CN117907049A - Sample preparation device for inorganic binder stabilizing material and application method - Google Patents

Abstract

The invention is suitable for the technical field of highway engineering, and provides a sample preparation device of an inorganic binder stabilizing material and a use method thereof, wherein the sample preparation device comprises a reaction frame and a sample preparation die arranged in the reaction frame; the reaction frame comprises a fixed frame; an upper baffle and a lower baffle are fixedly connected between the inner walls of the fixed frames in sequence from top to bottom; guide grooves are symmetrically formed in the side faces of the fixed frame; the side surface of the fixed frame is fixedly penetrated by a hydraulic cylinder; guide pieces are slidably arranged in the two guide grooves; and loading pieces matched with the guide pieces are slidably arranged in the two sliding holes. The device drives the guide piece to move outwards through starting the hydraulic cylinder, realizes the linkage action of the two loading pieces through the arrangement of each guide part, realizes the bidirectional synchronous compaction of the soil sample through the two loading pieces, ensures the uniformity of the soil sample and the flatness of the upper surface and the lower surface, controls the compactness of the soil sample, avoids the phenomenon of 'upper tight and lower loose', and enables the stress path born by the simulated soil sample to be close to the real stress path.

Description

Sample preparation device for inorganic binder stabilizing material and application method

Technical Field

The invention relates to the technical field of highway engineering, in particular to a sample preparation device of an inorganic binder stabilizing material and a use method thereof.

Background

For the inorganic binder stabilizing material adopted in highway engineering, the strength and deformation performance of the inorganic binder stabilizing material must be tested through a test, and the sample preparation method of the stabilizing material is an essential link before the test.

Through retrieving, the system appearance device of inorganic binder stable material of publication number CN209979330U, including the mould, reaction frame and pressure device, the mould includes cylindric examination mould, examination mould is formed by the concatenation of two semicircle cylindric subassemblies, two splice punishment do not are articulated connection and detachable bolted connection, the contact surface of two laminating of every concatenation department is convex surface and concave surface respectively, reaction frame includes the roof, the bottom plate, the medium plate, spring and two stand that parallel interval set up, two stand pass the medium plate perpendicularly, the medium plate is along the stand is movable, spring one end is fixed with stand bottom relatively, the lower surface of other end swing joint medium plate, examination mould is located the medium plate below, the medium plate is with pressure device's pressure transmission to the soil sample in the examination mould on.

However, the sample preparation device applies pressure to the pressing block through the middle plate, the pressing block descends to tightly squeeze the soil sample, the sample preparation mode is difficult to accurately control the density of the soil sample, the uniformity is low, the phenomenon of 'tight upper and lower looseness' occurs, the back pressure and confining pressure born by the upper end and the lower end of the soil sample during sample preparation cannot be controlled, and the real stress path born by the soil sample is difficult to simulate.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the sample preparation device and the application method of the machine binder stabilizing material, which are used for driving the guide parts to move outwards through starting the hydraulic cylinder, realizing the linkage action of the two loading parts, realizing the bidirectional synchronous compaction of the soil sample through the two loading parts, ensuring the uniformity of the soil sample and the flatness of the upper surface and the lower surface, controlling the compactness of the soil sample, avoiding the phenomenon of 'up-close-down loosening', controlling the back pressure and the confining pressure born by the upper end and the lower end of the soil sample to be consistent when preparing the sample, and enabling the stress path born by the simulated soil sample to be close to the real stress path.

In order to achieve the above purpose, the present invention provides the following technical solutions:

A sample preparation device of an inorganic binder stabilizing material comprises a reaction frame and a sample preparation die arranged in the reaction frame; the reaction frame comprises a fixed frame; an upper baffle and a lower baffle are sequentially and fixedly connected between the inner walls of the fixed frames from top to bottom; guide grooves are symmetrically formed in the side faces of the fixed frame; the side surface of the fixed frame is fixedly penetrated by a hydraulic cylinder; a guide piece is slidably arranged in the two guide grooves; the telescopic end of the hydraulic cylinder is fixedly connected with the guide piece through a fastening bolt; the surfaces of the upper baffle and the lower baffle are provided with coaxially arranged sliding holes; and loading parts matched with the guide parts are slidably arranged in the two sliding holes.

The invention is further provided with: the guide comprises a riser; the side surface of the vertical plate is provided with a positioning block; the telescopic end of the hydraulic cylinder is fixedly arranged on the positioning block through a fastening bolt; two groups of guide strips which are respectively arranged in the corresponding guide grooves in a sliding way are symmetrically arranged on the side surfaces of the vertical plates; the end part of the guide plate is fixedly connected with a U-shaped plate; the bottom of the U-shaped plate is symmetrically provided with sliding blocks; the surface of the upper baffle plate and the bottom surface of the lower baffle plate are symmetrically provided with sliding grooves which are in sliding fit with the corresponding sliding blocks.

The invention is further provided with: the inner top surface of the U-shaped plate positioned above is sequentially provided with a first upper guide part, a second upper guide part and a third upper guide part; the first upper guide part and the third upper guide part are downward arranged at a certain inclination angle; the second upper guide part and the upper baffle are arranged in parallel.

The invention is further provided with: the inner bottom surface of the U-shaped plate positioned below is sequentially provided with a first lower guide part, a second lower guide part and a third lower guide part; the first lower guide part and the third lower guide part are upwards arranged at a certain inclination angle; the second lower guide part and the lower baffle are arranged in parallel.

The invention is further provided with: the loading piece comprises a sliding rod which is arranged in the sliding hole in a sliding way; one end of the sliding rod is provided with a first guide ball, and the other end of the sliding rod is provided with a pressing disc; a reset spring is connected between the two first guide balls and the surface of the upper baffle plate and the bottom surface of the lower baffle plate respectively; the bottom surface of the pressing disc is attached with first filter paper.

The invention is further provided with: the bottom of the hydraulic cylinder is provided with a base, and the peripheral side surface of the hydraulic cylinder is sequentially fixed with a first fixed plate, a second fixed plate and a third fixed plate; a plurality of fixing rods are arranged between the base and the first fixing plate, and between the base and the second fixing plate as well as between the base and the third fixing plate; the second fixing plate and the third fixing plate are fixedly arranged on the side face of the fixing frame through fastening bolts; a pawl is rotatably arranged on the side surface of the base; the surface of the lower baffle is fixedly connected with a fixing piece meshed and matched with the pawl through a fastening bolt; the fixing piece comprises two supporting legs which are oppositely arranged; the supporting legs are fixedly arranged on the lower baffle through fastening bolts.

The invention is further provided with: a fixing ring is fixedly connected between the two supporting legs; the peripheral side surface of the fixed ring is provided with an annular groove; a plurality of connecting rods are uniformly arranged in the annular groove in a sliding manner; a rotating ring which is arranged coaxially with the fixed ring is fixed between the end parts of the connecting rods; the surface of the rotating ring is provided with an end face ratchet wheel which is meshed and matched with the pawl.

The invention is further provided with: a guide plate is arranged between the inner peripheral side surface of the rotating ring and the corresponding connecting rod; guide posts uniformly penetrate through the peripheral side surface of the fixed ring and are slidably arranged; one end of the guide post is provided with a second guide ball which is matched with the guide plate, and the other end of the guide post is provided with an arc-shaped pressing plate; and a connecting spring sleeved on the guide post is connected between the arc-shaped pressing plate and the inner peripheral side surface of the fixed ring.

The invention is further provided with: the sample preparation mould comprises three mutually spliced valves; the inner peripheral side surfaces of the three valves are attached with second filter paper; arc-shaped clamping blocks are symmetrically arranged on the peripheral side surfaces of the three valves close to the end parts of the peripheral side surfaces of the three valves; the three valve sleeves positioned between the two arc-shaped clamping blocks are provided with hoops; the peripheral side surfaces of the three valves are provided with slots which are in plug-in fit with the arc-shaped pressing plates; an annular seat for supporting three valves is arranged between the two supporting legs; and fixing strips are fixedly connected between the annular seat and the two supporting legs.

The application method of the sample preparation device of the inorganic binder stabilizing material comprises the following steps:

T1, fixing and splicing the three valves together through the anchor ear, attaching second filter paper to the three valves, placing the spliced three valves on the surface of the annular seat, and attaching two first filter papers to the bottom surface of the pressing disc respectively;

T2, rotating the rotating ring anticlockwise to drive each group of guide plates to rotate anticlockwise, and matching with the connecting springs to extrude the corresponding second guide balls, so that each group of arc-shaped pressing plates are driven to be inserted into the corresponding slots, and the arc-shaped pressing plates of each group are prevented from rotating reversely through the arrangement of the end face ratchet wheels and the pawls, so that stable clamping of the spliced three valves is realized, and the coaxial arrangement of the three valves and the two pressing disks is ensured;

T3, starting the hydraulic cylinder to drive the guide piece to slide outwards, enabling the first lower guide part to contact with the first guide ball at the lower part, and extruding the corresponding first guide ball in the sliding process, so as to drive the corresponding pressing disc to move upwards and be inserted into the three valves, wherein at the moment, the loading piece at the upper part is kept motionless; stopping the hydraulic cylinder, calculating the early consolidation pressure and the time required by compaction of the soil body according to the stress history of the soil sample in the foundation, calculating the mass of the required soil sample according to the density and the size of the prepared soil sample, weighing and pouring the soil sample into the three valves at one time;

T4, continuously starting the hydraulic cylinder, wherein the first upper guide part extrudes the upper loading part, so that the guide part at the upper part descends and is inserted into the three valves, at the moment, the lower loading part is kept motionless, the hydraulic cylinder is continuously started, so that the two loading parts are respectively arranged on the corresponding third upper guide part and third lower guide part, and the hydraulic cylinder is continuously started to drive the two loading parts to synchronously compact soil samples in the three valves;

and T5, after sample preparation is completed, starting the hydraulic cylinder to reversely retract the hydraulic cylinder, so that the upper loading part and the lower loading part are sequentially separated from the three valves, removing the anchor ear, stirring the pawl to separate the anchor ear from the end ratchet, separating the arc-shaped pressing plate from the slot under the elastic reset force of each group of reset springs, removing the three valves, taking out the whole soil sample from the annular seat, and stripping the second filter paper of the membrane to obtain the complete soil sample.

The invention has the advantages that:

1. According to the invention, the rotating ring is rotated anticlockwise to drive each group of guide plates to rotate anticlockwise, the corresponding second guide balls are extruded by the connecting springs, so that each group of arc-shaped pressing plates are driven to be inserted into the corresponding slots, and the arc-shaped pressing plates are prevented from rotating reversely by the arrangement of the end face ratchet wheels and the pawls, so that the stable clamping of the spliced three valves is realized, the coaxial arrangement of the three valves and the two pressing disks is ensured, and the sample preparation stability is improved.

2. According to the invention, the guide parts are driven to move outwards by starting the hydraulic cylinder, the linkage action of the two loading parts is realized by arranging the guide parts, the two-way synchronous compaction of the soil sample is realized by the two loading parts, the uniformity of the soil sample and the flatness of the upper surface and the lower surface are ensured, the compactness of the soil sample is controlled, the phenomenon of 'up-down loose' is avoided, the back pressure and the confining pressure borne by the upper end and the lower end of the soil sample are consistent during sample preparation are controlled, and the stress path borne by the simulated soil sample is close to the real stress path.

3. According to the invention, the vertical stress and stress history of the soil sample in the foundation are simulated during sample preparation, the second filter paper is arranged on the inner wall of the three valves, and the first filter paper is attached to the two pressing disks, so that the problem that the triaxial soil sample is easy to fail in demoulding is solved.

Drawings

FIG. 1 is a schematic diagram of a sample preparation device for an inorganic binder stabilizing material according to the present invention.

Fig. 2 is an enlarged view of area a of fig. 1 in accordance with the present invention.

Fig. 3 is an enlarged view of region B of fig. 1 in accordance with the present invention.

Fig. 4 is a schematic structural view of the reaction frame of the present invention.

Fig. 5 is a schematic structural view of a sample preparation mold according to the present invention.

Fig. 6 is a schematic structural view of the guide of the present invention.

Fig. 7 is a schematic diagram of the structure of the guide of the present invention from a front view.

Fig. 8 is a schematic structural view of the loader of the present invention.

Fig. 9 is a schematic structural view of a fixing member according to the present invention.

FIG. 10 is a schematic diagram of the soil sample loading process according to the present invention.

