Sample preparation device for geotechnical test
By designing a sample preparation device for geotechnical testing, the problem of irregular side walls of soil samples caused by insufficient manual cutting accuracy is solved, and efficient and accurate soil sample preparation is achieved.
Patent Information
- Application Number
- CN202421657033.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-12
AI Technical Summary
In the prior art, when preparing soil samples, due to insufficient manual cutting accuracy, the side walls of the cylindrical soil samples are irregular.
A sample preparation device for geotechnical testing is designed, including two semi-cylindrical sleeves and plugs of the same size. Through the cooperation of the cutter and the limiting block, the soil sample remains in a regular shape during the cutting process.
The device can efficiently cut regular soil samples under the action of a cutter and a plug-in, reducing the frequency of manual operation and improving the accuracy and safety of sample preparation.
Smart Images
Figure CN222913275U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of geotechnical tests, and particularly relates to a device for preparing specimens for geotechnical tests. Background Art
[0002] In the field of geotechnical engineering, the preparation and testing of soil samples are crucial links in engineering design and construction. By testing various mechanical and physical properties of soil samples, engineers can accurately evaluate key parameters such as the bearing capacity, stability, and permeability of foundation soils. These data provide a scientific basis for engineering design and construction, thus ensuring the safety and reliability of the project.
[0003] When preparing soil samples, the following method is usually adopted: First, manually use a knife and a wire saw to cut off the outer layer of the soil sample to make its volume slightly smaller, and then place it on a soil cutting device. By manually rotating one side of the soil cutting device, the blade on the other side gradually cuts off the surface of the soil sample, and finally a cylindrical soil sample is obtained. Then, use a wire saw to cut off the excess parts at the top and bottom of the sleeve to obtain a prepared specimen.
[0004] However, during the preparation process using this method, due to insufficient cutting accuracy, the side walls of the cylindrical soil samples are often irregular. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a device for preparing specimens for geotechnical tests to solve the problem that the side walls of cylindrical soil samples are irregular due to insufficient manual cutting accuracy in the prior art when preparing soil samples as mentioned in the above background art.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A device for preparing specimens for geotechnical tests, including a first sleeve and a second sleeve. The first sleeve and the second sleeve are two semi-cylinders of the same size. Both the first sleeve and the second sleeve include an arc edge and a straight edge. The second sleeve can rotate around the first sleeve. When the straight edges of the first sleeve and the second sleeve are attached together, they can form a complete cylinder. A limiting cylinder concentric with the arc edge is fixed at the top of the first sleeve. The first sleeve is slidably provided with an inserting cylinder through the limiting cylinder. A number of limiting blocks distributed in an annular array are fixed on the outer side wall of the inserting cylinder. A plurality of positioning slots distributed in a linear array are opened on the limiting block farthest from the straight edge.
[0007] A limiting sleeve is fixed on one side of the top of the first sleeve close to the straight edge. A blocking block is slidably connected to the inner side wall of the limiting sleeve. One end of the blocking block away from the limiting sleeve is slidably inserted into the limiting cylinder, and the blocking block acts on the positioning slots.
[0008] In one embodiment, a fixing block is provided on one side of the top of the first sleeve. A limiting rod that is slidably inserted into the fixing block is fixed on the side of the blocking block away from the straight edge. A spring acting on the blocking block is sleeved on the side wall of the limiting rod.
[0009] In one embodiment, a pushing block acting on the blocking block is provided on one side of the top of the second sleeve close to the straight edge.
[0010] In one embodiment, a plurality of limiting card slots distributed in an annular array are formed on the inner wall of the limiting cylinder, and the positions of the limiting card slots correspond to the positions of the limiting blocks.
[0011] In one embodiment, a cut is formed on the side wall of the limiting cylinder away from the straight edge and penetrates the limiting cylinder, and one end of the blocking block away from the limiting sleeve is inserted into the cut.
[0012] In one embodiment, a supporting plate is fixed to the bottom of the cavity of the first sleeve, and a cutting knife is provided at a position close to the bottom on the inner side wall of the cavity of the second sleeve.
[0013] In one embodiment, a supporting block is fixed on the outer side wall of the first sleeve, a limiting belt is detachably clamped on the supporting block, and a matching block acting on the limiting belt is fixed on the outer side wall of the second sleeve.
