CN119223708A - Fully automatic testing device and method for similar materials in geomechanical model tests - Google Patents
Fully automatic testing device and method for similar materials in geomechanical model tests Download PDFInfo
- Publication number
- CN119223708A CN119223708A CN202411754818.2A CN202411754818A CN119223708A CN 119223708 A CN119223708 A CN 119223708A CN 202411754818 A CN202411754818 A CN 202411754818A CN 119223708 A CN119223708 A CN 119223708A
- Authority
- CN
- China
- Prior art keywords
- assembly
- test piece
- batching
- pressure head
- stirring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 128
- 239000000463 material Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001035 drying Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000011897 real-time detection Methods 0.000 claims abstract description 12
- 230000007547 defect Effects 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 88
- 238000011068 loading method Methods 0.000 claims description 62
- 239000002994 raw material Substances 0.000 claims description 37
- 230000000712 assembly Effects 0.000 claims description 21
- 238000000429 assembly Methods 0.000 claims description 21
- 239000006185 dispersion Substances 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 238000012795 verification Methods 0.000 abstract 1
- 238000005056 compaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Landscapes
- 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
本发明属于地质力学模型试验领域，提供了一种地质力学模型试验相似材料全自动制检装置与方法，包括智能多级配料与均匀性检测系统能够实现多级搅拌配料，实时监测配料仓内部搅拌均匀度以保证配料均匀，自适应伺服加压系统能够在压制过程中根据输入试样参数自适应调整试件参数以达成试样制作需求，防粘结多规格成型与均压检测系统适应多种形态、规格试样制作，实时检测压制过程中试件内部是否存在空腔缺陷，可拆卸自动烘干与含水量离散度校核系统能够根据制样需求灵活选择烘干装置并在烘干过程中自动计算该批次试样的含水量均值。本发明能够保证同一组试件的均匀性，提高配比试验的效率和准确性，同时能够有效合理对试样进行评价检测。
The present invention belongs to the field of geomechanical model test, and provides a fully automatic test device and method for similar materials in geomechanical model test, including an intelligent multi-stage batching and uniformity detection system capable of realizing multi-stage mixing batching, real-time monitoring of the mixing uniformity inside the batching bin to ensure uniform batching, an adaptive servo pressurization system capable of adaptively adjusting the specimen parameters according to the input sample parameters during the pressing process to meet the sample production requirements, an anti-adhesion multi-specification molding and pressure equalization detection system capable of adapting to the production of samples of various forms and specifications, and real-time detection of whether there are cavity defects inside the specimen during the pressing process, and a detachable automatic drying and water content discreteness verification system capable of flexibly selecting a drying device according to the sample preparation requirements and automatically calculating the water content mean of the batch of samples during the drying process. The present invention can ensure the uniformity of the same group of specimens, improve the efficiency and accuracy of the proportioning test, and effectively and reasonably evaluate and detect the specimens.
Description
Technical Field
The invention belongs to the field of geomechanical model tests, and particularly relates to a full-automatic check device and method for similar materials in a geomechanical model test.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Geomechanical model tests are a common means for analyzing engineering problems, and are usually combined with numerical tests and theoretical analysis to jointly explore the occurrence mechanism of the engineering problems. The similar material proportioning test is a key step of geomechanical model test, and the test result relates to the accuracy of test data and the accuracy of research conclusion. The similar material proportion test process is complicated and careful, a large number of test pieces with different proportions are required to be manufactured, then the mechanical test is repeated, and finally the material proportion meeting the conditions can be obtained.
At present, the following problems mainly exist in the aspect of preparing the proportioning test piece:
1. Test piece fabrication and device selection are not canonical:
Multiple working procedures are needed in the process of preparing the test piece, in the implementation process of each working procedure, the selection of the test device in the working procedure is more random and is not standard enough, so that the prepared test piece has larger error, and the qualification rate of the prepared test piece is lower.
2. The test piece manufacturing efficiency is low, and the cost is high:
The proportioning test requires to manufacture a large number of test pieces, and the current test piece manufacturing method mainly comprises manual tamping and machine compacting, but only one test piece can be manufactured each time by the two methods, and the success rate is difficult to ensure. Manual compaction is time-consuming and labor-consuming, and the compaction by adopting a single-shaft press is high in economic cost. This restricts the efficient development of the proportioning test.
3. Test piece homogeneity is difficult to guarantee:
The compaction degree and the forming effect of the same group of test pieces are often influenced by various factors such as testers, tamping tools, feeding time and the like by adopting the existing test piece manufacturing method, so that the test results of the same group of test pieces have larger discreteness, and the accuracy of the proportioning test is directly influenced.
4. And the detection of a finished product test piece is limited:
after the test piece is manufactured and molded, the test of the test piece size is generally measured by using a ruler manually, the measurement is inconvenient, and the test piece is extremely easy to damage in the measurement process and the measurement precision is lower.
5. Real-time detection cannot be realized in the sample preparation process:
in the sample preparation process, the operation is usually performed according to a certain fixed flow, the real-time adjustment cannot be performed according to the actual situation in the sample preparation process, and the real-time detection in the sample preparation process cannot be realized.
The problems restrict the manufacturing efficiency and the test effect of the proportioning test piece, reduce the accuracy of the proportioning test and influence the reliability of the model test.
Disclosure of Invention
In order to solve the problems, the invention provides a full-automatic check device and method for a geomechanical model test similar material, which can ensure the uniformity of the same group of test pieces, improve the efficiency and accuracy of a proportioning test, enable the test piece manufacturing process to be flow-shaped and standardized, effectively and reasonably evaluate and detect the test pieces, and have the advantages of high manufacturing efficiency, good forming effect, small test piece discreteness, convenient operation, standardized manufacturing, flow-shaped and the like.
According to some embodiments, the present invention employs the following technical solutions:
The utility model provides a full-automatic system of geomechanical model test similar material examines device, includes intelligent multistage batching and homogeneity detecting system, self-adaptation servo pressurization system, antiseized many specifications shaping and voltage-sharing detecting system and can dismantle automatic stoving and water content check system, wherein:
The intelligent multistage batching and uniformity detecting system comprises a stirring device, an automatic batching assembly and a batching uniformity real-time detecting assembly, wherein the stirring device is arranged in the automatic batching assembly and is used for multistage stirring of raw materials in the automatic batching assembly, and a batching uniformity real-time detecting assembly is connected inside a rotating central shaft of the stirring device and is used for monitoring batching uniformity;
The self-adaptive servo pressurizing system comprises a servo hydraulic loading assembly, a self-adaptive control assembly, a bearing table and a loading pressure head, wherein the servo hydraulic loading assembly is connected with the loading pressure head, the distance between the loading pressure head and the bearing table for placing a sample is adjustable, and the self-adaptive control assembly is used for controlling the pressurizing parameters of the servo hydraulic loading assembly;
The anti-adhesion multi-specification forming and pressure equalizing detection system comprises a plurality of replaceable die assemblies which are arranged on the periphery below the loading pressure head, wherein each replaceable die assembly is driven by an independent hydraulic telescopic rod to change the form of a sample, and a pressure sensor is arranged in each replaceable die assembly and used for detecting whether a cavity defect exists in the sample;
The detachable automatic drying and water content dispersion checking system comprises drying equipment arranged on the side face of a bearing table and a water content dispersion checking assembly, wherein an action area of the drying equipment and an area where the bearing table/a sample is located are at least partially overlapped, and the water content dispersion checking assembly comprises an assembly for detecting the quality and the water content of the sample.
As an alternative embodiment, the automatic blending assembly comprises a raw material bin, a primary stirring bin, a vibration screen and a full stirring bin, wherein the raw material bin is positioned at the top of the automatic blending assembly, the lower end of the raw material bin is connected with the primary stirring bin through a separated type rotatable chassis, the lower end of the primary stirring bin is connected with the vibration screen through a separated type rotatable chassis, the lower end of the vibration screen is connected with the full stirring bin through a separated type rotatable screen, and the discharge port is positioned at the bottom end of the full stirring bin.
Alternatively, the stirring device is provided with at least two groups of combined stirring blades, and each group of combined stirring blades is connected with the top end motor through a central rotating shaft and is respectively positioned in the primary stirring bin and the full stirring bin.
As an alternative implementation mode, the batching uniformity real-time detection assembly comprises two groups of dynamic torque sensors and signal transmission lines, the axes of the combined stirring blades and the axes of the combined stirring blades of the full stirring bin are respectively positioned in the primary stirring bin, and the uniformity detection inside the stirring bin is realized by monitoring the torque at the corresponding combined stirring blades in real time.
As an alternative implementation manner, the loading pressure head of the self-adaptive servo pressurizing system is a detachable loading pressure head, the bearing table is a liftable table, the self-adaptive servo pressurizing system is further provided with a visual control panel, the detachable loading pressure head is connected with the servo hydraulic loading assembly through a fixing bolt, the visual control panel is positioned on the side surface of the loading pressure head, the test piece bearing table is positioned under the detachable loading pressure head, and the self-adaptive control assembly is positioned inside the detachable loading pressure head and the test piece bearing table;
the detachable loading pressure head can be replaced by a drill bit, and a sensor is arranged on the drill bit.
As an alternative implementation mode, the self-adaptive control component comprises a displacement sensor and a pressure sensor which are positioned in the detachable loading pressure head, and a mass sensor and a signal processing device which are positioned in the test piece bearing table, wherein the signal processing device is connected with the sensor to obtain corresponding parameters, and is used for self-adaptively adjusting the test piece pressurizing parameters according to preset parameters and the obtained parameters in the pressing process.
As an alternative embodiment, the anti-adhesion multi-specification forming and pressure equalizing detection system comprises four groups of replaceable die assemblies, a polytetrafluoroethylene cushion layer, four groups of hydraulic telescopic rods and four groups of pressure sensors, wherein the replaceable die assemblies encircle below a detachable loading pressure head, the bottom of the replaceable die assemblies clings to a bearing table, the polytetrafluoroethylene cushion layer is located on the test piece side of the replaceable die, the hydraulic telescopic rods are located on the outer side of the replaceable die assemblies, the two groups of hydraulic telescopic rods are connected through fixing bolts, and the pressure sensors are located inside the replaceable die assemblies.
As optional implementation mode, can dismantle automatic stoving and moisture content check system including dismantling drying-machine, test piece pusher, one-way sealing door, drying chamber and moisture content check subassembly, wherein, test piece pusher is located the side of the bottom of plummer, and two can dismantle the drying-machine and be located the both sides of plummer to the opening is towards the drying chamber, and the drying chamber is located the extension line of test piece pusher and plummer, and the centre of drying chamber is kept apart by one-way sealing door, and moisture content check subassembly includes the quality sensor and the moisture content computational system that set up in the drying chamber.
The working method of the full-automatic check device for the similar materials based on the geomechanical model test comprises the following steps:
(1) Weighing materials according to the required proportioning ratio, respectively adding the materials into a raw material bin, starting a stirring device to enable the raw materials to fall into a primary stirring bin, and primarily stirring the raw materials by a combined stirring blade; the method comprises the steps of (1) detecting torque at a joint stirring blade in real time by a batching uniformity real-time detection component, and considering that materials are uniformly mixed after a torque value is stable, so that the materials fall into a vibration screen;
(2) Presetting the height, compactness, expected quality and dwell time required by the sample preparation, starting the device, and pushing the four replaceable die assemblies inwards by a hydraulic cylinder to form a complete die;
(3) Adding the mixed raw materials according to the input expected mass, wherein the mass of the raw materials is detected in real time by a mass sensor in the bearing table;
(4) The four groups of pressure sensors in the replaceable die assembly record the pressure in real time respectively, if the four groups of error values are smaller than the set value, the sample is considered to be defect-free, the operation is continued, otherwise, the sample is considered to be defect, the machine alarms, and the operation is restarted from the step (2) after the sample is taken out;
(5) The loading pressure head carries out pressure maintaining operation on the test piece according to preset pressure maintaining time, a displacement sensor in the detachable loading pressure head records the height of the test piece after pressure maintaining, the density of the test piece under the current pressure is automatically calculated, the required quality is calculated according to the input height, the loading pressure head is automatically retracted after the pressure maintaining is finished, meanwhile, a replaceable die assembly is synchronously retracted to prevent the test piece from adhering, and demoulding is completed;
(6) The bearing table descends, the test piece descends to enter the side of the drying chamber, the test piece is pushed into the drying chamber by the test piece pushing device, the mixed raw materials are added according to the actual required mass obtained through self-adaptive calculation, and the quality of the raw materials is detected in real time by a mass sensor in the bearing table;
(7) Repeating steps (3) - (6);
(8) Starting a dryer, drying until the appointed time or the numerical value of a pressure sensor at the bottom of the drying chamber is not changed any more, recording the mass of the sample in real time by the pressure sensor at the bottom of the drying chamber and a mass sensor in the bearing table, calculating the dispersion degree of the water content, and determining whether the batch of samples are qualified or not according to the requirement;
(9) The replaceable die assembly is pushed to fold by the hydraulic loading device, the loading pressure head is replaced to be an intelligent drill bit, the preparation sample is selected to be placed in the replaceable die assembly, the detection while drilling is started, the control panel calculates cohesive force, internal friction angle and single-shaft compressive strength through the pushing speed, the rotating speed of the drill bit, the drilling pushing force and the drilling torque, and the complete detection process of the test pieces in the batch is completed.
In an alternative embodiment, in automatically calculating the density of the sample at the current pressure and calculating the required mass from the input height, the calculation formula is as follows:
;
Where m 1 is the actual required mass, l 1 is the expected height, m 2 is the theoretical expected mass, and l 2 is the current height.
As an alternative embodiment, the water content dispersion calculation is performed as follows:
;
Wherein, The water content dispersion, namely the water content variance, n is the number of test pieces,The quality is recorded for the pressure sensor at the bottom of the drying chamber,Record mass for the load-bed internal mass sensor,To record the calculated moisture content using the bottom pressure sensor of the drying chamber,To record the calculated moisture content using the load-bed internal mass sensor,Is the total mass after dehydration.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention realizes the full-flow automation of the sample preparation of stirring, screening, pressing and drying, and the visual control panel controls the hydraulic loading device to realize the whole processes of pressurization, pressure maintaining and pressure relief, thereby improving the preparation efficiency and reducing the discreteness among the samples.
(2) The invention can randomly change the size and shape of a manufactured test piece according to the manufacturing requirements of different samples, and can meet the manufacturing requirements of various samples by changing the detachable pressure head and the combined die.
(3) The combined die has the advantages that the contact area between a single die component and a test piece is small, the polytetrafluoroethylene material is coated on the inner surface, the combined die can be disassembled at the same time and at a constant speed, the damage to the test piece in the demolding process is reduced to the greatest extent, the friction force applied to the test piece in the molding process is reduced, the demolding is easier, and the molding rate is higher.
(4) The invention can detect the sample preparation condition in real time and automatically adjust according to the preset preparation index, and monitor the height, quality and compactness of each test piece in real time in the preparation process, thereby avoiding the generation of unqualified samples to the maximum extent.
(5) The invention can detect the mechanical properties of the test piece in time, and can directly read various mechanical parameters of the prepared test piece by replacing the pressure head, thereby realizing comprehensive detection and evaluation of the test piece.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of a fully automated fabrication apparatus for geomechanical model testing of similar materials in accordance with one or more embodiments of the present invention;
FIG. 2 is a schematic diagram of an automatic batching assembly in accordance with one or more embodiments of the present invention;
FIG. 3 is a schematic view of an automatic drying assembly according to one or more embodiments of the present invention;
FIG. 4 is a schematic view of a smart drill bit according to one or more embodiments of the present invention;
FIG. 5 is a schematic view of an alternative mold assembly according to one or more embodiments of the present invention;
Wherein, 1, a stirring device, 2, an automatic batching assembly, 3, a detachable loading pressure head, 4, a visual control panel, 5, replacing a die assembly, 6, lifting a test piece, 7, detaching a dryer, and 8, drying chambers;
1-1, connecting a base, 1-2, a sensor and 1-3, a drill bit assembly;
2-1 parts of raw material bin, 2-2 parts of primary stirring bin, 2-3 parts of vibration screen, 2-4 parts of full stirring bin and 2-5 parts of discharge port;
5-1, polytetrafluoroethylene cushion layers and 5-2, fixing bolts;
8-1 parts of test piece pushing device, 8-2 parts of detachable dryer, 8-3 parts of test piece lifting table, 8-4 parts of one-way sealing door and 8-5 parts of drying chamber.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, 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 invention belongs.
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 invention. 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.
Embodiments of the application and features of the embodiments may be combined with each other without conflict.
Example 1
The utility model provides a geomechanical model test similar material integration automatic manufacturing device, as shown in fig. 1, including intelligent multistage batching and homogeneity detecting system, self-adaptation servo pressurization system, antiseized many specifications shaping and pressure equalizing detecting system and can dismantle automatic stoving and moisture check system, intelligent multistage batching and homogeneity detecting system can realize multistage stirring batching, can real-time supervision batching storehouse inside stirring degree of consistency is even in order to guarantee the batching simultaneously, self-adaptation servo pressurization system can be in the suppression in-process according to input sample parameter self-adaptation adjustment test piece parameter in order to reach sample preparation demand, antiseized many specifications shaping and pressure equalizing detecting system can adapt to multiple form, specification sample preparation, can real-time detection in-process test piece inside have cavity defect scheduling problem simultaneously, can dismantle automatic stoving and moisture degree of consistency check system can select drying device in a flexible way according to the sample preparation demand and in-process automatic calculation the moisture mean value of this batch sample.
The intelligent multi-stage batching and uniformity detecting system comprises an automatic batching assembly 2 and a stirring device 1, wherein the stirring device 1 is provided with two groups or two stages of combined stirring blades and a motor, and specifically comprises a raw material bin 2-1, a primary stirring bin 2-2, a vibration screen 2-3, a full stirring bin 2-4 and a combined stirring blade and batching uniformity real-time detecting assembly, wherein the raw material bin 2-1 is positioned at the top of the automatic batching assembly, the lower end of the raw material bin is connected with the primary stirring bin 2-2 through a separated type rotatable chassis, the lower end of the primary stirring bin 2-2 is connected with the vibration screen 2-3 through the separated type rotatable chassis, the lower end of the vibration screen 2-3 is connected with the full stirring bin 2-4 through the separated type rotatable screen, a discharge hole 2-5 is positioned at the bottom end of the full stirring bin 2-4, the combined stirring blades are connected with the motor at the top through a central rotating shaft and are positioned in the primary stirring bin 2-2 and the full stirring bin 2-4, and the rotating central shaft is internally connected with the batching uniformity real-time detecting assembly.
The batching uniformity real-time detection assembly comprises two groups of dynamic torque sensors and signal transmission lines, wherein the axes of the combined stirring blades and the full stirring bin are respectively positioned in the primary stirring bin and are combined with each other to stir She Zhouxin, and the uniformity detection inside the stirring bin is realized by monitoring the torque at the stirring blades in real time.
The self-adaptive servo pressurizing system comprises a servo hydraulic loading assembly, a detachable loading pressure head 3, a self-adaptive control assembly, a visual control panel 4 and a test piece lifting table 6, wherein the detachable loading pressure head 3 is connected with the servo hydraulic loading assembly through a fixing bolt, the visual control panel 4 is positioned on the side surface of the system, the test piece lifting table 6 is positioned under the detachable loading pressure head 3, and the self-adaptive control assembly is positioned inside the detachable loading pressure head 3 and the test piece lifting table 6.
Of course, in other embodiments, it is also possible that the carrying table on which the test piece is placed is stationary, and the detachable loading ram 3 is provided on a lifting device or a three-dimensional moving mechanism. These may be of prior art and are not described in detail herein.
In this embodiment, the adaptive control component includes a displacement sensor and a pressure sensor located inside the detachable loading ram 3, and a mass sensor and a signal processing device located inside the test piece lifting platform 6, which can adaptively adjust parameters of the test piece according to input parameters in the pressing process.
As shown in fig. 4, the detachable loading ram 3 may be replaced by an intelligent drill bit, the intelligent drill bit includes a connection base 1-1, and a drill bit assembly 1-3 disposed at the center of the lower end of the connection base 1-1, and a sensor 1-2 is disposed on the drill bit assembly 1-3 to realize while-drilling sensing.
The anti-adhesion multi-specification forming and pressure equalizing detection system comprises four groups of replaceable die assemblies 5, a polytetrafluoroethylene cushion layer 5-1, four groups of hydraulic telescopic rods and four groups of pressure sensors, wherein the replaceable die assemblies 5 encircle below a detachable loading pressure head, the bottoms of the replaceable die assemblies are tightly attached to a test piece lifting table, the polytetrafluoroethylene cushion layer 5-1 is located on the test piece side of the replaceable die, the hydraulic telescopic rods are located on the outer side of the replaceable die assemblies 5, the two groups of replaceable die assemblies are connected through fixing bolts 5-2, and the pressure sensors are located inside the replaceable die assemblies 5.
Wherein, as shown in FIG. 3, can dismantle automatic stoving and moisture content check system includes can dismantle drying-machine 8-2, test piece pusher 8-1, one-way sealing door 8-4, drying chamber 8-5 and moisture content check subassembly, wherein, test piece pusher 8-1 is located test piece elevating platform 8-3 bottom side, two can dismantle drying-machine 8-2 are located test piece elevating platform 8-3 both sides, and the opening is towards drying chamber 8-5, drying chamber 8-5 is located on the extension line of test piece pusher 8-1 and test piece elevating platform 8-3, keep apart by one-way sealing door 8-4 in the centre, moisture content check subassembly includes the inside quality sensor of drying chamber and moisture content calculation system.
Example two
A geomechanical model test similar material manufacturing and real-time detection method based on the device of the first embodiment comprises the following steps:
(1) And a feeding step of weighing materials according to the required proportioning proportion and respectively adding the materials into a raw material bin.
(2) And the primary stirring step is to start the device, unscrew the trays at the bottom of the raw material bin respectively, enable the raw materials to fall into the primary stirring bin, and stir the raw materials primarily by the stirring blades.
(3) And a primary uniformity detection step, namely detecting torque at the stirring blade in real time by a batching uniformity real-time detection assembly, considering that the materials are uniformly mixed after the torque value is stable, screwing out a tray at the bottom of the primary stirring bin, and enabling the materials to fall into a vibration screen.
(4) And a vibration screening step, namely screening the mixed materials after the vibration screen is connected with the vibrator, wherein the screened materials fall into a full stirring bin.
(5) And (3) fully stirring, namely, the raw materials fall into a fully stirring bin, and the raw materials are fully stirred by stirring blades.
(6) And the secondary uniformity detection step is that the torque at the stirring blade is detected in real time by the batching uniformity real-time detection component, and the materials are considered to be uniformly mixed after the torque value is stabilized again.
(7) The step of presetting sample parameters, namely inputting the height, the compactness, the expected quality and the pressure maintaining time required by the sample preparation at the operation panel and starting the device.
(8) And (3) die assembly, namely, pushing the four replaceable die assemblies to fold inwards by a hydraulic cylinder to form a complete die.
(9) And a preset value mass feeding step, namely adding the mixed raw materials according to the input expected mass by the device system, wherein the mass of the raw materials is detected in real time by a mass sensor in the lifting platform.
(10) And the sample pressing step, namely the detachable loading pressure head moves downwards and presses the raw materials in the die according to the set compactness.
(11) And (3) detecting the defects of the sample, namely respectively recording the pressures of four groups of pressure sensors in the replaceable die assembly in real time, avoiding uneven pressure caused by the occurrence of cavities in the replaceable die assembly, if the four groups of error values are less than or equal to 5%, considering the sample to be defect-free, continuing, if the error value is greater than 5%, considering the sample to be defect, alarming by a machine, and restarting the operation from the step (8) after taking out.
(12) And the pressure maintaining step, namely the loading pressure head carries out pressure maintaining operation on the test piece according to the preset pressure maintaining time.
(13) The self-adaptive calculation step is that a displacement sensor in the detachable loading pressure head records the height of the sample after pressure maintaining, automatically calculates the density of the sample under the current pressure and calculates the required mass according to the input height, and the calculation formula is as follows:
;
Where m 1 is the actual required mass, l 1 is the expected height, m 2 is the theoretical expected mass, and l 2 is the current height.
(14) And (3) a uniform demoulding step, namely automatically retracting the loading pressure head after pressure maintaining is finished, synchronously retracting the replaceable mould assembly to prevent the sample from adhering, and completing demoulding.
(15) And a sample transferring step, namely, the sample lifting table descends, the sample descends to enter the side of the drying chamber, and the sample is pushed into the drying chamber through the U-shaped port of the sample pushing device by the unidirectional sealing door.
(16) And the self-adaptive mass feeding step, namely adding the mixed raw materials according to the actual required mass obtained by self-adaptive calculation by a device system, and detecting the mass of the raw materials in real time by a mass sensor in the lifting platform.
(17) Repeating steps (9) - (16).
(18) And a drying step, namely automatically starting the detachable dryer, and stopping drying until the designated time or the numerical value of the pressure sensor at the bottom of the drying chamber is not changed any more.
(19) The dehydration condition detection step comprises the steps of recording the mass of a sample in real time by a pressure sensor at the bottom of a drying chamber and a mass sensor in a lifting table, and calculating the water content dispersion according to the following calculation formula:
;
wherein: For the moisture content dispersion (i.e., moisture content variance), n is the number of test pieces, The quality is recorded for the pressure sensor at the bottom of the drying chamber,The quality is recorded for the internal quality sensor of the lifting platform,To record the calculated moisture content using the bottom pressure sensor of the drying chamber,To record the calculated moisture content using the elevator table internal mass sensor,Is the total mass after dehydration.
The user can determine whether the batch of samples is qualified according to the self requirement.
(20) The detection while drilling step comprises the steps that a replaceable die assembly is pushed to fold by a hydraulic loading device, a loading pressure head is replaced to be an intelligent drill bit, a preparation sample is selected to be placed in the replaceable die assembly, after the detection while drilling is started, a control panel automatically calculates cohesive force, internal friction angle and uniaxial compressive strength through a quantitative relation model (DP-UCS model) based on while-drilling parameters and uniaxial compressive strength of rock through a pushing speed, a drill bit rotating speed, drilling thrust and drilling torque, and the complete detection process of the batch of test pieces is completed.
Of course, in other embodiments, other models may be used to calculate the relevant drilling parameters.
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 modifications, equivalent substitutions, improvements, etc. which do not require the inventive effort by those skilled in the art, are intended to be included within the scope of the present invention.
Claims (10)
1. Full-automatic system of examining device of geomechanical model test similar material, characterized by, including intelligent multistage batching and homogeneity detecting system, self-adaptation servo pressurization system, antiseized many specifications shaping and voltage-sharing detecting system and can dismantle automatic stoving and water content check system, wherein:
The intelligent multistage batching and uniformity detecting system comprises a stirring device, an automatic batching assembly and a batching uniformity real-time detecting assembly, wherein the stirring device is arranged in the automatic batching assembly and is used for multistage stirring of raw materials in the automatic batching assembly, and a batching uniformity real-time detecting assembly is connected inside a rotating central shaft of the stirring device and is used for monitoring batching uniformity;
The self-adaptive servo pressurizing system comprises a servo hydraulic loading assembly, a self-adaptive control assembly, a bearing table and a loading pressure head, wherein the servo hydraulic loading assembly is connected with the loading pressure head, the distance between the loading pressure head and the bearing table for placing a sample is adjustable, and the self-adaptive control assembly is used for controlling the pressurizing parameters of the servo hydraulic loading assembly;
The anti-adhesion multi-specification forming and pressure equalizing detection system comprises a plurality of replaceable die assemblies which are arranged on the periphery below the loading pressure head, wherein each replaceable die assembly is driven by an independent hydraulic telescopic rod to change the form of a sample, and a pressure sensor is arranged in each replaceable die assembly and used for detecting whether a cavity defect exists in the sample;
The detachable automatic drying and water content dispersion checking system comprises drying equipment arranged on the side face of a bearing table and a water content dispersion checking assembly, wherein an action area of the drying equipment and an area where the bearing table/a sample is located are at least partially overlapped, and the water content dispersion checking assembly comprises an assembly for detecting the quality and the water content of the sample.
2. The full-automatic preparation and inspection device for the geomechanical model test similar materials, as claimed in claim 1, wherein the automatic batching assembly comprises a raw material bin, a primary stirring bin, a vibration screen and a full stirring bin, the raw material bin is positioned at the top of the automatic batching assembly, the lower end of the raw material bin is connected with the primary stirring bin through a separated type unscrewable chassis, the lower end of the primary stirring bin is connected with the vibration screen through the separated type unscrewable chassis, the lower end of the vibration screen is connected with the full stirring bin through the separated type unscrewable screen, and the discharge port is positioned at the bottom end of the full stirring bin;
the stirring device is provided with at least two groups of combined stirring blades, and each group of combined stirring blades is connected with the top motor through a central rotating shaft and is respectively positioned in the primary stirring bin and the full stirring bin.
3. The full-automatic preparation and inspection device for geomechanical model test similar materials according to claim 2, wherein the batching uniformity real-time detection assembly comprises two groups of dynamic torque sensors and signal transmission lines, wherein the axes of the combined stirring blades in the primary stirring bin and the axes of the combined stirring blades in the full stirring bin are respectively positioned, and the uniformity detection in the stirring bin is realized by monitoring the torque at the corresponding combined stirring blades in real time.
4. The full-automatic preparation and inspection device for the geomechanical model test similar materials, as claimed in claim 1, is characterized in that a loading pressure head of the self-adaptive servo pressurizing system is a detachable loading pressure head, the bearing table is a lifting table, the self-adaptive servo pressurizing system is further provided with a visual control panel, the detachable loading pressure head is connected with a servo hydraulic loading assembly through a fixing bolt, the visual control panel is positioned on the side surface of the loading pressure head, the test piece bearing table is positioned under the detachable loading pressure head, and the self-adaptive control assembly is positioned inside the detachable loading pressure head and the test piece bearing table;
the detachable loading pressure head can be replaced by a drill bit, and a sensor is arranged on the drill bit.
5. The full-automatic geomechanical model test similar material preparing and detecting device according to claim 4, wherein the self-adaptive control assembly comprises a displacement sensor and a pressure sensor which are positioned in a detachable loading pressure head, and a mass sensor and a signal processing device which are positioned in a test piece bearing table, wherein the signal processing device is connected with the sensor to obtain corresponding parameters, and is used for self-adaptively adjusting the test piece pressurizing parameters according to preset parameters and the obtained parameters in the pressing process.
6. The full-automatic check device for geomechanical model test similar materials according to claim 1, wherein the anti-adhesion multi-specification forming and pressure equalizing detection system comprises four groups of replaceable die assemblies, a polytetrafluoroethylene cushion layer, four groups of hydraulic telescopic rods and four groups of pressure sensors, wherein the replaceable die assemblies encircle below a detachable loading pressure head, the bottom of the replaceable die assemblies clings to a bearing table, the polytetrafluoroethylene cushion layer is located on a test piece side of the replaceable die, the hydraulic telescopic rods are located on the outer side of the replaceable die assemblies, the two groups of hydraulic telescopic rods are connected through fixing bolts, and the pressure sensors are located inside the replaceable die assemblies.
7. The full-automatic check device for geomechanical model test similar materials according to claim 1, wherein the detachable automatic drying and water content checking system comprises a detachable dryer, a test piece pushing device, a one-way sealing door, a drying chamber and a water content checking assembly, wherein the test piece pushing device is positioned on the side face of the bottom of the bearing table, the two detachable dryers are positioned on two sides of the bearing table and open towards the drying chamber, the drying chamber is positioned on the extension line of the test piece pushing device and the bearing table, the middle of the drying chamber is isolated by the one-way sealing door, and the water content checking assembly comprises a quality sensor and a water content calculating system arranged in the drying chamber.
8. A method for operating a fully automated device for testing similar materials based on geomechanical models according to any one of claims 1 to 7, comprising the steps of:
(1) Weighing materials according to the required proportioning ratio, respectively adding the materials into a raw material bin, starting a stirring device to enable the raw materials to fall into a primary stirring bin, and primarily stirring the raw materials by a combined stirring blade; the method comprises the steps of (1) detecting torque at a joint stirring blade in real time by a batching uniformity real-time detection component, and considering that materials are uniformly mixed after a torque value is stable, so that the materials fall into a vibration screen;
(2) Presetting the height, compactness, expected quality and dwell time required by the sample preparation, starting the device, and pushing the four replaceable die assemblies inwards by a hydraulic cylinder to form a complete die;
(3) Adding the mixed raw materials according to the input expected mass, wherein the mass of the raw materials is detected in real time by a mass sensor in the bearing table;
(4) The four groups of pressure sensors in the replaceable die assembly record the pressure in real time respectively, if the four groups of error values are smaller than the set value, the sample is considered to be defect-free, the operation is continued, otherwise, the sample is considered to be defect, the machine alarms, and the operation is restarted from the step (2) after the sample is taken out;
(5) The loading pressure head carries out pressure maintaining operation on the test piece according to preset pressure maintaining time, a displacement sensor in the detachable loading pressure head records the height of the test piece after pressure maintaining, the density of the test piece under the current pressure is automatically calculated, the required quality is calculated according to the input height, the loading pressure head is automatically retracted after the pressure maintaining is finished, meanwhile, a replaceable die assembly is synchronously retracted to prevent the test piece from adhering, and demoulding is completed;
(6) The bearing table descends, the test piece descends to enter the side of the drying chamber, the test piece is pushed into the drying chamber by the test piece pushing device, the mixed raw materials are added according to the actual required mass obtained through self-adaptive calculation, and the quality of the raw materials is detected in real time by a mass sensor in the bearing table;
(7) Repeating steps (3) - (6);
(8) Starting a dryer, drying until the appointed time or the numerical value of a pressure sensor at the bottom of the drying chamber is not changed any more, recording the mass of the sample in real time by the pressure sensor at the bottom of the drying chamber and a mass sensor in the bearing table, calculating the dispersion degree of the water content, and determining whether the batch of samples are qualified or not according to the requirement;
(9) The replaceable die assembly is pushed to fold by the hydraulic loading device, the loading pressure head is replaced to be an intelligent drill bit, the preparation sample is selected to be placed in the replaceable die assembly, the detection while drilling is started, the control panel calculates cohesive force, internal friction angle and single-shaft compressive strength through the pushing speed, the rotating speed of the drill bit, the drilling pushing force and the drilling torque, and the complete detection process of the test pieces in the batch is completed.
9. The method of claim 8, wherein in automatically calculating the density of the sample at the current pressure and calculating the required mass from the input height, the calculation formula is as follows:
;
Where m 1 is the actual required mass, l 1 is the expected height, m 2 is the theoretical expected mass, and l 2 is the current height.
10. The method of claim 8, wherein the water content dispersion is calculated as follows:
;
Wherein, The water content dispersion, namely the water content variance, n is the number of test pieces,The quality is recorded for the pressure sensor at the bottom of the drying chamber,Record mass for the load-bed internal mass sensor,To record the calculated moisture content using the bottom pressure sensor of the drying chamber,To record the calculated moisture content using the load-bed internal mass sensor,Is the total mass after dehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411754818.2A CN119223708B (en) | 2024-12-03 | 2024-12-03 | Full-automatic check device and method for similar materials in geomechanical model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411754818.2A CN119223708B (en) | 2024-12-03 | 2024-12-03 | Full-automatic check device and method for similar materials in geomechanical model test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119223708A true CN119223708A (en) | 2024-12-31 |
| CN119223708B CN119223708B (en) | 2025-02-14 |
Family
ID=93945669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411754818.2A Active CN119223708B (en) | 2024-12-03 | 2024-12-03 | Full-automatic check device and method for similar materials in geomechanical model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119223708B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212922A (en) * | 1997-09-22 | 1999-04-07 | 欧文斯-伊利诺伊封闭物有限公司 | Method and apparatus for compression molding plastic articles |
| CN103196738A (en) * | 2013-03-20 | 2013-07-10 | 山东大学 | Device and method for accurate compression molding of test piece during similar material confecting process |
| CN204142543U (en) * | 2014-10-22 | 2015-02-04 | 山东大学 | The automatic mixing of analog material and the accurate compression molding device of test specimen |
| CN204263576U (en) * | 2014-11-20 | 2015-04-15 | 青岛科技大学 | A kind of packing uniform standard cylindrical specimen batch die mould general combined mould |
| CN105938070A (en) * | 2016-07-06 | 2016-09-14 | 山东大学 | Multifunctional true triaxial rock drilling test system and test method for characterizing the characteristics of rocks |
| CN107206649A (en) * | 2015-01-27 | 2017-09-26 | 株式会社电装 | Shaping dies, shaping dies system and compress moulding method |
| CN109001013A (en) * | 2018-06-12 | 2018-12-14 | 东北大学 | A kind of polygon analog material specimen molding mold and method |
| CN109142007A (en) * | 2018-11-10 | 2019-01-04 | 山东科技大学 | A kind of Effective model testing standard test specimen processing mold and its application method |
| CN110208065A (en) * | 2019-06-28 | 2019-09-06 | 长沙理工大学 | The rocks sample integration system of batch control compactness is for device and method |
| CN110849688A (en) * | 2019-11-29 | 2020-02-28 | 中国石油大学(华东) | Model test device for coupling effect of anchoring force loss of prestressed anchor rod (cable) and tunnel aging deformation |
| CN111122323A (en) * | 2019-12-31 | 2020-05-08 | 太原理工大学 | Test device and method for crack resistance mechanism of anchor rod under dynamic and static load of surrounding rock |
| CN112985951A (en) * | 2021-04-29 | 2021-06-18 | 中国矿业大学(北京) | Geomechanics model test similar material automatic molding device and manufacturing system |
| CN118169001A (en) * | 2023-12-13 | 2024-06-11 | 河北工业大学 | A layered fracture grouting lifting experimental device and experimental method considering the influence of stiffness |
-
2024
- 2024-12-03 CN CN202411754818.2A patent/CN119223708B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212922A (en) * | 1997-09-22 | 1999-04-07 | 欧文斯-伊利诺伊封闭物有限公司 | Method and apparatus for compression molding plastic articles |
| CN103196738A (en) * | 2013-03-20 | 2013-07-10 | 山东大学 | Device and method for accurate compression molding of test piece during similar material confecting process |
| CN204142543U (en) * | 2014-10-22 | 2015-02-04 | 山东大学 | The automatic mixing of analog material and the accurate compression molding device of test specimen |
| CN204263576U (en) * | 2014-11-20 | 2015-04-15 | 青岛科技大学 | A kind of packing uniform standard cylindrical specimen batch die mould general combined mould |
| CN107206649A (en) * | 2015-01-27 | 2017-09-26 | 株式会社电装 | Shaping dies, shaping dies system and compress moulding method |
| CN105938070A (en) * | 2016-07-06 | 2016-09-14 | 山东大学 | Multifunctional true triaxial rock drilling test system and test method for characterizing the characteristics of rocks |
| CN109001013A (en) * | 2018-06-12 | 2018-12-14 | 东北大学 | A kind of polygon analog material specimen molding mold and method |
| CN109142007A (en) * | 2018-11-10 | 2019-01-04 | 山东科技大学 | A kind of Effective model testing standard test specimen processing mold and its application method |
| CN110208065A (en) * | 2019-06-28 | 2019-09-06 | 长沙理工大学 | The rocks sample integration system of batch control compactness is for device and method |
| CN110849688A (en) * | 2019-11-29 | 2020-02-28 | 中国石油大学(华东) | Model test device for coupling effect of anchoring force loss of prestressed anchor rod (cable) and tunnel aging deformation |
| CN111122323A (en) * | 2019-12-31 | 2020-05-08 | 太原理工大学 | Test device and method for crack resistance mechanism of anchor rod under dynamic and static load of surrounding rock |
| CN112985951A (en) * | 2021-04-29 | 2021-06-18 | 中国矿业大学(北京) | Geomechanics model test similar material automatic molding device and manufacturing system |
| CN118169001A (en) * | 2023-12-13 | 2024-06-11 | 河北工业大学 | A layered fracture grouting lifting experimental device and experimental method considering the influence of stiffness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119223708B (en) | 2025-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5948970A (en) | System and method for controlling concrete production | |
| CN205898606U (en) | Many physical and chemical properties on -line measuring of material device | |
| CN117309661A (en) | Concrete quality on-line measuring system | |
| CN114166631B (en) | A test method for identifying the flow and breakage mechanisms of bulk materials under external loads | |
| CN119223708B (en) | Full-automatic check device and method for similar materials in geomechanical model test | |
| US5285681A (en) | On-line pellet durability tester | |
| CN110146441B (en) | Test device for measuring the coefficient of kinetic friction between concrete structures and soil | |
| US9121804B2 (en) | Thermal erosion tester | |
| CN111781046A (en) | A complete set of test device and test method for testing mechanical properties of rammed coal cake | |
| CN112985951A (en) | Geomechanics model test similar material automatic molding device and manufacturing system | |
| CN112808351A (en) | Deep processing method of rice | |
| KR200434946Y1 (en) | Flow pressure setting device of fuel pressure regulator | |
| CN110823691A (en) | Fine aggregate crushing value test equipment and test method thereof | |
| US3433056A (en) | Permeability cell | |
| CN111967799B (en) | Method for identifying materials and process problems of circulator by sticking integrated parameter table | |
| CN118682917A (en) | A digital production line for concrete processing and production method thereof | |
| CN117147287A (en) | Powder tabletting test device and method | |
| CN222219586U (en) | A collector experimental reaction equipment | |
| CN222719342U (en) | Multifunctional detachable grouting molding and direct shear test die | |
| CN210442170U (en) | Intelligent model box system appearance device | |
| CN111572905A (en) | Packaging production device and process for titanium sponge product | |
| CN114112718B (en) | Method and device for detecting normal-temperature strength of lost foam coating | |
| CN216349028U (en) | Sample sand weighing device | |
| SU1589136A1 (en) | Method of determining optimal temperature of processing of phenolic plastic materials | |
| CN221391798U (en) | Steel wire cord fabric prefabricating die for laboratory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |