CN213302209U - Coarse-grained soil relative density vibration table method test device - Google Patents
Coarse-grained soil relative density vibration table method test device Download PDFInfo
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- CN213302209U CN213302209U CN202022057826.5U CN202022057826U CN213302209U CN 213302209 U CN213302209 U CN 213302209U CN 202022057826 U CN202022057826 U CN 202022057826U CN 213302209 U CN213302209 U CN 213302209U
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Abstract
The utility model discloses a coarse-grained soil relative density vibration table method test device, wherein a U-shaped plate and a crane beam are arranged on a bottom plate, and a lifting motor and a hook which are connected through a pulley are arranged on the crane beam; the vibration table is characterized by further comprising a vibration table base arranged on the upper surface of the bottom plate, the vibration table base is connected with a vibration table through a vibration spring, and a vibration motor is further fixed on the lower surface of the vibration table; the vibrating table further comprises an annular sample cylinder bottom plate arranged on the upper surface of the vibrating table and a sample cylinder inserted into the annular sample cylinder bottom plate, and two horizontally arranged limiting blocks are arranged at the top of the fixing rod; the test tube also comprises a circular weighting cover plate with the diameter the same as the inner diameter of the sample tube and the protective tube and a counterweight cast iron block arranged above the weighting cover plate; through set up in vibration sensor on the shaking table is used for measuring amplitude and vibration frequency, has improved and has detected the standardization to can rely on the bottom plate of taking the wheel to shift at the detection scene conveniently, with improvement detection efficiency.
Description
Technical Field
The utility model relates to a geotechnical test device field especially relates to a coarse-grained soil relative density shaking table method test device.
Background
The compaction degree is an important index for reflecting the soil engineering property, and the quality of soil compaction is directly related to the engineering operation safety. For compaction of non-cohesive, freely draining coarse soil, mr. Terzaghi proposed as early as 1943 that relative density should be controlled to evaluate tightness and compaction quality, which is widely used in the evaluation criteria of coarse soil compaction. In view of the importance of coarse-grained soil compaction on the safety of the whole dam, the industry specifications of hydraulic structure anti-seismic design specifications (SL203-97), hydraulic structure anti-seismic design specifications (DL5073-2000), clause 5.2.8, item 6.2.6, item 6.4, both of the design specifications of rolling-type earth-rock dam (DL/T5395-2007) and concrete panel rock-fill dam (DL/T5016-2011) of the design specifications of earth-rock dam in China stipulate the control standard of relative density in clear text.
For the relative density test technology of coarse-grained soil, the experiment specification of water conservancy and hydropower engineering coarse-grained soil (DL/T5356-. For this reason, appendix A of the Rolling test procedure for Earth and Stone materials (NB35016), and the detection technical procedure for compacted Mass and Density bucket method of Hydraulic and Electrical engineering Sand and gravel materials (T/CEC 5001-2016) specify a large-sized density bucket method, and a relative density test in situ was performed.
The coarse-grained soil relative density refers to the ratio of the difference between the pore ratio of the cohesionless soil in the loose state and the pore ratio in the natural (or given) state to the difference between the pore ratio in the loose state and the pore ratio in the tightest state. Laboratory tests are often calculated using maximum and minimum dry densities. The coarse-grained soil relative density vibration table method test is an extremely key parameter which must be carried out before a coarse-grained soil field rolling test, and is a key factor which is related to the accuracy and the scientificity of a field rolling result.
The coarse-grained soil relative density test is a key factor for carrying out rolling test and field filling construction quality control before the field filling construction of coarse-grained soil, and is widely applied to the engineering fields of earth and rockfill dams, water diversion channels, traffic roads, foundation filling and the like.
