Automatic uniform-speed up-down stirring device and system for geotechnical test

Abstract

The utility model belongs to the technical field of geotechnical tests, and provides an automatic uniform-speed up-down stirring device for geotechnical tests, which comprises a workbench, a measuring cylinder arranged on the workbench, a stirring mechanism positioned above the measuring cylinder, and a mounting seat and a clamping block arranged on the workbench, elastic reset mechanisms are symmetrically arranged in the mounting base, and the clamping blocks are located on the elastic reset mechanisms; an elastic telescopic mechanism is further arranged on the workbench; the free end of the elastic telescopic mechanism is located between the symmetrically-arranged clamping blocks. According to the utility model, the measuring cylinder is clamped, fixed and loosened through the cooperation of the elastic telescopic mechanism and the elastic reset mechanism, so that the measuring cylinder is not easy to shake when a sample suspension in the measuring cylinder is stirred, the operation is convenient and rapid, and the controller and the timer are arranged to adjust the stirring time and the stirring frequency and automatically start timing after the stirring is completed; and subsequent test work is facilitated. In addition, the utility model further discloses a stirring system adopting the stirring device.

Description

TECHNICAL FIELD

[0001] The utility model belongs to geotechnical test technical field, concretely is a kind of automatic uniform speed up and down stirring device and system for geotechnical test. BACKGROUND

[0002] Particle analysis experiment is the important content in geotechnical test, is used to determine the distribution of different particle sizes in soil sample, to determine the gradation characteristics of soil.Densitometer method (also known as sedimentation method) is the common method in particle analysis experiment applicable to fine-grained soil with particle size less than 0.075mm.Free swell ratio experiment is used to determine the water absorption and swelling degree of cohesive soil under unconfined condition.The experiment is mainly used to evaluate the swelling potential of cohesive soil, to provide important reference for engineering design and construction.

[0003] In particle analysis experiment and free swell ratio experiment, the step of stirring sample suspension uniformly from top to bottom is involved, particle analysis experiment stipulates that stirrer is stirred in measuring cylinder from top to bottom for 30 times (1min), free swell ratio stipulates that stirrer is stirred from top to bottom for 10 times (10s), and stirring times, time and stability in this step will directly affect the accuracy of test result.At present, the stirrer equipped in experiment is manually operated, lacks stable uniform stirring function, and this method not only consumes time and effort, but also has large human influence factor, which can lead to reduced measurement reliability.Therefore, a stable device capable of realizing automatic uniform stirring is urgently needed to improve the efficiency of test and the accuracy of data.

[0004] To solve the above problems, CN202323510280.4 discloses a pretreatment device for determining soil mechanical composition, comprising: a base, a plurality of sedimentation cylinders for containing mixed liquid of soil sample and water and a plurality of liquid receiving boxes are placed on the top end of the base; a plurality of rotary stirring liquid suction mechanisms are fixed on the top end of the base, and correspond to the plurality of sedimentation cylinders and the plurality of liquid receiving boxes one by one.

[0005] In the above technical solution, the stirring disc of stirring rod is reciprocatingly lifted by driving motor to rotate screw rod to stir sample suspension in sedimentation cylinder, but this solution lacks controller for controlling stirring time and times, still has large human influence factor, and since there is no fixing device for fixing sedimentation cylinder, sedimentation cylinder is easy to shake and pour during stirring. UTILITY MODEL CONTENT

[0006] The utility model discloses a purpose at solving above -mentioned problem provides a kind of automatic uniform speed up and down stirring device for soil test, the device is fixed and loosened by elastic expansion mechanism and elastic reset mechanism cooperation Clamping cylinder, so that stirring cylinder sample suspension is not easy to shake, and it is convenient and fast to operate.In addition, the utility model also discloses a stirring system using the stirring device, the system is by setting controller controls the time and times of stirring, realizes the function of automatic uniform speed stirring sample suspension in cylinder.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of automatic uniform speed up and down stirring device for soil test, including workbench, setting on workbench cylinder and stirring mechanism, the stirring mechanism is located above cylinder, still include the mounting seat and clamping block being set on workbench, the mounting seat is equipped with the elastic reset mechanism being arranged symmetrically, and the clamping block is located on elastic reset mechanism;The workbench is also equipped with elastic expansion mechanism;

[0009] The free end of the elastic expansion mechanism is located between the symmetrically arranged clamping blocks and is linked with the symmetrically arranged elastic reset mechanisms;The elastic expansion mechanism is used to drive the symmetrically arranged elastic reset mechanisms to move closer to each other or away from each other, so that the clamping blocks clamp or loosen the cylinder.

