A static pressure rapid soil sampling device

Abstract

The present invention belongs to the technical field of soil sampling equipment, and specifically relates to a static pressure type rapid soil sampling equipment. It comprises a base, a top plate is fixedly connected to the base through a plurality of support columns, the bottom end of the top plate is connected to a fixed plate through a hydraulic telescopic rod, a first through hole is provided on the top plate, a second through hole is provided at a position corresponding to the first through hole on the fixed plate, a probe rod is passed through the first through hole and the second through hole, a locking mechanism for fixing the probe rod is fixedly connected to the upper surface of the fixed plate, a sampling mechanism is threadedly connected to the bottom end of the probe rod, a third through hole is provided on the base for the sampling mechanism to pass through, and the first through hole, the second through hole and the third through hole are all located on the same straight line. In the present invention, the fixed plate is driven to move downward by the hydraulic telescopic rod, which can drive the probe rod and the sampling mechanism to complete the downward pressing action, thereby completing the static pressure sampling of the soil, thereby avoiding the occurrence of soil layer disturbance, and ensuring the accuracy and authenticity of the sampling results.

Description

Technical Field

[0001] The invention belongs to the technical field of soil sampling equipment, and in particular relates to a static pressure type rapid soil sampling equipment. Background Art

[0002] Existing soil sampling methods include rotary drilling and impact methods, but when using rotary drilling and impact methods for soil sampling, the control of pressure or hammer force is poor, which can easily cause disturbance to the soil layer, thereby affecting the accuracy of the sampling results. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a static pressure type rapid soil sampling device, and specifically discloses the following technical solutions:

[0004] A static pressure type rapid soil sampling device comprises a base, wherein a top plate is fixedly connected to the base via a plurality of support columns, the bottom end of the top plate is connected to a fixing plate via a hydraulic telescopic rod, a first through hole is provided on the top plate, a second through hole is provided on the fixing plate at a position corresponding to the first through hole, probe rods are passed through the first through hole and the second through hole, a locking mechanism for fixing the probe rod is fixedly connected to the upper surface of the fixing plate, a sampling mechanism is threadedly connected to the bottom end of the probe rod, a third through hole is provided on the base for the sampling mechanism to pass through, and the first through hole, the second through hole and the third through hole are all located on the same straight line.

[0005] Furthermore, the sampling mechanism includes an outer sleeve, which is formed by connecting two semicircular sleeves, the top end of the outer sleeve is threadedly connected with a pipe cap, the side of the pipe cap is provided with an exhaust hole, the top end of the pipe cap is threadedly connected to the bottom end of the probe rod, the bottom end of the outer sleeve is threadedly connected with a pipe boot, an inner sampling tube is installed in the outer sleeve, the inner sampling tube is formed by connecting two semicircular sampling tubes and the outer diameter of the inner sampling tube is the same as the inner diameter of the outer sleeve, an annular limiting protrusion is provided on the top inner wall of the outer sleeve, the inner wall of the pipe boot is provided beyond the inner wall of the outer sleeve, and the inner sampling tube is fixed between the annular limiting protrusion and the pipe boot.

[0006] Furthermore, a plurality of spring sheets are circumferentially arranged on the inner wall of the pipe shoe, the bottom ends of the spring sheets are fixedly connected to the inner wall of the pipe shoe, and the top ends of the spring sheets are inclined toward the through hole in the center of the pipe shoe.

[0007] Furthermore, a groove for accommodating the spring sheet is provided on the inner side wall of the pipe shoe.

[0008] Furthermore, the outer sleeve is made of stainless steel, and the inner sampling tube is made of PVC.

[0009] Furthermore, a clamping plate is fixedly connected inside the pipe cap, a guide column is slidably provided through the center of the clamping plate, a first push plate is fixedly connected to the bottom end of the guide column, a second push plate is fixedly connected to the top end of the guide column, and a trigger button is fixedly installed on the top inner wall of the pipe boot, and the trigger button is connected to the alarm on the base through a wire.

[0010] Furthermore, a return spring is sleeved on the portion of the guide column between the clamping plate and the first push plate.

[0011] Furthermore, the locking mechanism includes a fixed seat and a movable buckle, the fixed seat is fixedly connected to the upper surface of the fixed plate, the fixed seat and the movable buckle are respectively located on both sides of the probe rod, and semicircular grooves are respectively provided on the side where the fixed seat and the movable buckle are close to each other, the two ends of the movable buckle are fixedly connected to the fixed seat by bolts, and the probe rod is located between the two semicircular grooves of the fixed seat and the movable buckle.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, the fixed plate is driven downward by the hydraulic telescopic rod, which can drive the probe rod and the sampling mechanism to complete the downward pressing action, thereby completing the static pressure sampling of the soil, thereby avoiding the occurrence of soil layer disturbance and ensuring the accuracy and authenticity of the sampling results;

[0014] The outer sleeve and the inner sampling tube are both split and docked structures, making it easy to handle the sample after sampling;

[0015] A number of spring sheets are arranged circumferentially on the inner wall of the pipe shoe, the bottom ends of the spring sheets are fixedly connected to the inner wall of the pipe shoe, and the top ends of the spring sheets are inclined toward the through hole in the center of the pipe shoe. During the rising process of the sampling mechanism, the spring sheets prevent the soil samples from falling out of the inner sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the overall structure of the present invention.

