CN212540018U - Sand cobble stratum wear coefficient measuring device - Google Patents
Sand cobble stratum wear coefficient measuring device Download PDFInfo
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- CN212540018U CN212540018U CN202020980202.8U CN202020980202U CN212540018U CN 212540018 U CN212540018 U CN 212540018U CN 202020980202 U CN202020980202 U CN 202020980202U CN 212540018 U CN212540018 U CN 212540018U
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Abstract
The utility model relates to an abrasiveness tests the field, especially relates to a sandy cobble stratum wear coefficient measuring device. The device comprises a basic frame, a bearing unit, a driving motor, a fixing frame, alloy block groups to be detected, a soil body injection unit and a data detection assembly, wherein collected original soil is injected into the bearing unit through the soil body injection unit, the fixing frame is driven to rotate through the driving motor, the alloy block groups to be detected on the fixing frame rotate along with the soil body injection unit, the driving motor is slidably arranged on the basic frame, the fixing frame can rotate and move downwards, in the displacement stroke, the alloy block groups to be detected rotate to generate abrasion loss, the abrasion loss is converted into abrasion height according to the abrasion loss, the data detection assembly detects related data, the track length of the alloy block groups to be detected is calculated, an abrasion curve is drawn through the abrasion loss and the track length. The device is simple to operate, the single test is low in cost, the test result is visual, and the abrasive wear coefficient of the hard alloy cutter under the complex condition can be measured.
Description
Technical Field
The utility model relates to an abrasiveness tests the field, especially relates to a sandy cobble stratum wear coefficient measuring device.
Background
At present, the planning and construction mode of urban rail transit construction in China is mainly underground lines, and the main construction methods adopted for tunnel construction in underground rail transit engineering are a subsurface excavation method and a shield method, wherein the shield method is most widely applied due to the advantages of high speed, safe construction, high mechanization degree, good stratum adaptability and the like. The shield machine is used as core mechanical equipment of a shield tunnel, and the adaptability between the shield machine and a stratum and the state of the equipment in the engineering construction process are particularly important.
In the process of constructing the subway interval tunnel in China, a part of cities encounter large-area pebble stratums, such as: beijing, Chengdu, Lanzhou, Shenyang, etc. The earth pressure balance shield tunnels in a pebble stratum, and because pebbles are high in strength and strong in abrasiveness and cutters are seriously worn, frequent cabin opening is needed to overhaul the cutters, shield tunneling efficiency is low, construction period is seriously affected, and construction cost is sharply increased. It is therefore necessary to study the wear of the tool in the sandy gravel formation.
The existing research shows that the abrasion of a tunneling cutter of a shield in a sandy gravel stratum is mainly caused by abrasive wear, and an abrasive wear prediction model is provided and derived and calculated based on the abrasive wear. In the calculation formula, the abrasive wear coefficient has a great influence on the tool wear prediction, but at the present stage, no test equipment for the wear coefficient of the tool hard alloy wear-resistant block in the sandy gravel soil exists. The existing abrasive wear coefficient testing equipment in China mainly comprises an MLS-225-like abrasive wear machine, an MDL-10 type dynamic load abrasive wear testing machine and the like, and is usually used for measuring the two-body or three-body abrasive wear coefficient under a single condition, but cannot measure the wear coefficient under the complex condition of sandy gravel soil. The soil abrasiveness is usually determined by LCPC, SAT and other tests abroad, but the tests have various defects. In the LCPC test, the rotating speed of the metal block is uncontrollable, and the soil sample cannot be loaded; the SAT test cannot consider the influence of factors such as load, soil improvement and the like on the wear coefficient.
Considering that the accurate prediction of the abrasion of the cutter can better guide the actual engineering, the research and development of the test method and the equipment for determining the abrasion coefficient of the hard alloy abrasion-resistant block of the cutter in the sandy gravel soil are very scientific.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a sand cobble stratum wear coefficient measuring device is provided, solve the problem that can't be to the wear coefficient survey of the wear-resisting piece of cutter carbide in the sand cobble soil.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a sandy gravel stratum wear coefficient measuring device, includes basic frame, load-bearing unit, driving motor, mount, the alloy block group that awaits measuring, soil body injection unit and data detection subassembly, load-bearing unit is fixed to be set up on the basic frame, driving motor slidable sets up from top to bottom on the basic frame, the mount with driving motor's output shaft transmission is connected, the alloy block group that awaits measuring can dismantle the setting on the mount, soil body injection unit with the inside pipeline intercommunication that passes through of load-bearing unit, data detection subassembly is used for detecting the work data that load-bearing unit, driving motor and soil body injected the unit.
Further, still include air injection unit, bentonite injection unit and loading unit, air injection unit and bentonite injection unit all with the inside pipeline intercommunication that passes through of load cell, the loading unit sets up the top of load cell.
Further, the data detection assembly comprises a torque sensor, a thrust sensor, a pressure sensor, three pressure gauges and three flow meters, wherein the torque sensor and the thrust sensor are arranged on the driving motor, the torque sensor and the thrust sensor are respectively in signal connection with the driving motor, the pressure sensor is arranged on the inner surface of the bearing unit, and the air injection system, the bentonite injection system and the soil injection unit are respectively provided with one pressure gauge and one flow meter on a pipeline communicated with the bearing unit.
Further, the alloy block group to be tested comprises a first alloy block group to be tested and a second alloy block group to be tested, the first alloy block group to be tested and the second alloy block group to be tested are both detachably arranged on the fixed frame, and the first alloy block group to be tested and the second alloy block group to be tested are different in size.
Further, the fixing frame comprises a cross beam and a vertical beam, and the cross beam and the vertical beam are arranged in a crossed manner and fixedly connected; the cross position of the cross beam and the vertical beam is in transmission connection with an output shaft of the driving motor, the first alloy block group to be tested is detachably arranged on the cross beam, and the second alloy block group to be tested is detachably arranged on the vertical beam.
Further, the cross beams and the vertical beams have the same length and are connected in a cross mode in the center position.
Further, the first alloy block group to be tested comprises two first alloy blocks to be tested, and the two first alloy blocks to be tested are respectively hinged to two ends of the cross beam; the second alloy block group to be tested comprises two second alloy blocks to be tested, and the two second alloy blocks to be tested are respectively hinged to two ends of the vertical beam.
Furthermore, the fixing frame further comprises a transmission rod, one end of the transmission rod is fixedly connected with the output shaft of the driving motor, the central axis of the transmission rod is in the same straight line with the central axis of the output shaft of the driving motor, and the other end of the transmission rod is vertically connected with the cross position of the cross beam and the vertical beam.
Further, the basic frame comprises a bottom plate and a support, the bottom plate is arranged at the bottom of the support, the bottom plate and the support are fixedly connected or integrally formed, the bearing unit is fixedly arranged on the bottom plate, and the driving motor can be arranged on the support in a vertically sliding mode.
The utility model provides a sandy gravel stratum wear coefficient measuring device, including basic frame, load-bearing unit, driving motor, mount, the alloy block group that awaits measuring, soil body injection unit and data detection subassembly, the load-bearing unit is fixed to be set up basic frame is last, driving motor can slide the setting from top to bottom basic frame is last, the mount with driving motor's output shaft transmission is connected, the alloy block group that awaits measuring can dismantle the setting on the mount, the soil body injection unit with the inside pipeline intercommunication that passes through of load-bearing unit, data detection subassembly is used for detecting the work data of load-bearing unit, driving motor and soil body injection unit. Therefore, during measurement, collected original soil is injected into the bearing unit through the soil body injection unit, the driving motor drives the fixing frame to rotate, the alloy block group to be measured on the fixing frame rotates along with the rotation, the driving motor is slidably arranged on the basic frame, the fixing frame can rotate and move downwards, in the displacement stroke, the rotation of the alloy block group to be measured can generate abrasion loss, the abrasion loss is converted into abrasion height according to the abrasion loss, the data detection assembly detects related data, the track length of the alloy block group to be measured is calculated, an abrasion curve is drawn according to the abrasion height and the track length, the slope of a normal abrasion stage is obtained, and the value is the abrasion coefficient of the hard alloy in the sand and pebble stratum. Compared with the prior art, the method has the advantages that: the device is simple to operate, the single test is low in cost, the test result is visual, and the abrasive wear coefficient of the hard alloy cutter under the complex condition can be measured.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a sandy gravel stratum wear coefficient measuring device of the present invention;
fig. 2 is a schematic structural view of a fixing frame of the device for measuring the abrasion coefficient of the sandy gravel stratum of the utility model;
fig. 3 is a schematic view of the wear curve of the device for measuring the wear coefficient of the sandy gravel stratum of the utility model.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a basic frame, 101, a bottom plate, 102, a support, 103, a cross rod, 2, a bearing unit, 3, a driving motor, 4, a fixing frame, 401, a cross beam, 402, a vertical beam, 403, a transmission rod, 5, a first alloy block to be tested, 6, a second alloy block to be tested, 7, an air injection unit, 8 and a bentonite injection unit.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "center", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the utility model provides a sand and pebble stratum wear coefficient measuring device, including basic frame 1, load-bearing unit 2, driving motor 3, mount 4, the alloy block group that awaits measuring, soil body injection unit and data detection subassembly, load-bearing unit 2 is fixed to be set up basic frame 1 is last, driving motor 3 can slide the setting from top to bottom on the basic frame 1, mount 4 with driving motor 3's output shaft transmission is connected, the alloy block group that awaits measuring can be dismantled and set up on mount 4, soil body injection unit with the inside pipeline intercommunication that passes through of load-bearing unit 2, data detection subassembly is used for detecting the work data that load-bearing unit 2, driving motor 3 and soil body injection unit. Therefore, during measurement, collected original soil is injected into the bearing unit 2 through the soil body injection unit, the driving motor 3 drives the fixing frame 4 to rotate, the alloy block group to be measured on the fixing frame 4 rotates along with the rotation, the driving motor 3 is slidably arranged on the basic frame 1, the fixing frame 4 can rotate and move downwards, in the displacement stroke, the alloy block group to be measured rotates to generate abrasion loss, the abrasion loss is converted into abrasion height according to the abrasion loss, the data detection assembly detects related data, the track length of the alloy block group to be measured is calculated, an abrasion curve is drawn according to the abrasion height and the track length, and the slope of a normal abrasion stage is obtained, and the value is the abrasion coefficient of the hard alloy in the sand and pebble stratum. Compared with the prior art, the method has the advantages that: the device is simple to operate, the single test is low in cost, the test result is visual, and the abrasive wear coefficient of the hard alloy cutter under the complex condition can be measured.
The utility model discloses a sand cobble stratum wear coefficient measuring device, as shown in fig. 1-3, can also be on the basis of the technical scheme of preceding description: still include air injection unit 7, bentonite injection unit 8 and loading unit, air injection unit 7 and bentonite injection unit 8 all with load cell 2 is inside to pass through the pipeline intercommunication, the loading unit sets up load cell 2's top. Like this through air injection unit 7 to the inside air that blows in of load cell 2, fill bentonite and the content of loading unit cooperation original state soil can adjust the dry density, gradation, the moisture content etc. of the inside soil sample of load cell 2 to load cell 2 through bentonite injection unit 8 to the realization guarantees that the inside soil sample of load cell 2 and the physical and mechanical properties of the original state soil of gathering at first coincide as far as possible, with the accurate nature of assurance test data. Meanwhile, soil sample samples under different soil improvement conditions can be adapted through the amount of injected air, expansive soil and undisturbed soil, so that the wear coefficients of the hard alloy in the sandy gravel stratum under different soil improvement conditions can be obtained. It should be noted that the loading unit acts on the upper side of the bearing unit 2 to pressurize the soil inside the bearing unit 2, and may adopt a manual pressing manner or a mechanical independent pressing manner, and when the mechanical pressing manner is adopted, it is ensured that the pressing portion contacting with the soil does not interfere with the driving motor 3, the fixing frame 4, the alloy block group to be tested, and other components.
The utility model discloses a sand cobble stratum wear coefficient measuring device, as shown in fig. 1-3, can also be on the basis of the technical scheme of preceding description: the data detection assembly comprises a torque sensor, a thrust sensor, a pressure sensor, three pressure gauges and three flow meters, wherein the torque sensor and the thrust sensor are arranged on the driving motor 3, the torque sensor and the thrust sensor are respectively in signal connection with the driving motor 3, the pressure sensor is arranged on the inner surface of the bearing unit 2, and the air injection system, the bentonite injection system and the soil injection unit are respectively provided with one pressure gauge and one flow meter on a pipeline communicated with the bearing unit 2. Like this, through setting up torque sensor, the moment of torsion of thrust sensor and pressure sensor can 3 during operations of real-time supervision driving motor, thrust and rotational speed, pressure sensor then detects the load that receives under this operational environment, in addition, bearing unit 2 respectively with air injection unit 7, respectively set up a pressure gauge and a flowmeter on the pipeline that bentonite injection unit 8 and soil body injection unit communicate, can detect the injection pressure and the injection volume of every pipeline, in whole wear coefficient measurement process, can be comprehensive, timely acquisition test data, make things convenient for the experimenter to carry out the analysis of test data, compare.
The utility model discloses a sand cobble stratum wear coefficient measuring device, as shown in fig. 1-3, can also be on the basis of the technical scheme of preceding description: the alloy block group to be tested comprises a first alloy block group to be tested and a second alloy block group to be tested, the first alloy block group to be tested and the second alloy block group to be tested are both detachably arranged on the fixed frame 4, and the first alloy block group to be tested and the second alloy block group to be tested are different in size. Therefore, two groups of alloy block groups to be measured with different sizes are adopted in the method, before the measuring device works, the first alloy block group to be measured and the second alloy block group to be measured need to be weighed respectively, after the measuring device works, the first alloy block group to be measured and the second alloy block group to be measured are weighed respectively, then the abrasion qualities before and after the measurement of the first alloy block group to be measured and the second alloy block group to be measured can be obtained respectively, and the abrasion qualities of the first alloy block group to be measured and the second alloy block group to be measured are converted into the abrasion heights respectively.
The utility model discloses a sand cobble stratum wear coefficient measuring device, as shown in fig. 1-3, can also be on the basis of the technical scheme of preceding description: the fixed frame 4 comprises a cross beam 401 and a vertical beam 402, and the cross beam 401 and the vertical beam 402 are arranged in a crossed manner and fixedly connected; the cross position of the cross beam 401 and the vertical beam 402 is in transmission connection with an output shaft of the driving motor 3, the first alloy block group to be tested is detachably arranged on the cross beam 401, and the second alloy block group to be tested is detachably arranged on the vertical beam 402. The further preferred technical scheme is as follows: the cross beam 401 and the vertical beam 402 have the same length and are connected in a cross manner at the center position. Like this, because crossbeam 401 is the same with perpendicular roof beam 402's length, and put cross connection at the central point, the first alloy block group that awaits measuring, the second alloy block group that awaits measuring that sets up at crossbeam 401 and perpendicular roof beam 402 both ends so can guarantee unanimously at the stroke of working process, need not to measure by one, makes things convenient for the experimenter to carry out data analysis. Specifically, the cross beam 401 and the vertical beam 402 both adopt circular hollow steel pipes to reduce resistance in the rotating process, the size of the steel pipes is phi 25mm multiplied by 2mm, and bolt connecting ports are welded at both ends of the cross beam 401 and the vertical beam 402 and used for installing a first alloy block group to be tested and a second alloy block group to be tested.
The utility model discloses a sand cobble stratum wear coefficient measuring device, as shown in fig. 1-3, can also be on the basis of the technical scheme of preceding description: the first alloy block group to be tested comprises two first alloy blocks to be tested 5, and the two first alloy blocks to be tested 5 are respectively hinged to two ends of the cross beam 401; the second alloy block group to be tested comprises two second alloy blocks 6 to be tested, and the two second alloy blocks 6 to be tested are respectively hinged to two ends of the vertical beam 402. Therefore, the size of the first alloy block to be measured 5 is 25mm × 50mm, the size of the second alloy block to be measured 6 is 25mm × 40mm, in an experiment, the length and the width of the first alloy block to be measured 5 and the length and the width of the second alloy block to be measured 6 are ensured to be consistent as much as possible, the heights are different, one variable is controlled, and the error in the process of converting the wear height after wear consumption can be reduced to the minimum; the points to be noted are: crossbeam 401 and perpendicular roof beam 402 vertical cross set up in this application, like this, two first alloy pieces 5 and two second alloy pieces 6 that await measuring can effectively avoid because too closely leading to measuring the precision to descend between two arbitrary adjacent alloy pieces that await measuring for crossbeam 401 and perpendicular roof beam 402 cross position central symmetry, and then guarantee the accuracy of experimental data in the measurement phase.
The utility model discloses a sand cobble stratum wear coefficient measuring device, as shown in fig. 1-3, can also be on the basis of the technical scheme of preceding description: the fixed frame 4 further comprises a transmission rod 403, one end of the transmission rod 403 is fixedly connected with the output shaft of the driving motor 3, the central axis of the transmission rod 403 and the central axis of the output shaft of the driving motor 3 are on the same straight line, and the other end of the transmission rod 403 is vertically connected with the crossing position of the cross beam 401 and the vertical beam 402. Like this, set up transfer line 403 in order to guarantee that mount 4 descends the during operation in the interior of load cell 2, the inside soil body of load cell 2 does not take place to interfere with driving motor 3, if take place to interfere the phenomenon, can influence torque sensor, thrust sensor, pressure sensor's measuring result, for avoiding appearing above-mentioned condition, this application sets up transfer line 403 and transmits to guarantee that data effectively measures. The transmission rod 403 is a round hollow steel pipe with the size of phi 25mm multiplied by 2 mm.
The utility model discloses a sand cobble stratum wear coefficient measuring device, as shown in fig. 1-3, can also be on the basis of the technical scheme of preceding description: the basic frame 1 comprises a bottom plate 101 and a bracket 102, the bottom plate 101 is arranged at the bottom of the bracket 102, the bottom plate 101 is fixedly connected with or integrally formed with the bracket 102, the bearing unit 2 is fixedly arranged on the bottom plate 101, and the driving motor 3 is arranged on the bracket 102 in a vertically sliding manner. Thus, the bottom plate 101 is arranged to adapt to the ground in different working environments, the effective contact area between the whole equipment and the ground is ensured as much as possible, and the shaking phenomenon in the working process is avoided, two supports 102 are selected and vertically arranged on the bottom plate 101, the bearing unit 2 is placed in the middle of the two supports 102, the two supports 102 are provided with slide rails on the inner layer surface, the stroke of up-and-down movement provided by the slide rails is 1500mm, in order to facilitate the up-and-down sliding of the drive motor 3 on the supports 102, the drive motor 3 is fixedly arranged on the cross rod 103, the two ends of the cross rod 103 are in sliding fit with the slide rails on the two supports 102, the drive mode of the cross rod 103 can adopt a gear chain fit mode, also can adopt an electric push rod mode, also can adopt a hydraulic oil pipe mode for driving, the drive mode can adopt a conventional drive structure in the market, the applicant does, the material is Q245 steel, the wall thickness is 20mm, and the size of an inner cavity is phi 1000mm multiplied by 1000 mm.
When the device for measuring the abrasion coefficient of the sandy gravel stratum provided by the utility model works, undisturbed soil is injected into the bearing unit 2 through the soil body injection unit; recording the initial weight of the alloy block group to be tested and then installing the alloy block group on the fixed frame 4; placing the fixed frame 4 on the surface of undisturbed soil, starting the driving motor 3, and driving the fixed frame 4 to move downwards for a specified stroke; disassembling the alloy block group to be tested from the fixed frame 4 and recording the worn weight of the alloy block group to be tested; calculating the abrasion height according to the weight difference of the alloy block group to be detected before and after abrasion, and calculating the track length of the alloy block group to be detected according to the data detected by the data detection assembly; and drawing a wear curve according to the wear height and the track length, and calculating to obtain a wear coefficient. Thus, the alloy block group to be measured is accurately weighed by an electronic balance, and is installed and fixed on a fixed frame 4, the alloy block group to be measured is arranged on the surface of the original soil body in a bearing unit 2, a load condition matched with the actual working condition is loaded above the original soil body, the rotating speed of a driving motor 3 and the descending speed of the driving motor 3 are set, the driving motor 3 is started, when the driving motor 3 moves downwards to complete the appointed stroke, the fixed frame 4 is lifted out of the bearing unit 2, the alloy block group to be measured is detached, soil attached to the surface of the alloy block group to be measured is cleaned, the weight is recorded, the abraded weight of the alloy block group to be measured is recorded, experimental data needs to be processed, and the track length of the alloy block group; and drawing a wear curve according to the wear height and the track length, and calculating to obtain the wear coefficient of the hard alloy in the sandy gravel stratum.
Taking the example that the field line magnetic-interval tunnel of the new Beijing penetrates through the stratum:
the tunnel crossing stratum of the field linear magnetic one-interval tunnel of the Beijing new airport mainly comprises the following steps: fine sand, fine clay, fine sand, pebble, fine clay, sandy silt, fine medium sand and pebble. Wherein the pebble-crossing pebble and the pebble alloy block are worn most seriously. Pebble round gravel: compact, the grain diameter is 2-4cm, the maximum is 13cm, the grain diameter is larger than 2cm, the content is 60 percent, and the medium coarse sand is filled. Pebble round gravel: compact, 3-6cm in grain size, 18cm in maximum, more than 2cm in grain size, more than 65-75% in content, and filled with medium coarse sand. Undisturbed soil was obtained on site and subjected to a wear coefficient measurement test.
The test procedure was as follows:
(1) the driving motor 3, the air injection unit 7, the bentonite injection unit 8, the loading unit and the data detection assembly in the debugging device ensure that the debugging device can work normally.
(2) Accurately weighing the first alloy block to be measured 5 and the second alloy block to be measured 6 by using an electronic balance, and recording the average value of the weights of the two first alloy blocks to be measured 5 and the two second alloy blocks to be measured 6 as MoAnd moAnd respectively mount and fix themPositioned at both ends of the cross beam 401 and the vertical beam 402.
(3) The method for measuring the physical parameters of the undisturbed soil to be measured comprises the following steps: the dry density, the grading, the water content and the like are loaded into the equipment bearing unit 2 and then are pre-pressed and the like, so that the physical and mechanical properties of the original soil are matched as much as possible.
(4) And placing the cross beam 401 and the vertical beam 402 with the first alloy block to be tested 5 and the second alloy block to be tested 6 on the surface of the original soil body in the bearing unit 2, and loading a load condition matched with the actual working condition above the cross beam.
(5) The rotating speed omega of the driving motor 3 and the descending speed v of the driving motor 3 are set. And starting the driving motor 3, starting the wear coefficient measurement, ensuring that the forward rotation and reverse rotation time is the same when the driving motor 3 rotates, and collecting relevant test data such as the propelling force, the torque and the like in real time through a data acquisition system.
(6) When the driving motor 3 moves downwards to complete the whole stroke (the single stroke is 1M), the first alloy block 5 to be detected and the second alloy block 6 to be detected are lifted out of the bearing unit 2, soil attached to the surfaces of the alloy blocks is respectively dismounted and cleaned, the weights are recorded, and the average value of the weights of the two first alloy blocks 5 to be detected and the two second alloy blocks 6 to be detected is recorded as M1And m1。
(7) And (3) repeating the step sequence of the step 6, and recording the average weight of the first alloy block to be detected 5 and the average weight of the second alloy block to be detected 6 after the driving motor 3 drives the cross beam 401 and the vertical beam 402 to move downwards for n strokes: mnAnd mn。
(8) The wear coefficient determination test was completed over N repetitions (which were adjusted for different wear conditions).
After the test is completed, the test data needs to be processed, and then the wear coefficient of the hard alloy wear-resistant block in the sandy gravel stratum is obtained through analysis. The specific analysis method is as follows:
(1) calculating the wear quality of the alloy block after each stroke, and calculating the wear quality delta M of the first alloy block to be measured 5 and the second alloy block to be measured 6 after the nth strokenAnd Δ mnThe calculation formulas are described in formula 1 and formula 2.
n 0 nΔM＝M-M (1)
n 0 nΔm＝m-m (2)
(2) The wear mass is converted into a wear height. The abrasion height of the first alloy block 5 to be measured after the nth stroke is recorded as HnThe abrasion height of the second alloy block 6 to be measured is recorded as hnThe conversion formula is
Wherein S is the cross section area of the first alloy block to be tested 5 and the second alloy block to be tested 6, 0.025 x 0.025 ═ 6.25e-4m2(ii) a Rho is the density of the first alloy block to be measured 5 and the second alloy block to be measured 6.
(3) Calculating the single-stroke track length L of the first alloy block to be measured 5 and the second alloy block to be measured 6 by the following calculation method
In the formula, R is the distance from the centers of the first alloy block to be tested 5 and the second alloy block to be tested 6 to the intersection center of the cross beam 401 and the vertical beam 402; omega is the rotation angular velocity; v is the down speed of the drive motor 3.
(4) And drawing a wear curve of the first alloy block to be tested 5 and the second alloy block to be tested 6, and calculating to obtain a slope k in a normal wear stage, wherein the value is the wear coefficient of the hard alloy in the sandy gravel stratum.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. The utility model provides a sand cobble stratum wear coefficient measuring device which characterized in that: the device comprises a basic frame (1), a bearing unit (2), a driving motor (3), a fixing frame (4), an alloy block group to be detected, a soil body injection unit and a data detection assembly, wherein the bearing unit (2) is fixedly arranged on the basic frame (1), the driving motor (3) can be arranged on the basic frame (1) in a vertically sliding mode, the fixing frame (4) is in transmission connection with an output shaft of the driving motor (3), the alloy block group to be detected is detachably arranged on the fixing frame (4), the soil body injection unit is communicated with the inside of the bearing unit (2) through a pipeline, and the data detection assembly is used for detecting working data of the bearing unit (2), the driving motor (3) and the soil body injection unit.
2. The sand and gravel formation wear coefficient measuring device according to claim 1, wherein: still include air injection unit (7), bentonite injection unit (8) and loading unit, air injection unit (7) and bentonite injection unit (8) all with bear unit (2) inside through the pipeline intercommunication, the loading unit sets up the top of bearing unit (2).
3. The sand and gravel formation wear coefficient measuring device according to claim 2, wherein: the data detection assembly comprises a torque sensor, a thrust sensor, a pressure sensor, three pressure gauges and three flow meters, wherein the torque sensor and the thrust sensor are arranged on the driving motor (3), the torque sensor and the thrust sensor are respectively connected with the driving motor (3) through signals, the pressure sensor is arranged on the inner surface of the bearing unit (2), and the air injection unit, the bentonite injection unit and the soil injection unit are respectively provided with one pressure gauge and one flow meter on a pipeline communicated with the bearing unit (2).
4. The sand and gravel formation wear coefficient measuring device according to claim 1, wherein: the alloy block group to be tested comprises a first alloy block group to be tested and a second alloy block group to be tested, the first alloy block group to be tested and the second alloy block group to be tested are both detachably arranged on the fixed frame (4), and the first alloy block group to be tested and the second alloy block group to be tested are different in size.
5. The sand and gravel formation wear coefficient measuring device according to claim 4, wherein: the fixing frame (4) comprises a cross beam (401) and a vertical beam (402), and the cross beam (401) and the vertical beam (402) are arranged in a crossed manner and fixedly connected; the crossed position of the cross beam (401) and the vertical beam (402) is in transmission connection with an output shaft of the driving motor (3), the first alloy block group to be tested is detachably arranged on the cross beam (401), and the second alloy block group to be tested is detachably arranged on the vertical beam (402).
6. The sand and gravel formation wear coefficient measuring device according to claim 5, wherein: the cross beam (401) and the vertical beam (402) are the same in length and are connected in a cross mode in the center position.
7. The sand and gravel formation wear coefficient measuring device according to claim 6, wherein: the first alloy block group to be tested comprises two first alloy blocks (5) to be tested, and the two first alloy blocks (5) to be tested are respectively hinged to two ends of the cross beam (401); the second alloy block group to be tested comprises two second alloy blocks (6) to be tested, and the two second alloy blocks (6) to be tested are respectively hinged to two ends of the vertical beam (402).
8. The sand and gravel formation wear coefficient measuring device according to claim 5, wherein: the fixing frame (4) further comprises a transmission rod (403), one end of the transmission rod (403) is fixedly connected with an output shaft of the driving motor (3), the central axis of the transmission rod (403) is in the same straight line with the central axis of the output shaft of the driving motor (3), and the other end of the transmission rod (403) is vertically connected with the cross position of the cross beam (401) and the vertical beam (402).
9. The sand and gravel formation wear coefficient measuring device according to any one of claims 1 to 8, wherein: the basic frame (1) comprises a bottom plate (101) and a support (102), the bottom plate (101) is arranged at the bottom of the support (102), the bottom plate (101) and the support (102) are fixedly connected or integrally formed, the bearing unit (2) is fixedly arranged on the bottom plate (101), and the driving motor (3) can be arranged on the support (102) in a vertically sliding mode.
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| CN202020980202.8U CN212540018U (en) | 2020-06-02 | 2020-06-02 | Sand cobble stratum wear coefficient measuring device |
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| CN202020980202.8U CN212540018U (en) | 2020-06-02 | 2020-06-02 | Sand cobble stratum wear coefficient measuring device |
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