CN203511304U - Multi-shaft hydraulic drive system for hub motor - Google Patents
Multi-shaft hydraulic drive system for hub motor Download PDFInfo
- Publication number
- CN203511304U CN203511304U CN201320733954.4U CN201320733954U CN203511304U CN 203511304 U CN203511304 U CN 203511304U CN 201320733954 U CN201320733954 U CN 201320733954U CN 203511304 U CN203511304 U CN 203511304U
- Authority
- CN
- China
- Prior art keywords
- hub
- hydraulic motor
- control valve
- hydraulic
- wheel
- 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.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 19
- 238000010586 diagram Methods 0.000 description 10
- 239000003921 oil Substances 0.000 description 9
- 230000001141 propulsive effect Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- 230000009194 climbing Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000144983 clutch Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 208000037805 labour Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
The utility model provides a multi-shaft hydraulic drive system for a hub motor. The multi-shaft hydraulic drive system is characterized by comprising an engine, a power takeoff, a variable pump, four hub hydraulic motors, a hydraulic control valve set and a controller, wherein the four hub hydraulic motors are respectively mounted on four front wheels, and the controller is used for integrally controlling the system; the hydraulic control valve is connected with the variable pump; one end of the power takeoff is connected with a driving accessory output shaft of the engine, and the other end of the power takeoff is mechanically connected with the variable pump fixed on a vehicle frame. According to the hydraulic drive system, two hub motors of a primary hub-motor hydraulic drive system are improved to be four hub motors, and the hydraulic drive system is applied to a heavy vehicle in an 8*4 driving manner, so that the traction performance of the heavy vehicle is greatly improved.
Description
Technical field
The utility model relates to a kind of hydrostatic propons assistant drive system using on extreme difference road surface, is the multiaxis wheel hub fluid motor-driven system that hydraulic hub motor is housed in four front-wheel hubs of heavy-duty vehicle specifically.
Background technology
Can load a large amount of manpower labours' of weight saving commercial vehicle/comm..vehicle, heavy duty truck and engineering truck and in national modernization construction, play the part of important role, people have also proposed more and more higher requirement to them simultaneously.This class vehicle often can run into the smooth road such as the non-firm ground such as road surface, mine, die Dorfstrasse, building ground and mud, ice and snow in the process of moving, and the adhesion value on this class ground is generally less, also has once in a while great slope.
Skidding may appear in traditional single shaft driving automobile in these cases drive wheel, and the crossing ability of automobile is poor.A deficiency that has overcome traditional single shaft-driven vehicle of entirely driving, can effectively utilize adhesive weight, obtains maximum propulsive effort, can obviously strengthen it and pass through performance on severe road surface.But, the operating environment more complicated of car for common engineering, although sometimes have wet-skid road surface or abrupt slope, most of still in smooth good hard surfacing.If entirely driven, on speed and fuel economy, just seem outstanding not in good road surface situation.And, an easy parasitic horsepower that produces of entirely driving, the load that this not only increases Parts for Power Train, makes tire because of the accelerated wear test of too much sliding, and has also reduced driving efficiency and drawbar efficiency simultaneously.
Another kind of solution is on non-driving wheel, to increase a set of electronic assistant drive system.The 4 wheel driven system of similar timesharing, when automobile travels in good road surface, adopts traditional back-wheel drive, and electronic assistant drive system is not used; When running into above-mentioned bad road surface, enable electronic assistant drive system, automobile front and back wheel drives automobile jointly, until close electronic assistant drive system after rolling bad road surface away from.Adopt electric drive system to cancel the parts such as diff, transmission shaft, be not only conducive to realize the lightweight of automobile, also make structurally flexible arrangement of automobile, easily realize energy regeneration braking function.But adopting electric drive wheel to drive needs the parts such as motor, battery, these parts not only price are high, and service life is not long.Meanwhile, electric drive wheel is integrated parts such as motor, drg, the mass penalty that causes non-spring to carry is larger, worsens the Vertical performance of vehicle.
Both need to be under severe road environment for those, the heavy-duty commercial vehicle that need to work on good hard surfacing again, Chinese invention patent application CN102358163A proposes the comprehensive hub hydraulic motor driving system that solves this class Vehicle Driving Cycle problem.It provides a kind of technical scheme that is arranged on the hub hydraulic motor driving system of front-wheel (non-driving wheel), only in the situation that increasing very little cost, can improve significantly automobile and pass through performance on bad road surface.