[0017] Figure 2 It is a top view of the fixing plate and the locking mechanism.

[0018] Figure 3 A cross-sectional view of the sampling mechanism.

[0019] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0020] Figure 5 for Figure 3 A partial enlarged view of point B in the middle.

[0021] Figure 6 This is a bottom view of the sampling mechanism.

[0022] 1-base, 2-support column, 3-top plate, 4-hydraulic telescopic rod, 5-fixed plate, 6-probe rod, 7-outer sleeve, 8-pipe cap, 9-exhaust hole, 10-pipe boot, 11-inner sampling tube, 12-annular limiting protrusion, 13-spring sheet, 14-groove, 15-card, 16-guide column, 17-first push plate, 18-second push plate, 19-reset spring, 20-trigger button, 21-fixed seat, 22-movable buckle, 23-bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the 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 without creative work are within the scope of protection of the present invention.

[0024] Reference Figure 1-6 A static pressure rapid soil sampling device comprises a base 1, a top plate 3 is fixedly connected to the base 1 through a plurality of support columns 2, the bottom end of the top plate 3 is connected to a fixing plate 5 through a hydraulic telescopic rod 4, a first through hole is provided on the top plate 3, a second through hole is provided on the fixing plate 5 at a position corresponding to the first through hole, a probe rod 6 is passed through the first through hole and the second through hole, a locking mechanism for fixing the probe rod 6 is fixedly connected to the upper surface of the fixing plate 5, a sampling mechanism is threadedly connected to the bottom end of the probe rod 6, a third through hole is provided on the base 1 for the sampling mechanism to pass through, and the first through hole, the second through hole and the third through hole are all located on the same straight line.

[0025] In this embodiment, the sampling mechanism includes an outer sleeve 7, which is formed by connecting two semicircular sleeves. The top end of the outer sleeve 7 is threadedly connected with a pipe cap 8, and the side of the pipe cap 8 is provided with an exhaust hole 9. The top end of the pipe cap 8 is threadedly connected to the bottom end of the probe rod 6, and the bottom end of the outer sleeve 7 is threadedly connected with a pipe boot 10. An inner sampling tube 11 is installed in the outer sleeve 7, and the inner sampling tube 11 is formed by connecting two semicircular sampling tubes and the outer diameter of the inner sampling tube 11 is the same as the inner diameter of the outer sleeve 7. An annular limiting protrusion 12 is provided on the top inner wall of the outer sleeve 7, and the inner wall of the pipe boot 10 is arranged beyond the inner wall of the outer sleeve 7. The inner sampling tube 11 is fixed between the annular limiting protrusion 12 and the pipe boot 10.

[0026] When the sampling mechanism is sampling downward, the exhaust hole 9 can make the inside and outside of the sampling mechanism connected to ensure the same air pressure, thereby ensuring that the soil sample can normally enter the inner sampling tube 11.

[0027] In this embodiment, a plurality of spring sheets 13 are circumferentially arranged on the inner wall of the pipe shoe 10, the bottom ends of the spring sheets 13 are fixedly connected to the inner wall of the pipe shoe 10, the top ends of the spring sheets 13 are inclined toward the through hole at the center of the pipe shoe 10 and exceed the inner wall of the inner sampling tube 11, when the sampling mechanism samples downward, the soil sample enters the inner sampling tube 11 through the pipe shoe 10, at this time, the spring sheets 13 contract under the pressure of the soil sample, thereby ensuring that the soil sample smoothly enters the inner sampling tube 11, when the sampling is completed, in the process of lifting the sampling mechanism, the rebound of the spring sheets 13 can jam the soil sample in the inner sampling tube 11, and prevent the soil sample from falling out of the inner sampling tube 11.

[0028] In this embodiment, a groove 14 for accommodating the spring sheet 13 is formed on the inner wall of the pipe shoe 10 . The spring sheet 13 can enter the groove 14 after being subjected to pressure, thereby avoiding affecting the soil sample from entering the inner sampling tube 11 .

[0029] In this embodiment, the outer sleeve 7 is made of stainless steel, and the inner sampling tube 11 is made of PVC. The inner wall of the inner sampling tube 11 is smooth, thereby ensuring that the soil sample can enter smoothly.

[0030] In this embodiment, a clamping plate 15 is fixedly connected inside the pipe cap 8, a guide column 16 is slidably penetrated through the center of the clamping plate 15, a first push plate 17 is fixedly connected to the bottom end of the guide column 16, a second push plate 18 is fixedly connected to the top end of the guide column 16, a trigger button 20 is fixedly installed on the top inner wall of the pipe shoe 10, and the trigger button 20 is connected to the alarm on the base 1 through a wire. When the inner sampling tube 11 is full of soil samples, the topmost soil sample will press the first push plate 17 upward, thereby driving the guide column 16 and the second push plate 18 to rise, and the second push plate 18 presses the trigger button 20 to make the alarm sound, so as to remind the staff that the sampling has been completed.

[0031] In this embodiment, a reset spring 19 is sleeved on the portion of the guide post 16 between the clamping plate 15 and the first push plate 17 . The reset spring 19 can push the guide post 16 to reset.

[0032] In this embodiment, the locking mechanism includes a fixed seat 21 and a movable buckle 22, the fixed seat 21 is fixedly connected to the upper surface of the fixed plate 5, the fixed seat 21 and the movable buckle 22 are respectively located on both sides of the probe rod 6, and the sides of the fixed seat 21 and the movable buckle 22 close to each other are respectively provided with semicircular grooves, the two ends of the movable buckle 22 are fixedly connected to the fixed seat 21 by bolts 23, and the probe rod 6 is located between the two semicircular grooves of the fixed seat 21 and the movable buckle 22. By tightening the bolts 23 at both ends of the movable buckle 22, the movable buckle 22 and the fixed seat 21 can be used to firmly lock the probe rod 6, so that the probe rod 6 can be pressed down or lifted together with the fixed plate 5 under the action of the hydraulic telescopic rod 4.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A static pressure rapid soil sampling device, characterized in that: The invention comprises a base, a top plate is fixedly connected to the base through a plurality of support columns, the bottom end of the top plate is connected to a fixing plate through a hydraulic telescopic rod, a first through hole is provided on the top plate, a second through hole is provided on the fixing plate at a position corresponding to the first through hole, a probe rod is passed through the first through hole and the second through hole, a locking mechanism for fixing the probe rod is fixedly connected to the upper surface of the fixing plate, a sampling mechanism is threadedly connected to the bottom end of the probe rod, a third through hole is provided on the base for the sampling mechanism to pass through, and the first through hole, the second through hole and the third through hole are all located on the same straight line; The sampling mechanism comprises an outer sleeve, which is formed by butting two semicircular sleeves together, a pipe cap is threadedly connected to the top of the outer sleeve, an exhaust hole is arranged on the side of the pipe cap, the top of the pipe cap is threadedly connected to the bottom end of the probe rod, the bottom end of the outer sleeve is threadedly connected to a pipe boot, an inner sampling tube is installed in the outer sleeve, the inner sampling tube is formed by butting two semicircular sampling tubes together and the outer diameter of the inner sampling tube is the same as the inner diameter of the outer sleeve, an annular limiting protrusion is arranged on the top inner wall of the outer sleeve, the inner wall of the pipe boot is arranged beyond the inner wall of the outer sleeve, and the inner sampling tube is fixed between the annular limiting protrusion and the pipe boot; A clamping plate is fixedly connected inside the pipe cap, a guide column is slidably penetrated through the center of the clamping plate, a first push plate is fixedly connected to the bottom end of the guide column, a second push plate is fixedly connected to the top end of the guide column, a trigger button is fixedly installed on the top inner wall of the pipe boot, and the trigger button is connected to the alarm on the base through a wire; The locking mechanism includes a fixed seat and a movable buckle, the fixed seat is fixedly connected to the upper surface of the fixed plate, the fixed seat and the movable buckle are respectively located on both sides of the probe rod, and semicircular grooves are respectively provided on the sides where the fixed seat and the movable buckle are close to each other, the two ends of the movable buckle are fixedly connected to the fixed seat by bolts, and the probe rod is located between the two semicircular grooves of the fixed seat and the movable buckle.

2. The static pressure rapid soil sampling device according to claim 1, characterized in that: A plurality of spring sheets are circumferentially arranged on the inner wall of the pipe shoe, the bottom ends of the spring sheets are fixedly connected to the inner wall of the pipe shoe, and the top ends of the spring sheets are inclined toward the through hole in the center of the pipe shoe.

3. A static pressure rapid soil sampling device according to claim 2, characterized in that: A groove for accommodating the spring sheet is provided on the inner side wall of the pipe shoe.

4. The static pressure rapid soil sampling device according to claim 1, characterized in that: The outer sleeve is made of stainless steel, and the inner sampling tube is made of PVC.

5. The static pressure rapid soil sampling device according to claim 1, characterized in that: A return spring is sleeved on the portion of the guide column between the clamping plate and the first push plate.

Images