CN108583273A - A kind of gear speed change electricity drive bridge of integrated form two of having electronic parking - Google Patents

A kind of gear speed change electricity drive bridge of integrated form two of having electronic parking Download PDF

Info

Publication number
CN108583273A
CN108583273A CN201810255809.7A CN201810255809A CN108583273A CN 108583273 A CN108583273 A CN 108583273A CN 201810255809 A CN201810255809 A CN 201810255809A CN 108583273 A CN108583273 A CN 108583273A
Authority
CN
China
Prior art keywords
gear
oil
wet
clutch
wet clutch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810255809.7A
Other languages
Chinese (zh)
Other versions
CN108583273B (en
Inventor
钟鸣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou Zhi Drive Technology Co Ltd
Original Assignee
Zhengzhou Zhi Drive Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhengzhou Zhi Drive Technology Co Ltd filed Critical Zhengzhou Zhi Drive Technology Co Ltd
Priority to CN201810255809.7A priority Critical patent/CN108583273B/en
Publication of CN108583273A publication Critical patent/CN108583273A/en
Application granted granted Critical
Publication of CN108583273B publication Critical patent/CN108583273B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/02Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/04Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/10Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
    • B60K17/105Units comprising at least a part of the gearing and a torque-transmitting axle, e.g. transaxles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/04Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Structure Of Transmissions (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses a kind of integrated form two of having electronic parking gear speed change electricity to drive bridge, including transmission system and hydraulic system;The present invention integrates original driving motor, clutch, two-gear transmission, transmission shaft, drive axle, the main reducing gear of clutch, transmission shaft and drive axle can no longer be needed, clutch is replaced with yielding coupling, self shifter is carried out using multi-plate wet clutch cooperation self shifter program, and active lubrication system, and each manual parking brake in left and right in wheel and parking brake is made into the electronic central wet type parking brake on speed changer, alleviate weight, production and maintenance cost are reduced, transmission efficiency is improved.

