CN110470498A - A kind of power shovel-soil contact simulation experiment method - Google Patents
A kind of power shovel-soil contact simulation experiment method Download PDFInfo
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- CN110470498A CN110470498A CN201910718441.8A CN201910718441A CN110470498A CN 110470498 A CN110470498 A CN 110470498A CN 201910718441 A CN201910718441 A CN 201910718441A CN 110470498 A CN110470498 A CN 110470498A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention provides a kind of power shovel-soil contact simulation experiment method, which mainly includes carrying out structure to power shovel to simplify, and level board, L-type plate and these three analog boards of U-shaped board are respectively adopted and carry out the trizonal structural simulation of scraper bowl；Simulation test device is contacted using soil, the contact simulation test of soil is carried out to level board, L-type plate and U-shaped board respectively, during test, record load number t, soil adhesion mass M (t) and the soil adhesion area S (t) of different analog boards, according to test result, in conjunction with Soil adhesion Analysis on Mechanism, local shape remodeling is carried out for different analog boards, to reduce contact and degree of adhesion of the test soil to scraper bowl；The present invention realizes the contact process of relatively simple simulation power shovel and soil, and targetedly carries out shape remodeling to the minor structure of power shovel according to test data, to improve the working efficiency of excavator.
Description
Technical field
The application belongs to technical field of engineering machinery, and in particular to a kind of power shovel-soil contact simulation test side
Method.
Background technique
Excavator, also known as excavating machinery or excavator are to be excavated to be higher or lower than the material for holding machine side with scraper bowl, and fill
Enter haulage vehicle or unloads to the earthmoving machinery of pusher field；As a kind of fast and efficiently engineering machinery, the hair of excavator in recent years
It opens up relatively fast, has become one of most important engineering machinery in engineering construction.
The working efficiency of excavator is always the main indicator for measuring excavator state of the art, is excavator complete machine
The comprehensive of many factors such as energy, machine hand qualification, digging operation object, working condition and environment embodies, and among these, digs
The material that pick machine excavates is mainly soil, silt or the soil after pre- pine, and is frequently necessary in more wet soil
Operation in earth environment, such as swampy terrain or wet harbour etc., these damp soils are very easy to lead to the viscous of soil
Attached problem, for example, soil adhesion to excavator walking mechanism or crawler belt when, the ground drag that is subject to will when excavator is walked
Increase, energy consumption when so as to cause excavator walking increases；For another example, when damp soil is adhered to the scraper bowl surface of excavator
When, the soil of adherency will greatly reduce the working efficiency of excavator.
In the prior art, the research that the influence for operation soil to excavator working efficiency carries out is less and most of
It concentrates on being studied using finite element technique, for example, Deng Zhiqiang has been delivered, " power shovel-soil contact system is limited
Meta analysis and Bionic Design " touches work of the top half of native face conducting wire due to mainly playing container based on power shovel
With not changing, the circular arc of lower half portion is changed to the bionical curve as made of the proportional scaling of animal pawl toe inner outline, then
It has been respectively compared the cutting ability of bionical power shovel and conventional excavators scraper bowl using FInite Element, and has found bionical excavation
Mechanical shovel bucket can advance biggish distance in the soil, soil unit it is vertical it is positive obtain larger displacement, produced in vertical negative sense
Raw lesser distance, i.e. input power is identical, and the useful work done is larger, improves the working efficiency of excavator.
However, the mechanism that power shovel is contacted and adhered to soil, shorter mention to test side in the prior art
Method studies it, meanwhile, when being contacted using finite element method research power shovel with soil and sticking problem, often
Contact area using the surface area of scraper bowl as soil and scraper bowl, and soil contact and adherency are carried out to simulation architecture based on this
The explanation of mechanism does not carry out parameter selection to the true adhesion process of soil, so as to cause the soil obtained by emulation technology
Research conclusion relatively true theory is adhered to, therefore, it is necessary to which the contact and sticking problem progress to power shovel with soil are new
Research so that result of study is more true, to provide research material and theory support to improve excavator working efficiency.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of power shovel-soil to contact simulation experiment method, pass through
Structure is carried out to power shovel to simplify, thus realize the contact process of relatively simple simulation power shovel and soil,
And shape remodeling is targetedly carried out to the minor structure of power shovel according to test data, to reduce soil in digger shovel
Degree of adhesion on bucket, to improve the working efficiency of excavator.
