一.SD8高驅動履帶推土機突破了傳統的履帶推土機設計方法,將驅動鏈輪脫離了行走架,布置到與終傳動、轉向製動離合器,中央傳動同一軸線上,履帶呈三角形布置,消除了地麵直接傳遞給驅動鏈輪的衝擊載荷,使傳動係統的壽命提高了30%。
二.行走係統采用彈性懸掛裝置,便於引導輪越過障礙,連續的副懸掛裝置,通過其浮動作用,可以緊貼地麵行駛。緩衝裝置吸收地麵衝擊載核,減小了傳至底盤約50%的衝擊載荷,改善了車輛行走的平穩性和司機的舒適性、增加了履帶與地麵的接觸麵積(增大約15%),提高了整機的牽引性。行走架與機架的絞接由樞軸式取代了傳統的八字梁結構,提高了行車架與機架的連接剛度。整機重心布置可方便地調節,以滿足不同機具對整機重心的使用要求。
四.液力機械變矩器采用外分流機械、液力兩部分輸出, (液力輸出占70%,機械輸出占30%),兼備了液力傳動能自動適應載荷的變化和機械傳動通過性能好的特點,拓寬了發動機與變矩器匹配的高效範圍,提高了傳動效率。
五.動力換檔變速箱采用行星式結構,緊湊合理,體積小,傳動效率高,變速箱離合器采用多片濕式,油壓結合,彈簧分離,摩擦片采用強製冷卻潤滑,最大限度地提高了離合器壽命。
六.轉向與製動離合器均為免調式,濕式多片離合器,製動離合器為碟簧壓緊,液壓分離的常結合離合器,轉向離合器為常分離,液壓結合離合器;轉向與製動離合器聯動手操縱,可實現緩轉彎、急轉彎、整車製動、腳踏板實現整車總製動;設有鎖車機構,起動發動機時可使整機保持製動狀態,保證坡道起動發動機不溜車,使整機作業更加安全可靠。
八.工作裝置液壓係統采用壓力補償回路,減小了液壓功耗,提高了作業平穩性,降低了司機作業的技術要求。工作裝置油缸靠近機身近乎垂直地麵布置,提高了鏟刀的鏟掘力,鏟刀采用S型,容量大,其推土作業效率大大優於普通型推土機。
九.鬆土裝置采用全液壓、可調式、單鉤裂土器,使用四根油缸,其中兩根油缸為轉角油缸,調整此油缸可改變鬆土鉤角度,以便更好地插入、掘起和碎裂岩石,另外兩根油缸為鬆土油缸,調整此油缸可改變裂土深度,上下可調的鬆土鉤提高了生產率和延長鬆土鉤的使用壽命,流線型設計的鬆土器及柴油箱後背使司機在處於水平時能看到鬆土器的鏟尖,便於司機的操作。同時大大地提高了鬆土器的強度及可靠性,使其具有獨特的裂土功能。
十一.由聲光電三級報警的電子監控係統取代了傳統的儀表監視係統,在推土機工作時分別對柴油機的水溫、油壓;底盤液壓係統和工作裝置液壓係統的工作油溫,油壓;柴油箱中的油量等參數進行記錄監控。推土機一旦發生故障,電子監控儀即發出報警,避免了由於小故障的發生未能及時處理而造成推土機的嚴重損壞。
SD8高驅動履帶推土機係行走係統彈性懸掛、驅動鏈輪高置、液力機械傳動、液壓操縱式履帶推上機,配裝S型鏟刀、單鉤鬆土器。整機關鍵結構采用高強度板材,能夠滿足在多石、惡劣地麵環境中作業。裝有防傾翻的司機駕駛室以及舒適的司機座椅。
SD8 is elevated sprocket, track-type bulldozer. Its undercarriage system is elastic suspended, elevated sprocket, hydraulic direct drive, and hydraulic controls. SD8 dozer can be equipped with S-blade, single shank ripper. Main structure uses high strength plate and is suitable for working in stony, worse earth condition. The cab is installed Rops device and comfortable seat.
整機性能參數
使用質量(不包括鬆土器): 40000㎏
鬆土器重量: 4300 ㎏
發動機飛輪功率/轉速: 246kw(335HP)/1900r/min
履帶接地長度: 3280mm
接地比壓(不帶鬆土器): 105 kPa
履帶中心距: 2200mm
外型尺寸(長×寬×高)
(帶單鉤鬆土器): 8090×4172 ×3952 mm
坡行角度: 縱向30°,橫向25°
最小離地間隙: 485mm
理論行駛速度: km/h
前進一檔0~3.9 倒退一檔0~4.8
前進二檔0~6.8 倒退二檔0~8.4
前進三檔0~11.9 倒退二檔0~14.8
推土作業率(運距40m) 452m3/h
Main specifitions
Operating weight(not including ripper) 40000㎏
Ripper weight 4300㎏
Engine flywheel power/RPM 246 kw(335HP)/1900r/min
Track ground contact length 3280 mm
Ground pressure(without ripper) 105 kPa
Track contact length 2200 mm
Overall dimensions(L×W×H)
8090×4172×3952(with single shank ripper)
Gradeability latitude30 ° transverse 25°
Ground clearance 485mm
Theory travel speed (km/h)
1st gear forward 0-3.9 1st gear backward 0-4.8
2nd gear forward 0-6.8 2nd gear backward 0-8.4
3rd gear forward 0-11.9 3rd gear backward 0-14.8
Dozing operating rate (moving distance 40m) 452m3/h
發動機性能參數
Diesel engine specifications
柴油機型號: NTA855-C400(BCⅢ)
柴油機型式: 水冷、單行、四衝程、渦輪增壓、六缸、140mm缸徑
額定轉速: 1900r/min
飛輪功率: 246kw(335HP)
發動機扭矩儲備係數: 24.5%
起動方式 24V電起動
Model NTA855-C400 (BCⅢ)
Type water cooled, single line, four strokes, turbocharged, 6-cylinders, diameter 140mm
Rated speed 1900r/min
Flywheel power 246kw(335HP)
Torque storage coefficient 24.5%
Start mode 24v electric starting
變矩器部件
Torque converter
SD8高驅動履帶推土機采用輸出端外分流液力機械傳動單級變矩器。
Power separating, hydraulic-mechanic drive, single stage torque converter is used in SD8 elevale sprocket bulldozer.
變速總成
Transmission assembly
獨到的結構將中央傳動、變速箱和變速控製閥構造成為一個整體部件。可將總成或其中任一部件拆裝,極其便於維修。變速箱為多級行星傳動,完全實現了積木式拆裝,並通過性能優良的多功能控製閥可在前進或倒退一、二、三各檔位之間任意快速地變換。
It integrates center drive, transmission and speed changing control valve into one component. It can be assembled or disassembled as assembly or as a part. It is very convenient to service. Transmission is multi-stage planetary drive to realize modular assembling and disassembling. Gear the shift can be changed among 1st gear, 2nd gear, 3rd gear forward or reverse rapidly, through multi-functional control valve.
轉向與製動離器部件
Steering and braking clutch
轉向離合器與製動離合器均為免調式、濕式多片離合器。製動離合器為碟簧壓緊、液壓分離的常結合離合器;轉向離合器為全液壓壓緊的非常結合離合器。轉向與製動離合器聯動手操作,可實現緩轉彎、急轉彎、整機製動,腳踏板實現整機總製動,設計有製動撥杆,起動發動機時行走係保持製動狀態,保證坡道起動發動機不溜車。
Steering and braking clutch are adjustment-free, oil-type, multi-disc clutch. The braking clutch is pressed by spring, separated hydraulicly, constant meshed type. Steering clutch is hydraulic pressed, non-constant engaged clutch. Steering and braking acts simultaneously, operated manually to realize steering slowly, sharply and braking. The braking of entire machine can be realized through the pedal. Braking rod is designed to keep the undercarriage system in braking condition and guarantee the machine not to slip on slope when starting the engine.
終傳動
Final drive
終傳動為兩級行星傳動減速機構,裝在轉向與製動離合器外側,組合式鏈齒,拆裝維修十分方便。
Final drive is two-stage planetary reduction gear mechanism. It is mounted at outside of steering and braking clutch. Combined sprocket segment is very convenient for assembling, disassembling and service.
左右行走係統
undercarriage system
SD8高驅動履帶推土機的行走係統采用了彈性安裝的新型行走係統,履帶呈三角型布置,驅動鏈輪高置。連續的副懸掛裝置,通過其浮動作用,可以緊貼地麵障礙物行走,改善了車輛行走的平穩性和駕駛員的舒適性,增加了履帶與地麵的接觸麵積,提高了整機的行走和牽引性能。
SD8 dozer utilizes elastic-mounted undercarriage. The track is triangle shape. The sprocket is elevated. Through floating function of continuous auxiliary suspension device, the machine can travel near obstacle on the ground to improve travelling stability and comfortable of the driver. Ground contact area is increased. Performance of travelling and traction is raised.
防傾翻保護的隔離安裝的駕駛室
R.o.p.s cab
駕駛室為六邊形薄壁箱形結構,六麵均裝有玻璃,視野開闊,後麵是推拉玻璃。根據用戶需求可配裝空調。翻車防護架剛性強,推土機在非常狀態時能有效地保護司機的安全。全部可調的新型司機座椅向右偏15°,加上傾斜的燃油箱、發動機罩和履帶,使司機具有極好的前後方視野。
The cab is hexagonal thin wall box-type structure. Glass is mounted at six sides with wide viewing range. Pulling and pushing glass is mounted at back side. Air conditioner can be installed according to the requirement of customer. The structure of Rops is rigid. It can protect the driver efficiently when the bulldozer is in special condition. Adjustable operator’s seat bias to right 15° and fuel tank, engine hood, track are tilting, the driver can has a good front and rear sighting range.
工作裝置液壓係統
Implement hydraulic system
工作裝置液壓係統控製鏟刀的升降、側傾以及鬆土裝置的動作,主要由泵、油缸、閥組、油箱管路及操縱部份組成。工作裝置泵采用雙聯葉片泵,其主要性能參數為:
前泵: 排量 129 ml/r 額定壓力 21 MPa
額定轉速:2000 r/min
後泵: 排量 56 ml/r 額定壓力 21 MPa
額定轉速:2000 r/min
鏟刀提升係統額定工作壓力為: 17.5 MPa
側傾係統額定工作壓力為: 18.3 MPa
Implement hydraulic system can control lifting, lowering and tilting of the blade. It also can control the moving of ripper. It mainly consists of oil pump, cylinder, valve group, oil tank line and controlling parts. Implement pump is two group vane type pump. The main specification is as following:
Front pump Displacement 129ml/r
Rated pressure 21MPa
Rated speed 2000r/min
Rear pump Displacement 56ml/r
Rated pressure 21MPa
Rated speed 2000r/min
Rated operation pressure of blade lifting system 17.5MPa
Rated operation pressure of tilting system 18.3MPa
底盤液壓係統
Hydraulic system of tractor
底盤液壓係統由油泵、變速控製閥、轉向與製動控製閥、順序閥、變矩器出口溢流閥、濾油器以及管路等組成。主泵采用三聯齒輪泵,其主要性能參數為:
潤滑泵: 公稱排量90ml/r 額定壓力0.4 MPa
額定轉速2000 r/min
工作泵: 公稱排量115ml/r 額定壓力3.1 MPa
額定轉速2000 r/min
排油泵: 公稱排量160ml/r 額定壓力0 .5 MPa
額定轉速2000 r/min
It is composed of oil pump, transmission control valve, steering and braking control valve, sequence valve, torque converter outlet relief valve, filler and oil line, etc. Main pump is three group gear pump. The main performance is as following:
Lubricating pump Rated displacement 90 ml/r
Rated pressure 0.4 MPa
Rated speed 2000 r/min
Working pump Rated displacement 115 ml/r
Rated pressure 3.1 MPa
Rated speed 2000 r/min
Oil draining pump Rated displacement 160 m/r
Rated pressure 0.5 MPa
Rated speed 2000 r/min
維修保養加注容量
Maintenance filling capacity
柴油箱: 753升
水箱及柴油機冷卻水 125升
發動機曲軸箱 47升
後橋箱底盤液壓係統用油 167升
最終傳動用油(單側) 23升
行走緩衝彈簧箱(每側): 30升
樞軸潤滑用油 13升
裝置係統油箱: 89升
Fuel tank 753L
Water tank and diesel engine cooling water 125L
Camshaft case of diesel engine 47L
Bevel gear case hydraulic system of tractor 167L
Final drive (one side) 23L
Rear seat buffer spring case (each side) 30L
Pivot lubricating 13L
Implement system oil tank 89L
工作裝置部分
Blade
鏟刀型式 高 度 寬 度 容 量
S型鏟刀 1765mm 4172 mm 13.0 m3
Type Height Width Capacity
s-blade 1765mm 4172 mm 13.0 m3
鬆土裝置
Ripper
形式: 單鉤可調全液壓鬆土器
鬆土角度: 45°
最大鬆上深度 1150mm
最大提升高度 830mm
Type single, adjustable hydraulic ripper
Rippering angle 45°
Max. penetration 1150mm
Max. lifting height 830mm
鏟刀
型式
|
履帶接地長度A
|
整機長度B
|
鏟刀
高度C
|
整機
高度D
|
鏟刀
寬度E
|
履帶接地中心距F
|
挖掘
深度
|
提升
高度
|
鏟刀
容量
|
直傾鏟(S型鏟刀)(帶鬆土器)
|
3280
|
8090
|
1765
|
3952
|
4172
|
2200
|
614
|
1288
|
13.0
|
直傾鏟(S型鏟刀)(帶牽引機構)
|
3280
|
6755
|
1765
|
3952
|
4172
|
2200
|
614
|
1288
|
13.0
|
Blade type
|
Ground contact length(A)
|
Overall Lenght(B)
|
Blade height(C)
|
Overall height(D)
|
Blade width(E)
|
Track center distance(F)
|
Penetrating length
|
Lifting height
|
Blade capacity
|
Straight tilting blade(s-blade)
(with ripper)
|
3280
|
8090
|
1765
|
3952
|
4172
|
2200
|
614
|
1288
|
13.0
|
Straight tilting blade(S-blade)
(with traction machanism)
|
3280
|
6755
|
1765
|
3952
|
4172
|
2200
|
614
|
1288
|
13.0
|