CN209945822U - Lever type sampling machine for triaxial compression test of disturbed soil - Google Patents
Lever type sampling machine for triaxial compression test of disturbed soil Download PDFInfo
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- CN209945822U CN209945822U CN201920539395.0U CN201920539395U CN209945822U CN 209945822 U CN209945822 U CN 209945822U CN 201920539395 U CN201920539395 U CN 201920539395U CN 209945822 U CN209945822 U CN 209945822U
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Abstract
The utility model discloses a lever proof press of disturbed soil triaxial compression test, system appearance mould are fixed in the mould backup pad, and on the mould backup pad was fixed in linear guide's slider, can load and unload slider, mould backup pad and system appearance mould are whole from the guide rail many times to go into each layer soil sample in the system appearance mould in the gradation. The lifter plate is connected with the push rod of lever subassembly, and the lifting of drift is realized in the afterburning arm rotation of lever subassembly, makes the drift with each layer soil sample compaction in the system appearance mould to setting for thickness, only needs the manual work during the operation to afterburning arm pushing down can. A plurality of samples can be pressed at one time, the punching depth of the punch is controlled by the positioning frame for limiting the stress application arm at different heights, and the limiting of the positioning frame at different heights can be calculated and determined by combining the size of the stress application arm and the movement track during sample preparation. The lifting plate has guide of the vertical rod during movement. The method has the advantages of accurately controlling the thickness and the flatness of the layered pressing sample, high sample preparation efficiency and simple mold making and demolding operation.
Description
Technical Field
The utility model relates to a triaxial compression test's system appearance equipment, concretely relates to disturbed soil triaxial compression test's lever system appearance machine.
Background
The triaxial compression test is a test method for measuring the shear strength of soil, and generally 3-4 soil samples are respectively subjected to axial pressure under different confining pressures to be sheared until being damaged. The triaxial compression test has the outstanding advantages that the drainage condition can be controlled more strictly, the pore water pressure change in the test sample can be measured, and the stress state in the test sample is relatively clear.
According to the standard requirements, during the triaxial compression test, the preparation of the disturbed soil sample generally adopts a compaction method, and the sample preparation steps and requirements are as follows:
soil samples meeting the requirements of dry density and water content are compacted in a compaction cylinder in a plurality of layers (namely, silt is divided into 3-5 layers, and cohesive soil is divided into 5-8 layers), the mass of each layer of soil sample is equal, and the contact surface of each layer is planed. Compacting the last layer, leveling two ends of the sample in the compacting cylinder, taking out the sample, weighing the sample, and ensuring the qualityThe density difference of the same group of samples must not exceed 0.02g/cm3。
When the sample is prepared by the compaction method, the following defects and shortcomings exist:
1. only one sample can be prepared at a time, the sample preparation steps are complicated, the sample preparation efficiency is low, and the physical consumption of sample preparation personnel is large;
2. each layer of soil sample may be stressed unevenly, so that the height, the flatness and the density of the sample are not easy to be accurately controlled, and the standard requirements are difficult to meet;
3. harsh hammering sound can be generated during sample preparation, the generated vibration is large, and serious noise pollution is caused.
4. The debristling equipment is a single debristling needle, so the debristling time is long and the efficiency is low.
In view of the shortcomings of compaction method sample preparation, some researchers have improved the triaxial compression test sample preparation method and device for disturbed soil, which are listed as the following examples:
CN 107607385 a discloses a vacuum test device for triaxial remolded soil sample preparation, which adopts vacuum suction to solidify soft clay to achieve the purpose of preparing uniform soil sample, but the process is complicated, the equipment is complex and the thickness of layered sample pressing cannot be accurately controlled.
CN 202814770U discloses a remolded soil sample preparation facilities for triaxial shear test, and it adopts the settlement method to consolidate the soil sample, can obtain the remolded sample that the water content is even, but the process of static load consolidation soil sample is slow, and the system appearance is efficient not high.
CN 204008243U discloses remolded soil triaxial compression test sample preparation facilities, and it extrudes the system appearance through the clamp plate, can discharge the indoor gas of system appearance simultaneously, demolishs the diaphragm after the extrusion process is accomplished, takes out the top board, obtains the sample. However, the sample preparation device needs to be removed after the sample pressing is completed, so that the sample can be taken out, the process is complicated, and the efficiency is not high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an ability accurate control layering is pressed appearance thickness, system appearance efficient and make a mould and drawing of patterns easy operation's lever proof press.
The utility model provides a lever-type sampling machine for triaxial compression test of disturbed soil, which comprises a bottom plate, a linear guide rail, a mold supporting plate, a sampling mold, a vertical rod, a lifting plate, a punch, a positioning frame and a lever assembly; the guide rail of the linear guide rail is fixed on the bottom plate, the die supporting plate is fixed on the slide block of the linear guide rail, the sample preparation die is fixed on the die supporting plate, the upright rods are symmetrically arranged on the bottom plate and correspond to two sides of the linear guide rail, the punch heads are connected to the lower side of the lifting plate, the lifting plate can be sleeved on the upright rods in a sliding mode, the number and the positions of the punch heads and the sample preparation die correspond to each other, and the positioning frame is vertically connected between the upright rods on the same; the lever assembly comprises a support, a force adding arm and a push rod, the support is horizontally arranged above the lifting plate, corresponds to the opposite side of the positioning frame and is supported on the bottom plate through a vertical supporting piece, the lower end of the force adding arm is hinged to the support, the rotating angle of the force adding arm is limited through the positioning frame, the upper end of the push rod is connected to the force adding arm in a sliding mode, and the lower end of the push rod is connected to the lifting plate; the upper end of the force-applying arm extends out of the positioning frame.
In an embodiment of the above technical scheme, the linear guide rail is an SBR linear guide rail, two sliding blocks are arranged on the guide rail, and a magnetic limiting rod along the vertical direction is connected to the outer side of the bottom support of the guide rail corresponding to one of the sliding blocks.
In an embodiment of the above technical solution, the bottom plate and the mold supporting plate are both rectangular steel plates, a planar dimension of the mold supporting plate is smaller than a planar dimension of the bottom plate, the mold supporting plate is fixed to the slider, and the mold supporting plate and the bottom plate share a central plane in the width direction.
In one embodiment of the above technical solution, the sample preparation mold includes a cylindrical barrel, a hoop and a protective barrel, wherein the outer walls of both ends of the cylindrical barrel have inward taper, the cylindrical barrel is formed by splicing a plurality of pieces of arc-shaped steel plates, the hoop is sleeved outside the cylindrical barrel to shape the cylindrical barrel, and the protective sleeve is sleeved at the upper end of the cylindrical barrel; the upper side of the mould supporting plate is provided with a circular ring, and the lower end of the cylindrical barrel is inserted into the circular ring.
In an embodiment of the above technical scheme, the lifter plate is a rectangular plate, the punch comprises a pull rod and a pressure plate at the lower end of the pull rod, the upper end of the pull rod is welded at the lower side of the lifter plate, linear bearings are fixed at four corners of the lifter plate, two ends of each linear bearing extend out of the lifter plate, and the lifter plate is sleeved on the vertical rod through the linear bearings.
In an embodiment of the above technical scheme, the positioning frame is a vertical rectangular frame, the top of the height direction of the positioning frame is provided with a pair of positioning holes along the horizontal direction, the positioning holes are provided with clamping bolts in a matched manner, the upper part of the positioning frame is uniformly provided with a plurality of positioning holes along the horizontal direction, and the positioning holes are provided with positioning bolts in a matched manner.
In one embodiment of the above technical solution, the support includes a T-shaped plate and a vertical ear plate connected to a web plate thereof, the top of the vertical ear plate has a hinge hole, and the web plate has a circular hole corresponding to the outer side of the vertical ear plate; the vertical supporting piece is a supporting plate, the upper end of the vertical supporting piece is connected to the middle position of the outer edge of the T-shaped plate wing plate, and the lower end of the vertical supporting piece is connected to the upper side of the bottom plate; the lower end of the force-adding arm is hinged to the top of the vertical ear plate through a pin shaft, and the upper end of the push rod is connected to the force-adding arm in a sliding mode.
In one embodiment of the above technical solution, the push rod is a cylindrical rod, the upper end of the push rod is spherical, and two planes symmetrical with respect to the axial center plane of the push rod are processed on the outer wall of the upper section; there is vertical otic placode mounting groove, bottom at the middle part of the arm of force that adds, and the both ends of push rod mounting groove are spherical, and the interlude shape matches with the combined shape of push rod end and upper portion section, and the shape of vertical otic placode mounting groove matches with the rotation orbit of the articulated section of rectangle, and the push rod inserts the installation back from the upper end of push rod mounting groove, and its lower extreme passes connect behind the round hole in the T template web outside in the upside of lifter plate.
In one embodiment of the above technical solution, the force application arm includes a hinge section and a force application section, the push rod installation groove is located in the middle of the hinge section, and the force application section is in threaded connection with the upper end of the hinge section.
The utility model discloses a system appearance mould is fixed in the mould backup pad, and on the mould backup pad was fixed in linear guide's slider, can be many times with the whole swift follow guide rail of slider, mould backup pad and system appearance mould take off and back to each layering soil sample of packing into toward the system appearance mould in very convenient gradation. The lifter plate is connected with the push rod of lever subassembly, realizes the lift of lifter plate and the drift of connecting through the push rod when the lever subassembly adds the arm of force and rotates to make each layer soil sample compaction in the drift will system appearance mould to setting for thickness, during system appearance operation, only need the manual work with afterburning arm down can, easy operation. Because can fix a plurality of system appearance moulds simultaneously on the mould backup pad, so the lift of accessible lifter plate realizes the suppression of a plurality of samples simultaneously, improves the suppression efficiency. The depth of each pressing of the punch can be controlled by limiting the stress application arm at different heights through the positioning frame, and the limiting of the positioning frame at different heights can be accurately calculated and determined by combining the size of the stress application arm and the movement track during sample preparation, so that the thickness of the layered sample pressing can be accurately controlled. The lifting plate is guided by the vertical rod during lifting movement, so that the flatness of a pressed sample can be ensured. And when demoulding is finished after the mould making, the sliding block, the mould supporting plate and the sample making mould are integrally detached from the guide rail, and then the sample making mould is detached. Therefore, the utility model has the advantages of ability accurate control layering pressure appearance thickness, system appearance are efficient and make a mould and drawing of patterns easy operation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the lifter plate assembly of fig. 1.
Fig. 3 is a schematic structural view of the lever assembly holder of fig. 1.
Fig. 4 is a schematic view of the assembly of the lever assembly force arm and the push rod of fig. 1.
Fig. 5 is a schematic structural diagram of the sample-making mold in fig. 1 (without showing the casing).
FIG. 6 is a schematic view of a planer used in sample preparation.
FIG. 7 is a schematic view of a funnel used in loading a soil sample into a sample preparation mold.
Detailed Description
As shown in fig. 1, the lever-type sample making machine for triaxial compression test of disturbed soil disclosed in this embodiment includes a bottom plate 1, a vertical rod 2, a linear guide rail 3, a mold fixing plate 4, a positioning frame 5, a lever assembly 6, a lifting plate assembly 7, and a sample making mold 8.
The bottom plate 1 is a rectangular plate, and two groups of linear guide rails 3 are symmetrically fixed on two sides of the center plane of the bottom plate 1 in the width direction. In this embodiment, an SBR linear guide rail is adopted, two sliding blocks are disposed on the guide rail, and a magnetic limiting rod 31 along the vertical direction is fixed on the bottom support of the guide rail corresponding to the outer end of one of the sliding blocks. In fig. 1, the magnetic limiting rod is positioned at the outer end of the rear-end sliding block.
Four angles of the bottom plate are fixed on the flat ground through foundation bolts.
The die fixing plate 4 is a rectangular plate, the plane size of the die fixing plate is smaller than that of the bottom plate 1, and the die fixing plate is fixed on the sliding block through a fastening bolt and shares a width direction central plane with the bottom plate 1. The upper side of the mould supporting plate is provided with 4 rings.
