Hydrodistributor MTZ 82

Hammoho le ho khanna ka mochini oa mechini? Terekere ea MTZ-82(80) e na le lisebelisoa tse lumellang hore matla a terekere a fetisoe ka lebaka la khatello ea oli. Kabo, hammoho le taolo ea phallo ea oli tlas'a khatello, e etsoa ke yuniti e khethehileng ea sistimi ea hydraulic system - e leng hydraulic distributor.

Mofani oa hydraulic MTZ 82 o fana ka pokello e bonolo le ho ajoa ha khatello ea mokelikeli o sebetsang ho likarolo tsohle tsa matla a hydraulic tsa mochini (li-cylinders, li-hydraulic motors) le lisebelisoa tse sebelisoang hammoho le terekere. Ka thuso ea synchronizer, yuniti e fana ka taolo e ts'oanang ea li-drive tse tharo tsa hydraulic.

Moralo oa morekisi

Thibelo ea ho tsamaisa metsi MTZ 82(80) - R75-33R (GOST 8754-71)

• P - mohoeletsi
• 75 - lilithara tsa yuniti ea ts'ebetso ka motsotso
• mofuta oa 3 reel, eo moralo oa eona o sa lumelleng ho lokisoa sebakeng se "theohileng".
• 3 - palo ea li-spools setšoantšong sa wiring
• P: Yuniti e etselitsoe ho sebetsa le taolo ea matla

Moqapi o entsoe ka tlung e arohaneng ea tšepe e nang le li-spools tse tharo ho ea ho tse otlolohileng le mocha bakeng sa valve ea bypass. Karolo e ka holimo le e ka tlase ea mokotla e koahetsoe ke likoahelo tse tiileng tsa aluminium. Lifofane tsa ho hokahanya ha likoahelo le 'mele li tiisitsoe ka li-gaskets' me li tiisitsoe ka li-screws.

Hydrodistributor MTZ 80(82) R75-33R

Mofani o na le mela e meraro ea ho sebetsa bakeng sa ho fana ka mokelikeli o sebetsang, o leng perpendicular ho fetola boemo ba li-spools; mohala oa ho ntša "B" - o kopanya likoti tsa li-valve le li-spools, li-drain line "C" - li kopanya menyetla ea li-spools, mohala oa taolo oa "G" o feta ka har'a matlo a bahatelli le masoba ka har'a li-spools; Peipi e hokahane le belofo ea bypass 14 Piston ea valve ea bypass e na le jete ea throttle 13 ho theha ho theoha ha khatello mocheng oa ho ntša metsi le likheo tlas'a piston, e tiisang hore e bulehile sebakeng se sa nke lehlakore.

Li-coil li thibela le ho bula lithapo tsa ho sebetsa tse nang le li-throttle slots. Tsamaiso e etsoa ka ho sebelisa li-levers, tse ka tlas'a sekoahelo se ka tlaase sa distributor. Li-levers li kopantsoe le li-spools ka sekhahla sa spherical 9 se kenyang polasetiki 10 le lesale la ho tiisa 8. Ho tloha ka ntle, hinge e koetsoe ka bushing ea rabara 6. Li-spools tse tharo li u lumella hore ka nako e le 'ngoe u laole ts'ebetso ea li-hydraulic actuators tse tharo.

Kamoo e ea sebetsang

Moropa o mong le o mong, ho latela maemo a behiloeng, o sebetsa ka mekhoa e mene:

• "Neutral": Sebaka se mahareng pakeng tsa boemo bo holimo "holimo" le boemo bo tlase "tlase". Belofo ea bypass e bulehile 'me e ntša metsi a sebetsang ho drain. Li-spools li thibela likanale tsohle, li lokisa boemo bo behiloeng pele ba li-hydraulic actuators.
• "Phaha": boemo ba pele bo phahameng ka ho fetisisa ka mor'a "ho se nke lehlakore". Belofo ea bypass e koala sekoti sa drain. Spool e fetisetsa oli ho tloha mocha oa ho lahla ho ea moleng oa ho phahamisa li-cylinder.
• "Ho theoha ho qobelloa" - boemo bo tlaase ka ho fetisisa pele "ho phaphamala" ho fela. Belofo ea bypass e koala sekoti sa drain. Spool e fetisetsa oli ho tloha mocha oa ho lahla ho ea mocheng oa ho khutla oa hydraulic cylinder.
• "Floating" - boemo bo tlaase ka ho fetisisa ba lever. Belofo ea bypass e bulehile 'me e ntša mokelikeli o sebetsang ho tloha pompong ho ea ho drain Boemong bona, mokelikeli o sebetsang o phalla ka bolokolohi ka mahlakoreng ka bobeli ho tloha mekoting ka bobeli ea hydraulic cylinder. Hydraulic cylinder e boemong bo sa lefelloeng 'me e arabela ketsong ea maemo a ka ntle le ho matla a khoheli a mochine. Kahoo, e lumella lihlopha tse sebetsang tsa mochine ho latela sebaka nakong ea ho lema le ho boloka botebo bo tsitsitseng ba ho lema.

Ts'ebetso ea ho boloka Spool

Li-spools li na le valve ea 3 ea selemo bakeng sa ho khutlela ka mokhoa o itekanetseng sebakeng se se nang lehlakore le li-detent tsa bolo tse li tšoereng sebakeng se khethiloeng. Sesepa sa "checkball valve" se sebelisoa ha khatello ea tsamaiso e feta 12,5-13,5 MPa. Khatello e feteletseng e etsahala ha hydraulic cylinder e fihla boemong ba ho qetela sebakeng se tsamaisanang le ho qobelloa ho phahamisa le ho theola boemo, hammoho le ha tsamaiso e tletse.

Mofani oa li-hydraulic o na le sesebelisoa sa liphallelo tsa tšohanyetso 20. Sephahla sa tšireletso se lokisoa ho fokotsa khatello ho feta 14,5 ho 16 MPa. Phetoho e entsoe ka screw 18, e fetolang tekanyo ea compression ea selemo sa valve ea bolo 17. Sesebelisoa se hlahisoa ha mochine o hlōleha - spool ea mochine le sesebelisoa sa bypass se hlōleha.

Litšitiso tse tloaelehileng tsa mofani oa MTZ

Sehokelo ha se phahamise

Sena se ka bakoa ke lithōle tse kenang tsamaisong ea hydraulic ka tlas'a valve ea bypass. Tabeng ena, valve ea bypass ha e koalehe - mokelikeli o sebetsang o kena ka har'a sekoti sa drain. Morekisi ha a arabele ha a fetola boemo ba li-reels. E tlositsoe: tlosa liboutu tse peli holim'a sekoaelo sa valve ea bypass, tlosa seliba ka valve 'me u tlose litšila.

Boemong ba ho ba sieo kapa ho fokotseha ha boima ba li-hydraulic tsa terekere, ho tsamaisana le ho futhumala ha oli ka har'a sistimi, ponahalo ea molumo oa molumo sebakeng sa "lift" lever e bonts'a ho theoha ha boemo ba oli le ho lutla ha moea ho. tsamaiso.

Sekhomaretsi ha se notlele sebakeng se phahamisitsoeng

Lebaka ke ho sithabela ha li-hoses tsa hydraulic hoses le li-hydraulic couplings, ho roala ha tiiso ea compression ea piston kapa molamu oa hydraulic cylinder ea matla, ho roala ha li-spools tse ntseng li phahama, ponahalo ea likhetla holim'a valve ea bypass e thibelang valve. ho tloha ho koala ka thata.

Ha e theohe, e phahamisa lisebelisoa tse sa khomaretsoeng

Lebaka ke hore ho thijoa ha melapo e sebetsang ea distributor ho thibela ho feta ha oli. Phetoho ea phallo ea oli ha e khonehe. Felisa: qhaqha le ho hlatsoa, ​​​​'me u hloekise mela, hammoho le ho hlahloba ts'ebetso ea li-valve.

Sehlomathiso se oela fatše haholo

Sena se bontša ho theoha ho hoholo ha khatello tsamaisong; ha ho e-ba le khefu meleng ea oli le ho theoha ha boemo ba mokelikeli o sebetsang, moea o matla oa moea oa tsamaiso. Felisa: fetola liphaephe tse senyehileng, hlahloba ho tiea ha likhokahano tsa sistimi, eketsa oli ho boemo bo hlokahalang.

Automatic neutralization ha e sebetse ha hydraulic cylinder e phahamisitsoe ka botlalo kapa e theohile

Lebaka ke ho se sebetse hantle ha "ball valve" "spool position lock inself closing". Hlakola; qhaqha, nka sebaka sa likarolo tsa valve tse tsofetseng le litiiso.

tlhathoba

Mofani o hlahlojoa ka mor'a ho hlahloba ho sebetsa ha sheh hydraulic pump ea tsamaiso ka lebelo la enjene e lekantsoeng, ho beha palo ea mokelikeli o sebetsang o fanoeng ka lilithara ka motsotso oa ts'ebetso. Sesebelisoa sa KI 5473 se hokahane le liphetho tse sebetsang tsa yuniti ho e-na le hydraulic cylinder. Fetolela lever e ntseng e phahama ho ea sebakeng sa "lift". Haeba boleng bo theoha ho feta lilithara tse 5 ka motsotso, morekisi o tloha ho ea lokisoa.

Sesebelisoa sa tlhahlobo ea hydrodistributor.

Khokahano ea hydrodistributor

Ho MTZ 82 (80), boloko bo teng leboteng le ka pele ka har'a cabin tlasa dashboard. Li-levers tsa taolo li kopantsoe le li-spools ka axis, 'me melamu e hlalosoa ka lehlakoreng le letona la phanele. Moralo oa morekisi o lumella, ha o tsamaisa yuniti ho ea sebakeng se seng kapa o e kenya mefuteng e meng ea terekere, ho fetola sebaka sa li-levers ka ho khutlisetsa sekoaelo ka li-outlet bakeng sa li-levers ka lehlakoreng le leng la matlo a distributor. Bakeng sa ho hokahanya ha bonolo ho li-hydraulics le lisebelisoa tsa hydraulic, likarolo tsa ho qetela tsa yuniti li na le li-outlet tse ka pele le tse ka thōko bakeng sa ho phahamisa le ho theola. Ho phaella moo, ho hokahanya ka nako e le 'ngoe ho li-spool tse peli ho lumella ho laola ka nako e le' ngoe li-cylinders tse peli tsa hydraulic.

Likoti tse nang le khoele, tse tšoailoeng ka lengolo "P", li kopanya liphaephe tse reretsoeng ho phahamisa sekontiri sa hydraulic cylinder, likoti tse ling li kopanya liphaephe tse kopanyang sebaka se tlaase.

Bakeng sa khokahano ea hermetic ea liphaephe, lisebelisoa li tiisitsoe ka li-washer tsa koporo le mehele ea rabara - litšoelesa tsa cable. Joalo ka maemo, spool e le 'ngoe ea distributor e hoketsoe ho silindara ea haeteroliki ea matla ea khokahanyo e ka morao ea terekere, 'me li-spools tse peli li sebelisoa ho khanna lisebelisoa tsa haeteroliki tse hole.

Ha ho na le likarolo tse tharo tsa distributor bakeng sa hydraulic drive le lisebelisoa tsa ho laola lisebelisoa, ho kenyeletsoa mochine o eketsehileng holim'a terekere. Ho na le mekhoa e 'meli ea khokahano: khokahano ea serial le khokahano e tšoanang.

Boemong ba pele, phepelo ea morekisi oa hydraulic ea bobeli e etsoa ho tsoa ho e 'ngoe ea likarolo tsa morekisi ea ka sehloohong ea kopanyang sebaka sa lifti le mocha oa ho tsoa oa morekisi oa bobeli. Phallo ea ho khutla ea mokelikeli o sebetsang, o sebelisoang ke spool ea kopano e kholo bakeng sa phepelo e eketsehileng ea distributor, e koetsoe ka plug. Sebaka sa drainage sa distributor oa bobeli se boetse se hokahane le tanka ea hydraulic ea sistimi. Valve e sebelisoa ka ho beha spool e kopantsoeng sebakeng sa "phahamisa". Ka hona, ho fumanoa melapo e mehlano ea mosebetsi e laoloang bakeng sa ho bulela lisebelisoa tsa hydraulic. Bothata ke ho lahleheloa ke sebaka sa ho sebetsa le ho itšetleha ha ts'ebetso ea mofani oa bobeli ho boemo ba theknoloji ea node ea pele.

Khokahano e tšoanang e etsoa ka ho kenya tee ea litsela tse tharo tsa hydraulic moleng oa khatello e phahameng ho tloha pompong. Valve e arola phallo e felletseng ea mokelikeli o sebetsang ka phallo e 'meli ho hokahanya likarolo tse peli mme e u lumella ho fetola phallo ea oli. Ha o tloha ho mofani e mong ho ea ho o mong, tšebeliso ea oli e fetoloa ho latela pompo. Liphaephe tsa ho ntša metsi tse tsoang ho baabi li hokahantsoe le tee. Mocha oa bobeli oa ho laola valve ea bypass ea distributor e eketsehileng e koetsoe ka plug. Ka hona, tsamaiso e fumana mekhoa e tšeletseng ea ho sebetsa, tse tharo tsa tsona li sebetsa le molaoli oa matla.

Ho itšetlehile ka sebaka sa thepa ea hydraulic, manifold e eketsehileng e behoa leboteng le ka morao la cab kapa leboteng le ka pele le letona ho e-na le fensetere e ka tlaase ea ho shebella. Kopano e fetisetsoa ka ntle ho cab, li-levers li isoa ka hare.

Hape hoa lokela ho hlokomeloa hore mofuta ona oa li-distributor le liphetoho tsa oona li ka sebelisoa e le karolo ea literekere tsa hydraulic tsa YuMZ-6, DT-75, T-40, T-150 le liphetoho tsa tsona.

Liphetohong tsa morao-rao tsa MTZ 82 (80), li-analogues tsa mofuta o boletsoeng oa kopano ea monoblock P80-3 / 4-222 e nang le taolo ea matla le P80-3 / 1-222 ntle le taolo e kentsoe.

Multi-section distributor with joysticks.

Mefuta e meng le meralo ea barekisi li khethoa ha li na le li-hydraulic system tse eketsehileng tsa terekere, ho nahanoa ka mofuta oa mosebetsi o entsoeng, sepheo le palo ea li-drive tsa hydraulic. Kahoo, ha u sebelisa lisebelisoa tsa hydraulic tse nang le palo e kholo ea li-hydraulic units, li-distributors tse ngata li sebelisoa. Moralo oa taolo ea li-reel o sebelisa li-levers tsa thabo tse u lumellang ho laola li-reel tse peli ka nako e le 'ngoe, ho eketsa tlhahiso ea bakhanni le ergonomics ea mosebetsing.

R-80 hydraulic distributor bakeng sa terekere ea MTZ-80 - sesebelisoa, morero le ho se sebetse ho ka khonehang

MTZ 80 ke terekere ea bokahohle e nang le mabili, e hlahisitsoeng Setsing sa Terene sa Minsk ho tloha ka 1974. Nako e telele ea tlhahiso ea mochini ona e tiisitsoe ke moralo o atlehileng le monyetla oa ho khutlisetsa lisebelisoa tse ngata ka literekere tse khethehileng tse nang le mesebetsi e mengata. Tšebeliso e kopanetsoeng ea lisebelisoa tse sa tšoaneng e bakoa ke tsamaiso ea hydraulic ea boleng bo phahameng, e ka tšeptjoang le e sebetsang hantle ea setsi sa temo. E 'ngoe ea lintlha tse ka sehloohong tsa tsamaiso ena ke R-80 hydraulic distributor bakeng sa terekere ea MTZ 80.

Ntle le moo, likarolo tsa MTZ 80 li kenyelletsa:

• boteng ba ho khanna ka morao;
• ho beoa ka pele ha yuniti ea matla;
• palo e kholo ea likere tse eang pele le tse khutlisetsang morao (18/4);
• boiketlo ba ho lokisa le ho hlokomela.

Moralo o atlehileng oa terekere, litšobotsi tsa eona tsa tekheniki le ho feto-fetoha ha maemo ho netefatsa tšebeliso e pharalletseng ea MTZ 80 eseng temong feela, empa hape le indastering, kaho, matlong le lits'ebeletso tsa sechaba le meru.

Morero le tlhophiso e akaretsang ea MTZ hydraulic system

Sistimi ea hydraulic ea terekere e etselitsoe ho laola le ho fana ka matla ho lisebelisoa tse ling tse kentsoeng tse fapaneng, tse ka hlomelloang ka MTZ 80. E entsoe ka mofuta o arohaneng mme e kenyelletsa lintlha tse latelang:

• pompo ea lisebelisoa;
• molaoli oa matla;
• hydraulic booster;
• li-cylinders tse nang le taolo e arohaneng;
• hydrodistributor MTZ;
• mokhoa o hlalositsoeng oa ho hokela lisebelisoa;
• ho tlosoa ha motlakase;
• liphaephe tsa khatello e phahameng;
• lisebelisoa tsa ho hokahanya;
• tanka ea oli.

Ho sa tsotellehe palo e kholo ea likarolo le likopano tse sebelisoang tsamaisong ea hydraulic, moralo, ka lilemo tse mashome a 'maloa a ts'ebetso, o ile oa etsa hore ho khonehe ho khetholla mefokolo e hlahang ts'ebetsong, ka lebaka la ntlafatso e entsoeng, e felise.

Hajoale, ts'ebetso ea sistimi ea hydraulic e khetholloa ka ts'epo e phahameng le ts'ebetso e phahameng, e lumellang ts'ebeliso ea lisebelisoa tsa sejoale-joale tse hlonngoeng le tse tsamaisoang bakeng sa terekere ea MTZ 80. Tlatsetso ea bohlokoa ho sena e entsoe ke P80 hydraulic distributor, eo. , ka tlhokomelo e nepahetseng le phetoho e nepahetseng, hoo e batlang e sa hloke ho lokisoa.

Tlhokahalo ea hydraulic distributor holim'a terekere

Distributor R-80 3/1 222G ea mofuta oa likarolo tse tharo e sebelisoa tsamaisong e akaretsang ea hydraulic ea terekere ea Belarus 80 mme e etsa mesebetsi e latelang:

• e sireletsa tsamaiso ho tloha ho hydraulic overloads nakong ea ho phahamisa kapa ho theola ka thata;
• e aba ho phalla ha mokelikeli o sebetsang o pompetsoeng ke pompo ea hydraulic pakeng tsa li-node tsa tsamaiso (li-cylinders, li-hydraulic motors, joalo-joalo);
• e phunya sistimi e sa sebetse ka tlhahiso e sa jeleng paate ha oli ea gear e kena ka tanka ea oli;
• e kopanya molumo o sebetsang oa hydraulic cylinder le drain ea mokelikeli oa ts'ebetso (ha o sebetsa sebakeng se sa nke lehlakore).

Ho feta moo, P80 3/1 222G hydraulic distributor e sebetsa e le sesebelisoa sa motheo seo ho sona ho etsoang liphetoho tse sa tšoaneng bakeng sa ho sebelisoa ho kenya likarolo, li-excavators le thepa ea kaho ea litsela.

Litšobotsi tsa tekheniki le liparamente tsa morekisi li ka fumanoa tlhalosong ea mofuta oa P80, moo:

• R - mohoeletsi.
• 80 - phallo ea mokelikeli oa phetisetso (l / min).
• 3 - mofuta oa khatello ea ts'ebetso (boholo bo lumelletsoeng ke 20 MPa, ka lebitso la 16 MPa).
• 1 - mofuta oa sepheo sa ts'ebetso (ts'ebeliso e ikemetseng lits'ebetsong tse akaretsang tsa hydraulic).
• 222 - meropa e meraro e khethehileng, e entsoeng ho latela phetolelo ea bobeli.
• G - liloko tsa hydraulic (hlahloba li-valve).

Mokhoa le ts'ebetso ea hydraulic distributor MTZ 80

Sesebelisoa sa hydraulic distributor se na le likarolo tse latelang:

• linyeoe tsa P80 3/1 222G tse nang le lisebelisoa tsa li-valve le likanale tsa ho fana ka mokelikeli o tsoang ho pompo ea gear le likanale tsa ho ntša oli ho li-cylinders;
• meqomo e meraro e nang le lisebelisoa tsa ho notlela le ho khutlisa ka boiketsetso;
• sekoaelo se ka holimo se nang le litataiso tsa spool tse hahiloeng;
• belofo e khethehileng ea tšireletso.

Molao-motheo oa ts'ebetso ea hydraulic distributor o itšetlehile ka 'nete ea hore ha mochine oa hydraulic distributor R80 3 / 1 222G e hokahane le tsamaiso ea hydraulic ka hare ho' mele, li-spools tsohle le valve li theha litsela tse 'maloa tse kopantsoeng bakeng sa ho feta ha metsi a metsi. Ho na le tse tharo ka kakaretso.

1. Flushing - e koala li-spools tsohle le valve ea bypass.
2. Hlakola - ka khetho ena, ke li-spools feela tse kopantsoeng 'me mocha ona o tiisa ho lokolloa ha mokelikeli o setseng.
3. Taolo: E boetse e feta har'a li-spools tsohle le valve ea bypass, empa e hokahane le liphaephe tsa ts'ebetso ho tloha pompong.

Taolo ea li-spools, ka ho latellana, le ho tsamaisoa ha oli ea phetisetso ho phalla ka litsela tse lumellanang ho fana ka maemo a mane a fapaneng ha ho sebetsa le lihlopha le lisebelisoa tse eketsehileng. Mekhoa ena ea ts'ebetso e kenyelletsa:

• ho se nke lehlakore,
• nyollelo,
• leratadima,
• boemo ba ho phaphamala (ho theola 'mele e sebetsang tlas'a ketso ea boima ba eona).

Sesebelisoa se joalo se lumella, haeba ho hlokahala, ho etsa litokiso ka thoko bakeng sa mokhoa o mong le o mong oa ts'ebetso le morero oa khokahano oa P80.

Litšitiso tse ka bang teng tsa hydrodistributor

Litšitiso tse atileng haholo tsa R80 3/1 222G hydraulic distributor tse kentsoeng terekereng ea MTZ 80 li kenyelletsa:

• ho roala ha sebopeho ka har'a spool ea 'mele ea binomial hydraulic valve;
• tlōlo ea molao ka piston ea hydraulic cylinder;
• ho senyeha ha lisebelisoa tsa pompo;
• litempe tsa rabara tse petsohang;
• ho tsoa ha metsi a hydraulic ka lisebelisoa tse kopanyang;
• tšenyo ea melapo ea oli.

Moralo le tlhophiso ea hydraulic distributor e lumella mochine oa mochine hore a lokise mathata ana ka matsoho a hae. Ho phaella moo, thepa e khethehileng ea ho lokisa e khothalletsoang ke moetsi bakeng sa P80 3/1 222G e tla thusa ho thusa ho lokisa.

Moqapi o ka tšeptjoang le o tiisitsoeng oa P80 hydraulic distributor o lumella hore o sebelisoe ka katleho phetolelong e ncha ea terekere ea Belarus 920, hammoho le MTZ 3022 multifunctional.

Hydrodistributor Р80-3/1-222

Morekisi o etsa kopo ea

1. Literekere: YuMZ-6, YuMZ-650, YuMZ-652, YuMZ-8080, YuMZ-8280, YuMZ-8070, YuMZ-8270, T-150, KhTZ-153, KhTZ-180, KhTZ-181, MTZ-80, KhTZ-17021, KhTZ-17221, KhTZ-17321, K-710, T-250, T-4, LT-157, MTZ-XA, TB-1, LD-30, LT-157, DM-15, Hydrodistributor MTZ -80, mofani oa thepa MTZ-82, MTZ-800, MTZ-820, MTZ-900, MTZ-920, DT-75, VT-100, LTZ-55, LT-72, T-40, T-50, T- 60, LTZ-155, T-70, K-703
2. Baepolli ba lintho tsa khale: EO-2621
3. Li-charger: PEA-1,0, PG-0,2, K-701
4. Lisebelisoa tsa meru: TDT-55, LHT-55, LHT-100, TLT-100

P80 ea ho tšoaea baphatlalatsi

Mohlala oa ho tšoaea (litšobotsi tsa tekheniki) tsa R80-3 / 4-222G hydraulic valve:

• R ke morekisi;
• 80 - tlhahiso e phatlalalitsoeng, l / min;
• 3 - khatello (ka lebitso - 16 MPa, moeli - 20 MPa);
• 4 - khoutu ea sebaka;
• 222 - palo ea ho chenchana le mofuta oa bona, tabeng ena - mekhahlelo e meraro ea mofuta oa 2;
• G - ka litiiso tsa metsi (haeba li sa fumanehe - ntle le tsona). Lisebelisoa tse nang le tiiso ea metsi le ntle le eona li fetoha ka ho feletseng.

Molao-motheo oa ts'ebetso ea li-valve tsohle tsa hydraulic P 80 o tšoana, theko lethathamong la theko e itšetlehile ka mofuta oa sehlahisoa (pele u reka, bona letšoao).