Sampling structure for detecting compaction degree by cutting ring method
By designing a sampling structure for ring tool compaction detection, the soil is cut using rotating cylinders and cutting teeth, the problem of soil depression when ring tool is pulled out is solved, the sampling success rate and efficiency are improved, and labor intensity and manufacturing cost are reduced.
Patent Information
- Application Number
- CN202420923836.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When the existing ring tool compaction detection method is used to remove the ring tool, the soil at the bottom of the ring tool is easily depressed due to the friction resistance of the soil, resulting in sampling failure. At the same time, the base of the sampling mechanism covers a large area and has high labor intensity.
A sampling structure for testing the compaction degree of the ring blade method is designed. The rotating cylinder and cutting teeth are used to cut the soil around the mounting cylinder to form a cavity, which facilitates auxiliary tools to cut the soil, avoids soil depression when the ring blade is pulled out, and ensures accurate sampling through the coordination of the guide column and the rotation shaft.
It improves the sampling success rate, reduces labor intensity, reduces manufacturing costs, ensures the integrity of the soil in the ring tool, and improves the sampling efficiency and accuracy.
Smart Images
Figure CN222545020U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of compaction degree detection by a ring knife method, and in particular relates to a sampling structure used for compaction degree detection by a ring knife method. Background Art
[0002] The compaction test method of the knife ring method is a test method for measuring the density of soil or pavement materials. It is mainly used to test the compaction of soil base and pavement materials. The main steps include: (1) Preparation: It is necessary to prepare a knife ring, a ring cover and a hammer tool. The knife ring is a rigid box of a specific size and shape used to cut soil samples. The ring cover is used to seal the top of the knife ring to prevent the sample from drying out during the test. (2) Sample collection: Insert the knife ring vertically into the soil, use a hammer to drive the knife ring into the soil until the ring cover is flush with the ground, and then use a hammer to dig out the soil containing the knife ring and the sample. (3) Sample processing: Remove the ring cover, use a drawing knife to cut off the excess soil at both ends of the knife ring until it is flat; use a balance to weigh the total mass of the knife ring and the test. (4) Moisture content determination: Take a representative sample from the knife ring and determine its moisture content. (5) Density and compaction calculation: Calculate the dry density based on the measured wet density and moisture content; obtain the compaction by setting the dry density to the maximum dry density.
[0003] Combined with Figure 1 , attached Figure 1 1A in the figure is the structural diagram of ring knife 01, Figure 1 1B in FIG. 1 is a schematic diagram of the structure of the ring cover 02. Figure 2 , a schematic diagram of the structure in which the ring cover 02 covers the ring cutter 01. When taking soil, a hammer tool is used to hammer the top of the ring cover 02, and the ring cover 02 drives the ring cutter 01 to enter the soil body to take soil.
[0004] In actual use, since the method of using a hammer tool to press the ring cutter into the soil will cause the ring cutter to tilt, the structure has been improved on the market, such as using a mechanical structure to press the ring cutter in to ensure the verticality of the ring cutter. For example, the patent with application number 2021202992191 discloses an original soil ring cutter type soil drilling drill, including a handle, a drill rod, and a drill bit assembly. The handle is installed at the upper end of the drill rod, and the drill bit assembly is installed at the lower end. The drill bit assembly includes a drill bit body, a ring cutter placement door and a movable ring cutter; the upper half of the drill bit body is a straight cylindrical structure, and the lower half is a conical cylindrical structure; two ring cutter placement openings are opened in the upper half of the drill bit body, and are symmetrical along the axis of the drill bit body; the ring cutter placement door completely covers the ring cutter placement opening; the movable ring cutter is installed in the drill bit body by opening one side of the ring cutter placement door; the movable ring cutter is pushed out of the drill bit body by opening the ring cutter placement doors on both sides.