Description

A kind of gear speed change electricity drive bridge of integrated form two of having electronic parking
Technical field
The present invention relates to a kind of integrated form two of having electronic parking gear speed change electricity to drive bridge.
Background technology
The vehicles such as the electronic passenger train of two gears, electric sanitation truck and electronic logistic car currently on the market, mostly use motor and connect The two-gear transmission that clutch is driven connects Cardan shaft, then connects the form of drive axle, using two wheel side parking systems Dynamic, as shown in Figure 1, driving motor 1 is by clutch 2 and through 3 speed change of two-gear transmission, driving Cardan shaft 4 is rotated, is moved Power passes to wheel 6 through drive axle 5.
Invention content
It in order to mitigate weight to improve course continuation mileage, and further reduces the cost, the present invention provides a kind of electronic automobile-used Integrated form two with automatic parking keeps off speed changing bridge, can automatically switch in one or two gears.
The technical solution adopted by the present invention is:A kind of gear speed change electricity drive bridge of integrated form two of having electronic parking, including transmission System and hydraulic system;
The transmission system includes central wet type parking brake, bottom gear driving gear, input shaft, top gear driving tooth Wheel, yielding coupling, driving motor, top gear driven gear, wet clutch B, wet clutch A, jackshaft, bottom gear quilt Moving gear, countershaft-gear, left half axle, output shaft gear, differential assembly and right axle shaft;
Torque and rotating speed are transmitted to transmission input shaft, bottom gear driving gear by the driving motor by yielding coupling In top gear driving gear, torque and rotating speed are passed to bottom gear driven gear by bottom gear driving gear, and top gear is actively Torque and rotating speed are passed to top gear driven gear by gear;
The bottom gear driven gear and top gear driven gear is arranged on jackshaft, during the jackshaft is equipped with Entreat wet type parking brake, wet clutch A and wet clutch B respectively with bottom gear driven gear and top gear driven gear Engagement drives differential assembly that left half axle and right axle shaft is driven to rotate by countershaft-gear;
The transmission mechanism further includes Oil pump electrical machinery, and the Oil pump electrical machinery is each oil by the gear oil pump in hydraulic system Cylinder provides power;
The hydraulic system includes central wet type parking brake oil cylinder, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A, gear Oil pump, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve B, wet clutch B oil cylinders, wet clutch A oil cylinders, two-bit triplet electromagnetism Valve, pressure reducing valve and check valve;
The gear oil pump is by system pressure oil not through two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A, two-bit triplet guide Formula electricity proportional pressure-reducing valve B and two-bit triplet solenoid valve it is defeated be sent to respectively wet clutch A oil cylinders, wet clutch B oil cylinders and in It entreats in wet type parking brake oil cylinder, remaining system pressure oil is returned to by pressure reducing valve and check valve in fuel tank and each oil site.
Further, magnetic filter is equipped between the fuel tank and gear oil pump in the hydraulic system;Band pollution instruction It is connected on gear oil pump rear portion with filter, the temperature sensor of bypass;Guide is equipped on the branch road of temperature sensor rear end Formula overflow valve.
The beneficial effect comprise that:The present invention is by original driving motor, clutch, two-gear transmission, transmission Axis, drive axle are integrated, and can no longer need the main reducing gear of clutch, transmission shaft and drive axle, clutch is replaced For torsional vibration damper, self shifter and active lubrication system are carried out using multi-plate wet clutch cooperation self shifter program, And each manual parking brake in left and right in wheel and parking brake is made into the electronic central wet type on speed changer Parking brake alleviates weight, reduces production and maintenance cost, improves transmission efficiency.
Description of the drawings
Fig. 1 is existing two gears car power schematic diagram;
Fig. 2 is the transmission system schematic diagram of the present invention;
Fig. 3 is the hydraulic system principle figure of the present invention.
In figure:1- driving motors, 2- clutches, 3- two-gear transmissions, 4- Cardan shafts, 5- power through drive axle, 6- wheels;
The centers 101- wet type parking brake, 102- bottom gears driving gear, 103- input shafts, 104- top gear driving gears, 105- yielding couplings, 107- Oil pump electrical machineries, 108- driving motors, 109- top gears driven gear, 110- wet clutches B, 111- wet clutch A, 112- jackshaft, 113- bottom gears driven gear, 114- countershaft-gears, 115- left half axles, 116- Output shaft gear, 117- differential assemblies, 118- right axle shafts;
The centers 201- wet type parking brake oil cylinder, 202- magnetic filters, 203- with pollution only and bypass filter, 204- temperature sensors, 205- pilot operated compound relief valves, 206- two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A, 207- gear oil pump, 208- two-bit triplet pilot-operated type electricity proportional pressure-reducing valve B, 209- fuel tank, 210- wet clutch B oil cylinders, 211- wet clutches A The cooler of oil cylinder, 212- two-bit triplets solenoid valve, 213- pressure reducing valves, 214- with bypass, 215- check valves.
Specific implementation mode
The present invention will be further described below with reference to the drawings.
The present invention is that a kind of integrated form two of having electronic parking keeps off speed change electricity and drives bridge, including transmission system and hydraulic system, As shown in Fig. 2, wherein transmission system include central wet type parking brake 101, bottom gear driving gear 102, input shaft 103, Top gear driving gear 104, yielding coupling 105, driving motor 108, top gear driven gear 109, wet clutch B110, Wet clutch A111, jackshaft 112, bottom gear driven gear 113, countershaft-gear 114, left half axle 115, output shaft gear 116, differential assembly 117 and right axle shaft 118.