Above-mentioned purpose according to the present invention, proposes a kind of power shovel-soil contact simulation experiment method, and this method is used
In determining how to improve to reduce the contact area of soil and scraper bowl and degree of adhesion bucket configuration, to improve excavation
The working efficiency of machine, which is characterized in that this method comprises the following steps:
Step 1: structure being carried out to power shovel and is simplified, is reduced to wrap by scraper bowl according to the difference of the interior shape of scraper bowl
Include central area, corner area and heel teeth region, and be respectively adopted level board, L-type plate and these three analog boards of U-shaped board into
The trizonal structural simulation of row scraper bowl；
Step 2: the theory analysis of soil contact and adherency being carried out to above-mentioned different analog boards, and determines level respectively
Normal adhesion force region and tangential adhesion strength region in plate, L-type plate and U-shaped board, by different viscous on different analog boards
Attached power region is marked, and convenient contact and adhesion process subsequently through observation soil contacts the mechanism with adherency to soil
It is analyzed；
Step 3: simulation test device being contacted using soil, soil is carried out to level board, L-type plate and U-shaped board respectively
Simulation test is contacted, during test, load number t, soil adhesion mass M (t) and the soil for recording different analog boards are viscous
Attached area S (t), and the true sticking coefficient I (t) for obtaining soil is calculated by following formula:
Step 4: according to test result data, drawing between the true sticking coefficient I (t) of test soil and load number t
Graph of relation, the test data figure of comprehensive three analog boards simulates excavator in operation, test soil and scraper bowl it
Between contact and adhesion process；
Step 5: according to test result data, drawing out the soil adhesion area S (t) and load number t of different analog boards
Between graph of relation, simulate excavator in operation, test soil adhesion area of the soil on different analog boards
Change procedure, the mechanism that moisture film is formed between analog board and test soil, analysis test soil contact between scraper bowl
Adhere to detailed process；
Step 6: according to the analysis of test result and soil adhesion mechanism that the step 5 obtains, to avoid moisture film shape
As Further aim, local shape improvement is carried out to different analog boards, to obtain new analog board, step 1-4 is repeated, obtains
Relationship of the new analog board between the true sticking coefficient I (t) and load number t of the test soil under identical test operating condition is bent
Line chart verifies analog board by comparative simulation plate in the test soil before and after remodeling and the true sticking coefficient between scraper bowl
Remodeling, if contact and degree of adhesion of the test soil to scraper bowl are advantageously reduced, if so, carrying out step 7；
Step 7, moisture content, the soil types for changing test soil, repeat above-mentioned test procedure 1-4, obtain different tests
True sticking coefficient variation between the corresponding soil of soil and scraper bowl, provides soil when carrying out actual job operating condition for excavator
The theoretical reference of earth contact and adherency.
Preferably, in the step 2, when soil and analog board close contact, contact surface can stick together, and unit connects
Contacting surface area method is to the pulling-out force of projected area, as normal adhesion force of the soil to analog board；
When relative displacement occurs along contact surface tangential direction between soil and analog board, i.e., soil is along simulation plate surface
When mobile, soil is to the adherency resistance of simulation plate surface, as tangent line adhesion strength of the soil to simulation plate surface.
Preferably, in the step 3, the soil contact simulation test device includes braced frame, actuator, speed
Controller tests native case and camera composition, wherein
The vertical arrangement of actuator, one end are fixedly connected with braced frame, the output rod and test mould of the other end
Quasi- plate connection, driving analog board are carried out in vertical direction in elevating movement, repeatedly penetration test soil case, simulate power shovel
Working condition；
The speed control and actuator are electrically connected, for controlling movement velocity and the direction of actuator stem；
The native case setting of the test at suitable distance, is arranged inside test soil, passes through change immediately below the actuator
Moisture content, the soil types for testing soil, can simulate the different soils environment of the real work of excavator；
The camera is for recording different analog boards after centainly load number, from testing when passing through out in native case
Soil adhesion situation after handling the photo of camera shooting, obtains the change procedure of the adhesive area of test soil, and
The specific data of soil adhesion area S (t).
Preferably, described to can be 1 time, 2 times or 5 times every centainly load number.
Preferably, described that different analog boards are carried out local shape to improve being specifically to improve different moulds in the step 6
The boundary wire shaped of quasi- plate, with the formation of the moisture film between failure test soil and analog board contact surface.
Compared with the prior art, the beneficial effects of the present invention are:
(1) present invention is respectively adopted analog board of different shapes and is simulated according to the design feature of power shovel, from
And the contact process of power shovel and soil can be simulated by simple load test, have compared to existing basis
First method is limited to simulate the contact process of scraper bowl and soil, the present invention is without carrying out finite element modeling, finite element unit divide with
And the operation such as definiens of boundary layer, test process is simple, and test data is true and reliable；
(2) normal direction of the invention by different analog boards and tangential adhesion strength region are marked, and cooperate camera
It uses, by camera to the record of the contact process of different analog boards and soil, obtains true soil adhesion area, use
True soil adhesion area S (t) uses the contact area s of scraper bowl to substitute in the prior artScraper bowlTo calculate the adherency system of soil
Number, the true sticking coefficient I (t) of the soil of acquisition can really reflect degree of adhesion of the soil on scraper bowl or analog board,
Meanwhile the image of combining camera acquisition and observing the normal direction marked on soil adhesion region and analog board and tangential adhesion zone
Domain can develop the soil adhesion phenomenon of different analog board or scraper bowl region, mainly have with normal adhesion force that it is subject to
It closes, or related with the tangential adhesion strength that it is subject to, so as to binding isotherm and test data, to soil and power shovel
Contact and adhesion process carry out scientific explarnation ensure that subsequent so that experimental study achievement of the invention is more true and reliable
The science of excavator working efficiency is improved to the part remodeling of power shovel；
(3) present invention further obtains soil by camera to the record of the contact process of different analog boards and soil
The change procedure of soil adhesion area on different analog boards, and the machine that moisture film is formed between analog board and test soil
Reason is set out, and analysis test soil contact between scraper bowl adheres to detailed process, based on the proposition of moisture film analysis principle to scraper bowl knot
The remodeling of structure, can be more accurate and efficiently reduces adherency of the soil to power shovel, to improve the practical work of excavator
Working efficiency when industry.
Detailed description of the invention
Fig. 1 is power shovel interior shape schematic diagram of the invention；
Fig. 2 is the normal direction of different analog boards of the invention and the schematic diagram in tangential adhesion strength region；
Fig. 3 is the simplified schematic diagram of soil contact simulation test device of the invention；
Fig. 4 is the schematic diagram that the boundary line of the invention to L-type plate is retrofited；
Fig. 5 is the pass of L-type plate of the invention between the true sticking coefficient I (t) of soil before and after remodeling and load number t
It is curve graph.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.Reality in being described below
It applies example to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.The sheet defined in the following description
The basic principle of invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and without departing from this
The other technologies scheme of the spirit and scope of invention.
Figures 1 and 2 show that a kind of power shovel of embodiment according to the present invention-soil contacts simulation experiment method
Flow chart.
Specifically, a kind of power shovel proposed by the present invention-soil contact simulation experiment method is mainly used for analyzing such as
What improves bucket configuration to reduce the contact area of soil and scraper bowl and degree of adhesion, to improve the work of excavator
Efficiency, the test method specifically comprise the following steps:
Step 1: structure being carried out to power shovel and is simplified, is reduced to wrap by scraper bowl according to the difference of the interior shape of scraper bowl
Include central area, corner area and heel teeth region, and be respectively adopted level board, L-type plate and these three analog boards of U-shaped board into
The trizonal structural simulation of row scraper bowl；
In the present invention, as shown in Figure 1, the interior shape of power shovel can be generally divided into central area, corner regions
Domain and three, heel teeth region part, and central area curvature is smaller, corner area curvature close to 90 ° of corners, heel teeth region
Every two is red constitutes a U-shaped structure, therefore, is simulated respectively with level board, L-type plate and these three analog boards of U-shaped board
The different minor structures of power shovel are enabled to power shovel-soil contact research in the base for guaranteeing result reliability
Relative simplicity on plinth is conducive to the development of experimental study.
Step 2: the theory analysis of soil contact and adherency being carried out to above-mentioned different analog boards, and determines level respectively
Normal adhesion force region and tangential adhesion strength region in plate, L-type plate and U-shaped board, by different viscous on different analog boards
Attached power region is marked, and convenient contact and adhesion process subsequently through observation soil contacts the mechanism with adherency to soil
It is analyzed；
When soil and analog board are in close contact, contact surface can stick together, per unit contact area normal direction projected area
The normal adhesion force of pulling-out force, as soil to analog board；
When relative displacement occurs along contact surface tangential direction between soil and analog board, i.e., soil is along simulation plate surface
When mobile, soil is to the adherency resistance of simulation plate surface, as tangent line adhesion strength of the soil to simulation plate surface.