[0005] As the prior art exemplified above, the current knife ring sampling mechanism can achieve sampling and reduce the labor intensity of the staff and can improve the verticality of the knife ring pressed into the soil to a certain extent. However, when the knife ring is taken out from the soil, it is pulled out. However, due to the friction of the soil itself, the soil at the bottom of the knife ring will have cross-sections and depressions, resulting in sampling failure. The base of some sampling mechanisms occupies a large ground area. After the sampling is completed, the sampling is manually dug out, which increases the labor intensity and affects the efficiency of knife ring sampling. Utility Model Content
[0006] In order to solve the problem that the method of directly pulling out the ring knife in the existing detection structure will cause the soil at the bottom of the ring knife to sink and thus fail to take samples, the utility model provides a sampling structure for compaction detection using the ring knife method, thereby avoiding the problem of soil sinking at the bottom of the ring knife caused by directly pulling out the ring knife, thereby improving the success rate of sampling for detection; at the same time, the utility model also makes it easy to take out the ring knife from the soil.
[0007] In order to solve the technical problem, the technical solution adopted by the utility model is:
[0008] A sampling structure for compaction detection using a ring knife method, characterized by comprising:
[0009] A base, used to be placed on the ground as a support for the entire detection structure, and a through hole is opened on the base;
[0010] A support column, wherein the support column is installed on one side of the base;
[0011] A handle, one end of which is hinged to the top of the support column, and the other end of which is a free end. A connecting rod is hinged to the side of the handle close to the support column, and a guide column is hinged below the connecting rod;
[0012] The mounting block is located below the handle and fixedly mounted on the support column. The mounting block has a central hole that matches the guide column, and the guide column can slide up and down in the central hole. A rotating shaft is rotatably connected below the guide column, and the lower end of the rotating shaft extends out of the mounting block and can rotate in the central hole.
[0013] The upper end of the rotating cylinder is fixedly connected to the rotating shaft and can rotate with the rotating shaft. The rotating cylinder is sleeved with a mounting cylinder for mounting a ring cutter, and the lower end of the rotating cylinder is mounted with a plurality of cutting teeth.
[0014] In some embodiments, a blind hole is opened in the middle of the rotating cylinder, an end cover is installed on the inner wall of the lower end of the blind hole, the middle of the end cover has a through hole for the installation cylinder to pass through, the top of the installation cylinder has a limit platform, the outer circumferential wall of the limit platform cooperates with the inner wall of the blind hole and can rotate and slide up and down in the blind hole, and the limit platform is limited by the end cover.
[0015] In some embodiments, a driving motor for driving the rotating shaft to rotate is installed on the mounting block or the support column, and a driving gear is installed on the output shaft of the driving motor. At least a portion of the upper section of the rotating shaft is in contact with the inner wall of the center hole and is used to be rotatably connected to the guide column. A long strip of gear ring is provided on the outer circumferential wall of the lower section of the rotating shaft, and the gear ring is meshed with the driving gear.
[0016] In some embodiments, the lower end of the inner wall of the center hole is threadedly connected with an adjustment limit cylinder, and the middle of the adjustment limit cylinder is provided with a through hole for the lower section of the rotating shaft to pass through.
[0017] In some embodiments, the top of the rotating shaft has a boss, and the boss fits with the inner wall of the center hole.
[0018] In some embodiments, a protective cover is provided below the mounting block to protect the rotating shaft extending out of the mounting block.
[0019] In some embodiments, the protective cover is rotatably connected to the mounting block, or the protective cover is rotatably connected to the rotating drum.
[0020] In some embodiments, levels are arranged on the base along two different directions respectively.
[0021] Compared with the prior art, the utility model has the following beneficial effects:
[0022] The utility model utilizes the cutting teeth at the lower part of the rotating cylinder to cut the soil at the periphery of the installation cylinder, thereby forming a cavity at the periphery of the installation cylinder, which makes it convenient to directly use auxiliary tools to cut the soil at the top of the installation cylinder, and avoids the situation where the soil at the bottom of the ring cutter is sunken due to the direct pulling out of the ring cutter, thereby ensuring the integrity of the soil in the ring cutter.