But this patent just becomes former traditional vehicle into 4X4 by 4X2 driving to be driven.And in Practical Project, the heavy-duty commercial vehicle that some 8X4 drive can run into such bad road surface equally, increase separately two hub motors and car load is become to 8X6 by 8X4 drive, although can improve the tractive property of car load, the ratio of its raising or limited.Particularly, when moveing backward on bad road surface of automobile gone up a slope, this problem is more obvious, because now axle load can shift forward, two motors can not be exported very large tractive force.
Therefore, need a kind of heavy-duty vehicle multiple-working mode of can realizing to improve its performance driving economy, can strengthen again the tractive force of heavy-duty vehicle to adapt to the appearance of the fluid power system on extreme difference road surface.
Utility model content
The purpose of this utility model is that former hub hydraulic motor driving system is improved to 4 hub motors by 2 hub motors, and it is applied in the heavy goods vehicles of 8X4 drive form, to overcome the poor shortcoming of heavy-duty commercial vehicle crossing ability on bad road surface of 8X4 drive form, improve it and pass through performance.
The technical solution adopted in the utility model is as follows:
A kind of multiaxis hub hydraulic motor driving system, comprise: driving engine, power takeoff, controllable capacity pump, be arranged on four wheel hub HM Hydraulic Motor, the fluid control valve group on four front-wheels and the controller that entire system is controlled respectively, wherein, described fluid control valve group is connected with described controllable capacity pump; One end of described power takeoff is connected with the driving annex output shaft of described driving engine, the other end of described power takeoff be fixed on the controllable capacity pump mechanical connection on vehicle frame.
The high pressure oil outlet of described controllable capacity pump is connected by pressure duct with described fluid control valve group high pressure oil inlet, and the low pressure oil inlet of described controllable capacity pump is connected by low pressure line with described fluid control valve group low pressure oil outlet.
The high pressure oil outlet of described fluid control valve group is connected with oil outlet with the oil inlet of described four wheel hub HM Hydraulic Motor by pressure duct with low pressure oil inlet.
Described four wheel hub HM Hydraulic Motor are the radial piston hydraulic motor that structure is identical.
The utility model is by controlling the diverse location of hydraulic valve, realize HM Hydraulic Motor forward, quit work and reverse function, and can regulate according to loading demand the discharge capacity of pump, motor, thereby realize the multiple-working mode of car load.And former hub hydraulic motor driving system is improved to 4 hub motors by 2 hub motors, and it is applied in the heavy goods vehicles of 8X4 drive form, the tractive property of loaded vehicle is improved greatly.In addition, this multiaxis hub hydraulic motor driving system total quality is little, and transferring elements is few, can on the basis of saving to greatest extent manufacture and improvement cost, realize the object of capable of saving fuel oil and assurance car load tractive performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of multiaxis hub hydraulic motor driving system of the present utility model;
Fig. 2 is multiaxis hub hydraulic motor driving system of the present utility model energy transfer route schematic diagram when the independent drive pattern of driving engine;
Fig. 3 is multiaxis hub hydraulic motor driving system of the present utility model energy transfer route schematic diagram when associating drive pattern;
Fig. 4 is that the structure of the fluid control valve group that adopts in hub hydraulic motor driving system described in the utility model forms schematic diagram.Described fluid control valve group 10 is comprised of the change-over valve of two by pass valves and a 3-position 4-way.
Fig. 5 is for adopting the overall control FB(flow block) of multiaxis hub hydraulic motor driving system of the present utility model.
Fig. 6 is the diagram of curves that adopts the vehicle tractive force raising of follow-on hub hydraulic motor driving system of the present utility model;
Fig. 7 is the diagram of curves that adopts the vehicle climbable gradient power raising of follow-on hub hydraulic motor driving system of the present utility model.
(description of reference numerals)
1 driving engine, 2 power-transfer clutchs, 3 power takeoffs, 4 change speed gear boxs, 5 controllers, 6 transmission shafts, 7,9 rear driving axles, 8,10 trailing wheels, 11 controllable capacity pumps, 12 low pressure lines, 13 fluid control valve groups, 14 by pass valves, 15 three-position four-way valves, 16 pressure ducts, 17 front-wheels, 18 wheel hub HM Hydraulic Motor
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.
Fig. 1 is the structural representation of multiaxis hub hydraulic motor driving system of the present utility model.Solid line in Fig. 1 represents mechanical connection, and dotted line represents hydraulic connecting, and long and two-short dash line represents control signal.As shown in Figure 1, follow-on hub hydraulic motor driving system of the present embodiment, comprises driving engine 1, power-transfer clutch 2, power takeoff 3, change speed gear box 4, controller 5, transmission shaft 6, rear driving axle 7,9, trailing wheel 8,10, controllable capacity pump 11, low pressure line 12, fluid control valve group 13, by pass valve 14, three-position four-way valve 15, pressure duct 16, front-wheel 17, wheel hub HM Hydraulic Motor 18.Wherein, controllable capacity pump 11 and fluid control valve group 13 are all fixed on vehicle frame, and wheel hub HM Hydraulic Motor 18 is symmetrical two covers, is arranged on respectively on four front-wheel hubs.
Wherein, power takeoff 3 is connected to driving annex (cooling fan etc.) the output shaft place of driving engine 1, by transmission of power, to controllable capacity pump 11, and controllable capacity pump 11 drives four wheel hub HM Hydraulic Motor 18 that are arranged on front-wheel by hydraulic efficiency pressure system, thereby four wheel hub HM Hydraulic Motor 18 drive two wheels.
Fig. 4 is that the structure of the fluid control valve group that adopts in hub hydraulic motor driving system described in the utility model forms schematic diagram.Described fluid control valve group 10 is comprised of the change-over valve of two by pass valves and a 3-position 4-way.
The mode of operation of system of the present utility model can be the independent drive pattern of driving engine and associating drive pattern.Two kinds of mode of operations are as shown in the table:
● represent that power-transfer clutch engages, motor operations
Zero represents disengaging of clutch, motor idle running
Particularly, two kinds of mode of operations are described below:
(1) the independent drive pattern of driving engine: refer to that automobile travels on normal road surface, now drive wheel is non-slip, the required torque of automotive operation is provided separately by driving engine 1, power-transfer clutch 2 engages, the state of wheel hub HM Hydraulic Motor 18 in idle running, power reaches wheel by driving engine 1 through change speed gear box 4, main reduction gear and diff.
Fig. 2 is multiaxis hub hydraulic motor driving system of the present utility model energy transfer route schematic diagram when the independent drive pattern of driving engine.Solid line in Fig. 1 represents mechanical connection, and dotted line represents hydraulic connecting.As shown in Figure 2, when driving engine 1 independent drive pattern, power-transfer clutch 2 engages, the power output of driving engine is through the output shaft of change speed gear box 4, from transmission shaft 6, be delivered to two rear driving axles 7,9 again to trailing wheel 8,10 driving automobiles, now wheel hub HM Hydraulic Motor 18 is in idling conditions, and hydraulic efficiency pressure system also obtains energy.Power transmission line is as shown in the arrow in Fig. 2.
(2) associating drive pattern: when running car during on bad road surface drive wheel skid, power-transfer clutch 2 combinations, controllable capacity pump 11 obtains a part of power of driving engine 1 by power takeoff 3, provide high pressure oil, wheel hub HM Hydraulic Motor 18 task driven front-wheels 17 for feeding wheel hub HM Hydraulic Motor 18; Other a part of power of driving engine 1 drives trailing wheel 8,10 by change speed gear box 4, thereby become front and back wheel, jointly drives vehicle.When drive wheel skids, according to the power of different slip rates and driving engine now 1, determine that driving engine 1 can offer the driving power of front-wheel 17, controllable capacity pump 11, according to the available driving power of front-wheel 17, comes the discharge capacity of control variable pump 11 to offer the propulsive effort that wheel hub HM Hydraulic Motor 18 is suitable.
Fig. 3 is multiaxis hub hydraulic motor driving system of the present utility model energy transfer route schematic diagram when associating drive pattern.Solid line in Fig. 1 represents mechanical connection, and dotted line represents hydraulic connecting, and long and two-short dash line represents control signal.As shown in Figure 3, when associating drive pattern, power-transfer clutch 2 engages, driving engine 1, the common vehicle that drives of wheel hub HM Hydraulic Motor 18, and car load becomes 4 wheel drive by 2 wheel drive.The power of driving engine 1 is exported successively and is arrived trailing wheel 8,10 by power-transfer clutch 2, change speed gear box 4, transmission shaft 6, rear driving axle 7,9 on the one hand, and the output of the power of driving engine 1 is arrived front-wheel 17 by tween drive shaft, power takeoff 3, controllable capacity pump 11, the wheel hub HM Hydraulic Motor 18 of change speed gear box 4 successively on the other hand.Transfer route is as shown in the arrow in Fig. 3.
When carry out associating drive pattern recited above, when 4 front-wheels 17 enter hydraulic-driven pattern, and this need to judge according to conditions such as road surface, the speed of a motor vehicle, judges flow process as shown in Figure 4.
Fig. 4 is for adopting the overall control FB(flow block) of follow-on hub hydraulic motor driving system described in the utility model.With reference to figure 4, the switch key from the gauge panel of operator's compartment starts;
When opening switch, if parking return, if not, see the fine or not situation on road surface and be divided into Hao Luhehuai road;
Two kinds of road surface situation control flows are consistent, such as: while being a good road surface, first according to the rotary speed direction after the rotating speed of driving engine and change speed gear box, judging and advance or fall back, if direction unanimously advance, otherwise, fall back.
When car advances or fall back, control flow is similar, such as: when advancing, if occur, emergency braking does not enter hydraulic-driven pattern, and it is 0 that free air capacity is controlled.
Finally judge in the vehicle speed range whether current vehicle speed can use in system and (because hydraulic efficiency pressure system is used when high speed, be easy to generate heat), when the speed of a motor vehicle satisfies condition, illustrate that hydraulic efficiency pressure system can be used.When foregoing condition all reaches satisfied, controller regulates the aperture of pump in real time according to car load real time running state, makes front wheel rotation speed follow rear wheel rotation speed.Until the speed of a motor vehicle surpasses threshold values or chaufeur is closed liquid drive system.
Fig. 5 is the diagram of curves that adopts the vehicle tractive force raising of follow-on hub hydraulic motor driving system of the present utility model.As shown in Figure 5, when vehicle is when fully loaded 100 tons, one grade speed ratio is 12.1, calculating it increases the ratio that can improve tractive force after hydraulic-driven pattern.Wherein, abscissa is adhesion value, ordinate is that tractive force increases ratio (%), Ftf is the propulsive effort (t) that front-wheel 15 can improve, FtR is the propulsive effort (t) that driving engine 1 is passed to trailing wheel 6, Ftf+FtR is total propulsive effort of vehicle, and it is that Ftf obtains with respect to FtR that tractive force increases proportional curve.Fig. 6 is the diagram of curves that the climbable gradient power of the vehicle of employing follow-on hub hydraulic motor driving system of the present utility model improves.When vehicle is when fully loaded 100 tons, one grade speed ratio is 12.1, calculating it increases the ratio that can improve climbable gradient after hydraulic-driven pattern.Wherein, abscissa is adhesion value, ordinate is that tractive force increases ratio (%), Ftf is the propulsive effort (t) that front-wheel 15 can improve, FtR is the propulsive effort (t) that driving engine 1 is passed to trailing wheel 6, GradR is the climbable gradient (%) of vehicle under the propulsive effort of FtR, and GradFR is the climbable gradient (%) of vehicle under FtR and the common propulsive effort of Ftf, and it is that GradR is with respect to the ratio of the climbable gradient of GradFR increase that climbable gradient increases proportional curve.
Utilize the curve shown in Fig. 5 and 6, after adopting follow-on hydraulic booster system of the present utility model, compare with conventional truck, multi-state is adaptable, can significantly improve dynamic property, crossing ability and the hill climbing ability of vehicle, on the road surface between coefficient of road adhesion 0.34-0.57, improve tractive force ratio and be about 10%～23%, climbable gradient raising ratio is about 13%～25%.
Compared with prior art, the beneficial effects of the utility model are:
1. multiaxis hydraulic booster system of the present utility model has improved the tractive property of many nonpowered axles commercial vehicle/comm..vehicle, greatly improves it and passes through performance.Particularly, when automobile is when the reversing of bad road surface is gone up a slope, complete vehicle weight shifts toward front axle, and now, car load tractive force is mainly exported by front-wheel.
2. the hydraulic pressure fixed displacement motor adopting in multiaxis hydraulic booster system of the present utility model is compared with hydraulic variable flow Pump and Electromotor, and specific power is large, and volume is little simultaneously, and quality is light, accounts for car load space little, arranges that mounting structure is simple.For example the specific power of motor is about 1.6kw/kg, and the specific power of HM Hydraulic Motor can reach 3.6kw/kg.
3. multiaxis hydraulic booster system of the present utility model is compared with conventional truck, and multi-state is adaptable, can significantly improve dynamic property, crossing ability and the hill climbing ability of vehicle.
Claims (4)
1. a multiaxis hub hydraulic motor driving system, it is characterized in that, comprise: driving engine, power takeoff, controllable capacity pump, be arranged on four wheel hub HM Hydraulic Motor, the fluid control valve group on four front-wheels and the controller that entire system is controlled respectively, wherein, described fluid control valve group is connected with described controllable capacity pump;
One end of described power takeoff is connected with the driving annex output shaft of described driving engine, the other end of described power takeoff be fixed on the controllable capacity pump mechanical connection on vehicle frame.
2. multiaxis hub hydraulic motor driving system according to claim 1, it is characterized in that, the high pressure oil outlet of described controllable capacity pump is connected by pressure duct with described fluid control valve group high pressure oil inlet, and the low pressure oil inlet of described controllable capacity pump is connected by low pressure line with described fluid control valve group low pressure oil outlet.
3. multiaxis hub hydraulic motor driving system according to claim 2, is characterized in that, the high pressure oil outlet of described fluid control valve group is connected with oil outlet with the oil inlet of described four wheel hub HM Hydraulic Motor by pressure duct with low pressure oil inlet.
4. according to the multiaxis hub hydraulic motor driving system described in claims 1 to 3 any one, it is characterized in that, described four wheel hub HM Hydraulic Motor are the radial piston hydraulic motor that structure is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320733954.4U CN203511304U (en) | 2013-11-19 | 2013-11-19 | Multi-shaft hydraulic drive system for hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320733954.4U CN203511304U (en) | 2013-11-19 | 2013-11-19 | Multi-shaft hydraulic drive system for hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203511304U true CN203511304U (en) | 2014-04-02 |
Family
ID=50370283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320733954.4U Expired - Lifetime CN203511304U (en) | 2013-11-19 | 2013-11-19 | Multi-shaft hydraulic drive system for hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203511304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150770A (en) * | 2015-09-25 | 2015-12-16 | 武汉神骏专用汽车制造股份有限公司 | Combined hydraulic suspension trailer having auxiliary driving function |
| CN105459804A (en) * | 2015-12-30 | 2016-04-06 | 吉林大学 | Hub motor hydraulic hybrid power system |
-
2013
- 2013-11-19 CN CN201320733954.4U patent/CN203511304U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105150770A (en) * | 2015-09-25 | 2015-12-16 | 武汉神骏专用汽车制造股份有限公司 | Combined hydraulic suspension trailer having auxiliary driving function |
| CN105459804A (en) * | 2015-12-30 | 2016-04-06 | 吉林大学 | Hub motor hydraulic hybrid power system |
| CN105459804B (en) * | 2015-12-30 | 2017-10-13 | 吉林大学 | Hub motor hydraulic hybrid power system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103407449B (en) | A kind of hydraulic pressure assistive drive and brake system and control method thereof | |
| CN103568810B (en) | Energy recyclable auxiliary hub motor hydraulic driving system and control method thereof | |
| CN103569098B (en) | Hydraulic pressure process auxiliary drive and brakes and control method thereof | |
| CN102358163B (en) | Hydraulic driving system for hub motor | |
| CN203528285U (en) | Hydraulic auxiliary hub motor drive system with energy recovery capacity | |
| CN1927609B (en) | Motor driving system with speed adaptation capability and controlling method thereof | |
| CN107310371A (en) | A kind of liquid-driving mixed power system of independent Direct wheel drives | |
| CN107215213A (en) | A kind of commercial car electric power-assisted braking system and its method | |
| CN103950369A (en) | Petroleum-electric hybrid power trackless rubber-tyred vehicle | |
| CN105966381A (en) | Intelligent electronic inter-axle torque distribution control system and method for coal mine all-wheel drive vehicle | |
| CN203439027U (en) | Hydraulic auxiliary drive and brake system | |
| CN203651750U (en) | Hydraulic auxiliary driving and braking system | |
| CN203819014U (en) | Double-motor traveling system for vehicle | |
| CN101722828B (en) | Driving system of wheel-drive type hydrostatic transmission hybrid vehicle | |
| US20130240279A1 (en) | Hybrid tandem drive axle of a truck vehicle | |
| CN111688410A (en) | Vehicle axle with hydraulic retarder | |
| CN203511304U (en) | Multi-shaft hydraulic drive system for hub motor | |
| CN202965953U (en) | Mining electric trackless rubber-tired vehicle | |
| WO2013078819A1 (en) | Engineering truck and driving system thereof | |
| CN102328582A (en) | Electric automobile with electric self-driven wheels | |
| CN206813009U (en) | Track-mounted machinery hybrid power transmission system | |
| CN202180739U (en) | Electric sedan with electric power self-driving wheels | |
| CN203528295U (en) | Improved hub motor hydraulic drive system | |
| CN1273318C (en) | Mixing power driven semi-mounted type lorry | |
| CN202219726U (en) | Hub hydraulic motor driving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |