Vertical distribution stratified sampler for radioactive contamination of soil

Abstract

The utility model relates to the technical field of soil sample collection equipment, in particular to a vertical distribution stratified sampler for soil radioactive contamination, which is characterized in that a lifting guide rod is fixedly arranged on a base, a mounting seat is fixedly arranged at the upper end of the lifting guide rod, a threaded rod penetrates through the mounting seat through a bearing in a screwing manner, and the threaded rod and the lifting guide rod are arranged in parallel; the lifting seat is screwed and sleeved on the threaded rod through threads, the lifting seat is movably sleeved on the lifting guide rod, the plurality of sampling barrels are arranged on the lower surface of the lifting seat, and the lower ends of the sampling barrels are movably arranged in the base in a penetrating manner; a standard stepping driving structure is adopted, a guiding and transmission driving unit is adopted, tunneling sampling of the sampling barrel and taking out after sampling are completed are achieved, therefore, standardized operation can be conducted, a labor-saving lever structure is adopted, and manual labor during operation is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of soil sample collection equipment, specifically to a vertically distributed stratified sampler for soil radioactive contamination. Background Technology

[0002] Radioactive contamination of soil will cause radioactive substances to seep and settle over time. Due to the different properties of different radioactive substances, stratification will occur during the settling process. Therefore, when collecting samples of radioactive soil, stratified sampling is required. The traditional sampling method involves artificial drilling and tamping of holes using a sleeve-shaped sampler. The sampler is inserted into the soil layer using a manual hammer to obtain the sample, and then the sampler is pulled out. This makes the sampling process laborious and introduces many uncertainties. Therefore, a standardized and integrated sampling device needs to be designed. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a vertically distributed stratified sampler for radioactive soil pollution. It adopts a standard stepper drive structure and a guide and transmission drive unit to realize the excavation and sampling of the sampling tube and the retrieval after sampling, thereby enabling standardized operation. It also adopts a labor-saving lever structure to reduce manual labor during operation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] It includes a base, and it also includes:

[0006] A lifting guide rod, wherein the lifting guide rod is fixedly mounted on the base;

[0007] Mounting base, wherein the mounting base is fixedly installed at the upper end of the lifting guide rod;

[0008] The threaded rod is screwed onto the mounting base via a bearing, and the threaded rod is arranged parallel to the lifting guide rod.

[0009] The lifting seat is threadedly fitted onto the threaded rod and is movably fitted onto the lifting guide rod.

[0010] Sampling cylinders, of which there are several, are arranged on the lower surface of the lifting seat, with the lower end of the sampling cylinders movably inserted into the base.

[0011] Preferably, a plurality of connecting seats are fixedly provided on the lower surface of the mounting base, and a limiting pin is fixedly provided on the side wall of the connecting seat. The upper end of the sampling tube is sleeved on the connecting seat, and a limiting groove is opened on the upper side of the sampling tube. The sampling tube is sleeved on the limiting pin through the limiting groove.

[0012] Preferably, a connecting sleeve is fitted on the connecting seat, and a connecting groove is provided on the upper port side of the connecting sleeve. The connecting sleeve is fitted onto the limiting pin through the connecting groove. A connecting pin is fixedly provided at the lower end of the connecting sleeve. The sampling cylinder is fitted onto the lower end of the connecting sleeve, and the sampling cylinder is fitted onto the connecting pin through the limiting groove.

[0013] Preferably, a mounting sleeve is screwed onto the mounting base via a bearing, and a transmission spline sleeve is screwed onto the mounting sleeve via a bearing. The transmission spline sleeve and the upper end of the threaded rod are connected by a bevel gear set.

[0014] Preferably, two mounting brackets are symmetrically fixed on the left and right side walls of the mounting base. A drive spline sleeve is screwed onto the mounting bracket via a bearing hub. A spline shaft is inserted into the drive spline sleeve, and the spline shaft is inserted into one of the drive spline sleeves. A handle is fixedly mounted on the sleeve of the bearing hub.