[0023] During use, the utility model cuts the soil outside the installation cylinder by extrusion and rotation cutting, and has the characteristics of high cutting efficiency. After the surrounding soil is cut off, the installation cylinder for installing the ring knife is exposed, so that it is convenient to cut the soil at the bottom of the installation cylinder, and has the characteristics of convenient operation. Compared with the existing structure, it still needs to dig out the surrounding soil, which has the characteristics of high sampling efficiency and greatly reduces the labor intensity.
[0024] The utility model utilizes the cooperation between the guide column and the central hole of the mounting block to ensure the verticality of the rotating shaft (and the rotating cylinder below the rotating shaft), thereby ensuring the accuracy of sampling.
[0025] The utility model utilizes the structural design of the adjustment limit cylinder to limit the position of the guide column and the shaft, so as to adjust the depth of the ring cutter extending into the soil according to the actual situation. It has the characteristics of precise control, simple and reliable structure, and can be applied to sampling requirements at different depths. In the prior art, the method of driving the lead screw to rotate by a motor, and then driving the lead screw nut to move up and down to drive the ring cutter to move up and down, requires very high control accuracy of the motor if accuracy needs to be guaranteed, which leads to high manufacturing cost. Therefore, compared with the existing structure, the utility model also has the advantage of low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 Schematic diagram of the structure of the ring cutter and the ring cover; Figure 1 1A in the figure is a schematic diagram of the structure of the ring cutter, where Figure 1 1B is a schematic diagram of the structure of the ring cover;
[0027] Figure 2 It is a schematic diagram of the structure when the ring cover is covered on the ring cutter;
[0028] Figure 3 This is a schematic diagram of the structure of an embodiment of the utility model;
[0029] Figure 4 It is a structural schematic diagram of the installation tube of the utility model;
[0030] Markings in the figure: 01, ring knife, 02, ring cover, 1, base, 101, through hole, 2, support column, 3, handle, 4, mounting block, 41, center hole, 42, adjustment limit cylinder, 5, connecting rod, 6, guide column, 7, rotating shaft, 71, gear ring, 8, driving motor, 9, driving gear, 10, rotating cylinder, 1001, cutting teeth, 1002, blind hole, 11, mounting cylinder, 1101, limit platform, 1102, upper through hole, 1103, lower through hole, 1104, strip seam, 12, end cover, 13, level. DETAILED DESCRIPTION
[0031] The present invention is further described below in conjunction with the embodiments, which are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in the field without creative work are all within the protection scope of the present invention.
[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0033] In conjunction with the accompanying drawings, the sampling structure for ring knife method compaction detection of the utility model includes:
[0034] The base 1 is placed on the ground as a support for the entire detection structure. A through hole 101 is provided on the base 1 , wherein the through hole 101 is used for the rotating cylinder 10 to pass through. Therefore, the size of the through hole 101 is larger than the outer diameter of the rotating cylinder 10 .
[0035] A support column 2 is installed on one side of the base 1 .
[0036] A handle 3, one end of which is hinged to the top of a support column 2, and the other end of which is a free end. A connecting rod 5 is hinged to the side of the handle 1 close to the support column 2, and a guide column 6 is hinged below the connecting rod 5.
[0037] The mounting block 4 is located below the handle 3 and is fixedly mounted on the support column 2. The mounting block 3 has a center hole 41 that is compatible with the guide column 6, and the guide column 6 can slide up and down in the center hole 41; a rotating shaft 7 is also rotatably connected below the guide column 6, and the lower end of the rotating shaft 7 extends out of the mounting block 4 and can rotate in the center hole 41; in the specific implementation process, lubricating grease is coated between the rotating shaft 7 and the guide column 6 and the center hole 41 to reduce the friction resistance between the guide column 6, the rotating shaft 7 and the center hole 41, and reduce wear.
[0038] The rotating cylinder 10 has its upper end fixedly connected to the rotating shaft 7 and can rotate along with the rotating shaft 10 . A mounting cylinder 11 for mounting the ring cutter 01 is sleeved inside the rotating cylinder 10 . A plurality of cutting teeth 1001 are mounted on the lower end of the rotating cylinder 10 .