[0010] In the above-mentioned automatic uniform speed up and down stirring device for soil test, the stirring mechanism includes two connecting seats arranged on the workbench, a mounting plate connected with the connecting seats, a threaded rod arranged vertically, and a stirrer, the stirrer is provided with a plurality of through holes;

[0011] The stirrer is connected to one end of the threaded rod by bolts, and the stirrer is located above the cylinder.

[0012] The mounting plate is provided with a vertical lifting mechanism connected with the threaded rod, the stirrer is connected to one end of the threaded rod, and the vertical lifting mechanism is used to drive the stirrer to lift to stir the sample suspension in the cylinder.

[0013] In the above-mentioned automatic uniform speed up and down stirring device for soil test, the bottom of the mounting plate is provided with two connecting rods corresponding to the connecting seats, and the connecting seat is provided with a bolt hole, and the connecting rod is tightly fixed in the connecting seat by passing through the bolt hole.

[0014] In the above-mentioned automatic uniform speed up and down stirring device for soil test, the elastic expansion mechanism includes a driving block horizontally arranged in the mounting seat, a fixed block arranged on the workbench, a pull rod, and a first spring sleeved on the pull rod.

[0015] The driving block is a semicircular structure, the clamping blocks are symmetrically arranged at two ends of the driving block, and the side wall of the driving block is tangent to the side wall of the clamping block;

[0016] The pull rod is movably arranged on the fixed block, one end of the pull rod is connected with the driving block, and the first spring is arranged between the driving block and the fixed block;

[0017] When the pull rod is pulled, the driving block compresses the first spring and drives the two clamping blocks to move away from each other, and the elastic reset mechanism is compressed at the same time;

[0018] When the first spring drives the driving block to reset, the elastic reset mechanism drives the two clamping blocks to move close to each other, so that the clamping blocks clamp and fix the measuring cylinder.

[0019] In the automatic uniform-speed up-and-down stirring device for soil test, the elastic reset mechanism comprises a second spring arranged horizontally, one end of the second spring is connected with one end in the mounting seat, and the other end is provided with a connecting block; the side wall of the connecting block is provided with an inclined surface tangent to the side wall of the driving block;

[0020] The two connecting blocks are located at two ends of the driving block respectively; and the clamping block is connected to the connecting block;

[0021] The mounting seat is provided with a horizontal sliding groove, and the bottom of the connecting block is provided with a guide sliding block in sliding fit with the sliding groove; and the second spring is used to drive the clamping block to reset and clamp and fix the measuring cylinder.

[0022] In the automatic uniform-speed up-and-down stirring device for soil test, the clamping block comprises a fixed part and a clamping part in L-shaped structure, the vertical section of the fixed part is connected with the connecting block, the clamping part is arranged on one side of the horizontal section of the fixed part, and the clamping part is matched with the shape of the measuring cylinder.

[0023] In the automatic uniform-speed up-and-down stirring device for soil test, the mounting seat is further provided with a limiting block, when the pull rod is pulled, the travel of the driving block is limited by the limiting block, so that the side wall of the driving block is tangent to the side wall of the clamping block.

[0024] In the automatic uniform-speed up-and-down stirring device for soil test, the bottom of the driving block is provided with a pulley in contact with the bottom of the mounting seat.

[0025] Meanwhile, the application also provides an automatic uniform-speed up-and-down stirring system for soil test, which comprises the automatic uniform-speed up-and-down stirring device for soil test as described above, a stirring mechanism is arranged on the stirring device, and the stirring mechanism is electrically connected with a controller; and a timing device is further arranged on the stirring mechanism and electrically connected with the controller.

[0026] The controller is used for controlling the stirring time and frequency of the stirring mechanism; and the timing device is used for timing after the stirring mechanism completes the stirring.

[0027] Compared with the prior art, the utility model has the advantages of:

[0028] In the utility model, when the graduated cylinder needs to be fixed, the elastic telescopic mechanism is controlled to contract, the clamping blocks are away from each other, the elastic reset mechanism is compressed by the clamping blocks, the elastic reset mechanism is reset after the elastic telescopic mechanism is released, the reset elastic reset mechanism drives the clamping blocks to approach each other, and then the graduated cylinder is clamped and fixed; when the graduated cylinder is taken out, the elastic telescopic mechanism is controlled to contract again, and the clamping blocks are away from each other to release the fixing of the graduated cylinder.

[0029] The controller is used for controlling the stirring time and frequency of the stirring mechanism; and the timing device is used for timing after the stirring mechanism completes the stirring. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a perspective view of an automatic constant-speed up-and-down stirring device for a soil test of example 1;

[0031] Figure 2 is a perspective view of an elastic telescopic mechanism of an automatic constant-speed up-and-down stirring device for a soil test of example 1;

[0032] Figure 3 is a perspective view of an elastic telescopic mechanism of an automatic constant-speed up-and-down stirring device for a soil test of example 1;

[0033] Figure 4 is a perspective view of an automatic constant-speed up-and-down stirring system for a soil test of example 2;

[0034] In the drawings, the reference numerals of each figure are as follows:

[0035] 1, workbench; 2, graduated cylinder; 3, stirring mechanism; 31, connecting seat; 311, bolt hole; 32, mounting plate; 33, threaded rod; 34, vertical lifting mechanism; 35, stirrer; 351, through hole; 36, connecting rod; 4, mounting seat; 41, limiting block; 5, elastic telescopic mechanism; 51, driving block; 511, pulley; 52, fixed block; 53, pull rod; 54, first spring; 6, elastic reset mechanism; 61, second spring; 62, connecting block; 621, inclined surface; 63, guide sliding block; 7, clamping block; 71, fixed part; 72, clamping part; 8, controller; 9, timing device. DETAILED DESCRIPTION

[0036] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0037] Embodiment 1

[0038] Reference Figures 1 to 3 The automatic uniform-speed up-and-down stirring device for soil test comprises a workbench 1, a measuring cylinder 2 and a stirring mechanism 3 arranged on the workbench 1, the stirring mechanism 3 is arranged above the measuring cylinder 2, and the device further comprises a mounting seat 4 and clamping blocks 7 arranged on the workbench 1, the mounting seat 4 is internally provided with symmetrically arranged elastic return mechanisms 6, and the clamping blocks 7 are arranged on the elastic return mechanisms 6; the workbench 1 is further provided with elastic telescopic mechanisms 5.

[0039] The free ends of the elastic telescopic mechanisms 5 are located between the symmetrically arranged clamping blocks 7 and are linked with the symmetrically arranged elastic return mechanisms 6; the elastic telescopic mechanisms 5 are used for driving the symmetrically arranged elastic return mechanisms 6 to move close to or away from each other, so that the clamping blocks 7 clamp or release the measuring cylinder.

[0040] Under this design, the experimental personnel first control the elastic telescopic mechanisms 5 to be compressed and drive the two clamping blocks 7 to move away from each other, and the clamping blocks 7 will compress the elastic return mechanisms 6 while moving away from each other, then the experimental personnel place the measuring cylinder 2 on the workbench 1, release the elastic telescopic mechanisms 5, and under the action of the elastic return mechanisms 6, the elastic return mechanisms 6 drive the two clamping blocks 7 to move close to each other, and the clamping blocks 7 clamp and fix the measuring cylinder, after the fixing of the measuring cylinder 2 is completed, the experimental personnel can control the stirring mechanism 3 to stir the sample suspension in the measuring cylinder 2, and after the stirring is completed, the elastic telescopic mechanisms 5 are compressed again, so that the measuring cylinder is released and then taken away; in this way, the fixing of the measuring cylinder 2 is completed by the cooperation of the elastic telescopic mechanisms 5 and the elastic return mechanisms 6, which is convenient for the experimental personnel to take out and place.

[0041] Preferably, the stirring mechanism 3 comprises two connecting seats 31 arranged on the workbench 1, a mounting plate 32 connected with the connecting seats 31, a threaded rod 33 arranged vertically, and a stirrer 35, and the stirrer 35 is provided with a plurality of through holes 351.

[0042] The stirrer 35 is connected with one end of the threaded rod 33 through bolts, and the stirrer 35 is located above the measuring cylinder 2.

[0043] The mounting plate 32 is provided with a vertical lifting mechanism 34 connected with the threaded rod 33, and the stirrer 35 is connected with one end of the threaded rod 33, and the vertical lifting mechanism 34 is used to drive the stirrer 35 to lift and stir the sample suspension in the graduated cylinder 2;

[0044] The bottom of the mounting plate 32 is provided with two connecting rods 36 corresponding to the connecting seats 31, and the connecting seats 31 are provided with bolt holes 311, and the connecting rods 36 are tightly fixed in the connecting seats 31 by bolts passing through the bolt holes 311.

[0045] In actual use, the vertical lifting mechanism 34 can drive the threaded rod 33 to rotate by cooperating with a motor and a bevel gear to realize the lifting of the stirrer 35.

[0046] Further, when the sample suspension in the graduated cylinder 2 is stirred, the vertical lifting mechanism 34 drives the threaded rod 33 to lift and drive the stirrer 35 to lift and stir the sample suspension in the graduated cylinder 2, and the experimental personnel can replace different stirrers according to different experiments by the fixing mode of the bolt;

[0047] Two connecting rods 36 are arranged at the bottom of the mounting plate 32, and the connecting rods 36 are inserted into the connecting seats 31 and tightly fixed by bolts during fixing, and in this way, the installation height of the mounting plate 32 can be adjusted.

[0048] In this embodiment, the elastic stretching mechanism 5 includes a driving block 51 horizontally arranged in the mounting seat 4, a fixed block 52 arranged on the workbench 1, a pull rod 53, and a first spring 54 sleeved on the pull rod 53.

[0049] The driving block 51 is a semicircular structure, the clamping blocks 7 are symmetrically arranged at two ends of the driving block 51, and the side wall of the driving block 51 is tangent to the side wall of the clamping block 7;

[0050] The pull rod 53 is movably arranged on the fixed block 52, one end of the pull rod 53 is connected with the driving block 51, and the first spring 54 is arranged between the driving block 51 and the fixed block 52.

[0051] When the pull rod 53 is pulled, the driving block 51 compresses the first spring 54 and drives the two clamping blocks 7 to move away from each other, and at the same time, the elastic reset mechanism 6 is compressed;

[0052] When the first spring 54 drives the driving block 51 to reset, the elastic reset mechanism 6 drives the two clamping blocks 7 to move close to each other, so that the clamping blocks 7 clamp and fix the graduated cylinder 2.

[0053] Specifically, since the driving block 51 of the semi-circular structure is tangent to the two clamping blocks 7, before fixing the measuring cylinder 2, the pull rod 53 is pulled, and the two clamping blocks 7 are driven away from each other by the driving block 51 of the semi-circular structure, and the two clamping blocks 7 away from each other compress the elastic return mechanism 6, and at the same time the driving block 51 gradually compresses the first spring 54, and then the measuring cylinder 2 is placed on the workbench 1, the pull rod 53 is loosened and the driving block 51 is driven to reset under the action of the first spring 54, and the clamping block 7 is driven to reset by the elastic return mechanism 6, and the clamping block 7 clamps and fixes the measuring cylinder 2.

[0054] In the embodiment, the elastic return mechanism 6 includes a second spring 61 arranged horizontally, one end of the second spring 61 is connected with one end in the mounting seat 4, and the other end is provided with a connecting block 62; a side wall of the connecting block 62 is provided with an inclined surface 621 tangent to a side wall of the clamping block 7.

[0055] Two connecting blocks 62 are located at two ends of the driving block 51 respectively; the clamping block 7 is connected on the connecting block 62.

[0056] The mounting seat 4 is provided with a horizontal sliding groove (not shown in the figure), and the bottom of the connecting block 62 is provided with a guide sliding block 63 matched with the sliding groove; the second spring 61 is used to drive the clamping block 7 to reset and clamp and fix the measuring cylinder 2.

[0057] Specifically, since the side surface of the driving block 51 is tangent to the inclined surface 621 of the connecting block 62, in the process of pulling the pull rod 53, the connecting block 62 is driven to move by the driving block 51, and the connecting block 62 drives the clamping block 7 to move in the moving process, so that the clamping block 7 moves away from each other, and at the same time the second spring 61 is compressed by the first connecting block 62, when the pull rod 53 is loosened, the first spring 54 drives the driving block 51 to reset, and the second spring 61 drives the connecting block 62 to reset so as to drive the clamping block 7 to move close to each other, and then the measuring cylinder 2 is clamped and fixed;

[0058] And by arranging the sliding groove in the mounting seat 4 and arranging the guide sliding block 63 at the bottom of the connecting block 62, it is ensured that the connecting block 62 can move in the horizontal direction.

[0059] Preferably, the clamping block 7 includes a fixed part 71 of an L-shaped structure and a clamping part 72, the vertical section of the fixed part 71 is connected with the connecting block 62, the clamping part 72 is arranged on one side of the horizontal section of the fixed part 71, and the clamping part 72 matches the shape of the measuring cylinder. The fixed part 71 is arranged on the connecting block 62, and the clamping part 72 matching the shape of the measuring cylinder 2 is arranged to clamp and fix the measuring cylinder.

[0060] Preferably, the mounting seat 4 is further provided with a limiting block 41, when the pull rod 53 is pulled, the stroke of the driving block 51 is limited by the limiting block 41, so as to keep the side wall of the driving block 51 tangent to the side wall of the clamping block 7.

[0061] Further, in order to avoid the stroke of the driving block 51 being too much when the pull rod 53 is pulled, so that the side wall of the connecting block 62 is no longer tangent to the side wall of the driving block 51, therefore, the limiting block 41 is arranged to abut against the driving block 51, so as to limit the stroke of the driving block 51 when the pull rod 53 is pulled, thereby keeping the side wall of the driving block 51 tangent to the side wall of the clamping block 7.

[0062] More preferably, the bottom of the driving block 51 is provided with a pulley 511 in contact with the bottom of the mounting seat 4. The pulley 511 mainly serves to improve the support of the bottom of the driving block 51.

[0063] Embodiment 2

[0064] Reference Figure 4 , an automatic uniform speed up and down stirring system for soil test, comprising the automatic uniform speed up and down stirring device for soil test as described in Embodiment 1, the stirring mechanism 3 is provided with a controller 8 electrically connected with the stirring mechanism 3; the stirring mechanism 3 is further provided with a timing device 9 electrically connected with the controller 8;

[0065] The controller 8 is used for controlling the stirring time and frequency of the stirring mechanism 3; the timing device 9 is used for timing after the stirring mechanism 3 completes the stirring.

[0066] In this design, the controller 8 is mainly used for controlling the time and frequency of the stirrer 35, after the fixing of the measuring cylinder 2 is completed, the experimenter can control the motor to work through the controller 8, the motor drives the lifting of the threaded rod 33 and then drives the lifting of the stirrer 35, in this way, the sample suspension in the measuring cylinder 2 is stirred, when the time and frequency of the stirring reach the preset value of the experimenter, the controller 8 controls the motor to stop working, then the timing device 9 starts timing, then the experimenter takes the reading at the specified time, after the experiment is completed, the fixing of the measuring cylinder 2 is released, finally the experimenter takes out the measuring cylinder 2.

[0067] The above only describes the preferred embodiments of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements or deformations can be made, these improvements or deformations should also be regarded as the protection scope of the present application.

Claims

1. An automatic uniform-speed vertical mixing device for geotechnical testing, comprising a worktable, a measuring cylinder disposed on the worktable, and a mixing mechanism, wherein the mixing mechanism is located above the measuring cylinder, characterized in that, It also includes a mounting base and a clamping block set on the workbench. The mounting base is provided with symmetrically arranged elastic reset mechanisms, and the clamping block is located on the elastic reset mechanism. The workbench is also provided with an elastic telescopic mechanism. The free end of the elastic telescopic mechanism is located between the symmetrically arranged clamping blocks and is linked with the symmetrically arranged elastic reset mechanism; the elastic telescopic mechanism is used to drive the symmetrically arranged elastic reset mechanism to move closer or further apart, so that the clamping blocks clamp or release the measuring cylinder.

2. The automatic uniform up-and-down mixing device for geotechnical testing according to claim 1, characterized in that, The stirring mechanism includes two connecting seats on the workbench, a mounting plate connected to the connecting seats, a vertically arranged threaded rod, and a stirrer, wherein the stirrer is provided with multiple through holes; The stirrer is connected to one end of a threaded rod by bolts, and the stirrer is located above the measuring cylinder; The mounting plate is provided with a vertical lifting mechanism connected to a threaded rod. The stirrer is connected to one end of the threaded rod. The vertical lifting mechanism is used to drive the stirrer to move up and down to stir the sample suspension in the measuring cylinder.

3. The automatic uniform-speed vertical mixing device for geotechnical testing according to claim 2, characterized in that, The bottom of the mounting plate is provided with two connecting rods that correspond one-to-one with the connecting seat. The connecting seat is provided with bolt holes, and the connecting rods are pressed and fixed in the connecting seat by bolts passing through the bolt holes.

4. The automatic uniform-speed vertical mixing device for geotechnical testing according to claim 1, characterized in that, The elastic telescopic mechanism includes a drive block horizontally disposed in the mounting base, a fixed block disposed on the worktable, a pull rod, and a first spring sleeved on the pull rod; The driving block has a semi-circular structure, and the clamping blocks are symmetrically arranged at both ends of the driving block, with the sidewall of the driving block being tangent to the sidewall of the clamping block. The pull rod is movably mounted on the fixed block, and one end of the pull rod is connected to the drive block. The first spring is disposed between the drive block and the fixed block. When the lever is pulled, the drive block compresses the first spring and drives the two clamping blocks to move away from each other, while simultaneously compressing the elastic reset mechanism; When the first spring drives the drive block to reset, the elastic reset mechanism drives the two clamping blocks to move closer to each other, so that the clamping blocks clamp and fix the measuring cylinder.

5. The automatic uniform-speed vertical mixing device for geotechnical testing according to claim 4, characterized in that, The elastic reset mechanism includes a horizontally arranged second spring, one end of which is connected to one end inside the mounting base, and the other end is provided with a connecting block; the side wall of the connecting block is provided with an inclined surface tangent to the side wall of the driving block; The two connecting blocks are located at both ends of the drive block; the clamping block is connected to the connecting blocks; The mounting base is provided with a horizontally arranged sliding groove, and the bottom of the connecting block is provided with a guide slider that slides in cooperation with the sliding groove; the second spring is used to drive the clamping block to reset and clamp the measuring cylinder to fix it.

6. The automatic uniform-speed vertical mixing device for geotechnical testing according to claim 5, characterized in that, The clamping block includes an L-shaped fixing part and a clamping part. The vertical section of the fixing part is connected to the connecting block, and the clamping part is disposed on one side of the horizontal section of the fixing part. The clamping part matches the shape of the measuring cylinder.

7. The automatic uniform-speed vertical mixing device for geotechnical testing according to claim 4, characterized in that, The mounting base is also provided with a limiting block. When the pull rod is pulled, the limit block restricts the stroke of the drive block so as to keep the side wall of the drive block tangent to the side wall of the clamping block.

8. The automatic uniform-speed vertical mixing device for geotechnical testing according to claim 4, characterized in that, The bottom of the drive block is provided with a pulley that contacts the bottom of the mounting base.

9. An automatic uniform-speed vertical mixing system for geotechnical testing, characterized in that, Includes an automatic uniform up-and-down mixing device for geotechnical testing as described in any one of claims 1 to 8, wherein the mixing mechanism is provided with a controller electrically connected to the mixing mechanism; the mixing mechanism is also provided with a timing device electrically connected to the controller; The controller is used to control the stirring time and number of stirring cycles of the stirring mechanism; the timing device is used to start timing after the stirring mechanism has finished stirring.

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