As shown in Fig. 2, as schematical, respectively with thick dashed line represent level board, L-type plate and U-shaped board these three
Normal adhesion force region on analog board, and in specific test, normal direction can be marked using the paintbrush of different colours and cut
To adhesion strength region, why to mark different analog boards normal direction and tangential adhesion strength region, be in order to by observation soil
Contact and adhesion process, to soil contact with adhere to mechanism analyze, thus guarantee to scraper bowl retrofit with raising
The science of excavator working efficiency.
Step 3: simulation test device being contacted using soil, soil is carried out to level board, L-type plate and U-shaped board respectively
Simulation test is contacted, during test, load number t, soil adhesion mass M (t) and the soil for recording different analog boards are viscous
Attached area S (t), and the true sticking coefficient I (t) for obtaining soil is calculated by following formula:
In a preferred embodiment, in conjunction with attached drawing 3, above-mentioned soil contact simulation test device includes braced frame 1, actuating
Device 2, speed control 3 test native case 4 and camera (not shown) composition, wherein
The vertical arrangement of above-mentioned actuator 2, one end are fixedly connected with braced frame 1, and the output rod of the other end and test are used
Analog board 5 connects, and driving analog board 5 is carried out in vertical direction in elevating movement, repeatedly penetration test soil case 4, and simulation is excavated
The working condition of mechanical shovel bucket；
Above-mentioned speed control 3 is electrically connected (attached drawing 3 is not shown) with actuator 2, for controlling the output rod of actuator 2
Movement velocity and direction, realize orderly lifting；
Above-mentioned test soil case 4 is arranged at 2 underface suitable distance of actuator, test soil is arranged inside, by changing
Moisture content, the soil types for becoming test soil, can simulate the different soils environment of the real work of excavator；
Above-mentioned camera for recording different analog boards 5 after centainly load number, from test passed through out in native case 4 when
Soil adhesion situation, to camera shooting photo handle after, obtain test soil adhesive area change procedure, with
And the specific data of soil adhesion area S (t).
The use of simulation test device is contacted by above-mentioned soil, and load repeatedly can be carried out to different analog boards,
Analog board 5 is under the load of actuator 2, penetration test soil case repeatedly, to reach the effect of simulation power shovel normal operation
Fruit can be obtained different analog boards 5 with penetration test soil case by the weighing to the analog board after centainly load number
The variation of 4 numbers and the soil adhesion quality of generation, change of the camera to soil adhesion region on analog board 5 during compatibility test
Change, can be obtained the change procedure in soil adhesion region and area on different analog boards by simple image procossing
In the prior art, in order to quantify soil to the adhesion process of power shovel, usually using the contact area of scraper bowl
SScraper bowlCalculate the sticking coefficient of soil, i.e.,
And in the present invention, simulation test discovery is contacted by carrying out power shovel-soil, for each analog board
For, different plate regions is tested in loading procedure, and the degree of adhesion of soil is not identical, therefore, for more true reflection
Contact and adhesion of the analog board with soil out can be ignored on analog board there is no the region of soil adhesion and area,
The contact area S for using scraper bowl in the prior art is substituted using true soil adhesion area S (t)Scraper bowlTo calculate the viscous of soil
Attached coefficient, the true sticking coefficient I (t) of the soil of acquisition can really reflect adherency journey of the soil on scraper bowl or analog board
Degree, meanwhile, the image of combining camera acquisition simultaneously observes the normal direction marked on soil adhesion region and analog board and tangential adhesion strength
Region can develop the soil adhesion phenomenon of different analog board or scraper bowl region, the normal adhesion force being mainly subject to it
It is related or related with the tangential adhesion strength that it is subject to, this be also why need in the present invention it is prior to different analog boards
Mark normal direction and tangential adhesion strength region and need during the test every centainly load number after, need using phase
The adherency situation that machine passes through out analog board after testing native case carries out photographing to record reason for it and core of the invention is invented
One of point.
In addition, preferably, can be 1 time, 2 times or 5 times every centainly load number.
Step 4: according to test result data, drawing between the true sticking coefficient I (t) of test soil and load number t
Graph of relation, the test data figure of comprehensive three analog boards simulates excavator in operation, test soil and scraper bowl it
Between contact and adhesion process；
Since level board, L-type plate and U-shaped board these three analog boards simulate the different partial zones of power shovel respectively
Domain obtains the true sticking coefficient I (t) of soil of different analog boards with load number t by the load test to different analog boards
Between graph of relation, the true sticking coefficient curve graph of three analog boards is integrated on the same coordinate system, can be obtained
Adherency soil on scraper bowl with its work times relation curve analogous diagram, compared to it is existing according to finite element method come mould
The contact process of quasi- scraper bowl and soil, finite element modeling, finite element unit divides and definiens of boundary layer without carrying out by the present invention
Deng operation, test process is simple, and test data is true and reliable.
Step 5: according to test result data, drawing out the soil adhesion area S (t) and load number t of different analog boards
Between graph of relation, simulate excavator in operation, test soil adhesion area of the soil on different analog boards
Change procedure, the mechanism that moisture film is formed between analog board and test soil, analysis test soil contact between scraper bowl
Adhere to detailed process；
It is found based on experimental study of the invention, for the test soil of certain moisture content, when the boundary line of analog board exists
When firmly pushing test soil under the load driver power effect of actuator, moisture film will form between analog board and test soil,
The test soil of adherency can become to be saturated in borderline region first, this is mainly caused by effect by normal adhesion force, with
The continuous load of actuator, the soil of adherency starts to extend to the two sides of boundary line, to be formed and analog board boundary line side
Contact, and tangential adhesion strength is generated, it then tests soil and the side of analog board forms moisture film again, so that test soil is viscous
It is attached on the side of analog board boundary line；Based on the studies above, present invention discover that the boundary wire shaped of analog board is to test soil
Contact and degree of adhesion have significant impact.
Step 6: according to the analysis of test result and soil adhesion mechanism that above-mentioned steps 5 obtain, to avoid moisture film shape
As Further aim, local shape improvement is carried out to different analog boards, to obtain new analog board, step 1-4 is repeated, obtains
Relationship of the new analog board between the true sticking coefficient I (t) and load number t of the test soil under identical test operating condition is bent
Line chart verifies analog board by comparative simulation plate in the test soil before and after remodeling and the true sticking coefficient between scraper bowl
Remodeling, if contact and degree of adhesion of the test soil to scraper bowl are advantageously reduced, if so, carrying out step 7；
Step 7, moisture content, the soil types for changing test soil, repeat above-mentioned test procedure 1-4, obtain different tests
True sticking coefficient variation between the corresponding soil of soil and scraper bowl, provides soil when carrying out actual job operating condition for excavator
The theoretical reference of earth contact and adherency.
In a preferred embodiment, above-mentioned to be specifically to the progress local shape improvement of different analog boards in above-mentioned steps 6
The boundary wire shaped of different analog boards is improved, with the formation of the moisture film between failure test soil and analog board contact surface.
Of the invention finally, as schematical, the improving measuress during one group of present invention test, ginseng are provided
It according to attached drawing 4, retrofits to the boundary line of L-type plate, a cornerite is set on the boundary line of original L-type plate, to attempt to subtract
The tangential adhesion strength region of small soil and L-type plate, attached drawing 5 is shown retrofit to L-type plate after, moisture content be 12% examination
It tests under soil the true sticking coefficient I (t) for carrying out load test acquisition and loads the graph of relation between number t, in test
Every load is primary, and just the soil of adherency is weighed and taken pictures, from attached drawing 5 as can be seen that the soil of the L-type plate after remodeling
Degree of adhesion has apparent reduction, illustrates the boundary line remodeling for carrying out part to power shovel, can avoid down to a certain degree
The moisture film contacted between soil and scraper bowl is formed, to reduce contact and degree of adhesion of the soil with scraper bowl.
It should be understood by those skilled in the art that the embodiment of the present invention in foregoing description and attached drawing be only used as citing without
The limitation present invention.The purpose of the present invention has been fully and effectively achieved.Function and structural principle of the invention is in embodiment
Middle displaying and explanation, under without departing from principle, implementation method of the invention can have any form or modification.
Claims (5)
1. a kind of power shovel-soil contacts simulation experiment method, this method is for determining how to change bucket configuration
Into the contact area and degree of adhesion to reduce soil and scraper bowl, to improve the working efficiency of excavator, which is characterized in that should
Method includes the following steps:
Step 1: structure being carried out to power shovel and is simplified, different according to the interior shape of scraper bowl simply include scraper bowl
Heart district domain, corner area and heel teeth region, and level board, L-type plate and U-shaped board these three analog boards are respectively adopted and are shoveled
Struggle against trizonal structural simulation；
Step 2: the theory analysis of soil contact and adherency being carried out to above-mentioned different analog boards, and determines level board, L-type respectively
Normal adhesion force region and tangential adhesion strength region on plate and U-shaped board, by adhesion zones different on different analog boards
Domain is marked, and convenient contact and adhesion process subsequently through observation soil contacts soil and divide with the mechanism adhered to
Analysis；
Step 3: simulation test device being contacted using soil, carries out the contact of soil to level board, L-type plate and U-shaped board respectively
Simulation test during test, records load number t, soil adhesion mass M (t) and the soil adhesion face of different analog boards
Product S (t), and the true sticking coefficient I (t) for obtaining soil is calculated by following formula:
Step 4: according to test result data, drawing the pass between the true sticking coefficient I (t) of test soil and load number t
It is curve graph, the test data figure of comprehensive three analog boards simulates excavator in operation, tests between soil and scraper bowl
Contact and adhesion process；
Step 5: according to test result data, drawing out between the soil adhesion area S (t) of different analog boards and load number t
Graph of relation, simulate excavator in operation, test the variation of soil adhesion area of the soil on different analog boards
Process, the mechanism that moisture film is formed between analog board and test soil, analysis test soil contact between scraper bowl adherency
Detailed process；
Step 6: according to the analysis of test result and soil adhesion mechanism that the step 5 obtains, being formed as to avoid moisture film
Further aim carries out local shape improvement to different analog boards, to obtain new analog board, repeats step 1-4, obtains new
Relation curve of the analog board between the true sticking coefficient I (t) and load number t of the test soil under identical test operating condition
Figure verifies changing for analog board by comparative simulation plate in the test soil before and after remodeling and the true sticking coefficient between scraper bowl
Type, if contact and degree of adhesion of the test soil to scraper bowl are advantageously reduced, if so, carrying out step 7；
Step 7, moisture content, the soil types for changing test soil, repeat above-mentioned test procedure 1-4, obtain different tests soil
True sticking coefficient variation between corresponding soil and scraper bowl, provides soil when carrying out actual job operating condition for excavator and connects
The theoretical reference of touching and adherency.
2. power shovel as described in claim 1-soil contacts simulation experiment method, in the step 2, when soil with
When analog board is in close contact, contact surface can stick together, the pulling-out force of per unit contact area normal direction projected area, as soil pair
The normal adhesion force of analog board；
When relative displacement occurs along contact surface tangential direction between soil and analog board, i.e. soil is moved along simulation plate surface
When, soil is to the adherency resistance of simulation plate surface, as tangent line adhesion strength of the soil to simulation plate surface.
3. as the described in any item power shovels of claim 1-2-soil contacts simulation experiment method, in the step 3,
The soil contact simulation test device includes braced frame, actuator, speed control, tests native case and camera composition,
Wherein,
The vertical arrangement of actuator, one end are fixedly connected with braced frame, the output rod and test analog board of the other end
Connection, driving analog board carry out simulating the work of power shovel in elevating movement, repeatedly penetration test soil case in vertical direction
Make state；
The speed control and actuator are electrically connected, for controlling movement velocity and the direction of actuator stem；
The native case setting of the test at suitable distance, is arranged inside test soil, passes through and change test immediately below the actuator
The moisture content of soil, soil types can simulate the different soils environment of the real work of excavator；
The camera is for recording different analog boards in the soil after centainly load number, when passing through out from the native case of test
Situation is adhered to, after handling the photo of camera shooting, obtains the change procedure and soil of the adhesive area of test soil
The specific data of adhered area S (t).
4. power shovel as claimed in claim 3-soil contacts simulation experiment method, described every centainly load number
It can be 1 time, 2 times or 5 times.
5. power shovel according to any one of claims 1-4-soil contacts simulation experiment method, in the step 6,
It is described that different analog boards are carried out local shape to improve being specifically the boundary wire shaped for improving different analog boards, with failure test soil
The formation of moisture film between earth and analog board contact surface.
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| CN114839118A (en) * | 2022-04-04 | 2022-08-02 | 南京林业大学 | Device and test method for measuring water film distribution change rule in pressurization process |
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