[0039] During the use of the detection structure of the utility model, when it is necessary to sample the soil, the installation tube extends downward from the rotating tube under the action of gravity, so that the ring knife is installed in the installation tube, which improves the convenience of the ring knife installation. One end of the hand-pressed handle is used to squeeze the connecting rod by the lever principle to drive the guide column to move up and down in the installation, thereby driving the rotating shaft and the rotating tube to move downward, so as to squeeze the ring knife into the soil for sampling. At the same time, the driving motor rotates to drive the rotating shaft to rotate, so as to use the cutting teeth at the lower end of the rotating tube to cut the soil outside the installation tube, so as to cut off the soil outside the installation tube. During the rotation of the rotating tube, due to the rotation connection between the installation tube and the rotating tube, and the installation tube will not rotate under the action of the soil resistance. When the ring cutter is pressed into the set position, slowly lift the arm upwards until the installation cylinder (and the ring cutter installed in the installation cylinder) extend out of the rotating cylinder again under the action of gravity, thereby forming a cavity on the periphery of the installation cylinder and exposing the installation cylinder, and then use auxiliary tools (such as a shovel) to cut the soil from the bottom of the installation cylinder, and then lift the handle upwards again to remove the ring cutter from the installation cylinder.
[0040] The utility model utilizes the cutting teeth at the lower part of the rotating cylinder to cut the soil at the periphery of the installation cylinder, thereby forming a cavity at the periphery of the installation cylinder, which makes it convenient to directly use auxiliary tools to cut the soil at the top of the installation cylinder, and avoids the situation where the soil at the bottom of the ring cutter is sunken due to the direct pulling out of the ring cutter, thereby ensuring the integrity of the soil in the ring cutter.
[0041] During use, the utility model cuts the soil outside the installation cylinder by extrusion and rotation cutting, and has the characteristics of high cutting efficiency. After the surrounding soil is cut off, the installation cylinder for installing the ring knife is exposed, so that it is convenient to cut the soil at the bottom of the installation cylinder, and has the characteristics of convenient operation. Compared with the existing structure, it still needs to dig out the surrounding soil, which has the characteristics of high sampling efficiency and greatly reduces the labor intensity.
[0042] The utility model utilizes the cooperation between the guide column and the central hole of the mounting block to ensure the verticality of the rotating shaft (and the rotating cylinder below the rotating shaft), thereby ensuring the accuracy of sampling.
[0043] In some embodiments, a blind hole 1002 is provided in the middle of the rotating cylinder 10, an end cap 12 is installed on the inner wall of the lower end of the blind hole 1002, the middle of the end cap 12 has a through hole for the installation cylinder 11 to pass through, and the top of the installation cylinder 11 has a limit platform 1101, the outer circumferential wall of the limit platform 1101 cooperates with the inner wall of the blind hole 1002 and can rotate and slide up and down in the blind hole 1002, and the limit platform 1101 is limited by the end cap 12. As a preferred mode of the utility model, the lower end surface of the end cap 10 is also installed with cutting teeth 1001 to facilitate cutting of the soil outside the installation cylinder 11.
[0044] During the use of the utility model, in order to ensure that the ring cutter in the installation tube can first contact the soil, when the installation tube 11 moves to the top in the blind hole 1002, the bottom end of the ring cutter 01 should be slightly lower than the bottom of the cutting teeth 1001. The travel of the installation tube 11 in the blind hole 1002 is determined by the distance between the top surface of the end cover 12 and the inner top of the blind hole. Therefore, in the actual operation process, the staff can flexibly adjust according to the size of the ring cutter, so as to be suitable for the use of ring cutters 01 of different sizes.
[0045] When the installation tube 11 moves to the top in the blind hole 1002, the lower end of the ring cutter 01 should be slightly lower than the lower end of the cutting tooth 1001, so that the ring cutter 01 first contacts the soil, and then the cutting tooth 1001 cuts the soil, preventing the cutting tooth 1001 from cutting the soil first and damaging the soil at the corresponding position of the ring cutter 01.