In the figure: 1. a reaction frame; 2. preparing a sample mold; 3. a fixed frame; 4. an upper baffle; 5. a lower baffle; 6. a guide groove; 7. a hydraulic cylinder; 8. a guide member; 9. a slide hole; 10. a loading member; 11. a riser; 12. a positioning block; 13. a guide bar; 14. a U-shaped plate; 15. a slide block; 16. a chute; 17. a first upper guide part; 18. a second upper guide part; 19. a third upper guide part; 20. a first lower guide portion; 21. a second lower guide part; 22. a third lower guide part; 23. a slide bar; 24. a first guide ball; 25. a pressing disc; 26. a return spring; 27. a first filter paper; 28. a base; 29. a first fixing plate; 30. a second fixing plate; 31. a third fixing plate; 32. a fixed rod; 33. a pawl; 34. a fixing member; 35. support legs; 36. a fixing ring; 37. an annular groove; 38. a connecting rod; 39. a rotating ring; 40. end face ratchet wheels; 41. a guide post; 42. a second guide ball; 43. an arc-shaped pressing plate; 44. a connecting spring; 45. a three valve; 46. a second filter paper; 47. an arc-shaped clamping block; 48. a hoop; 49. a slot; 50. an annular seat; 51. a fixing strip; 52. and a guide plate.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present invention, unless otherwise indicated, the terms "upper" and "lower" are used generally with respect to the directions shown in the drawings, or with respect to the vertical, vertical or gravitational directions; also, for ease of understanding and description, "left, right" is generally directed to the left, right as shown in the drawings; "inner and outer" refer to inner and outer relative to the outline of the components themselves, but the above-described orientation terms are not intended to limit the present invention.

Example 1

Referring to fig. 1-10, the present invention provides the following technical solutions:

The sample preparation device of the inorganic binder stabilizing material comprises a reaction frame 1 and a sample preparation die 2 arranged in the reaction frame 1; the reaction frame 1 comprises a fixed frame 3; an upper baffle 4 and a lower baffle 5 are fixedly connected between the inner walls of the fixed frames 3 in sequence from top to bottom; guide grooves 6 are symmetrically formed in the side face of the fixed frame 3; the side surface of the fixed frame 3 is fixedly penetrated by a hydraulic cylinder 7; a guide piece 8 is slidably arranged in the two guide grooves 6; the telescopic end of the hydraulic cylinder 7 is fixedly connected with the guide piece 8 through a fastening bolt; the surfaces of the upper baffle plate 4 and the lower baffle plate 5 are provided with sliding holes 9 which are coaxially arranged; the two slide holes 9 are provided with loading pieces 10 which are matched with the guide pieces 8 in a sliding way.

The first working principle of this embodiment: the hydraulic cylinder 7 is started to drive the guide piece 8 to move outwards, the linkage action of the two loading pieces 10 is realized through the arrangement of the guide parts, the two-way synchronous compaction of the soil sample is realized through the two loading pieces 10, the uniformity of the soil sample and the flatness of the upper surface and the lower surface are ensured, the compactness of the soil sample is controlled, the phenomenon of 'tight upper and lower looseness' is avoided, the back pressure and the confining pressure borne by the upper end and the lower end of the soil sample are consistent during sample preparation are controlled, and the stress path borne by the simulated soil sample is close to the real stress path.

Example two

Referring to fig. 1 to 10, the second embodiment is modified from the first embodiment in that the guide member 8 includes a riser 11; the side surface of the vertical plate 11 is provided with a positioning block 12; the telescopic end of the hydraulic cylinder 7 is fixedly arranged on the positioning block 12 through a fastening bolt; two groups of guide strips 13 which are respectively arranged in the corresponding guide grooves 6 in a sliding way are symmetrically arranged on the side surfaces of the vertical plates 11; the end part of the guide plate 13 is fixedly connected with a U-shaped plate 14; the bottom of the U-shaped plate 14 is symmetrically provided with sliding blocks 15; the surfaces of the upper baffle plates 4 and the bottom surfaces of the lower baffle plates 5 are symmetrically provided with sliding grooves 16 which are in sliding fit with corresponding sliding blocks 15; the inner top surface of the U-shaped plate 14 positioned above is provided with a first upper guide part 17, a second upper guide part 18 and a third upper guide part 19 in sequence; the first upper guide part 17 and the third upper guide part 19 are all arranged downwards at a certain inclination angle; the second upper guide part 18 and the upper baffle plate 4 are arranged in parallel; the inner bottom surface of the U-shaped plate 14 positioned below is provided with a first lower guide part 20, a second lower guide part 21 and a third lower guide part 22 in sequence; the first lower guide part 20 and the third lower guide part 22 are all arranged upwards at a certain inclination angle; the second lower guide portion 21 and the lower baffle 5 are disposed parallel to each other.

The second working principle of this embodiment: the inclination angles of the first upper guide part 17 and the first lower guide part 20 are consistent, and the slope lengths of the first upper guide part and the first lower guide part are the same; the horizontal distance of the second lower guide portion 21 is the same as the sum of the horizontal distances of the second upper guide portion 17 and the third upper guide portion 18; the inclination angles of the third upper guide part 19 and the third lower guide part 22 are consistent, and the slope lengths of the third upper guide part and the third lower guide part are the same; the hydraulic cylinder 7 is started to drive the guide piece 8 to slide outwards, the first lower guide part 20 is firstly contacted with the first guide ball 24 at the lower part, and the corresponding first guide ball 24 is extruded in the sliding process, so that the corresponding pressing disc 25 is driven to move upwards and be inserted into the three valves 45, and at the moment, the upper loading piece 10 is kept motionless; stopping the hydraulic cylinder 7, calculating the early consolidation pressure and the time required by compaction of the soil body according to the stress history of the soil sample in the foundation, calculating the mass of the required soil sample according to the density and the size of the prepared soil sample, weighing and pouring the soil sample into the three valves 45 at one time; the hydraulic cylinder 7 is continuously started, the first upper guide part 17 presses the upper loading part 10, so that the upper guide part 10 descends and is inserted into the three valves 45, at the moment, the lower loading part 10 is kept motionless, the hydraulic cylinder 7 is continuously started, the two loading parts 10 are respectively arranged on the corresponding third upper guide part 19 and third lower guide part 22, and the hydraulic cylinder 7 is continuously started to drive the two loading parts 10 to synchronously compact soil samples in the three valves 45.

Example III

Referring to fig. 1 to 10, the third embodiment is modified from the second embodiment in that the loader 10 includes a slide bar 23 slidably disposed in a slide hole 9; one end of the slide bar 23 is provided with a first guide ball 24, and the other end thereof is provided with a pressing disc 25; a return spring 26 is connected between the two first guide balls 24 and the surface of the upper baffle plate 4 and the bottom surface of the lower baffle plate 5 respectively; the bottom surface of the pressing disc 25 is attached with a first filter paper 27; a base 28 is arranged at the bottom of the hydraulic cylinder 7, and a first fixing plate 29, a second fixing plate 30 and a third fixing plate 31 are sequentially fixed on the peripheral side surface of the base; a plurality of fixing rods 32 are arranged between the base 28 and the first fixing plate 29, and between the second fixing plate 30 and the third fixing plate 31; the second fixing plate 30 and the third fixing plate 31 are fixedly arranged on the side surface of the fixing frame 3 through fastening bolts; a pawl 33 is rotatably arranged on the side surface of the base 28; the surface of the lower baffle plate 5 is fixedly connected with a fixing piece 34 engaged and matched with the pawl 33 through a fastening bolt; the fixing piece 34 comprises two opposite supporting legs 35; the supporting legs 35 are fixedly arranged on the lower baffle plate 5 through fastening bolts; a fixed ring 36 is fixedly connected between the two supporting legs 35; an annular groove 37 is formed in the peripheral side face of the fixed ring 36; a plurality of connecting rods 38 are uniformly arranged in the annular groove 37 in a sliding manner; a rotating ring 39 arranged coaxially with the fixed ring 36 is fixed between the ends of each connecting rod 38; the surface of the rotating ring 39 is provided with an end ratchet 40 which is meshed with the pawl 33; a guide plate 52 is arranged between the inner peripheral side surface of the rotating ring 39 and the corresponding connecting rod 38; guide posts 41 are uniformly arranged on the side surface of the periphery of the fixed ring 36 in a penetrating and sliding manner; one end of the guide column 41 is provided with a second guide ball 42 which is matched with the guide plate 13, and the other end of the guide column is provided with an arc-shaped pressing plate 43; a connecting spring 44 sleeved on the guide post 41 is connected between the arc-shaped pressing plate 43 and the inner peripheral side surface of the fixed ring 36; the sample preparation mould 2 comprises three valves 45 which are mutually spliced; a second filter paper 46 is attached to the inner peripheral side surface of the three valves 45; arc-shaped clamping blocks 47 are symmetrically arranged on the peripheral side surfaces of the three valves 45 close to the end parts of the three valves; the three valves 45 positioned between the two arc-shaped clamping blocks 47 are sleeved with hoops 48; the peripheral side surface of the three valves 45 is provided with a slot 49 which is in plug-in fit with the arc-shaped pressing plate 43; an annular seat 50 for supporting the three valves 45 is arranged between the two support legs 35; a fixing strip 51 is fixedly connected between the annular seat 50 and the two supporting legs 35.

The third working principle of the embodiment: the three valves 45 are fixed and spliced together through the anchor ear 48, the second filter paper 46 is attached to the three valves 45, the spliced three valves 45 are placed on the surface of the annular seat 50, and the two first filter papers 46 are attached to the bottom surface of the pressing disc 25 respectively; the rotating ring 39 is rotated anticlockwise, the guide plates 52 of each group are driven to rotate anticlockwise, the corresponding second guide balls 42 are extruded by the matched connecting springs 44, each group of arc pressing plates 43 are driven to be inserted into the corresponding slots 49, and the arc pressing plates 43 of each group are prevented from rotating reversely through the arrangement of the end face ratchet wheels 40 and the pawls 33, so that stable clamping of the spliced three valves 45 is realized, and the coaxial arrangement of the three valves 45 and the two pressing disks 25 is ensured.

The application method of the sample preparation device of the inorganic binder stabilizing material comprises the following steps:

T1, fixing and splicing the three valves 45 together through the anchor ear 48, attaching the second filter paper 46 to the three valves 45, placing the spliced three valves 45 on the surface of the annular seat 50, and attaching the two first filter papers 46 to the bottom surface of the pressing disc 25 respectively;

T2, rotating the rotating ring 39 anticlockwise, driving each group of guide plates 52 to rotate anticlockwise, matching the connecting springs 44 to squeeze the corresponding second guide balls 42, driving each group of arc pressing plates 43 to be inserted into the corresponding slots 49, and preventing each group of arc pressing plates 43 from rotating reversely through the arrangement of the end face ratchet wheels 40 and the pawls 33, so that stable clamping of the spliced three valves 45 is realized, and the coaxial arrangement of the three valves 45 and the two pressing disks 25 is ensured;

T3, starting the hydraulic cylinder 7 to drive the guide piece 8 to slide outwards, wherein the first lower guide part 20 is firstly contacted with the first guide ball 24 at the lower part, and the corresponding first guide ball 24 is extruded in the sliding process, so that the corresponding pressing disc 25 is driven to move upwards and be inserted into the three valves 45, and at the moment, the upper loading piece 10 is kept motionless; stopping the hydraulic cylinder 7, calculating the early consolidation pressure and the time required by compaction of the soil body according to the stress history of the soil sample in the foundation, calculating the mass of the required soil sample according to the density and the size of the prepared soil sample, weighing and pouring the soil sample into the three valves 45 at one time;

t4, continuously starting the hydraulic cylinder 7, wherein the first upper guide part 17 presses the upper loading part 10, so that the upper guide part 10 descends and is inserted into the three valves 45, at the moment, the lower loading part 10 is kept motionless, the hydraulic cylinder 7 is continuously started, so that the two loading parts 10 are respectively arranged on the corresponding third upper guide part 19 and third lower guide part 22, and the hydraulic cylinder 7 is continuously started to drive the two loading parts 10 to synchronously compact soil samples in the three valves 45;

And T5, after sample preparation is completed, starting the hydraulic cylinder 7 to retract the hydraulic cylinder reversely, so that the upper loading piece 10 and the lower loading piece 10 are sequentially separated from the three valves 45, removing the anchor ear 48, poking the pawl 33 to separate the pawl from the end ratchet 40, separating the arc-shaped pressing plate 43 from the slot 49 under the elastic reset force of each group of reset springs 41, removing the three valves 45, taking out the whole soil sample from the annular seat 50, and peeling the second filter paper 46 to obtain the prepared complete soil sample.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (10)

1. A sample preparation device of an inorganic binder stabilizing material comprises a reaction frame (1) and a sample preparation die (2) arranged in the reaction frame (1); the method is characterized in that:

The reaction frame (1) comprises a fixed frame (3); an upper baffle (4) and a lower baffle (5) are fixedly connected between the inner walls of the fixed frame (3) from top to bottom in sequence; guide grooves (6) are symmetrically formed in the side faces of the fixed frame (3); a hydraulic cylinder (7) is fixedly penetrated through the side surface of the fixed frame (3);

A guide piece (8) is slidably arranged in the two guide grooves (6); the telescopic end of the hydraulic cylinder (7) is fixedly connected with the guide piece (8) through a fastening bolt; the surfaces of the upper baffle plate (4) and the lower baffle plate (5) are provided with sliding holes (9) coaxially arranged; and loading pieces (10) matched with the guide pieces (8) are slidably arranged in the two sliding holes (9).

2. The sample preparation device for an inorganic binder stabilization material according to claim 1, wherein: the guide (8) comprises a riser (11); the side surface of the vertical plate (11) is provided with a positioning block (12); the telescopic end of the hydraulic cylinder (7) is fixedly arranged on the positioning block (12) through a fastening bolt; two groups of guide strips (13) which are respectively arranged in the corresponding guide grooves (6) in a sliding way are symmetrically arranged on the side surfaces of the vertical plates (11);

the end part of the guide plate (13) is fixedly connected with a U-shaped plate (14); sliding blocks (15) are symmetrically arranged at the bottom of the U-shaped plate (14); the surfaces of the upper baffle plate (4) and the bottom surface of the lower baffle plate (5) are symmetrically provided with sliding grooves (16) which are in sliding fit with corresponding sliding blocks (15).

3. The sample preparation device for an inorganic binder stabilization material according to claim 2, wherein: the inner top surface of the U-shaped plate (14) positioned above is sequentially provided with a first upper guide part (17), a second upper guide part (18) and a third upper guide part (19); the first upper guide part (17) and the third upper guide part (19) are all arranged downwards at a certain inclination angle; the second upper guide part (18) and the upper baffle plate (4) are arranged in parallel.

4. A sample preparation device for an inorganic binder stabilizing material according to claim 3, wherein: the inner bottom surface of the U-shaped plate (14) positioned below is sequentially provided with a first lower guide part (20), a second lower guide part (21) and a third lower guide part (22); the first lower guide part (20) and the third lower guide part (22) are arranged upwards at a certain inclination angle; the second lower guide part (21) and the lower baffle plate (5) are arranged in parallel.

5. The sample preparation device for an inorganic binder stabilizing material according to claim 4, wherein: the loading piece (10) comprises a sliding rod (23) which is arranged in the sliding hole (9) in a sliding way; one end of the sliding rod (23) is provided with a first guide ball (24), and the other end of the sliding rod is provided with a pressing disc (25); a return spring (26) is connected between the two first guide balls (24) and the surfaces of the upper baffle plate (4) and the bottom surface of the lower baffle plate (5) respectively; the bottom surface of the pressing disc (25) is attached with first filter paper (27).

6. The sample preparation device for an inorganic binder stabilizing material according to claim 5, wherein: a base (28) is arranged at the bottom of the hydraulic cylinder (7), and a first fixing plate (29), a second fixing plate (30) and a third fixing plate (31) are sequentially fixed on the peripheral side surface of the base; a plurality of fixing rods (32) are arranged between the base (28) and the first fixing plate (29) and between the second fixing plate (30) and the third fixing plate (31); the second fixing plate (30) and the third fixing plate (31) are fixedly arranged on the side face of the fixing frame (3) through fastening bolts; a pawl (33) is rotatably arranged on the side surface of the base (28);

The surface of the lower baffle plate (5) is fixedly connected with a fixing piece (34) engaged and matched with the pawl (33) through a fastening bolt; the fixing piece (34) comprises two opposite supporting legs (35); the supporting legs (35) are fixedly arranged on the lower baffle plate (5) through fastening bolts.

7. The sample preparation device for an inorganic binder stabilizing material according to claim 6, wherein: a fixed ring (36) is fixedly connected between the two supporting legs (35); an annular groove (37) is formed in the peripheral side face of the fixed ring (36); a plurality of connecting rods (38) are uniformly arranged in the annular groove (37) in a sliding manner; a rotating ring (39) which is arranged coaxially with the fixed ring (36) is fixed between the end parts of the connecting rods (38); the surface of the rotating ring (39) is provided with an end surface ratchet wheel (40) which is meshed and matched with the pawl (33).

8. The sample preparation device for an inorganic binder stabilizing material according to claim 7, wherein: a guide plate (52) is arranged between the inner peripheral side surface of the rotating ring (39) and the corresponding connecting rod (38); guide posts (41) uniformly penetrate through the peripheral side surface of the fixed ring (36) in a sliding manner; one end of the guide column (41) is provided with a second guide ball (42) which is matched with the guide plate (13), and the other end of the guide column is provided with an arc-shaped pressing plate (43); a connecting spring (44) sleeved on the guide post (41) is connected between the arc-shaped pressing plate (43) and the inner peripheral side surface of the fixed ring (36).

9. The sample preparation device for an inorganic binder stabilizing material according to claim 8, wherein: the sample preparation mould (2) comprises three mutually spliced valves (45); a second filter paper (46) is attached to the inner peripheral side surface of the three valves (45); arc-shaped clamping blocks (47) are symmetrically arranged on the peripheral side surfaces of the three valves (45) close to the end parts of the three valves; the three valves (45) positioned between the two arc-shaped clamping blocks (47) are sleeved with hoops (48); the peripheral side surfaces of the three valves (45) are provided with slots (49) which are in plug-in fit with the arc-shaped pressing plates (43); an annular seat (50) for supporting the three valves (45) is arranged between the two supporting legs (35); fixing strips (51) are fixedly connected between the annular seat (50) and the two supporting legs (35).

10. The method of using a sample preparation device for an inorganic binder stabilization material according to any one of claims 1 to 9, comprising the steps of:

T1, fixing and splicing the three valves (45) together through the anchor ear (48), attaching the second filter paper (46) to the three valves (45), placing the spliced three valves (45) on the surface of the annular seat (50), and attaching the two first filter papers (46) to the bottom surface of the pressing disc (25) respectively;

T2, anticlockwise rotating the rotating ring (39), driving each group of guide plates (52) to anticlockwise rotate, and matching with the connecting springs (44) to extrude the corresponding second guide balls (42), so as to drive each group of arc pressing plates (43) to be inserted into the corresponding slots (49), and preventing each group of arc pressing plates (43) from reversely rotating through the arrangement of the end face ratchet wheel (40) and the pawl (33), so that stable clamping of the spliced three valves (45) is realized, and the coaxial arrangement of the three valves (45) and the two pressing disks (25) is ensured;

T3, starting the hydraulic cylinder (7) to drive the guide piece (8) to slide outwards, enabling the first lower guide part (20) to contact with the first guide ball (24) at the lower part, and extruding the corresponding first guide ball (24) in the sliding process, so as to drive the corresponding pressing disc (25) to move upwards and be inserted into the three valves (45), wherein the upper loading piece (10) is kept motionless; stopping the hydraulic cylinder (7), calculating the early consolidation pressure and the time required by compaction of the soil body according to the stress history of the soil sample in the foundation, calculating the mass of the required soil sample according to the density and the size of the prepared soil sample, weighing and pouring the soil sample into the three valves (45) at one time;

T4, continuously starting the hydraulic cylinder (7), wherein the first upper guide part (17) extrudes the upper loading part (10) so that the upper guide part (10) descends and is inserted into the three valves (45), at the moment, the lower loading part (10) keeps still, the hydraulic cylinder (7) is continuously started, the two loading parts (10) are respectively arranged on the corresponding third upper guide part (19) and the third lower guide part (22), and the hydraulic cylinder (7) is continuously started to drive the two loading parts (10) to synchronously compact soil samples in the three valves (45);

And T5, after sample preparation is completed, starting the hydraulic cylinder (7) to reversely retract the hydraulic cylinder, so that the upper loading part (10) and the lower loading part (10) are sequentially separated from the three valves (45), removing the anchor ear (48), stirring the pawl (33) to separate the pawl from the end ratchet wheel (40), separating the arc-shaped pressing plate (43) from the slot (49) under the elastic reset force of each group of reset springs (41), removing the three valves (45), taking out the whole soil sample from the annular seat (50), and preparing the complete soil sample after stripping the second filter paper (46).