The coarse-grained soil relative density vibration table method test device is a device for measuring the maximum dry density and the minimum dry density in a laboratory. The existing coarse-grained soil relative density vibration table method test device on the market consists of a vibration table, a sample cylinder and a balance weight, is simple in structure, needs 4 testers to cooperate due to large weight of the heavy materials during field test, and increases the consumed time due to difficulty in taking out the sample after the maximum dry density test; 4 testers are required to complete a group of tests within 1h in the whole test process, and potential safety hazards caused by manually lifting the balance weight in the detection process are large; the device is fixed on the ground of an operating room, so that the field detection of detection personnel cannot be carried out. The technical requirements of the test detection equipment at the present stage cannot be met due to the overall structure.
SUMMERY OF THE UTILITY MODEL
The utility model solves the technical problems that the existing coarse-grained soil relative density vibration table method test device needs manual loading and unloading of the balancing weight on one hand, wastes time and labor, and has potential safety hazards of heavy object sliding; on the other hand, the device is usually fixed on the bottom surface of an operation room, so that the problem of field detection cannot be realized, and meanwhile, the problems that the amplitude and the frequency of a laboratory cannot be accurately measured in the vibration process, and errors in the test process cannot be found in time exist.
In order to solve the technical problem, the utility model provides a coarse-grained soil relative density vibration table method test device, which comprises a bottom plate with wheels, wherein the bottom plate is provided with a U-shaped plate with a downward opening, the top of the inner side of the U-shaped plate is provided with a crane beam, the crane beam is provided with a lifting motor and a steel wire rope roll which are connected through a pulley, and the bottom of the steel wire rope roll is provided with a hook; the vibration table is characterized by further comprising a vibration table base arranged on the upper surface of the bottom plate, the vibration table base is connected with a vibration table through a vibration spring, and a vibration motor is further fixed on the lower surface of the vibration table; the vibration table is characterized by further comprising an annular sample cylinder bottom plate arranged on the upper surface of the vibration table, wherein four fixing through holes are uniformly formed in the sample cylinder bottom plate along the circumferential direction and are fixedly connected with the vibration table through fixing bolts; the sample barrel comprises a sample barrel base plate, a sample barrel base plate and a fixing rod, wherein the sample barrel base plate is provided with a through hole; the test sample tube is inserted into the annular test sample tube bottom plate, and a half of the thickness of the tube body of the test sample tube is cut at the outer side of the top end of the test sample tube to form a fixed clamping groove bulge; the diameter and the thickness of the protective cylinder are the same as those of the protective cylinder, and a half of the thickness of the cylinder body is cut at the inner side of the bottom end of the protective cylinder to form a fixed clamping groove recess which is sleeved outside the fixed clamping groove protrusion; the outer wall of the protective cylinder is also provided with a horizontal fixing lug, and a rotary bayonet is arranged in the fixing lug; two limiting blocks which are horizontally arranged are arranged at the top of the fixed rod, and the fixed lugs are just clamped between the limiting blocks and fixed on the fixed rod through the rotating bayonets; the test tube also comprises a circular weighting cover plate with the diameter the same as the inner diameter of the sample tube and the protective tube and a counterweight cast iron block arranged above the weighting cover plate.
Particularly, the upper surface of the bottom plate is also provided with a controller and a storage battery.
In particular, a traction hook is further arranged on the front end face of the bottom plate.
Particularly, the upper surface of the weighting cover plate is provided with a lifting handle which is concave downwards.
In particular, the vibration table further comprises a vibration sensor which is arranged on the vibration table and used for measuring the amplitude and the frequency of vibration.
The utility model has the advantages that: the lifting and placing of the configured weight is finished by the lifting device without manual operation, so that the damage to detection personnel caused by emergency in the lifting and placing process of the weight is avoided in the whole process, the personnel are saved, the labor cost for detection is reduced, and the detection safety is improved; still through set up in vibration sensor on the shaking table is used for measuring amplitude and vibration frequency, has improved and has detected the normalization to can rely on the bottom plate of taking the wheel to shift at the detection scene conveniently, with improvement detection efficiency.
Drawings
Fig. 1 is a front view of the structure of the device of the present invention.
Fig. 2 is a schematic sectional view of the structure of the sample tube.
Fig. 3 is a schematic structural diagram of a bottom plate of a sample cylinder.
Fig. 4 is a schematic sectional view of the structure of the casing.
Wherein, the bottom plate-1; a traction hook-11; a U-shaped plate-2; a crane beam-21; a pulley-22; a lift motor-23; steel wire rope winding-24; a hook-25; a vibration table base-3; a vibrating spring-31; a vibrating table-4; a vibration motor-41; sample barrel base-42; a fixing through hole-43; a rod through hole-44; a fixed rod-45; a limiting block-46; a sample cylinder-5; a slot projection-51 a; a slot recess-51 b; a casing-52; a fixing lug-53; a rotary bayonet-54; a weighted cover-55; a controller-6; and (7) a storage battery.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A coarse-grained soil relative density vibration table method test device comprises a bottom plate 1 with wheels, wherein a U-shaped plate 2 with a downward opening is arranged on the bottom plate 1, a crane beam 21 is arranged at the top of the inner side of the U-shaped plate 2, a lifting motor 23 and a steel wire rope roll 24 which are connected through a pulley 22 are arranged on the crane beam 21, and a hook 25 is arranged at the bottom of the steel wire rope roll 24; the vibration table further comprises a vibration table base 3 arranged on the upper surface of the bottom plate 1, the vibration table base 3 is connected with a vibration table 4 through a vibration spring 31, and a vibration motor 41 is further fixed on the lower surface of the vibration table 4; the device also comprises an annular sample cylinder bottom plate 42 arranged on the upper surface of the vibration table 4, wherein four fixing through holes 43 are uniformly arranged on the sample cylinder bottom plate 42 along the circumferential direction and are fixedly connected with the vibration table 4 through fixing bolts; the sample cylinder bottom plate 42 is provided with two fixing rod through holes 44 with internal threads, and the fixing rods 45 are fixed in the fixing rod through holes 44 through threads; the sample tube 5 is inserted into the annular sample tube bottom plate 42, and a half of the thickness of the tube body of the sample tube 5 is cut at the outer side of the top end to form a fixed clamping groove bulge 51 a; the sample testing device further comprises a protective cylinder 52 arranged outside the sample cylinder 5, the diameter and the thickness of the protective cylinder 52 are the same as those of the sample cylinder 5, a half of the thickness of the cylinder body is cut off from the inner side of the bottom end of the protective cylinder 52 to form a fixed clamping groove recess 51b, and the protective cylinder is sleeved on the outer part 51a of the fixed clamping groove protrusion; the outer wall of the protective cylinder 52 is also provided with a horizontal fixing lug 53, and a rotary bayonet 54 is arranged in the fixing lug 53; two horizontally arranged limiting blocks 46 are arranged at the top of the fixing rod 45, and the fixing lug 53 is just clamped between the limiting blocks 46 and fixed on the fixing rod 45 through a rotating bayonet 54; the sample feeder also comprises a circular weighting cover plate 55 with the diameter the same as the inner diameter of the sample cylinder 5 and the protective cylinder 52, and a balancing weight arranged above the weighting cover plate 55.
The bottom plate 1 is formed by welding an upper layer of steel plate and a lower layer of steel plate with the size of 800 x 2350 x 10mm and the steel plate with the distance of 120mm from the top to the bottom, a dragging hook with the external size of 120 x 250 and welded by round steel with the diameter of 10mm is welded on the left side, wheels with the width of phi 250mm and 20cm are welded on positions 650mm away from the left side and 100 mm away from the two sides and 175mm away from the bottom seat bottom, and wheels with the width of phi 250mm and 20cm are welded on positions 2050mm away from the left side and 100 mm away from the two sides and 175mm away from the bottom seat bottom. The counter weight is cast-in-place concrete with density of 2400Kg/m and is located between two layers of steel plates of the bottom plate 1.
The vibration motor 41 uses two electric motors of 1.1KW, of size 200 × 300 × 150 mm. The table top of the vibration table 4 is made of 762 × 5mm steel plate, and a total of 4 fixing through holes 43 of a sample cylinder bottom plate 42 with the diameter of 10mm are drilled at 196mm of the table top. The sample cylinder bottom plate 42 is made of a steel plate with the diameter of 420mm and the thickness of 10mm, a fixing through hole 43 with the diameter of 12mm and used for connecting the sample cylinder bottom plate 42 with the vibration table 4 is drilled at a position which is 185mm away from the center of a circle in the direction of every 90 degrees, a fixing rod through hole 44 is respectively drilled and tapped in the direction of every 180 degrees, and a fixing rod 45 with the diameter of 10mm and the length of 480mm and threaded openings in the range of 30mm at the upper end and the lower end is screwed into the fixing rod through hole 44.
The sample cylinder 5 is made of high-strength alloy steel with the inner diameter of 300mm, the outer diameter of 320mm and the height of 340mm, and a half of the thickness of the cylinder body is cut off from the outer side of the top end to form a fixed clamping groove bulge 51 a; the protective cylinder 52 is made of high-strength alloy steel with the inner diameter of 300mm, the outer diameter of 320mm and the height of 255mm, and a half of the thickness of the cylinder body is cut at the inner side of the bottom end of the protective cylinder 52 to form a fixed clamping groove recess 51 b; a fixing lug 53 with the thickness of 50mm 30mm 10mm is symmetrically and horizontally welded on the outer side wall of the protective cylinder 52 at a position 120mm away from the bottom surface, and a rotary bayonet 54 is arranged at the center of the side edge of the fixing lug 53. The weighted cover 55 is made of high strength alloy steel having a diameter of 296mm by 12 mm. The weight is made of solid cast iron, and a hanger matching hole is reserved in the center of the top surface. The crane beam 21 consists of upper and lower beam segments of 50mm 5mm 1850 mm.
The utility model discloses the application method of device does: filling a prepared filling material with the maximum grain diameter of not more than 60mm into a sample cylinder 5, enabling the filling material to be parallel to the cylinder opening of the sample cylinder 5 in height, placing a weighted cover plate 55 on a sample, lifting the weighted cover plate 55 by a lifting motor 23, opening a controller to adjust the amplitude to be 0.64mm, the frequency to be 50HZ and the vibration time to be 8min, measuring the amplitude and the frequency by a vibration meter during vibration, lifting the weighted moving bottom plate 1 by the lifting motor 23 after the vibration is finished, taking out the weighted cover plate 55, measuring the distance from the top surface of the sample to the top of the sample cylinder by a depth vernier caliper, taking out the sample in the sample cylinder, weighing the mass and recording the sample; the test was then repeated once more as a parallel test, with the final result being the average of the two tests.
As a preferred embodiment, a controller 6 and a storage battery 7 are further provided on the upper surface of the base plate 1.
As a preferred embodiment, a traction hook 11 is further arranged on the front end face of the bottom plate 1; the function of the traction hook 11 is to facilitate the transfer of the soleplate 1 on the construction site.
As a preferred embodiment, the upper surface of the weighted cover plate 55 is provided with a lifting handle which is concave downwards; the lifting handle is convenient to put in and take out after the test is finished.
As a preferred embodiment, the vibration table further comprises a vibration sensor arranged on the vibration table 4 for measuring the amplitude and the frequency of the vibration.
The utility model discloses "connect", "fixed" that appear in the description can be fixed connection, machine-shaping, welding, also can mechanical connection, and particular case understands that the aforesaid belongs to the utility model provides a concrete meaning.