[0046] Among them, the function of the installation cylinder 11 is to place the ring cutter, therefore, a plurality of strip-shaped slits 1104 are provided on the circumferential wall of the installation cylinder 11, and the ring cutter 01 can be directly clamped in the installation cylinder. In the specific implementation process, an upper through hole 1102 and a lower through hole 1103 are provided in the middle of the installation cylinder 11, and the upper through hole 1102 and the lower through hole 1103 are interconnected and form a step surface, and the inner diameter of the upper through hole 1102 is smaller than the size of the lower through hole 1103, so that the ring cutter is clamped in the lower through hole 1103. When the ring cutter 01 needs to be taken out from the installation cylinder, the ring cutter 01 in the lower through hole 1103 can be directly squeezed from the upper through hole 1102.
[0047] In some embodiments, a driving motor 8 for driving the rotating shaft 7 to rotate is installed on the mounting block 4 or the supporting column 2, and a driving gear 9 is installed on the output shaft of the driving motor 8. At least a portion of the upper section of the rotating shaft 7 is in contact with the inner wall of the center hole 41 and is used to be rotatably connected with the guide column 6. A long strip of toothed ring 71 is provided on the outer circumferential wall of the lower section of the rotating shaft 7. The toothed ring 71 is meshed with the driving gear 9, so that the driving motor can be used to drive the rotating shaft 7 to rotate, thereby driving the cutting teeth 1001 on the rotating cylinder 10 to rotate.
[0048] The strip-shaped ring gear 71 is arranged along the length direction of the rotating shaft 7 to ensure that the driving gear 9 maintains contact with the ring gear 71 when the rotating shaft 7 moves downward.
[0049] In some embodiments, the lower end of the inner wall of the center hole 71 is threadedly connected with an adjustment limit cylinder 42, and the middle part of the adjustment limit cylinder 42 is provided with a through hole for the lower section of the rotating shaft 7 to pass through. The utility model utilizes the structural design of the adjustment limit cylinder to limit the position of the guide column and the rotating shaft to be lowered, so as to adjust the depth of the ring knife extending into the soil according to the actual situation. It has the characteristics of precise control, simple and reliable structure, and can be suitable for sampling requirements at different depths. In the prior art, the method of driving the lead screw to rotate by a motor, and then driving the lead screw nut to move up and down to drive the ring knife to move up and down, if accuracy needs to be guaranteed, the control accuracy of the motor is very high, which leads to high manufacturing cost. Therefore, compared with the existing structure, the utility model also has the advantage of low manufacturing cost.
[0050] In some embodiments, the top of the rotating shaft 7 has a boss, and the boss fits with the inner wall of the center hole 41 .
[0051] In some embodiments, a protective cover is provided below the mounting block 4 to protect the rotating shaft 7 extending out of the mounting block. In the specific implementation process, the protective cover can be made of a bellows. The upper end of the bellows is fixed to the lower end of the mounting block, and the lower end of the bellows is used to contact the top of the rotating cylinder (but the lower end of the bellows is not connected to the rotating cylinder, so that the bellows will not affect the movement of the rotating cylinder), so as to protect the rotating shaft to a certain extent. At the same time, the bellows can also be extended to a certain extent to meet the requirements of the rotating cylinder moving up and down along the mounting block; at the same time, when the bellows is lifted up, the gear ring and the active processing can be exposed, which is convenient for applying lubricating grease to the gear ring and the active gear.
[0052] In some embodiments, the protective cover is rotatably connected to the mounting block, or the protective cover is rotatably connected to the rotating cylinder. When the protective cover is rotatably connected to the mounting block, the lower end of the protective cover is fixedly connected to the rotating cylinder, so that the protective cover can move with the rotating cylinder, and the retractability of the bellows is used to meet the requirement of the rotating cylinder moving up and down relative to the mounting block. When the protective cover is rotatably connected to the rotating cylinder, the upper end of the protective cover is fixedly connected to the mounting. That is to say, in order to meet the requirement of the rotating cylinder moving up and down relative to the mounting block, the protective cover is retractable. In the specific implementation process, a bellows can be selected, which has the advantages of low cost, good durability and easy replacement.
[0053] In some embodiments, the base 1 is provided with a level 13 in two different directions, so that the placement position of the base 1 can be adjusted by using the level 13 to ensure that the base 13 is placed horizontally. Preferably, the directions in which the two levels 13 are arranged on the horizontal plane are perpendicular to each other, so that the two levels 13 can be used to observe whether the base 1 is placed horizontally.
Claims
1. A sampling structure for compaction detection by ring knife method, characterized in that: include: A base (1) is used to be placed on the ground to serve as a support for the entire detection structure, and a through hole (101) is formed on the base (1); A support column (2), wherein the support column (2) is installed on one side of the base (1); A handle (3), one end of the handle (3) is hinged to the top of the support column (2), the other end of the handle (3) is a free end, a connecting rod (5) is hinged to the side of the handle (3) close to the support column (2), and a guide column (6) is hinged below the connecting rod (5); A mounting block (4) is located below the handle (3) and fixedly mounted on the support column (2); the mounting block (4) has a central hole (41) adapted to the guide column (6); the guide column (6) can slide up and down in the central hole (41); a rotating shaft (7) is rotatably connected below the guide column (6); the lower end of the rotating shaft (7) extends out of the mounting block (4) and can rotate in the central hole (41); A rotating cylinder (10), the upper end of which is fixedly connected to a rotating shaft (7) and can rotate along with the rotating shaft (7), a mounting cylinder (11) for mounting a ring cutter is sleeved inside the rotating cylinder (10), and a plurality of cutting teeth (1001) are mounted on the lower end of the rotating cylinder (10).
2. The sampling structure for compaction detection by the ring knife method according to claim 1 is characterized in that: A blind hole (1002) is provided in the middle of the rotating cylinder (10); an end cover (12) is installed on the inner wall of the lower end of the blind hole (1002); a through hole is provided in the middle of the end cover (12) for the installation cylinder (11) to pass through; a limiting platform (1101) is provided on the top of the installation cylinder (11); an outer circumferential wall of the limiting platform (1101) cooperates with the inner wall of the blind hole (1002) and can rotate and slide up and down in the blind hole; the limiting platform (1101) is limited by the end cover (12).
3. The sampling structure for compaction detection by the ring knife method according to claim 2 is characterized in that: A driving motor (8) for driving the rotating shaft (7) to rotate is installed on the mounting block (4) or the supporting column (2), and a driving gear (9) is installed on the output shaft of the driving motor (8). At least a part of the upper section of the rotating shaft (7) is in contact with the inner wall of the center hole (41) and is used to be rotatably connected with the guide column (6). A strip-shaped toothed ring (71) is provided on the outer circumferential wall of the lower section of the rotating shaft (7), and the toothed ring (71) is meshed with the driving gear (9).
4. The sampling structure for compaction detection by ring knife method according to any one of claims 1 to 3, characterized in that: The lower end of the inner wall of the central hole (41) is threadedly connected with an adjustment limit cylinder (42), and a through hole for the lower section of the rotating shaft (7) to pass through is opened in the middle of the adjustment limit cylinder (42).
5. The sampling structure for compaction detection by the ring knife method according to claim 4 is characterized in that: The top of the rotating shaft (7) is provided with a boss, and the boss fits with the inner wall of the central hole (41).
6. The sampling structure for compaction detection by the ring knife method according to claim 1 is characterized in that: A protective cover is sleeved below the mounting block (4) and is used to protect the rotating shaft (7) extending out of the mounting block (4).
7. The sampling structure for compaction detection by the ring knife method according to claim 6 is characterized in that: The protective cover is rotatably connected to the mounting block, or the protective cover is rotatably connected to the rotating drum.
8. The sampling structure for compaction detection by the ring knife method according to claim 1 is characterized in that: Level meters (13) are arranged on the base (1) along two different directions respectively.