SU1761864A1 - Method of controlling soil thickening - Google Patents
Method of controlling soil thickening Download PDFInfo
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- SU1761864A1 SU1761864A1 SU904821157A SU4821157A SU1761864A1 SU 1761864 A1 SU1761864 A1 SU 1761864A1 SU 904821157 A SU904821157 A SU 904821157A SU 4821157 A SU4821157 A SU 4821157A SU 1761864 A1 SU1761864 A1 SU 1761864A1
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Abstract
Использование при контроле плотности грунтов, уплотн емых виброкатками с электрическим приводом при выполнении крупных земл ных работ Сущность, в процессе уплотнени грунтов виброкатком измер ют на каждом проходе катка энергию, потребл емую им от силовой установки т гача Процесс уплотнени считают законченным , когда разность между последовательными значени ми измеренных величин стабилизируетс . 1 илUse in monitoring the density of soils compacted by electrically driven vibratory rollers during major earthworks. The essence during the compaction process is measured by vibrating roller on each pass of the roller the energy consumed by it from the propulsion unit of the tractor. The compaction process is considered complete when the difference the values of the measured values stabilized. 1 silt
Description
Изобретение относитс к контрольно- измерительной технике и может быть использовано дл контрол степени уплотнени грунтов при использовании виб- рокат,ов при выполнении крупногабаритных земл ных работ.The invention relates to a measuring and control technique and can be used to control the degree of soil compaction when using vibrating rods, when performing large-scale earthworks.
Известен способ контрол плотности грунтов, реализующийс в устрйостве контрол степени уплотнени материала, заключающийс в измерении электрических характеристик, св занных с параметрами вибрации виброкатков 1. Аналогичный способ предложен фирмой Динапак - (Швеци ) 2.A known method for controlling the density of soils, which is realized in the device for controlling the degree of compaction of the material, consists in measuring the electrical characteristics associated with the vibration parameters of vibratory rollers 1. A similar method was proposed by Dynapack - (Sweden) 2.
Недостатками известных способов вл ютс низка точность при уплотнении грунтов с широким диапазоном гранулометрического состава, а также низка производительность из-за отсутстви возможности управлени процессом уплотнени .The disadvantages of the known methods are low accuracy in compaction of soils with a wide range of particle size distribution, as well as low productivity due to the lack of control over the compaction process.
Известен наиболее близкий к предлагаемому техническому решению способом,Known closest to the proposed technical solution method,
прин тый в качестве прототипа, заключающийс в измерении контактного давлени в процессе производства работ и построении графика зависимости изменени плотности грунта от прохода к проходу. Об окончании процесса уплотнени суд т по уменьшению приращений плотности грунта 3adopted as a prototype, which consists in measuring the contact pressure in the course of work and plotting the change in soil density from passage to passage. About the end of the compaction process is judged to reduce the increments of the density of the soil 3
Недостатками данного способа вл етс низка производительность, а также низка точность из-за измерени контактного давлени , что неприемлемо при контроле плотности грунта с широким диапазоном гранулометрического состава.The disadvantages of this method are low productivity as well as low accuracy due to the measurement of contact pressure, which is unacceptable when monitoring the density of the soil with a wide range of particle size distribution.
Целью изобретени вл етс повышение производительности и точности при уплотнении грунтов виброкаткомThe aim of the invention is to improve the performance and accuracy in compaction of soils with a vibratory roller.
Поставленна цель достигаетс тем, что в ивзестном способе включающем измерение на каждом проходе уплотн ющего катка параметра, завис щего от плотности грунта , и определение окончани процесса уплотнени по стабилизации разностиThis goal is achieved in that in an in-ground method, which includes measuring, on each pass of a compacting roller, a parameter depending on the density of the soil, and determining the end of the compacting process to stabilize the difference
.&. . &.
параметров, измеренных на каждом предыдущем и последующем проходах катка, согласно изобретению в качестве параметра, завис щего от плотности грунта, измер ют значение энергии, потребл емой виброкатком от силовой установки т гача.The parameters measured at each previous and subsequent passes of the roller, according to the invention, measure the value of the energy consumed by the vibratory roller from the propulsion power plant as a parameter depending on the density of the soil.
Предлагаемый способ контрол степени уплотнени грунтов по сн етс чертежом , где приведена функциональна схема устройства контрол степени уплотнени грунтов.The proposed method for controlling the degree of soil compaction is illustrated in the drawing, which shows a functional diagram of a device for controlling the degree of soil compaction.
Изобретение осуществл етс следующим образом.The invention is as follows.
В электрическую магистраль, св зывающую силовой генератор трактора, например , типа ДЭТ-250 (на чертеже не показан) с электровибратором виброкатка, например , типа ПВК-70ЭА (на чертеже не показан ), вмонтирована вставка 1, содержаща сопротивлени Ri, R2 и Rs, Сопротивлени RI и R2 образуют делитель 2 напр жени , предназначенный дл снижени напр жени , поступающего от генератора трактора. На сопротивлении Ra создаетс падение напр жени , пропорциональное току, потре- б емому электровибратором катка ПВК-70ЭА. Таким образом, формируютс два сигнала, пропорциональные напр жению , поступающему на электровибратор катка, и потребл емому им току. В св зи с тем, что сопротивление качению катка по мере уплотнени грунта уменьшаетс , уменьшаетс и мгновенна мощность, потребл ема электровибратором катка. Сигналы , пропорциональные напр жению и току, поступают на измерительный преобразователь 3 мощности в напр жение. В основе работы преолбразовател 3 лежит реализаци зависимости:Into the electrical line connecting the power generator of the tractor, for example, the type DET-250 (not shown) with the vibratory roller electrovibrator, for example, type PVK-70EA (not shown), the insert 1 is mounted, containing resistances Ri, R2 and Rs The resistances RI and R2 form a voltage divider 2 designed to reduce the voltage coming from the tractor generator. On the resistance Ra, a voltage drop is created that is proportional to the current consumed by the electric vibrator of the PVK-70EA roller. Thus, two signals are formed, which are proportional to the voltage applied to the electric vibrator of the roller and the current consumed by it. Due to the fact that the rolling resistance of the roller decreases as the soil compresses, the instantaneous power consumed by the electric vibrator of the roller decreases. Signals proportional to voltage and current are fed to power transducer 3 to voltage. The basis of the work of preobrazovatel 3 is the implementation of the dependency:
Р /Uidt, оP / uidt o
где Р - измер ема мощность;where P is the measured power;
i - ток, потребл емый от источника;i is the current consumed from the source;
U - напр жение,U is the voltage
С измерительного преобразовател 3 мощности в напр жение сигнал поступает на преобразователь 4 напр жение-частота , который преобразует входное напр жение в последовательность электрических импульсов, частота f которых увеличиваетс по мере возрастани напр жени . Полученна частота поступает на блок 5 управлени , который управл ет работой блока 6 счетчиков и элементов сравнени , состо щего из первого счетчика 8 импульсов и элемента 9 сравнени , в котором осуществл етс интегрирование мощности в соответствии с зависимостью:From the power transducer 3 to the voltage, a signal is supplied to the voltage-to-frequency converter 4, which converts the input voltage into a series of electrical pulses, the frequency f of which increases as the voltage rises. The resulting frequency is fed to the control unit 5, which controls the operation of the block 6 of counters and comparison elements, consisting of the first pulse counter 8 and the comparison element 9, in which the power is integrated in accordance with the dependency:
t2t2
W /Pdt,W / Pdt,
ti где W - энерги , потребл ема за периодti where W is energy consumed over a period
ti...t2.ti ... t2.
Блок 5 управлени устроен таким образом , что при каждом очередном проходе полосы укатки импульсы, вырабатываемые преобразователем 4 напр жение-частота , записываютс в блоке 6 счетчиков и элементов сравнени таким образом, что в первом счетчике 7 импульсов сохран етс информаци о предыдущем проходе, а во второй счетчик 8 импульсов записываетс The control unit 5 is arranged in such a way that at each successive pass of the rolling strip the pulses produced by the voltage-frequency converter 4 are recorded in block 6 of counters and comparison elements in such a way that information about the previous pass is saved in the first pulse counter 7, and the second pulse counter 8 is recorded
информаци о текущем проходе. В конце каждого прохода по сигналу контроллера управлени направлением движени трактора осуществл етс сравнение информации предыдущего и только что сконченногоinformation about the current passage. At the end of each pass through the signal of the tractor's directional control controller, the information of the previous and the just completed one is compared.
прохода. В случае, когда отличие в информации составл ет заранее заданную величину, определ емую по результатам опытных укаток , элемент 9 сравнени вырабатывает сигнал , поступающий на блок 10passage. In the case when the difference in the information is a predetermined value determined by the results of the experienced rolls, the comparison element 9 generates a signal arriving at the block 10
сигнализации, который извещает машиниста трактора о том, что управл емый грунт достиг максимально возможной плотности. Использование изобретени позвол ет при контроле степени уплотнени грунтовalarm, which notifies the tractor driver that the controlled soil has reached the maximum possible density. The use of the invention allows the control of the degree of compaction of soils
повысить производительность контрол уплотнени грунтов зиброкатком, поскольку контрольно-измерительные работы не требуют дополнительного времени на обработку полученных данных и не св заны сto increase the productivity of soil compaction monitoring by the zinc roller, since the control and measuring works do not require additional time for processing the obtained data and are not associated with
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SU904821157A SU1761864A1 (en) | 1990-03-27 | 1990-03-27 | Method of controlling soil thickening |
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SU904821157A SU1761864A1 (en) | 1990-03-27 | 1990-03-27 | Method of controlling soil thickening |
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US7191062B2 (en) | 2003-12-22 | 2007-03-13 | Caterpillar Inc | Method and system of forecasting compaction performance |
US11079725B2 (en) | 2019-04-10 | 2021-08-03 | Deere & Company | Machine control using real-time model |
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US11234366B2 (en) | 2019-04-10 | 2022-02-01 | Deere & Company | Image selection for machine control |
US11240961B2 (en) | 2018-10-26 | 2022-02-08 | Deere & Company | Controlling a harvesting machine based on a geo-spatial representation indicating where the harvesting machine is likely to reach capacity |
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US11895948B2 (en) | 2020-10-09 | 2024-02-13 | Deere & Company | Predictive map generation and control based on soil properties |
US11927459B2 (en) | 2020-10-09 | 2024-03-12 | Deere & Company | Machine control using a predictive map |
US11946747B2 (en) | 2020-10-09 | 2024-04-02 | Deere & Company | Crop constituent map generation and control system |
US11957072B2 (en) | 2020-02-06 | 2024-04-16 | Deere & Company | Pre-emergence weed detection and mitigation system |
US11983009B2 (en) | 2020-10-09 | 2024-05-14 | Deere & Company | Map generation and control system |
US12013245B2 (en) | 2020-10-09 | 2024-06-18 | Deere & Company | Predictive map generation and control system |
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-
1990
- 1990-03-27 SU SU904821157A patent/SU1761864A1/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР № 138512, кл. Е 02 D 1/00,1986. Л Форссблад Вибрационное уплотнение грунтов и оснований, М. Транспорт, 1987, с 144-157. Авторское свидетельство СССР № 219445,кл. Е 02 D 3/04, 1967 * |
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