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CN-224216455-U - Coarse-grained soil compression coefficient detection device

CN224216455UCN 224216455 UCN224216455 UCN 224216455UCN-224216455-U

Abstract

The application relates to the technical field of hydraulic engineering investigation, in particular to a coarse-grained soil compression coefficient detection device which comprises a base, an oil cylinder, a seat plate, a reaction frame, a test cylinder and a conveying assembly, wherein the oil cylinder is arranged on the base, a piston rod of the oil cylinder is connected with the seat plate, a first cavity is formed in the base, the seat plate is used for placing the test cylinder, the reaction frame is arranged on the base, the seat plate is opposite to the reaction frame, the conveying assembly comprises a frame support, two guide rails and a plurality of pulleys, the guide rails are arranged on the top wall of the base, the two guide rails are arranged in parallel, the guide rails are arranged along the length direction of the base, the pulleys are arranged on the bottom wall of the support, the test cylinder is arranged on the frame support, the test cylinder is used for placing a soil sample, a second cavity is formed in the frame support, and the test cylinder moving along the length direction of the guide rails is used for conveniently realizing the test of soil samples with different sizes and characteristics, so that the replacement of equipment in different working conditions is avoided, and the detection efficiency of coarse-grained soil compression coefficients is improved.

Inventors

  • ZHANG RUI
  • MAO JIAWEI
  • CHEN JIANGUO
  • MA LIANG
  • BAI FENG

Assignees

  • 陕西省水利电力勘测设计研究院勘察分院

Dates

Publication Date
20260508
Application Date
20250419

Claims (9)

  1. 1. The coarse-grained soil compression coefficient detection device is characterized by comprising a base (1), an oil cylinder (2), a seat plate (3), a counter-force frame (4), a force transmission seat (8), a test cylinder (5) and a conveying assembly (6); The oil cylinder (2) is arranged on the base (1), and the axial direction of a piston rod of the oil cylinder (2) is perpendicular to the plane of the base (1); The piston rod of the oil cylinder (2) is connected with the seat board (3), a first cavity (7) used for the seat board (3) to penetrate through is formed in the base (1), and the seat board (3) is used for placing the test cylinder (5); the reaction frame (4) is arranged on the base (1), and the seat plate (3) is opposite to the reaction frame (4); The conveying assembly (6) comprises a frame bracket (63), two guide rails (61) and a plurality of pulleys (62); The guide rails (61) are arranged on the top wall of the base (1), the two guide rails (61) are arranged in parallel, and the guide rails (61) are arranged along the length direction of the base (1); a plurality of pulleys (62) are arranged on the bottom wall of the frame bracket (63), and the pulleys (62) can slide along the guide rail (61); the test cylinder (5) is arranged on the frame support (63), the test cylinder (5) is used for placing a soil sample, and a second cavity (64) used for the force transmission seat (8) to penetrate through is formed in the frame support (63).
  2. 2. The coarse-grained soil compression factor detection device of claim 1, wherein the reaction frame (4) comprises a reaction rod (42) and two guide rods (41); The two guide rods (41) are arranged on the base (1), the two guide rods (41) are axially arranged in parallel, and the axial direction of the guide rods (41) is parallel to the axial direction of a piston rod of the oil cylinder (2); the reaction force rod (42) is mounted on two guide rods (41).
  3. 3. The coarse-grained soil compression factor detection device as set forth in claim 2, wherein the guide rod (41) comprises a smooth section (411) and a threaded section (412) which are integrally connected, the smooth section (411) is connected with the base (1), the threaded section (412) penetrates through the counter-force rod (42), the counter-force rod (42) is slidingly connected with the threaded section (412), nuts (43) abutted with the counter-force rod (42) are connected to the threaded section (412) in a threaded mode, and at least one nut (43) is arranged on two opposite sides of the counter-force rod (42).
  4. 4. The coarse soil compressibility factor detection device according to claim 2, wherein the test tube (5) comprises an inner tube portion (52), an outer tube portion (51) and at least two connecting portions (53), the outer tube portion (51) being mounted on the frame bracket (63); The inner barrel part (52) is coaxially arranged with the outer barrel part (51), and the inner barrel part (52) is used for placing a soil sample, and the inner barrel part (52) is fixedly connected with the outer barrel part (51) through the connecting part (53); a water placing gap (54) for containing water is reserved between the inner barrel part (52) and the outer barrel part (51), and a water seepage hole (55) for soaking a soil sample is formed in the inner barrel part (52).
  5. 5. The coarse-grained soil compressibility test apparatus according to claim 4, wherein a force transmission seat (8) is disposed above the soil sample in the inner cylinder (52), and the force transmission seat (8) is configured to transmit a force to the reaction rod (42).
  6. 6. The coarse-grained soil compression factor detection device according to claim 5, wherein an adjusting block (9) is arranged between the reaction frame (4) and the force transmission seat (8), and the adjusting block (9) is arranged as one.
  7. 7. The coarse-grained soil compression factor detection device according to claim 5, wherein a plurality of adjusting blocks (9) are arranged between the reaction frame (4) and the force transmission seat (8).
  8. 8. The coarse-grained soil compression factor detection device as set forth in claim 1, wherein the guide rail (61) is provided with graduations.
  9. 9. The coarse-grained soil compression coefficient detection device of claim 1, wherein a plurality of limiting blocks (65) are arranged on the frame support (63), the limiting blocks (65) are uniformly distributed along the circumferential direction of the test cylinder (5), and the limiting blocks (65) form limiting cavities (66) for limiting the test cylinder (5).

Description

Coarse-grained soil compression coefficient detection device Technical Field The application relates to the technical field of hydraulic engineering investigation, in particular to a coarse-grained soil compression coefficient detection device. Background In hydraulic engineering investigation, the compression coefficient of coarse-grained soil is one of important parameters for evaluating the mechanical properties of soil, and ‌ coarse-grained soil compression coefficient ‌ is the ratio of the variation of soil mass pore ratio to the corresponding pressure increment under the side limit condition. The compression coefficient reflects the volume change of the soil body under the increment of unit pressure, the smaller the value is, the lower the compressibility of the soil body is, coarse-grained soil generally belongs to low-to-medium-compressibility soil, the compression coefficient range is generally between 0.1 and 0.5MPa -1, and the specific value is influenced by conditions such as grain composition, compactness and the like. At present, common coarse-grained soil compression coefficient detection equipment mainly comprises a unidirectional compressor, a triaxial compressor and a consolidation apparatus, wherein the unidirectional compressor is simple in structure and is only suitable for single working conditions, the triaxial compressor can simulate complex stress states, but is high in equipment cost and complex in operation, the consolidation apparatus is suitable for compression test of saturated soil and poor in test effect on unsaturated soil, and when the coarse-grained soil compression coefficient detection equipment is used for testing soil under different working conditions, equipment needs to be replaced or test conditions need to be adjusted according to different working conditions, so that the detection efficiency is low. Disclosure of utility model The application provides a coarse-grained soil compression coefficient detection device for improving the detection efficiency of coarse-grained soil compression coefficients. The application provides a coarse-grained soil compression coefficient detection device, which adopts the following technical scheme: the coarse-grained soil compression coefficient detection device comprises a base, an oil cylinder, a seat plate, a reaction frame, a test cylinder and a conveying assembly; the oil cylinder is arranged on the base, and the axial direction of a piston rod of the oil cylinder is perpendicular to the plane of the base; The piston rod of the oil cylinder is connected with the seat plate, a first cavity for the seat plate to pass through is formed in the base, and the seat plate is used for placing the test cylinder; The reaction frame is arranged on the base, and the seat plate is opposite to the reaction frame; The conveying assembly comprises a frame bracket, two guide rails and a plurality of pulleys; The guide rails are arranged on the top wall of the base, the two guide rails are arranged in parallel, and the guide rails are arranged along the length direction of the base; the pulleys are arranged on the bottom wall of the support and can slide along the guide rail; the test cylinder is arranged on the frame support, the test cylinder is used for placing a soil sample, and a second cavity used for the force transmission seat to penetrate through is formed in the frame support. According to the technical scheme, in the coarse-grained soil compression coefficient detection process, firstly, a worker applies force to the frame support, the frame support drives the pulleys to move along the guide rails, meanwhile, the frame support drives the test cylinder to move synchronously, the projection of the test cylinder in the vertical direction is completely separated from the projection of the counter-force frame in the vertical direction, then, the worker places the premixed coarse-grained soil in the inner cavity of the test cylinder, after coarse-grained soil is filled, the worker applies force to the test cylinder, due to the gravity action of the test cylinder and coarse-grained soil, the test cylinder applies force to the frame support, the frame support drives the pulleys to move along the guide rails, the test cylinder is located under the oil cylinder, the oil cylinder is adjusted, the piston rod of the oil cylinder moves upwards, when the piston rod of the oil cylinder contacts with the test cylinder, the test cylinder moves upwards, the counter-force frame applies reverse force to the coarse-grained soil in the test cylinder so as to detect the ratio of the pore ratio of the coarse-grained soil in the test cylinder to the corresponding pressure increment, and the designed coarse-grained soil compression coefficient detection device can conveniently detect the coarse-grained soil with different size characteristics in the test cylinder along the length direction, and the test cylinder is convenient to realize the detection of differe