Static pressure type geotechnical sample preparation device

Abstract

The utility model relates to the field of geotechnical samples, in particular to a static pressure type geotechnical sample preparation device, which comprises a bottom plate, a static pressure mechanism mounted at the upper end of the bottom plate, a loading mechanism mounted below the static pressure mechanism, and a clamping mechanism, by means of the technical scheme, before static pressure treatment is conducted on a soil sample in the soil sample carrier, the driving structure in the clamping mechanism drives other structures to conduct clamping treatment on the soil sample carrier, after the soil sample carrier is clamped, a vibration motor is started, and the soil sample carrier is clamped through sliding connection of a sliding plate and a bottom plate; after the vibration motor is started, the soil sample carrier clamped on the sliding plate can shake front and back, so that the internal gap of the soil sample carrier can be reduced, and the situation that the sliding plate cannot correspond to the position of the static pressure mechanism after stopping vibration can be avoided through the elasticity of the spring; and the structure in the device can be protected to a certain degree by matching with the rubber material of the buffer pad, and the device is prevented from being damaged due to frequent vibration and collision.

Description

Technical Field

[0001] The utility model relates to the field of geotechnical samples, in particular to a static pressure type geotechnical sample preparation device. Background Art

[0002] Geotechnical testing is to test the engineering properties of soil and obtain the physical, mechanical and other indicators of soil, so as to provide reliable parameters for engineering design and construction. When conducting geotechnical testing, the preparation of test soil samples is the first quality factor. According to the actual situation of the project, soil samples are divided into disturbed soil samples and original soil samples. The preparation methods of disturbed soil samples include the striking method, the compaction method and the compression method. When the compression method is used for sample preparation, a certain mass of soil sample is usually compacted into the soil mold by static pressure, just filling the mold and no soil sample is lost.

[0003] The existing patent publication number is CN215492735U, a static pressure geotechnical sample preparation device. During operation, this device divides the entire sample evenly into several parts, pours one of the parts into the sample press, adjusts the limiting ring to the limiting groove a at the highest position, and then turns the hand wheel to press down to compact it according to the sample requirements, and then pours the next sample, adjusts the position of the limiting ring downward to compact it, and repeats the above steps of pouring the sample, adjusting the limiting ring, and compacting to complete the preparation of the entire sample.

[0004] When this device is used for static pressure preparation of soil samples, after the soil samples are smoothed, due to the granularity of the soil samples, certain gaps are likely to appear in the soil samples inside the soil sample carrier. After the soil samples inside the carrier are compacted by static pressure, certain gaps are likely to appear inside the soil samples, which can easily affect subsequent testing of the soil samples and other subsequent preparations. Utility Model Content

[0005] The purpose of the utility model is to provide a static pressure geotechnical sample preparation device in order to solve the above problems.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A static pressure type geotechnical sample preparation device comprises a bottom plate, a static pressure mechanism for static pressure treatment of soil samples is installed at the upper end of the bottom plate, a loading mechanism is installed below the static pressure mechanism, and a clamping mechanism for clamping a carrier loaded with soil samples is also included, and the clamping mechanism is installed in the middle of the bottom plate;

[0008] The clamping mechanism comprises a sliding plate, which is slidably connected to the middle of the bottom plate, a vibration motor is installed inside the sliding plate, a spring is fixed to the rear end of the sliding plate, and a buffer pad is fixed to the end surface of the bottom plate close to the sliding plate.

[0009] Preferably: the rear end of the spring is fixed to the bottom plate, and the buffer pad is made of rubber.

[0010] Preferably: the clamping mechanism also includes two fixing bars, the two fixing bars are fixed to the upper end of the sliding plate, a bidirectional screw is rotatably connected between the two fixing bars, a driving device is connected to the coupling at the input end of the bidirectional screw, a limiting rod is arranged on the rear side of the bidirectional screw, and the limiting rod is fixed to the two fixing bars, and two clamping strips are arranged between the bidirectional screw and the limiting rod.

[0011] Preferably, the two clamping strips are threadedly connected to the bidirectional screw, and the two clamping strips are slidably connected to the limiting rod.

[0012] Preferably: the static pressure mechanism includes two triangular brackets, the triangular brackets are fixed to the upper end of the base plate, two limit plates are fixed between the two triangular brackets, a sliding bar is slidably connected between the two limit plates, a counterweight block is fixed to the lower end of the sliding bar, a pressure plate is fixed to the lower end of the counterweight block, a plurality of loading bars are bolted to the lower end of the pressure plate, and a plurality of sample pressing blocks are fixed to the lower end of the loading bar.

[0013] Preferably, a special-shaped groove is provided inside the sliding bar.

[0014] Preferably: the loading mechanism includes a loading plate, which is arranged in the middle of the upper end of the bottom plate, and the upper end surface of the loading plate is bolted with multiple disassembly strips, and the upper ends of the disassembly strips are fixed with multiple bases, an inner ring is placed in the middle of the base, and a guard ring is placed on the upper end of the base, and the lower end of the guard ring and the upper end of the base are both provided with grooves corresponding to the inner ring.

[0015] Preferably, the inner diameter of the guard ring is the same as the inner diameter of the inner ring, and the outer diameter of the guard ring is the same as the outer diameter of the base.

[0016] The beneficial effect is that before the device performs static pressure treatment on the soil sample in the soil sample carrier, it first drives other structures to clamp the soil sample carrier through the driving structure in the clamping mechanism. After the soil sample carrier is clamped, the vibration motor is started. Through the sliding connection between the sliding plate and the bottom plate, the vibration motor can make the soil sample carrier clamped on the sliding plate vibrate back and forth after starting. In this way, the gap inside the soil sample carrier can be reduced. The elasticity of the spring can prevent the sliding plate from failing to correspond to the position of the static pressure mechanism after stopping vibration. In combination with the rubber material of the buffer pad, the structure in the device can be protected to a certain extent, avoiding damage to the device due to frequent vibration and collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a static pressure geotechnical sample preparation device described in the utility model;

[0019] Figure 2 It is a structural schematic diagram of a clamping mechanism of a static pressure geotechnical sample preparation device described in the utility model;

[0020] Figure 3 It is a right sectional view of a clamping mechanism of a static pressure geotechnical sample preparation device described in the utility model;

[0021] Figure 4 It is a structural schematic diagram of a static pressure mechanism and an adjusting mechanism of a static pressure type geotechnical sample preparation device described in the utility model;

[0022] Figure 5 It is a right sectional view of a static pressure mechanism and an adjusting mechanism of a static pressure geotechnical sample preparation device described in the utility model;

[0023] Figure 6 It is a structural schematic diagram of a loading mechanism of a static pressure geotechnical sample preparation device described in the utility model;

[0024] Figure 7 It is a main sectional view of the loading mechanism part of the static pressure geotechnical sample preparation device described in the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Bottom plate; 2. Clamping mechanism; 21. Sliding plate; 22. Vibration motor; 23. Spring; 24. Buffer pad; 25. Fixing bar; 26. Bidirectional screw; 27. Driving motor; 28. Limit rod; 29. ​​Clamping bar; 3. Static pressure mechanism; 31. Triangular bracket; 32. Limit plate; 33. Sliding bar; 34. Counterweight; 35. Pressing plate; 36. Loading bar; 37. Sample pressing block; 4. Adjusting mechanism; 41. One-way screw; 42. Turning handle; 43. Sliding rack; 5. Loading mechanism; 51. Loading plate; 52. Disassembly bar; 53. Base; 54. Inner ring; 55. Guard ring. DETAILED DESCRIPTION

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships described in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] The present invention is further described below by way of embodiments in conjunction with the accompanying drawings.

[0030] like Figure 1-Figure 7 As shown, a static pressure type geotechnical sample preparation device includes a base plate 1, a static pressure mechanism 3 for static pressure treatment of soil samples is installed on the upper end of the base plate 1, an adjusting mechanism 4 is installed inside the static pressure mechanism 3, and also includes a clamping mechanism 2 for clamping a carrier loaded with soil samples, and the clamping mechanism 2 is installed in the middle of the base plate 1.

[0031] In this embodiment, the clamping mechanism 2 includes a sliding plate 21, which is slidably connected in the middle of the bottom plate 1, a vibration motor 22 is installed inside the sliding plate 21, a spring 23 is fixed to the rear end of the sliding plate 21, and the rear end of the spring 23 is fixed to the bottom plate 1, a buffer pad 24 is fixed to the end surface of the bottom plate 1 close to the sliding plate 21, and the buffer pad 24 is made of rubber. Two fixing bars 25 are fixed to the upper end of the sliding plate 21, and a bidirectional screw 26 is rotatably connected between the two fixing bars 25. The input end coupling of the bidirectional screw 26 is connected to a driving device, and the driving device is a driving motor 27. A limit rod 28 is set at the rear side of the bidirectional screw 26, and the limit rod 2 8 is fixed with two fixing bars 25, and two clamping bars 29 are arranged between the bidirectional screw 26 and the limiting rod 28, and the two clamping bars 29 are threadedly connected with the bidirectional screw 26, and the two clamping bars 29 are slidably connected with the limiting rod 28; through the threaded connection between the bidirectional screw 26 and the two clamping bars 29 and the slidably connected with the limiting rod 28, when the driving motor 27 is started, the two clamping bars 29 can clamp and fix the loading mechanism 5, and through the sliding connection between the sliding plate 21 and the bottom plate 1 and the elasticity of the spring 23, when the vibration motor 22 is started, the structure on the sliding plate 21 can vibrate without misalignment.

[0032] In this embodiment, the static pressure mechanism 3 includes two triangular brackets 31, the triangular brackets 31 are fixed on the upper end of the base plate 1, two limit plates 32 are fixed between the two triangular brackets 31, a sliding bar 33 is slidably connected between the two limit plates 32, a special-shaped groove is opened inside the sliding bar 33, a counterweight block 34 is fixed to the lower end of the sliding bar 33, a pressure plate 35 is fixed to the lower end of the counterweight block 34, a plurality of loading bars 36 are bolted to the lower end of the pressure plate 35, and a plurality of sample pressing blocks 37 are fixed to the lower end of the loading bar 36; through the sliding connection between the two limit plates 32 and the sliding bar 33, the sliding bar 33 can fall naturally due to the gravity of the sliding bar 33 itself and the gravity of the counterweight block 34 and the pressure plate 35, so that the plurality of sample pressing blocks 37 can statically press the soil samples in the device loading mechanism 5.

[0033] In this embodiment, the adjustment mechanism 4 includes a one-way screw 41, which is rotatably connected to the inside of the special-shaped groove of the sliding bar 33, a turning handle 42 is fixed to the upper end of the one-way screw 41, and a sliding frame 43 is threadedly connected to the outer periphery of the one-way screw 41, and the sliding frame 43 is slidably connected to the sliding bar 33; through the rotational connection between the one-way screw 41 and the sliding bar 33, and then through the threaded connection between the one-way screw 41 and the sliding frame 43, and the sliding frame 43 is slidably connected to the sliding bar 33, the height position of the sliding frame 43 on the sliding bar 33 can be adjusted by rotating the turning handle 42, so that the descendable position of the sliding bar 33 can be suitable for the soil sample bearing capacity.

[0034] In this embodiment, the loading mechanism 5 includes a loading plate 51, which is arranged in the middle of the upper end of the bottom plate 1. A plurality of disassembly bars 52 are bolted to the upper end surface of the loading plate 51. A plurality of bases 53 are fixed to the upper ends of the disassembly bars 52. An inner ring 54 is placed in the middle of the base 53. A guard ring 55 is placed on the upper end of the base 53. A groove is provided at the lower end of the guard ring 55 and the upper end of the base 53 corresponding to the inner ring 54. The inner ring diameter of the guard ring 55 is the same as the inner ring diameter of the inner ring 54. The outer ring diameter of the guard ring 55 is the same as the outer ring diameter of the base 53. The number of loading bars 36 and the disassembly bars 52 are the same and the positions are the same. The number of sample pressing blocks 37 and the position of the base 53 are the same; the prepared quantitative soil sample is poured into the inner ring 54, and then the soil sample in the inner ring 54 is statically pressed by the static pressure mechanism 3. The sample pressing blocks 37 in the static pressure mechanism 3 and the loading structure composed of the base 53, the inner ring 54, and the guard ring 55 are provided in plurality, so that the device can realize batch sample preparation, and the loading bar 36 is fixed to the pressure plate 35 by bolts, and the disassembly bar 52 is fixed to the loading plate 51 by bolts, so that the device can also disassemble part of the structure as needed to realize small amount of sample preparation, so that the preparation of the device is more flexible.

[0035] Working principle: When the device performs static pressure treatment on the soil sample, the prepared soil sample is first poured quantitatively into the multiple inner rings 54, and then the loading plate 51 is placed between the two clamping strips 29. Through the sliding connection between the clamping strip 29 and the limit rod 28 and the threaded connection between the clamping strip 29 and the bidirectional screw 26, when the driving motor 27 is started, the two clamping strips 29 can be moved in relative directions, so that the two clamping strips 29 clamp the soil sample carrier. After the loading plate 51 is clamped, the vibration motor 22 is started. Through the sliding connection between the sliding plate 21 and the bottom plate 1 and the elasticity of the spring 23, when the vibration motor 22 is started The sliding plate 21 can drive the clamped loading plate 51 to vibrate slightly, so that the gap inside the soil sample in the inner ring 54 is smaller, avoiding the subsequent situation affected by the excessive gap inside the soil sample. After the preparation work is completed, turn the handle 42, through the threaded connection between the one-way screw 41 and the sliding frame 43 and the sliding connection between the sliding frame 43 and the sliding bar 33, when the one-way screw 41 is rotated, the position of the sliding frame 43 can be adjusted, so that the degree to which the sliding bar 33 can be lowered can be adjusted. After the adjustment is completed, the counterweight block 34 drives the pressure plate 35 and the sliding bar 33 to descend to perform static pressure treatment on the soil sample in the soil sample carrier.

[0036] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A static pressure type geotechnical sample preparation device, comprising a base plate (1), a static pressure mechanism (3) for static pressure treatment of soil samples is installed on the upper end of the base plate (1), and a loading mechanism (5) is installed below the static pressure mechanism (3), characterized in that: It also includes a clamping mechanism (2) for clamping a carrier loaded with soil samples, wherein the clamping mechanism (2) is installed in the middle of the base plate (1); The clamping mechanism (2) comprises a sliding plate (21), the sliding plate (21) being slidably connected in the middle of the base plate (1), a vibration motor (22) being installed inside the sliding plate (21), a spring (23) being fixed at the rear end of the sliding plate (21), and a buffer pad (24) being fixed to the end surface of the base plate (1) close to the sliding plate (21).

2. The static pressure geotechnical sample preparation device according to claim 1, characterized in that: The rear end of the spring (23) is fixed to the bottom plate (1), and the buffer pad (24) is made of rubber.

3. The static pressure geotechnical sample preparation device according to claim 1, characterized in that: The clamping mechanism (2) further comprises two fixing bars (25), the two fixing bars (25) being fixed to the upper end of the sliding plate (21), a bidirectional screw rod (26) being rotatably connected between the two fixing bars (25), a coupling at the input end of the bidirectional screw rod (26) being connected to a driving device, a limiting rod (28) being arranged at the rear side of the bidirectional screw rod (26), and the limiting rod (28) being fixed to the two fixing bars (25), and two clamping bars (29) being arranged between the bidirectional screw rod (26) and the limiting rod (28).

4. The static pressure geotechnical sample preparation device according to claim 3, characterized in that: The two clamping strips (29) are threadedly connected to the bidirectional screw rod (26), and the two clamping strips (29) are slidably connected to the limiting rod (28).

5. The static pressure geotechnical sample preparation device according to claim 1, characterized in that: The static pressure mechanism (3) comprises two triangular brackets (31), the triangular brackets (31) being fixed to the upper end of the bottom plate (1), two limit plates (32) being fixed between the two triangular brackets (31), a sliding bar (33) being slidably connected between the two limit plates (32), a counterweight block (34) being fixed at the lower end of the sliding bar (33), a pressing plate (35) being fixed at the lower end of the counterweight block (34), a plurality of loading bars (36) being bolted to the lower end of the pressing plate (35), and a plurality of sample pressing blocks (37) being fixed at the lower end of the loading bar (36).

6. The static pressure geotechnical sample preparation device according to claim 5, characterized in that: A special-shaped groove is provided inside the sliding bar (33).

7. The static pressure geotechnical sample preparation device according to claim 1, characterized in that: The loading mechanism (5) comprises a loading plate (51), the loading plate (51) being arranged in the middle of the upper end of the bottom plate (1), a plurality of disassembly strips (52) being bolted to the upper end surface of the loading plate (51), a plurality of bases (53) being fixed to the upper ends of the disassembly strips (52), an inner ring (54) being arranged in the middle of the base (53), a guard ring (55) being arranged at the upper end of the base (53), and a groove being provided at the lower end of the guard ring (55) and the upper end of the base (53) corresponding to the inner ring (54).

8. The static pressure geotechnical sample preparation device according to claim 7, characterized in that: The inner diameter of the guard ring (55) is the same as the inner diameter of the inner ring (54), and the outer diameter of the guard ring (55) is the same as the outer diameter of the base (53).

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