In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used, and their designated orientations or positional relationships are only for convenience of description and simplicity of description, but do not indicate or imply that the designated device or element must have a particular orientation, and therefore should not be construed as limiting the present invention.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. A coarse-grained soil relative density vibration table method test device is characterized by comprising a bottom plate (1) with wheels, wherein a U-shaped plate (2) with a downward opening is arranged on the bottom plate (1), a crane beam (21) is arranged at the top of the inner side of the U-shaped plate (2), a lifting motor (23) and a steel wire rope roll (24) which are connected through a pulley (22) are arranged on the crane beam (21), and a hook (25) is arranged at the bottom of the steel wire rope roll (24); the vibration table is characterized by further comprising a vibration table base (3) arranged on the upper surface of the bottom plate (1), the vibration table base (3) is connected with a vibration table (4) through a vibration spring (31), and a vibration motor (41) is further fixed on the lower surface of the vibration table (4); the device is characterized by also comprising an annular sample cylinder bottom plate (42) arranged on the upper surface of the vibration table (4), wherein four fixing through holes (43) are uniformly formed in the sample cylinder bottom plate (42) along the circumferential direction and are fixedly connected with the vibration table (4) through fixing bolts; the test sample tube comprises a test sample tube base plate (42) and is characterized by further comprising two fixing rod through holes (44) which are symmetrically arranged on the test sample tube base plate (42) and are provided with internal threads, and fixing rods (45) are fixed in the fixing rod through holes (44) through threads; the device also comprises a sample cylinder (5) inserted into the annular sample cylinder bottom plate (42), and a fixed clamping groove bulge (51 a) is formed by cutting half of the thickness of the cylinder body of the sample cylinder (5) on the outer side of the top end; the device is characterized by further comprising a protective cylinder (52) arranged outside the sample cylinder (5), wherein the diameter and the thickness of the protective cylinder (52) are the same as those of the sample cylinder (5), a half of the thickness of a cylinder body is cut at the inner side of the bottom end of the protective cylinder (52) to form a fixed clamping groove recess (51 b), and the protective cylinder is sleeved on the outer part of the fixed clamping groove protrusion (51 a); the outer wall of the protective cylinder (52) is also provided with a horizontal fixing lug (53), and a rotary bayonet (54) is arranged in the fixing lug (53); the top of the fixed rod (45) is provided with two horizontally arranged limiting blocks (46), and the fixed lug (53) is just clamped between the limiting blocks (46) and fixed on the fixed rod (45) through a rotary bayonet (54); the sample weighing device further comprises a circular weighting cover plate (55) with the diameter the same as the inner diameter of the sample cylinder (5) and the protective cylinder (52), and a balancing weight arranged above the weighting cover plate (55).
2. The vibrating table method test device for the relative density of coarse-grained soil according to claim 1, characterized in that a controller (6) and a storage battery (7) are further arranged on the upper surface of the bottom plate (1).
3. The test device for the coarse-grained soil relative density vibrating table method according to claim 1, characterized in that a traction hook (11) is further arranged on the front end surface of the bottom plate (1).
4. The coarse-grained soil relative density shaking table method test device as claimed in claim 1, characterized in that the upper surface of the weighted cover plate (55) is provided with a lifting handle which is concave downwards.
5. The testing device of the vibrating table method for the relative density of coarse-grained soil according to claim 1, characterized by further comprising a vibration sensor arranged on the vibrating table (4) and used for measuring the amplitude and the vibration frequency.
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| CN202022057826.5U CN213302209U (en) | 2020-09-18 | 2020-09-18 | Coarse-grained soil relative density vibration table method test device |
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| CN202022057826.5U CN213302209U (en) | 2020-09-18 | 2020-09-18 | Coarse-grained soil relative density vibration table method test device |
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| CN213302209U true CN213302209U (en) | 2021-05-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166689A (en) * | 2021-12-06 | 2022-03-11 | 鹤山市联发商品混凝土有限公司 | Aggregate bulk density testing arrangement |
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- 2020-09-18 CN CN202022057826.5U patent/CN213302209U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166689A (en) * | 2021-12-06 | 2022-03-11 | 鹤山市联发商品混凝土有限公司 | Aggregate bulk density testing arrangement |
| CN114166689B (en) * | 2021-12-06 | 2022-08-23 | 鹤山市联发商品混凝土有限公司 | Aggregate bulk density testing arrangement |
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