CN202644609U - Full hydraulic bulldozer traveling driving hydraulic device - Google Patents
Full hydraulic bulldozer traveling driving hydraulic device Download PDFInfo
- Publication number
- CN202644609U CN202644609U CN 201220264483 CN201220264483U CN202644609U CN 202644609 U CN202644609 U CN 202644609U CN 201220264483 CN201220264483 CN 201220264483 CN 201220264483 U CN201220264483 U CN 201220264483U CN 202644609 U CN202644609 U CN 202644609U
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- hydraulic
- pump
- way valve
- variable
- bulldozer
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Abstract
The utility model discloses a full hydraulic bulldozer traveling driving hydraulic device and relates to a structure component of a bulldozer adopting hydraulic driving. The full hydraulic bulldozer traveling driving hydraulic device comprises a controller, two digital hydraulic cylinders, a pressure sensor, a variable pump, a diesel engine, a charging pump, a cooler, a filter, a charging overflow valve, two charging one-way valves, an energy accumulator, a pressure relay, a two-position three-way valve, a hydraulic transformer, a two-position two-way valve, a variable motor, a torque sensor, a high-pressure safety valve, an oil tank and two master check valves. The full hydraulic bulldozer traveling driving hydraulic device combines power matching and secondary regulation technology applying to the full hydraulic bulldozer, achieves the purpose of energy conservation and overcomes the defects of high energy consumption of the existing full hydraulic bulldozer.
Description
Technical field
The technical solution of the utility model relates to the structure member that adopts hydraulically powered bulldozer, specifically the full hydraulic bulldozer driving hydraulic means that travels.
Background technology
Existing engineering machinery capacity usage ratio is low, and general hydraulicdriven efficient is 50%～70%, and the efficient of some walking machine is then lower.Take hydraulic crawler excavator and concrete pump truck as example, total capacity usage ratio only is about 20%, and power utilization is 50%～70%.Existing bulldozer is mostly take machine driving and hydraulic machine transmission as main, inefficiency.The power source of engineering machinery mainly is diesel engine, and the discharging of diesel engine and fuel economy receive people's very big concern.The engineering machinery energy utilizes low one of the main reasons to be: in the situation that load behavior changes, pump and motor, pump and hydraulic pressure transfer system can not keep good coupling, thereby motor can not be moved at best operating point or best effort district.When power did not mate, the capacity usage ratio of engineering machinery was low, and the energy major part of loss is transformed into heat, showed as system's heating, had affected the reliability of system, and then caused maintenance cost and the increase of the loss that delays work, and made the user be difficult to bear.In the time of existing bulldozer braking, its kinetic energy major part has lost with form of heat, if this part energy is reclaimed recycling, then can reduce energy loss.Secondary Regulation Technology can reclaim Brake Energy, but existing secondary adjusting is to allow secondary component be operated under the constant pressure network, if variable pump remains constant voltage, that just can not keep constant output characteristic, so motor just can not be operated in best operating point.In a word, there is the high shortcoming of energy consumption in existing full hydraulic bulldozer.Under the serious nervous overall background of global resources, how to take full advantage of the power of diesel engine, the energy consumption that reduces whole system and become the important topic that the scientific worker of engineering machinery field must study.
The utility model content
Technical problem to be solved in the utility model is: the full hydraulic bulldozer driving hydraulic means that travels is provided, this device is power match and Secondary Regulation Technology to be combined be applied on the full hydraulic bulldozer, reach energy-conservation purpose, have the high shortcoming of energy consumption to overcome existing full hydraulic bulldozer.
The utility model solves this technical problem the technical scheme that adopts: the full hydraulic bulldozer driving hydraulic means that travels comprises controller, two Numeric hydraulic cylinders, pressure sensor, variable pump, Diesel engine, slippage pump, cooler, strainer, repairing overflow valve, two repairing one way valves, accumulator, pressure switch, two-position three-way valve, hydraulic transformer, 2/2-way valve, variable displacement motor, torque sensor, high-pressure safety valve, fuel tank and two master control one way valves; The connected mode of all parts is, controller respectively with two Numeric hydraulic cylinders, pressure sensor, Diesel engine, two-position three-way valve, the 2/2-way valve is connected pilot with torque sensor and connects, a Numeric hydraulic cylinder is connected with variable pump, another Numeric hydraulic cylinder is connected with variable displacement motor, variable pump and Diesel engine are rigidly connected, variable pump is connected closed circuit and is connected with the master control one way valve with variable displacement motor, Diesel engine is connected with slippage pump, slippage pump is connected with fuel tank by strainer, slippage pump is connected with fuel tank by the repairing overflow valve again, slippage pump also is connected with variable pump by the repairing one way valve, cooler is connected with variable displacement motor with variable pump respectively, accumulator is connected by wire with pressure switch, accumulator also is connected with hydraulic transformer by two-position three-way valve, hydraulic transformer links to each other with the 2/2-way valve, the 2/2-way valve is connected with variable displacement motor with variable pump, variable displacement motor is connected with load, high-pressure safety valve is connected with variable pump by the master control one way valve, high-pressure safety valve is connected with fuel tank, above-mentioned method of attachment is except the method for attachment that specializes by the oil pipe pipeline and connects.
The above-mentioned full hydraulic bulldozer driving hydraulic means that travels, described controller adopts the digital signal processor (DSP) of Harvard structure; Described Diesel engine adopts comings NT855 Diesel engine; Described variable pump adopts the A4VG high-pressure plunger variable pump of German BOSCH-REXROTH company; Described variable displacement motor adopts the A6VE variable displacement motor of German BOSCH-REXROTH company; Described Numeric hydraulic cylinder adopts miniaturization external driving Numeric hydraulic cylinder; Described accumulator adopts bladder accumulator; Described hydraulic transformer adopts Dutch Innas hydraulic transformer; Pressure sensor, slippage pump, cooler, strainer, repairing overflow valve, repairing one way valve, pressure switch, two-position three-way valve, 2/2-way valve, torque sensor, high-pressure safety valve, fuel tank, master control one way valve can adopt the general equipment of the art; Related parts all can be commercially available.
The above-mentioned full hydraulic bulldozer driving hydraulic means that travels, the connection between the described parts and setting are that those skilled in the art know.
The beneficial effects of the utility model are: the travel characteristics that drive hydraulic means of the utility model full hydraulic bulldozer are power match and Secondary Regulation Technology to be combined be applied on the full hydraulic bulldozer, reach energy-conservation purpose.Its principle is as follows: the local link of Diesel engine (5) and variable pump (4) takes full advantage of the power output of motor by power match, realize Energy Saving Control; And regulate to realize that by secondary energy reclaims the purpose that reaches energy-conservation between load and the pump.
The matching principle of variable pump (4) and Diesel engine (5) is exactly to keep the real work point of motor to change near best operating point.The variation of extraneous load can make the rotating speed of motor and torque also change, and causes motor off-target operating point, so will carry out the coupling of Diesel engine (5) and variable pump (4).
The coupling of Diesel engine (5) and variable pump (4) is exactly the power output that power that variable pump (4) is absorbed equals Diesel engine (5), namely
N
e=N
p （1）
In the formula, N
e-engine output; N
pThe absorbed power of-pump
So:
n
eM
e＝n
pM
p (2)
In the formula, n
e-engine speed; n
p-revolution speed; M
e-motor torque; M
p-pump running torque
Because Diesel engine (5) is rigidly connected n with variable pump (4)
e=n
pSo,
M
e=M
p （3）
M
e=P
bq
b/2π (4)
In the formula, P
b-pump hydraulic coupling; q
b-pumpage
P
pDepend on load.When load becomes large (little), P
pBecome large (little), the absorption torque of pump becomes large (little), so the rotating speed of Diesel engine (5) can descend (rising).At this moment, the discharge capacity of regulated variable pump (4), make its diminish (greatly), (rising) is to initial set value until the absorption torque of pump descends.Motor will be operated in best operating point again like this, thereby realize the power match of Diesel engine (5) with variable pump (4).
Introduced the kinetic energy that Secondary Regulation Technology comes recovery vehicle between pump and the load, then reasonably controlled the release of storage power, the work of proportioning pump enables to be fully utilized.Secondary regulation device comprises secondary component variable displacement motor (16), accumulator (11) and load.When secondary component is operated in the operating mode of motor, drive outer load acting; When being operated in the operating mode of pump, can reclaim kinetic energy or the gravitional force of vehicle, realize that thus energy reclaims the purpose that reaches energy-conservation.
The progress that drives hydraulic means of travelling of the utility model full hydraulic bulldozer also is:
(1) in this device, in the time of car brakeing, regulate secondary component variable displacement motor (16) by controller (1), make its operating mode that is operated in pump, motor and pump begin idling, and at this moment secondary component stores the kinetic energy of vehicle in the accumulator into.Pressure switch can arrange the maximum pressure of accumulator, and when accumulator has reached maximum pressure, by controller control two-position three-way valve (13), the hydraulic oil guiding fuel tank (19) with unnecessary plays safety effect.When vehicle start, controller (1) can be controlled accumulator (11) according to actual condition and release energy, and cooperates variable pump (4) to work together.
(2) introduced hydraulic transformer (14) in this device, the use of connecting with accumulator (11), after hydraulic accumulator (11) front end has had hydraulic transformer (14) and pressure switch (12) to carry out the pressure adjusting, maximum working pressure can not be subjected to the restriction of system when its initialization pressure and energy storage, hydraulic accumulator (11) use of connecting with adjustable hydraulic pressure transformer (14) can be optimized the storage capacity of hydraulic accumulator (11).
(3) executive component of adjusting secondary component and variable pump (4) discharge capacity is Numeric hydraulic cylinder (2) in this device.Numeric hydraulic cylinder (2) can directly be controlled with data signal, comes the accomplish linear motion, has simple in structure, control accuracy high compared with the executing agency of existing control displacement variation.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is that the utility model full hydraulic bulldozer travels and drives the formation structural representation of hydraulic means.
Among the figure, 1. controller, 2. Numeric hydraulic cylinder, 3. pressure sensor, 4. variable pump, 5. Diesel engine, 6. slippage pump, 7. cooler, 8. strainer, 9. repairing overflow valve, 10. repairing one way valve, 11. accumulators, 12. pressure switch, 13. two-position three-way valves, 14. hydraulic transformers, 15. the 2/2-way valve, 16. variable displacement motors, 17. torque sensors, 18. high-pressure safety valve, 19. fuel tanks, 20. master control one way valves.
The specific embodiment
Embodiment illustrated in fig. 1 showing, the full hydraulic bulldozer driving hydraulic means that travels comprises controller (1), two Numeric hydraulic cylinders (2), pressure sensor (3), variable pump (4), Diesel engine (5), slippage pump (6), cooler (7), strainer (8), repairing overflow valve (9), two repairing one way valves (10), accumulator (11), pressure switch (12), two-position three-way valve (13), hydraulic transformer (14), 2/2-way valve (15), variable displacement motor (16), torque sensor (17), high-pressure safety valve (18), fuel tank (19) and two master control one way valves (20); The connected mode of all parts is, controller (1) respectively with two Numeric hydraulic cylinders (2), pressure sensor (3), Diesel engine (5), two-position three-way valve (13), 2/2-way valve (15) is connected 17 with torque sensor) connect by pilot, a Numeric hydraulic cylinder (2) is connected with variable pump (4), another Numeric hydraulic cylinder (2) is connected with variable displacement motor (16), variable pump (4) and Diesel engine (5) are rigidly connected, variable pump (4) is connected 16 with variable displacement motor) form closed circuit and be connected with master control one way valve (20), Diesel engine (5) is connected with slippage pump (6), slippage pump (6) is connected with fuel tank (19) by strainer (8), slippage pump (6) is connected with fuel tank (19) by repairing overflow valve (9) again, slippage pump (6) also is connected with variable pump (4) by repairing one way valve (10), cooler (7) is connected 16 with variable pump (4) with variable displacement motor respectively) be connected, accumulator (11) is connected by wire with pressure switch (12), accumulator (11) also is connected 14 by two-position three-way valve (13) with hydraulic transformer) connect, hydraulic transformer (14) links to each other with 2/2-way valve (15), 2/2-way valve (15) is connected 16 with variable pump (4) with variable displacement motor) be connected, variable displacement motor (16) is connected with load, high-pressure safety valve (18) is connected 4 by master control one way valve (20) with variable pump) connect, high-pressure safety valve (18) is connected 19 with fuel tank) connect, above-mentioned method of attachment is except the method for attachment that specializes by the oil pipe pipeline and connects.
In the above-mentioned component parts, the effect of repairing one way valve (10) is to realize simultaneously two-way oil compensation, high-pressure safety valve (18) limits maximum working pressure, master control one way valve (20) is realized two-way pressure limiting, slippage pump (6) is used for the system that remedies to be revealed, cooler (7) is connected in the oil circuit with cooling down high-temperature hydraulic oil, and strainer (8) can filter out the impurity in the hydraulic oil, and 2/2-way valve (15) links to each other with controller (1) and is used for cut-offfing of control accumulator (11).
In above-described embodiment, controller used thereby (1) adopts the digital signal processor (DSP) of Harvard structure; Described Diesel engine (5) adopts comings NT855 Diesel engine; The A4VG high-pressure plunger variable pump of the German BOSCH-REXROTH of described variable pump (4) employing company; The A6VE variable displacement motor of the German BOSCH-REXROTH of described variable displacement motor (16) employing company; Described Numeric hydraulic cylinder (2) adopts miniaturization external driving Numeric hydraulic cylinder; Described accumulator (11) adopts bladder accumulator; Described hydraulic transformer (14) adopts Dutch Innas hydraulic transformer; Pressure sensor, slippage pump, cooler, strainer, repairing overflow valve, repairing one way valve, pressure switch, two-position three-way valve, 2/2-way valve, torque sensor, high-pressure safety valve, fuel tank, master control one way valve can adopt the general equipment of the art; Related parts all can be commercially available.
In above-described embodiment, the connection between all parts and setting are that those skilled in the art are known.
Claims (1)
1. the full hydraulic bulldozer driving hydraulic means that travels is characterized in that: comprise controller, two Numeric hydraulic cylinders, pressure sensor, variable pump, Diesel engine, slippage pump, cooler, strainer, repairing overflow valve, two repairing one way valves, accumulator, pressure switch, two-position three-way valve, hydraulic transformer, 2/2-way valve, variable displacement motor, torque sensor, high-pressure safety valve, fuel tank and two master control one way valves; The connected mode of all parts is, controller respectively with two Numeric hydraulic cylinders, pressure sensor, Diesel engine, two-position three-way valve, the 2/2-way valve is connected pilot with torque sensor and connects, a Numeric hydraulic cylinder is connected with variable pump, another Numeric hydraulic cylinder is connected with variable displacement motor, variable pump and Diesel engine are rigidly connected, variable pump is connected closed circuit and is connected with the master control one way valve with variable displacement motor, Diesel engine is connected with slippage pump, slippage pump is connected with fuel tank by strainer, slippage pump is connected with fuel tank by the repairing overflow valve again, slippage pump also is connected with variable pump by the repairing one way valve, cooler is connected with variable displacement motor with variable pump respectively, accumulator is connected by wire with pressure switch, accumulator also is connected with hydraulic transformer by two-position three-way valve, hydraulic transformer links to each other with the 2/2-way valve, the 2/2-way valve is connected with variable displacement motor with variable pump, variable displacement motor is connected with load, high-pressure safety valve is connected with variable pump by the master control one way valve, high-pressure safety valve is connected with fuel tank, above-mentioned connected mode is by the oil pipe pipeline and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264483 CN202644609U (en) | 2012-06-06 | 2012-06-06 | Full hydraulic bulldozer traveling driving hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264483 CN202644609U (en) | 2012-06-06 | 2012-06-06 | Full hydraulic bulldozer traveling driving hydraulic device |
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| Publication Number | Publication Date |
|---|---|
| CN202644609U true CN202644609U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220264483 Expired - Fee Related CN202644609U (en) | 2012-06-06 | 2012-06-06 | Full hydraulic bulldozer traveling driving hydraulic device |
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| CN (1) | CN202644609U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847719A (en) * | 2014-09-24 | 2015-08-19 | 北汽福田汽车股份有限公司 | Closed oil pump hydraulic system and engineering machinery having same |
| WO2015191661A1 (en) | 2014-06-10 | 2015-12-17 | Eaton Corporation | Energy recovery system for off-highway vehicles with hydraulic transformer coupled to transmission power take-off |
| CN110552387A (en) * | 2019-09-17 | 2019-12-10 | 山推工程机械股份有限公司 | Full hydraulic bulldozer |
| 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 |
| WO2021212714A1 (en) * | 2020-04-22 | 2021-10-28 | 山河智能装备股份有限公司 | Pressure coupling hydraulic hybrid power driving circuit and control method therefor, and excavator |
| CN113565161A (en) * | 2021-05-27 | 2021-10-29 | 山推工程机械股份有限公司 | Hybrid static pressure bulldozer traveling system |
-
2012
- 2012-06-06 CN CN 201220264483 patent/CN202644609U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015191661A1 (en) | 2014-06-10 | 2015-12-17 | Eaton Corporation | Energy recovery system for off-highway vehicles with hydraulic transformer coupled to transmission power take-off |
| CN106660450A (en) * | 2014-06-10 | 2017-05-10 | 伊顿公司 | Energy recovery system for off-highway vehicles with hydraulic transformer coupled to transmission power take-off |
| EP3154809A4 (en) * | 2014-06-10 | 2018-06-13 | Eaton Corporation | Energy recovery system for off-highway vehicles with hydraulic transformer coupled to transmission power take-off |
| US11286642B2 (en) | 2014-06-10 | 2022-03-29 | Danfoss Power Solutions Ii Technology A/S | Energy recovery system for off-highway vehicles with hydraulic transformer coupled to transmission power take-off |
| CN104847719A (en) * | 2014-09-24 | 2015-08-19 | 北汽福田汽车股份有限公司 | Closed oil pump hydraulic system and engineering machinery having same |
| CN110552387A (en) * | 2019-09-17 | 2019-12-10 | 山推工程机械股份有限公司 | Full hydraulic bulldozer |
| CN110552387B (en) * | 2019-09-17 | 2022-03-29 | 山推工程机械股份有限公司 | Full hydraulic bulldozer |
| WO2021212714A1 (en) * | 2020-04-22 | 2021-10-28 | 山河智能装备股份有限公司 | Pressure coupling hydraulic hybrid power driving circuit and control method therefor, and excavator |
| 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 |
| CN113565161A (en) * | 2021-05-27 | 2021-10-29 | 山推工程机械股份有限公司 | Hybrid static pressure bulldozer traveling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: No.1 Rock-soil Engineering Co., Ltd., China Chemical Engineering Corp. Assignor: Hebei University of Technology Contract record no.: 2013130000052 Denomination of utility model: Full hydraulic bulldozer traveling driving hydraulic device Granted publication date: 20130102 License type: Exclusive License Record date: 20130711 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20190606 |