CN216621554U - Clay improvement torque tester - Google Patents

Abstract

The utility model relates to a clay improvement torque tester, which comprises a bearing platform, a stirring pot, a stirring device and a data acquisition system; the stirring pot is rotationally connected to the bearing platform, the stirring device is arranged above the stirring pot, the bearing platform is provided with a driving device and a controller, the driving device and the data acquisition system are electrically connected with the controller, and the driving device is used for driving the stirring device to reciprocate along the vertical direction so as to enable the stirring device to extend into the stirring pot to stir sample soil; the rotation axis of the stirring device is not coaxial with the rotation axis of the stirring pot, and the stirring diameter of the stirring device is larger than the radius of the stirring pot, so that the geometric center of the stirring pot is positioned in the stirring area of the stirring device; the data acquisition system can acquire torque signals of the stirring pot and the stirring device, and the controller can generate a torque-time curve according to the torque signals.

Description

Clay improvement torque tester

Technical Field

The utility model relates to a tunnel and underground works construction technical field especially relate to a clay improvement torque tester.

Background

Clay improvement torque tester, including the agitated kettle that holds sample soil and modifier and the agitating unit of setting directly over the agitated kettle, agitating unit can remove along vertical direction to stretch into and stir sample soil in the agitated kettle. The clay improvement torque tester is mainly used for testing the torque change condition of clay under different compound modifiers in the shield construction in laboratory research, thereby being capable of guiding the improvement of clay stratum in the field shield construction.

However, the stirring device of the clay improvement torque tester in the prior art is located at the center of the stirring pan when extending into the stirring pan, that is, the central portion of the stirring device has no transverse shear force when rotating in the stirring pan, and because a gap is formed between the stirring device and the inner wall of the stirring pan, clay is easily adhered to the stirring blade during clay improvement, and the clay is easily adhered to the wall.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a clay modified torque tester.

The utility model provides a clay improvement torque tester, which comprises a bearing platform, a stirring pot for containing sample soil and a modifier, a stirring device and a data acquisition system;

the stirring pot is rotationally connected to the bearing platform, and the stirring device is arranged above the stirring pot;

the bearing table is also provided with a driving device and a controller, the driving device and the data acquisition system are respectively electrically connected with the controller, and the driving device is used for driving the stirring device to reciprocate along the vertical direction so that the stirring device can extend into the stirring pot to stir the sample soil;

the rotation axis of the stirring device is not coaxial with the rotation axis of the stirring pot, and the stirring diameter of the stirring blade of the stirring device is larger than the radius of the stirring pot, so that the geometric center of the stirring pot is positioned in the stirring area of the stirring blade; the data acquisition system is used for acquiring torque signals of the stirring pan and the stirring device, and the controller is used for generating a torque-time curve according to the torque signals acquired by the data acquisition system.

Further, the stirring device comprises a stirring shaft and a plurality of stirring blades; the top end of the stirring shaft is fixed on the driving device, and the stirring blades are arranged on the stirring shaft at intervals along the circumferential direction of the stirring shaft.

Further, the stirring paddle comprises a first paddle section, a second paddle section and a third paddle section; the first paddle section and the second paddle section are arranged on the stirring shaft at intervals along the axial direction of the stirring shaft, the third paddle section is a curve paddle connected between the first paddle section and the second paddle section, and any two of the first paddle section, the second paddle section and the third paddle section are not coplanar.

Furthermore, the projection of one end of at least part of the stirring blade far away from the stirring shaft in the stirring pot is close to the inner wall of the stirring pot, and the projection of the other end of at least part of the stirring blade far away from the stirring shaft in the stirring pot covers the geometric center of the stirring pot.

Further, the driving device comprises a moving beam, two lifting screws and a first driving motor arranged in the bearing table; two elevating screw sets up relatively on the plummer, and all with first driving motor's output transmission is connected, the one end and two of walking beam one among the elevating screw spiro union, the other end and two of walking beam another among the elevating screw spiro union, agitating unit's top is rotated and is connected being close to of walking beam on the one side of agitated kettle.

Furthermore, one side of at least one lifting screw, which is close to the bearing platform, is provided with a limiting part, and when the movable beam stops on the limiting part, a safety distance is reserved between the bottom end of the stirring device and the bottom wall of the stirring pot.

Furthermore, be provided with two stands relatively on the plummer and be two the top of stand is provided with the crossbeam, the walking beam sets up the crossbeam, plummer and two in the space that the stand encloses to close, and with two stand sliding connection respectively.

Further, the data acquisition system comprises a first dynamic torque sensor and a second dynamic torque sensor; the first dynamic torque sensor is arranged on the stirring pot and used for collecting torque signals of the stirring pot to generate first torque signals, and the controller generates a first torque-time curve according to the first torque signals; the second dynamic torque sensor is arranged on the stirring device and used for collecting a torque signal of the stirring device to generate a second torque signal, and the controller generates a second torque-time curve according to the second torque signal.

Furthermore, a connecting structure for mounting the stirring pot is arranged on the bearing table; the connection structure includes the pivot and bears the seat, the one end of pivot with the plummer rotates to be connected, the other end fixedly connected with of pivot bear the seat, the agitator kettle can dismantle the connection and be in bear on the seat.

Further, the clay modified torque tester also comprises a second driving motor and/or a third driving motor; the second driving motor is electrically connected with the controller and used for driving the stirring device to rotate, the third driving motor is electrically connected with the controller and used for driving the stirring pot to rotate, and the rotation direction of the stirring device is opposite to that of the stirring pot.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the utility model provides a clay improvement torque tester, through setting up the plummer, a stirred tank for holding appearance soil and modifier, agitating unit and data acquisition system, wherein, the stirred tank rotates to be connected on the plummer, agitating unit sets up the top at the stirred tank, still be provided with controller and drive agitating unit along vertical direction reciprocating motion's drive arrangement on the plummer, agitating unit's axis of rotation and the axis of rotation disalignment of stirred tank, agitating unit's stirring paddle leaf's stirring diameter is greater than the radius of stirred tank, so that the geometric center of stirred tank is located stirring paddle leaf's stirring region. When the device is used specifically, a certain mass of sample soil and modifier for shield tunneling clay are placed in the stirring pot, the stirring device is started and starts to rotate, the driving device drives the stirring device to move downwards along the vertical direction, so that the stirring device extends into the stirring pot to stir the sample soil and the modifier, meanwhile, the data acquisition system acquires torque signals of the stirring pot and the stirring device, the controller automatically generates a torque-time curve according to the torque signals acquired by the data acquisition system, and through analysis of the torque-time curve, the torque change of the clay in front of and behind the modifier can be reflected more accurately, so that the improvement work of a clay stratum encountered in site shield construction can be guided conveniently. Because the rotation axis of the stirring device is not coaxial with the rotation axis of the stirring pot, and the stirring diameter of the stirring paddle of the stirring device is larger than the radius of the stirring pot, when the stirring device stirs in the stirring pot, the geometric center of the stirring pot is positioned in a plurality of stirring areas of the stirring paddle, therefore, the stirring device rotates in the stirring pot and the stirring pot rotates to jointly form a planetary stirring mode, thereby leading the stirring device to have transverse shearing force at the central part of the stirring pot, and further avoiding the clay adhesion and wall sticking phenomenon in the prior art when the clay is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a clay modified torque tester according to an embodiment of the present disclosure;

FIG. 2 is a schematic perspective view of a clay modified torque tester according to an embodiment of the present disclosure;

FIG. 3 is an enlarged view of portion A of FIG. 2, illustrating the structure of the stirring blade;

fig. 4 is a top view of a mixing pan and a mixing device of a clay modified torque tester according to an embodiment of the present disclosure.

Wherein, 1, a bearing platform; 2. a stirred pot; 3. a stirring device; 31. a stirring paddle; 311. a first blade section; 312. a second blade section; 313. a third blade section; 32. a stirring shaft; 4. a drive device; 41. a moving beam; 42. lifting a screw rod; 43. a first drive motor; 51. a first dynamic torque sensor; 52. a second dynamic torque sensor; 6. a connecting structure; 61. a rotating shaft; 62. a bearing seat; 7. a second drive motor; 8. a third drive motor; 91. a column; 92. a cross member.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Referring to fig. 1 and 4, the present embodiment provides a clay modified torque tester, which includes a bearing platform 1, a stirring pot 2 for containing sample soil and modifying agent, a stirring device 3, and a data acquisition system; the stirring pot 2 is rotationally connected to the bearing platform 1, the stirring device 3 is arranged above the stirring pot 2, the bearing platform 1 is also provided with a driving device 4 and a controller, the driving device 4 and the data acquisition system are respectively and electrically connected with the controller, and the driving device 4 is used for driving the stirring device 3 to reciprocate along the vertical direction so that the stirring device 3 can extend into the stirring pot 2 to stir sample soil; the rotation axis of the stirring device 3 is not coaxial with the rotation axis of the stirring pot 2, and the stirring diameter of the stirring blade 31 of the stirring device 3 is larger than the radius of the stirring pot 2, so that the geometric center of the stirring pot 2 is positioned in the stirring area of the stirring blade 31; the data acquisition system is used for acquiring torque signals of the stirring pot 2 and the stirring device 3, and the controller is used for generating a torque-time curve according to the torque signals acquired by the data acquisition system.

Here, the stirring diameter of the stirring blade 31 of the stirring device 3 refers to a diameter of a rotation locus of the stirring blade 31 when the stirring device 3 rotates about its rotation axis.

It can be understood that, the projection of the rotation axis of the stirring device 3 in the stirring pan 2 is located between the rotation axis of the stirring pan 2 and the inner wall of the stirring pan 2, because the maximum stirring diameter of the stirring device 3 is greater than the radius of the stirring pan 2, therefore, the stirring device 3 rotates in the stirring pan 2 and the stirring pan 2 rotates to jointly form a planetary stirring mode, and the geometric center of the stirring pan 2 is located in the stirring area of the stirring paddle 31, so that the geometric center, i.e. the central part, of the stirring pan 2 has a transverse shearing force, therefore, the clay improvement torque tester provided by the embodiment avoids the adhesion of the stirring clay and the stirring device 3 and the wall adhesion problem of the stirring clay in the prior art when clay improvement is performed, and has a simple structure, convenience in use and good user experience.

It should be noted that the stirring device 3 is moved back and forth in the vertical direction, that is, referring to fig. 1, the stirring device 3 is moved downward in the direction toward the stirring pot 2 so that the stirring device 3 extends into the stirring pot 2 to stir the sample soil and the modifying agent, and the stirring device 3 is moved upward in the direction away from the stirring pot 2 so that the stirring device 3 is withdrawn from the stirring pot 2 to stop stirring the sample soil and the modifying agent.

The bearing table 1 may be formed into any suitable structure, and has high mechanical strength and excellent bearing performance, and no limitation is imposed thereon.

In addition, as is readily understood by those skilled in the art, the modifying agent generally includes a foaming agent, a dispersing agent, bentonite, water, and the like, and the modifying agent is not single, but is compounded by using at least two of the foaming agent, the dispersing agent, the bentonite, the water, and the like according to the specific situation of the clay according to any suitable ratio, and can be arbitrarily selected according to the specific working condition of the clay, and is not limited too much.

When the shield tunneling clay modifier is used specifically, sample soil and the modifier of shield tunneling clay with certain mass are placed into the stirring pot 2, and the stirring device 3 and the stirring pot 2 are started to enable the stirring pot 2 and the stirring device 3 to start to rotate in different directions; then the driving device 4 is started, so that the driving device 4 drives the stirring device 3 to vertically move downwards to penetrate into the stirring pot 2 to stir the sample soil and the modifying agent; when the stirring device 3 stirs the sample soil and the modifying agent and the stirring pot 2 rotates, the data acquisition system can acquire torque signals of the stirring pot 2 and the stirring device 3, and the controller automatically generates a torque-time curve according to the torque signals, so that the torque-time curve is used for researching the torque-time change rule of the shield construction clay under the modifying agent, and the torque-time curve is used for guiding the modification of the clay stratum encountered in the field shield construction.

Further, the data acquisition system includes a first dynamic torque sensor 51 and a second dynamic torque sensor 52; the first dynamic torque sensor 51 is arranged on the stirring pot 2 and used for collecting a torque signal of the stirring pot 2 to generate a first torque signal, and the controller generates a first torque-time curve according to the first torque signal; the second dynamic torque sensor 52 is disposed on the stirring device 3 and is configured to collect a torque signal of the stirring device 3 to generate a second torque signal, and the controller generates a second torque-time curve according to the second torque signal.

Based on this, when the stirring device 3 extends into the stirring pot 2 to stir the sample soil and the stirring pot 2 rotates, the first dynamic torque sensor 51 can acquire torque signals of the stirring device 3 of clay under different modifying agents to generate a first torque-time signal, and the controller can automatically generate a first torque-time curve, namely a torque-time change curve of the stirring device 3, according to the first torque-time signal; the second dynamic torque sensor 52 can collect torque signals of the mixing pan 2 of clay under different modifying agents to generate a second torque-time signal, and the controller can automatically generate a second torque-time curve, namely a torque-time change curve of the mixing pan 2, according to the second torque-time signal. Through the comparative analysis of the torque-time change curve of the stirring device 3 and the torque-time change curve of the stirring pot 2, the torque change of the clay before and after the improvement of the corresponding modifier can be more accurately reflected, so that the clay soil improvement method is used for guiding the improvement of the clay stratum encountered in the field shield construction and preventing the difficult problem of mud cake formation.

The clay improvement torque tester provided by this embodiment can test the torque before and after the improvement of different clays, and analyze and compare the torque with time curves to obtain the torque with time curves of the shield construction clay under different modifiers, or the torque with time curves of different types of clays under the same modifier, so as to guide the clay of the clay stratum encountered in the field shield construction, provide a whole set of modifier for clay improvement for the construction unit, and further ensure the smooth proceeding of the shield construction.

Through the technical scheme, the clay improvement torque tester that this disclosure provided, through setting up plummer 1, the agitated kettle 2, agitating unit 3 and the data acquisition system that are used for holding appearance soil and modifier, wherein, agitated kettle 2 rotates to be connected on plummer 1, and agitating unit 3 sets up in agitated kettle 2's top, and agitating unit 3's axis of rotation and agitated kettle 2's axis of rotation disalignment, just agitating unit 3's the biggest stirring diameter is greater than agitated kettle 2's radius still is provided with controller and drive agitating unit 3 along vertical direction reciprocating motion's drive arrangement 4 on plummer 1. When the device is used specifically, a certain amount of sample soil and modifier for shield tunneling clay are placed in the stirring pot 2, the stirring device 3 is started, the stirring pot 2 starts to rotate, the driving device 4 drives the stirring device 3 to move downwards along the vertical direction, so that the stirring device 3 extends into the stirring pot 2 to stir the sample soil and the modifier, meanwhile, the data acquisition system acquires torque signals of the stirring pot 2 and the stirring device 3, the controller automatically generates a torque-time curve according to the torque signals acquired by the data acquisition system, and through analysis of the torque-time curve, the torque change of the clay in the front of and behind the modifier can be reflected more accurately, so that the improvement work of a clay stratum encountered in field shield construction can be guided conveniently. Because agitating unit 3's axis of rotation is not coaxial with the axis of rotation of stirred tank 2, just agitating unit 3's the biggest stirring diameter is greater than stirred tank 2's radius, consequently, agitating unit 3 has formed the planet stirring mode jointly when 2 rotations of stirred tank and stirred tank 2 rotate to make agitating unit 3 have horizontal shearing force at stirred tank 2's central point, and then avoided the clay adhesion among the prior art and the emergence of gluing the wall phenomenon when the clay is improved.

As an alternative embodiment, the stirring device 3 includes a stirring shaft 32 and a plurality of stirring blades 31; the top end of the stirring shaft 32 is fixed on the driving device 4, and a plurality of stirring blades 31 are arranged on the stirring shaft 32 at intervals along the circumferential direction of the stirring shaft 32.

It will be appreciated that the top end of the stirring axle 32 is fixed to the driving device 4, so that the stirring axle 32 and the stirring blades 31 fixed to the stirring axle 32 are moved in a direction toward or away from the stirring pan 2 by the driving device 4.

It should be noted that, when the stirring device 3 extends into the stirring pan 2, a certain safety distance exists between the bottom end of the stirring device 3 and the bottom wall of the stirring pan 2, so as to prevent the stirring device 3 from damaging the stirring pan 2.

According to some embodiments, the plurality of stirring blades may be an integral stirring head, which is mounted on the stirring shaft for use.

As an alternative embodiment, the stirring device includes a stirring shaft and a helical stirring blade fixed to the stirring shaft, and the diameter of the helical stirring blade is gradually reduced in the direction from top to bottom.

Further, referring to fig. 2 and 3, the stirring blade includes a first blade section 311, a second blade section 312, and a third blade section 313; first paddle section 311, second paddle section 312 set up on the (mixing) shaft along the axial interval of (mixing) shaft, and third paddle section 313 is the curve paddle of connecting between first paddle section 311 and second paddle section 312, and arbitrary two in first paddle section 311, second paddle section 312, the third paddle section 313 are not coplane to make a plurality of stirring paddle leaf constitute and form planet stirring paddle leaf, stir efficiently, the stirring degree is good.

According to some embodiments, the stirring device comprises a stirring shaft and a plurality of stirring blades; the top end of the stirring shaft is fixed on the driving device, and a plurality of stirring blades are arranged on the stirring shaft at intervals along the axial direction of the stirring shaft. Along the axial of (mixing) shaft, the diameter of the stirring paddle leaf of the top is great, the diameter of the stirring paddle leaf of the lowest extreme is great, be located the diameter of the stirring paddle leaf between the stirring paddle leaf of the top and the stirring paddle leaf of the lowest extreme, along from last linear reduction then linear increase to the orientation of extremely down, be equivalent to form the spiral stirring paddle leaf subassembly of two sets of relative settings on the (mixing) shaft, and the great stirring paddle leaf of diameter of two sets of spiral stirring paddle leaf subassemblies keeps away from each other, the less stirring paddle leaf of diameter of two sets of spiral stirring paddle leaf subassemblies is close to each other, based on this, planet stirring mode is constituteed with rotatory agitator kettle to a plurality of stirring paddle leaves, on the one hand, sample soil and the quick abundant homogeneous mixing of modifier have been guaranteed, stirring degree and stirring efficiency have been improved, on the other hand, accurate moment of torsion change law has been provided for the clay improvement.

In this embodiment, referring to fig. 4, at least part of the projection of one end of the stirring blade 31 away from the stirring shaft 32 in the stirring pan 2 is close to the inner wall of the stirring pan 2, and at least part of the projection of the other end of the stirring blade 31 away from the stirring shaft 32 in the stirring pan 2 covers the geometric center of the stirring pan 2, so that the stirring effect is better.

Exemplarily, when the internal diameter of stirred tank is 250mm, the wall thickness is 10mm, and stirring paddle's external diameter is 135mm, when the projection of agitating unit's pivot axis in the agitator and the distance L of the geometric centre of agitator were 55mm, at this moment, stirring paddle's one end outer wall was close to the inner wall of agitator, and stirring paddle's the other end covers the geometric centre of agitator, and stirring paddle and the planet stirring mode that the agitator constitutes are better, and the stirring degree of consistency is high.

It can be understood that the projection of the central line of the stirring shaft 32 in the stirring pan 2 is located between the central line of the stirring pan 2 and the inner wall of the stirring pan 2, so that when the stirring device 3 extends into the stirring pan 2, one end of the stirring blade 31, far from the stirring shaft 32, of the uppermost and/or lowermost stirring blade 31 is close to the inner wall of the stirring pan 2, and the other end of the stirring blade 31, far from the stirring shaft 32, of the uppermost and/or lowermost stirring blade 31 covers the geometric center of the stirring pan 2, and therefore, the stirring pan 2 and the stirring blade 31 jointly form a planetary stirring mode when rotating in different directions, so that the stirring blade 31 has transverse shearing forces at the center of the stirring pan 2 and at a position close to the inner wall of the stirring pan 2, and further, the phenomena of adhesion and wall sticking are avoided when clay is improved, and the stirring efficiency is good.

Further, referring to fig. 1, the driving device 4 includes a moving beam 41, two lifting screws 42, and a first driving motor 43 disposed in the plummer 1; two elevating screw 42 set up on plummer 1 relatively to all be connected with the output transmission of first driving motor 43, one end and one of two elevating screw 42 spiro union of walking beam 41, the other end and the another spiro union of two elevating screw 42 of walking beam 41, the top of agitating unit 3 rotates to be connected on the one side that is close to stirred tank 2 of walking beam 41.

It can be understood that two lifting screws 42 are oppositely arranged on the bearing platform 1, the movable beam 41 is arranged between the two lifting screws 42, and two ends of the movable beam 41 are respectively in threaded connection with the lifting screws 42.

During the concrete implementation, two synchronous syntropy rotations of lift lead screw 42 of first driving motor 43 drive, and lift lead screw 42's rotation drives walking beam 41 and reciprocates along vertical direction to make two lift lead screw 42's rotary motion transform into the linear motion of walking beam 41, simple structure realizes easily.

Further, in order to prevent the movable beam 41 from moving downward in a transitional manner, a limiting portion is disposed on one side of the at least one lifting screw 42, which is close to the plummer 1, and when the movable beam 41 moves downward and the movable beam 41 stops at the limiting portion, a safety distance is provided between the bottom end of the stirring device 3 and the bottom wall of the stirring pan 2, so that the movable beam 41 can be limited, and the phenomenon that the stirring pan 2 is damaged due to the contact between the stirring blades 31 and the bottom wall of the stirring pan 2 is avoided.

The limiting portion may be any suitable structure such as a stopper or a stopping flange provided on the lift screw 42.

In this embodiment, referring to fig. 1, two columns 91 are oppositely disposed on the bearing platform 1, and a cross beam 92 is disposed on top of the two columns 91, and the movable beam 41 is disposed in a space enclosed by the cross beam 92, the bearing platform 1, and the two columns 91, and is slidably connected to the two columns 91 respectively.

During the concrete implementation, the opposite face of two stands 91 is provided with a storage tank on being close to the one side of walking beam 41 promptly respectively, a lifting screw 42 sets up in the storage tank of a stand 91, another lifting screw 42 sets up in the storage tank of another stand 91, the both ends of walking beam 41 stretch into respectively to the storage tank in and all with stand 91 sliding connection, based on this, two stands 91 have the guide effect to the slip of walking beam 41, have certain guard action to lifting screw 42 simultaneously, make the removal of walking beam 41 more smooth and easy stable, can improve the reliability of the clay improvement torque tester that this embodiment provided to a certain extent.

According to some embodiments, two guide posts are oppositely arranged on the plummer 1, a mounting hole is formed in a position of the movable beam 41 corresponding to the guide posts, and two ends of the movable beam 41 are respectively sleeved on the guide posts, so that the guide posts can guide the movement of the movable beam 41, and the movable beam 41 can move more smoothly and stably.

It can be understood that the cross beam 92 has a limit stop function for the moving beam 41, so that the phenomenon that the moving beam 41 is separated from the lifting screw 42 due to upward transitional movement can be avoided, and the safety is good.

In the embodiment, a connecting structure 6 for installing the stirring pot 2 is arranged on the bearing platform 1; connection structure 6 includes pivot 61 and bears seat 62, and the one end of pivot 61 rotates with plummer 1 to be connected, and the other end fixedly connected with of pivot 61 bears seat 62, and the connection can be dismantled on bearing seat 62 to agitator kettle 2, and the convenience is dismantled agitator kettle 2 after the test and is got off and empty the appearance soil in agitator kettle 2.

Wherein, the stirring pot 2 can be connected on the bearing seat 62 through a plurality of bolts, and has simple structure and convenient assembly and disassembly.

Further, the clay modified torque tester further comprises a second driving motor 7 and/or a third driving motor 8; the second driving motor 7 is electrically connected with the controller and is used for driving the stirring device 3 to rotate, the third driving motor 8 is electrically connected with the controller and is used for driving the stirring pot 2 to rotate, and the rotating direction of the stirring device 3 is opposite to that of the stirring pot 2.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A clay improvement torque tester is characterized by comprising a bearing table (1), a stirring pot (2) for containing sample soil and an improver, a stirring device (3) and a data acquisition system;

the stirring pot (2) is rotationally connected to the bearing platform (1), and the stirring device (3) is arranged above the stirring pot (2);

the bearing table (1) is further provided with a driving device (4) and a controller, the driving device (4) and the data acquisition system are respectively electrically connected with the controller, and the driving device (4) is used for driving the stirring device (3) to reciprocate along the vertical direction so that the stirring device (3) can extend into the stirring pot (2) to stir the sample soil;

the rotating axis of the stirring device (3) is not coaxial with the rotating axis of the stirring pan (2), and the stirring diameter of the stirring blade (31) of the stirring device (3) is larger than the radius of the stirring pan (2), so that the geometric center of the stirring pan (2) is positioned in the stirring area of the stirring blade (31); the data acquisition system is used for acquiring torque signals of the stirring pot (2) and the stirring device (3), and the controller is used for generating a torque-time curve according to the torque signals acquired by the data acquisition system.

2. The clay modified torque tester as claimed in claim 1, wherein said stirring means (3) comprises a stirring shaft (32) and a plurality of said stirring blades (31);

the top end of the stirring shaft (32) is fixed on the driving device (4), and the stirring blades (31) are arranged on the stirring shaft (32) at intervals along the circumferential direction of the stirring shaft (32).

3. The clay modified torque tester as claimed in claim 2, wherein the stirring blade comprises a first blade section (311), a second blade section (312) and a third blade section (313);

the first paddle section (311) and the second paddle section (312) are arranged on the stirring shaft at intervals along the axial direction of the stirring shaft, the third paddle section (313) is a curved paddle connected between the first paddle section (311) and the second paddle section (312), and any two of the first paddle section (311), the second paddle section (312) and the third paddle section (313) are not coplanar.

4. The clay modified torque tester as claimed in claim 2, wherein the projection of the end of the stirring blade (31) far away from the stirring shaft (32) in the stirring pan (2) is close to the inner wall of the stirring pan (2), and the projection of the other end of the stirring blade (31) far away from the stirring shaft (32) in the stirring pan (2) covers the geometric center of the stirring pan (2).

5. The clay modified torque tester as claimed in claim 1, wherein the driving device (4) comprises a moving beam (41), two lifting screws (42) and a first driving motor (43) arranged in the bearing table (1);

two elevating screw (42) set up relatively on plummer (1), and all with the output transmission of first driving motor (43) is connected, the one end and two of walking beam (41) one among elevating screw (42) the spiro union, the other end and two of walking beam (41) another person's spiro union in elevating screw (42), the top of agitating unit (3) is rotated and is connected being close to of walking beam (41) on the one side of agitated kettle (2).

6. The clay-modified torque tester as claimed in claim 5, wherein at least one of the elevating screws (42) is provided with a position-limiting portion on a side thereof close to the platform (1), and when the moving beam (41) stops on the position-limiting portion, a safety distance is provided between the bottom end of the stirring device (3) and the bottom wall of the stirring pot (2).

7. The clay modified torque tester as claimed in claim 5, wherein two columns (91) are oppositely disposed on the bearing platform (1) and a cross beam (92) is disposed on top of the two columns (91), the movable beam (41) is disposed in a space enclosed by the cross beam (92), the bearing platform (1) and the two columns (91) and is slidably connected to the two columns (91) respectively.

8. The clay modified torque tester as claimed in claim 1, wherein the data acquisition system comprises a first dynamic torque sensor (51) and a second dynamic torque sensor (52);

the first dynamic torque sensor (51) is arranged on the stirring pot (2) and is used for collecting a torque signal of the stirring pot (2) to generate a first torque signal, and the controller generates a first torque-time curve according to the first torque signal;

the second dynamic torque sensor (52) is arranged on the stirring device (3) and is used for collecting a torque signal of the stirring device (3) to generate a second torque signal, and the controller generates a second torque-time curve according to the second torque signal.

9. The clay modified torque tester as claimed in any one of claims 1 to 8, wherein a connecting structure (6) for mounting the stirring pan (2) is provided on the bearing table (1);

connection structure (6) are including pivot (61) and bear seat (62), the one end of pivot (61) with plummer (1) rotates and connects, the other end fixedly connected with of pivot (61) bear seat (62), agitator kettle (2) can be dismantled to be connected bear on seat (62).

10. The clay-modified torque tester according to any of claims 1 to 8, further comprising a second drive motor (7) and/or a third drive motor (8);

the second driving motor (7) is electrically connected with the controller and used for driving the stirring device (3) to rotate, the third driving motor (8) is electrically connected with the controller and used for driving the stirring pot (2) to rotate, and the rotating direction of the stirring device (3) is opposite to that of the stirring pot (2).

Images