[0014] Beneficial effects
[0015] The technical effects and advantages of this soil test sample preparation device:
[0016] When using this soil test sample preparation device to process the primary soil sample, insert the insertion cylinder into the limiting cylinder, and the primary soil sample enters the inner wall of the insertion cylinder to complete the preparation of the test soil sample. When this soil test sample preparation device is in use, the insertion cylinder can be used to cut the test soil sample under the action of the cutting knife and the insertion cylinder and store it in the insertion cylinder.
[0017] The insertion cylinder is inserted into the cavity formed by the first sleeve and the second sleeve, and the test soil sample can be cut. If during the insertion process of the insertion cylinder, due to the extrusion of the limiting block, the primary soil sample is deformed and the first sleeve and the second sleeve are separated, the blocking block will be stuck in the positioning card slot of the limiting block, preventing the insertion cylinder from continuing to be inserted downward. This soil test sample preparation device can stop sampling after the original properties of the primary soil sample in the first sleeve and the second sleeve are changed. Description of the drawings
[0018] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 It is a schematic structural diagram of a sample preparation device for local soil tests;
[0020] Figure 2 is Figure 1 a schematic structural diagram of the first sleeve and the second sleeve in
[0021] Figure 3 is Figure 1 a schematic structural diagram after the second sleeve rotates and adheres to the first sleeve in
[0022] Figure 4 is Figure 3 a schematic structural diagram of the second perspective;
[0023] Figure 5 is Figure 4 an enlarged view of part A in
[0024] Figure 6 is Figure 4 a schematic diagram of the stopper and its upper structure in
[0025] In the figure:
[0026] 101, first sleeve; 102, support plate; 103, support block; 104, limiting cylinder; 105, limiting groove; 106, notch;
[0027] 111, second sleeve; 112, cutter; 113, fitting block;
[0028] 121, limiting band; 122, limiting block;
[0029] 201, limiting sleeve; 202, fixing block; 203, pushing block;
[0030] 211, stopper; 212, limiting rod; 213, spring; 214, limiting ring;
[0031] 31, insertion cylinder; 32, limiting block; 321, positioning groove. Specific embodiments
[0032] In the following description, numerous specific details are given to provide a more thorough understanding of the present utility model. However, it will be apparent to those skilled in the art that the present utility model can be implemented without one or more of these details. To avoid confusion with the present utility model, some well-known technical features in the art are not described.
[0033] Unless otherwise indicated by a separately defined direction, the directions such as up, down, left, right, front, back, inside, and outside involved in this article are based on the up, down, left, right, front, back, inside, and outside directions in the figures shown in the present utility model. This is hereby explained together.
[0034] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., subject to actual needs.
[0035] Please refer to Figures 1 - 6 A sample preparation device for geotechnical tests as shown, which includes a first sleeve 101 and a second sleeve 111. The first sleeve 101 and the second sleeve 111 are two semi-cylinders of the same size. Both the first sleeve 101 and the second sleeve 111 include an arc edge and a straight edge. The second sleeve 111 can rotate around the first sleeve 101. When the straight edges of the first sleeve 101 and the second sleeve 111 are attached together, they can form a complete cylinder. The diameter of the inner wall of the cylinder formed by the first sleeve 101 and the second sleeve 111 matches the diameter of the primary soil sample (in this technical solution, the soil sample drilled by the core barrel is defined as the primary soil sample). The technical solution lies in designing a sample preparation device for geotechnical tests to prepare the primary soil sample into a soil sample for testing.
[0036] The inner walls of the first sleeve 101, the second sleeve 111, and the insertion cylinder 31 of this technical solution are all coated with vaseline to reduce the probability of the soil sample sticking to the first sleeve 101, the second sleeve 111, and the insertion cylinder 31.
[0037] When this sample preparation device for geotechnical tests is in use, it can reduce the frequency of manual use of wire saws and blades, and to a certain extent improve the safety of operators when making soil samples for testing.
[0038] In this embodiment, a support plate 102 is fixed at the bottom of the cavity of the first sleeve 101, and a cutter 112 is provided at a position near the bottom of the inner side wall of the cavity of the second sleeve 111. The cutter 112 is used to cut off the irregular bottom of the primary soil sample so that the bottom of the finally obtained soil sample for testing is flat.