The driving motor 108 by yielding coupling 105 by torque and rotating speed be transmitted to transmission input shaft 103, On bottom gear driving gear 102 and top gear driving gear 104, bottom gear driving gear 102 passes to torque and rotating speed low Torque and rotating speed are passed to top gear driven gear 109 by speed gear driven gear 113, top gear driving gear 104;Described is low Speed gear driven gear 113 and top gear driven gear 109 are arranged on jackshaft 112, and it is wet that center is additionally provided on jackshaft 112 Formula parking brake 101.Wet clutch A111 and wet clutch B110 respectively with bottom gear driven gear 113 and top gear Driven gear 109 engages, and by countershaft-gear 114 by torque and rotating speed output shaft gear 116, drives differential assembly 117 Left half axle 115 and right axle shaft 118 is driven to rotate.
When being driven by first gear transmission ratio, wet clutch A111 engagements, then bottom gear driven gear 13 will torsion Square and rotating speed pass to countershaft-gear 114 by jackshaft 112, and then countershaft-gear 114 passes through torque and rotating speed is defeated Go out shaft gear 116, differential assembly 117 passes to left half axle 115 and right axle shaft 118.
When being driven by second gear transmission ratio, wet clutch B110 is combined, then top gear driven gear 109 will be turned round Square and rotating speed pass to countershaft-gear 114 by jackshaft 112, and then countershaft-gear 114 passes through torque and rotating speed is defeated Go out shaft gear 116, differential assembly 117 passes to left half axle 115 and right axle shaft 118.
When in neutral gear, wet clutch A111 and wet clutch B110 are not combined.
When in parking shift, by controlling solenoid valve by the oil cylinder piston cavity pressure of central wet type parking brake 101 Release, pressing friction piece under the action of itself spring realize braking;And wet clutch A111 and wet clutch B110 Do not combine.
The reversion of driving motor 108 is returned back through to realize, it is consistent with the control mode advanced to retreat each gear.
As shown in figure 3, the system that hydraulic system is integrated with active lubrication in order to control;For providing control and lubricating system pressure The gear oil pump 207 that the constant speed Oil pump electrical machinery 107 that power oil sources is rotated by one direction drives provides, and makes the control pressure of hydraulic system It keeps constant.
Hydraulic system includes central wet type parking brake oil cylinder 201, magnetic filter 202, band pollution instruction and bypass Filter 203, temperature sensor 204, pilot operated compound relief valve 205, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A206, gear Oil pump 207, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve B208, fuel tank 209, wet clutch B oil cylinders 210, wet clutch A Oil cylinder 211, two-bit triplet solenoid valve 212, pressure reducing valve 213, the cooler 214 with bypass and check valve 215.Gear oil pump 207 By the system pressure oil extraction in fuel tank 209, after the filtering of magnetic filter 202, into the filtering with pollution instruction and bypass Device 203 and temperature sensor 204, and it is equipped with pilot operated compound relief valve 205 in branch end, pilot operated compound relief valve 205 is for setting up The control pressure of hydraulic system.Gear oil pump 207 is by system pressure oil not through two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A206, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve B208 and two-bit triplet solenoid valve 212 are transported to wet clutch A oil cylinders 211, in wet clutch B oil cylinders 210 and central wet type parking brake oil cylinder 201, remaining system pressure oil passes through pressure reducing valve 213, cooler 214 and check valve 215 with bypass return in fuel tank 209 and each oil site, and wherein pressure reducing valve 213 is for setting up The pressure of lubricant passage way, check valve 215 play overpressure protection to lubricant passage way;.
The hydraulic control system course of work in the present invention is:
When being driven by first gear transmission ratio, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A206 control wet clutches A The pressure of oil cylinder 211, stroke realize the combination of wet clutch A.
When being driven by second gear transmission ratio, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve B208 controls wet type clutch The pressure of device B oil cylinders 210, stroke realize the combination of wet clutch B.
When first gear is switched to neutral gear or second gear, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A206 control wet type from The plunger shaft of clutch A oil cylinders 211 is connected to fuel tank 209, makes the oil in the plunger shaft of wet clutch A oil cylinders 211 at its own Oil return box 209 under the left and right of spring.
When second gear is switched to neutral gear or first gear, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve B208 control wet type from The plunger shaft of clutch B oil cylinders 210 is connected to fuel tank 209, makes the oil in the plunger shaft of wet clutch B oil cylinders 210 at its own Oil return box 209 under the left and right of spring.
When being not in parking shift, 212 control pressure oil of two-bit triplet solenoid valve enters central wet type parking brake oil Cylinder 201 overcomes its spring pressure that parking brake is made to be in malcompression on-position;When in parking shift, two-bit triplet electricity Magnet valve 212 controls central 201 plunger shaft of wet type parking brake oil cylinder and is connected to fuel tank 209, makes central wet type parking brake The oily oil return box 209 under the left and right of its own spring in the plunger shaft of oil cylinder 201, parking brake is by central wet type parking system The spring compression of dynamic device oil cylinder 201, is in on-position.

Claims (2)

1. a kind of integrated form two of having electronic parking keeps off speed change electricity and drives bridge, it is characterised in that:Including transmission system and hydraulic system;
The transmission system includes low central wet type parking brake, speed gear driving gear, input shaft, top gear driving tooth Wheel, yielding coupling, driving motor, top gear driven gear, wet clutch B, wet clutch A, jackshaft, bottom gear quilt Moving gear, countershaft-gear, left half axle, output shaft gear, differential assembly and right axle shaft;
Torque and rotating speed are transmitted to transmission input shaft, bottom gear driving gear by the driving motor by yielding coupling In top gear driving gear, torque and rotating speed are passed to bottom gear driven gear by bottom gear driving gear, and top gear is actively Torque and rotating speed are passed to top gear driven gear by gear;
The bottom gear driven gear and top gear driven gear is arranged on jackshaft, during the jackshaft is equipped with Entreat wet type parking brake, wet clutch A and wet clutch B respectively with bottom gear driven gear and top gear driven gear Engagement drives differential assembly that left half axle and right axle shaft is driven to rotate by countershaft-gear;
The transmission mechanism further includes Oil pump electrical machinery, and the Oil pump electrical machinery is each oil by the gear oil pump in hydraulic system Cylinder provides power;
The hydraulic system includes central wet type parking brake oil cylinder, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A, gear Oil pump, two-bit triplet pilot-operated type electricity proportional pressure-reducing valve B, wet clutch B oil cylinders, wet clutch A oil cylinders, two-bit triplet electromagnetism Valve, pressure reducing valve and check valve;
The gear oil pump is by system pressure oil not through two-bit triplet pilot-operated type electricity proportional pressure-reducing valve A, two-bit triplet guide It is wet that formula electricity proportional pressure-reducing valve B and two-bit triplet solenoid valve are transported to wet clutch A oil cylinders, wet clutch B oil cylinders and center In formula parking brake oil cylinder, remaining system pressure oil is returned to by pressure reducing valve and check valve in fuel tank and each oil site.
2. a kind of integrated form two of having electronic parking according to claim 1 keeps off speed change electricity and drives bridge, it is characterised in that:It is described Hydraulic system in fuel tank and gear oil pump between be equipped with magnetic filter;Filter, temperature with pollution instruction and bypass Sensor series are at gear oil pump rear portion;Pilot operated compound relief valve is equipped on the branch road of temperature sensor rear end.
CN201810255809.7A 2018-03-27 2018-03-27 Integrated two-gear variable-speed electric drive bridge with electronic parking function Active CN108583273B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810255809.7A CN108583273B (en) 2018-03-27 2018-03-27 Integrated two-gear variable-speed electric drive bridge with electronic parking function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810255809.7A CN108583273B (en) 2018-03-27 2018-03-27 Integrated two-gear variable-speed electric drive bridge with electronic parking function

Publications (2)

Publication Number Publication Date
CN108583273A true CN108583273A (en) 2018-09-28
CN108583273B CN108583273B (en) 2021-08-17

Family

ID=63623735

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810255809.7A Active CN108583273B (en) 2018-03-27 2018-03-27 Integrated two-gear variable-speed electric drive bridge with electronic parking function

Country Status (1)

Country Link
CN (1) CN108583273B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110017359A (en) * 2019-04-23 2019-07-16 合肥工业大学 Multi gear electric automobile gear device based on face gear

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040223011A1 (en) * 2003-05-06 2004-11-11 Adkins Christopher A. Method of authenticating a consumable
CN202242966U (en) * 2010-09-26 2012-05-30 比亚迪股份有限公司 Driving system of electric vehicle
CN105235508A (en) * 2015-11-09 2016-01-13 青岛科瑞特激光设备有限公司 Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester
CN105762976A (en) * 2016-04-18 2016-07-13 北京航空航天大学 Blade electric vehicle integrated two-shift automatic electric drive assembly
CN205605780U (en) * 2016-03-15 2016-09-28 绍兴前进齿轮箱有限公司 Power dividing infinitely variable gear box
CN106763619A (en) * 2017-01-22 2017-05-31 北京航空航天大学 Two shift transmission used for electric vehicle
CN106812937A (en) * 2015-12-01 2017-06-09 史树元 A kind of planetary gear power dividing type stepless speed variator hydraulic control system
CN206826407U (en) * 2017-06-27 2018-01-02 南京越博动力***股份有限公司 Two grades of transaxles of electric car
CN107627830A (en) * 2017-09-21 2018-01-26 吉泰车辆技术(苏州)有限公司 Integral shaft puts power assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040223011A1 (en) * 2003-05-06 2004-11-11 Adkins Christopher A. Method of authenticating a consumable
CN202242966U (en) * 2010-09-26 2012-05-30 比亚迪股份有限公司 Driving system of electric vehicle
CN105235508A (en) * 2015-11-09 2016-01-13 青岛科瑞特激光设备有限公司 Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester
CN106812937A (en) * 2015-12-01 2017-06-09 史树元 A kind of planetary gear power dividing type stepless speed variator hydraulic control system
CN205605780U (en) * 2016-03-15 2016-09-28 绍兴前进齿轮箱有限公司 Power dividing infinitely variable gear box
CN105762976A (en) * 2016-04-18 2016-07-13 北京航空航天大学 Blade electric vehicle integrated two-shift automatic electric drive assembly
CN106763619A (en) * 2017-01-22 2017-05-31 北京航空航天大学 Two shift transmission used for electric vehicle
CN206826407U (en) * 2017-06-27 2018-01-02 南京越博动力***股份有限公司 Two grades of transaxles of electric car
CN107627830A (en) * 2017-09-21 2018-01-26 吉泰车辆技术(苏州)有限公司 Integral shaft puts power assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110017359A (en) * 2019-04-23 2019-07-16 合肥工业大学 Multi gear electric automobile gear device based on face gear

Also Published As

Publication number Publication date
CN108583273B (en) 2021-08-17

Similar Documents

Publication Publication Date Title
CN204367890U (en) For two grades of hydraulic control speed changing driver elements of electronlmobil
EP2715177B1 (en) Clutch assembly and drive train for a motor vehicle
CN101260933B (en) Hydraulic mechanical type automatic gear shifting system
US3675508A (en) Powershift transmission
DE102006061516B4 (en) Hydraulic arrangement for controlling two actuators
CN104776173B (en) Electro-tricycle or the automatic gear-box of electric four-wheel vehicle
CN205605780U (en) Power dividing infinitely variable gear box
CN108583273A (en) A kind of gear speed change electricity drive bridge of integrated form two of having electronic parking
CN105235508A (en) Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester
CN201068959Y (en) Power shifting transmission-gear box
CN105065620A (en) Hydraulic transmission system driven by four wheels
CN102913614A (en) Hydraulic control system of automatic gearshift automobile transmission
CN204762244U (en) Crops combine second gear transmission assembly
WO1991001461A1 (en) Arrangement and process for operating a continuously variable driving unit of a motor vehicle
CN202468894U (en) Dual power output gearbox and vehicle traction power system
CN102537261A (en) Double-power output gearbox and vehicle traction power system
CN2674201Y (en) Mechanical-power, shift-gears speed-changing box
CN203585252U (en) Multi-gear pavement mechanical gearbox capable of flexible gearshift
CN202441831U (en) Power shifting gearbox of engineering mechanical vehicle
CN105605204B (en) A kind of power dividing infinitive variable gear box
CN202926976U (en) Hydraulic transmission box for engineering machinery
CN203063676U (en) Gearbox sandwich-type power taking device of sweeper
CN104776083B (en) Machine driving operation vehicle for contact wire low speed walking system
JP4097166B2 (en) Transmission device for work vehicle
CN102145653A (en) Hydraulic control valve of transmission clutch for automatic transmission

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant