CN117554203B - Stable soil strength detection device for gypsum-based composite cementing material - Google Patents
Stable soil strength detection device for gypsum-based composite cementing material Download PDFInfo
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- CN117554203B CN117554203B CN202410041800.1A CN202410041800A CN117554203B CN 117554203 B CN117554203 B CN 117554203B CN 202410041800 A CN202410041800 A CN 202410041800A CN 117554203 B CN117554203 B CN 117554203B
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- 238000001514 detection method Methods 0.000 title claims abstract description 214
- 239000000463 material Substances 0.000 title claims abstract description 48
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 21
- 239000010440 gypsum Substances 0.000 title claims abstract description 21
- 239000002689 soil Substances 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 77
- 238000012360 testing method Methods 0.000 claims abstract description 76
- 238000007906 compression Methods 0.000 claims abstract description 75
- 230000006835 compression Effects 0.000 claims abstract description 56
- 230000002742 anti-folding effect Effects 0.000 claims abstract description 39
- 230000002968 anti-fracture Effects 0.000 claims abstract description 15
- 238000005452 bending Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 4
- 239000004566 building material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 208000010727 head pressing Diseases 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to a stable soil strength detection device for gypsum-based composite cementing materials, which comprises a detection table, a hydraulic cylinder and a mounting table, wherein an anti-fracture detection head, two compression detection heads and an anti-fracture pressure sensor and two compression pressure sensors are arranged at the bottom end of the mounting table; the detection table is provided with an anti-folding detection area and two compression-resistant detection areas, two detection rollers are arranged in the anti-folding detection area, and a material stirring mechanism for pushing two half test pieces after folding into the two compression-resistant detection areas respectively is arranged in the anti-folding detection area; the anti-fracture detection head bottom downwards protrudes out of the anti-compression detection head bottom. According to the method, after the bending resistance detection is completed, the test piece is subjected to compression strength detection twice at the same time, so that the accuracy of a detection result can be improved; and when the detection is switched from the anti-folding detection to the anti-compression detection, detection personnel do not need to operate below the mounting table, the safety performance is improved, the hydraulic cylinder does not need to drive the output end of the hydraulic cylinder to lift and then move downwards, and the overall detection efficiency is remarkably improved.
Description
Technical Field
The application relates to the technical field of building material performance detection, in particular to a stable soil strength detection device for a gypsum-based composite cementing material.
Background
The gypsum-based composite cementing material is a novel building material, which is prepared by taking desulfurized gypsum and fly ash as basic components and mixing with an exciting agent, an early strength water reducing agent and the like. The cementing material can directly utilize a large amount of fly ash and dihydrate desulfurized gypsum and has the characteristics of energy conservation, waste utilization, low production energy consumption and the like.
Under proper curing conditions, the cementing material can obtain higher strength, and the compressive strength after 28 days of curing can reach about 20MPA, which is 1-2 times of the strength of common building gypsum. In addition, the hydration hardening body of the cementing material has good water resistance and high softening coefficient. In general, the physical properties of the molded cement stabilized soil are measured, and a test piece of 40mm×40mm×160mm is prepared, and then compression test and fracture test are performed.
The related art discloses a Chinese patent with the publication number of CN113063670A, which provides a detection device for the compressive capacity of a cement test block, comprising a fixed table and a support frame fixedly welded at the upper end of the fixed table, wherein a double-sided cement block support piece is detachably arranged in an installation groove, and a double-head pressing piece is fixedly arranged on the support frame; when the cement test block needs to be subjected to anti-fracture detection, the placing frame is upward, the locating plate is placed in the limiting frame ring, the cement test block is horizontally placed on two groups of placing columns, the rotating block is rotated, the face provided with the compression bar unit is downward, and the telescopic end of the hydraulic cylinder moves downwards to drive the compression bar unit to complete the compression-resistant detection of the horizontally placed cement test block on the placing frame.
The related art in the above has the following drawbacks: in general, the flexural strength of a test piece is far smaller than the compressive strength of the test piece, and when the flexural test is carried out, the test piece is mainly broken in the axial direction, and the overall damage of the test piece is small, so that the test piece after the flexural test is finished can be subjected to the compressive test again, and the loss of the test piece is reduced; when the detection project is replaced, the output end of the hydraulic cylinder is required to move upwards to reserve enough space for transferring the test piece, a certain potential safety hazard exists when a detection person transfers, and the output end of the hydraulic cylinder with high output power is required to stretch out and retract to switch for a certain time, so that the detection efficiency is definitely affected.
Disclosure of Invention
In order to improve the problem that detection efficiency is low and potential safety hazard exists when current check out test set switches in anti-rolling and compressive testing, the application provides a stable soil intensity detection device of gypsum-based composite cementing material.
The application provides a gypsum-based composite cementing material stabilized soil intensity detection device adopts following technical scheme:
the utility model provides a gypsum-based composite cementing material stabilized soil intensity detection device, includes detection platform and pneumatic cylinder, the crossbeam has been erect to detection platform top, the pneumatic cylinder invertedly install in on the crossbeam, the output of pneumatic cylinder runs through the crossbeam and fixedly connected with mount table, anti-folding detection head and two resistance to compression detection heads are installed to the mount table bottom, anti-folding detection head is located the mount table middle part and two resistance to compression detection heads with anti-folding detection head is the symmetry setting, anti-folding detection head with be provided with anti-folding pressure sensor and resistance to compression pressure sensor between the resistance to compression detection head with the mount table respectively;
the detection table is provided with an anti-folding detection area and two anti-compression detection areas corresponding to the anti-folding detection head and the two anti-compression detection heads respectively, two detection rollers which are respectively arranged at two sides of the anti-folding detection head are arranged in the anti-folding detection areas, and a material stirring mechanism for pushing two half-test pieces after being folded into the two anti-compression detection areas respectively is arranged in the anti-folding detection areas;
the anti-fracture detection head bottom downwards protrudes out of the anti-compression detection head bottom.
Still further, the stirring mechanism comprises stirring rollers arranged on the detection rollers in a swinging way and a driving assembly for driving the two stirring rollers to synchronously circulate and approach to overturn and keep away from overturn, the stirring rollers swing by taking the axis of the detection rollers as a swinging shaft, and the stirring rollers are parallel to the detection rollers.
Furthermore, a sleeve seat is rotatably arranged at the end part of the detection roller, a swing rod is arranged on the sleeve seat in a penetrating manner, two ends of the material stirring roller are fixedly connected to the same ends of the two corresponding swing rods respectively, and the driving assembly is used for driving the swing rod to drive the material stirring roller to swing;
when the sleeve seat is turned over until the swing rod is vertical, the stirring roller can be abutted against the upper edge of the periphery of the detection roller.
Further, an elastic piece is arranged at the position between the stirring roller and the sleeve seat, and is compressed when the stirring roller abuts against the detection roller;
the driving assembly comprises a linear driving piece positioned right below the bending resistance detection head, a control rod is fixedly connected to the output end of the linear driving piece, two connecting rods are hinged to the control rod, and one end, away from the linear driving piece, of each connecting rod is hinged to the bottom end of the corresponding swinging rod on the same side; when the linear driving piece is started, the linear driving piece circularly works according to the sequence of driving the output end of the linear driving piece to move up and down;
when the output end of the linear driving piece moves upwards, the swing rod is turned from a vertical state to a state that the upper end of the swing rod points to the anti-fracture detection head.
Further, a contact sensor for detecting the tight abutting state of the stirring roller and the detection roller when the swing rod is in a vertical state is arranged on the detection roller or the sleeve seat, and the contact sensor is in control connection with the linear driving piece;
when the contact sensor does not detect that the stirring roller abuts against the detection roller, the linear driving piece is controlled to stop.
Further, the anti-fracture pressure sensor is in control connection with the linear driving piece; when the anti-folding pressure sensor detects heavy pressure and suddenly drops, the linear driving piece is controlled to start.
Still further, the control lever top is provided with the elastic support, when the test piece transversely arranges two on the detection roller, the elastic support produces compression deformation.
Further, the upper edge of the detection roller is higher than the table top of the detection table in the compression-resistant detection area.
Further, a friction structure is arranged on one side, close to the compression-resistant detection area on the same side, of the material stirring roller.
In summary, the beneficial technical effects of the application are:
1. when the hydraulic cylinder drives the output end of the hydraulic cylinder to move downwards, the mounting table is driven to move downwards, an anti-fracture detection head on the mounting table is firstly contacted with the test piece and pressurizes the test piece, and the anti-fracture pressure sensor can detect the pressurizing pressure until the hydraulic cylinder stops working after the test piece breaks from the middle; then pushing the broken two half test pieces into two compression-resistant detection areas respectively through a material stirring mechanism, and then continuously starting the hydraulic cylinder to enable the mounting table to drive the two compression-resistant detection heads to continuously move downwards and carry out compression-resistant detection on the two half test pieces in the two compression-resistant detection areas, wherein when the two half test pieces are fractured, the two compression-resistant pressure sensors can detect the compression strength of the two half test pieces;
2. the compressive strength of the test piece can be detected twice at the same time, and the accuracy of the detection result of the compressive strength of the test piece can be improved; moreover, when the detection is switched from the flexural strength detection to the compressive strength detection, detection personnel do not need to operate below the mounting table, the safety performance of the test piece during the strength detection is greatly improved, the hydraulic cylinder does not need to drive the output end of the hydraulic cylinder to lift and then move downwards, the overall detection efficiency is remarkably improved, and the influence on the service life of the hydraulic cylinder is small;
3. when the linear driving piece drives the control rod to move upwards, the control rod pushes the lower end of the swing rod to be far away from the control rod through the two connecting rods, so that the upper end of the swing rod turns over in the direction close to the control rod, and the swing rod also moves in the direction close to the anti-fracture detection head under the action of the deformation force of the elastic piece in the process of turning over along with the sleeve seat, so that the material stirring roller is as close to a fracture of a half sample as possible; when the control rod is driven to move downwards by the linear driving piece, the control rod pulls the lower end of the swing rod to be close to the control rod through the two connecting rods, so that the upper end of the swing rod turns over in the direction away from the control rod, the stirring roller stirs the half-section of sample to move towards the adjacent compression-resistant detection area, and the stirring roller is far away from the detection roller, so that the stirring roller can be elastically abutted against the lower end surface of the half-section of sample more effectively, and can slide on the sleeve seat along with the gradual turning of the swing rod, so that the stirring roller can prevent the stirring roller from clamping the half-section of sample on the mounting table and can not smoothly stir the half-section of sample to the adjacent compression-resistant detection area.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is an overall structural elevation view of an embodiment of the present application;
fig. 3 is a schematic structural diagram of a material stirring roller in a material stirring state according to an embodiment of the present application.
Reference numerals illustrate:
1. a detection table; 11. an anti-fold detection zone; 12. a compression-resistant detection zone;
2. a hydraulic cylinder; 21. a cross beam; 22. a mounting table;
31. an anti-folding detection head; 32. a compression-resistant detection head; 33. an anti-fracture pressure sensor; 34. a pressure-resistant pressure sensor;
4. a detection roller;
51. a stirring roller; 52. a sleeve seat; 53. swing rod; 54. an elastic member;
61. a linear driving member; 62. a control lever; 63. a connecting rod; 64. an elastic supporting piece.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The embodiment of the application discloses a stable soil intensity detection device for gypsum-based composite cementing material. Referring to fig. 1 and 2, a device for detecting the strength of stable soil of gypsum-based composite cementing material comprises a detection table 1 and a hydraulic cylinder 2, wherein a beam 21 is erected above the detection table 1, the hydraulic cylinder 2 is inversely installed on the beam 21, the output end of the hydraulic cylinder 2 penetrates through the beam 21 and is fixedly connected with a mounting table 22, the output end of the hydraulic cylinder 2 is fixedly connected in the middle of the mounting table 22, and diagonal bracing is arranged between the two ends of the mounting table 22 and the output end of the hydraulic cylinder 2. The bottom end of the mounting table 22 is provided with an anti-folding detection head 31 and two compression-resistant detection heads 32, the anti-folding detection head 31 is positioned in the middle of the mounting table 22, the two compression-resistant detection heads 32 are symmetrically arranged with the anti-folding detection head 31, and an anti-folding pressure sensor 33 and an anti-compression pressure sensor 34 are respectively arranged between the anti-folding detection head 31 and the compression-resistant detection head 32 and the mounting table 22; the bottom end of the anti-folding detection head 31 is downwards protruded from the bottom end of the anti-compression detection head 32.
And the detection table 1 is provided with an anti-folding detection area 11 and two anti-compression detection areas 12 corresponding to the anti-folding detection head 31 and the two anti-compression detection heads 32 respectively, two detection rollers 4 arranged on two sides of the anti-folding detection head 31 respectively are arranged in the anti-folding detection area 11, and a material stirring mechanism for pushing two half test pieces after being folded into the two anti-compression detection areas 12 respectively is arranged in the anti-folding detection area 11.
After the setting, when the strength detection is carried out on the cementing material stabilized soil test piece, the test piece to be detected is firstly placed on the two detection rollers 4, the middle part of the test piece is aligned with the anti-folding detection head 31 as much as possible, then the hydraulic cylinder 2 is started, the hydraulic cylinder 2 drives the output end of the hydraulic cylinder to move downwards to drive the mounting table 22 to move downwards, the anti-folding detection head 31 on the mounting table 22 is firstly contacted with the test piece and pressurizes the test piece, the anti-folding pressure sensor 33 can detect the pressurizing pressure until the test piece is broken from the middle, and the hydraulic cylinder 2 stops working, so that the anti-folding strength of the cementing material stabilized soil test piece can be detected.
The bottom end of the anti-fracture detecting head 31 protrudes downwards from the bottom end of the anti-compression detecting head 32, so that the distance between the anti-compression detecting head 32 and the table top of the detecting table 1 of the anti-compression detecting area 12 is larger than the thickness of the test piece, and the two broken half test pieces can be respectively pushed into the two anti-compression detecting areas 12 through a material stirring mechanism; the hydraulic cylinder 2 is then continuously started, so that the mounting table 22 drives the two compression-resistant detection heads 32 to continuously move downwards and perform compression-resistant detection on two half test pieces in the two compression-resistant detection areas 12, and when the two half test pieces are fractured, the two compression-resistant pressure sensors 34 can detect the compression strengths of the two half test pieces.
Therefore, the test piece can be subjected to compressive strength detection twice at the same time, and the accuracy of the detection result of the compressive strength of the test piece can be improved; moreover, when the detection is switched from the flexural strength detection to the compressive strength detection, detection personnel do not need to operate below the mounting table 22, the safety performance in the test piece strength detection is greatly improved, the hydraulic cylinder 2 does not need to drive the output end of the hydraulic cylinder to lift and then move downwards, the overall detection efficiency is remarkably improved, and the influence on the service life of the hydraulic cylinder 2 is small.
Further, referring to fig. 1 and 2, the material stirring mechanism includes a material stirring roller 51 installed on the detection roller 4 in a swinging manner, and a driving assembly for driving the two material stirring rollers 51 to synchronously circulate and approach to turn over and separate from the turning action, the material stirring roller 51 swings with the axis of the detection roller 4 as a swinging axis, and the material stirring roller 51 is arranged parallel to the detection roller 4. Specifically, the end part of the detection roller 4 is rotatably provided with a sleeve seat 52, the sleeve seat 52 is provided with a swinging rod 53 in a penetrating way, two ends of the material stirring roller 51 are respectively fixedly connected with the same ends of the two corresponding swinging rods 53, and the driving assembly is used for driving the swinging rods 53 to drive the material stirring roller 51 to swing; when the sleeve seat 52 is turned over until the swing rod 53 is vertical, the stirring roller 51 can be abutted against the upper edge of the periphery of the detection roller 4.
After the arrangement, when a sample is placed, the swing rod 53 is driven to be turned to a vertical state through the driving assembly, the stirring roller 51 is abutted against the right above the detection roller 4, the sample is placed on the two stirring rollers 51, and when the sample is broken under the lower pressure of the anti-folding detection roller 4, one end of the two half-section samples, which is opposite, is sunk, and the other end is turned. At this time, the driving assembly drives the lower ends of the two groups of swing rods 53 at two sides to swing towards the opposite directions, so that the two stirring rollers 51 are moved to be close to the opposite ends of the two half samples, and at this time, the opposite ends of the two half samples are lapped on the detection roller 4; then, the driving assembly drives the lower ends of the two groups of swing rods 53 to swing towards the approaching direction, so that the two stirring rollers 51 respectively lift the two half samples to move towards the approaching compression-resistant detection areas 12; thus, after the driving assembly drives the two groups of swinging rods 53 to synchronously circulate to approach to and separate from the overturning, the two stirring rollers 51 can swing reciprocally, and the two half samples can be completely pushed into the two corresponding compression detection areas 12 so as to enable the compression detection head 32 to simultaneously detect the compression strength of the two samples.
In order to ensure that the pusher roller 51 can accurately push a half sample in the reciprocating swing process, referring to fig. 1 and 3, an elastic member 54 is disposed at a position between the pusher roller 51 and the sleeve 52 on the swing rod 53, when the pusher roller 51 abuts against the detection roller 4, the elastic member 54 is compressed, the elastic member 54 is disposed as a spring sleeved on the swing rod 53, one end of the elastic member 54 abuts against the end of the pusher roller 51, and the other end abuts against the sleeve 52.
And the driving assembly comprises a linear driving piece 61 positioned under the bending resistance detection head 31, wherein the linear driving piece 61 can be an air cylinder, a hydraulic cylinder 2, an electric push rod, a linear motor and the like, the output end of the linear driving piece 61 is fixedly connected with a control rod 62, and the control rod 62 is arranged along the output direction of the linear driving piece 61. Two connecting rods 63 are hinged on the control rod 62, one end of each connecting rod 63 far away from the linear driving piece 61 is hinged with the bottom end of the corresponding swinging rod 53, and two ends or one end of each connecting rod 63 can be movably hinged to prevent clamping when necessary; the linear driving member 61 is cyclically operated in the order of driving the output end thereof to move up-down when started; when the output end of the linear driving member 61 moves upward, the swing link 53 is turned from the vertical state toward the state in which the upper end thereof is directed toward the bending resistance detecting head 31.
Thus, when the test piece is placed on the two material pulling rollers 51 and is pressed by the anti-folding detection head 31, the swing rod 53 is in a vertical state, and moves to the lowest end on the sleeve seat 52, the material pulling rollers 51 are pressed against the detection roller 4, and the elastic piece 54 is compressed and deformed. When the linear driving member 61 drives the control rod 62 to move upwards, the control rod 62 pushes the lower end of the swing rod 53 away from the control rod 62 through the two connecting rods 63, so that the upper end of the swing rod 53 turns over in a direction close to the control rod 62, and the swing rod 53 also moves in a direction close to the anti-folding detection head 31 under the action of the deformation force of the elastic member 54 in the process of turning over the following sleeve seat 52, so that the stirring roller 51 is as close to a fracture of a half of a sample as possible.
Then, when the linear driving member 61 drives the control rod 62 to move downwards, the control rod 62 pulls the lower end of the swing rod 53 to approach the control rod 62 through the two connecting rods 63, so that the upper end of the swing rod 53 turns over in a direction away from the control rod 62, at this time, the stirring roller 51 stirs the half-section sample to move towards the adjacent compression-resistant detection area 12, and because at this time, the stirring roller 51 is far away from the detection roller 4, the stirring roller 51 can be more effectively and elastically abutted against the lower end surface of the half-section sample, and along with the gradual turning over of the swing rod 53, the swing rod 53 can also slide on the sleeve seat 52, so that the stirring roller 51 can prevent the half-section sample from being clamped on the mounting table 22, and the half-section sample can not be smoothly stirred into the adjacent compression-resistant detection area 12.
Meanwhile, in order to achieve automatic start-stop of the linear driving member 61.
On the one hand, the buckling pressure sensor 33 is in control connection with the linear driving member 61; when the buckling pressure sensor 33 detects a heavy pressure and suddenly drops, the linear drive 61 is controlled to start. That is, when the breaking-resistant detecting head 31 breaks the test piece, the linear driving member 61 starts to start and drives the control lever 62 to move up and down and to circulate in this order.
On the other hand, a contact sensor for detecting the abutting state of the stirring roller 51 and the detection roller 4 when the swing rod 53 is in a vertical state is arranged on the detection roller 4 or the sleeve seat 52, the contact sensor is arranged on the upper edge of the periphery of the detection roller 4, and the contact sensor can be a pressure sensor specifically and is in control connection with the linear driving piece 61; when the contact sensor does not detect that the stirring roller 51 abuts against the detection roller 4 in the vertical state of the swing rod 53, the linear driving member 61 is controlled to stop. And in the concrete setting, the elastic deformation force of the elastic piece 54 arranged on the swinging rod 53 after being compressed is slightly larger than the dead weights of the swinging rod 53 and the material stirring roller 51, namely, when the swinging rod 53 is in a vertical state under the condition of no external force application, the material stirring roller 51 is pressed against the contact sensor.
In this way, when the stirring roller 51 pushes half of the test piece, the test piece directly leans against the contact sensor on the detection roller 4, or the stirring roller 51 is pressed to force the stirring roller 51 to press against the contact sensor on the detection roller 4, so that the contact sensor is always in a contact started state, and the linear driving piece 61 is always in a working state after being started; once the pushing of the half test piece is completed, no external force is applied to the contact sensor, the contact sensor is disconnected, and the linear driving piece 61 is controlled to stop. This achieves an automatic start-stop effect of the linear driving member 61.
In order to avoid that the stirring roller 51 is difficult to turn over to the breaking position of the test piece due to too sinking of the middle part of the test piece after being broken, referring to fig. 1 and 2, an elastic supporting member 64 is further arranged at the top end of the control rod 62, when the test piece is transversely arranged on the two detection rollers 4, the elastic supporting member 64 generates compression deformation, the elastic supporting member 64 can be a spring or a reed, so that the end parts of the two half test pieces can be supported simultaneously.
Meanwhile, in order to take and protect the stirring roller 51 to stir half test pieces into the compression-resistant detection area 12, the upper edge of the detection roller 4 is higher than the table surface of the detection table 1 in the compression-resistant detection area 12, and one side, close to the compression-resistant detection area 12 on the same side, of the stirring roller 51 is provided with a friction structure, which can be an anti-slip groove, an anti-slip protrusion or rubber, and the friction structure is set to be rubber in the embodiment in consideration of certain roughness of the surface of the test pieces.
The implementation principle of the stable soil strength detection device for the gypsum-based composite cementing material is as follows:
when the hydraulic cylinder 2 drives the output end of the test piece to move downwards, the mounting table 22 is driven to move downwards, and the bending strength detection head 31 on the mounting table 22 is firstly contacted with the test piece and pressurizes the test piece, so that the bending strength detection can be firstly carried out; when the test piece breaks, the linear driving piece 61 drives the control rod 62 to move upwards, the control rod 62 pushes the lower end of the swing rod 53 to be away from the control rod 62 through the two connecting rods 63, so that the upper end of the swing rod 53 turns over towards the direction close to the control rod 62, and the swing rod 53 also moves towards the direction close to the anti-fracture detection head 31 under the action of the deformation force of the elastic piece 54 in the process of turning over the following sleeve seat 52, so that the stirring roller 51 is close to the fracture of a half of the test piece as much as possible.
Then, when the linear driving piece 61 drives the control rod 62 to move downwards, the control rod 62 pulls the lower end of the swing rod 53 to be close to the control rod 62 through the two connecting rods 63, so that the upper end of the swing rod 53 turns over in a direction away from the control rod 62, and at the moment, the stirring roller 51 stirs the half-section of sample to move towards the adjacent compression-resistant detection area 12; therefore, under the driving of the linear driving piece 61, after the two groups of swinging rods 53 synchronously circulate to approach and turn away from, the two stirring rollers 51 can swing reciprocally, and two half samples can be completely pushed into the two corresponding compression-resistant detection areas 12 so as to enable the compression-resistant detection head 32 to simultaneously detect the compression strength of the two samples.
Therefore, the test piece can be subjected to compressive strength detection twice at the same time, and the accuracy of the detection result of the compressive strength of the test piece can be improved; moreover, when the detection is switched from the flexural strength detection to the compressive strength detection, detection personnel do not need to operate below the mounting table 22, the safety performance in the test piece strength detection is greatly improved, the hydraulic cylinder 2 does not need to drive the output end of the hydraulic cylinder to lift and then move downwards, the overall detection efficiency is remarkably improved, and the influence on the service life of the hydraulic cylinder 2 is small.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. The utility model provides a stable soil intensity detection device of gypsum-based composite cementing material, includes detection platform (1) and pneumatic cylinder (2), its characterized in that, detection platform (1) top is erect crossbeam (21), pneumatic cylinder (2) inversion install in on crossbeam (21), the output of pneumatic cylinder (2) runs through crossbeam (21) and rigid coupling have mount table (22), anti-bending detection head (31) and two resistance to compression detection heads (32) are installed to mount table (22) bottom, anti-bending detection head (31) are located mount table (22) middle part and two resistance to compression detection head (32) with anti-bending detection head (31) are the symmetry setting, anti-bending detection head (31) with be provided with anti-bending pressure sensor (33) and resistance to compression pressure sensor (34) between resistance to compression detection head (32) and mount table (22) respectively;
the detection table (1) is provided with an anti-folding detection area (11) and two anti-compression detection areas (12) corresponding to the anti-folding detection head (31) and the two anti-compression detection heads (32) respectively, two detection rollers (4) which are respectively arranged at two sides of the anti-folding detection head (31) are arranged in the anti-folding detection area (11), and a material shifting mechanism for pushing two half-test pieces after folding into the two anti-compression detection areas (12) respectively is arranged in the anti-folding detection area (11);
the bottom end of the anti-fracture detection head (31) protrudes downwards from the bottom end of the anti-compression detection head (32);
the material stirring mechanism comprises material stirring rollers (51) arranged on the detection rollers (4) in a swinging way and a driving assembly for driving the two material stirring rollers (51) to synchronously circulate and perform approaching overturning-keeping away overturning actions, the material stirring rollers (51) swing by taking the axis of the detection rollers (4) as a swinging shaft, and the material stirring rollers (51) are arranged parallel to the detection rollers (4);
a sleeve seat (52) is rotatably arranged at the end part of the detection roller (4), a swing rod (53) is arranged on the sleeve seat (52) in a penetrating manner, two ends of the material stirring roller (51) are fixedly connected to the same ends of the two corresponding swing rods (53) respectively, and the driving assembly is used for driving the swing rods (53) to drive the material stirring roller (51) to swing;
when the sleeve seat (52) is turned over to the swing rod (53) to be vertical, the stirring roller (51) can be abutted against the upper edge of the periphery of the detection roller (4);
therefore, after the two groups of swinging rods (53) synchronously circulate to approach and turn away from, the two stirring rollers (51) can swing reciprocally, and two half samples can be completely pushed into the two corresponding compression-resistant detection areas (12) so as to be simultaneously subjected to compression-resistant strength detection by the compression-resistant detection heads (32).
2. The device for detecting the strength of the stabilized soil of the gypsum-based composite cement according to claim 1, wherein an elastic piece (54) is arranged at a position between the stirring roller (51) and the sleeve seat (52), and the elastic piece (54) is compressed when the stirring roller (51) is propped against the detection roller (4);
the driving assembly comprises a linear driving piece (61) positioned under the anti-fracture detection head (31), a control rod (62) is fixedly connected to the output end of the linear driving piece (61), two connecting rods (63) are hinged to the control rod (62), and one end, far away from the linear driving piece (61), of each connecting rod (63) is hinged to the bottom end of the corresponding swinging rod (53) on the same side; the linear driving piece (61) circularly works according to the sequence of driving the output end of the linear driving piece to move up and down when being started;
when the output end of the linear driving piece (61) moves upwards, the swinging rod (53) is turned from the vertical state to the state that the upper end of the swinging rod points to the bending resistance detection head (31).
3. The device for detecting the strength of the stabilized soil of the gypsum-based composite cementing material according to claim 2, wherein a contact sensor for detecting the abutting state of the stirring roller (51) and the detection roller (4) when the swinging rod (53) is in a vertical state is arranged on the detection roller (4) or the sleeve seat (52), and the contact sensor is in control connection with the linear driving piece (61);
when the contact sensor does not detect that the stirring roller (51) is propped against the detection roller (4), the linear driving piece (61) is controlled to stop.
4. A gypsum-based composite cement stabilized soil strength testing device as claimed in any one of claims 2-3, wherein said flexural pressure sensor (33) is in control connection with said linear drive (61); the linear drive (61) is controlled to activate when the anti-collapse pressure sensor (33) detects a heavy pressure and suddenly drops.
5. A gypsum-based composite cement stabilized soil strength testing device according to any of claims 2-3, wherein the top end of the control rod (62) is provided with a resilient support (64), said resilient support (64) being compressively deformed when the test piece is placed transversely on both of the testing rolls (4).
6. A gypsum-based composite cement stabilized soil strength testing device according to claim 1, wherein the testing roll (4) upper edge is higher than the testing table (1) table top in the compression resistant testing zone (12).
7. The device for detecting the strength of the stabilized soil of the gypsum-based composite cement according to claim 1, wherein a friction structure is arranged on one side of the stirring roller (51) close to the compression-resistant detection area (12) on the same side.
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