CN2585894Y - Power steering crawler dozer - Google Patents
Power steering crawler dozer Download PDFInfo
- Publication number
- CN2585894Y CN2585894Y CN 03200905 CN03200905U CN2585894Y CN 2585894 Y CN2585894 Y CN 2585894Y CN 03200905 CN03200905 CN 03200905 CN 03200905 U CN03200905 U CN 03200905U CN 2585894 Y CN2585894 Y CN 2585894Y
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- Prior art keywords
- gear
- power steering
- planet
- control valve
- motor
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Abstract
The utility model relates to a power steering crawler dozer with hydraulic mechanical transmission. A power steering mechanism is arranged in a central transmission box body; a hydraulic oil motor is arranged on a box cover, and is composed of two planet rows; a spiral bevel gear is connected with a planet wheel carrier of each of the two planet rows; the hydraulic oil motor is normally engaged with a planet gear tooth rings of sun wheel of the left planet row and the right planet row through a gear shaft, a driving gear and a driven gear; the tooth rings of the left planet row and the right planet row are in transmission connection finally with the left and the right through a spline shaft. The utility model has reasonable power distribution and better energy saving effect; a power steering system can make the dozer turn in situ to satisfy the construction requirements of small working sites and special sites. The utility model has the advantages of productivity enhancement, simple, handy, flexible and convenient operation of a pilot valve control system, and has a modular structure, so that the maintenance is convenient, and the service life is long. The utility model accords with the requirement of the environmental protection, and reaches the environmental protection. The utility model is also intelligent, and can replace import similar products.
Description
Technical field
The utility model relates to a kind of electronic-controlled power steering crawler dozer product of hydraulic machine transmission.
Background technology
The bulldozer of domestic production has machine driving and hydraulic machine driven pedrail formula bulldozer.The deficiencies in the prior art part is, all zero load sensor-based system of these bulldozers, and power division can't be adjusted, steering adopts plate clutch, belt braking more, and turning radius is big, the inconvenience maintenance, control system does not have pilot valve control, handles inconvenient, dumb.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, and provides a kind of performance good, has the power steering system modular organization of unifying, the electronic-controlled power steering crawler dozer product of being convenient to keep in repair.
Can realize purpose by the following technical solutions:
The electronic-controlled power steering crawler dozer, electronic-controlled power steering mechanism is contained in the central transmission case body, and hydraulic oil motor is contained on the case lid, and it is made up of two planet rows, and spiral bevel gear links to each other with two planet rows' planetary wheel carrier; Hydraulic oil motor is by gear shaft, driving gear, driven gear, the sun gear planetary gear gear ring with left and right sides planet row, normal engagement, left and right sides planet row's gear ring by splined shaft with about final transmission link to each other.
The relative prior art of present technique has following advantage and effect: power division is reasonable, adopts variable pump and load sensing controlled system, can make power by load variations reasonable distribution, have better energy-saving effect; Power steering system can make the bulldozer pivot turn, satisfies little work-yard and special place construction requirement; Productivity ratio improves, and the pilot operated system manipulation is easy, light and handy, flexible, and modular organization is easy to maintenance, and the life-span is long; Compliance with environmental protection requirements takes into full account the human engineering design, adopts the mechanism of damping, supercharging and replacing fresh air, be fitted with the pressurized cabin of broad view and comfortable seat, and electronic monitoring and control system, thereby lower driver's labour intensity, reach environmental protection; Intelligent, alternative import like product.
Description of drawings
Fig. 1 is the external form figure of electronic-controlled power steering crawler dozer;
Fig. 2 is a kind of structural representation of electronic-controlled power steering crawler dozer;
Fig. 3 is the transmission system schematic diagram of electronic-controlled power steering crawler dozer;
Fig. 4 is the electronic-controlled power steering structure chart of electronic-controlled power steering crawler dozer;
Fig. 5 is the electronic-controlled power steering fundamental diagram of electronic-controlled power steering crawler dozer;
Fig. 6 is the hydraulic system principle figure of electronic-controlled power steering crawler dozer;
Content to the technical program is described in detail in conjunction with the accompanying drawings.
Embodiment 1, electronic-controlled power steering crawler dozer, electronic-controlled power steering mechanism is contained in the central transmission case body 38, and hydraulic oil motor (HSS motor) is contained on the case lid 27.It is made up of two planet rows, and spiral bevel gear 17 links to each other with two planet rows' planetary wheel carrier 39,40; Hydraulic oil motor often meshes by gear shaft 34, gear 33, gear 32,31, driven gear 30,36 and left and right sides planet row's sun gear 28 planetary gears 26 gear rings 29,37; Left and right sides planet row's gear ring by splined shaft 25,35 with about final transmission link to each other.
Power imports into by two-way: the one road imports into by spiral bevel gear from the angular wheel shaft of motor through dynamic power shift gear box; Another route motor drives volume adjustable hydraulic pump, and fuel feeding is given the hydraulic pressure oil motor, imports from the hydraulic oil motor gear shaft.
Also be provided with hydraulic system, by the hydraulic oil container 43 that is contained in the right wing plate rear side, HSS pump (closed core type on the transfer case, the load sensing variable pump), the main control valve group 48 of right wing plate hydraulic oil container front portion, the piston motor of steering box loam cake, PPC oil feed pump on the transfer case, the PPC control valve 47 of PPC control valve 46 that the control in Floor-board frame left side turns in the driver's cabin and right side control cutter shovel, the overflow valve 53 of left wing plate inboard, cooler 45 is the engine cooling apparatus lower header, right wing plate control guiding valve group front end oil filter 44, lift cylinder 50,51 and dump ram 52, cutter shovel prompt drop valve 49 elements such as grade of water tank front are formed; Connected by pipeline between the element, Variable plunger pump be equipped with load sensing (LS) valve, and piston motor is equipped with brake valve, and the main control valve group will control that cutter shovels that lifting/incline motor turns to and integrated integral body such as pressure flow control valve.
The transmission of TYD200 hydraulic machine, electronic-controlled power steering crawler dozer; motor adopts the NT855-C280BCIII h type engine h of Chongqing engine works; power is powerful, torque reserve is big; can adapt to height above sea level 5000m district work; reliable operation, long service life, the flywheel output has spring bumper; but the external applied load influence that smooth transfer power, protection motor are avoided suddenling change.Its leaf grating shape of the single-phase three element torque-converters of single-stage, oil inlet and outlet angle are all more reasonable, transmission efficiency and can hold (thousand torques) and be improved.Torque-converters connects with the engine flywheel output shaft by universal joint.
Torque-converters is contained in transfer case 15 housings, and output shaft connects with gearbox.Transfer case is equipped with hydraulic pressure HSS (closed core type, load sensing variable) pump, chassis oil circuit duplex pump 22 (transmission system pump) 23 (power train lubricating pump), torque-converters pump 24.
The planetary mechanism gearbox relies on the combination of friction plate or separates and realize gearshift; Adopt hydraulic control, interior bevel gear 17 connects for its output shaft (bevel gear shaft) and central transmission case.Steering mechanism 18 is the epicyclic transmission mechanism of HSS motor control, and brake is multi-disc, spring compression, normal convolution hydraulic pressure isolating construction, and its hydraulic oil is supplied with by the transmission system pump.
Final transmission is the second gear reduction unit structure, and one-level is that the straight-tooth engagement is right, and secondary is a planetary gear speed reducing mechanism, and gearratio is bigger, and driving wheel 20 is that the tooth piece is inserted.
Frame assembly is the ship shape structure, is welded by foundry goods and sheet material, and good rigidly, intensity are greatly the supportive bodies of bulldozer transmission system.
Running gear is the hanging welded construction of axis, the box bogie frame.Firm solid, rigidity is big, and guide wheel, thrust wheel, moping pulley are lubricated floating seal structure, butter tensioner guiding mechanism, and long service life, easy to maintenance, crawler belt 21 is a combined sealing.
Adopt HSS steering, CLSS main control valve and PPC control valve.
Hydraulic pressure HSS pump type: HPV95, discharge capacity: 96ml/ changes; Pressure: 42MPa.
HSS motor model: HMF95DT, discharge capacity: 96ml/ changes; Pressure: 38.2MPa.
PPC valve oil feed pump 16 is a gear type, model: CBJ30F14I-001, and discharge capacity: 14ml/ changes; Pressure: 20MPa.
Main control valve is sensor-type for closing cardiac load, can adjust HSS pump (by the control of PPC valve) power output at any time according to need of work.
Apparatus for work pilot valve (PPC valve) is a slide bar type, can control ascending, descending, maintenance, four positions of floating, and turns to pilot valve (PPC valve) control complete machine is left and right to turn to.
Complete machine is equipped with air conditioner, adopts air-supply arrangement constantly to carry fresh air toward driver's cabin.
Driver's cabin is a closed type, air-supply arrangement when work, room pressure is increased, to guarantee indefatigability when the operation of highlands.
Closed core type load sensing steering is made up of load sensing oil pump (HSS pump), pilot valve (PPC valve), control valve and steering hydraulic motor (HSS motor), has pressure compensation, turns to the pressure variation in the loop not influence action and maximum turning velocity; Operation is reliable, and it is preferential all to guarantee to turn to the loop flow under any operating mode, can preferentially to its dispense flow rate, guarantee the fuel feeding abundance according to turning to the loop requirement,
Energy conservation, in the load sensing system, the flow of oil pump output, the controlled valve pressure loss (the import and export pressure differential of control valve) control, and the open area of flow size and control valve guiding valve is complementary.Principles of Regulation are that excessive as flow, then the control valve pressure differential increases, and the flow of oil pump is reduced; Then control valve pressure reduces, and the flow of oil pump is increased; When flow and guiding valve open area were complementary, oil pump flow was invariable, thereby reduced power loss, had improved the efficient of system.
Claims (3)
1, a kind of electronic-controlled power steering crawler dozer is characterized in that: electronic-controlled power steering mechanism is contained in the central transmission case body, and hydraulic oil motor is contained on the case lid, and it is made up of two planet rows, and spiral bevel gear links to each other with two planet rows' planetary wheel carrier; Hydraulic oil motor is by gear shaft, driving gear, driven gear, the sun gear planetary gear gear ring with left and right sides planet row, normal engagement, left and right sides planet row's gear ring by splined shaft with about final transmission link to each other.
2, electronic-controlled power steering crawler dozer according to claim 1, it is characterized in that: the forward after-poppet of motor is fixed on the frame assembly, buffer will connect dish greatly and be fixed on the engine flywheel, by spring power is passed to flower keyboard, by the output shaft outputting power, universal joint one end connects with the buffer output shaft, end connects with the torque-converters power shaft in addition, and transfer case housing is fixed on the frame assembly, and torque-converters is passed to gearbox by output shaft with power; The gearbox front end connects with transfer case housing, end connects with central transmission case in addition, and bevel gear, planetary steering gear and arrestment mechanism are housed in the central transmission case; Central authorities' transmission case is contained on the frame assembly casing, and the left and right sides connects by the driving wheel of output shaft with final transmission, and final transmission is fixed on the frame assembly both sides, the crawler belt of the drive wheel running gear of final transmission; Vehicle frame connects with bogie frame by equalizer bar; Apparatus for work one end connects with oil cylinder, and end connects with bogie frame by crossbeam in addition; Hydraulic system adopts closed core type, the load sensing variable pump, and it turns to usefulness (HSS) steering and (CLSS) control valve and (PPC) control valve.
3, electronic-controlled power steering crawler dozer according to claim 1 and 2, it is characterized in that: also be provided with hydraulic system, by the hydraulic oil container that is contained in the right wing plate rear side, pump on the transfer case, the main control valve group of right wing plate hydraulic oil container front portion, the piston motor of steering box loam cake, oil feed pump on the transfer case, the control valve of control valve that the control in Floor-board frame left side turns in the driver's cabin and right side control cutter shovel, the overflow valve of left wing plate inboard, cooler is the engine cooling apparatus lower header, right wing plate control guiding valve group front end oil filter, lift cylinder and dump ram, elements such as the cutter shovel prompt drop valve of water tank front are formed; Connected by pipeline between the element, Variable plunger pump be equipped with load-sensing valve, and piston motor is equipped with brake valve, and the main control valve group will control that cutter shovels that lifting/incline motor turns to and integrated integral body such as pressure flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03200905 CN2585894Y (en) | 2002-02-04 | 2003-01-14 | Power steering crawler dozer |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02204887 | 2002-02-04 | ||
| CN02204887.1 | 2002-02-04 | ||
| CN 03200905 CN2585894Y (en) | 2002-02-04 | 2003-01-14 | Power steering crawler dozer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2585894Y true CN2585894Y (en) | 2003-11-12 |
Family
ID=34064921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03200905 Expired - Fee Related CN2585894Y (en) | 2002-02-04 | 2003-01-14 | Power steering crawler dozer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2585894Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806349A (en) * | 2010-04-30 | 2010-08-18 | 常州汉森机械有限公司 | Crawler-type traveling power transmission |
| CN102297476A (en) * | 2010-06-22 | 2011-12-28 | 天津建筑机械厂 | Fresh air pressurizing air purifying device special for bulldozer |
| CN106184365A (en) * | 2016-08-30 | 2016-12-07 | 第拖拉机股份有限公司 | Endless-track vehicle steering control mechanism |
| CN107524186A (en) * | 2016-06-22 | 2017-12-29 | 卡特彼勒公司 | Hoist cylinder erecting device for caterpillar tractor |
| CN110453740A (en) * | 2019-08-01 | 2019-11-15 | 高邮市迅达重型工程机械有限公司 | A kind of bulldozer perching knife pocket soil transport device |
| CN111637118A (en) * | 2020-05-09 | 2020-09-08 | 中联重科股份有限公司 | Walking type engineering machinery hydraulic cooling system and hydrostatic bulldozer |
-
2003
- 2003-01-14 CN CN 03200905 patent/CN2585894Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806349A (en) * | 2010-04-30 | 2010-08-18 | 常州汉森机械有限公司 | Crawler-type traveling power transmission |
| CN102297476A (en) * | 2010-06-22 | 2011-12-28 | 天津建筑机械厂 | Fresh air pressurizing air purifying device special for bulldozer |
| CN107524186A (en) * | 2016-06-22 | 2017-12-29 | 卡特彼勒公司 | Hoist cylinder erecting device for caterpillar tractor |
| CN106184365A (en) * | 2016-08-30 | 2016-12-07 | 第拖拉机股份有限公司 | Endless-track vehicle steering control mechanism |
| CN110453740A (en) * | 2019-08-01 | 2019-11-15 | 高邮市迅达重型工程机械有限公司 | A kind of bulldozer perching knife pocket soil transport device |
| CN111637118A (en) * | 2020-05-09 | 2020-09-08 | 中联重科股份有限公司 | Walking type engineering machinery hydraulic cooling system and hydrostatic bulldozer |
| CN111637118B (en) * | 2020-05-09 | 2022-02-01 | 中联重科股份有限公司 | Walking type engineering machinery hydraulic cooling system and hydrostatic bulldozer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN CONSTRUCTION MACHINERY PLANT Free format text: FORMER NAME OR ADDRESS: NO.6443 PLANT, P.L.A. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Tianjin Construction Machinery Factory Patentee before: No.6443 Plant, P.L.A. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031112 Termination date: 20120114 |