CN107476364A - A kind of speed control system with adjustable displacement of hydraulic crawler excavator - Google Patents
A kind of speed control system with adjustable displacement of hydraulic crawler excavator Download PDFInfo
- Publication number
- CN107476364A CN107476364A CN201710674011.1A CN201710674011A CN107476364A CN 107476364 A CN107476364 A CN 107476364A CN 201710674011 A CN201710674011 A CN 201710674011A CN 107476364 A CN107476364 A CN 107476364A
- Authority
- CN
- China
- Prior art keywords
- mouths
- main pump
- dipper
- swing arm
- pump
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2289—Closed circuit
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
Abstract
A kind of speed control system with adjustable displacement of hydraulic crawler excavator, belong to hydraulic transmission technology field, including prime mover, energy-storage travelling wave tube, dynamotor, swing arm, dipper, scraper bowl, left lateral is walked, right lateral is walked, turns round closed circuit, controller, the converging valve of swing arm first, second, the converging valve of dipper first, second, fuel tank, controller, it is characterized in that：The input shaft of transfer case couples with prime mover, and the first transfer axle of transfer case is walked main pump with swing arm, left lateral and coupled, and the second transfer axle of transfer case is walked main pump with dipper, right lateral and coupled, and the 3rd transfer axle of transfer case couples with scraper bowl, revolution main pump；The converging valve of swing arm first, second, the converging valve of dipper first, second are two-bit triplet reversal valve.Advantage is to compensate for asymmetric flow caused by asymmetrical cylinder using new pump control asymmetrical cylinder technology, and the discharge capacity of main pump is reduced using Dual-pump flow-converging technology, and capacity usage ratio is improved using the distribution of multiaxis power, volumetric speed control and Technology of Hybrid Electric Vehicle.
Description
Technical field
The invention belongs to hydraulic transmission technology field, and in particular to a kind of speed control system with adjustable displacement of hydraulic crawler excavator.
Background technology
With the great development of China's construction machinery industry, excavator turns into one of important pillar industry, effectively drop
Energy consumption in low hydraulic crawler excavator work is significant.
Pump control cylinder hydraulic circuit belongs to volumetric speed control technology, compared to throttling speed control circuit and volume-flow control circuit,
The whole efficiency in pump control cylinder loop is much higher.The hydraulic hybrid of actuator is done in U.S.'s Caterpillar application using pump control cylinder with differential effect
Power digger patent, develop model machine cooperatively with professor Monika of Purdue Univ-West Lafayette USA.At present, such as excavator and loading
Need to use two hydraulic pumps in pump control asymmetric cylinder loop in the engineering machinery such as machine, or using hydraulic transformer or
Person compensates asymmetric flow using hydraulic control one-way valve, the problems such as cost is high, energy-saving effect is undesirable, technical sophistication be present.Shen
The technical scheme using auxiliary cylinders compensation working cylinder asymmetry flow please be proposed in numbers 201710568689.1, cost is low, energy-conservation
Effect is good, has good prospect in the field such as excavator and loading machine, but current excavator field is still without corresponding hydraulic pressure
Transmission system distributes the technical problem collaborated with flow to solve associated power.
The content of the invention
, can be efficiently against depositing in the prior art it is an object of the present invention to provide a kind of speed control system with adjustable displacement of hydraulic crawler excavator
The problem of.
The object of the present invention is achieved like this, as shown in figure 1, it includes prime mover 1, dynamotor 2, commutation inversion
Device 27, energy-storage travelling wave tube 15, swing arm main pump 4, left lateral walk main pump 5, the first slippage pump 6, the converging valve 7,8, first of swing arm first, second
Feed circuit 9, left walking loop 10, movable arm loop 11, dipper main pump 12, right lateral walk main pump 13, the second slippage pump 14, dipper
First, second the 16,17, second feed circuit 18 of converging valve, right walking loop 19, dipper loop 20, scraper bowl main pump 21, revolution main pump
22nd, the 3rd slippage pump 23, the 3rd feed circuit 24, rotary loop 25, scraper bowl loop 26, pilot control, controller, operation handle
With foot pedal apparatus, filter, cooler, fuel tank, it is characterized in that：The input shaft of described transfer case 3 couples with prime mover 1, point
The main shaft that first transfer axle of dynamic case 3 walks main pump 5 with swing arm main pump 4, left lateral couples, the second transfer axle and dipper of transfer case 3
Main pump 12, right lateral walk the main shaft connection of main pump 13, the master of the 3rd transfer axle and scraper bowl main pump 21, revolution main pump 22 of transfer case 3
Axle couples；
The converging valve 7 of swing arm first, second, 8, the converging valve 16,17 of dipper first, second are three-way diverter valve, and swing arm first collaborates
A mouths, B mouths, the C mouths of valve 7 are walked the Pb mouths of main pump 5, the B mouths of left walking loop 10, the Pb mouths of swing arm main pump 4 with left lateral and connected respectively
Logical, A mouths, B mouths, the C mouths of the second converging valve of swing arm 8 walk the Pa mouths of main pump 5, A mouths, the swing arm of left walking loop 10 with left lateral respectively
The Pa mouths connection of main pump 4, Pb mouths, the right lateral that A mouths, B mouths, the C mouths of the first converging valve of dipper 16 walk main pump 13 with right lateral respectively are walked
The Pb mouths connection of the B mouths, dipper main pump 12 in loop 19, A mouths, B mouths, the C mouths of the second converging valve of dipper 17 walk master with right lateral respectively
The Pa mouths connection of the Pa mouths of pump 13, the A mouths of right walking loop 19, dipper main pump 12.
The converging valve 7 of described swing arm first, second, 8, the converging valve 16,17 of dipper first, second are two-bit triplet commutation
Valve.
Advantage of the present invention and good effect are：
Asymmetric flow caused by asymmetrical cylinder compensate for using new pump control asymmetrical cylinder technology, subtracted using Dual-pump flow-converging technology
The small discharge capacity of main pump, capacity usage ratio is improved using the distribution of multiaxis power, volumetric speed control and Technology of Hybrid Electric Vehicle.Whole system
Cost of uniting is relatively low, efficiency high, technology maturation, and market prospects are good.
Brief description of the drawings
Fig. 1 is the speed control system with adjustable displacement schematic diagram of hydraulic crawler excavator.
In figure：1- prime mover, 2 dynamotor, 3- transfer gears, 4- swing arm main pumps, 5- left lateral walk main pump, the repairings of 6- first
Pump, the converging valve of 7- swing arms first, the converging valve of 8- swing arms second, the feed circuits of 9- first, the left walking loops of 10-, 10- swing arms return
Road, 12- dipper main pumps, 13- right laterals walk main pump, the slippage pumps of 14- second, 15- energy-storage travelling wave tubes, the converging valve of 16- dippers first, 17-
The converging valve of dipper second, the feed circuits of 18- second, the right walking loops of 19-, 20- dippers loop, 21- scraper bowl main pumps, 22- revolutions
Main pump, the slippage pumps of 23- the 3rd, the feed circuits of 24- the 3rd, 25- rotary loops, 26- scraper bowls loop, 27- rectification adversers.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention includes prime mover 1, dynamotor 2, rectification adverser 27, energy-storage travelling wave tube 15, swing arm
Main pump 4, left lateral walk main pump 5, the first slippage pump 6, the 7,8, first feed circuit 9 of converging valve of swing arm first, second, left walking loop
10th, movable arm loop 11, dipper main pump 12, right lateral walk main pump 13, the second slippage pump 14, the converging valve 16 of dipper first, second, 17,
Second feed circuit 18, right walking loop 19, dipper loop 20, scraper bowl main pump 21, revolution main pump 22, the 3rd slippage pump 23, the
Three feed circuits 24, rotary loop 25, scraper bowl loop 26, pilot control, controller, operation handle and foot pedal apparatus, filter,
Cooler, fuel tank, the input shaft of transfer case 3 are coupled by dynamotor 2 with prime mover 1, and dynamotor 2 passes through motor control
Device 27 processed is connected with energy-storage travelling wave tube 15, and the first transfer axle and swing arm main pump 4, the left lateral of transfer case 3 walk main pump 5, the first slippage pump 6
Main shaft coupled in series, the second transfer axle of transfer case 3 walks main pump 13, the master of the second slippage pump 14 with dipper main pump 12, right lateral
Axle coupled in series, the 3rd transfer axle of transfer case 3 are connected with the main shaft of scraper bowl main pump 21, revolution main pump 22, the 3rd slippage pump 23
Connection；
The converging valve 7 of swing arm first, second, 8, the converging valve 16,17 of dipper first, second are the commutation of two-bit triplet electromagnetism plug-in
Valve, A mouths, B mouths, the C mouths of the first converging valve of swing arm 7 walk the Pb mouths of main pump 5, B mouths, the swing arm of left walking loop 10 with left lateral respectively
The Pb mouths connection of main pump 4, Pa mouths, the left lateral that A mouths, B mouths, the C mouths of the second converging valve of swing arm 8 walk main pump 5 with left lateral respectively walk back
The Pa mouths connection of the A mouths, swing arm main pump 4 on road 10, A mouths, B mouths, the C mouths of the first converging valve of dipper 16 walk main pump 13 with right lateral respectively
Pb mouths, the B mouths of right walking loop 19, dipper main pump 12 the connection of Pb mouths, A mouths, B mouths, the C mouths point of the second converging valve of dipper 17
The Pa mouths of main pump 13, the A mouths of right walking loop 19, the Pa mouths of dipper main pump 12 are not walked with right lateral to connect, the Pa mouths of swing arm main pump 4
Connected respectively with the A mouths and B mouths of movable arm loop 11 with Pb mouths, the Pa mouths and Pb mouths of dipper main pump 12 respectively with dipper loop 20
A mouths connect with B mouths, and the Pa mouths and Pb mouths of scraper bowl main pump 21 connect with the A mouths and B mouths in scraper bowl loop 26 respectively, turn round main pump 22
Pa mouths and Pb mouths connected respectively with the A mouths and B mouths of rotary loop 25, the oil inlet and oil-out of the first slippage pump 6 respectively with
Fuel tank and the first feed circuit 9 connect, the oil inlet and oil-out of the second slippage pump 14 respectively with fuel tank and the second feed circuit
18 connections, the oil inlet and oil-out of the 3rd slippage pump 23 connect with fuel tank and the 3rd feed circuit 24 respectively.
Described operation handle and foot pedal apparatus are electrically operated handle and electric foot pedal apparatus；
When left walking loop 10 works, the power-off of the converging valve 7,8 of swing arm first, second, the A mouths and B mouths of the first converging valve of swing arm 7
To connect, the A mouths of the second converging valve of swing arm 8 are connected with B mouths, when left walking loop 10 does not work, the converging valve of swing arm first, second
7th, 8 it is powered, the A mouths of the first converging valve of swing arm 7 are connected with C mouths, and the A mouths of the second converging valve of swing arm 8 are connected with C mouths, swing arm main pump 4
Main pump 5, which is walked, with left lateral realizes interflow；When right walking loop 19 works, the power-off of the converging valve 16,17 of dipper first, second, dipper
The A mouths of first converging valve 16 are connected with B mouths, and the A mouths of the second converging valve of dipper 17 are connected with B mouths, when right walking loop 19 not work
When making, the converging valve 16,17 of dipper first, second is powered, and the A mouths of the first converging valve of dipper 16 are connected with C mouths, and dipper second collaborates
The A mouths of valve 17 are connected with C mouths, and dipper main pump 12 and right lateral walk main pump 13 and realize interflow.
Claims (2)
1. a kind of speed control system with adjustable displacement of hydraulic crawler excavator, it includes prime mover（1）, dynamotor（2）, rectification adverser
（27）, energy-storage travelling wave tube（15）, swing arm main pump（4）, left lateral walk main pump（5）, the first slippage pump（6）, the converging valve of swing arm first, second
（7、8）, the first feed circuit（9）, left walking loop（10）, movable arm loop（11）, dipper main pump（12）, right lateral walk main pump
（13）, the second slippage pump（14）, the converging valve of dipper first, second（16、17）, the second feed circuit（18）, right walking loop
（19）, dipper loop（20）, scraper bowl main pump（21）, revolution main pump（22）, the 3rd slippage pump（23）, the 3rd feed circuit（24）、
Rotary loop（25）, scraper bowl loop（26）, pilot control, controller, operation handle and foot pedal apparatus, filter, cooler, oil
Case, it is characterized in that：Described transfer case（3）Input shaft and prime mover（1）Connection, transfer case（3）The first transfer axle with it is dynamic
Arm main pump（4）, left lateral walk main pump（5）Main shaft connection, transfer case（3）The second transfer axle and dipper main pump（12）, right lateral walks
Main pump（13）Main shaft connection, transfer case（3）The 3rd transfer axle and scraper bowl main pump（21）, revolution main pump（22）Main shaft connection
Connect；
The converging valve of swing arm first, second（7、8）, the converging valve of dipper first, second（16、17）For three-way diverter valve, swing arm first
Converging valve（7）A mouths, B mouths, C mouths walk main pump with left lateral respectively（5）Pb mouths, left walking loop（10）B mouths, swing arm main pump
（4）Pb mouths connection；The converging valve of swing arm second（8）A mouths, B mouths, C mouths walk main pump with left lateral respectively（5）Pa mouths, left lateral walks
Loop（10）A mouths, swing arm main pump（4）Pa mouths connection；The converging valve of dipper first（16）A mouths, B mouths, C mouths respectively with right lateral
Walk main pump（13）Pb mouths, right walking loop（19）B mouths, dipper main pump（12）Pb mouths connection；The converging valve of dipper second
（17）A mouths, B mouths, C mouths walk main pump with right lateral respectively（13）Pa mouths, right walking loop（19）A mouths, dipper main pump（12）
Pa mouths connection.
2. a kind of speed control system with adjustable displacement of hydraulic crawler excavator as claimed in claim 1, it is characterized in that described swing arm first, the
Two converging valves（7、8）, the converging valve of dipper first, second（16、17）For two-bit triplet reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710674011.1A CN107476364A (en) | 2017-08-09 | 2017-08-09 | A kind of speed control system with adjustable displacement of hydraulic crawler excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710674011.1A CN107476364A (en) | 2017-08-09 | 2017-08-09 | A kind of speed control system with adjustable displacement of hydraulic crawler excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107476364A true CN107476364A (en) | 2017-12-15 |
Family
ID=60598819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710674011.1A Pending CN107476364A (en) | 2017-08-09 | 2017-08-09 | A kind of speed control system with adjustable displacement of hydraulic crawler excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107476364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268028A (en) * | 2020-10-19 | 2021-01-26 | 山推工程机械股份有限公司 | Road roller walking system and walking control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140165549A1 (en) * | 2012-12-19 | 2014-06-19 | Caterpillar Inc. | Hydraulic system having multiple closed loop circuits |
| CN104196080A (en) * | 2014-09-17 | 2014-12-10 | 太原理工大学 | Variable-speed volume-control direct-drive all-electric hydraulic excavator drive and energy recovery system |
| CN104294877A (en) * | 2014-09-17 | 2015-01-21 | 太原理工大学 | Active and passive compound control system for hybrid power hydraulic excavator |
| CN106223393A (en) * | 2016-09-18 | 2016-12-14 | 唐忠盛 | A kind of digitized electric hydraulic excavating machine |
| JPWO2014168058A1 (en) * | 2013-04-11 | 2017-02-16 | 日立建機株式会社 | Drive device for work machine |
-
2017
- 2017-08-09 CN CN201710674011.1A patent/CN107476364A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140165549A1 (en) * | 2012-12-19 | 2014-06-19 | Caterpillar Inc. | Hydraulic system having multiple closed loop circuits |
| JPWO2014168058A1 (en) * | 2013-04-11 | 2017-02-16 | 日立建機株式会社 | Drive device for work machine |
| CN104196080A (en) * | 2014-09-17 | 2014-12-10 | 太原理工大学 | Variable-speed volume-control direct-drive all-electric hydraulic excavator drive and energy recovery system |
| CN104294877A (en) * | 2014-09-17 | 2015-01-21 | 太原理工大学 | Active and passive compound control system for hybrid power hydraulic excavator |
| CN106223393A (en) * | 2016-09-18 | 2016-12-14 | 唐忠盛 | A kind of digitized electric hydraulic excavating machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268028A (en) * | 2020-10-19 | 2021-01-26 | 山推工程机械股份有限公司 | Road roller walking system and walking control method |
| CN112268028B (en) * | 2020-10-19 | 2023-01-06 | 山推工程机械股份有限公司 | Road roller walking system and walking control method |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171215 |
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| WD01 | Invention patent application deemed withdrawn after publication |