[0039] A support block 103 is fixed on the outer side wall of the first sleeve 101. A limiting belt 121 is detachably clamped on the support block 103. A matching block 113 acting on the limiting belt 121 is fixed on the outer side wall of the second sleeve 111. A limiting block 122 is detachably inserted into the limiting belt 121.
[0040] As Figure 1 , Figure 2 shown, when it is necessary to prepare a test soil sample using the soil test sample preparation device, place the primary soil sample on the top of the support plate 102 of the first sleeve 101, and make the primary soil sample stuck in the first sleeve 101. Subsequently, rotate the second sleeve 111 around the first sleeve 101, and the cutting knife 112 cuts into the primary soil sample and cuts off the uneven bottom of the primary soil sample. As Figure 3 shown, when the second sleeve 111 rotates around the first sleeve 101, the limiting belt 121 is always stuck on the mating block 113, which can stabilize the position of the second sleeve 111. And after the second sleeve 111 is attached to the first sleeve 101, the limiting block 122 can be inserted into the limiting belt 121 to limit the position of the second sleeve 111 so that it will not rotate relative to the second sleeve 111.
[0041] In this embodiment, a limiting cylinder 104 concentric with the arc edge is fixed at the top of the first sleeve 101. The first sleeve 101 is slidably provided with an insertion cylinder 31 through the limiting cylinder 104. A number of limiting blocks 32 distributed in a circumferential array are fixed on the outer side wall of the insertion cylinder 31. A number of limiting slots 105 distributed in a circumferential array are formed on the inner wall of the limiting cylinder 104. The positions of the limiting slots 105 correspond to the positions of the limiting blocks 32.
[0042] As Figure 2 , Figure 5 shown, when the insertion cylinder 31 is inserted into the limiting cylinder 104, the insertion cylinder 31 can only slide in the axial direction and cannot rotate under the action of the limiting blocks 32 and the limiting slots 105.
[0043] In this embodiment, a limiting sleeve 201 is fixed on one side of the top of the first sleeve 101 close to the straight edge. A blocking block 211 is slidably connected to the inner side wall of the limiting sleeve 201. A plurality of positioning slots 321 distributed in a linear array are formed on the limiting block 32 farthest from the straight edge. The positioning slots 321 are close to the cut 106, which is convenient for the blocking block 211 to penetrate through the cut 106 and be inserted into the positioning slots 321 to limit the insertion cylinder 31 from being inserted into the primary soil sample. One end of the blocking block 211 away from the limiting sleeve 201 is slidably inserted into the limiting cylinder 104. The blocking block 211 acts on the positioning slots 321. A cut 106 penetrating the limiting cylinder 104 is formed on one side of the side wall of the limiting cylinder 104 away from the straight edge. One end of the blocking block 211 away from the limiting sleeve 201 is inserted into the cut 106.
[0044] As Figures 3 - 6 shown, when the second sleeve 111 rotates to be about to be attached to the first sleeve 101, the first sleeve 101 will move by driving the blocking block 211, so that the blocking block 211 no longer restricts the position of the insertion cylinder 31, and the insertion cylinder 31 can be inserted into the primary soil sample in the first sleeve 101 and the second sleeve 111.
[0045] In this embodiment, a fixing block 202 is provided on one side of the top of the first sleeve 101. A limiting rod 212 which is slidably inserted into the fixing block 202 is fixed on the side of the stop block 211 away from the straight edge. A spring 213 acting on the stop block 211 is sleeved on the side wall of the limiting rod 212. A push block 203 acting on the stop block 211 is provided on the side of the top of the second sleeve 111 close to the straight edge. A limiting ring 214 which is matched with the limiting sleeve 201 is fixed on the side wall of the stop block 211, so that the stop block 211 will not be inserted into the limiting cylinder 104 excessively.
[0046] As Figure 5 shown, when the second sleeve 111 rotates and is about to be attached to the first sleeve 101, the push block 203 at the top of the second sleeve 111 acts on the stop block 211, so that the stop block 211 moves out of the notch 106 of the limiting cylinder 104 and no longer restricts the position of the inserting cylinder 31.
[0047] If the limiting block 122 accidentally falls off during the process of inserting the inserting cylinder 31 into the primary soil sample, the properties of the primary soil sample will change due to being squeezed. At this time, the second sleeve 111 will be separated from the first sleeve 101. At this time, the push block 203 no longer acts on the stop block 211. Under the action of the spring 213, the stop block 211 will continue to be inserted into the notch 106 of the limiting cylinder 104 and into the positioning slot 321 of the limiting block 32 to restrict the position of the inserting cylinder 31 and stop sampling.
[0048] Working principle: When using this soil test sample preparation device to process the primary soil sample, after using the cutter 112 to cut off the uneven bottom of the primary soil sample, insert the inserting cylinder 31 into the limiting cylinder 104 and align the limiting block 32 with the limiting slot 105. During the insertion process of the inserting cylinder 31, insert the inserting cylinder 31 until it abuts against the top of the cutter 112 and stops inserting. The primary soil sample enters the inner wall of the inserting cylinder 31 to complete the preparation of the test soil sample.
[0049] When the second sleeve 111 is rotated and attached to the first sleeve 101, the push block 203 can push against the stop block 211 and move it away from the second sleeve 111, so that the stop block 211 moves out of the notch 106 of the limiting cylinder 104. The inserting cylinder 31 is inserted into the cavity formed by the first sleeve 101 and the second sleeve 111, and the test soil sample can be cut. If during the insertion process of the inserting cylinder 31, due to the extrusion of the limiting block 32, the primary soil sample deforms and the first sleeve 101 and the second sleeve 111 are separated. At this time, the push block 203 moves away from the first sleeve 101, and the stop block 211 moves away from the fixing block 202 under the action of the spring 213, and the stop block 211 will be stuck in the positioning slot 321 of the limiting block 32, so that the inserting cylinder 31 cannot continue to be inserted downward.
[0050] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A sample preparation device for geotechnical testing, comprising a first sleeve (101) and a second sleeve (111), wherein the first sleeve (101) and the second sleeve (111) are two semi-cylinders of the same size, wherein the first sleeve (101) and the second sleeve (111) both comprise arc edges and straight edges, wherein the second sleeve (111) can rotate around the first sleeve (101), and the straight edges of the first sleeve (101) and the second sleeve (111) can be attached together to form a complete cylinder, wherein: A limiting cylinder (104) concentric with the arc edge is fixed on the top of the first sleeve (101), an inserting cylinder (31) is slidably arranged on the first sleeve (101) through the limiting cylinder (104), a plurality of limiting blocks (32) distributed in a circular array are fixed on the outer side wall of the inserting cylinder (31), and a plurality of positioning slots (321) distributed in a linear array are provided on the limiting block (32) farthest from the straight edge; A limiting sleeve (201) is fixed to one side of the top of the first sleeve (101) close to the straight edge, and a stopper (211) is slidably connected to the inner wall of the limiting sleeve (201). An end of the stopper (211) away from the limiting sleeve (201) is slidably inserted into the limiting cylinder (104), and the stopper (211) acts on the positioning slot (321).
2. A geotechnical test sample preparation device according to claim 1, characterized in that: A fixed block (202) is arranged on one side of the top of the first sleeve (101), a limiting rod (212) slidably inserted in the fixed block (202) is fixed on the side of the stopper (211) away from the straight edge, and a spring (213) acting on the stopper (211) is sleeved on the side wall of the limiting rod (212).
3. A geotechnical test sample preparation device according to claim 1, characterized in that: A push block (203) acting on the stop block (211) is provided on one side of the top of the second sleeve (111) close to the straight edge.
4. A geotechnical test sample preparation device according to claim 1, characterized in that: The inner wall of the limiting cylinder (104) is provided with a plurality of limiting slots (105) distributed in a ring array, and the positions of the limiting slots (105) correspond to the positions of the limiting blocks (32).
5. The geotechnical test sample preparation device according to claim 1, characterized in that: A cutout (106) penetrating the limit tube (104) is provided on a side of the side wall of the limit tube (104) away from the straight edge, and an end of the stopper (211) away from the limit sleeve (201) is inserted into the cutout (106).
6. A geotechnical test sample preparation device according to any one of claims 1 to 5, characterized in that: A support plate (102) is fixed to the bottom of the cavity of the first sleeve (101), and a cutter (112) is provided on the inner side wall of the cavity of the second sleeve (111) near the bottom.
7. A geotechnical test sample preparation device according to claim 6, characterized in that: A supporting block (103) is fixed on the outer wall of the first sleeve (101), and a limiting belt (121) is detachably clamped on the supporting block (103); and a matching block (113) acting on the limiting belt (121) is fixed on the outer wall of the second sleeve (111).