[0015] Preferably, a support guide rod is fixedly provided on the inner wall of the mounting sleeve, and the support guide rod is arranged parallel to the transmission spline sleeve. A guide groove is provided on the transmission spline sleeve. A connecting rod is fixedly provided on one end of the spline shaft located in the guide groove. A guide sleeve is fitted on the support guide rod. The connecting rod passes through the guide groove and is fixedly mounted on the guide sleeve. A spring is fitted on the support guide rod, wherein one end of the spring abuts against the inner wall of the mounting sleeve, and the other end of the spring abuts against the end wall of the guide sleeve.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This solution uses a lifting guide rod and a threaded rod to set up a lifting and movable lifting seat, and a connecting seat is set on the lifting seat. The sampling cylinder can be installed through the connecting rod or directly installed. The lifting seat drives the sampling cylinder to move up and down to achieve sampling.

[0018] 2. This solution uses a transmission spline sleeve and bevel gear assembly to drive the threaded rod. Two sets of drive spline sleeves with opposite rotation directions are set up, and the transmission between the drive spline sleeve and the transmission spline sleeve is realized through a telescopic spline shaft. By switching different drive spline sleeves, the threaded rod can rotate in different directions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 yes Figure 1 Top side view.

[0021] Figure 3 This is a structural schematic diagram of the lifting seat, connecting sleeve, and sampling cylinder in this utility model.

[0022] Figure 4 This is a schematic diagram of the transmission spline sleeve and spline shaft in this utility model.

[0023] Figure 5 This is a schematic diagram of the sampling cylinder in this utility model.

[0024] Figure 6 This is a structural schematic diagram of the lifting seat and connecting seat in this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base, 2. Lifting guide rod, 3. Mounting seat, 4. Threaded rod, 5. Lifting seat, 6. Sampling cylinder, 7. Connecting seat, 8. Limiting pin, 9. Limiting groove, 10. Connecting sleeve, 11. Connecting groove, 12. Mounting sleeve, 13. Transmission spline sleeve, 14. Mounting bracket, 15. Drive spline sleeve, 16. Bearing hub, 17. Spline shaft, 18. Handle, 19. Support guide rod, 20. Guide groove, 21. Connecting rod, 22. Guide sleeve, 23. Spring, 24. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] like Figure 1-6 As shown, the specific implementation adopts the following technical solution:

[0029] This specific embodiment includes a base 1, a lifting seat 5, and a sampling cylinder 6. A lifting guide rod 2 is fixedly mounted on the base 1. A mounting base 3 is fixedly mounted on the upper end of the lifting guide rod 2. A threaded rod 4 is screwed through the mounting base 3 via a bearing, and the threaded rod 4 is parallel to the lifting guide rod 2. The lifting seat 5 is movably sleeved on the lifting guide rod 2, and the lifting seat 5 and the threaded rod 4 are screwed together. Several connecting seats 7 are fixedly mounted on the lower surface of the lifting seat 5, and limit pins 8 are fixedly mounted on the side walls of the connecting seats 7. The upper port of the sampling cylinder 6... A limiting groove 9 is provided on the side. The upper end of the sampling cylinder 6 is sleeved on the connecting seat 7, and the limiting groove 9 on the sampling cylinder 6 and the limiting pin 8 on the connecting seat 7 are mutually engaged. Alternatively, a connecting sleeve 10 is installed on the connecting seat 7. A connecting groove 11 is provided on the side of the upper end of the connecting sleeve 10. The connecting sleeve 10 is engaged with the limiting pin 8 on the connecting seat 7 through the connecting groove 11. A connecting pin 12 is fixedly provided on the lower end side wall of the connecting sleeve 10. The sampling cylinder 6 is sleeved on the lower end of the connecting sleeve 10, and the sampling cylinder 6 is engaged with the connecting pin 12 on the connecting sleeve 10 through the limiting groove 9.

[0030] Mounting base 3 is fitted with a mounting sleeve 13 via bearings. A transmission spline sleeve 14 is fitted inside the mounting sleeve 13 via bearings. The transmission spline sleeve 14 is connected to the upper end of the threaded rod 4 via a bevel gear set. Mounting brackets 15 are symmetrically fixed on the left and right side walls of mounting base 3. Drive spline sleeves 16 are fitted onto each mounting bracket 15 via bearing hubs 17, and the two drive spline sleeves 16 are mated together via their respective bearing hubs 17, ensuring that the two drive spline sleeves 16 rotate in opposite directions. A spline shaft 18 passes through the transmission spline sleeve 14, and the spline shaft 18 is inserted into one of the sleeves. The drive spline sleeve 16 is located inside the drive spline sleeve 16, thereby realizing the transmission between the drive spline sleeve 16 and the transmission spline sleeve 14 through the spline shaft 18. A support guide rod 20 is fixedly installed on the inner wall of the mounting sleeve 13. A guide groove 21 is movably sleeved on the support guide rod 20. A guide groove 21 is opened on the transmission spline sleeve 14. A connecting rod 22 is fixedly installed on the spline shaft 18, and the connecting rod 22 passes through the guide groove 21 and is fixedly installed on the guide sleeve 23. A spring 24 is sleeved on the support guide rod 20, wherein one end of the spring 24 abuts against the inner wall of the mounting sleeve 13, and the other end of the spring 24 abuts against the guide sleeve 23.

[0031] When using this device, to take soil samples from the upper layer, the sampling cylinder 6 is directly fitted onto the limiting pin 8 on the connecting seat 7 via the limiting groove 9, thus installing the sampling cylinder 6 on the lifting seat 5. By pressing down on the sampling cylinder 6, it is inserted into the soil layer for sampling. When taking deep soil samples, a hole is first made in the upper soil layer, and then deep sampling is performed through this hole. At this time, the connecting sleeve 10 is installed on the connecting seat 7, and the sampling cylinder 6 is installed on the connecting sleeve 10, so that the sampling cylinder 6 is inserted into the hole for deep sampling. When pressing down on the sampling cylinder 6, the guide sleeve 23 is pushed, which drives the spline shaft 18 to slide into the transmission spline sleeve 14 through the connecting rod 22. Then, the mounting sleeve 13 is rotated to rotate the spline shaft 18 to align with the forward-rotating drive spline sleeve 16, and then the guide sleeve 23 is released. The spring 24 pushes the guide sleeve 23, causing the spline shaft 18 to insert into the forward drive spline sleeve 16. By reciprocatingly pressing the handle 19, the forward drive spline sleeve 16 is rotated unidirectionally through the bearing hub 17. This drives the transmission spline sleeve 14 to rotate forward through the spline shaft 18, which in turn drives the threaded rod 4 to rotate through the bevel gear set. The lifting guide rod 2 guides the lifting seat 5, and the threaded rod 4 pushes the lifting seat 5 downward, thus pushing the sampling cylinder 6 downward for sampling. When sampling is completed and the sampling cylinder 6 needs to be removed, the spline shaft 18 is adjusted to align with the reverse-rotating drive spline sleeve 16. This reverse-rotating drive spline sleeve 16 drives the threaded rod 4 to rotate in the opposite direction, which in turn moves the lifting seat 5 upward and pulls out the sampling cylinder 6.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] 1. This device is equipped with a lifting seat 5 that moves up and down driven by a threaded rod 4. A connecting seat 7 with a limit pin 8 is provided on the lifting seat 5. The sampling cylinder 6 with a limit groove 9 is connected to the limit pin 8 to realize the connection between the sampling cylinder 6 and the lifting seat 5. Alternatively, an extended connecting sleeve 10 can be added and the sampling cylinder 6 can be installed. Thus, the lifting seat 5 drives the sampling cylinder 6 to move, descend for sampling and rise for extraction.

[0034] 2. In this solution, a transmission spline sleeve 14 is set by a rotatable mounting sleeve 13, and two sets of drive spline sleeves 16 with opposite rotation directions are set on the mounting base 3 by a mounting bracket 15. The transmission spline sleeve 14 is connected to one of the drive spline sleeves 16 by a telescopic spline shaft 18, so that the unidirectional rotation of the drive threaded rod 4 is achieved by the bearing hub 17 on the drive spline sleeve 16, thereby realizing the lowering or raising movement of the lifting seat 5.

[0035] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A soil radioactive contamination vertical distribution stratified sampler, comprising a base (1), characterized in that, It also includes: The lifting guide rod (2) is fixedly mounted on the base (1); Mounting base (3), which is fixedly installed at the upper end of the lifting guide rod (2); The threaded rod (4) is screwed onto the mounting base (3) by a bearing and is arranged parallel to the lifting guide rod (2); The lifting seat (5) is threadedly fitted onto the threaded rod (4), and the lifting seat (5) is movably fitted onto the lifting guide rod (2); Sampling cylinder (6), there are several sampling cylinders (6) and they are set on the lower surface of the lifting seat (5). The lower end of the sampling cylinder (6) is movably inserted into the base (1).

2. The soil radioactive contamination vertical distribution stratified sampler according to claim 1, characterized in that: Several connecting seats (7) are fixedly provided on the lower surface of the mounting base (3). Limiting pins (8) are fixedly provided on the side wall of the connecting seat (7). The upper end of the sampling tube (6) is sleeved on the connecting seat (7). A limiting groove (9) is opened on the upper side of the sampling tube (6). The sampling tube (6) is sleeved on the limiting pin (8) through the limiting groove (9).

3. A soil radioactive contamination vertical distribution stratified sampler according to claim 2, characterized in that: The connecting seat (7) is fitted with a connecting sleeve (10), and a connecting groove (11) is provided on the upper port side of the connecting sleeve (10). The connecting sleeve (10) is fitted onto the limiting pin (8) through the connecting groove (11). A connecting pin (12) is fixedly provided at the lower end of the connecting sleeve (10). The sampling cylinder (6) is fitted onto the lower end of the connecting sleeve (10), and the sampling cylinder (6) is fitted onto the connecting pin (12) through the limiting groove (9).

4. A soil radioactive contamination vertical distribution stratified sampler according to claim 1, characterized in that: The mounting base (3) is provided with a mounting sleeve (13) by means of a bearing, and the mounting sleeve (13) is provided with a transmission spline sleeve (14) by means of a bearing. The transmission spline sleeve (14) and the upper end of the threaded rod (4) are connected by a bevel gear set.

5. A soil radioactive contamination vertical distribution stratified sampler according to claim 4, characterized in that: Two mounting brackets (15) are symmetrically fixed on the left and right side walls of the mounting base (3). A drive spline sleeve (16) is spun on the mounting bracket (15) through a bearing hub (17). A spline shaft (18) is inserted into the transmission spline sleeve (14), and the spline shaft (18) is inserted into one of the drive spline sleeves (16). A handle (19) is fixedly installed on the sleeve of the bearing hub (17).

6. A soil radioactive contamination vertical distribution stratified sampler according to claim 5, characterized in that: A support guide rod (20) is fixedly installed on the inner wall of the mounting sleeve (13), and the support guide rod (20) is parallel to the transmission spline sleeve (14). A guide groove (21) is opened on the transmission spline sleeve (14). A connecting rod (22) is fixedly installed on one end of the spline shaft (18) located in the guide groove (21). A guide sleeve (23) is sleeved on the support guide rod (20). The connecting rod (22) passes through the guide groove (21) and is fixedly installed on the guide sleeve (23). A spring (24) is sleeved on the support guide rod (20). One end of the spring (24) abuts against the inner wall of the mounting sleeve (13), and the other end of the spring (24) abuts against the end wall of the guide sleeve (23).

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