt (19) is passed through both the extension push handle (17) and the guide sleeve (16). The fixing bolt (19) is located at the top of the guide sleeve (16). A nut is threaded to the end of the fixing bolt (19). A circular hole for the fixing bolt (19) to pass through and slide is opened on both the guide sleeve (16) and the extension push handle (17).

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