The number of the upright stanchions 2 is four, the upright stanchions are symmetrically fixed on two sides of the linear guide rail 3 on the bottom plate 1, the right upright stanchion is used for installing a support of the lever component 6, and the upper end of the right upright stanchion is provided with a thread section.
The locating rack 5 is a vertical rectangular rack, the top of the height direction of the locating rack is provided with a pair of locating holes along the horizontal direction, and a clamping bolt is matched in the locating holes. The upper part of the positioning frame is evenly provided with a plurality of pairs of positioning holes along the horizontal direction, and positioning bolts are matched in the positioning holes. The lower end of the positioning frame 5 is connected to the middle position between the upright stanchions 2 on the same side on the bottom plate.
As can be seen from fig. 1 and 2, the lifting plate assembly 7 includes a lifting plate 71 and a punch 72 connected to the lower side of the lifting plate, the lifting plate is a rectangular plate, the punch includes a pull rod and a platen at the lower end of the pull rod, and the upper end of the pull rod is welded to the lower side of the lifting plate. The number and arrangement positions of the punches correspond to the rings on the die supporting plate. Linear bearings (not shown in the figure) are installed at four corners of the lifting plate, two ends of each linear bearing extend out of the lifting plate and penetrate through the four vertical rods 2 through the linear bearings, the vertical rods can guide the lifting plate to move up and down, and stable movement of the lifting plate is guaranteed. The arrangement of the linear bearing further improves the guiding function, so that the flatness of a pressed sample is better ensured.
When the installation position of the magnetic limiting rod on the guide rail bottom support is pushed in place by the sliding block, the position of the sample preparation die corresponds to the position of the punch.
As shown in fig. 1, the lever assembly 6 includes a support, a support plate, a force applying arm, and a push rod.
And calculating the position distribution of each positioning hole on the positioning frame by combining the geometric dimension of the force adding arm and the movement track of the force adding arm during sample preparation.
As shown in figure 3, the support comprises a T-shaped plate 61 and a vertical lug plate 62, the vertical lug plate is connected to a web plate of the T-shaped plate, the top of the vertical lug plate is provided with a hinge hole, the upper end of a support plate 63 is connected to the middle position of the outer edge of a wing plate of the T-shaped plate, and two ends of the T-shaped plate are provided with round holes corresponding to the upright rods 2. As shown in figure 1, when the support is installed, two ends of a T-shaped plate 61 of the support penetrate through a right vertical rod 2, the lower end of a supporting plate 63 is fixed on the upper side of a bottom plate 1 to enable the support to be vertically positioned, and the right vertical rod penetrates through the T-shaped plate and then is connected with a horizontal limiting position of a locking nut T-shaped plate.
As shown in fig. 4, the push rod 64 is a cylindrical rod, the upper end of which is spherical, and the outer wall of the upper section is provided with two planes which are symmetrical with respect to the axial center plane of the push rod.
As can be seen from fig. 1 and 4, the force application arm includes a rectangular hinge section 65 and a cylindrical section 66 connected to the upper end of the rectangular hinge section 65, the lower end of the rectangular hinge section 65 is hinged to the top of the vertical ear plate 62 through a pin, and the upper end of the push rod 64 is slidably connected to the rectangular hinge section 65.
The middle part of the rectangular hinged section is provided with a push rod mounting groove, the top part is provided with a cylindrical section mounting hole, and the bottom part is provided with a vertical ear plate mounting groove. The cylinder section mounting hole is a threaded hole, and the lower end of the cylinder section is in threaded connection with the mounting hole. The shape of otic placode mounting groove matches with the rotation orbit of articulated section, and the top of vertical otic placode is articulated through the round pin axle after inserting in the otic placode mounting groove. The both ends of push rod mounting groove are spherical, and the interlude shape matches with the combination shape of push rod end and upper portion section, makes the interlude have the guide function concurrently, and when push rod 64 inserted the installation from the upper end of push rod mounting groove, its lower extreme passed and connects in the upside of lifter plate 71 behind the round hole in the T template web outside, realized the transmission of power through this push rod. When the force applying arm rotates, the upper end of the push rod slides in the push rod mounting groove, and the lower end of the push rod enables the lifting plate to realize lifting movement.
The structure that two bar boards were assembled is adopted to the articulated section of rectangle of this embodiment, offers half of each mounting hole respectively in length direction one side of two shape blocks, and two shape blocks are connected the back with support, cylinder section and push rod and are fastened two bar boards through the fastener and become whole.
As shown in figure 1, the lever assembly 6 is in an initial state after being installed, a cylindrical section of the stress application arm is supported by a clamping bolt at the top of the positioning frame 5, the lifting plate 71 is pulled by the push rod 64 to be in the highest position, and the punch 72 connected with the lifting plate is positioned above the sample preparation mold 8.
As can be seen from fig. 1 and 5, the sample preparation mold 8 includes a cylindrical tube 81, a hoop 82 and a protective tube (not shown in the drawings), the outer walls of both ends of the cylindrical tube have inward taper, the cylindrical tube is formed by splicing a plurality of pieces of arc-shaped steel plates, the hoop is sleeved outside the cylindrical tube to shape the cylindrical tube, and the protective tube is sleeved at the upper end of the cylindrical tube. The upper side of the mould supporting plate 4 is provided with a circular ring, and the lower end of the cylindrical barrel is inserted into the circular ring. The protective cylinder is only used when the uppermost layer of soil sample is filled into the cylindrical cylinder so as to prevent the soil sample from spilling.
After the assembly of the sampling machine is completed, the sample can be prepared, as shown in fig. 1, four samples can be prepared at one time by the embodiment, and the preparation process specifically comprises the following steps:
first, sample preparation
(1) The cylindrical section of the lever component force-applying arm is supported on a clamping pin at the top of the positioning frame, so that the lifting plate is positioned at the highest position, and the punch connected with the lifting plate is positioned at the highest position;
(2) inserting a positioning bolt into a positioning hole at the lowest part of the positioning hole group at the upper part of the positioning frame;
(3) the slider, the mold supporting plate and the sample preparation mold are integrally pulled out along the guide rail, the first layer of soil sample is filled into the cylindrical barrel of the sample preparation mold through the funnel 9 shown in fig. 6, then the first layer of soil sample is filled back to the guide rail, and the mold supporting plate is pushed to the position of the magnetic limiting rod, so that the mold supporting plate is sucked by the magnetic limiting rod, the positioning of the mold supporting plate in the pressing process is ensured, and accidental displacement is avoided.
As shown in fig. 6, the mouth of the funnel 9 is in the shape of a straight cylinder and is matched with the mold cylinder in size to prevent the soil sample from spilling when the soil is filled.
(4) Pulling out a clamping bolt at the top of the positioning frame, applying force to the cylindrical section of the force application arm, enabling the force application arm to rotate downwards around the hinged part at the lower end of the force application arm, enabling the lower end of the push rod to push the lifting plate and the punch on the lifting plate to move downwards together until the cylindrical section is blocked by the positioning bolt, and compacting the first layer of soil sample to a set thickness;
(5) applying a reverse force to the cylindrical section to enable the force application arm to rotate reversely until the cylindrical section returns to the highest position, and inserting a clamping bolt at the top of the positioning frame again to support the cylindrical section to enable the punch to return;
(6) the surface of the soil sample compacted in the sample preparation mold is planed by a planing steel needle of a planing device 10 shown in fig. 7; as shown in fig. 7, the shaving device 10 is composed of a long handle, a steel needle fixing slender rod and three shaving steel needles, the lower end of the long handle is fixedly connected to the middle position of the steel needle fixing slender rod, and the upper ends of the three shaving steel needles are inserted into the steel needle fixing slender rod at equal intervals.
(7) Pulling out the positioning pin in the step (2) and inserting the positioning pin into the last positioning hole, repeating the steps (3) to (6), and repeating the steps in the same way, compacting each subsequent layer of soil sample, and when the last layer of soil sample is loaded into the sample preparation mold, sleeving a protective cylinder on the top of the cylindrical cylinder, and not performing roughening treatment on the surface after compacting;
at this moment, the molding of the first batch of samples is finished, and the stress application arm returns to the initial state to wait for the next batch of sample preparation operation after the samples are demolded;
second, demolding
The slider, the mold supporting plate and the sample preparation mold are integrally pulled out along the guide rail, the sample preparation mold is taken down from the circular ring on the mold supporting plate, the hoop ring on the outer wall of the cylindrical cylinder is taken down, then each arc-shaped plate of the cylindrical cylinder is peeled off from the outer wall of the cylindrical soil sample, and the demolding is completed.
The utility model discloses with the actuating mechanism of lever subassembly for suppressing the sample, only need the manual work for lever subassembly application of force can accomplish the mould of a plurality of samples of a batch, adopt linear guide as the mould backup pad and the mounting rail of the system appearance mould of fixing on it, make the layering adorn native and press appearance process convenient and fast more. The accurate control of the punch pressing depth is realized through the positioning frame to the control of the rotation angle of the stress application arm, the push rod is stably pushed to the lifting plate through the rotation of the stress application arm, so that the punches can stably press soil samples in various sample making molds, the same height, the flatness and the dry density of a molding sample are guaranteed, the sample can be guaranteed to obtain accurate test data through a triaxial compression test, and the requirement of teaching experiments and scientific researches on test effects is better met.
Claims (9)
1. The utility model provides a lever sampling machine of disturbed soil triaxial compression test which characterized in that: the device comprises a bottom plate, a linear guide rail, a die supporting plate, a sample preparation die, a vertical rod, a lifting plate, a punch, a positioning frame and a lever assembly; the guide rail of the linear guide rail is fixed on the bottom plate, the die supporting plate is fixed on the slide block of the linear guide rail, the sample preparation die is fixed on the die supporting plate, the upright rods are symmetrically arranged on the bottom plate and correspond to two sides of the linear guide rail, the punch heads are connected to the lower side of the lifting plate, the lifting plate can be sleeved on the upright rods in a sliding mode, the number and the positions of the punch heads and the sample preparation die correspond to each other, and the positioning frame is vertically connected between the upright rods on the same; the lever assembly comprises a support, a force adding arm and a push rod, the support is horizontally arranged above the lifting plate, corresponds to the opposite side of the positioning frame and is supported on the bottom plate through a vertical supporting piece, the lower end of the force adding arm is hinged to the support, the rotating angle of the force adding arm is limited through the positioning frame, the upper end of the push rod is connected to the force adding arm in a sliding mode, and the lower end of the push rod is connected to the lifting plate; the upper end of the force-applying arm extends out of the positioning frame.
2. A lever-type specimen machine for triaxial compression testing of disturbed soil as claimed in claim 1, wherein: the linear guide is an SBR linear guide, two sliding blocks are arranged on the guide, and a magnetic limiting rod along the vertical direction is connected to the outer side of the bottom support of the guide corresponding to one of the sliding blocks.
3. A lever-type specimen machine for triaxial compression testing of disturbed soil as claimed in claim 2, wherein: the bottom plate and the die supporting plate are rectangular steel plates, the plane size of the die supporting plate is smaller than that of the bottom plate, the die supporting plate is fixed on the sliding block, and the die supporting plate and the bottom plate share the center plane in the width direction.
4. A lever-type specimen machine for triaxial compression testing of disturbed soil as claimed in claim 3, wherein: the sample preparation mold comprises a cylindrical barrel, a hoop and a protective barrel, wherein the outer walls of two ends of the cylindrical barrel are provided with inward taper angles, the cylindrical barrel is formed by splicing a plurality of pieces of arc-shaped steel plates, the hoop is sleeved outside the cylindrical barrel to shape the cylindrical barrel, and the protective sleeve is sleeved at the upper end of the cylindrical barrel; the upper side of the mould supporting plate is provided with a circular ring, and the lower end of the cylindrical barrel is inserted into the circular ring.
5. A lever-type specimen machine for triaxial compression testing of disturbed soil as claimed in claim 1, wherein: the lifter plate is the rectangular plate, and the drift includes the pressure disk of pull rod and its lower extreme, and the upper end of pull rod welds in the downside of lifter plate, and four bights of lifter plate are fixed with linear bearing, and linear bearing's both ends all stretch out outside the lifter plate, the lifter plate pass through linear bearing cover in the pole setting.
6. A lever-type prototype of disturbed soil triaxial compression test as claimed in claim 4, characterized in that: the locating rack is a vertical rectangular rack, a pair of locating holes in the horizontal direction are formed in the top of the locating rack in the height direction, clamping bolts are matched in the locating holes, a plurality of locating holes in the horizontal direction are uniformly distributed in the upper portion of the locating rack, and locating bolts are matched in the locating holes.
7. A lever-type specimen machine for triaxial compression testing of disturbed soil as claimed in claim 3, wherein: the support comprises a T-shaped plate and a vertical lug plate connected to a web plate of the T-shaped plate, a hinge hole is formed in the top of the vertical lug plate, and a round hole is formed in the web plate corresponding to the outer side of the vertical lug plate; the vertical supporting piece is a supporting plate, the upper end of the vertical supporting piece is connected to the middle position of the outer edge of the T-shaped plate wing plate, and the lower end of the vertical supporting piece is connected to the upper side of the bottom plate; the lower end of the force-adding arm is hinged to the top of the vertical ear plate through a pin shaft, and the upper end of the push rod is connected to the force-adding arm in a sliding mode.
8. A lever-type specimen machine for triaxial compression testing of disturbed soil as claimed in claim 7, wherein: the push rod is a cylindrical rod, the upper end of the push rod is spherical, and two planes which are symmetrical relative to the axial central plane of the push rod are processed on the outer wall of the upper section; there is vertical otic placode mounting groove, bottom at the middle part of the arm of force that adds, and the both ends of push rod mounting groove are spherical, and the interlude shape matches with the combined shape of push rod end and upper portion section, and the shape of vertical otic placode mounting groove matches with the rotation orbit of the articulated section of rectangle, and the push rod inserts the installation back from the upper end of push rod mounting groove, and its lower extreme passes connect behind the round hole in the T template web outside in the upside of lifter plate.
9. A lever-type specimen machine for triaxial compression testing of disturbed soil as claimed in claim 8, wherein: the stress application arm comprises a hinge section and a stress application section, the push rod installation groove is located in the middle of the hinge section, and the stress application section is in threaded connection with the upper end of the hinge section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920539395.0U CN209945822U (en) | 2019-04-19 | 2019-04-19 | Lever type sampling machine for triaxial compression test of disturbed soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920539395.0U CN209945822U (en) | 2019-04-19 | 2019-04-19 | Lever type sampling machine for triaxial compression test of disturbed soil |
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| Publication Number | Publication Date |
|---|---|
| CN209945822U true CN209945822U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920539395.0U Expired - Fee Related CN209945822U (en) | 2019-04-19 | 2019-04-19 | Lever type sampling machine for triaxial compression test of disturbed soil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916688A (en) * | 2019-04-19 | 2019-06-21 | 中南大学 | A kind of the lever sampling machine and its method for making sample of disturbed soil triaxial compression test |
| CN112461623A (en) * | 2020-11-13 | 2021-03-09 | 山东建筑大学 | Test device and method capable of preparing multiple test pieces in batch |
-
2019
- 2019-04-19 CN CN201920539395.0U patent/CN209945822U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916688A (en) * | 2019-04-19 | 2019-06-21 | 中南大学 | A kind of the lever sampling machine and its method for making sample of disturbed soil triaxial compression test |
| CN109916688B (en) * | 2019-04-19 | 2024-04-12 | 中南大学 | Lever type sample making machine for triaxial compression test of disturbing soil and sample making method thereof |
| CN112461623A (en) * | 2020-11-13 | 2021-03-09 | 山东建筑大学 | Test device and method capable of preparing multiple test pieces in batch |
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